void write_depth_png_netstring(FILE *file) {
Buffer *buffer = Buffer_create();
Image *image = Image_create(320, 240);
Image_downsample(kinect_depth_image, image);
if (Image_get_png(image, buffer)) {
fprintf(file, "%lu:", buffer->size);
Buffer_write(buffer, file);
fputc(',', file);
}
Image_destroy(image);
Buffer_destroy(buffer);
}
// shipin from device (usually 512 frames at 44k1). this is asynchronous and
// runs (implicitly) in its own thread.
//
static OSStatus ioProcInput(AudioDeviceID device,
const AudioTimeStamp *currentTime,
const AudioBufferList *inputData,
const AudioTimeStamp *inputTime,
AudioBufferList *outputData, // io param
const AudioTimeStamp *outputTime,
void *context)
{
Stream *s= (Stream *)context;
Buffer *b= s->buffer;
int n= Buffer_free(b);
if (n >= inputData->mBuffers[0].mDataByteSize)
Buffer_write(b, inputData->mBuffers[0].mData, inputData->mBuffers[0].mDataByteSize);
if (Buffer_avail(b) >= s->imgBufSize)
ioProcSignal(s->semaphore); // restart SoundRecorder
return kAudioHardwareNoError;
}
// play (exactly) frameCount of samples (and no less, since the result is
// ignored).
//
static sqInt sound_PlaySamplesFromAtLength(sqInt frameCount, sqInt arrayIndex, sqInt startIndex)
{
if (output)
{
int byteCount= frameCount * SqueakFrameSize;
if (Buffer_free(output->buffer) >= byteCount)
{
Buffer_write(output->buffer,
pointerForOop(arrayIndex) + (startIndex * SqueakFrameSize),
byteCount);
return frameCount;
}
return 0;
}
success(false);
return 8192;
}
int sound_PlaySamplesFromAtLength(int frameCount, int arrayIndex, int startIndex)
{
if (output)
{
int byteCount= frameCount * SqueakFrameSize;
if (Buffer_free(output->buffer) >= byteCount)
{
Buffer_write(output->buffer,
(char *)arrayIndex + (startIndex * SqueakFrameSize),
byteCount);
return frameCount;
}
return 0;
}
success(false);
return 8192;
}
