diff options
Diffstat (limited to 'audio.c')
| -rw-r--r-- | audio.c | 61 |
1 files changed, 44 insertions, 17 deletions
@@ -351,7 +351,6 @@ static void *AudioPlayHandlerThread(void *dummy) int err; Debug(3, "audio: play thread started\n"); - for (;;) { Debug(3, "audio: wait on start condition\n"); pthread_mutex_lock(&AudioMutex); @@ -437,6 +436,37 @@ void AudioEnqueue(const void *samples, int count) } } +/** +** Initialize audio thread. +*/ +static void AudioInitThread(void) +{ + pthread_mutex_init(&AudioMutex, NULL); + pthread_cond_init(&AudioStartCond, NULL); + pthread_create(&AudioThread, NULL, AudioPlayHandlerThread, NULL); + //pthread_detach(AudioThread); + do { + pthread_yield(); + } while (!AlsaPCMHandle); +} + +/** +** Cleanup audio thread. +*/ +static void AudioExitThread(void) +{ + void *retval; + + if (pthread_cancel(AudioThread)) { + Error(_("audio: can't queue cancel alsa play thread\n")); + } + if (pthread_join(AudioThread, &retval) || retval != PTHREAD_CANCELED) { + Error(_("audio: can't cancel alsa play thread\n")); + } + pthread_cond_destroy(&AudioStartCond); + pthread_mutex_destroy(&AudioMutex); +} + #endif //---------------------------------------------------------------------------- @@ -531,10 +561,6 @@ static void AlsaInitPCM(void) snd_pcm_hw_params_get_buffer_size_max(hw_params, &buffer_size); Info(_("audio/alsa: max buffer size %lu\n"), buffer_size); - pthread_mutex_init(&AudioMutex, NULL); - pthread_cond_init(&AudioStartCond, NULL); - pthread_create(&AudioThread, NULL, AudioPlayHandlerThread, NULL); - //pthread_detach(AudioThread); } //---------------------------------------------------------------------------- @@ -647,6 +673,9 @@ uint64_t AudioGetDelay(void) snd_pcm_sframes_t delay; uint64_t pts; + if (!AlsaPCMHandle) { + return 0; + } // delay in frames in alsa + kernel buffers if ((err = snd_pcm_delay(AlsaPCMHandle, &delay)) < 0) { //Debug(3, "audio/alsa: no hw delay\n"); @@ -887,6 +916,9 @@ void AudioInit(void) if (AudioSetup(&freq, &chan)) { // set default parameters Error(_("audio: can't do initial setup\n")); } +#ifdef USE_AUDIO_THREAD + AudioInitThread(); +#endif AudioPaused = 1; } @@ -896,17 +928,9 @@ void AudioInit(void) */ void AudioExit(void) { - void *retval; - - if (pthread_cancel(AudioThread)) { - Error(_("audio: can't queue cancel alsa play thread\n")); - } - if (pthread_join(AudioThread, &retval) || retval != PTHREAD_CANCELED) { - Error(_("audio: can't cancel alsa play thread\n")); - } - pthread_cond_destroy(&AudioStartCond); - pthread_mutex_destroy(&AudioMutex); - +#ifdef USE_AUDIO_THREAD + AudioExitThread(); +#endif if (AlsaPCMHandle) { snd_pcm_close(AlsaPCMHandle); AlsaPCMHandle = NULL; @@ -931,17 +955,20 @@ void AudioTest(void) for (;;) { unsigned u; uint8_t buffer[16 * 1024]; // some random data + int i; for (u = 0; u < sizeof(buffer); u++) { buffer[u] = random() & 0xffff; } Debug(3, "audio/test: loop\n"); - for (;;) { + for (i = 0; i < 100; ++i) { while (RingBufferFreeBytes(AlsaRingBuffer) > sizeof(buffer)) { AudioEnqueue(buffer, sizeof(buffer)); } + usleep(20 * 1000); } + break; } } |