Remove Rust MP4 parser

Part 1 for #58

17 files changed, 0 insertions, 4444 deletions

diff --git a/media/libstagefright/binding/DecoderData.cpp b/media/libstagefright/binding/DecoderData.cpp
index aaf2fb32c5..bd51d12aa5 100644
--- a/media/libstagefright/binding/DecoderData.cpp
+++ b/media/libstagefright/binding/DecoderData.cpp
@@ -13,10 +13,6 @@
 #include "mozilla/ArrayUtils.h"
 #include "include/ESDS.h"
 
-#ifdef MOZ_RUST_MP4PARSE
-#include "mp4parse.h"
-#endif
-
 using namespace stagefright;
 
 namespace mp4_demuxer
@@ -187,26 +183,6 @@ MP4VideoInfo::Update(const MetaData* aMetaData, const char* aMimeType)
 
 }
 
-#ifdef MOZ_RUST_MP4PARSE
-void
-MP4VideoInfo::Update(const mp4parse_track_info* track,
-                     const mp4parse_track_video_info* video)
-{
-  if (track->codec == MP4PARSE_CODEC_AVC) {
-    mMimeType = MEDIA_MIMETYPE_VIDEO_AVC;
-  } else if (track->codec == MP4PARSE_CODEC_VP9) {
-    mMimeType = NS_LITERAL_CSTRING("video/vp9");
-  }
-  mTrackId = track->track_id;
-  mDuration = track->duration;
-  mMediaTime = track->media_time;
-  mDisplay.width = video->display_width;
-  mDisplay.height = video->display_height;
-  mImage.width = video->image_width;
-  mImage.height = video->image_height;
-}
-#endif
-
 bool
 MP4VideoInfo::IsValid() const
 {
diff --git a/media/libstagefright/binding/MP4Metadata.cpp b/media/libstagefright/binding/MP4Metadata.cpp
index eb5350704e..686c2b67e3 100644
--- a/media/libstagefright/binding/MP4Metadata.cpp
+++ b/media/libstagefright/binding/MP4Metadata.cpp
@@ -24,14 +24,6 @@
 #include <stdint.h>
 #include <vector>
 
-#ifdef MOZ_RUST_MP4PARSE
-// OpusDecoder header is really needed only by MP4 in rust
-#include "OpusDecoder.h"
-#include "mp4parse.h"
-
-struct FreeMP4Parser { void operator()(mp4parse_parser* aPtr) { mp4parse_free(aPtr); } };
-#endif
-
 using namespace stagefright;
 
 namespace mp4_demuxer
@@ -104,65 +96,8 @@ private:
   bool mCanSeek;
 };
 
-#ifdef MOZ_RUST_MP4PARSE
-
-// Wrap an mp4_demuxer::Stream to remember the read offset.
-
-class RustStreamAdaptor {
-public:
-  explicit RustStreamAdaptor(Stream* aSource)
-    : mSource(aSource)
-    , mOffset(0)
-  {
-  }
-
-  ~RustStreamAdaptor() {}
-
-  bool Read(uint8_t* buffer, uintptr_t size, size_t* bytes_read);
-
-private:
-  Stream* mSource;
-  CheckedInt<size_t> mOffset;
-};
-
-class MP4MetadataRust
-{
-public:
-  explicit MP4MetadataRust(Stream* aSource);
-  ~MP4MetadataRust();
-
-  static bool HasCompleteMetadata(Stream* aSource);
-  static already_AddRefed<mozilla::MediaByteBuffer> Metadata(Stream* aSource);
-  uint32_t GetNumberTracks(mozilla::TrackInfo::TrackType aType) const;
-  mozilla::UniquePtr<mozilla::TrackInfo> GetTrackInfo(mozilla::TrackInfo::TrackType aType,
-                                                      size_t aTrackNumber) const;
-  bool CanSeek() const;
-
-  const CryptoFile& Crypto() const;
-
-  bool ReadTrackIndex(FallibleTArray<Index::Indice>& aDest, mozilla::TrackID aTrackID);
-
-private:
-  Maybe<uint32_t> TrackTypeToGlobalTrackIndex(mozilla::TrackInfo::TrackType aType, size_t aTrackNumber) const;
-
-  CryptoFile mCrypto;
-  RefPtr<Stream> mSource;
-  RustStreamAdaptor mRustSource;
-  mozilla::UniquePtr<mp4parse_parser, FreeMP4Parser> mRustParser;
-};
-#endif
-
 MP4Metadata::MP4Metadata(Stream* aSource)
  : mStagefright(MakeUnique<MP4MetadataStagefright>(aSource))
-#ifdef MOZ_RUST_MP4PARSE
- , mRust(MakeUnique<MP4MetadataRust>(aSource))
- , mPreferRust(false)
- , mReportedAudioTrackTelemetry(false)
- , mReportedVideoTrackTelemetry(false)
-#ifndef RELEASE_OR_BETA
- , mRustTestMode(MediaPrefs::RustTestMode())
-#endif
-#endif
 {
 }
 
@@ -202,70 +137,9 @@ MP4Metadata::GetNumberTracks(mozilla::TrackInfo::TrackType aType) const
 
   uint32_t numTracks = mStagefright->GetNumberTracks(aType);
 
-#ifdef MOZ_RUST_MP4PARSE
-  if (!mRust) {
-    return numTracks;
-  }
-
-  uint32_t numTracksRust = mRust->GetNumberTracks(aType);
-  MOZ_LOG(sLog, LogLevel::Info, ("%s tracks found: stagefright=%u rust=%u",
-                                 TrackTypeToString(aType), numTracks, numTracksRust));
-
-  bool numTracksMatch = numTracks == numTracksRust;
-
-  if (aType == mozilla::TrackInfo::kAudioTrack && !mReportedAudioTrackTelemetry) {
-    Telemetry::Accumulate(Telemetry::MEDIA_RUST_MP4PARSE_TRACK_MATCH_AUDIO,
-                          numTracksMatch);
-    mReportedAudioTrackTelemetry = true;
-  } else if (aType == mozilla::TrackInfo::kVideoTrack && !mReportedVideoTrackTelemetry) {
-    Telemetry::Accumulate(Telemetry::MEDIA_RUST_MP4PARSE_TRACK_MATCH_VIDEO,
-                            numTracksMatch);
-    mReportedVideoTrackTelemetry = true;
-  }
-
-  if (mPreferRust || ShouldPreferRust()) {
-    MOZ_LOG(sLog, LogLevel::Info, ("Preferring rust demuxer"));
-    mPreferRust = true;
-    return numTracksRust;
-  }
-#endif // MOZ_RUST_MP4PARSE
-
   return numTracks;
 }
 
-#ifdef MOZ_RUST_MP4PARSE
-bool MP4Metadata::ShouldPreferRust() const {
-  if (!mRust) {
-    return false;
-  }
-  // See if there's an Opus track.
-  uint32_t numTracks = mRust->GetNumberTracks(TrackInfo::kAudioTrack);
-  for (auto i = 0; i < numTracks; i++) {
-    auto info = mRust->GetTrackInfo(TrackInfo::kAudioTrack, i);
-    if (!info) {
-      return false;
-    }
-    if (info->mMimeType.EqualsASCII("audio/opus") ||
-        info->mMimeType.EqualsASCII("audio/flac")) {
-      return true;
-    }
-  }
-
-  numTracks = mRust->GetNumberTracks(TrackInfo::kVideoTrack);
-  for (auto i = 0; i < numTracks; i++) {
-    auto info = mRust->GetTrackInfo(TrackInfo::kVideoTrack, i);
-    if (!info) {
-      return false;
-    }
-    if (info->mMimeType.EqualsASCII("video/vp9")) {
-      return true;
-    }
-  }
-  // Otherwise, fall back.
-  return false;
-}
-#endif // MOZ_RUST_MP4PARSE
-
 mozilla::UniquePtr<mozilla::TrackInfo>
 MP4Metadata::GetTrackInfo(mozilla::TrackInfo::TrackType aType,
                           size_t aTrackNumber) const
@@ -273,56 +147,6 @@ MP4Metadata::GetTrackInfo(mozilla::TrackInfo::TrackType aType,
   mozilla::UniquePtr<mozilla::TrackInfo> info =
       mStagefright->GetTrackInfo(aType, aTrackNumber);
 
-#ifdef MOZ_RUST_MP4PARSE
-  if (!mRust) {
-    return info;
-  }
-
-  mozilla::UniquePtr<mozilla::TrackInfo> infoRust =
-      mRust->GetTrackInfo(aType, aTrackNumber);
-
-#ifndef RELEASE_OR_BETA
-  if (mRustTestMode && info) {
-    MOZ_DIAGNOSTIC_ASSERT(infoRust);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mId == info->mId);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mKind == info->mKind);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mLabel == info->mLabel);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mLanguage == info->mLanguage);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mEnabled == info->mEnabled);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mTrackId == info->mTrackId);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mMimeType == info->mMimeType);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mDuration == info->mDuration);
-    MOZ_DIAGNOSTIC_ASSERT(infoRust->mMediaTime == info->mMediaTime);
-    switch (aType) {
-    case mozilla::TrackInfo::kAudioTrack: {
-      AudioInfo *audioRust = infoRust->GetAsAudioInfo(), *audio = info->GetAsAudioInfo();
-      MOZ_DIAGNOSTIC_ASSERT(audioRust->mRate == audio->mRate);
-      MOZ_DIAGNOSTIC_ASSERT(audioRust->mChannels == audio->mChannels);
-      MOZ_DIAGNOSTIC_ASSERT(audioRust->mBitDepth == audio->mBitDepth);
-      // TODO: These fields aren't implemented in the Rust demuxer yet.
-      //MOZ_DIAGNOSTIC_ASSERT(audioRust->mProfile != audio->mProfile);
-      //MOZ_DIAGNOSTIC_ASSERT(audioRust->mExtendedProfile != audio->mExtendedProfile);
-      break;
-    }
-    case mozilla::TrackInfo::kVideoTrack: {
-      VideoInfo *videoRust = infoRust->GetAsVideoInfo(), *video = info->GetAsVideoInfo();
-      MOZ_DIAGNOSTIC_ASSERT(videoRust->mDisplay == video->mDisplay);
-      MOZ_DIAGNOSTIC_ASSERT(videoRust->mImage == video->mImage);
-      break;
-    }
-    default:
-      break;
-    }
-  }
-#endif
-
-  if (!mPreferRust) {
-    return info;
-  }
-  MOZ_ASSERT(infoRust);
-  return infoRust;
-#endif
-
   return info;
 }
 
@@ -341,12 +165,6 @@ MP4Metadata::Crypto() const
 bool
 MP4Metadata::ReadTrackIndex(FallibleTArray<Index::Indice>& aDest, mozilla::TrackID aTrackID)
 {
-#ifdef MOZ_RUST_MP4PARSE
-  if (mRust && mPreferRust && mRust->ReadTrackIndex(aDest, aTrackID)) {
-    return true;
-  }
-  aDest.Clear();
-#endif
   return mStagefright->ReadTrackIndex(aDest, aTrackID);
 }
 
@@ -589,292 +407,4 @@ MP4MetadataStagefright::Metadata(Stream* aSource)
   return parser->Metadata();
 }
 
-#ifdef MOZ_RUST_MP4PARSE
-bool
-RustStreamAdaptor::Read(uint8_t* buffer, uintptr_t size, size_t* bytes_read)
-{
-  if (!mOffset.isValid()) {
-    static LazyLogModule sLog("MP4Metadata");
-    MOZ_LOG(sLog, LogLevel::Error, ("Overflow in source stream offset"));
-    return false;
-  }
-  bool rv = mSource->ReadAt(mOffset.value(), buffer, size, bytes_read);
-  if (rv) {
-    mOffset += *bytes_read;
-  }
-  return rv;
-}
-
-// Wrapper to allow rust to call our read adaptor.
-static intptr_t
-read_source(uint8_t* buffer, uintptr_t size, void* userdata)
-{
-  MOZ_ASSERT(buffer);
-  MOZ_ASSERT(userdata);
-
-  auto source = reinterpret_cast<RustStreamAdaptor*>(userdata);
-  size_t bytes_read = 0;
-  bool rv = source->Read(buffer, size, &bytes_read);
-  if (!rv) {
-    static LazyLogModule sLog("MP4Metadata");
-    MOZ_LOG(sLog, LogLevel::Warning, ("Error reading source data"));
-    return -1;
-  }
-  return bytes_read;
-}
-
-MP4MetadataRust::MP4MetadataRust(Stream* aSource)
-  : mSource(aSource)
-  , mRustSource(aSource)
-{
-  mp4parse_io io = { read_source, &mRustSource };
-  mRustParser.reset(mp4parse_new(&io));
-  MOZ_ASSERT(mRustParser);
-
-  static LazyLogModule sLog("MP4Metadata");
-  mp4parse_error rv = mp4parse_read(mRustParser.get());
-  MOZ_LOG(sLog, LogLevel::Debug, ("rust parser returned %d\n", rv));
-  Telemetry::Accumulate(Telemetry::MEDIA_RUST_MP4PARSE_SUCCESS,
-                        rv == MP4PARSE_OK);
-  if (rv != MP4PARSE_OK) {
-    MOZ_ASSERT(rv > 0);
-    Telemetry::Accumulate(Telemetry::MEDIA_RUST_MP4PARSE_ERROR_CODE, rv);
-  }
-}
-
-MP4MetadataRust::~MP4MetadataRust()
-{
-}
-
-bool
-TrackTypeEqual(TrackInfo::TrackType aLHS, mp4parse_track_type aRHS)
-{
-  switch (aLHS) {
-  case TrackInfo::kAudioTrack:
-    return aRHS == MP4PARSE_TRACK_TYPE_AUDIO;
-  case TrackInfo::kVideoTrack:
-    return aRHS == MP4PARSE_TRACK_TYPE_VIDEO;
-  default:
-    return false;
-  }
-}
-
-uint32_t
-MP4MetadataRust::GetNumberTracks(mozilla::TrackInfo::TrackType aType) const
-{
-  static LazyLogModule sLog("MP4Metadata");
-
-  uint32_t tracks;
-  auto rv = mp4parse_get_track_count(mRustParser.get(), &tracks);
-  if (rv != MP4PARSE_OK) {
-    MOZ_LOG(sLog, LogLevel::Warning,
-        ("rust parser error %d counting tracks", rv));
-    return 0;
-  }
-  MOZ_LOG(sLog, LogLevel::Info, ("rust parser found %u tracks", tracks));
-
-  uint32_t total = 0;
-  for (uint32_t i = 0; i < tracks; ++i) {
-    mp4parse_track_info track_info;
-    rv = mp4parse_get_track_info(mRustParser.get(), i, &track_info);
-    if (rv != MP4PARSE_OK) {
-      continue;
-    }
-    if (TrackTypeEqual(aType, track_info.track_type)) {
-        total += 1;
-    }
-  }
-
-  return total;
-}
-
-Maybe<uint32_t>
-MP4MetadataRust::TrackTypeToGlobalTrackIndex(mozilla::TrackInfo::TrackType aType, size_t aTrackNumber) const
-{
-  uint32_t tracks;
-  auto rv = mp4parse_get_track_count(mRustParser.get(), &tracks);
-  if (rv != MP4PARSE_OK) {
-    return Nothing();
-  }
-
-  /* The MP4Metadata API uses a per-TrackType index of tracks, but mp4parse
-     (and libstagefright) use a global track index.  Convert the index by
-     counting the tracks of the requested type and returning the global
-     track index when a match is found. */
-  uint32_t perType = 0;
-  for (uint32_t i = 0; i < tracks; ++i) {
-    mp4parse_track_info track_info;
-    rv = mp4parse_get_track_info(mRustParser.get(), i, &track_info);
-    if (rv != MP4PARSE_OK) {
-      continue;
-    }
-    if (TrackTypeEqual(aType, track_info.track_type)) {
-      if (perType == aTrackNumber) {
-        return Some(i);
-      }
-      perType += 1;
-    }
-  }
-
-  return Nothing();
-}
-
-mozilla::UniquePtr<mozilla::TrackInfo>
-MP4MetadataRust::GetTrackInfo(mozilla::TrackInfo::TrackType aType,
-                              size_t aTrackNumber) const
-{
-  static LazyLogModule sLog("MP4Metadata");
-
-  Maybe<uint32_t> trackIndex = TrackTypeToGlobalTrackIndex(aType, aTrackNumber);
-  if (trackIndex.isNothing()) {
-    return nullptr;
-  }
-
-  mp4parse_track_info info;
-  auto rv = mp4parse_get_track_info(mRustParser.get(), trackIndex.value(), &info);
-  if (rv != MP4PARSE_OK) {
-    MOZ_LOG(sLog, LogLevel::Warning, ("mp4parse_get_track_info returned %d", rv));
-    return nullptr;
-  }
-#ifdef DEBUG
-  const char* codec_string = "unrecognized";
-  switch (info.codec) {
-    case MP4PARSE_CODEC_UNKNOWN: codec_string = "unknown"; break;
-    case MP4PARSE_CODEC_AAC: codec_string = "aac"; break;
-    case MP4PARSE_CODEC_OPUS: codec_string = "opus"; break;
-    case MP4PARSE_CODEC_FLAC: codec_string = "flac"; break;
-    case MP4PARSE_CODEC_AVC: codec_string = "h.264"; break;
-    case MP4PARSE_CODEC_VP9: codec_string = "vp9"; break;
-    case MP4PARSE_CODEC_MP3: codec_string = "mp3"; break;
-  }
-  MOZ_LOG(sLog, LogLevel::Debug, ("track codec %s (%u)\n",
-        codec_string, info.codec));
-#endif
-
-  // This specialization interface is crazy.
-  UniquePtr<mozilla::TrackInfo> e;
-  switch (aType) {
-    case TrackInfo::TrackType::kAudioTrack: {
-      mp4parse_track_audio_info audio;
-      auto rv = mp4parse_get_track_audio_info(mRustParser.get(), trackIndex.value(), &audio);
-      if (rv != MP4PARSE_OK) {
-        MOZ_LOG(sLog, LogLevel::Warning, ("mp4parse_get_track_audio_info returned error %d", rv));
-        return nullptr;
-      }
-      auto track = mozilla::MakeUnique<mozilla::AudioInfo>();
-      if (info.codec == MP4PARSE_CODEC_OPUS) {
-        track->mMimeType = NS_LITERAL_CSTRING("audio/opus");
-        // The Opus decoder expects the container's codec delay or
-        // pre-skip value, in microseconds, as a 64-bit int at the
-        // start of the codec-specific config blob.
-        MOZ_ASSERT(audio.codec_specific_config.data);
-        MOZ_ASSERT(audio.codec_specific_config.length >= 12);
-        uint16_t preskip =
-          LittleEndian::readUint16(audio.codec_specific_config.data + 10);
-        MOZ_LOG(sLog, LogLevel::Debug,
-            ("Copying opus pre-skip value of %d as CodecDelay.",(int)preskip));
-        OpusDataDecoder::AppendCodecDelay(track->mCodecSpecificConfig,
-            mozilla::FramesToUsecs(preskip, 48000).value());
-      } else if (info.codec == MP4PARSE_CODEC_AAC) {
-        track->mMimeType = MEDIA_MIMETYPE_AUDIO_AAC;
-      } else if (info.codec == MP4PARSE_CODEC_FLAC) {
-        track->mMimeType = MEDIA_MIMETYPE_AUDIO_FLAC;
-      } else if (info.codec == MP4PARSE_CODEC_MP3) {
-        track->mMimeType = MEDIA_MIMETYPE_AUDIO_MPEG;
-      }
-      track->mCodecSpecificConfig->AppendElements(
-          audio.codec_specific_config.data,
-          audio.codec_specific_config.length);
-      track->mRate = audio.sample_rate;
-      track->mChannels = audio.channels;
-      track->mBitDepth = audio.bit_depth;
-      track->mDuration = info.duration;
-      track->mMediaTime = info.media_time;
-      track->mTrackId = info.track_id;
-      e = Move(track);
-    }
-    break;
-    case TrackInfo::TrackType::kVideoTrack: {
-      mp4parse_track_video_info video;
-      auto rv = mp4parse_get_track_video_info(mRustParser.get(), trackIndex.value(), &video);
-      if (rv != MP4PARSE_OK) {
-        MOZ_LOG(sLog, LogLevel::Warning, ("mp4parse_get_track_video_info returned error %d", rv));
-        return nullptr;
-      }
-      auto track = mozilla::MakeUnique<MP4VideoInfo>();
-      track->Update(&info, &video);
-      e = Move(track);
-    }
-    break;
-    default:
-      MOZ_LOG(sLog, LogLevel::Warning, ("unhandled track type %d", aType));
-      return nullptr;
-      break;
-  }
-
-  // No duration in track, use fragment_duration.
-  if (e && !e->mDuration) {
-    mp4parse_fragment_info info;
-    auto rv = mp4parse_get_fragment_info(mRustParser.get(), &info);
-    if (rv == MP4PARSE_OK) {
-      e->mDuration = info.fragment_duration;
-    }
-  }
-
-  if (e && e->IsValid()) {
-    return e;
-  }
-  MOZ_LOG(sLog, LogLevel::Debug, ("TrackInfo didn't validate"));
-
-  return nullptr;
-}
-
-bool
-MP4MetadataRust::CanSeek() const
-{
-  MOZ_ASSERT(false, "Not yet implemented");
-  return false;
-}
-
-const CryptoFile&
-MP4MetadataRust::Crypto() const
-{
-  MOZ_ASSERT(false, "Not yet implemented");
-  return mCrypto;
-}
-
-bool
-MP4MetadataRust::ReadTrackIndex(FallibleTArray<Index::Indice>& aDest, mozilla::TrackID aTrackID)
-{
-  uint8_t fragmented = false;
-  auto rv = mp4parse_is_fragmented(mRustParser.get(), aTrackID, &fragmented);
-  if (rv != MP4PARSE_OK) {
-    return false;
-  }
-
-  if (fragmented) {
-    return true;
-  }
-
-  // For non-fragmented mp4.
-  NS_WARNING("Not yet implemented");
-
-  return false;
-}
-
-/*static*/ bool
-MP4MetadataRust::HasCompleteMetadata(Stream* aSource)
-{
-  MOZ_ASSERT(false, "Not yet implemented");
-  return false;
-}
-
-/*static*/ already_AddRefed<mozilla::MediaByteBuffer>
-MP4MetadataRust::Metadata(Stream* aSource)
-{
-  MOZ_ASSERT(false, "Not yet implemented");
-  return nullptr;
-}
-#endif
-
 } // namespace mp4_demuxer
diff --git a/media/libstagefright/binding/include/mp4_demuxer/DecoderData.h b/media/libstagefright/binding/include/mp4_demuxer/DecoderData.h
index 87262c26ac..383c4a13cd 100644
--- a/media/libstagefright/binding/include/mp4_demuxer/DecoderData.h
+++ b/media/libstagefright/binding/include/mp4_demuxer/DecoderData.h
@@ -19,14 +19,6 @@ namespace stagefright
 class MetaData;
 }
 
-#ifdef MOZ_RUST_MP4PARSE
-extern "C" {
-typedef struct mp4parse_track_info mp4parse_track_info;
-typedef struct mp4parse_track_audio_info mp4parse_track_audio_info;
-typedef struct mp4parse_track_video_info mp4parse_track_video_info;
-}
-#endif
-
 namespace mp4_demuxer
 {
 
@@ -80,11 +72,6 @@ public:
   void Update(const stagefright::MetaData* aMetaData,
               const char* aMimeType);
 
-#ifdef MOZ_RUST_MP4PARSE
-  void Update(const mp4parse_track_info* track,
-              const mp4parse_track_video_info* video);
-#endif
-
   virtual bool IsValid() const override;
 };
 
diff --git a/media/libstagefright/binding/include/mp4_demuxer/MP4Metadata.h b/media/libstagefright/binding/include/mp4_demuxer/MP4Metadata.h
index 83eca69d33..2907f4c454 100644
--- a/media/libstagefright/binding/include/mp4_demuxer/MP4Metadata.h
+++ b/media/libstagefright/binding/include/mp4_demuxer/MP4Metadata.h
@@ -37,16 +37,6 @@ public:
 
 private:
   UniquePtr<MP4MetadataStagefright> mStagefright;
-#ifdef MOZ_RUST_MP4PARSE
-  UniquePtr<MP4MetadataRust> mRust;
-  mutable bool mPreferRust;
-  mutable bool mReportedAudioTrackTelemetry;
-  mutable bool mReportedVideoTrackTelemetry;
-#ifndef RELEASE_OR_BETA
-  mutable bool mRustTestMode;
-#endif
-  bool ShouldPreferRust() const;
-#endif
 };
 
 } // namespace mp4_demuxer
diff --git a/media/libstagefright/binding/include/mp4parse.h b/media/libstagefright/binding/include/mp4parse.h
deleted file mode 100644
index 6650661cb1..0000000000
--- a/media/libstagefright/binding/include/mp4parse.h
+++ /dev/null
@@ -1,113 +0,0 @@
-
-#ifndef cheddar_generated_mp4parse_h
-#define cheddar_generated_mp4parse_h
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdint.h>
-#include <stdbool.h>
-
-// THIS FILE IS AUTOGENERATED BY mp4parse-rust/build.rs - DO NOT EDIT
-
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-typedef enum mp4parse_error {
-	MP4PARSE_OK = 0,
-	MP4PARSE_ERROR_BADARG = 1,
-	MP4PARSE_ERROR_INVALID = 2,
-	MP4PARSE_ERROR_UNSUPPORTED = 3,
-	MP4PARSE_ERROR_EOF = 4,
-	MP4PARSE_ERROR_IO = 5,
-} mp4parse_error;
-
-typedef enum mp4parse_track_type {
-	MP4PARSE_TRACK_TYPE_VIDEO = 0,
-	MP4PARSE_TRACK_TYPE_AUDIO = 1,
-} mp4parse_track_type;
-
-typedef enum mp4parse_codec {
-	MP4PARSE_CODEC_UNKNOWN,
-	MP4PARSE_CODEC_AAC,
-	MP4PARSE_CODEC_FLAC,
-	MP4PARSE_CODEC_OPUS,
-	MP4PARSE_CODEC_AVC,
-	MP4PARSE_CODEC_VP9,
-	MP4PARSE_CODEC_MP3,
-} mp4parse_codec;
-
-typedef struct mp4parse_track_info {
-	mp4parse_track_type track_type;
-	mp4parse_codec codec;
-	uint32_t track_id;
-	uint64_t duration;
-	int64_t media_time;
-} mp4parse_track_info;
-
-typedef struct mp4parse_codec_specific_config {
-	uint32_t length;
-	uint8_t const* data;
-} mp4parse_codec_specific_config;
-
-typedef struct mp4parse_track_audio_info {
-	uint16_t channels;
-	uint16_t bit_depth;
-	uint32_t sample_rate;
-	mp4parse_codec_specific_config codec_specific_config;
-} mp4parse_track_audio_info;
-
-typedef struct mp4parse_track_video_info {
-	uint32_t display_width;
-	uint32_t display_height;
-	uint16_t image_width;
-	uint16_t image_height;
-} mp4parse_track_video_info;
-
-typedef struct mp4parse_fragment_info {
-	uint64_t fragment_duration;
-} mp4parse_fragment_info;
-
-typedef struct mp4parse_parser mp4parse_parser;
-
-typedef struct mp4parse_io {
-	intptr_t (*read)(uint8_t* buffer, uintptr_t size, void* userdata);
-	void* userdata;
-} mp4parse_io;
-
-/// Allocate an `mp4parse_parser*` to read from the supplied `mp4parse_io`.
-mp4parse_parser* mp4parse_new(mp4parse_io const* io);
-
-/// Free an `mp4parse_parser*` allocated by `mp4parse_new()`.
-void mp4parse_free(mp4parse_parser* parser);
-
-/// Run the `mp4parse_parser*` allocated by `mp4parse_new()` until EOF or error.
-mp4parse_error mp4parse_read(mp4parse_parser* parser);
-
-/// Return the number of tracks parsed by previous `mp4parse_read()` call.
-mp4parse_error mp4parse_get_track_count(mp4parse_parser const* parser, uint32_t* count);
-
-/// Fill the supplied `mp4parse_track_info` with metadata for `track`.
-mp4parse_error mp4parse_get_track_info(mp4parse_parser* parser, uint32_t track_index, mp4parse_track_info* info);
-
-/// Fill the supplied `mp4parse_track_audio_info` with metadata for `track`.
-mp4parse_error mp4parse_get_track_audio_info(mp4parse_parser* parser, uint32_t track_index, mp4parse_track_audio_info* info);
-
-/// Fill the supplied `mp4parse_track_video_info` with metadata for `track`.
-mp4parse_error mp4parse_get_track_video_info(mp4parse_parser* parser, uint32_t track_index, mp4parse_track_video_info* info);
-
-mp4parse_error mp4parse_get_fragment_info(mp4parse_parser* parser, mp4parse_fragment_info* info);
-
-mp4parse_error mp4parse_is_fragmented(mp4parse_parser* parser, uint32_t track_id, uint8_t* fragmented);
-
-
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif
diff --git a/media/libstagefright/binding/mp4parse-cargo.patch b/media/libstagefright/binding/mp4parse-cargo.patch
deleted file mode 100644
index 9b0ca7134c..0000000000
--- a/media/libstagefright/binding/mp4parse-cargo.patch
+++ /dev/null
@@ -1,45 +0,0 @@
-diff --git a/media/libstagefright/binding/mp4parse/Cargo.toml b/media/libstagefright/binding/mp4parse/Cargo.toml
-index ff9422c..814c4c6 100644
---- a/media/libstagefright/binding/mp4parse/Cargo.toml
-+++ b/media/libstagefright/binding/mp4parse/Cargo.toml
-@@ -18,17 +18,11 @@ exclude = [
- ]
- 
- [dependencies]
--byteorder = "0.5.0"
--afl = { version = "0.1.1", optional = true }
--afl-plugin = { version = "0.1.1", optional = true }
--abort_on_panic = { version = "1.0.0", optional = true }
-+byteorder = "0.5.0"
- 
- [dev-dependencies]
- test-assembler = "0.1.2"
- 
--[features]
--fuzz = ["afl", "afl-plugin", "abort_on_panic"]
--
- # Somewhat heavy-handed, but we want at least -Z force-overflow-checks=on.
- [profile.release]
- debug-assertions = true
-diff --git a/media/libstagefright/binding/mp4parse_capi/Cargo.toml b/media/libstagefright/binding/mp4parse_capi/Cargo.toml
-index aeeebc65..5c0836a 100644
---- a/media/libstagefright/binding/mp4parse_capi/Cargo.toml
-+++ b/media/libstagefright/binding/mp4parse_capi/Cargo.toml
-@@ -18,17 +18,9 @@ exclude = [
-   "*.mp4",
- ]
- 
--build = "build.rs"
--
- [dependencies]
- "mp4parse" = {version = "0.6.0", path = "../mp4parse"}
- 
--[build-dependencies]
--rusty-cheddar = "0.3.2"
--
--[features]
--fuzz = ["mp4parse/fuzz"]
--
- # Somewhat heavy-handed, but we want at least -Z force-overflow-checks=on.
- [profile.release]
- debug-assertions = true
diff --git a/media/libstagefright/binding/mp4parse/Cargo.toml b/media/libstagefright/binding/mp4parse/Cargo.toml
deleted file mode 100644
index affcef72b0..0000000000
--- a/media/libstagefright/binding/mp4parse/Cargo.toml
+++ /dev/null
@@ -1,29 +0,0 @@
-[package]
-name = "mp4parse"
-version = "0.6.0"
-authors = [
-  "Ralph Giles <giles@mozilla.com>",
-  "Matthew Gregan <kinetik@flim.org>",
-  "Alfredo Yang <ayang@mozilla.com>",
-]
-
-description = "Parser for ISO base media file format (mp4)"
-documentation = "https://mp4parse-docs.surge.sh/mp4parse/"
-license = "MPL-2.0"
-
-repository = "https://github.com/mozilla/mp4parse-rust"
-
-# Avoid complaints about trying to package test files.
-exclude = [
-  "*.mp4",
-]
-
-[dependencies]
-byteorder = "0.5.0"
-
-[dev-dependencies]
-test-assembler = "0.1.2"
-
-# Somewhat heavy-handed, but we want at least -Z force-overflow-checks=on.
-[profile.release]
-debug-assertions = true
diff --git a/media/libstagefright/binding/mp4parse/src/boxes.rs b/media/libstagefright/binding/mp4parse/src/boxes.rs
deleted file mode 100644
index 689439ade2..0000000000
--- a/media/libstagefright/binding/mp4parse/src/boxes.rs
+++ /dev/null
@@ -1,62 +0,0 @@
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-macro_rules! box_database {
-    ($($boxenum:ident $boxtype:expr),*,) => {
-        #[derive(Debug, Clone, Copy, PartialEq)]
-        pub enum BoxType {
-            $($boxenum),*,
-            UnknownBox(u32),
-        }
-
-        impl From<u32> for BoxType {
-            fn from(t: u32) -> BoxType {
-                use self::BoxType::*;
-                match t {
-                    $($boxtype => $boxenum),*,
-                    _ => UnknownBox(t),
-                }
-            }
-        }
-    }
-}
-
-box_database!(
-    FileTypeBox                0x66747970, // "ftyp"
-    MovieBox                   0x6d6f6f76, // "moov"
-    MovieHeaderBox             0x6d766864, // "mvhd"
-    TrackBox                   0x7472616b, // "trak"
-    TrackHeaderBox             0x746b6864, // "tkhd"
-    EditBox                    0x65647473, // "edts"
-    MediaBox                   0x6d646961, // "mdia"
-    EditListBox                0x656c7374, // "elst"
-    MediaHeaderBox             0x6d646864, // "mdhd"
-    HandlerBox                 0x68646c72, // "hdlr"
-    MediaInformationBox        0x6d696e66, // "minf"
-    SampleTableBox             0x7374626c, // "stbl"
-    SampleDescriptionBox       0x73747364, // "stsd"
-    TimeToSampleBox            0x73747473, // "stts"
-    SampleToChunkBox           0x73747363, // "stsc"
-    SampleSizeBox              0x7374737a, // "stsz"
-    ChunkOffsetBox             0x7374636f, // "stco"
-    ChunkLargeOffsetBox        0x636f3634, // "co64"
-    SyncSampleBox              0x73747373, // "stss"
-    AVCSampleEntry             0x61766331, // "avc1"
-    AVC3SampleEntry            0x61766333, // "avc3" - Need to check official name in spec.
-    AVCConfigurationBox        0x61766343, // "avcC"
-    MP4AudioSampleEntry        0x6d703461, // "mp4a"
-    ESDBox                     0x65736473, // "esds"
-    VP8SampleEntry             0x76703038, // "vp08"
-    VP9SampleEntry             0x76703039, // "vp09"
-    VPCodecConfigurationBox    0x76706343, // "vpcC"
-    FLACSampleEntry            0x664c6143, // "fLaC"
-    FLACSpecificBox            0x64664c61, // "dfLa"
-    OpusSampleEntry            0x4f707573, // "Opus"
-    OpusSpecificBox            0x644f7073, // "dOps"
-    ProtectedVisualSampleEntry 0x656e6376, // "encv" - Need to check official name in spec.
-    ProtectedAudioSampleEntry  0x656e6361, // "enca" - Need to check official name in spec.
-    MovieExtendsBox            0x6d766578, // "mvex"
-    MovieExtendsHeaderBox      0x6d656864, // "mehd"
-    QTWaveAtom                 0x77617665, // "wave" - quicktime atom
-);
diff --git a/media/libstagefright/binding/mp4parse/src/lib.rs b/media/libstagefright/binding/mp4parse/src/lib.rs
deleted file mode 100644
index 37606a5e27..0000000000
--- a/media/libstagefright/binding/mp4parse/src/lib.rs
+++ /dev/null
@@ -1,1704 +0,0 @@
-//! Module for parsing ISO Base Media Format aka video/mp4 streams.
-
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at https://mozilla.org/MPL/2.0/.
-#![cfg_attr(feature = "fuzz", feature(plugin))]
-#![cfg_attr(feature = "fuzz", plugin(afl_plugin))]
-#[cfg(feature = "fuzz")]
-extern crate afl;
-
-extern crate byteorder;
-use byteorder::ReadBytesExt;
-use std::io::{Read, Take};
-use std::io::Cursor;
-use std::cmp;
-
-mod boxes;
-use boxes::BoxType;
-
-// Unit tests.
-#[cfg(test)]
-mod tests;
-
-// Arbitrary buffer size limit used for raw read_bufs on a box.
-const BUF_SIZE_LIMIT: u64 = 1024 * 1024;
-
-static DEBUG_MODE: std::sync::atomic::AtomicBool = std::sync::atomic::ATOMIC_BOOL_INIT;
-
-pub fn set_debug_mode(mode: bool) {
-    DEBUG_MODE.store(mode, std::sync::atomic::Ordering::SeqCst);
-}
-
-#[inline(always)]
-fn get_debug_mode() -> bool {
-    DEBUG_MODE.load(std::sync::atomic::Ordering::Relaxed)
-}
-
-macro_rules! log {
-    ($($args:tt)*) => (
-        if get_debug_mode() {
-            println!( $( $args )* );
-        }
-    )
-}
-
-/// Describes parser failures.
-///
-/// This enum wraps the standard `io::Error` type, unified with
-/// our own parser error states and those of crates we use.
-#[derive(Debug)]
-pub enum Error {
-    /// Parse error caused by corrupt or malformed data.
-    InvalidData(&'static str),
-    /// Parse error caused by limited parser support rather than invalid data.
-    Unsupported(&'static str),
-    /// Reflect `std::io::ErrorKind::UnexpectedEof` for short data.
-    UnexpectedEOF,
-    /// Propagate underlying errors from `std::io`.
-    Io(std::io::Error),
-    /// read_mp4 terminated without detecting a moov box.
-    NoMoov,
-}
-
-impl From<std::io::Error> for Error {
-    fn from(err: std::io::Error) -> Error {
-        match err.kind() {
-            std::io::ErrorKind::UnexpectedEof => Error::UnexpectedEOF,
-            _ => Error::Io(err),
-        }
-    }
-}
-
-impl From<std::string::FromUtf8Error> for Error {
-    fn from(_: std::string::FromUtf8Error) -> Error {
-        Error::InvalidData("invalid utf8")
-    }
-}
-
-/// Result shorthand using our Error enum.
-pub type Result<T> = std::result::Result<T, Error>;
-
-/// Basic ISO box structure.
-///
-/// mp4 files are a sequence of possibly-nested 'box' structures.  Each box
-/// begins with a header describing the length of the box's data and a
-/// four-byte box type which identifies the type of the box. Together these
-/// are enough to interpret the contents of that section of the file.
-#[derive(Debug, Clone, Copy)]
-struct BoxHeader {
-    /// Box type.
-    name: BoxType,
-    /// Size of the box in bytes.
-    size: u64,
-    /// Offset to the start of the contained data (or header size).
-    offset: u64,
-}
-
-/// File type box 'ftyp'.
-#[derive(Debug)]
-struct FileTypeBox {
-    major_brand: u32,
-    minor_version: u32,
-    compatible_brands: Vec<u32>,
-}
-
-/// Movie header box 'mvhd'.
-#[derive(Debug)]
-struct MovieHeaderBox {
-    pub timescale: u32,
-    duration: u64,
-}
-
-/// Track header box 'tkhd'
-#[derive(Debug, Clone)]
-pub struct TrackHeaderBox {
-    track_id: u32,
-    pub disabled: bool,
-    pub duration: u64,
-    pub width: u32,
-    pub height: u32,
-}
-
-/// Edit list box 'elst'
-#[derive(Debug)]
-struct EditListBox {
-    edits: Vec<Edit>,
-}
-
-#[derive(Debug)]
-struct Edit {
-    segment_duration: u64,
-    media_time: i64,
-    media_rate_integer: i16,
-    media_rate_fraction: i16,
-}
-
-/// Media header box 'mdhd'
-#[derive(Debug)]
-struct MediaHeaderBox {
-    timescale: u32,
-    duration: u64,
-}
-
-// Chunk offset box 'stco' or 'co64'
-#[derive(Debug)]
-struct ChunkOffsetBox {
-    offsets: Vec<u64>,
-}
-
-// Sync sample box 'stss'
-#[derive(Debug)]
-struct SyncSampleBox {
-    samples: Vec<u32>,
-}
-
-// Sample to chunk box 'stsc'
-#[derive(Debug)]
-struct SampleToChunkBox {
-    samples: Vec<SampleToChunk>,
-}
-
-#[derive(Debug)]
-struct SampleToChunk {
-    first_chunk: u32,
-    samples_per_chunk: u32,
-    sample_description_index: u32,
-}
-
-// Sample size box 'stsz'
-#[derive(Debug)]
-struct SampleSizeBox {
-    sample_size: u32,
-    sample_sizes: Vec<u32>,
-}
-
-// Time to sample box 'stts'
-#[derive(Debug)]
-struct TimeToSampleBox {
-    samples: Vec<Sample>,
-}
-
-#[derive(Debug)]
-struct Sample {
-    sample_count: u32,
-    sample_delta: u32,
-}
-
-// Handler reference box 'hdlr'
-#[derive(Debug)]
-struct HandlerBox {
-    handler_type: u32,
-}
-
-// Sample description box 'stsd'
-#[derive(Debug)]
-struct SampleDescriptionBox {
-    descriptions: Vec<SampleEntry>,
-}
-
-#[derive(Debug, Clone)]
-pub enum SampleEntry {
-    Audio(AudioSampleEntry),
-    Video(VideoSampleEntry),
-    Unknown,
-}
-
-#[allow(non_camel_case_types)]
-#[derive(Debug, Clone)]
-pub struct ES_Descriptor {
-    pub audio_codec: CodecType,
-    pub audio_sample_rate: Option<u32>,
-    pub audio_channel_count: Option<u16>,
-    pub codec_specific_config: Vec<u8>,
-}
-
-#[allow(non_camel_case_types)]
-#[derive(Debug, Clone)]
-pub enum AudioCodecSpecific {
-    ES_Descriptor(ES_Descriptor),
-    FLACSpecificBox(FLACSpecificBox),
-    OpusSpecificBox(OpusSpecificBox),
-}
-
-#[derive(Debug, Clone)]
-pub struct AudioSampleEntry {
-    data_reference_index: u16,
-    pub channelcount: u16,
-    pub samplesize: u16,
-    pub samplerate: u32,
-    pub codec_specific: AudioCodecSpecific,
-}
-
-#[derive(Debug, Clone)]
-pub enum VideoCodecSpecific {
-    AVCConfig(Vec<u8>),
-    VPxConfig(VPxConfigBox),
-}
-
-#[derive(Debug, Clone)]
-pub struct VideoSampleEntry {
-    data_reference_index: u16,
-    pub width: u16,
-    pub height: u16,
-    pub codec_specific: VideoCodecSpecific,
-}
-
-/// Represent a Video Partition Codec Configuration 'vpcC' box (aka vp9).
-#[derive(Debug, Clone)]
-pub struct VPxConfigBox {
-    profile: u8,
-    level: u8,
-    pub bit_depth: u8,
-    pub color_space: u8, // Really an enum
-    pub chroma_subsampling: u8,
-    transfer_function: u8,
-    video_full_range: bool,
-    pub codec_init: Vec<u8>, // Empty for vp8/vp9.
-}
-
-#[derive(Debug, Clone)]
-pub struct FLACMetadataBlock {
-    pub block_type: u8,
-    pub data: Vec<u8>,
-}
-
-/// Represet a FLACSpecificBox 'dfLa'
-#[derive(Debug, Clone)]
-pub struct FLACSpecificBox {
-    version: u8,
-    pub blocks: Vec<FLACMetadataBlock>,
-}
-
-#[derive(Debug, Clone)]
-struct ChannelMappingTable {
-    stream_count: u8,
-    coupled_count: u8,
-    channel_mapping: Vec<u8>,
-}
-
-/// Represent an OpusSpecificBox 'dOps'
-#[derive(Debug, Clone)]
-pub struct OpusSpecificBox {
-    pub version: u8,
-    output_channel_count: u8,
-    pre_skip: u16,
-    input_sample_rate: u32,
-    output_gain: i16,
-    channel_mapping_family: u8,
-    channel_mapping_table: Option<ChannelMappingTable>,
-}
-
-#[derive(Debug)]
-pub struct MovieExtendsBox {
-    pub fragment_duration: Option<MediaScaledTime>,
-}
-
-/// Internal data structures.
-#[derive(Debug, Default)]
-pub struct MediaContext {
-    pub timescale: Option<MediaTimeScale>,
-    /// Tracks found in the file.
-    pub tracks: Vec<Track>,
-    pub mvex: Option<MovieExtendsBox>,
-}
-
-impl MediaContext {
-    pub fn new() -> MediaContext {
-        Default::default()
-    }
-}
-
-#[derive(Debug, PartialEq)]
-pub enum TrackType {
-    Audio,
-    Video,
-    Unknown,
-}
-
-impl Default for TrackType {
-    fn default() -> Self { TrackType::Unknown }
-}
-
-#[derive(Debug, Clone, Copy, PartialEq)]
-pub enum CodecType {
-    Unknown,
-    MP3,
-    AAC,
-    FLAC,
-    Opus,
-    H264,
-    VP9,
-    VP8,
-    EncryptedVideo,
-    EncryptedAudio,
-}
-
-impl Default for CodecType {
-    fn default() -> Self { CodecType::Unknown }
-}
-
-/// The media's global (mvhd) timescale in units per second.
-#[derive(Debug, Copy, Clone, PartialEq)]
-pub struct MediaTimeScale(pub u64);
-
-/// A time to be scaled by the media's global (mvhd) timescale.
-#[derive(Debug, Copy, Clone, PartialEq)]
-pub struct MediaScaledTime(pub u64);
-
-/// The track's local (mdhd) timescale.
-/// Members are timescale units per second and the track id.
-#[derive(Debug, Copy, Clone, PartialEq)]
-pub struct TrackTimeScale(pub u64, pub usize);
-
-/// A time to be scaled by the track's local (mdhd) timescale.
-/// Members are time in scale units and the track id.
-#[derive(Debug, Copy, Clone, PartialEq)]
-pub struct TrackScaledTime(pub u64, pub usize);
-
-/// A fragmented file contains no sample data in stts, stsc, and stco.
-#[derive(Debug, Default)]
-pub struct EmptySampleTableBoxes {
-    pub empty_stts : bool,
-    pub empty_stsc : bool,
-    pub empty_stco : bool,
-}
-
-/// Check boxes contain data.
-impl EmptySampleTableBoxes {
-    pub fn all_empty(&self) -> bool {
-        self.empty_stts & self.empty_stsc & self.empty_stco
-    }
-}
-
-#[derive(Debug, Default)]
-pub struct Track {
-    id: usize,
-    pub track_type: TrackType,
-    pub empty_duration: Option<MediaScaledTime>,
-    pub media_time: Option<TrackScaledTime>,
-    pub timescale: Option<TrackTimeScale>,
-    pub duration: Option<TrackScaledTime>,
-    pub track_id: Option<u32>,
-    pub codec_type: CodecType,
-    pub empty_sample_boxes: EmptySampleTableBoxes,
-    pub data: Option<SampleEntry>,
-    pub tkhd: Option<TrackHeaderBox>, // TODO(kinetik): find a nicer way to export this.
-}
-
-impl Track {
-    fn new(id: usize) -> Track {
-        Track { id: id, ..Default::default() }
-    }
-}
-
-struct BMFFBox<'a, T: 'a + Read> {
-    head: BoxHeader,
-    content: Take<&'a mut T>,
-}
-
-struct BoxIter<'a, T: 'a + Read> {
-    src: &'a mut T,
-}
-
-impl<'a, T: Read> BoxIter<'a, T> {
-    fn new(src: &mut T) -> BoxIter<T> {
-        BoxIter { src: src }
-    }
-
-    fn next_box(&mut self) -> Result<Option<BMFFBox<T>>> {
-        let r = read_box_header(self.src);
-        match r {
-            Ok(h) => Ok(Some(BMFFBox {
-                head: h,
-                content: self.src.take(h.size - h.offset),
-            })),
-            Err(Error::UnexpectedEOF) => Ok(None),
-            Err(e) => Err(e),
-        }
-    }
-}
-
-impl<'a, T: Read> Read for BMFFBox<'a, T> {
-    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
-        self.content.read(buf)
-    }
-}
-
-impl<'a, T: Read> BMFFBox<'a, T> {
-    fn bytes_left(&self) -> usize {
-        self.content.limit() as usize
-    }
-
-    fn get_header(&self) -> &BoxHeader {
-        &self.head
-    }
-
-    fn box_iter<'b>(&'b mut self) -> BoxIter<BMFFBox<'a, T>> {
-        BoxIter::new(self)
-    }
-}
-
-/// Read and parse a box header.
-///
-/// Call this first to determine the type of a particular mp4 box
-/// and its length. Used internally for dispatching to specific
-/// parsers for the internal content, or to get the length to
-/// skip unknown or uninteresting boxes.
-fn read_box_header<T: ReadBytesExt>(src: &mut T) -> Result<BoxHeader> {
-    let size32 = try!(be_u32(src));
-    let name = BoxType::from(try!(be_u32(src)));
-    let size = match size32 {
-        // valid only for top-level box and indicates it's the last box in the file.  usually mdat.
-        0 => return Err(Error::Unsupported("unknown sized box")),
-        1 => {
-            let size64 = try!(be_u64(src));
-            if size64 < 16 {
-                return Err(Error::InvalidData("malformed wide size"));
-            }
-            size64
-        }
-        2...7 => return Err(Error::InvalidData("malformed size")),
-        _ => size32 as u64,
-    };
-    let offset = match size32 {
-        1 => 4 + 4 + 8,
-        _ => 4 + 4,
-    };
-    assert!(offset <= size);
-    Ok(BoxHeader {
-        name: name,
-        size: size,
-        offset: offset,
-    })
-}
-
-/// Parse the extra header fields for a full box.
-fn read_fullbox_extra<T: ReadBytesExt>(src: &mut T) -> Result<(u8, u32)> {
-    let version = try!(src.read_u8());
-    let flags_a = try!(src.read_u8());
-    let flags_b = try!(src.read_u8());
-    let flags_c = try!(src.read_u8());
-    Ok((version,
-        (flags_a as u32) << 16 | (flags_b as u32) << 8 | (flags_c as u32)))
-}
-
-/// Skip over the entire contents of a box.
-fn skip_box_content<T: Read>(src: &mut BMFFBox<T>) -> Result<()> {
-    // Skip the contents of unknown chunks.
-    let to_skip = {
-        let header = src.get_header();
-        log!("{:?} (skipped)", header);
-        (header.size - header.offset) as usize
-    };
-    assert!(to_skip == src.bytes_left());
-    skip(src, to_skip)
-}
-
-/// Skip over the remain data of a box.
-fn skip_box_remain<T: Read>(src: &mut BMFFBox<T>) -> Result<()> {
-    let remain = {
-        let header = src.get_header();
-        let len = src.bytes_left();
-        log!("remain {} (skipped) in {:?}", len, header);
-        len
-    };
-    skip(src, remain)
-}
-
-macro_rules! check_parser_state {
-    ( $src:expr ) => {
-        if $src.limit() > 0 {
-            log!("bad parser state: {} content bytes left", $src.limit());
-            return Err(Error::InvalidData("unread box content or bad parser sync"));
-        }
-    }
-}
-
-/// Read the contents of a box, including sub boxes.
-///
-/// Metadata is accumulated in the passed-through `MediaContext` struct,
-/// which can be examined later.
-pub fn read_mp4<T: Read>(f: &mut T, context: &mut MediaContext) -> Result<()> {
-    let mut found_ftyp = false;
-    let mut found_moov = false;
-    // TODO(kinetik): Top-level parsing should handle zero-sized boxes
-    // rather than throwing an error.
-    let mut iter = BoxIter::new(f);
-    while let Some(mut b) = try!(iter.next_box()) {
-        // box ordering: ftyp before any variable length box (inc. moov),
-        // but may not be first box in file if file signatures etc. present
-        // fragmented mp4 order: ftyp, moov, pairs of moof/mdat (1-multiple), mfra
-
-        // "special": uuid, wide (= 8 bytes)
-        // isom: moov, mdat, free, skip, udta, ftyp, moof, mfra
-        // iso2: pdin, meta
-        // iso3: meco
-        // iso5: styp, sidx, ssix, prft
-        // unknown, maybe: id32
-
-        // qt: pnot
-
-        // possibly allow anything where all printable and/or all lowercase printable
-        // "four printable characters from the ISO 8859-1 character set"
-        match b.head.name {
-            BoxType::FileTypeBox => {
-                let ftyp = try!(read_ftyp(&mut b));
-                found_ftyp = true;
-                log!("{:?}", ftyp);
-            }
-            BoxType::MovieBox => {
-                try!(read_moov(&mut b, context));
-                found_moov = true;
-            }
-            _ => try!(skip_box_content(&mut b)),
-        };
-        check_parser_state!(b.content);
-        if found_moov {
-            log!("found moov {}, could stop pure 'moov' parser now", if found_ftyp {
-                "and ftyp"
-            } else {
-                "but no ftyp"
-            });
-        }
-    }
-
-    // XXX(kinetik): This isn't perfect, as a "moov" with no contents is
-    // treated as okay but we haven't found anything useful.  Needs more
-    // thought for clearer behaviour here.
-    if found_moov {
-        Ok(())
-    } else {
-        Err(Error::NoMoov)
-    }
-}
-
-fn parse_mvhd<T: Read>(f: &mut BMFFBox<T>) -> Result<(MovieHeaderBox, Option<MediaTimeScale>)> {
-    let mvhd = try!(read_mvhd(f));
-    if mvhd.timescale == 0 {
-        return Err(Error::InvalidData("zero timescale in mdhd"));
-    }
-    let timescale = Some(MediaTimeScale(mvhd.timescale as u64));
-    Ok((mvhd, timescale))
-}
-
-fn read_moov<T: Read>(f: &mut BMFFBox<T>, context: &mut MediaContext) -> Result<()> {
-    let mut iter = f.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::MovieHeaderBox => {
-                let (mvhd, timescale) = try!(parse_mvhd(&mut b));
-                context.timescale = timescale;
-                log!("{:?}", mvhd);
-            }
-            BoxType::TrackBox => {
-                let mut track = Track::new(context.tracks.len());
-                try!(read_trak(&mut b, &mut track));
-                context.tracks.push(track);
-            }
-            BoxType::MovieExtendsBox => {
-                let mvex = try!(read_mvex(&mut b));
-                log!("{:?}", mvex);
-                context.mvex = Some(mvex);
-            }
-            _ => try!(skip_box_content(&mut b)),
-        };
-        check_parser_state!(b.content);
-    }
-    Ok(())
-}
-
-fn read_mvex<T: Read>(src: &mut BMFFBox<T>) -> Result<MovieExtendsBox> {
-    let mut iter = src.box_iter();
-    let mut fragment_duration = None;
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::MovieExtendsHeaderBox => {
-                let duration = try!(read_mehd(&mut b));
-                fragment_duration = Some(duration);
-            },
-            _ => try!(skip_box_content(&mut b)),
-        }
-    }
-    Ok(MovieExtendsBox {
-        fragment_duration: fragment_duration,
-    })
-}
-
-fn read_mehd<T: Read>(src: &mut BMFFBox<T>) -> Result<MediaScaledTime> {
-    let (version, _) = try!(read_fullbox_extra(src));
-    let fragment_duration = match version {
-        1 => try!(be_u64(src)),
-        0 => try!(be_u32(src)) as u64,
-        _ => return Err(Error::InvalidData("unhandled mehd version")),
-    };
-    Ok(MediaScaledTime(fragment_duration))
-}
-
-fn read_trak<T: Read>(f: &mut BMFFBox<T>, track: &mut Track) -> Result<()> {
-    let mut iter = f.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::TrackHeaderBox => {
-                let tkhd = try!(read_tkhd(&mut b));
-                track.track_id = Some(tkhd.track_id);
-                track.tkhd = Some(tkhd.clone());
-                log!("{:?}", tkhd);
-            }
-            BoxType::EditBox => try!(read_edts(&mut b, track)),
-            BoxType::MediaBox => try!(read_mdia(&mut b, track)),
-            _ => try!(skip_box_content(&mut b)),
-        };
-        check_parser_state!(b.content);
-    }
-    Ok(())
-}
-
-fn read_edts<T: Read>(f: &mut BMFFBox<T>, track: &mut Track) -> Result<()> {
-    let mut iter = f.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::EditListBox => {
-                let elst = try!(read_elst(&mut b));
-                let mut empty_duration = 0;
-                let mut idx = 0;
-                if elst.edits.len() > 2 {
-                    return Err(Error::Unsupported("more than two edits"));
-                }
-                if elst.edits[idx].media_time == -1 {
-                    empty_duration = elst.edits[idx].segment_duration;
-                    if elst.edits.len() < 2 {
-                        return Err(Error::InvalidData("expected additional edit"));
-                    }
-                    idx += 1;
-                }
-                track.empty_duration = Some(MediaScaledTime(empty_duration));
-                if elst.edits[idx].media_time < 0 {
-                    return Err(Error::InvalidData("unexpected negative media time in edit"));
-                }
-                track.media_time = Some(TrackScaledTime(elst.edits[idx].media_time as u64,
-                                                        track.id));
-                log!("{:?}", elst);
-            }
-            _ => try!(skip_box_content(&mut b)),
-        };
-        check_parser_state!(b.content);
-    }
-    Ok(())
-}
-
-fn parse_mdhd<T: Read>(f: &mut BMFFBox<T>, track: &mut Track) -> Result<(MediaHeaderBox, Option<TrackScaledTime>, Option<TrackTimeScale>)> {
-    let mdhd = try!(read_mdhd(f));
-    let duration = match mdhd.duration {
-        std::u64::MAX => None,
-        duration => Some(TrackScaledTime(duration, track.id)),
-    };
-    if mdhd.timescale == 0 {
-        return Err(Error::InvalidData("zero timescale in mdhd"));
-    }
-    let timescale = Some(TrackTimeScale(mdhd.timescale as u64, track.id));
-    Ok((mdhd, duration, timescale))
-}
-
-fn read_mdia<T: Read>(f: &mut BMFFBox<T>, track: &mut Track) -> Result<()> {
-    let mut iter = f.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::MediaHeaderBox => {
-                let (mdhd, duration, timescale) = try!(parse_mdhd(&mut b, track));
-                track.duration = duration;
-                track.timescale = timescale;
-                log!("{:?}", mdhd);
-            }
-            BoxType::HandlerBox => {
-                let hdlr = try!(read_hdlr(&mut b));
-                match hdlr.handler_type {
-                    0x76696465 /* 'vide' */ => track.track_type = TrackType::Video,
-                    0x736f756e /* 'soun' */ => track.track_type = TrackType::Audio,
-                    _ => (),
-                }
-                log!("{:?}", hdlr);
-            }
-            BoxType::MediaInformationBox => try!(read_minf(&mut b, track)),
-            _ => try!(skip_box_content(&mut b)),
-        };
-        check_parser_state!(b.content);
-    }
-    Ok(())
-}
-
-fn read_minf<T: Read>(f: &mut BMFFBox<T>, track: &mut Track) -> Result<()> {
-    let mut iter = f.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::SampleTableBox => try!(read_stbl(&mut b, track)),
-            _ => try!(skip_box_content(&mut b)),
-        };
-        check_parser_state!(b.content);
-    }
-    Ok(())
-}
-
-fn read_stbl<T: Read>(f: &mut BMFFBox<T>, track: &mut Track) -> Result<()> {
-    let mut iter = f.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::SampleDescriptionBox => {
-                let stsd = try!(read_stsd(&mut b, track));
-                log!("{:?}", stsd);
-            }
-            BoxType::TimeToSampleBox => {
-                let stts = try!(read_stts(&mut b));
-                track.empty_sample_boxes.empty_stts = stts.samples.is_empty();
-                log!("{:?}", stts);
-            }
-            BoxType::SampleToChunkBox => {
-                let stsc = try!(read_stsc(&mut b));
-                track.empty_sample_boxes.empty_stsc = stsc.samples.is_empty();
-                log!("{:?}", stsc);
-            }
-            BoxType::SampleSizeBox => {
-                let stsz = try!(read_stsz(&mut b));
-                log!("{:?}", stsz);
-            }
-            BoxType::ChunkOffsetBox => {
-                let stco = try!(read_stco(&mut b));
-                track.empty_sample_boxes.empty_stco = stco.offsets.is_empty();
-                log!("{:?}", stco);
-            }
-            BoxType::ChunkLargeOffsetBox => {
-                let co64 = try!(read_co64(&mut b));
-                log!("{:?}", co64);
-            }
-            BoxType::SyncSampleBox => {
-                let stss = try!(read_stss(&mut b));
-                log!("{:?}", stss);
-            }
-            _ => try!(skip_box_content(&mut b)),
-        };
-        check_parser_state!(b.content);
-    }
-    Ok(())
-}
-
-/// Parse an ftyp box.
-fn read_ftyp<T: Read>(src: &mut BMFFBox<T>) -> Result<FileTypeBox> {
-    let major = try!(be_u32(src));
-    let minor = try!(be_u32(src));
-    let bytes_left = src.bytes_left();
-    if bytes_left % 4 != 0 {
-        return Err(Error::InvalidData("invalid ftyp size"));
-    }
-    // Is a brand_count of zero valid?
-    let brand_count = bytes_left / 4;
-    let mut brands = Vec::new();
-    for _ in 0..brand_count {
-        brands.push(try!(be_u32(src)));
-    }
-    Ok(FileTypeBox {
-        major_brand: major,
-        minor_version: minor,
-        compatible_brands: brands,
-    })
-}
-
-/// Parse an mvhd box.
-fn read_mvhd<T: Read>(src: &mut BMFFBox<T>) -> Result<MovieHeaderBox> {
-    let (version, _) = try!(read_fullbox_extra(src));
-    match version {
-        // 64 bit creation and modification times.
-        1 => {
-            try!(skip(src, 16));
-        }
-        // 32 bit creation and modification times.
-        0 => {
-            try!(skip(src, 8));
-        }
-        _ => return Err(Error::InvalidData("unhandled mvhd version")),
-    }
-    let timescale = try!(be_u32(src));
-    let duration = match version {
-        1 => try!(be_u64(src)),
-        0 => {
-            let d = try!(be_u32(src));
-            if d == std::u32::MAX {
-                std::u64::MAX
-            } else {
-                d as u64
-            }
-        }
-        _ => return Err(Error::InvalidData("unhandled mvhd version")),
-    };
-    // Skip remaining fields.
-    try!(skip(src, 80));
-    Ok(MovieHeaderBox {
-        timescale: timescale,
-        duration: duration,
-    })
-}
-
-/// Parse a tkhd box.
-fn read_tkhd<T: Read>(src: &mut BMFFBox<T>) -> Result<TrackHeaderBox> {
-    let (version, flags) = try!(read_fullbox_extra(src));
-    let disabled = flags & 0x1u32 == 0 || flags & 0x2u32 == 0;
-    match version {
-        // 64 bit creation and modification times.
-        1 => {
-            try!(skip(src, 16));
-        }
-        // 32 bit creation and modification times.
-        0 => {
-            try!(skip(src, 8));
-        }
-        _ => return Err(Error::InvalidData("unhandled tkhd version")),
-    }
-    let track_id = try!(be_u32(src));
-    try!(skip(src, 4));
-    let duration = match version {
-        1 => try!(be_u64(src)),
-        0 => try!(be_u32(src)) as u64,
-        _ => return Err(Error::InvalidData("unhandled tkhd version")),
-    };
-    // Skip uninteresting fields.
-    try!(skip(src, 52));
-    let width = try!(be_u32(src));
-    let height = try!(be_u32(src));
-    Ok(TrackHeaderBox {
-        track_id: track_id,
-        disabled: disabled,
-        duration: duration,
-        width: width,
-        height: height,
-    })
-}
-
-/// Parse a elst box.
-fn read_elst<T: Read>(src: &mut BMFFBox<T>) -> Result<EditListBox> {
-    let (version, _) = try!(read_fullbox_extra(src));
-    let edit_count = try!(be_u32(src));
-    if edit_count == 0 {
-        return Err(Error::InvalidData("invalid edit count"));
-    }
-    let mut edits = Vec::new();
-    for _ in 0..edit_count {
-        let (segment_duration, media_time) = match version {
-            1 => {
-                // 64 bit segment duration and media times.
-                (try!(be_u64(src)), try!(be_i64(src)))
-            }
-            0 => {
-                // 32 bit segment duration and media times.
-                (try!(be_u32(src)) as u64, try!(be_i32(src)) as i64)
-            }
-            _ => return Err(Error::InvalidData("unhandled elst version")),
-        };
-        let media_rate_integer = try!(be_i16(src));
-        let media_rate_fraction = try!(be_i16(src));
-        edits.push(Edit {
-            segment_duration: segment_duration,
-            media_time: media_time,
-            media_rate_integer: media_rate_integer,
-            media_rate_fraction: media_rate_fraction,
-        })
-    }
-
-    Ok(EditListBox {
-        edits: edits,
-    })
-}
-
-/// Parse a mdhd box.
-fn read_mdhd<T: Read>(src: &mut BMFFBox<T>) -> Result<MediaHeaderBox> {
-    let (version, _) = try!(read_fullbox_extra(src));
-    let (timescale, duration) = match version {
-        1 => {
-            // Skip 64-bit creation and modification times.
-            try!(skip(src, 16));
-
-            // 64 bit duration.
-            (try!(be_u32(src)), try!(be_u64(src)))
-        }
-        0 => {
-            // Skip 32-bit creation and modification times.
-            try!(skip(src, 8));
-
-            // 32 bit duration.
-            let timescale = try!(be_u32(src));
-            let duration = {
-                // Since we convert the 32-bit duration to 64-bit by
-                // upcasting, we need to preserve the special all-1s
-                // ("unknown") case by hand.
-                let d = try!(be_u32(src));
-                if d == std::u32::MAX {
-                    std::u64::MAX
-                } else {
-                    d as u64
-                }
-            };
-            (timescale, duration)
-        }
-        _ => return Err(Error::InvalidData("unhandled mdhd version")),
-    };
-
-    // Skip uninteresting fields.
-    try!(skip(src, 4));
-
-    Ok(MediaHeaderBox {
-        timescale: timescale,
-        duration: duration,
-    })
-}
-
-/// Parse a stco box.
-fn read_stco<T: Read>(src: &mut BMFFBox<T>) -> Result<ChunkOffsetBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-    let offset_count = try!(be_u32(src));
-    let mut offsets = Vec::new();
-    for _ in 0..offset_count {
-        offsets.push(try!(be_u32(src)) as u64);
-    }
-
-    // Padding could be added in some contents.
-    try!(skip_box_remain(src));
-
-    Ok(ChunkOffsetBox {
-        offsets: offsets,
-    })
-}
-
-/// Parse a co64 box.
-fn read_co64<T: Read>(src: &mut BMFFBox<T>) -> Result<ChunkOffsetBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-    let offset_count = try!(be_u32(src));
-    let mut offsets = Vec::new();
-    for _ in 0..offset_count {
-        offsets.push(try!(be_u64(src)));
-    }
-
-    // Padding could be added in some contents.
-    try!(skip_box_remain(src));
-
-    Ok(ChunkOffsetBox {
-        offsets: offsets,
-    })
-}
-
-/// Parse a stss box.
-fn read_stss<T: Read>(src: &mut BMFFBox<T>) -> Result<SyncSampleBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-    let sample_count = try!(be_u32(src));
-    let mut samples = Vec::new();
-    for _ in 0..sample_count {
-        samples.push(try!(be_u32(src)));
-    }
-
-    // Padding could be added in some contents.
-    try!(skip_box_remain(src));
-
-    Ok(SyncSampleBox {
-        samples: samples,
-    })
-}
-
-/// Parse a stsc box.
-fn read_stsc<T: Read>(src: &mut BMFFBox<T>) -> Result<SampleToChunkBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-    let sample_count = try!(be_u32(src));
-    let mut samples = Vec::new();
-    for _ in 0..sample_count {
-        let first_chunk = try!(be_u32(src));
-        let samples_per_chunk = try!(be_u32(src));
-        let sample_description_index = try!(be_u32(src));
-        samples.push(SampleToChunk {
-            first_chunk: first_chunk,
-            samples_per_chunk: samples_per_chunk,
-            sample_description_index: sample_description_index,
-        });
-    }
-
-    // Padding could be added in some contents.
-    try!(skip_box_remain(src));
-
-    Ok(SampleToChunkBox {
-        samples: samples,
-    })
-}
-
-/// Parse a stsz box.
-fn read_stsz<T: Read>(src: &mut BMFFBox<T>) -> Result<SampleSizeBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-    let sample_size = try!(be_u32(src));
-    let sample_count = try!(be_u32(src));
-    let mut sample_sizes = Vec::new();
-    if sample_size == 0 {
-        for _ in 0..sample_count {
-            sample_sizes.push(try!(be_u32(src)));
-        }
-    }
-
-    // Padding could be added in some contents.
-    try!(skip_box_remain(src));
-
-    Ok(SampleSizeBox {
-        sample_size: sample_size,
-        sample_sizes: sample_sizes,
-    })
-}
-
-/// Parse a stts box.
-fn read_stts<T: Read>(src: &mut BMFFBox<T>) -> Result<TimeToSampleBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-    let sample_count = try!(be_u32(src));
-    let mut samples = Vec::new();
-    for _ in 0..sample_count {
-        let sample_count = try!(be_u32(src));
-        let sample_delta = try!(be_u32(src));
-        samples.push(Sample {
-            sample_count: sample_count,
-            sample_delta: sample_delta,
-        });
-    }
-
-    // Padding could be added in some contents.
-    try!(skip_box_remain(src));
-
-    Ok(TimeToSampleBox {
-        samples: samples,
-    })
-}
-
-/// Parse a VPx Config Box.
-fn read_vpcc<T: Read>(src: &mut BMFFBox<T>) -> Result<VPxConfigBox> {
-    let (version, _) = try!(read_fullbox_extra(src));
-    if version != 0 {
-        return Err(Error::Unsupported("unknown vpcC version"));
-    }
-
-    let profile = try!(src.read_u8());
-    let level = try!(src.read_u8());
-    let (bit_depth, color_space) = {
-        let byte = try!(src.read_u8());
-        ((byte >> 4) & 0x0f, byte & 0x0f)
-    };
-    let (chroma_subsampling, transfer_function, video_full_range) = {
-        let byte = try!(src.read_u8());
-        ((byte >> 4) & 0x0f, (byte >> 1) & 0x07, (byte & 1) == 1)
-    };
-
-    let codec_init_size = try!(be_u16(src));
-    let codec_init = try!(read_buf(src, codec_init_size as usize));
-
-    // TODO(rillian): validate field value ranges.
-    Ok(VPxConfigBox {
-        profile: profile,
-        level: level,
-        bit_depth: bit_depth,
-        color_space: color_space,
-        chroma_subsampling: chroma_subsampling,
-        transfer_function: transfer_function,
-        video_full_range: video_full_range,
-        codec_init: codec_init,
-    })
-}
-
-fn read_flac_metadata<T: Read>(src: &mut BMFFBox<T>) -> Result<FLACMetadataBlock> {
-    let temp = try!(src.read_u8());
-    let block_type = temp & 0x7f;
-    let length = try!(be_u24(src));
-    if length as usize > src.bytes_left() {
-        return Err(Error::InvalidData(
-                "FLACMetadataBlock larger than parent box"));
-    }
-    let data = try!(read_buf(src, length as usize));
-    Ok(FLACMetadataBlock {
-        block_type: block_type,
-        data: data,
-    })
-}
-
-fn read_esds<T: Read>(src: &mut BMFFBox<T>) -> Result<ES_Descriptor> {
-    // Tags for elementary stream description
-    const ESDESCR_TAG: u8          = 0x03;
-    const DECODER_CONFIG_TAG: u8   = 0x04;
-    const DECODER_SPECIFIC_TAG: u8 = 0x05;
-
-    let frequency_table =
-        vec![(0x1, 96000), (0x1, 88200), (0x2, 64000), (0x3, 48000),
-             (0x4, 44100), (0x5, 32000), (0x6, 24000), (0x7, 22050),
-             (0x8, 16000), (0x9, 12000), (0xa, 11025), (0xb, 8000),
-             (0xc, 7350)];
-
-    let (_, _) = try!(read_fullbox_extra(src));
-
-    let esds_size = src.head.size - src.head.offset - 4;
-    if esds_size > BUF_SIZE_LIMIT {
-        return Err(Error::InvalidData("esds box exceeds BUF_SIZE_LIMIT"));
-    }
-    let esds_array = try!(read_buf(src, esds_size as usize));
-
-    // Parsing DecoderConfig descriptor to get the object_profile_indicator
-    // for correct codec type, audio sample rate and channel counts.
-    let (object_profile_indicator, sample_frequency, channels) = {
-        let mut object_profile: u8 = 0;
-        let mut sample_frequency = None;
-        let mut channels = None;
-
-        // clone a esds cursor for parsing.
-        let esds = &mut Cursor::new(&esds_array);
-        let next_tag = try!(esds.read_u8());
-
-        if next_tag != ESDESCR_TAG {
-            return Err(Error::Unsupported("fail to parse ES descriptor"));
-        }
-
-        let esds_extend = try!(esds.read_u8());
-        // extension tag start from 0x80.
-        let esds_end = if esds_extend >= 0x80 {
-            // skip remaining extension.
-            try!(skip(esds, 2));
-            esds.position() + try!(esds.read_u8()) as u64
-        } else {
-            esds.position() + esds_extend as u64
-        };
-        try!(skip(esds, 2));
-
-        let esds_flags = try!(esds.read_u8());
-
-        // Stream dependency flag, first bit from left most.
-        if esds_flags & 0x80 > 0 {
-            // Skip uninteresting fields.
-            try!(skip(esds, 2));
-        }
-
-        // Url flag, second bit from left most.
-        if esds_flags & 0x40 > 0 {
-            // Skip uninteresting fields.
-            let skip_es_len: usize = try!(esds.read_u8()) as usize + 2;
-            try!(skip(esds, skip_es_len));
-        }
-
-        // find DecoderConfig descriptor (tag = DECODER_CONFIG_TAG)
-        if esds_end > esds.position() {
-            let next_tag = try!(esds.read_u8());
-            if next_tag == DECODER_CONFIG_TAG {
-                let dcds_extend = try!(esds.read_u8());
-                // extension tag start from 0x80.
-                if dcds_extend >= 0x80 {
-                    // skip remains extension and length.
-                    try!(skip(esds, 3));
-                }
-
-                object_profile = try!(esds.read_u8());
-
-                // Skip uninteresting fields.
-                try!(skip(esds, 12));
-            }
-        }
-
-
-        // find DecoderSpecific descriptor (tag = DECODER_SPECIFIC_TAG)
-        if esds_end > esds.position() {
-            let next_tag = try!(esds.read_u8());
-            if next_tag == DECODER_SPECIFIC_TAG {
-                let dsds_extend = try!(esds.read_u8());
-                // extension tag start from 0x80.
-                if dsds_extend >= 0x80 {
-                    // skip remains extension and length.
-                    try!(skip(esds, 3));
-                }
-
-                let audio_specific_config = try!(be_u16(esds));
-
-                let sample_index = (audio_specific_config & 0x07FF) >> 7;
-
-                let channel_counts = (audio_specific_config & 0x007F) >> 3;
-
-                sample_frequency =
-                    frequency_table.iter().find(|item| item.0 == sample_index).map(|x| x.1);
-
-                channels = Some(channel_counts);
-            }
-        }
-
-        (object_profile, sample_frequency, channels)
-    };
-
-    let codec = match object_profile_indicator {
-        0x40 | 0x41 => CodecType::AAC,
-        0x6B => CodecType::MP3,
-        _ => CodecType::Unknown,
-    };
-
-    if codec == CodecType::Unknown {
-        return Err(Error::Unsupported("unknown audio codec"));
-    }
-
-    Ok(ES_Descriptor {
-        audio_codec: codec,
-        audio_sample_rate: sample_frequency,
-        audio_channel_count: channels,
-        codec_specific_config: esds_array,
-    })
-}
-
-/// Parse `FLACSpecificBox`.
-fn read_dfla<T: Read>(src: &mut BMFFBox<T>) -> Result<FLACSpecificBox> {
-    let (version, flags) = try!(read_fullbox_extra(src));
-    if version != 0 {
-        return Err(Error::Unsupported("unknown dfLa (FLAC) version"));
-    }
-    if flags != 0 {
-        return Err(Error::InvalidData("no-zero dfLa (FLAC) flags"));
-    }
-    let mut blocks = Vec::new();
-    while src.bytes_left() > 0 {
-        let block = try!(read_flac_metadata(src));
-        blocks.push(block);
-    }
-    // The box must have at least one meta block, and the first block
-    // must be the METADATA_BLOCK_STREAMINFO
-    if blocks.is_empty() {
-        return Err(Error::InvalidData("FLACSpecificBox missing metadata"));
-    } else if blocks[0].block_type != 0 {
-        println!("flac metadata block:\n  {:?}", blocks[0]);
-        return Err(Error::InvalidData(
-                "FLACSpecificBox must have STREAMINFO metadata first"));
-    } else if blocks[0].data.len() != 34 {
-        return Err(Error::InvalidData(
-                "FLACSpecificBox STREAMINFO block is the wrong size"));
-    }
-    Ok(FLACSpecificBox {
-        version: version,
-        blocks: blocks,
-    })
-}
-
-/// Parse `OpusSpecificBox`.
-fn read_dops<T: Read>(src: &mut BMFFBox<T>) -> Result<OpusSpecificBox> {
-    let version = try!(src.read_u8());
-    if version != 0 {
-        return Err(Error::Unsupported("unknown dOps (Opus) version"));
-    }
-
-    let output_channel_count = try!(src.read_u8());
-    let pre_skip = try!(be_u16(src));
-    let input_sample_rate = try!(be_u32(src));
-    let output_gain = try!(be_i16(src));
-    let channel_mapping_family = try!(src.read_u8());
-
-    let channel_mapping_table = if channel_mapping_family == 0 {
-        None
-    } else {
-        let stream_count = try!(src.read_u8());
-        let coupled_count = try!(src.read_u8());
-        let channel_mapping = try!(read_buf(src, output_channel_count as usize));
-
-        Some(ChannelMappingTable {
-            stream_count: stream_count,
-            coupled_count: coupled_count,
-            channel_mapping: channel_mapping,
-        })
-    };
-
-    // TODO(kinetik): validate field value ranges.
-    Ok(OpusSpecificBox {
-        version: version,
-        output_channel_count: output_channel_count,
-        pre_skip: pre_skip,
-        input_sample_rate: input_sample_rate,
-        output_gain: output_gain,
-        channel_mapping_family: channel_mapping_family,
-        channel_mapping_table: channel_mapping_table,
-    })
-}
-
-/// Re-serialize the Opus codec-specific config data as an `OpusHead` packet.
-///
-/// Some decoders expect the initialization data in the format used by the
-/// Ogg and WebM encapsulations. To support this we prepend the `OpusHead`
-/// tag and byte-swap the data from big- to little-endian relative to the
-/// dOps box.
-pub fn serialize_opus_header<W: byteorder::WriteBytesExt + std::io::Write>(opus: &OpusSpecificBox, dst: &mut W) -> Result<()> {
-    match dst.write(b"OpusHead") {
-        Err(e) => return Err(Error::from(e)),
-        Ok(bytes) => {
-            if bytes != 8 {
-                return Err(Error::InvalidData("Couldn't write OpusHead tag."));
-            }
-        }
-    }
-    // In mp4 encapsulation, the version field is 0, but in ogg
-    // it is 1. While decoders generally accept zero as well, write
-    // out the version of the header we're supporting rather than
-    // whatever we parsed out of mp4.
-    try!(dst.write_u8(1));
-    try!(dst.write_u8(opus.output_channel_count));
-    try!(dst.write_u16::<byteorder::LittleEndian>(opus.pre_skip));
-    try!(dst.write_u32::<byteorder::LittleEndian>(opus.input_sample_rate));
-    try!(dst.write_i16::<byteorder::LittleEndian>(opus.output_gain));
-    try!(dst.write_u8(opus.channel_mapping_family));
-    match opus.channel_mapping_table {
-        None => {}
-        Some(ref table) => {
-            try!(dst.write_u8(table.stream_count));
-            try!(dst.write_u8(table.coupled_count));
-            match dst.write(&table.channel_mapping) {
-                Err(e) => return Err(Error::from(e)),
-                Ok(bytes) => {
-                    if bytes != table.channel_mapping.len() {
-                        return Err(Error::InvalidData("Couldn't write channel mapping table data."));
-                    }
-                }
-            }
-        }
-    };
-    Ok(())
-}
-
-/// Parse a hdlr box.
-fn read_hdlr<T: Read>(src: &mut BMFFBox<T>) -> Result<HandlerBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-
-    // Skip uninteresting fields.
-    try!(skip(src, 4));
-
-    let handler_type = try!(be_u32(src));
-
-    // Skip uninteresting fields.
-    try!(skip(src, 12));
-
-    let bytes_left = src.bytes_left();
-    let _name = try!(read_null_terminated_string(src, bytes_left));
-
-    Ok(HandlerBox {
-        handler_type: handler_type,
-    })
-}
-
-/// Parse an video description inside an stsd box.
-fn read_video_sample_entry<T: Read>(src: &mut BMFFBox<T>, track: &mut Track) -> Result<SampleEntry> {
-    let name = src.get_header().name;
-    track.codec_type = match name {
-        BoxType::AVCSampleEntry | BoxType::AVC3SampleEntry => CodecType::H264,
-        BoxType::VP8SampleEntry => CodecType::VP8,
-        BoxType::VP9SampleEntry => CodecType::VP9,
-        BoxType::ProtectedVisualSampleEntry => CodecType::EncryptedVideo,
-        _ => CodecType::Unknown,
-    };
-
-    // Skip uninteresting fields.
-    try!(skip(src, 6));
-
-    let data_reference_index = try!(be_u16(src));
-
-    // Skip uninteresting fields.
-    try!(skip(src, 16));
-
-    let width = try!(be_u16(src));
-    let height = try!(be_u16(src));
-
-    // Skip uninteresting fields.
-    try!(skip(src, 14));
-
-    let _compressorname = try!(read_fixed_length_pascal_string(src, 32));
-
-    // Skip uninteresting fields.
-    try!(skip(src, 4));
-
-    // Skip clap/pasp/etc. for now.
-    let mut codec_specific = None;
-    let mut iter = src.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::AVCConfigurationBox => {
-                if (name != BoxType::AVCSampleEntry &&
-                    name != BoxType::AVC3SampleEntry &&
-                    name != BoxType::ProtectedVisualSampleEntry) ||
-                    codec_specific.is_some() {
-                        return Err(Error::InvalidData("malformed video sample entry"));
-                    }
-                let avcc_size = b.head.size - b.head.offset;
-                if avcc_size > BUF_SIZE_LIMIT {
-                    return Err(Error::InvalidData("avcC box exceeds BUF_SIZE_LIMIT"));
-                }
-                let avcc = try!(read_buf(&mut b.content, avcc_size as usize));
-                // TODO(kinetik): Parse avcC box?  For now we just stash the data.
-                codec_specific = Some(VideoCodecSpecific::AVCConfig(avcc));
-            }
-            BoxType::VPCodecConfigurationBox => { // vpcC
-                if (name != BoxType::VP8SampleEntry &&
-                    name != BoxType::VP9SampleEntry) ||
-                    codec_specific.is_some() {
-                        return Err(Error::InvalidData("malformed video sample entry"));
-                    }
-                let vpcc = try!(read_vpcc(&mut b));
-                codec_specific = Some(VideoCodecSpecific::VPxConfig(vpcc));
-            }
-            _ => try!(skip_box_content(&mut b)),
-        }
-        check_parser_state!(b.content);
-    }
-
-    codec_specific
-        .map(|codec_specific| SampleEntry::Video(VideoSampleEntry {
-            data_reference_index: data_reference_index,
-            width: width,
-            height: height,
-            codec_specific: codec_specific,
-        }))
-        .ok_or_else(|| Error::InvalidData("malformed video sample entry"))
-}
-
-fn read_qt_wave_atom<T: Read>(src: &mut BMFFBox<T>) -> Result<ES_Descriptor> {
-    let mut codec_specific = None;
-    let mut iter = src.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::ESDBox => {
-                let esds = try!(read_esds(&mut b));
-                codec_specific = Some(esds);
-            },
-            _ => try!(skip_box_content(&mut b)),
-        }
-    }
-
-    codec_specific.ok_or_else(|| Error::InvalidData("malformed audio sample entry"))
-}
-
-/// Parse an audio description inside an stsd box.
-fn read_audio_sample_entry<T: Read>(src: &mut BMFFBox<T>, track: &mut Track) -> Result<SampleEntry> {
-    let name = src.get_header().name;
-    track.codec_type = match name {
-        // TODO(kinetik): stagefright inspects ESDS to detect MP3 (audio/mpeg).
-        BoxType::MP4AudioSampleEntry => CodecType::AAC,
-        BoxType::FLACSampleEntry => CodecType::FLAC,
-        BoxType::OpusSampleEntry => CodecType::Opus,
-        BoxType::ProtectedAudioSampleEntry => CodecType::EncryptedAudio,
-        _ => CodecType::Unknown,
-    };
-
-    // Skip uninteresting fields.
-    try!(skip(src, 6));
-
-    let data_reference_index = try!(be_u16(src));
-
-    // XXX(kinetik): This is "reserved" in BMFF, but some old QT MOV variant
-    // uses it, need to work out if we have to support it.  Without checking
-    // here and reading extra fields after samplerate (or bailing with an
-    // error), the parser loses sync completely.
-    let version = try!(be_u16(src));
-
-    // Skip uninteresting fields.
-    try!(skip(src, 6));
-
-    let channelcount = try!(be_u16(src));
-    let samplesize = try!(be_u16(src));
-
-    // Skip uninteresting fields.
-    try!(skip(src, 4));
-
-    let samplerate = try!(be_u32(src));
-
-    match version {
-        0 => (),
-        1 => {
-            // Quicktime sound sample description version 1.
-            // Skip uninteresting fields.
-            try!(skip(src, 16));
-        },
-        _ => return Err(Error::Unsupported("unsupported non-isom audio sample entry")),
-    }
-
-    // Skip chan/etc. for now.
-    let mut codec_specific = None;
-    let mut iter = src.box_iter();
-    while let Some(mut b) = try!(iter.next_box()) {
-        match b.head.name {
-            BoxType::ESDBox => {
-                if (name != BoxType::MP4AudioSampleEntry &&
-                    name != BoxType::ProtectedAudioSampleEntry) ||
-                    codec_specific.is_some() {
-                        return Err(Error::InvalidData("malformed audio sample entry"));
-                }
-
-                let esds = try!(read_esds(&mut b));
-                track.codec_type = esds.audio_codec;
-                codec_specific = Some(AudioCodecSpecific::ES_Descriptor(esds));
-            }
-            BoxType::FLACSpecificBox => {
-                if name != BoxType::FLACSampleEntry ||
-                    codec_specific.is_some() {
-                    return Err(Error::InvalidData("malformed audio sample entry"));
-                }
-                let dfla = try!(read_dfla(&mut b));
-                track.codec_type = CodecType::FLAC;
-                codec_specific = Some(AudioCodecSpecific::FLACSpecificBox(dfla));
-            }
-            BoxType::OpusSpecificBox => {
-                if name != BoxType::OpusSampleEntry ||
-                    codec_specific.is_some() {
-                    return Err(Error::InvalidData("malformed audio sample entry"));
-                }
-                let dops = try!(read_dops(&mut b));
-                track.codec_type = CodecType::Opus;
-                codec_specific = Some(AudioCodecSpecific::OpusSpecificBox(dops));
-            }
-            BoxType::QTWaveAtom => {
-                let qt_esds = try!(read_qt_wave_atom(&mut b));
-                track.codec_type = qt_esds.audio_codec;
-                codec_specific = Some(AudioCodecSpecific::ES_Descriptor(qt_esds));
-            }
-            _ => try!(skip_box_content(&mut b)),
-        }
-        check_parser_state!(b.content);
-    }
-
-    codec_specific
-        .map(|codec_specific| SampleEntry::Audio(AudioSampleEntry {
-            data_reference_index: data_reference_index,
-            channelcount: channelcount,
-            samplesize: samplesize,
-            samplerate: samplerate,
-            codec_specific: codec_specific,
-        }))
-        .ok_or_else(|| Error::InvalidData("malformed audio sample entry"))
-}
-
-/// Parse a stsd box.
-fn read_stsd<T: Read>(src: &mut BMFFBox<T>, track: &mut Track) -> Result<SampleDescriptionBox> {
-    let (_, _) = try!(read_fullbox_extra(src));
-
-    let description_count = try!(be_u32(src));
-    let mut descriptions = Vec::new();
-
-    {
-        // TODO(kinetik): check if/when more than one desc per track? do we need to support?
-        let mut iter = src.box_iter();
-        while let Some(mut b) = try!(iter.next_box()) {
-            let description = match track.track_type {
-                TrackType::Video => read_video_sample_entry(&mut b, track),
-                TrackType::Audio => read_audio_sample_entry(&mut b, track),
-                TrackType::Unknown => Err(Error::Unsupported("unknown track type")),
-            };
-            let description = match description {
-                Ok(desc) => desc,
-                Err(Error::Unsupported(_)) => {
-                    // read_{audio,video}_desc may have returned Unsupported
-                    // after partially reading the box content, so we can't
-                    // simply use skip_box_content here.
-                    let to_skip = b.bytes_left();
-                    try!(skip(&mut b, to_skip));
-                    SampleEntry::Unknown
-                }
-                Err(e) => return Err(e),
-            };
-            if track.data.is_none() {
-                track.data = Some(description.clone());
-            } else {
-                log!("** don't know how to handle multiple descriptions **");
-            }
-            descriptions.push(description);
-            check_parser_state!(b.content);
-            if descriptions.len() == description_count as usize {
-                break;
-            }
-        }
-    }
-
-    // Padding could be added in some contents.
-    try!(skip_box_remain(src));
-
-    Ok(SampleDescriptionBox {
-        descriptions: descriptions,
-    })
-}
-
-/// Skip a number of bytes that we don't care to parse.
-fn skip<T: Read>(src: &mut T, mut bytes: usize) -> Result<()> {
-    const BUF_SIZE: usize = 64 * 1024;
-    let mut buf = vec![0; BUF_SIZE];
-    while bytes > 0 {
-        let buf_size = cmp::min(bytes, BUF_SIZE);
-        let len = try!(src.take(buf_size as u64).read(&mut buf));
-        if len == 0 {
-            return Err(Error::UnexpectedEOF);
-        }
-        bytes -= len;
-    }
-    Ok(())
-}
-
-/// Read size bytes into a Vector or return error.
-fn read_buf<T: ReadBytesExt>(src: &mut T, size: usize) -> Result<Vec<u8>> {
-    let mut buf = vec![0; size];
-    let r = try!(src.read(&mut buf));
-    if r != size {
-        return Err(Error::InvalidData("failed buffer read"));
-    }
-    Ok(buf)
-}
-
-// TODO(kinetik): Find a copy of ISO/IEC 14496-1 to confirm various string encodings.
-// XXX(kinetik): definition of "null-terminated" string is fuzzy, we have:
-// - zero or more byte strings, with a single null terminating the string.
-// - zero byte strings with no null terminator (i.e. zero space in the box for the string)
-// - length-prefixed strings with no null terminator (e.g. bear_rotate_0.mp4)
-fn read_null_terminated_string<T: ReadBytesExt>(src: &mut T, mut size: usize) -> Result<String> {
-    let mut buf = Vec::new();
-    while size > 0 {
-        let c = try!(src.read_u8());
-        if c == 0 {
-            break;
-        }
-        buf.push(c);
-        size -= 1;
-    }
-    String::from_utf8(buf).map_err(From::from)
-}
-
-#[allow(dead_code)]
-fn read_pascal_string<T: ReadBytesExt>(src: &mut T) -> Result<String> {
-    let len = try!(src.read_u8());
-    let buf = try!(read_buf(src, len as usize));
-    String::from_utf8(buf).map_err(From::from)
-}
-
-// Weird string encoding with a length prefix and a fixed sized buffer which
-// contains padding if the string doesn't fill the buffer.
-fn read_fixed_length_pascal_string<T: Read>(src: &mut T, size: usize) -> Result<String> {
-    assert!(size > 0);
-    let len = cmp::min(try!(src.read_u8()) as usize, size - 1);
-    let buf = try!(read_buf(src, len));
-    try!(skip(src, size - 1 - buf.len()));
-    String::from_utf8(buf).map_err(From::from)
-}
-
-fn be_i16<T: ReadBytesExt>(src: &mut T) -> Result<i16> {
-    src.read_i16::<byteorder::BigEndian>().map_err(From::from)
-}
-
-fn be_i32<T: ReadBytesExt>(src: &mut T) -> Result<i32> {
-    src.read_i32::<byteorder::BigEndian>().map_err(From::from)
-}
-
-fn be_i64<T: ReadBytesExt>(src: &mut T) -> Result<i64> {
-    src.read_i64::<byteorder::BigEndian>().map_err(From::from)
-}
-
-fn be_u16<T: ReadBytesExt>(src: &mut T) -> Result<u16> {
-    src.read_u16::<byteorder::BigEndian>().map_err(From::from)
-}
-
-fn be_u24<T: ReadBytesExt>(src: &mut T) -> Result<u32> {
-    src.read_uint::<byteorder::BigEndian>(3)
-        .map(|v| v as u32)
-        .map_err(From::from)
-}
-
-fn be_u32<T: ReadBytesExt>(src: &mut T) -> Result<u32> {
-    src.read_u32::<byteorder::BigEndian>().map_err(From::from)
-}
-
-fn be_u64<T: ReadBytesExt>(src: &mut T) -> Result<u64> {
-    src.read_u64::<byteorder::BigEndian>().map_err(From::from)
-}
diff --git a/media/libstagefright/binding/mp4parse/src/tests.rs b/media/libstagefright/binding/mp4parse/src/tests.rs
deleted file mode 100644
index 7063b37906..0000000000
--- a/media/libstagefright/binding/mp4parse/src/tests.rs
+++ /dev/null
@@ -1,860 +0,0 @@
-//! Module for parsing ISO Base Media Format aka video/mp4 streams.
-//! Internal unit tests.
-
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-use std::io::Cursor;
-use super::read_mp4;
-use super::MediaContext;
-use super::Error;
-extern crate test_assembler;
-use self::test_assembler::*;
-
-use boxes::BoxType;
-
-enum BoxSize {
-    Short(u32),
-    Long(u64),
-    UncheckedShort(u32),
-    UncheckedLong(u64),
-    Auto,
-}
-
-fn make_box<F>(size: BoxSize, name: &[u8; 4], func: F) -> Cursor<Vec<u8>>
-    where F: Fn(Section) -> Section
-{
-    let mut section = Section::new();
-    let box_size = Label::new();
-    section = match size {
-        BoxSize::Short(size) | BoxSize::UncheckedShort(size) => section.B32(size),
-        BoxSize::Long(_) | BoxSize::UncheckedLong(_) => section.B32(1),
-        BoxSize::Auto => section.B32(&box_size),
-    };
-    section = section.append_bytes(name);
-    section = match size {
-        // The spec allows the 32-bit size to be 0 to indicate unknown
-        // length streams.  It's not clear if this is valid when using a
-        // 64-bit size, so prohibit it for now.
-        BoxSize::Long(size) => {
-            assert!(size > 0);
-            section.B64(size)
-        }
-        BoxSize::UncheckedLong(size) => section.B64(size),
-        _ => section,
-    };
-    section = func(section);
-    match size {
-        BoxSize::Short(size) => {
-            if size > 0 {
-                assert_eq!(size as u64, section.size())
-            }
-        }
-        BoxSize::Long(size) => assert_eq!(size, section.size()),
-        BoxSize::Auto => {
-            assert!(section.size() <= u32::max_value() as u64,
-                    "Tried to use a long box with BoxSize::Auto");
-            box_size.set_const(section.size());
-        }
-        // Skip checking BoxSize::Unchecked* cases.
-        _ => (),
-    }
-    Cursor::new(section.get_contents().unwrap())
-}
-
-fn make_fullbox<F>(size: BoxSize, name: &[u8; 4], version: u8, func: F) -> Cursor<Vec<u8>>
-    where F: Fn(Section) -> Section
-{
-    make_box(size, name, |s| {
-        func(s.B8(version)
-              .B8(0)
-              .B8(0)
-              .B8(0))
-    })
-}
-
-#[test]
-fn read_box_header_short() {
-    let mut stream = make_box(BoxSize::Short(8), b"test", |s| s);
-    let header = super::read_box_header(&mut stream).unwrap();
-    assert_eq!(header.name, BoxType::UnknownBox(0x74657374)); // "test"
-    assert_eq!(header.size, 8);
-}
-
-#[test]
-fn read_box_header_long() {
-    let mut stream = make_box(BoxSize::Long(16), b"test", |s| s);
-    let header = super::read_box_header(&mut stream).unwrap();
-    assert_eq!(header.name, BoxType::UnknownBox(0x74657374)); // "test"
-    assert_eq!(header.size, 16);
-}
-
-#[test]
-fn read_box_header_short_unknown_size() {
-    let mut stream = make_box(BoxSize::Short(0), b"test", |s| s);
-    match super::read_box_header(&mut stream) {
-        Err(Error::Unsupported(s)) => assert_eq!(s, "unknown sized box"),
-        _ => panic!("unexpected result reading box with unknown size"),
-    };
-}
-
-#[test]
-fn read_box_header_short_invalid_size() {
-    let mut stream = make_box(BoxSize::UncheckedShort(2), b"test", |s| s);
-    match super::read_box_header(&mut stream) {
-        Err(Error::InvalidData(s)) => assert_eq!(s, "malformed size"),
-        _ => panic!("unexpected result reading box with invalid size"),
-    };
-}
-
-#[test]
-fn read_box_header_long_invalid_size() {
-    let mut stream = make_box(BoxSize::UncheckedLong(2), b"test", |s| s);
-    match super::read_box_header(&mut stream) {
-        Err(Error::InvalidData(s)) => assert_eq!(s, "malformed wide size"),
-        _ => panic!("unexpected result reading box with invalid size"),
-    };
-}
-
-#[test]
-fn read_ftyp() {
-    let mut stream = make_box(BoxSize::Short(24), b"ftyp", |s| {
-        s.append_bytes(b"mp42")
-         .B32(0) // minor version
-         .append_bytes(b"isom")
-         .append_bytes(b"mp42")
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::FileTypeBox);
-    assert_eq!(stream.head.size, 24);
-    let parsed = super::read_ftyp(&mut stream).unwrap();
-    assert_eq!(parsed.major_brand, 0x6d703432); // mp42
-    assert_eq!(parsed.minor_version, 0);
-    assert_eq!(parsed.compatible_brands.len(), 2);
-    assert_eq!(parsed.compatible_brands[0], 0x69736f6d); // isom
-    assert_eq!(parsed.compatible_brands[1], 0x6d703432); // mp42
-}
-
-#[test]
-fn read_truncated_ftyp() {
-    // We declare a 24 byte box, but only write 20 bytes.
-    let mut stream = make_box(BoxSize::UncheckedShort(24), b"ftyp", |s| {
-        s.append_bytes(b"mp42")
-            .B32(0) // minor version
-            .append_bytes(b"isom")
-    });
-    let mut context = MediaContext::new();
-    match read_mp4(&mut stream, &mut context) {
-        Err(Error::UnexpectedEOF) => (),
-        Ok(_) => assert!(false, "expected an error result"),
-        _ => assert!(false, "expected a different error result"),
-    }
-}
-
-#[test]
-fn read_ftyp_case() {
-    // Brands in BMFF are represented as a u32, so it would seem clear that
-    // 0x6d703432 ("mp42") is not equal to 0x4d503432 ("MP42"), but some
-    // demuxers treat these as case-insensitive strings, e.g. street.mp4's
-    // major brand is "MP42".  I haven't seen case-insensitive
-    // compatible_brands (which we also test here), but it doesn't seem
-    // unlikely given the major_brand behaviour.
-    let mut stream = make_box(BoxSize::Auto, b"ftyp", |s| {
-        s.append_bytes(b"MP42")
-         .B32(0) // minor version
-         .append_bytes(b"ISOM")
-         .append_bytes(b"MP42")
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::FileTypeBox);
-    assert_eq!(stream.head.size, 24);
-    let parsed = super::read_ftyp(&mut stream).unwrap();
-    assert_eq!(parsed.major_brand, 0x4d503432);
-    assert_eq!(parsed.minor_version, 0);
-    assert_eq!(parsed.compatible_brands.len(), 2);
-    assert_eq!(parsed.compatible_brands[0], 0x49534f4d); // ISOM
-    assert_eq!(parsed.compatible_brands[1], 0x4d503432); // MP42
-}
-
-#[test]
-fn read_elst_v0() {
-    let mut stream = make_fullbox(BoxSize::Short(28), b"elst", 0, |s| {
-        s.B32(1) // list count
-          // first entry
-         .B32(1234) // duration
-         .B32(5678) // time
-         .B16(12) // rate integer
-         .B16(34) // rate fraction
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::EditListBox);
-    assert_eq!(stream.head.size, 28);
-    let parsed = super::read_elst(&mut stream).unwrap();
-    assert_eq!(parsed.edits.len(), 1);
-    assert_eq!(parsed.edits[0].segment_duration, 1234);
-    assert_eq!(parsed.edits[0].media_time, 5678);
-    assert_eq!(parsed.edits[0].media_rate_integer, 12);
-    assert_eq!(parsed.edits[0].media_rate_fraction, 34);
-}
-
-#[test]
-fn read_elst_v1() {
-    let mut stream = make_fullbox(BoxSize::Short(56), b"elst", 1, |s| {
-        s.B32(2) // list count
-         // first entry
-         .B64(1234) // duration
-         .B64(5678) // time
-         .B16(12) // rate integer
-         .B16(34) // rate fraction
-         // second entry
-         .B64(1234) // duration
-         .B64(5678) // time
-         .B16(12) // rate integer
-         .B16(34) // rate fraction
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::EditListBox);
-    assert_eq!(stream.head.size, 56);
-    let parsed = super::read_elst(&mut stream).unwrap();
-    assert_eq!(parsed.edits.len(), 2);
-    assert_eq!(parsed.edits[1].segment_duration, 1234);
-    assert_eq!(parsed.edits[1].media_time, 5678);
-    assert_eq!(parsed.edits[1].media_rate_integer, 12);
-    assert_eq!(parsed.edits[1].media_rate_fraction, 34);
-}
-
-#[test]
-fn read_mdhd_v0() {
-    let mut stream = make_fullbox(BoxSize::Short(32), b"mdhd", 0, |s| {
-        s.B32(0)
-         .B32(0)
-         .B32(1234) // timescale
-         .B32(5678) // duration
-         .B32(0)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MediaHeaderBox);
-    assert_eq!(stream.head.size, 32);
-    let parsed = super::read_mdhd(&mut stream).unwrap();
-    assert_eq!(parsed.timescale, 1234);
-    assert_eq!(parsed.duration, 5678);
-}
-
-#[test]
-fn read_mdhd_v1() {
-    let mut stream = make_fullbox(BoxSize::Short(44), b"mdhd", 1, |s| {
-        s.B64(0)
-         .B64(0)
-         .B32(1234) // timescale
-         .B64(5678) // duration
-         .B32(0)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MediaHeaderBox);
-    assert_eq!(stream.head.size, 44);
-    let parsed = super::read_mdhd(&mut stream).unwrap();
-    assert_eq!(parsed.timescale, 1234);
-    assert_eq!(parsed.duration, 5678);
-}
-
-#[test]
-fn read_mdhd_unknown_duration() {
-    let mut stream = make_fullbox(BoxSize::Short(32), b"mdhd", 0, |s| {
-        s.B32(0)
-         .B32(0)
-         .B32(1234) // timescale
-         .B32(::std::u32::MAX) // duration
-         .B32(0)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MediaHeaderBox);
-    assert_eq!(stream.head.size, 32);
-    let parsed = super::read_mdhd(&mut stream).unwrap();
-    assert_eq!(parsed.timescale, 1234);
-    assert_eq!(parsed.duration, ::std::u64::MAX);
-}
-
-#[test]
-fn read_mdhd_invalid_timescale() {
-    let mut stream = make_fullbox(BoxSize::Short(44), b"mdhd", 1, |s| {
-        s.B64(0)
-         .B64(0)
-         .B32(0) // timescale
-         .B64(5678) // duration
-         .B32(0)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MediaHeaderBox);
-    assert_eq!(stream.head.size, 44);
-    let r = super::parse_mdhd(&mut stream, &mut super::Track::new(0));
-    assert_eq!(r.is_err(), true);
-}
-
-#[test]
-fn read_mvhd_v0() {
-    let mut stream = make_fullbox(BoxSize::Short(108), b"mvhd", 0, |s| {
-        s.B32(0)
-         .B32(0)
-         .B32(1234)
-         .B32(5678)
-         .append_repeated(0, 80)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MovieHeaderBox);
-    assert_eq!(stream.head.size, 108);
-    let parsed = super::read_mvhd(&mut stream).unwrap();
-    assert_eq!(parsed.timescale, 1234);
-    assert_eq!(parsed.duration, 5678);
-}
-
-#[test]
-fn read_mvhd_v1() {
-    let mut stream = make_fullbox(BoxSize::Short(120), b"mvhd", 1, |s| {
-        s.B64(0)
-         .B64(0)
-         .B32(1234)
-         .B64(5678)
-         .append_repeated(0, 80)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MovieHeaderBox);
-    assert_eq!(stream.head.size, 120);
-    let parsed = super::read_mvhd(&mut stream).unwrap();
-    assert_eq!(parsed.timescale, 1234);
-    assert_eq!(parsed.duration, 5678);
-}
-
-#[test]
-fn read_mvhd_invalid_timescale() {
-    let mut stream = make_fullbox(BoxSize::Short(120), b"mvhd", 1, |s| {
-        s.B64(0)
-         .B64(0)
-         .B32(0)
-         .B64(5678)
-         .append_repeated(0, 80)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MovieHeaderBox);
-    assert_eq!(stream.head.size, 120);
-    let r = super::parse_mvhd(&mut stream);
-    assert_eq!(r.is_err(), true);
-}
-
-#[test]
-fn read_mvhd_unknown_duration() {
-    let mut stream = make_fullbox(BoxSize::Short(108), b"mvhd", 0, |s| {
-        s.B32(0)
-         .B32(0)
-         .B32(1234)
-         .B32(::std::u32::MAX)
-         .append_repeated(0, 80)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::MovieHeaderBox);
-    assert_eq!(stream.head.size, 108);
-    let parsed = super::read_mvhd(&mut stream).unwrap();
-    assert_eq!(parsed.timescale, 1234);
-    assert_eq!(parsed.duration, ::std::u64::MAX);
-}
-
-#[test]
-fn read_vpcc() {
-    let data_length = 12u16;
-    let mut stream = make_fullbox(BoxSize::Auto, b"vpcC", 0, |s| {
-        s.B8(2)
-         .B8(0)
-         .B8(0x82)
-         .B8(0)
-         .B16(data_length)
-         .append_repeated(42, data_length as usize)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::VPCodecConfigurationBox);
-    let r = super::read_vpcc(&mut stream);
-    assert!(r.is_ok());
-}
-
-#[test]
-fn read_hdlr() {
-    let mut stream = make_fullbox(BoxSize::Short(45), b"hdlr", 0, |s| {
-        s.B32(0)
-         .append_bytes(b"vide")
-         .B32(0)
-         .B32(0)
-         .B32(0)
-         .append_bytes(b"VideoHandler")
-         .B8(0) // null-terminate string
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::HandlerBox);
-    assert_eq!(stream.head.size, 45);
-    let parsed = super::read_hdlr(&mut stream).unwrap();
-    assert_eq!(parsed.handler_type, 0x76696465); // vide
-}
-
-#[test]
-fn read_hdlr_short_name() {
-    let mut stream = make_fullbox(BoxSize::Short(33), b"hdlr", 0, |s| {
-        s.B32(0)
-         .append_bytes(b"vide")
-         .B32(0)
-         .B32(0)
-         .B32(0)
-         .B8(0) // null-terminate string
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::HandlerBox);
-    assert_eq!(stream.head.size, 33);
-    let parsed = super::read_hdlr(&mut stream).unwrap();
-    assert_eq!(parsed.handler_type, 0x76696465); // vide
-}
-
-#[test]
-fn read_hdlr_zero_length_name() {
-    let mut stream = make_fullbox(BoxSize::Short(32), b"hdlr", 0, |s| {
-        s.B32(0)
-         .append_bytes(b"vide")
-         .B32(0)
-         .B32(0)
-         .B32(0)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::HandlerBox);
-    assert_eq!(stream.head.size, 32);
-    let parsed = super::read_hdlr(&mut stream).unwrap();
-    assert_eq!(parsed.handler_type, 0x76696465); // vide
-}
-
-fn flac_streaminfo() -> Vec<u8> {
-    vec![
-        0x10, 0x00, 0x10, 0x00, 0x00, 0x0a, 0x11, 0x00,
-        0x38, 0x32, 0x0a, 0xc4, 0x42, 0xf0, 0x00, 0xc9,
-        0xdf, 0xae, 0xb5, 0x66, 0xfc, 0x02, 0x15, 0xa3,
-        0xb1, 0x54, 0x61, 0x47, 0x0f, 0xfb, 0x05, 0x00,
-        0x33, 0xad,
-    ]
-}
-
-#[test]
-fn read_flac() {
-    let mut stream = make_box(BoxSize::Auto, b"fLaC", |s| {
-        s.append_repeated(0, 6) // reserved
-         .B16(1) // data reference index
-         .B32(0) // reserved
-         .B32(0) // reserved
-         .B16(2) // channel count
-         .B16(16) // bits per sample
-         .B16(0) // pre_defined
-         .B16(0) // reserved
-         .B32(44100 << 16) // Sample rate
-         .append_bytes(&make_dfla(FlacBlockType::StreamInfo, true,
-                                  &flac_streaminfo(), FlacBlockLength::Correct)
-         .into_inner())
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    let mut track = super::Track::new(0);
-    let r = super::read_audio_sample_entry(&mut stream, &mut track);
-    r.unwrap();
-}
-
-#[derive(Clone, Copy)]
-enum FlacBlockType {
-    StreamInfo = 0,
-    _Padding = 1,
-    _Application = 2,
-    _Seektable = 3,
-    _Comment = 4,
-    _Cuesheet = 5,
-    _Picture = 6,
-    _Reserved,
-    _Invalid = 127,
-}
-
-enum FlacBlockLength {
-    Correct,
-    Incorrect(usize),
-}
-
-fn make_dfla(block_type: FlacBlockType, last: bool, data: &Vec<u8>,
-             data_length: FlacBlockLength) -> Cursor<Vec<u8>> {
-    assert!(data.len() < 1<<24);
-    make_fullbox(BoxSize::Auto, b"dfLa", 0, |s| {
-        let flag = match last {
-            true => 1,
-            false => 0,
-        };
-        let size = match data_length {
-            FlacBlockLength::Correct => (data.len() as u32) & 0xffffff,
-            FlacBlockLength::Incorrect(size) => {
-                assert!(size < 1<<24);
-                (size as u32) & 0xffffff
-            }
-        };
-        let block_type = (block_type as u32) & 0x7f;
-        s.B32(flag << 31 | block_type << 24 | size)
-         .append_bytes(data)
-    })
-}
-
-#[test]
-fn read_dfla() {
-    let mut stream = make_dfla(FlacBlockType::StreamInfo, true,
-                               &flac_streaminfo(), FlacBlockLength::Correct);
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::FLACSpecificBox);
-    let dfla = super::read_dfla(&mut stream).unwrap();
-    assert_eq!(dfla.version, 0);
-}
-
-#[test]
-fn long_flac_metadata() {
-    let streaminfo = flac_streaminfo();
-    let mut stream = make_dfla(FlacBlockType::StreamInfo, true,
-                               &streaminfo,
-                               FlacBlockLength::Incorrect(streaminfo.len() + 4));
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::FLACSpecificBox);
-    let r = super::read_dfla(&mut stream);
-    assert!(r.is_err());
-}
-
-#[test]
-fn read_opus() {
-    let mut stream = make_box(BoxSize::Auto, b"Opus", |s| {
-        s.append_repeated(0, 6)
-         .B16(1) // data reference index
-         .B32(0)
-         .B32(0)
-         .B16(2) // channel count
-         .B16(16) // bits per sample
-         .B16(0)
-         .B16(0)
-         .B32(48000 << 16) // Sample rate is always 48 kHz for Opus.
-         .append_bytes(&make_dops().into_inner())
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    let mut track = super::Track::new(0);
-    let r = super::read_audio_sample_entry(&mut stream, &mut track);
-    assert!(r.is_ok());
-}
-
-fn make_dops() -> Cursor<Vec<u8>> {
-    make_box(BoxSize::Auto, b"dOps", |s| {
-        s.B8(0) // version
-         .B8(2) // channel count
-         .B16(348) // pre-skip
-         .B32(44100) // original sample rate
-         .B16(0) // gain
-         .B8(0) // channel mapping
-    })
-}
-
-#[test]
-fn read_dops() {
-    let mut stream = make_dops();
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    assert_eq!(stream.head.name, BoxType::OpusSpecificBox);
-    let r = super::read_dops(&mut stream);
-    assert!(r.is_ok());
-}
-
-#[test]
-fn serialize_opus_header() {
-    let opus = super::OpusSpecificBox {
-        version: 0,
-        output_channel_count: 1,
-        pre_skip: 342,
-        input_sample_rate: 24000,
-        output_gain: 0,
-        channel_mapping_family: 0,
-        channel_mapping_table: None,
-    };
-    let mut v = Vec::<u8>::new();
-    super::serialize_opus_header(&opus, &mut v).unwrap();
-    assert!(v.len() == 19);
-    assert!(v == vec![
-            0x4f, 0x70, 0x75, 0x73, 0x48,0x65, 0x61, 0x64,
-            0x01, 0x01, 0x56, 0x01,
-            0xc0, 0x5d, 0x00, 0x00,
-            0x00, 0x00, 0x00,
-    ]);
-    let opus = super::OpusSpecificBox {
-        version: 0,
-        output_channel_count: 6,
-        pre_skip: 152,
-        input_sample_rate: 48000,
-        output_gain: 0,
-        channel_mapping_family: 1,
-        channel_mapping_table: Some(super::ChannelMappingTable {
-            stream_count: 4,
-            coupled_count: 2,
-            channel_mapping: vec![0, 4, 1, 2, 3, 5],
-        }),
-    };
-    let mut v = Vec::<u8>::new();
-    super::serialize_opus_header(&opus, &mut v).unwrap();
-    assert!(v.len() == 27);
-    assert!(v == vec![
-            0x4f, 0x70, 0x75, 0x73, 0x48,0x65, 0x61, 0x64,
-            0x01, 0x06, 0x98, 0x00,
-            0x80, 0xbb, 0x00, 0x00,
-            0x00, 0x00, 0x01, 0x04, 0x02,
-            0x00, 0x04, 0x01, 0x02, 0x03, 0x05,
-    ]);
-}
-
-#[test]
-fn avcc_limit() {
-    let mut stream = make_box(BoxSize::Auto, b"avc1", |s| {
-        s.append_repeated(0, 6)
-         .B16(1)
-         .append_repeated(0, 16)
-         .B16(320)
-         .B16(240)
-         .append_repeated(0, 14)
-         .append_repeated(0, 32)
-         .append_repeated(0, 4)
-         .B32(0xffffffff)
-         .append_bytes(b"avcC")
-         .append_repeated(0, 100)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    let mut track = super::Track::new(0);
-    match super::read_video_sample_entry(&mut stream, &mut track) {
-        Err(Error::InvalidData(s)) => assert_eq!(s, "avcC box exceeds BUF_SIZE_LIMIT"),
-        Ok(_) => assert!(false, "expected an error result"),
-        _ => assert!(false, "expected a different error result"),
-    }
-}
-
-#[test]
-fn esds_limit() {
-    let mut stream = make_box(BoxSize::Auto, b"mp4a", |s| {
-        s.append_repeated(0, 6)
-         .B16(1)
-         .B32(0)
-         .B32(0)
-         .B16(2)
-         .B16(16)
-         .B16(0)
-         .B16(0)
-         .B32(48000 << 16)
-         .B32(0xffffffff)
-         .append_bytes(b"esds")
-         .append_repeated(0, 100)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    let mut track = super::Track::new(0);
-    match super::read_audio_sample_entry(&mut stream, &mut track) {
-        Err(Error::InvalidData(s)) => assert_eq!(s, "esds box exceeds BUF_SIZE_LIMIT"),
-        Ok(_) => assert!(false, "expected an error result"),
-        _ => assert!(false, "expected a different error result"),
-    }
-}
-
-#[test]
-fn esds_limit_2() {
-    let mut stream = make_box(BoxSize::Auto, b"mp4a", |s| {
-        s.append_repeated(0, 6)
-         .B16(1)
-         .B32(0)
-         .B32(0)
-         .B16(2)
-         .B16(16)
-         .B16(0)
-         .B16(0)
-         .B32(48000 << 16)
-         .B32(8)
-         .append_bytes(b"esds")
-         .append_repeated(0, 4)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    let mut track = super::Track::new(0);
-    match super::read_audio_sample_entry(&mut stream, &mut track) {
-        Err(Error::UnexpectedEOF) => (),
-        Ok(_) => assert!(false, "expected an error result"),
-        _ => assert!(false, "expected a different error result"),
-    }
-}
-
-#[test]
-fn read_elst_zero_entries() {
-    let mut stream = make_fullbox(BoxSize::Auto, b"elst", 0, |s| {
-        s.B32(0)
-         .B16(12)
-         .B16(34)
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    match super::read_elst(&mut stream) {
-        Err(Error::InvalidData(s)) => assert_eq!(s, "invalid edit count"),
-        Ok(_) => assert!(false, "expected an error result"),
-        _ => assert!(false, "expected a different error result"),
-    }
-}
-
-fn make_elst() -> Cursor<Vec<u8>> {
-    make_fullbox(BoxSize::Auto, b"elst", 1, |s| {
-        s.B32(1)
-        // first entry
-         .B64(1234) // duration
-         .B64(0xffffffffffffffff) // time
-         .B16(12) // rate integer
-         .B16(34) // rate fraction
-    })
-}
-
-#[test]
-fn read_edts_bogus() {
-    // First edit list entry has a media_time of -1, so we expect a second
-    // edit list entry to be present to provide a valid media_time.
-    let mut stream = make_box(BoxSize::Auto, b"edts", |s| {
-        s.append_bytes(&make_elst().into_inner())
-    });
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    let mut track = super::Track::new(0);
-    match super::read_edts(&mut stream, &mut track) {
-        Err(Error::InvalidData(s)) => assert_eq!(s, "expected additional edit"),
-        Ok(_) => assert!(false, "expected an error result"),
-        _ => assert!(false, "expected a different error result"),
-    }
-}
-
-#[test]
-fn invalid_pascal_string() {
-    // String claims to be 32 bytes long (we provide 33 bytes to account for
-    // the 1 byte length prefix).
-    let pstr = "\x20xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
-    let mut stream = Cursor::new(pstr);
-    // Reader wants to limit the total read length to 32 bytes, so any
-    // returned string must be no longer than 31 bytes.
-    let s = super::read_fixed_length_pascal_string(&mut stream, 32).unwrap();
-    assert_eq!(s.len(), 31);
-}
-
-#[test]
-fn skip_padding_in_boxes() {
-    // Padding data could be added in the end of these boxes. Parser needs to skip
-    // them instead of returning error.
-    let box_names = vec![b"stts", b"stsc", b"stsz", b"stco", b"co64", b"stss"];
-
-    for name in box_names {
-        let mut stream = make_fullbox(BoxSize::Auto, name, 1, |s| {
-            s.append_repeated(0, 100) // add padding data
-        });
-        let mut iter = super::BoxIter::new(&mut stream);
-        let mut stream = iter.next_box().unwrap().unwrap();
-        match name {
-            b"stts" => {
-                super::read_stts(&mut stream).expect("fail to skip padding: stts");
-            },
-            b"stsc" => {
-                super::read_stsc(&mut stream).expect("fail to skip padding: stsc");
-            },
-            b"stsz" => {
-                super::read_stsz(&mut stream).expect("fail to skip padding: stsz");
-            },
-            b"stco" => {
-                super::read_stco(&mut stream).expect("fail to skip padding: stco");
-            },
-            b"co64" => {
-                super::read_co64(&mut stream).expect("fail to skip padding: co64");
-            },
-            b"stss" => {
-                super::read_stss(&mut stream).expect("fail to skip padding: stss");
-            },
-            _ => (),
-        }
-    }
-}
-
-#[test]
-fn skip_padding_in_stsd() {
-    // Padding data could be added in the end of stsd boxes. Parser needs to skip
-    // them instead of returning error.
-    let avc = make_box(BoxSize::Auto, b"avc1", |s| {
-        s.append_repeated(0, 6)
-         .B16(1)
-         .append_repeated(0, 16)
-         .B16(320)
-         .B16(240)
-         .append_repeated(0, 14)
-         .append_repeated(0, 32)
-         .append_repeated(0, 4)
-         .B32(0xffffffff)
-         .append_bytes(b"avcC")
-         .append_repeated(0, 100)
-    }).into_inner();
-    let mut stream = make_fullbox(BoxSize::Auto, b"stsd", 0, |s| {
-        s.B32(1)
-         .append_bytes(avc.as_slice())
-         .append_repeated(0, 100) // add padding data
-    });
-
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    super::read_stsd(&mut stream, &mut super::Track::new(0))
-          .expect("fail to skip padding: stsd");
-}
-
-#[test]
-fn read_qt_wave_atom() {
-    let esds = make_fullbox(BoxSize::Auto, b"esds", 0, |s| {
-        s.B8(0x03)  // elementary stream descriptor tag
-         .B8(0x0b)  // esds length
-         .append_repeated(0, 2)
-         .B8(0x00)  // flags
-         .B8(0x04)  // decoder config descriptor tag
-         .B8(0x0d)  // dcds length
-         .B8(0x6b)  // mp3
-         .append_repeated(0, 12)
-    }).into_inner();
-    let wave = make_box(BoxSize::Auto, b"wave", |s| {
-        s.append_bytes(esds.as_slice())
-    }).into_inner();
-    let mut stream = make_box(BoxSize::Auto, b"mp4a", |s| {
-        s.append_repeated(0, 6)
-         .B16(1)    // data_reference_count
-         .B16(1)    // verion: qt -> 1
-         .append_repeated(0, 6)
-         .B16(2)
-         .B16(16)
-         .append_repeated(0, 4)
-         .B32(48000 << 16)
-         .append_repeated(0, 16)
-         .append_bytes(wave.as_slice())
-    });
-
-    let mut iter = super::BoxIter::new(&mut stream);
-    let mut stream = iter.next_box().unwrap().unwrap();
-    let mut track = super::Track::new(0);
-    super::read_audio_sample_entry(&mut stream, &mut track)
-          .expect("fail to read qt wave atom");
-    assert_eq!(track.codec_type, super::CodecType::MP3);
-}
diff --git a/media/libstagefright/binding/mp4parse/tests/afl.rs b/media/libstagefright/binding/mp4parse/tests/afl.rs
deleted file mode 100644
index d4ffec0df9..0000000000
--- a/media/libstagefright/binding/mp4parse/tests/afl.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-/// Regression tests from American Fuzzy Lop test cases.
-
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-/// These all caused panics at some point during development.
-
-extern crate mp4parse;
-
-use std::io::Cursor;
-
-/// https://github.com/mozilla/mp4parse-rust/issues/2
-///
-/// Test a box with 4-byte size, smaller than the smallest header.
-#[test]
-fn fuzz_2() {
-    let mut c = Cursor::new(b"\x00\x00\x00\x04\xa6\x00\x04\xa6".to_vec());
-    let mut context = mp4parse::MediaContext::new();
-    let _ = mp4parse::read_mp4(&mut c, &mut context);
-}
-
-/// https://github.com/mozilla/mp4parse-rust/issues/4
-///
-/// Test a large (64 bit) box header with zero declared size.
-#[test]
-fn fuzz_4() {
-    let mut c = Cursor::new(b"\x00\x00\x00\x01\x30\x30\x30\x30\x00\x00\x00\x00\x00\x00\x00\x00".to_vec());
-    let mut context = mp4parse::MediaContext::new();
-    let _ = mp4parse::read_mp4(&mut c, &mut context);
-}
-
-/// https://github.com/mozilla/mp4parse-rust/issues/5
-///
-/// Declares 202116104 compatible brands but does not supply them,
-/// verifying read is properly bounded at the end of the stream.
-#[test]
-fn fuzz_5() {
-    let mut c = Cursor::new(b"\x30\x30\x30\x30\x66\x74\x79\x70\x30\x30\x30\x30\x30\x30\x30\x30".to_vec());
-    let mut context = mp4parse::MediaContext::new();
-    let _ = mp4parse::read_mp4(&mut c, &mut context);
-}
-
-/// https://github.com/mozilla/mp4parse-rust/issues/6
-///
-/// Declares an ftyp box with a single invalid (short - 3 byte) compatible
-/// brand and excludes the extra 3 bytes from the stream.
-#[test]
-fn fuzz_6() {
-    let mut c = Cursor::new(b"\x00\x00\x00\x13\x66\x74\x79\x70\x30\x30\x30\x30\x30\x30\x30\x30".to_vec());
-    let mut context = mp4parse::MediaContext::new();
-    let _ = mp4parse::read_mp4(&mut c, &mut context);
-}
diff --git a/media/libstagefright/binding/mp4parse/tests/minimal.mp4 b/media/libstagefright/binding/mp4parse/tests/minimal.mp4
deleted file mode 100644
index 9fe1e67224..0000000000
--- a/media/libstagefright/binding/mp4parse/tests/minimal.mp4
+++ /dev/null
diff --git a/media/libstagefright/binding/mp4parse/tests/public.rs b/media/libstagefright/binding/mp4parse/tests/public.rs
deleted file mode 100644
index 1d36f5f5ac..0000000000
--- a/media/libstagefright/binding/mp4parse/tests/public.rs
+++ /dev/null
@@ -1,97 +0,0 @@
-/// Check if needed fields are still public.
-
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-extern crate mp4parse as mp4;
-
-use std::io::{Cursor, Read};
-use std::fs::File;
-
-// Taken from https://github.com/GuillaumeGomez/audio-video-metadata/blob/9dff40f565af71d5502e03a2e78ae63df95cfd40/src/metadata.rs#L53
-#[test]
-fn public_api() {
-    let mut fd = File::open("tests/minimal.mp4").expect("Unknown file");
-    let mut buf = Vec::new();
-    fd.read_to_end(&mut buf).expect("File error");
-
-    let mut c = Cursor::new(&buf);
-    let mut context = mp4::MediaContext::new();
-    mp4::read_mp4(&mut c, &mut context).expect("read_mp4 failed");
-    assert_eq!(context.timescale, Some(mp4::MediaTimeScale(1000)));
-    for track in context.tracks {
-        match track.data {
-            Some(mp4::SampleEntry::Video(v)) => {
-                // track part
-                assert_eq!(track.duration, Some(mp4::TrackScaledTime(512, 0)));
-                assert_eq!(track.empty_duration, Some(mp4::MediaScaledTime(0)));
-                assert_eq!(track.media_time, Some(mp4::TrackScaledTime(0, 0)));
-                assert_eq!(track.timescale, Some(mp4::TrackTimeScale(12800, 0)));
-                assert_eq!(v.width, 320);
-                assert_eq!(v.height, 240);
-
-                // track.tkhd part
-                let tkhd = track.tkhd.unwrap();
-                assert_eq!(tkhd.disabled, false);
-                assert_eq!(tkhd.duration, 40);
-                assert_eq!(tkhd.width, 20971520);
-                assert_eq!(tkhd.height, 15728640);
-
-                // track.data part
-                assert_eq!(match v.codec_specific {
-                    mp4::VideoCodecSpecific::AVCConfig(v) => {
-                        assert!(v.len() > 0);
-                        "AVC"
-                    }
-                    mp4::VideoCodecSpecific::VPxConfig(vpx) => {
-                        // We don't enter in here, we just check if fields are public.
-                        assert!(vpx.bit_depth > 0);
-                        assert!(vpx.color_space > 0);
-                        assert!(vpx.chroma_subsampling > 0);
-                        assert!(vpx.codec_init.len() > 0);
-                        "VPx"
-                    }
-                }, "AVC");
-            }
-            Some(mp4::SampleEntry::Audio(a)) => {
-                // track part
-                assert_eq!(track.duration, Some(mp4::TrackScaledTime(2944, 1)));
-                assert_eq!(track.empty_duration, Some(mp4::MediaScaledTime(0)));
-                assert_eq!(track.media_time, Some(mp4::TrackScaledTime(1024, 1)));
-                assert_eq!(track.timescale, Some(mp4::TrackTimeScale(48000, 1)));
-
-                // track.tkhd part
-                let tkhd = track.tkhd.unwrap();
-                assert_eq!(tkhd.disabled, false);
-                assert_eq!(tkhd.duration, 62);
-                assert_eq!(tkhd.width, 0);
-                assert_eq!(tkhd.height, 0);
-
-                // track.data part
-                assert_eq!(match a.codec_specific {
-                    mp4::AudioCodecSpecific::ES_Descriptor(esds) => {
-                        assert_eq!(esds.audio_codec, mp4::CodecType::AAC);
-                        assert_eq!(esds.audio_sample_rate.unwrap(), 48000);
-                        "ES"
-                    }
-                    mp4::AudioCodecSpecific::FLACSpecificBox(flac) => {
-                        // STREAMINFO block must be present and first.
-                        assert!(flac.blocks.len() > 0);
-                        assert!(flac.blocks[0].block_type == 0);
-                        assert!(flac.blocks[0].data.len() == 34);
-                        "FLAC"
-                    }
-                    mp4::AudioCodecSpecific::OpusSpecificBox(opus) => {
-                        // We don't enter in here, we just check if fields are public.
-                        assert!(opus.version > 0);
-                        "Opus"
-                    }
-                }, "ES");
-                assert!(a.samplesize > 0);
-                assert!(a.samplerate > 0);
-            }
-            Some(mp4::SampleEntry::Unknown) | None => {}
-        }
-    }
-}
diff --git a/media/libstagefright/binding/mp4parse_capi/Cargo.toml b/media/libstagefright/binding/mp4parse_capi/Cargo.toml
deleted file mode 100644
index 5c0836abe3..0000000000
--- a/media/libstagefright/binding/mp4parse_capi/Cargo.toml
+++ /dev/null
@@ -1,26 +0,0 @@
-[package]
-name = "mp4parse_capi"
-version = "0.6.0"
-authors = [
-  "Ralph Giles <giles@mozilla.com>",
-  "Matthew Gregan <kinetik@flim.org>",
-  "Alfredo Yang <ayang@mozilla.com>",
-]
-
-description = "Parser for ISO base media file format (mp4)"
-documentation = "https://mp4parse-docs.surge.sh/mp4parse/"
-license = "MPL-2.0"
-
-repository = "https://github.com/mozilla/mp4parse-rust"
-
-# Avoid complaints about trying to package test files.
-exclude = [
-  "*.mp4",
-]
-
-[dependencies]
-"mp4parse" = {version = "0.6.0", path = "../mp4parse"}
-
-# Somewhat heavy-handed, but we want at least -Z force-overflow-checks=on.
-[profile.release]
-debug-assertions = true
diff --git a/media/libstagefright/binding/mp4parse_capi/build.rs b/media/libstagefright/binding/mp4parse_capi/build.rs
deleted file mode 100644
index 29f2a85ced..0000000000
--- a/media/libstagefright/binding/mp4parse_capi/build.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-extern crate cheddar;
-
-fn main() {
-    println!("cargo:rerun-if-changed=src/lib.rs");
-    // Generate mp4parse.h.
-    cheddar::Cheddar::new().expect("could not read manifest")
-        .insert_code("// THIS FILE IS AUTOGENERATED BY mp4parse-rust/build.rs - DO NOT EDIT\n\n")
-        .insert_code("// This Source Code Form is subject to the terms of the Mozilla Public\n")
-        .insert_code("// License, v. 2.0. If a copy of the MPL was not distributed with this\n")
-        .insert_code("// file, You can obtain one at https://mozilla.org/MPL/2.0/.")
-        .run_build("include/mp4parse.h");
-}
diff --git a/media/libstagefright/binding/mp4parse_capi/src/lib.rs b/media/libstagefright/binding/mp4parse_capi/src/lib.rs
deleted file mode 100644
index f52d8b1690..0000000000
--- a/media/libstagefright/binding/mp4parse_capi/src/lib.rs
+++ /dev/null
@@ -1,870 +0,0 @@
-//! C API for mp4parse module.
-//!
-//! Parses ISO Base Media Format aka video/mp4 streams.
-//!
-//! # Examples
-//!
-//! ```rust
-//! extern crate mp4parse_capi;
-//! use std::io::Read;
-//!
-//! extern fn buf_read(buf: *mut u8, size: usize, userdata: *mut std::os::raw::c_void) -> isize {
-//!    let mut input: &mut std::fs::File = unsafe { &mut *(userdata as *mut _) };
-//!    let mut buf = unsafe { std::slice::from_raw_parts_mut(buf, size) };
-//!    match input.read(&mut buf) {
-//!        Ok(n) => n as isize,
-//!        Err(_) => -1,
-//!    }
-//! }
-//!
-//! let mut file = std::fs::File::open("../mp4parse/tests/minimal.mp4").unwrap();
-//! let io = mp4parse_capi::mp4parse_io {
-//!     read: buf_read,
-//!     userdata: &mut file as *mut _ as *mut std::os::raw::c_void
-//! };
-//! unsafe {
-//!     let parser = mp4parse_capi::mp4parse_new(&io);
-//!     let rv = mp4parse_capi::mp4parse_read(parser);
-//!     assert_eq!(rv, mp4parse_capi::mp4parse_error::MP4PARSE_OK);
-//!     mp4parse_capi::mp4parse_free(parser);
-//! }
-//! ```
-
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-extern crate mp4parse;
-
-use std::io::Read;
-use std::collections::HashMap;
-
-// Symbols we need from our rust api.
-use mp4parse::MediaContext;
-use mp4parse::TrackType;
-use mp4parse::read_mp4;
-use mp4parse::Error;
-use mp4parse::SampleEntry;
-use mp4parse::AudioCodecSpecific;
-use mp4parse::VideoCodecSpecific;
-use mp4parse::MediaTimeScale;
-use mp4parse::MediaScaledTime;
-use mp4parse::TrackTimeScale;
-use mp4parse::TrackScaledTime;
-use mp4parse::serialize_opus_header;
-use mp4parse::CodecType;
-
-// rusty-cheddar's C enum generation doesn't namespace enum members by
-// prefixing them, so we're forced to do it in our member names until
-// https://github.com/Sean1708/rusty-cheddar/pull/35 is fixed.  Importing
-// the members into the module namespace avoids doubling up on the
-// namespacing on the Rust side.
-use mp4parse_error::*;
-use mp4parse_track_type::*;
-
-#[repr(C)]
-#[derive(PartialEq, Debug)]
-pub enum mp4parse_error {
-    MP4PARSE_OK = 0,
-    MP4PARSE_ERROR_BADARG = 1,
-    MP4PARSE_ERROR_INVALID = 2,
-    MP4PARSE_ERROR_UNSUPPORTED = 3,
-    MP4PARSE_ERROR_EOF = 4,
-    MP4PARSE_ERROR_IO = 5,
-}
-
-#[repr(C)]
-#[derive(PartialEq, Debug)]
-pub enum mp4parse_track_type {
-    MP4PARSE_TRACK_TYPE_VIDEO = 0,
-    MP4PARSE_TRACK_TYPE_AUDIO = 1,
-}
-
-#[repr(C)]
-#[derive(PartialEq, Debug)]
-pub enum mp4parse_codec {
-    MP4PARSE_CODEC_UNKNOWN,
-    MP4PARSE_CODEC_AAC,
-    MP4PARSE_CODEC_FLAC,
-    MP4PARSE_CODEC_OPUS,
-    MP4PARSE_CODEC_AVC,
-    MP4PARSE_CODEC_VP9,
-    MP4PARSE_CODEC_MP3,
-}
-
-#[repr(C)]
-pub struct mp4parse_track_info {
-    pub track_type: mp4parse_track_type,
-    pub codec: mp4parse_codec,
-    pub track_id: u32,
-    pub duration: u64,
-    pub media_time: i64, // wants to be u64? understand how elst adjustment works
-    // TODO(kinetik): include crypto guff
-}
-
-#[repr(C)]
-pub struct mp4parse_codec_specific_config {
-    pub length: u32,
-    pub data: *const u8,
-}
-
-impl Default for mp4parse_codec_specific_config {
-    fn default() -> Self {
-        mp4parse_codec_specific_config {
-            length: 0,
-            data: std::ptr::null_mut(),
-        }
-    }
-}
-
-#[derive(Default)]
-#[repr(C)]
-pub struct mp4parse_track_audio_info {
-    pub channels: u16,
-    pub bit_depth: u16,
-    pub sample_rate: u32,
-    // TODO(kinetik):
-    // int32_t profile;
-    // int32_t extended_profile; // check types
-    codec_specific_config: mp4parse_codec_specific_config,
-}
-
-#[repr(C)]
-pub struct mp4parse_track_video_info {
-    pub display_width: u32,
-    pub display_height: u32,
-    pub image_width: u16,
-    pub image_height: u16,
-    // TODO(kinetik):
-    // extra_data
-    // codec_specific_config
-}
-
-#[repr(C)]
-pub struct mp4parse_fragment_info {
-    pub fragment_duration: u64,
-    // TODO:
-    // info in trex box.
-}
-
-// Even though mp4parse_parser is opaque to C, rusty-cheddar won't let us
-// use more than one member, so we introduce *another* wrapper.
-struct Wrap {
-    context: MediaContext,
-    io: mp4parse_io,
-    poisoned: bool,
-    opus_header: HashMap<u32, Vec<u8>>,
-}
-
-#[repr(C)]
-#[allow(non_camel_case_types)]
-pub struct mp4parse_parser(Wrap);
-
-impl mp4parse_parser {
-    fn context(&self) -> &MediaContext {
-        &self.0.context
-    }
-
-    fn context_mut(&mut self) -> &mut MediaContext {
-        &mut self.0.context
-    }
-
-    fn io_mut(&mut self) -> &mut mp4parse_io {
-        &mut self.0.io
-    }
-
-    fn poisoned(&self) -> bool {
-        self.0.poisoned
-    }
-
-    fn set_poisoned(&mut self, poisoned: bool) {
-        self.0.poisoned = poisoned;
-    }
-
-    fn opus_header_mut(&mut self) -> &mut HashMap<u32, Vec<u8>> {
-        &mut self.0.opus_header
-    }
-}
-
-#[repr(C)]
-#[derive(Clone)]
-pub struct mp4parse_io {
-    pub read: extern fn(buffer: *mut u8, size: usize, userdata: *mut std::os::raw::c_void) -> isize,
-    pub userdata: *mut std::os::raw::c_void,
-}
-
-impl Read for mp4parse_io {
-    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
-        if buf.len() > isize::max_value() as usize {
-            return Err(std::io::Error::new(std::io::ErrorKind::Other, "buf length overflow in mp4parse_io Read impl"));
-        }
-        let rv = (self.read)(buf.as_mut_ptr(), buf.len(), self.userdata);
-        if rv >= 0 {
-            Ok(rv as usize)
-        } else {
-            Err(std::io::Error::new(std::io::ErrorKind::Other, "I/O error in mp4parse_io Read impl"))
-        }
-    }
-}
-
-// C API wrapper functions.
-
-/// Allocate an `mp4parse_parser*` to read from the supplied `mp4parse_io`.
-#[no_mangle]
-pub unsafe extern fn mp4parse_new(io: *const mp4parse_io) -> *mut mp4parse_parser {
-    if io.is_null() || (*io).userdata.is_null() {
-        return std::ptr::null_mut();
-    }
-    // is_null() isn't available on a fn type because it can't be null (in
-    // Rust) by definition.  But since this value is coming from the C API,
-    // it *could* be null.  Ideally, we'd wrap it in an Option to represent
-    // reality, but this causes rusty-cheddar to emit the wrong type
-    // (https://github.com/Sean1708/rusty-cheddar/issues/30).
-    if ((*io).read as *mut std::os::raw::c_void).is_null() {
-        return std::ptr::null_mut();
-    }
-    let parser = Box::new(mp4parse_parser(Wrap {
-        context: MediaContext::new(),
-        io: (*io).clone(),
-        poisoned: false,
-        opus_header: HashMap::new(),
-    }));
-    Box::into_raw(parser)
-}
-
-/// Free an `mp4parse_parser*` allocated by `mp4parse_new()`.
-#[no_mangle]
-pub unsafe extern fn mp4parse_free(parser: *mut mp4parse_parser) {
-    assert!(!parser.is_null());
-    let _ = Box::from_raw(parser);
-}
-
-/// Run the `mp4parse_parser*` allocated by `mp4parse_new()` until EOF or error.
-#[no_mangle]
-pub unsafe extern fn mp4parse_read(parser: *mut mp4parse_parser) -> mp4parse_error {
-    // Validate arguments from C.
-    if parser.is_null() || (*parser).poisoned() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let mut context = (*parser).context_mut();
-    let mut io = (*parser).io_mut();
-
-    let r = read_mp4(io, context);
-    match r {
-        Ok(_) => MP4PARSE_OK,
-        Err(Error::NoMoov) | Err(Error::InvalidData(_)) => {
-            // Block further calls. We've probable lost sync.
-            (*parser).set_poisoned(true);
-            MP4PARSE_ERROR_INVALID
-        }
-        Err(Error::Unsupported(_)) => MP4PARSE_ERROR_UNSUPPORTED,
-        Err(Error::UnexpectedEOF) => MP4PARSE_ERROR_EOF,
-        Err(Error::Io(_)) => {
-            // Block further calls after a read failure.
-            // Getting std::io::ErrorKind::UnexpectedEof is normal
-            // but our From trait implementation should have converted
-            // those to our Error::UnexpectedEOF variant.
-            (*parser).set_poisoned(true);
-            MP4PARSE_ERROR_IO
-        }
-    }
-}
-
-/// Return the number of tracks parsed by previous `mp4parse_read()` call.
-#[no_mangle]
-pub unsafe extern fn mp4parse_get_track_count(parser: *const mp4parse_parser, count: *mut u32) -> mp4parse_error {
-    // Validate arguments from C.
-    if parser.is_null() || count.is_null() || (*parser).poisoned() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-    let context = (*parser).context();
-
-    // Make sure the track count fits in a u32.
-    if context.tracks.len() > u32::max_value() as usize {
-        return MP4PARSE_ERROR_INVALID;
-    }
-    *count = context.tracks.len() as u32;
-    MP4PARSE_OK
-}
-
-/// Calculate numerator * scale / denominator, if possible.
-///
-/// Applying the associativity of integer arithmetic, we divide first
-/// and add the remainder after multiplying each term separately
-/// to preserve precision while leaving more headroom. That is,
-/// (n * s) / d is split into floor(n / d) * s + (n % d) * s / d.
-///
-/// Return None on overflow or if the denominator is zero.
-fn rational_scale(numerator: u64, denominator: u64, scale: u64) -> Option<u64> {
-    if denominator == 0 {
-        return None;
-    }
-    let integer = numerator / denominator;
-    let remainder = numerator % denominator;
-    match integer.checked_mul(scale) {
-        Some(integer) => remainder.checked_mul(scale)
-            .and_then(|remainder| (remainder/denominator).checked_add(integer)),
-        None => None,
-    }
-}
-
-fn media_time_to_us(time: MediaScaledTime, scale: MediaTimeScale) -> Option<u64> {
-    let microseconds_per_second = 1000000;
-    rational_scale(time.0, scale.0, microseconds_per_second)
-}
-
-fn track_time_to_us(time: TrackScaledTime, scale: TrackTimeScale) -> Option<u64> {
-    assert!(time.1 == scale.1);
-    let microseconds_per_second = 1000000;
-    rational_scale(time.0, scale.0, microseconds_per_second)
-}
-
-/// Fill the supplied `mp4parse_track_info` with metadata for `track`.
-#[no_mangle]
-pub unsafe extern fn mp4parse_get_track_info(parser: *mut mp4parse_parser, track_index: u32, info: *mut mp4parse_track_info) -> mp4parse_error {
-    if parser.is_null() || info.is_null() || (*parser).poisoned() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let context = (*parser).context_mut();
-    let track_index: usize = track_index as usize;
-    let info: &mut mp4parse_track_info = &mut *info;
-
-    if track_index >= context.tracks.len() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    info.track_type = match context.tracks[track_index].track_type {
-        TrackType::Video => MP4PARSE_TRACK_TYPE_VIDEO,
-        TrackType::Audio => MP4PARSE_TRACK_TYPE_AUDIO,
-        TrackType::Unknown => return MP4PARSE_ERROR_UNSUPPORTED,
-    };
-
-    info.codec = match context.tracks[track_index].data {
-        Some(SampleEntry::Audio(ref audio)) => match audio.codec_specific {
-            AudioCodecSpecific::OpusSpecificBox(_) =>
-                mp4parse_codec::MP4PARSE_CODEC_OPUS,
-            AudioCodecSpecific::FLACSpecificBox(_) =>
-                mp4parse_codec::MP4PARSE_CODEC_FLAC,
-            AudioCodecSpecific::ES_Descriptor(ref esds) if esds.audio_codec == CodecType::AAC =>
-                mp4parse_codec::MP4PARSE_CODEC_AAC,
-            AudioCodecSpecific::ES_Descriptor(ref esds) if esds.audio_codec == CodecType::MP3 =>
-                mp4parse_codec::MP4PARSE_CODEC_MP3,
-            AudioCodecSpecific::ES_Descriptor(_) =>
-                mp4parse_codec::MP4PARSE_CODEC_UNKNOWN,
-        },
-        Some(SampleEntry::Video(ref video)) => match video.codec_specific {
-            VideoCodecSpecific::VPxConfig(_) =>
-                mp4parse_codec::MP4PARSE_CODEC_VP9,
-            VideoCodecSpecific::AVCConfig(_) =>
-                mp4parse_codec::MP4PARSE_CODEC_AVC,
-        },
-        _ => mp4parse_codec::MP4PARSE_CODEC_UNKNOWN,
-    };
-
-    let track = &context.tracks[track_index];
-
-    if let (Some(track_timescale),
-            Some(context_timescale)) = (track.timescale,
-                                        context.timescale) {
-        let media_time =
-            match track.media_time.map_or(Some(0), |media_time| {
-                    track_time_to_us(media_time, track_timescale) }) {
-                Some(time) => time as i64,
-                None => return MP4PARSE_ERROR_INVALID,
-            };
-        let empty_duration =
-            match track.empty_duration.map_or(Some(0), |empty_duration| {
-                    media_time_to_us(empty_duration, context_timescale) }) {
-                Some(time) => time as i64,
-                None => return MP4PARSE_ERROR_INVALID,
-            };
-        info.media_time = media_time - empty_duration;
-
-        if let Some(track_duration) = track.duration {
-            match track_time_to_us(track_duration, track_timescale) {
-                Some(duration) => info.duration = duration,
-                None => return MP4PARSE_ERROR_INVALID,
-            }
-        } else {
-            // Duration unknown; stagefright returns 0 for this.
-            info.duration = 0
-        }
-    } else {
-        return MP4PARSE_ERROR_INVALID
-    }
-
-    info.track_id = match track.track_id {
-        Some(track_id) => track_id,
-        None => return MP4PARSE_ERROR_INVALID,
-    };
-
-    MP4PARSE_OK
-}
-
-/// Fill the supplied `mp4parse_track_audio_info` with metadata for `track`.
-#[no_mangle]
-pub unsafe extern fn mp4parse_get_track_audio_info(parser: *mut mp4parse_parser, track_index: u32, info: *mut mp4parse_track_audio_info) -> mp4parse_error {
-    if parser.is_null() || info.is_null() || (*parser).poisoned() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let context = (*parser).context_mut();
-
-    if track_index as usize >= context.tracks.len() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let track = &context.tracks[track_index as usize];
-
-    match track.track_type {
-        TrackType::Audio => {}
-        _ => return MP4PARSE_ERROR_INVALID,
-    };
-
-    let audio = match track.data {
-        Some(ref data) => data,
-        None => return MP4PARSE_ERROR_INVALID,
-    };
-
-    let audio = match *audio {
-        SampleEntry::Audio(ref x) => x,
-        _ => return MP4PARSE_ERROR_INVALID,
-    };
-
-    (*info).channels = audio.channelcount;
-    (*info).bit_depth = audio.samplesize;
-    (*info).sample_rate = audio.samplerate >> 16; // 16.16 fixed point
-
-    match audio.codec_specific {
-        AudioCodecSpecific::ES_Descriptor(ref v) => {
-            if v.codec_specific_config.len() > std::u32::MAX as usize {
-                return MP4PARSE_ERROR_INVALID;
-            }
-            (*info).codec_specific_config.length = v.codec_specific_config.len() as u32;
-            (*info).codec_specific_config.data = v.codec_specific_config.as_ptr();
-            if let Some(rate) = v.audio_sample_rate {
-                (*info).sample_rate = rate;
-            }
-            if let Some(channels) = v.audio_channel_count {
-                (*info).channels = channels;
-            }
-        }
-        AudioCodecSpecific::FLACSpecificBox(ref flac) => {
-            // Return the STREAMINFO metadata block in the codec_specific.
-            let streaminfo = &flac.blocks[0];
-            if streaminfo.block_type != 0 || streaminfo.data.len() != 34 {
-                return MP4PARSE_ERROR_INVALID;
-            }
-            (*info).codec_specific_config.length = streaminfo.data.len() as u32;
-            (*info).codec_specific_config.data = streaminfo.data.as_ptr();
-        }
-        AudioCodecSpecific::OpusSpecificBox(ref opus) => {
-            let mut v = Vec::new();
-            match serialize_opus_header(opus, &mut v) {
-                Err(_) => {
-                    return MP4PARSE_ERROR_INVALID;
-                }
-                Ok(_) => {
-                    let header = (*parser).opus_header_mut();
-                    header.insert(track_index, v);
-                    match header.get(&track_index) {
-                        None => {}
-                        Some(v) => {
-                            if v.len() > std::u32::MAX as usize {
-                                return MP4PARSE_ERROR_INVALID;
-                            }
-                            (*info).codec_specific_config.length = v.len() as u32;
-                            (*info).codec_specific_config.data = v.as_ptr();
-                        }
-                    }
-                }
-            }
-        }
-    }
-
-    MP4PARSE_OK
-}
-
-/// Fill the supplied `mp4parse_track_video_info` with metadata for `track`.
-#[no_mangle]
-pub unsafe extern fn mp4parse_get_track_video_info(parser: *mut mp4parse_parser, track_index: u32, info: *mut mp4parse_track_video_info) -> mp4parse_error {
-    if parser.is_null() || info.is_null() || (*parser).poisoned() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let context = (*parser).context_mut();
-
-    if track_index as usize >= context.tracks.len() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let track = &context.tracks[track_index as usize];
-
-    match track.track_type {
-        TrackType::Video => {}
-        _ => return MP4PARSE_ERROR_INVALID,
-    };
-
-    let video = match track.data {
-        Some(ref data) => data,
-        None => return MP4PARSE_ERROR_INVALID,
-    };
-
-    let video = match *video {
-        SampleEntry::Video(ref x) => x,
-        _ => return MP4PARSE_ERROR_INVALID,
-    };
-
-    if let Some(ref tkhd) = track.tkhd {
-        (*info).display_width = tkhd.width >> 16; // 16.16 fixed point
-        (*info).display_height = tkhd.height >> 16; // 16.16 fixed point
-    } else {
-        return MP4PARSE_ERROR_INVALID;
-    }
-    (*info).image_width = video.width;
-    (*info).image_height = video.height;
-
-    MP4PARSE_OK
-}
-
-#[no_mangle]
-pub unsafe extern fn mp4parse_get_fragment_info(parser: *mut mp4parse_parser, info: *mut mp4parse_fragment_info) -> mp4parse_error {
-    if parser.is_null() || info.is_null() || (*parser).poisoned() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let context = (*parser).context();
-    let info: &mut mp4parse_fragment_info = &mut *info;
-
-    info.fragment_duration = 0;
-
-    let duration = match context.mvex {
-        Some(ref mvex) => mvex.fragment_duration,
-        None => return MP4PARSE_ERROR_INVALID,
-    };
-
-    if let (Some(time), Some(scale)) = (duration, context.timescale) {
-        info.fragment_duration = match media_time_to_us(time, scale) {
-            Some(time_us) => time_us as u64,
-            None => return MP4PARSE_ERROR_INVALID,
-        }
-    }
-
-    MP4PARSE_OK
-}
-
-// A fragmented file needs mvex table and contains no data in stts, stsc, and stco boxes.
-#[no_mangle]
-pub unsafe extern fn mp4parse_is_fragmented(parser: *mut mp4parse_parser, track_id: u32, fragmented: *mut u8) -> mp4parse_error {
-    if parser.is_null() || (*parser).poisoned() {
-        return MP4PARSE_ERROR_BADARG;
-    }
-
-    let context = (*parser).context_mut();
-    let tracks = &context.tracks;
-    (*fragmented) = false as u8;
-
-    if context.mvex.is_none() {
-        return MP4PARSE_OK;
-    }
-
-    // check sample tables.
-    let mut iter = tracks.iter();
-    match iter.find(|track| track.track_id == Some(track_id)) {
-        Some(track) if track.empty_sample_boxes.all_empty() => (*fragmented) = true as u8,
-        Some(_) => {},
-        None => return MP4PARSE_ERROR_BADARG,
-    }
-
-    MP4PARSE_OK
-}
-
-#[cfg(test)]
-extern fn panic_read(_: *mut u8, _: usize, _: *mut std::os::raw::c_void) -> isize {
-    panic!("panic_read shouldn't be called in these tests");
-}
-
-#[cfg(test)]
-extern fn error_read(_: *mut u8, _: usize, _: *mut std::os::raw::c_void) -> isize {
-    -1
-}
-
-#[cfg(test)]
-extern fn valid_read(buf: *mut u8, size: usize, userdata: *mut std::os::raw::c_void) -> isize {
-    let mut input: &mut std::fs::File = unsafe { &mut *(userdata as *mut _) };
-
-    let mut buf = unsafe { std::slice::from_raw_parts_mut(buf, size) };
-    match input.read(&mut buf) {
-        Ok(n) => n as isize,
-        Err(_) => -1,
-    }
-}
-
-#[test]
-fn new_parser() {
-    let mut dummy_value: u32 = 42;
-    let io = mp4parse_io {
-        read: panic_read,
-        userdata: &mut dummy_value as *mut _ as *mut std::os::raw::c_void,
-    };
-    unsafe {
-        let parser = mp4parse_new(&io);
-        assert!(!parser.is_null());
-        mp4parse_free(parser);
-    }
-}
-
-#[test]
-#[should_panic(expected = "assertion failed")]
-fn free_null_parser() {
-    unsafe {
-        mp4parse_free(std::ptr::null_mut());
-    }
-}
-
-#[test]
-fn get_track_count_null_parser() {
-    unsafe {
-        let mut count: u32 = 0;
-        let rv = mp4parse_get_track_count(std::ptr::null(), std::ptr::null_mut());
-        assert!(rv == MP4PARSE_ERROR_BADARG);
-        let rv = mp4parse_get_track_count(std::ptr::null(), &mut count);
-        assert!(rv == MP4PARSE_ERROR_BADARG);
-    }
-}
-
-#[test]
-fn arg_validation() {
-    unsafe {
-        // Passing a null mp4parse_io is an error.
-        let parser = mp4parse_new(std::ptr::null());
-        assert!(parser.is_null());
-
-        let null_mut: *mut std::os::raw::c_void = std::ptr::null_mut();
-
-        // Passing an mp4parse_io with null members is an error.
-        let io = mp4parse_io { read: std::mem::transmute(null_mut),
-                               userdata: null_mut };
-        let parser = mp4parse_new(&io);
-        assert!(parser.is_null());
-
-        let io = mp4parse_io { read: panic_read,
-                               userdata: null_mut };
-        let parser = mp4parse_new(&io);
-        assert!(parser.is_null());
-
-        let mut dummy_value = 42;
-        let io = mp4parse_io {
-            read: std::mem::transmute(null_mut),
-            userdata: &mut dummy_value as *mut _ as *mut std::os::raw::c_void,
-        };
-        let parser = mp4parse_new(&io);
-        assert!(parser.is_null());
-
-        // Passing a null mp4parse_parser is an error.
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_read(std::ptr::null_mut()));
-
-        let mut dummy_info = mp4parse_track_info {
-            track_type: MP4PARSE_TRACK_TYPE_VIDEO,
-            codec: mp4parse_codec::MP4PARSE_CODEC_UNKNOWN,
-            track_id: 0,
-            duration: 0,
-            media_time: 0,
-        };
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_info(std::ptr::null_mut(), 0, &mut dummy_info));
-
-        let mut dummy_video = mp4parse_track_video_info {
-            display_width: 0,
-            display_height: 0,
-            image_width: 0,
-            image_height: 0,
-        };
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_video_info(std::ptr::null_mut(), 0, &mut dummy_video));
-
-        let mut dummy_audio = Default::default();
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_audio_info(std::ptr::null_mut(), 0, &mut dummy_audio));
-    }
-}
-
-#[test]
-fn arg_validation_with_parser() {
-    unsafe {
-        let mut dummy_value = 42;
-        let io = mp4parse_io {
-            read: error_read,
-            userdata: &mut dummy_value as *mut _ as *mut std::os::raw::c_void,
-        };
-        let parser = mp4parse_new(&io);
-        assert!(!parser.is_null());
-
-        // Our mp4parse_io read should simply fail with an error.
-        assert_eq!(MP4PARSE_ERROR_IO, mp4parse_read(parser));
-
-        // The parser is now poisoned and unusable.
-        assert_eq!(MP4PARSE_ERROR_BADARG,  mp4parse_read(parser));
-
-        // Null info pointers are an error.
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_info(parser, 0, std::ptr::null_mut()));
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_video_info(parser, 0, std::ptr::null_mut()));
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_audio_info(parser, 0, std::ptr::null_mut()));
-
-        let mut dummy_info = mp4parse_track_info {
-            track_type: MP4PARSE_TRACK_TYPE_VIDEO,
-            codec: mp4parse_codec::MP4PARSE_CODEC_UNKNOWN,
-            track_id: 0,
-            duration: 0,
-            media_time: 0,
-        };
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_info(parser, 0, &mut dummy_info));
-
-        let mut dummy_video = mp4parse_track_video_info {
-            display_width: 0,
-            display_height: 0,
-            image_width: 0,
-            image_height: 0,
-        };
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_video_info(parser, 0, &mut dummy_video));
-
-        let mut dummy_audio = Default::default();
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_audio_info(parser, 0, &mut dummy_audio));
-
-        mp4parse_free(parser);
-    }
-}
-
-#[test]
-fn get_track_count_poisoned_parser() {
-    unsafe {
-        let mut dummy_value = 42;
-        let io = mp4parse_io {
-            read: error_read,
-            userdata: &mut dummy_value as *mut _ as *mut std::os::raw::c_void,
-        };
-        let parser = mp4parse_new(&io);
-        assert!(!parser.is_null());
-
-        // Our mp4parse_io read should simply fail with an error.
-        assert_eq!(MP4PARSE_ERROR_IO, mp4parse_read(parser));
-
-        let mut count: u32 = 0;
-        let rv = mp4parse_get_track_count(parser, &mut count);
-        assert!(rv == MP4PARSE_ERROR_BADARG);
-    }
-}
-
-#[test]
-fn arg_validation_with_data() {
-    unsafe {
-        let mut file = std::fs::File::open("../mp4parse/tests/minimal.mp4").unwrap();
-        let io = mp4parse_io { read: valid_read,
-                               userdata: &mut file as *mut _ as *mut std::os::raw::c_void };
-        let parser = mp4parse_new(&io);
-        assert!(!parser.is_null());
-
-        assert_eq!(MP4PARSE_OK, mp4parse_read(parser));
-
-        let mut count: u32 = 0;
-        assert_eq!(MP4PARSE_OK, mp4parse_get_track_count(parser, &mut count));
-        assert_eq!(2, count);
-
-        let mut info = mp4parse_track_info {
-            track_type: MP4PARSE_TRACK_TYPE_VIDEO,
-            codec: mp4parse_codec::MP4PARSE_CODEC_UNKNOWN,
-            track_id: 0,
-            duration: 0,
-            media_time: 0,
-        };
-        assert_eq!(MP4PARSE_OK, mp4parse_get_track_info(parser, 0, &mut info));
-        assert_eq!(info.track_type, MP4PARSE_TRACK_TYPE_VIDEO);
-        assert_eq!(info.codec, mp4parse_codec::MP4PARSE_CODEC_AVC);
-        assert_eq!(info.track_id, 1);
-        assert_eq!(info.duration, 40000);
-        assert_eq!(info.media_time, 0);
-
-        assert_eq!(MP4PARSE_OK, mp4parse_get_track_info(parser, 1, &mut info));
-        assert_eq!(info.track_type, MP4PARSE_TRACK_TYPE_AUDIO);
-        assert_eq!(info.codec, mp4parse_codec::MP4PARSE_CODEC_AAC);
-        assert_eq!(info.track_id, 2);
-        assert_eq!(info.duration, 61333);
-        assert_eq!(info.media_time, 21333);
-
-        let mut video = mp4parse_track_video_info {
-            display_width: 0,
-            display_height: 0,
-            image_width: 0,
-            image_height: 0,
-        };
-        assert_eq!(MP4PARSE_OK, mp4parse_get_track_video_info(parser, 0, &mut video));
-        assert_eq!(video.display_width, 320);
-        assert_eq!(video.display_height, 240);
-        assert_eq!(video.image_width, 320);
-        assert_eq!(video.image_height, 240);
-
-        let mut audio = Default::default();
-        assert_eq!(MP4PARSE_OK, mp4parse_get_track_audio_info(parser, 1, &mut audio));
-        assert_eq!(audio.channels, 1);
-        assert_eq!(audio.bit_depth, 16);
-        assert_eq!(audio.sample_rate, 48000);
-
-        // Test with an invalid track number.
-        let mut info = mp4parse_track_info {
-            track_type: MP4PARSE_TRACK_TYPE_VIDEO,
-            codec: mp4parse_codec::MP4PARSE_CODEC_UNKNOWN,
-            track_id: 0,
-            duration: 0,
-            media_time: 0,
-        };
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_info(parser, 3, &mut info));
-        assert_eq!(info.track_type, MP4PARSE_TRACK_TYPE_VIDEO);
-        assert_eq!(info.codec, mp4parse_codec::MP4PARSE_CODEC_UNKNOWN);
-        assert_eq!(info.track_id, 0);
-        assert_eq!(info.duration, 0);
-        assert_eq!(info.media_time, 0);
-
-        let mut video = mp4parse_track_video_info { display_width: 0,
-                                                    display_height: 0,
-                                                    image_width: 0,
-                                                    image_height: 0 };
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_video_info(parser, 3, &mut video));
-        assert_eq!(video.display_width, 0);
-        assert_eq!(video.display_height, 0);
-        assert_eq!(video.image_width, 0);
-        assert_eq!(video.image_height, 0);
-
-        let mut audio = Default::default();
-        assert_eq!(MP4PARSE_ERROR_BADARG, mp4parse_get_track_audio_info(parser, 3, &mut audio));
-        assert_eq!(audio.channels, 0);
-        assert_eq!(audio.bit_depth, 0);
-        assert_eq!(audio.sample_rate, 0);
-
-        mp4parse_free(parser);
-    }
-}
-
-#[test]
-fn rational_scale_overflow() {
-    assert_eq!(rational_scale(17, 3, 1000), Some(5666));
-    let large = 0x4000_0000_0000_0000;
-    assert_eq!(rational_scale(large, 2, 2), Some(large));
-    assert_eq!(rational_scale(large, 4, 4), Some(large));
-    assert_eq!(rational_scale(large, 2, 8), None);
-    assert_eq!(rational_scale(large, 8, 4), Some(large/2));
-    assert_eq!(rational_scale(large + 1, 4, 4), Some(large+1));
-    assert_eq!(rational_scale(large, 40, 1000), None);
-}
-
-#[test]
-fn media_time_overflow() {
-  let scale = MediaTimeScale(90000);
-  let duration = MediaScaledTime(9007199254710000);
-  assert_eq!(media_time_to_us(duration, scale), Some(100079991719000000));
-}
-
-#[test]
-fn track_time_overflow() {
-  let scale = TrackTimeScale(44100, 0);
-  let duration = TrackScaledTime(4413527634807900, 0);
-  assert_eq!(track_time_to_us(duration, scale), Some(100079991719000000));
-}
diff --git a/media/libstagefright/binding/update-rust.sh b/media/libstagefright/binding/update-rust.sh
deleted file mode 100755
index a8a462f6db..0000000000
--- a/media/libstagefright/binding/update-rust.sh
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/bin/sh -e
-# Script to update mp4parse-rust sources to latest upstream
-
-# Default version.
-VER=v0.6.0
-
-# Accept version or commit from the command line.
-if test -n "$1"; then
-  VER=$1
-fi
-
-echo "Fetching sources..."
-rm -rf _upstream
-git clone https://github.com/mozilla/mp4parse-rust _upstream/mp4parse
-pushd _upstream/mp4parse
-git checkout ${VER}
-echo "Verifying sources..."
-pushd mp4parse
-cargo test
-popd
-echo "Constructing C api header..."
-pushd mp4parse_capi
-cargo build
-echo "Verifying sources..."
-cargo test
-popd
-popd
-rm -rf mp4parse
-mkdir -p mp4parse/src
-cp _upstream/mp4parse/mp4parse/Cargo.toml mp4parse/
-cp _upstream/mp4parse/mp4parse/src/*.rs mp4parse/src/
-mkdir -p mp4parse/tests
-cp _upstream/mp4parse/mp4parse/tests/*.rs mp4parse/tests/
-cp _upstream/mp4parse/mp4parse/tests/*.mp4 mp4parse/tests/
-rm -rf mp4parse_capi
-mkdir -p mp4parse_capi/src
-cp _upstream/mp4parse/mp4parse_capi/Cargo.toml mp4parse_capi/
-cp _upstream/mp4parse/mp4parse_capi/build.rs mp4parse_capi/
-cp _upstream/mp4parse/mp4parse_capi/include/mp4parse.h include/
-cp _upstream/mp4parse/mp4parse_capi/src/*.rs mp4parse_capi/src/
-
-echo "Applying patches..."
-patch -p4 < mp4parse-cargo.patch
-
-echo "Cleaning up..."
-rm -rf _upstream
-
-echo "Updating gecko Cargo.lock..."
-pushd ../../../toolkit/library/rust/
-cargo update --package mp4parse_capi
-popd
-pushd ../../../toolkit/library/gtest/rust/
-cargo update --package mp4parse_capi
-popd
-
-echo "Updated to ${VER}."