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https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-12-15 08:56:38 -05:00
alsa: rework process function to support planar formats
This commit is contained in:
Wim Taymans
parent
bfc91c27a6
commit
64ee110356
1 changed files with 72 additions and 137 deletions
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@ -176,157 +176,95 @@ static snd_pcm_sframes_t snd_pcm_pipewire_pointer(snd_pcm_ioplug_t *io)
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}
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}
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static int
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static int
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snd_pcm_pipewire_process_playback(snd_pcm_pipewire_t *pw, struct pw_buffer *b, snd_pcm_uframes_t *hw_avail)
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snd_pcm_pipewire_process(snd_pcm_pipewire_t *pw, struct pw_buffer *b, snd_pcm_uframes_t *hw_avail)
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{
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{
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snd_pcm_ioplug_t *io = &pw->io;
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snd_pcm_ioplug_t *io = &pw->io;
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const snd_pcm_channel_area_t *areas;
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snd_pcm_channel_area_t *pwareas;
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snd_pcm_channel_area_t *pwareas;
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snd_pcm_uframes_t xfer = 0;
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snd_pcm_uframes_t xfer = 0;
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unsigned int channel, bps, bpf;
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snd_pcm_uframes_t nframes;
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snd_pcm_uframes_t nframes;
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uint32_t offset, index = 0, nbytes, avail, maxsize;
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unsigned int channel;
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int32_t filled;
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void *ptr;
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struct spa_data *d;
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bps = io->channels * pw->sample_bits;
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bpf = bps / 8;
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pwareas = alloca(io->channels * sizeof(snd_pcm_channel_area_t));
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d = b->buffer->datas;
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maxsize = d[0].maxsize;
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filled = 0;
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index = 0;
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avail = maxsize - filled;
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avail = SPA_MIN(avail, pw->min_avail * bpf);
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avail = SPA_MIN(avail, *hw_avail * bpf);
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do {
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offset = index % maxsize;
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nbytes = SPA_MIN(avail, maxsize - offset);
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ptr = SPA_MEMBER(d[0].data, offset, void);
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nframes = nbytes / bpf;
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pw_log_trace(NAME" %p: %d %d %lu %d %d %p %d", pw, nbytes, avail, nframes, filled, offset, ptr, io->state);
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for (channel = 0; channel < io->channels; channel++) {
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pwareas[channel].addr = ptr;
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pwareas[channel].first = channel * pw->sample_bits;
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pwareas[channel].step = bps;
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}
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if (io->state != SND_PCM_STATE_RUNNING && io->state != SND_PCM_STATE_DRAINING) {
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pw_log_trace(NAME" %p: silence %lu frames %d", pw, nframes, io->state);
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for (channel = 0; channel < io->channels; channel++)
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snd_pcm_area_silence(&pwareas[channel], 0, nframes, io->format);
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goto done;
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}
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areas = snd_pcm_ioplug_mmap_areas(io);
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xfer = 0;
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while (xfer < nframes) {
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snd_pcm_uframes_t frames = nframes - xfer;
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snd_pcm_uframes_t offset = pw->hw_ptr % io->buffer_size;
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snd_pcm_uframes_t cont = io->buffer_size - offset;
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if (cont < frames)
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frames = cont;
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snd_pcm_areas_copy(pwareas, xfer,
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areas, offset,
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io->channels, frames, io->format);
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pw->hw_ptr += frames;
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if (pw->hw_ptr > pw->boundary)
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pw->hw_ptr -= pw->boundary;
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xfer += frames;
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}
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*hw_avail -= xfer;
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done:
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index += nbytes;
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avail -= nbytes;
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} while (avail > 0);
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d[0].chunk->offset = 0;
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d[0].chunk->size = index;
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d[0].chunk->stride = 0;
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return 0;
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}
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static int
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snd_pcm_pipewire_process_record(snd_pcm_pipewire_t *pw, struct pw_buffer *b, snd_pcm_uframes_t *hw_avail)
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{
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snd_pcm_ioplug_t *io = &pw->io;
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const snd_pcm_channel_area_t *areas;
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snd_pcm_channel_area_t *pwareas;
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snd_pcm_uframes_t xfer = 0;
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unsigned int channel, bps, bpf;
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snd_pcm_uframes_t nframes;
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uint32_t offset, index = 0, nbytes, avail, maxsize;
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struct spa_data *d;
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struct spa_data *d;
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void *ptr;
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void *ptr;
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bps = io->channels * pw->sample_bits;
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d = b->buffer->datas;
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bpf = bps / 8;
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pwareas = alloca(io->channels * sizeof(snd_pcm_channel_area_t));
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pwareas = alloca(io->channels * sizeof(snd_pcm_channel_area_t));
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d = b->buffer->datas;
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if (io->stream == SND_PCM_STREAM_PLAYBACK) {
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nframes = d[0].maxsize - SPA_MIN(d[0].maxsize, d[0].chunk->offset);
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nframes /= pw->stride;
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nframes = SPA_MIN(nframes, pw->min_avail);
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} else {
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nframes = d[0].chunk->size / pw->stride;
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}
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nframes = SPA_MIN(nframes, *hw_avail);
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maxsize = d[0].chunk->size;
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if (pw->blocks == 1) {
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avail = SPA_MIN(maxsize, *hw_avail * bpf);
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ptr = SPA_MEMBER(d[0].data, d[0].chunk->offset, void);
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index = d[0].chunk->offset;
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for (channel = 0; channel < io->channels; channel++) {
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pwareas[channel].addr = ptr;
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if (avail < maxsize)
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pwareas[channel].first = channel * pw->sample_bits;
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pw->xrun_detected = true;
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pwareas[channel].step = io->channels * pw->sample_bits;
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}
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do {
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if (io->stream == SND_PCM_STREAM_PLAYBACK)
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avail = SPA_MIN(avail, pw->min_avail * bpf);
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d[0].chunk->size = nframes * pw->stride;
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offset = index % maxsize;
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} else {
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nbytes = SPA_MIN(avail, maxsize - offset);
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for (channel = 0; channel < io->channels; channel++) {
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ptr = SPA_MEMBER(d[0].data, offset, void);
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ptr = SPA_MEMBER(d[channel].data, d[channel].chunk->offset, void);
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pwareas[channel].addr = ptr;
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pw_log_trace(NAME" %p: %d %ld %d %d %d %p", pw, maxsize, *hw_avail, nbytes, avail, offset, ptr);
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pwareas[channel].first = 0;
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nframes = nbytes / bpf;
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pwareas[channel].step = pw->sample_bits;
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if (io->stream == SND_PCM_STREAM_PLAYBACK)
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for (channel = 0; channel < io->channels; channel++) {
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d[channel].chunk->size = nframes * pw->stride;
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pwareas[channel].addr = ptr;
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}
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pwareas[channel].first = channel * pw->sample_bits;
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pwareas[channel].step = bps;
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}
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}
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areas = snd_pcm_ioplug_mmap_areas(io);
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if (io->state == SND_PCM_STATE_RUNNING ||
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io->state == SND_PCM_STATE_DRAINING) {
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snd_pcm_uframes_t hw_ptr = pw->hw_ptr;
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if (*hw_avail > 0) {
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const snd_pcm_channel_area_t *areas = snd_pcm_ioplug_mmap_areas(io);
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const snd_pcm_uframes_t offset = hw_ptr % io->buffer_size;
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xfer = 0;
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xfer = nframes;
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while (xfer < nframes) {
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if (xfer > *hw_avail)
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snd_pcm_uframes_t frames = nframes - xfer;
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xfer = *hw_avail;
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snd_pcm_uframes_t offset = pw->hw_ptr % io->buffer_size;
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snd_pcm_uframes_t cont = io->buffer_size - offset;
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if (cont < frames)
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if (io->stream == SND_PCM_STREAM_PLAYBACK)
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frames = cont;
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snd_pcm_areas_copy_wrap(pwareas, 0, nframes,
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areas, offset,
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io->buffer_size,
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io->channels, xfer,
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io->format);
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else
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snd_pcm_areas_copy_wrap(areas, offset,
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io->buffer_size,
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pwareas, 0, nframes,
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io->channels, xfer,
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io->format);
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snd_pcm_areas_copy(areas, offset,
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hw_ptr += xfer;
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pwareas, xfer,
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if (hw_ptr > pw->boundary)
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io->channels, frames, io->format);
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hw_ptr -= pw->boundary;
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pw->hw_ptr = hw_ptr;
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}
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}
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/* check if requested frames were copied */
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if (xfer < nframes) {
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/* always fill the not yet written JACK buffer with silence */
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if (io->stream == SND_PCM_STREAM_PLAYBACK) {
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const snd_pcm_uframes_t frames = nframes - xfer;
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pw->hw_ptr += frames;
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snd_pcm_areas_silence(pwareas, xfer, io->channels,
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if (pw->hw_ptr > pw->boundary)
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frames, io->format);
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pw->hw_ptr -= pw->boundary;
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xfer += frames;
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xfer += frames;
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}
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if (io->state == SND_PCM_STATE_RUNNING ||
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io->state == SND_PCM_STATE_DRAINING) {
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/* report Xrun to user application */
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pw->xrun_detected = true;
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}
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}
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}
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*hw_avail -= xfer;
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*hw_avail -= xfer;
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avail -= nbytes;
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index += nbytes;
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} while (avail > 0);
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return 0;
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return 0;
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}
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}
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@ -380,10 +318,7 @@ static void on_stream_process(void *data)
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if (b == NULL)
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if (b == NULL)
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return;
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return;
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if (io->stream == SND_PCM_STREAM_PLAYBACK)
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snd_pcm_pipewire_process(pw, b, &hw_avail);
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snd_pcm_pipewire_process_playback(pw, b, &hw_avail);
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else
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snd_pcm_pipewire_process_record(pw, b, &hw_avail);
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pw_stream_queue_buffer(pw->stream, b);
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pw_stream_queue_buffer(pw->stream, b);
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