barwidth = itemWidth*(nItems+1); } /* PrintHeading: print the info in given HeadInfo record */ void PrintHeading(HeadInfo h) { char buf[MAXSTRLEN]; if (h.isSource){ if (h.isAudio) strcpy(buf,"Source: Direct Audio"); else sprintf(buf,"Source: %s", h.name); }else strcpy(buf,"Target"); PrBar(buf); printf(" Sample Bytes: %-7d", h.sampSize); if (barwidth < 60 ) printf("\n"); printf(" Sample Kind: %s\n", ParmKind2Str(h.kind,buf)); printf(" Num Comps: %-7d", h.numComps); if (barwidth < 60 ) printf("\n"); printf(" Sample Period: %.1f us\n", h.period/10.0); if (!h.isAudio) { printf(" Num Samples: %-7ld", h.nSamples); if (barwidth < 60 ) printf("\n"); printf(" File Format: %s\n", Format2Str(h.fmt)); } } /* PrintWaveLine: print line of waveform samples */ void PrintWaveLine(short *data, int nItems, long idx) { int i; if (!rawOut) printf("%5ld: ",idx); for (i=0; i<nItems; i++) printf("%7d",*data++); printf("\n"); } /* PrintRawVec: print vector components */ void PrintRawVec(Vector v) { int i; for (i=1; i<=VectorSize(v); i++) printf("%e ",v[i]); printf("\n");
int audio_thread(void *param) { SND_EVENT evnt; int buffsize; int samples; int err; char *errstr; int active; if((err = CreateBuffer(snd_format|PCM_RING,0, &hBuff)) != 0) { errstr = "Cannot create sound buffer\n\r"; goto exit_whith_error; }; SetVolume(hBuff,-900,-900); if((err = GetBufferSize(hBuff, &buffsize)) != 0) { errstr = "Cannot get buffer size\n\r"; goto exit_whith_error; }; __sync_or_and_fetch(&threads_running,AUDIO_THREAD); resampler_size = buffsize = buffsize/2; samples = buffsize/4; while( player_state != CLOSED) { uint32_t offset; double event_stamp, wait_stamp; int too_late = 0; switch(sound_state) { case PREPARE: mutex_lock(&astream.lock); if(astream.count < buffsize*2) { memset(astream.buffer+astream.count, 0, buffsize*2-astream.count); astream.count = buffsize*2; }; SetBuffer(hBuff, astream.buffer, 0, buffsize*2); astream.count -= buffsize*2; if(astream.count) memcpy(astream.buffer, astream.buffer+buffsize*2, astream.count); mutex_unlock(&astream.lock); SetTimeBase(hBuff, audio_base); case PAUSE_2_PLAY: GetTimeStamp(hBuff, &last_time_stamp); // printf("last audio time stamp %f\n", last_time_stamp); if((err = PlayBuffer(hBuff, 0)) !=0 ) { errstr = "Cannot play buffer\n\r"; goto exit_whith_error; }; active = 1; sync_audio(hBuff, buffsize); sound_state = PLAY; // printf("render: set audio latency to %f\n", audio_delta); /* breaktrough */ case PLAY: GetNotify(&evnt); if(evnt.code != 0xFF000001) { printf("invalid event code %d\n\r", evnt.code); continue; } if(evnt.stream != hBuff) { printf("invalid stream %x hBuff= %x\n\r", evnt.stream, hBuff); continue; }; offset = evnt.offset; mutex_lock(&astream.lock); if(astream.count < buffsize) { memset(astream.buffer+astream.count, 0, buffsize-astream.count); astream.count = buffsize; }; SetBuffer(hBuff, astream.buffer, offset, buffsize); { double val = 0; int16_t *src = (int16_t*)astream.buffer; int samples = buffsize/2; int i; for(i = 0, val = 0; i < samples/2; i++, src++) if(val < abs(*src)) val= abs(*src); // * *src; sound_level_0 = val; //sqrt(val / (samples/2)); for(i = 0, val = 0; i < samples/2; i++, src++) if(val < abs(*src)) val= abs(*src); // * *src; sound_level_1 = val; //sqrt(val / (samples/2)); // printf("%d\n", sound_level); }; samples_written+= buffsize/4; astream.count -= buffsize; if(astream.count) memcpy(astream.buffer, astream.buffer+buffsize, astream.count); mutex_unlock(&astream.lock); break; case PLAY_2_STOP: if( active ) { ResetBuffer(hBuff, SND_RESET_ALL); audio_base = -1.0; active = 0; } sound_state = STOP; break; case PLAY_2_PAUSE: if( active ) { StopBuffer(hBuff); }; sound_state = PAUSE; case PAUSE: case STOP: delay(1); }; } __sync_and_and_fetch(&threads_running,~AUDIO_THREAD); StopBuffer(hBuff); DestroyBuffer(hBuff); return 0; exit_whith_error: printf(errstr); return -1; };