// 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;
}
