Ejemplo n.º 1
0
static snd_pcm_sframes_t snd_pcm_file_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
{
	snd_pcm_file_t *file = pcm->private_data;
	snd_pcm_channel_area_t areas[pcm->channels];
	snd_pcm_sframes_t n = snd_pcm_writen(file->gen.slave, bufs, size);
	if (n > 0) {
		snd_pcm_areas_from_bufs(pcm, areas, bufs);
		snd_pcm_file_add_frames(pcm, areas, 0, n);
	}
	return n;
}
Ejemplo n.º 2
0
/* locking */
static snd_pcm_sframes_t snd_pcm_file_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)
{
	snd_pcm_file_t *file = pcm->private_data;
	snd_pcm_channel_area_t areas[pcm->channels];
	snd_pcm_sframes_t n = _snd_pcm_writei(file->gen.slave, buffer, size);
	if (n > 0) {
		snd_pcm_areas_from_buf(pcm, areas, (void*) buffer);
		__snd_pcm_lock(pcm);
		snd_pcm_file_add_frames(pcm, areas, 0, n);
		__snd_pcm_unlock(pcm);
	}
	return n;
}
Ejemplo n.º 3
0
static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm,
					          snd_pcm_uframes_t offset,
						  snd_pcm_uframes_t size)
{
	snd_pcm_file_t *file = pcm->private_data;
	snd_pcm_uframes_t ofs;
	snd_pcm_uframes_t siz = size;
	const snd_pcm_channel_area_t *areas;
	snd_pcm_sframes_t result;

	snd_pcm_mmap_begin(file->gen.slave, &areas, &ofs, &siz);
	assert(ofs == offset && siz == size);
	result = snd_pcm_mmap_commit(file->gen.slave, ofs, siz);
	if (result > 0)
		snd_pcm_file_add_frames(pcm, areas, ofs, result);
	return result;
}
Ejemplo n.º 4
0
static snd_pcm_sframes_t snd_pcm_file_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
{
	snd_pcm_file_t *file = pcm->private_data;
	snd_pcm_channel_area_t areas[pcm->channels];
	snd_pcm_sframes_t n;

	if (file->ifd >= 0) {
		SNDERR("DEBUG: Noninterleaved read not yet implemented.\n");
		return 0;	/* TODO: Noninterleaved read */
	}

	n = snd_pcm_readn(file->gen.slave, bufs, size);
	if (n > 0) {
		snd_pcm_areas_from_bufs(pcm, areas, bufs);
		snd_pcm_file_add_frames(pcm, areas, 0, n);
	}
	return n;
}
Ejemplo n.º 5
0
static snd_pcm_sframes_t snd_pcm_file_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
{
	snd_pcm_file_t *file = pcm->private_data;
	snd_pcm_channel_area_t areas[pcm->channels];
	snd_pcm_sframes_t n;

	n = snd_pcm_readi(file->gen.slave, buffer, size);
	if (n <= 0)
		return n;
	if (file->ifd >= 0) {
		n = read(file->ifd, buffer, n * pcm->frame_bits / 8);
		if (n < 0)
			return n;
		return n * 8 / pcm->frame_bits;
	}
	snd_pcm_areas_from_buf(pcm, areas, buffer);
	snd_pcm_file_add_frames(pcm, areas, 0, n);
	return n;
}
Ejemplo n.º 6
0
static snd_pcm_sframes_t snd_pcm_file_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
{
	snd_pcm_file_t *file = pcm->private_data;
	snd_pcm_channel_area_t areas[pcm->channels];
	snd_pcm_sframes_t n /* , bytesn */;

	if (file->ifd >= 0) {
		n = /* bytesn = */ read(file->ifd, buffer, size * pcm->frame_bits / 8);
		if (n > 0)
			n = n * 8 / pcm->frame_bits;
		/* SNDERR("DEBUG: channels = %d, sample_bits = %d, frame_bits = %d, bytes = %d, frames = %d",
		        pcm->channels, pcm->sample_bits, pcm->frame_bits, bytesn, n); */
	} else {
		n = snd_pcm_readi(file->gen.slave, buffer, size);
		if (n > 0) {
			snd_pcm_areas_from_buf(pcm, areas, buffer);
			snd_pcm_file_add_frames(pcm, areas, 0, n);
		}
	}
	return n;
}