summaryrefslogtreecommitdiff
path: root/media/libaom/src/aom_dsp/buf_ans.c
diff options
context:
space:
mode:
Diffstat (limited to 'media/libaom/src/aom_dsp/buf_ans.c')
-rw-r--r--media/libaom/src/aom_dsp/buf_ans.c70
1 files changed, 0 insertions, 70 deletions
diff --git a/media/libaom/src/aom_dsp/buf_ans.c b/media/libaom/src/aom_dsp/buf_ans.c
deleted file mode 100644
index f7703dffc6..0000000000
--- a/media/libaom/src/aom_dsp/buf_ans.c
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2016, Alliance for Open Media. All rights reserved
- *
- * This source code is subject to the terms of the BSD 2 Clause License and
- * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
- * was not distributed with this source code in the LICENSE file, you can
- * obtain it at www.aomedia.org/license/software. If the Alliance for Open
- * Media Patent License 1.0 was not distributed with this source code in the
- * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
- */
-
-#include <string.h>
-
-#include "aom_dsp/buf_ans.h"
-#include "aom_mem/aom_mem.h"
-#include "aom/internal/aom_codec_internal.h"
-
-void aom_buf_ans_alloc(struct BufAnsCoder *c,
- struct aom_internal_error_info *error) {
- c->error = error;
- assert(c->size > 1);
- AOM_CHECK_MEM_ERROR(error, c->buf, aom_malloc(c->size * sizeof(*c->buf)));
- // Initialize to overfull to trigger the assert in write.
- c->offset = c->size + 1;
-}
-
-void aom_buf_ans_free(struct BufAnsCoder *c) {
- aom_free(c->buf);
- c->buf = NULL;
- c->size = 0;
-}
-
-#if !ANS_MAX_SYMBOLS
-void aom_buf_ans_grow(struct BufAnsCoder *c) {
- struct buffered_ans_symbol *new_buf = NULL;
- int new_size = c->size * 2;
- AOM_CHECK_MEM_ERROR(c->error, new_buf,
- aom_malloc(new_size * sizeof(*new_buf)));
- memcpy(new_buf, c->buf, c->size * sizeof(*c->buf));
- aom_free(c->buf);
- c->buf = new_buf;
- c->size = new_size;
-}
-#endif
-
-void aom_buf_ans_flush(struct BufAnsCoder *const c) {
- int offset;
-#if ANS_MAX_SYMBOLS
- if (c->offset == 0) return;
-#endif
- assert(c->offset > 0);
- offset = c->offset - 1;
- // Code the first symbol such that it brings the state to the smallest normal
- // state from an initial state that would have been a subnormal/refill state.
- if (c->buf[offset].method == ANS_METHOD_RANS) {
- c->ans.state += c->buf[offset].val_start;
- } else {
- c->ans.state += c->buf[offset].val_start ? c->buf[offset].prob : 0;
- }
- for (offset = offset - 1; offset >= 0; --offset) {
- if (c->buf[offset].method == ANS_METHOD_RANS) {
- rans_write(&c->ans, c->buf[offset].val_start, c->buf[offset].prob);
- } else {
- rabs_write(&c->ans, (uint8_t)c->buf[offset].val_start,
- (AnsP8)c->buf[offset].prob);
- }
- }
- c->offset = 0;
- c->output_bytes += ans_write_end(&c->ans);
-}