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scheduler: add new scheduler

Browse source 
Make port status SPA_RESULT_OK until events changes it and data
processing can start
Only start pulling on ports in the OK state
Change we way we handle client-nodes, handle them async and continue
processing after they signaled completion
Add a new scheduler that decouples push and pull. It pushes to peer
elements when all inputs are provided and pulls from nodes when all
peer outputs are processed.
This commit is contained in:
Wim Taymans 2017-10-22 13:12:34 +02:00
parent 3315de187c
commit df59183a66
10 changed files with 188 additions and 37 deletions
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28
spa/plugins/alsa/alsa-utils.c
View file

@ -311,6 +311,22 @@ static int set_swparams(struct state *state)
return 0;
}
static inline void try_pull(struct state *state, snd_pcm_uframes_t frames, bool do_pull)
{
struct spa_port_io *io = state->io;
if (spa_list_is_empty(&state->ready) && do_pull) {
spa_log_trace(state->log, "alsa-util %p: %d", state, io->status);
if (io->status != SPA_RESULT_OK)
return;
io->status = SPA_RESULT_NEED_BUFFER;
io->range.offset = state->sample_count * state->frame_size;
io->range.min_size = state->threshold * state->frame_size;
io->range.max_size = frames * state->frame_size;
state->callbacks->need_input(state->callbacks_data);
}
}
static inline snd_pcm_uframes_t
pull_frames(struct state *state,
const snd_pcm_channel_area_t *my_areas,
@ -319,15 +335,9 @@ pull_frames(struct state *state,
bool do_pull)
{
snd_pcm_uframes_t total_frames = 0, to_write = frames;
struct spa_port_io *io = state->io;
if (spa_list_is_empty(&state->ready) && do_pull) {
io->status = SPA_RESULT_NEED_BUFFER;
io->range.offset = state->sample_count * state->frame_size;
io->range.min_size = state->threshold * state->frame_size;
io->range.max_size = frames * state->frame_size;
state->callbacks->need_input(state->callbacks_data);
}
try_pull(state, frames, do_pull);
while (!spa_list_is_empty(&state->ready) && to_write > 0) {
uint8_t *src, *dst;
size_t n_bytes, n_frames, size;
@ -374,6 +384,8 @@ pull_frames(struct state *state,
spa_log_trace(state->log, "alsa-util %p: reuse buffer %u", state, b->outbuf->id);
state->callbacks->reuse_buffer(state->callbacks_data, 0, b->outbuf->id);
state->ready_offset = 0;
try_pull(state, frames, do_pull);
}
total_frames += n_frames;
to_write -= n_frames;