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https://github.com/bluekitchen/btstack.git
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sco_util_demo: enable to start/stop audio multiple times
This commit is contained in:
Matthias Ringwald
parent
b038503d09
commit
e4f319364d
@ -102,7 +102,8 @@
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// portaudio globals
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static PaStream * stream;
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static uint8_t pa_stream_started = 0;
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static int pa_stream_started = 0;
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static int pa_stream_paused = 0;
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static uint8_t ring_buffer_storage[2*MSBC_PREBUFFER_BYTES];
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static btstack_ring_buffer_t ring_buffer;
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@ -111,7 +112,7 @@ static btstack_ring_buffer_t ring_buffer;
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static int dump_data = 1;
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static int count_sent = 0;
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static int count_received = 0;
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static uint8_t negotiated_codec = 0;
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static int negotiated_codec = -1;
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#if SCO_DEMO_MODE != SCO_DEMO_MODE_55
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static int phase = 0;
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#endif
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@ -189,21 +190,38 @@ static int patestCallback( const void *inputBuffer, void *outputBuffer,
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(void) inputBuffer;
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(void) userData;
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uint32_t bytes_read = 0;
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int bytes_per_buffer = framesPerBuffer;
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// config based on codec
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int bytes_to_copy;
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int prebuffer_bytes;
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if (negotiated_codec == HFP_CODEC_MSBC){
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bytes_per_buffer *= MSBC_BYTES_PER_FRAME;
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bytes_to_copy = framesPerBuffer * MSBC_BYTES_PER_FRAME;
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prebuffer_bytes = MSBC_PREBUFFER_BYTES;
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} else {
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bytes_per_buffer *= CVSD_BYTES_PER_FRAME;
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bytes_to_copy = framesPerBuffer * CVSD_BYTES_PER_FRAME;
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prebuffer_bytes = CVSD_PREBUFFER_BYTES;
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}
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if (btstack_ring_buffer_bytes_available(&ring_buffer) >= bytes_per_buffer){
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btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_per_buffer, &bytes_read);
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} else {
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printf("NOT ENOUGH DATA!\n");
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memset(outputBuffer, 0, bytes_per_buffer);
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// fill with silence while paused
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if (pa_stream_paused){
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if (btstack_ring_buffer_bytes_available(&ring_buffer) < prebuffer_bytes){
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memset(outputBuffer, 0, bytes_to_copy);
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return 0;
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} else {
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// resume playback
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pa_stream_paused = 0;
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}
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}
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// get data from ringbuffer
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uint32_t bytes_read = 0;
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btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_to_copy, &bytes_read);
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bytes_to_copy -= bytes_read;
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// fill with 0 if not enough
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if (bytes_to_copy){
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memset(outputBuffer + bytes_read, 0, bytes_to_copy);
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pa_stream_paused = 1;
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}
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// printf("bytes avail after read: %d\n", btstack_ring_buffer_bytes_available(&ring_buffer));
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return 0;
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}
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#endif
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@ -213,8 +231,8 @@ static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, i
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UNUSED(sample_rate);
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// printf("handle_pcm_data num samples %u, sample rate %d\n", num_samples, num_channels);
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#ifdef USE_PORTAUDIO
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if (!pa_stream_started && btstack_ring_buffer_bytes_available(&ring_buffer) >= MSBC_PREBUFFER_BYTES){
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#ifdef HAVE_PORTAUDIO
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if (!pa_stream_started){
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/* -- start stream -- */
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PaError err = Pa_StartStream(stream);
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if (err != paNoError){
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@ -222,12 +240,12 @@ static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, i
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return;
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}
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pa_stream_started = 1;
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pa_stream_paused = 1;
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}
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btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2);
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// printf("bytes avail after write: %d\n", btstack_ring_buffer_bytes_available(&ring_buffer));
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#else
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UNUSED(num_channels);
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#endif
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#endif
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if (!num_samples_to_write) return;
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@ -242,6 +260,8 @@ static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, i
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}
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static void sco_demo_init_mSBC(void){
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printf("SCO Demo: Init CVSD\n");
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int sample_rate = 16000;
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wav_writer_open(SCO_WAV_FILENAME, 1, sample_rate);
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btstack_sbc_decoder_init(&decoder_state, SBC_MODE_mSBC, &handle_pcm_data, NULL);
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@ -265,6 +285,7 @@ static void sco_demo_init_mSBC(void){
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PaStreamParameters outputParameters;
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/* -- initialize PortAudio -- */
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printf("PortAudio: Initialize\n");
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err = Pa_Initialize();
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if( err != paNoError ) return;
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/* -- setup input and output -- */
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@ -274,6 +295,7 @@ static void sco_demo_init_mSBC(void){
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outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;
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outputParameters.hostApiSpecificStreamInfo = NULL;
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/* -- setup stream -- */
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printf("PortAudio: Open stream\n");
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err = Pa_OpenStream(
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&stream,
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NULL, // &inputParameters,
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@ -284,7 +306,7 @@ static void sco_demo_init_mSBC(void){
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patestCallback, /* no callback, use blocking API */
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NULL ); /* no callback, so no callback userData */
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if (err != paNoError){
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printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err));
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printf("Error opening portaudio stream: \"%s\"\n", Pa_GetErrorText(err));
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return;
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}
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memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage));
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@ -304,6 +326,8 @@ static void sco_demo_receive_mSBC(uint8_t * packet, uint16_t size){
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}
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static void sco_demo_init_CVSD(void){
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printf("SCO Demo: Init CVSD\n");
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int sample_rate = 8000;
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wav_writer_open(SCO_WAV_FILENAME, 1, sample_rate);
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btstack_cvsd_plc_init(&cvsd_plc_state);
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@ -314,6 +338,7 @@ static void sco_demo_init_CVSD(void){
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PaStreamParameters outputParameters;
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/* -- initialize PortAudio -- */
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printf("PortAudio: Initialize\n");
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err = Pa_Initialize();
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if( err != paNoError ) return;
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/* -- setup input and output -- */
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@ -323,6 +348,7 @@ static void sco_demo_init_CVSD(void){
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outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;
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outputParameters.hostApiSpecificStreamInfo = NULL;
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/* -- setup stream -- */
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printf("PortAudio: Open stream\n");
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err = Pa_OpenStream(
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&stream,
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NULL, // &inputParameters,
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@ -333,7 +359,7 @@ static void sco_demo_init_CVSD(void){
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patestCallback, /* no callback, use blocking API */
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NULL ); /* no callback, so no callback userData */
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if (err != paNoError){
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printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err));
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printf("Error opening portaudio stream: \"%s\"\n", Pa_GetErrorText(err));
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return;
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}
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memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage));
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@ -362,14 +388,15 @@ static void sco_demo_receive_CVSD(uint8_t * packet, uint16_t size){
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sco_demo_close();
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}
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#ifdef USE_PORTAUDIO
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if (!pa_stream_started && btstack_ring_buffer_bytes_available(&ring_buffer) >= CVSD_PREBUFFER_BYTES){
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if (!pa_stream_started){
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/* -- start stream -- */
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PaError err = Pa_StartStream(stream);
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if (err != paNoError){
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printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err));
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printf("sco_demo_receive_CVSD: Error starting the stream: \"%s\"\n", Pa_GetErrorText(err));
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return;
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}
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pa_stream_started = 1;
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pa_stream_paused = 1;
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}
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btstack_ring_buffer_write(&ring_buffer, (uint8_t *)audio_frame_out, samples_to_write);
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#endif
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@ -379,6 +406,7 @@ static void sco_demo_receive_CVSD(uint8_t * packet, uint16_t size){
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#endif
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void sco_demo_close(void){
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printf("SCO demo close\n");
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
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#if defined(SCO_WAV_FILENAME) || defined(SCO_SBC_FILENAME)
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wav_writer_close();
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@ -392,18 +420,21 @@ void sco_demo_close(void){
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#ifdef HAVE_PORTAUDIO
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if (pa_stream_started){
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printf("PortAudio: Stop Stream\n");
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PaError err = Pa_StopStream(stream);
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if (err != paNoError){
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printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err));
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return;
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}
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pa_stream_started = 0;
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printf("PortAudio: Close Stream\n");
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err = Pa_CloseStream(stream);
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if (err != paNoError){
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printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err));
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return;
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}
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printf("PortAudio: Terminate\n");
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err = Pa_Terminate();
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if (err != paNoError){
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printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err));
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@ -411,8 +442,8 @@ void sco_demo_close(void){
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}
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}
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#endif
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#ifdef SCO_WAV_FILENAME
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#if 0
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printf("SCO Demo: closing wav file\n");
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if (negotiated_codec == HFP_CODEC_MSBC){
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@ -425,6 +456,9 @@ void sco_demo_close(void){
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}
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#endif
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#endif
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negotiated_codec = -1;
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#endif
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}
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