// Called after audio recorder fills a buffer with data, then we can read from this filled buffer static void recorderCallback(SLAndroidSimpleBufferQueueItf caller __unused, void *context) { sles_data *pSles = (sles_data*) context; if (pSles != NULL) { collectRecorderBufferPeriod(pSles); //__android_log_print(ANDROID_LOG_INFO, "sles_jni", "in the recordercallback"); SLresult result; pthread_mutex_lock(&(pSles->mutex)); //ee SLES_PRINTF("<R"); // We should only be called when a recording buffer is done assert(pSles->rxFront <= pSles->rxBufCount); assert(pSles->rxRear <= pSles->rxBufCount); assert(pSles->rxFront != pSles->rxRear); char *buffer = pSles->rxBuffers[pSles->rxFront]; //pSles->rxBuffers stores the data recorded // Remove buffer from record queue if (++pSles->rxFront > pSles->rxBufCount) { pSles->rxFront = 0; } if (pSles->testType == TEST_TYPE_LATENCY) { ssize_t actual = audio_utils_fifo_write(&(pSles->fifo), buffer, (size_t) pSles->bufSizeInFrames); if (actual != (ssize_t) pSles->bufSizeInFrames) { write(1, "?", 1); } // This is called by a realtime (SCHED_FIFO) thread, // and it is unsafe to do I/O as it could block for unbounded time. // Flash filesystem is especially notorious for blocking. if (pSles->fifo2Buffer != NULL) { actual = audio_utils_fifo_write(&(pSles->fifo2), buffer, (size_t) pSles->bufSizeInFrames); if (actual != (ssize_t) pSles->bufSizeInFrames) { write(1, "?", 1); } } } else if (pSles->testType == TEST_TYPE_BUFFER_PERIOD) { if (pSles->fifo2Buffer != NULL) { ssize_t actual = byteBuffer_write(pSles, buffer, (size_t) pSles->bufSizeInFrames); //FIXME should log errors using other methods instead of printing to terminal if (actual != (ssize_t) pSles->bufSizeInFrames) { write(1, "?", 1); } } } // Enqueue this same buffer for the recorder to fill again. result = (*(pSles->recorderBufferQueue))->Enqueue(pSles->recorderBufferQueue, buffer, pSles->bufSizeInBytes); //__android_log_print(ANDROID_LOG_INFO, "recorderCallback", "recorder buffer size: %i", // pSles->bufSizeInBytes); ASSERT_EQ(SL_RESULT_SUCCESS, result); // Update our model of the record queue SLuint32 rxRearNext = pSles->rxRear + 1; if (rxRearNext > pSles->rxBufCount) { rxRearNext = 0; } assert(rxRearNext != pSles->rxFront); pSles->rxBuffers[pSles->rxRear] = buffer; pSles->rxRear = rxRearNext; //ee SLES_PRINTF("r>"); pthread_mutex_unlock(&(pSles->mutex)); } //pSles not null }
int main(int argc, char **argv) { size_t frameCount = 256; size_t maxFramesPerRead = 1; size_t maxFramesPerWrite = 1; int i; for (i = 1; i < argc; i++) { char *arg = argv[i]; if (arg[0] != '-') break; switch (arg[1]) { case 'c': // FIFO frame count frameCount = atoi(&arg[2]); break; case 'r': // maximum frame count per read from FIFO maxFramesPerRead = atoi(&arg[2]); break; case 'w': // maximum frame count per write to FIFO maxFramesPerWrite = atoi(&arg[2]); break; default: fprintf(stderr, "%s: unknown option %s\n", argv[0], arg); goto usage; } } if (argc - i != 2) { usage: fprintf(stderr, "usage: %s [-c#] in.wav out.wav\n", argv[0]); return EXIT_FAILURE; } char *inputFile = argv[i]; char *outputFile = argv[i+1]; SF_INFO sfinfoin; memset(&sfinfoin, 0, sizeof(sfinfoin)); SNDFILE *sfin = sf_open(inputFile, SFM_READ, &sfinfoin); if (sfin == NULL) { perror(inputFile); return EXIT_FAILURE; } // sf_readf_short() does conversion, so not strictly necessary to check the file format. // But I want to do "cmp" on input and output files afterwards, // and it is easier if they are all the same format. // Enforcing that everything is 16-bit is convenient for this. if ((sfinfoin.format & (SF_FORMAT_TYPEMASK | SF_FORMAT_SUBMASK)) != (SF_FORMAT_WAV | SF_FORMAT_PCM_16)) { fprintf(stderr, "%s: unsupported format\n", inputFile); sf_close(sfin); return EXIT_FAILURE; } size_t frameSize = sizeof(short) * sfinfoin.channels; short *inputBuffer = new short[sfinfoin.frames * sfinfoin.channels]; sf_count_t actualRead = sf_readf_short(sfin, inputBuffer, sfinfoin.frames); if (actualRead != sfinfoin.frames) { fprintf(stderr, "%s: unexpected EOF or error\n", inputFile); sf_close(sfin); return EXIT_FAILURE; } sf_close(sfin); short *outputBuffer = new short[sfinfoin.frames * sfinfoin.channels]; size_t framesWritten = 0; size_t framesRead = 0; struct audio_utils_fifo fifo; short *fifoBuffer = new short[frameCount * sfinfoin.channels]; audio_utils_fifo_init(&fifo, frameCount, frameSize, fifoBuffer); int fifoWriteCount = 0, fifoReadCount = 0; int fifoFillLevel = 0, minFillLevel = INT_MAX, maxFillLevel = INT_MIN; for (;;) { size_t framesToWrite = sfinfoin.frames - framesWritten; size_t framesToRead = sfinfoin.frames - framesRead; if (framesToWrite == 0 && framesToRead == 0) { break; } if (framesToWrite > maxFramesPerWrite) { framesToWrite = maxFramesPerWrite; } framesToWrite = rand() % (framesToWrite + 1); ssize_t actualWritten = audio_utils_fifo_write(&fifo, &inputBuffer[framesWritten * sfinfoin.channels], framesToWrite); if (actualWritten < 0 || (size_t) actualWritten > framesToWrite) { fprintf(stderr, "write to FIFO failed\n"); break; } framesWritten += actualWritten; if (actualWritten > 0) { fifoWriteCount++; } fifoFillLevel += actualWritten; if (fifoFillLevel > maxFillLevel) { maxFillLevel = fifoFillLevel; if (maxFillLevel > (int) frameCount) abort(); } if (framesToRead > maxFramesPerRead) { framesToRead = maxFramesPerRead; } framesToRead = rand() % (framesToRead + 1); ssize_t actualRead = audio_utils_fifo_read(&fifo, &outputBuffer[framesRead * sfinfoin.channels], framesToRead); if (actualRead < 0 || (size_t) actualRead > framesToRead) { fprintf(stderr, "read from FIFO failed\n"); break; } framesRead += actualRead; if (actualRead > 0) { fifoReadCount++; } fifoFillLevel -= actualRead; if (fifoFillLevel < minFillLevel) { minFillLevel = fifoFillLevel; if (minFillLevel < 0) abort(); } } printf("FIFO non-empty writes: %d, non-empty reads: %d\n", fifoWriteCount, fifoReadCount); printf("fill=%d, min=%d, max=%d\n", fifoFillLevel, minFillLevel, maxFillLevel); audio_utils_fifo_deinit(&fifo); delete[] fifoBuffer; SF_INFO sfinfoout; memset(&sfinfoout, 0, sizeof(sfinfoout)); sfinfoout.samplerate = sfinfoin.samplerate; sfinfoout.channels = sfinfoin.channels; sfinfoout.format = sfinfoin.format; SNDFILE *sfout = sf_open(outputFile, SFM_WRITE, &sfinfoout); if (sfout == NULL) { perror(outputFile); return EXIT_FAILURE; } sf_count_t actualWritten = sf_writef_short(sfout, outputBuffer, framesRead); delete[] inputBuffer; delete[] outputBuffer; delete[] fifoBuffer; if (actualWritten != (sf_count_t) framesRead) { fprintf(stderr, "%s: unexpected error\n", outputFile); sf_close(sfout); return EXIT_FAILURE; } sf_close(sfout); return EXIT_SUCCESS; }