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Diffstat (limited to 'media/libcubeb/tests/test_audio.cpp')
-rw-r--r--media/libcubeb/tests/test_audio.cpp294
1 files changed, 294 insertions, 0 deletions
diff --git a/media/libcubeb/tests/test_audio.cpp b/media/libcubeb/tests/test_audio.cpp
new file mode 100644
index 0000000000..4943223e68
--- /dev/null
+++ b/media/libcubeb/tests/test_audio.cpp
@@ -0,0 +1,294 @@
+/*
+ * Copyright © 2013 Sebastien Alaiwan <sebastien.alaiwan@gmail.com>
+ *
+ * This program is made available under an ISC-style license. See the
+ * accompanying file LICENSE for details.
+ */
+
+/* libcubeb api/function exhaustive test. Plays a series of tones in different
+ * conditions. */
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#define _XOPEN_SOURCE 600
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <assert.h>
+#include <string.h>
+
+#include "cubeb/cubeb.h"
+#include "common.h"
+#ifdef CUBEB_GECKO_BUILD
+#include "TestHarness.h"
+#endif
+
+#define MAX_NUM_CHANNELS 32
+
+#if !defined(M_PI)
+#define M_PI 3.14159265358979323846
+#endif
+
+#define NELEMS(x) ((int) (sizeof(x) / sizeof(x[0])))
+#define VOLUME 0.2
+
+float get_frequency(int channel_index)
+{
+ return 220.0f * (channel_index+1);
+}
+
+/* store the phase of the generated waveform */
+typedef struct {
+ int num_channels;
+ float phase[MAX_NUM_CHANNELS];
+ float sample_rate;
+} synth_state;
+
+synth_state* synth_create(int num_channels, float sample_rate)
+{
+ synth_state* synth = (synth_state *) malloc(sizeof(synth_state));
+ if (!synth)
+ return NULL;
+ for(int i=0;i < MAX_NUM_CHANNELS;++i)
+ synth->phase[i] = 0.0f;
+ synth->num_channels = num_channels;
+ synth->sample_rate = sample_rate;
+ return synth;
+}
+
+void synth_destroy(synth_state* synth)
+{
+ free(synth);
+}
+
+void synth_run_float(synth_state* synth, float* audiobuffer, long nframes)
+{
+ for(int c=0;c < synth->num_channels;++c) {
+ float freq = get_frequency(c);
+ float phase_inc = 2.0 * M_PI * freq / synth->sample_rate;
+ for(long n=0;n < nframes;++n) {
+ audiobuffer[n*synth->num_channels+c] = sin(synth->phase[c]) * VOLUME;
+ synth->phase[c] += phase_inc;
+ }
+ }
+}
+
+long data_cb_float(cubeb_stream * /*stream*/, void * user, const void * /*inputbuffer*/, void * outputbuffer, long nframes)
+{
+ synth_state *synth = (synth_state *)user;
+ synth_run_float(synth, (float*)outputbuffer, nframes);
+ return nframes;
+}
+
+void synth_run_16bit(synth_state* synth, short* audiobuffer, long nframes)
+{
+ for(int c=0;c < synth->num_channels;++c) {
+ float freq = get_frequency(c);
+ float phase_inc = 2.0 * M_PI * freq / synth->sample_rate;
+ for(long n=0;n < nframes;++n) {
+ audiobuffer[n*synth->num_channels+c] = sin(synth->phase[c]) * VOLUME * 32767.0f;
+ synth->phase[c] += phase_inc;
+ }
+ }
+}
+
+long data_cb_short(cubeb_stream * /*stream*/, void * user, const void * /*inputbuffer*/, void * outputbuffer, long nframes)
+{
+ synth_state *synth = (synth_state *)user;
+ synth_run_16bit(synth, (short*)outputbuffer, nframes);
+ return nframes;
+}
+
+void state_cb(cubeb_stream * /*stream*/, void * /*user*/, cubeb_state /*state*/)
+{
+}
+
+/* Our android backends don't support float, only int16. */
+int supports_float32(const char* backend_id)
+{
+ return (strcmp(backend_id, "opensl") != 0 &&
+ strcmp(backend_id, "audiotrack") != 0);
+}
+
+/* The WASAPI backend only supports float. */
+int supports_int16(const char* backend_id)
+{
+ return strcmp(backend_id, "wasapi") != 0;
+}
+
+/* Some backends don't have code to deal with more than mono or stereo. */
+int supports_channel_count(const char* backend_id, int nchannels)
+{
+ return nchannels <= 2 ||
+ (strcmp(backend_id, "opensl") != 0 && strcmp(backend_id, "audiotrack") != 0);
+}
+
+int run_test(int num_channels, int sampling_rate, int is_float)
+{
+ int r = CUBEB_OK;
+
+ cubeb *ctx = NULL;
+ synth_state* synth = NULL;
+ cubeb_stream *stream = NULL;
+ const char * backend_id = NULL;
+
+ r = cubeb_init(&ctx, "Cubeb audio test: channels");
+ if (r != CUBEB_OK) {
+ fprintf(stderr, "Error initializing cubeb library\n");
+ goto cleanup;
+ }
+
+ backend_id = cubeb_get_backend_id(ctx);
+
+ if ((is_float && !supports_float32(backend_id)) ||
+ (!is_float && !supports_int16(backend_id)) ||
+ !supports_channel_count(backend_id, num_channels)) {
+ /* don't treat this as a test failure. */
+ goto cleanup;
+ }
+
+ fprintf(stderr, "Testing %d channel(s), %d Hz, %s (%s)\n", num_channels, sampling_rate, is_float ? "float" : "short", cubeb_get_backend_id(ctx));
+
+ cubeb_stream_params params;
+ params.format = is_float ? CUBEB_SAMPLE_FLOAT32NE : CUBEB_SAMPLE_S16NE;
+ params.rate = sampling_rate;
+ params.channels = num_channels;
+
+ synth = synth_create(params.channels, params.rate);
+ if (synth == NULL) {
+ fprintf(stderr, "Out of memory\n");
+ goto cleanup;
+ }
+
+ r = cubeb_stream_init(ctx, &stream, "test tone", NULL, NULL, NULL, &params,
+ 4096, is_float ? data_cb_float : data_cb_short, state_cb, synth);
+ if (r != CUBEB_OK) {
+ fprintf(stderr, "Error initializing cubeb stream: %d\n", r);
+ goto cleanup;
+ }
+
+ cubeb_stream_start(stream);
+ delay(200);
+ cubeb_stream_stop(stream);
+
+cleanup:
+ cubeb_stream_destroy(stream);
+ cubeb_destroy(ctx);
+ synth_destroy(synth);
+
+ return r;
+}
+
+int run_panning_volume_test(int is_float)
+{
+ int r = CUBEB_OK;
+
+ cubeb *ctx = NULL;
+ synth_state* synth = NULL;
+ cubeb_stream *stream = NULL;
+ const char * backend_id = NULL;
+
+ r = cubeb_init(&ctx, "Cubeb audio test");
+ if (r != CUBEB_OK) {
+ fprintf(stderr, "Error initializing cubeb library\n");
+ goto cleanup;
+ }
+ backend_id = cubeb_get_backend_id(ctx);
+
+ if ((is_float && !supports_float32(backend_id)) ||
+ (!is_float && !supports_int16(backend_id))) {
+ /* don't treat this as a test failure. */
+ goto cleanup;
+ }
+
+ cubeb_stream_params params;
+ params.format = is_float ? CUBEB_SAMPLE_FLOAT32NE : CUBEB_SAMPLE_S16NE;
+ params.rate = 44100;
+ params.channels = 2;
+
+ synth = synth_create(params.channels, params.rate);
+ if (synth == NULL) {
+ fprintf(stderr, "Out of memory\n");
+ goto cleanup;
+ }
+
+ r = cubeb_stream_init(ctx, &stream, "test tone", NULL, NULL, NULL, &params,
+ 4096, is_float ? data_cb_float : data_cb_short,
+ state_cb, synth);
+ if (r != CUBEB_OK) {
+ fprintf(stderr, "Error initializing cubeb stream: %d\n", r);
+ goto cleanup;
+ }
+
+ fprintf(stderr, "Testing: volume\n");
+ for(int i=0;i <= 4; ++i)
+ {
+ fprintf(stderr, "Volume: %d%%\n", i*25);
+
+ cubeb_stream_set_volume(stream, i/4.0f);
+ cubeb_stream_start(stream);
+ delay(400);
+ cubeb_stream_stop(stream);
+ delay(100);
+ }
+
+ fprintf(stderr, "Testing: panning\n");
+ for(int i=-4;i <= 4; ++i)
+ {
+ fprintf(stderr, "Panning: %.2f%%\n", i/4.0f);
+
+ cubeb_stream_set_panning(stream, i/4.0f);
+ cubeb_stream_start(stream);
+ delay(400);
+ cubeb_stream_stop(stream);
+ delay(100);
+ }
+
+cleanup:
+ cubeb_stream_destroy(stream);
+ cubeb_destroy(ctx);
+ synth_destroy(synth);
+
+ return r;
+}
+
+void run_channel_rate_test()
+{
+ int channel_values[] = {
+ 1,
+ 2,
+ 3,
+ 4,
+ 6,
+ };
+
+ int freq_values[] = {
+ 16000,
+ 24000,
+ 44100,
+ 48000,
+ };
+
+ for(int j = 0; j < NELEMS(channel_values); ++j) {
+ for(int i = 0; i < NELEMS(freq_values); ++i) {
+ assert(channel_values[j] < MAX_NUM_CHANNELS);
+ fprintf(stderr, "--------------------------\n");
+ assert(run_test(channel_values[j], freq_values[i], 0) == CUBEB_OK);
+ assert(run_test(channel_values[j], freq_values[i], 1) == CUBEB_OK);
+ }
+ }
+}
+
+
+int main(int /*argc*/, char * /*argv*/[])
+{
+#ifdef CUBEB_GECKO_BUILD
+ ScopedXPCOM xpcom("test_audio");
+#endif
+
+ assert(run_panning_volume_test(0) == CUBEB_OK);
+ assert(run_panning_volume_test(1) == CUBEB_OK);
+ run_channel_rate_test();
+
+ return CUBEB_OK;
+}
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