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a2dp_sink_demo: clarify wav reporting, store wav in a2dp_sink_demo.wav

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This commit is contained in:
Matthias Ringwald 2020-03-19 10:47:49 +01:00
parent 0d6cebf8ee
commit 5c99b5e730
1 changed files with 18 additions and 16 deletions
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34
example/a2dp_sink_demo.c
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@ -114,14 +114,14 @@ static int request_frames;
#define STORE_FROM_PLAYBACK
// WAV File
#ifdef STORE_TO_WAV_FILE
static int frame_count = 0;
static char * wav_filename = "avdtp_sink.wav";
#ifdef STORE_TO_WAV_FILE
static uint32_t audio_frame_count = 0;
static char * wav_filename = "av2dp_sink_demo.wav";
#endif
#ifdef STORE_TO_SBC_FILE
static FILE * sbc_file;
static char * sbc_filename = "avdtp_sink.sbc";
static char * sbc_filename = "av2dp_sink_demo.sbc";
#endif
static int volume_percentage = 0;
@ -294,28 +294,28 @@ static int a2dp_and_avrcp_setup(void){
return 0;
}
static void playback_handler(int16_t * buffer, uint16_t num_frames){
static void playback_handler(int16_t * buffer, uint16_t num_audio_frames){
#ifdef STORE_TO_WAV_FILE
int wav_samples = num_frames * NUM_CHANNELS;
int wav_samples = num_audio_frames * NUM_CHANNELS;
int16_t * wav_buffer = buffer;
#endif
// called from lower-layer but guaranteed to be on main thread
if (sbc_frame_size == 0){
memset(buffer, 0, num_frames * BYTES_PER_FRAME);
memset(buffer, 0, num_audio_frames * BYTES_PER_FRAME);
return;
}
// first fill from resampled audio
uint32_t bytes_read;
btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_frames * BYTES_PER_FRAME, &bytes_read);
btstack_ring_buffer_read(&decoded_audio_ring_buffer, (uint8_t *) buffer, num_audio_frames * BYTES_PER_FRAME, &bytes_read);
buffer += bytes_read / NUM_CHANNELS;
num_frames -= bytes_read / BYTES_PER_FRAME;
num_audio_frames -= bytes_read / BYTES_PER_FRAME;
// then start decoding sbc frames using request_* globals
request_buffer = buffer;
request_frames = num_frames;
request_frames = num_audio_frames;
while (request_frames && btstack_ring_buffer_bytes_available(&sbc_frame_ring_buffer) >= sbc_frame_size){
// decode frame
uint8_t sbc_frame[MAX_SBC_FRAME_SIZE];
@ -324,11 +324,12 @@ static void playback_handler(int16_t * buffer, uint16_t num_frames){
}
#ifdef STORE_TO_WAV_FILE
audio_frame_count += num_audio_frames;
wav_writer_write_int16(wav_samples, wav_buffer);
#endif
}
static void handle_pcm_data(int16_t * data, int num_frames, int num_channels, int sample_rate, void * context){
static void handle_pcm_data(int16_t * data, int num_audio_frames, int num_channels, int sample_rate, void * context){
UNUSED(sample_rate);
UNUSED(context);
UNUSED(num_channels); // must be stereo == 2
@ -336,14 +337,15 @@ static void handle_pcm_data(int16_t * data, int num_frames, int num_channels, in
const btstack_audio_sink_t * audio_sink = btstack_audio_sink_get_instance();
if (!audio_sink){
#ifdef STORE_TO_WAV_FILE
wav_writer_write_int16(num_frames * NUM_CHANNELS, data);
audio_frame_count += num_audio_frames;
wav_writer_write_int16(num_audio_frames * NUM_CHANNELS, data);
#endif
return;
}
// resample into request buffer - add some additional space for resampling
int16_t output_buffer[(128+16) * NUM_CHANNELS]; // 16 * 8 * 2
uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_frames, output_buffer);
uint32_t resampled_frames = btstack_resample_block(&resample_instance, data, num_audio_frames, output_buffer);
// store data in btstack_audio buffer first
int frames_to_copy = btstack_min(resampled_frames, request_frames);
@ -417,10 +419,10 @@ static void media_processing_close(void){
#ifdef STORE_TO_WAV_FILE
wav_writer_close();
int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr;
uint32_t total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr;
printf("WAV Writer: Decoding done. Processed totaly %d frames:\n - %d good\n - %d bad\n", total_frames_nr, state.good_frames_nr, total_frames_nr - state.good_frames_nr);
printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename);
printf("WAV Writer: Decoding done. Processed %u SBC frames:\n - %d good\n - %d bad\n", total_frames_nr, state.good_frames_nr, total_frames_nr - state.good_frames_nr);
printf("WAV Writer: Wrote %u audio frames to wav file: %s\n", audio_frame_count, wav_filename);
#endif
#ifdef STORE_TO_SBC_FILE