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alsa-pcm: also follow resampler insize when resampling

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Use the input size of the resampler as the amount of samples to
read when we are resampling.
This commit is contained in:
Wim Taymans 2020-07-27 15:56:20 +02:00
parent 4a8afe389c
commit 8f3771a56c
2 changed files with 8 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

12
spa/plugins/alsa/alsa-pcm.c
View file

@ -688,7 +688,7 @@ static int get_status(struct state *state, snd_pcm_uframes_t *delay, snd_pcm_ufr
*target = state->last_threshold;
if (state->matching && state->rate_match) {
if (state->resample && state->rate_match) {
state->delay = state->rate_match->delay;
state->read_size = state->rate_match->size;
/* We try to compensate for the latency introduced by rate matching
@ -1059,6 +1059,7 @@ int spa_alsa_read(struct state *state, snd_pcm_uframes_t silence)
if (frames == 0)
frames = state->threshold + state->delay;
to_read = state->buffer_frames;
if ((res = snd_pcm_mmap_begin(hndl, &my_areas, &offset, &to_read)) < 0) {
spa_log_error(state->log, NAME" %p: snd_pcm_mmap_begin error: %s",
@ -1066,12 +1067,12 @@ int spa_alsa_read(struct state *state, snd_pcm_uframes_t silence)
return res;
}
spa_log_trace_fp(state->log, NAME" %p: begin %ld %ld %ld %d", state,
spa_log_trace_fp(state->log, NAME" %p: begin offs:%ld frames:%ld to_read:%ld thres:%d", state,
offset, frames, to_read, state->threshold);
read = push_frames(state, my_areas, offset, frames, state->delay);
spa_log_trace_fp(state->log, NAME" %p: commit %ld %ld %"PRIi64, state,
spa_log_trace_fp(state->log, NAME" %p: commit offs:%ld read:%ld count:%"PRIi64, state,
offset, read, state->sample_count);
total_read += read;
@ -1259,15 +1260,16 @@ int spa_alsa_start(struct state *state)
state->rate_denom = state->rate;
}
state->resample = (state->rate != state->rate_denom) || state->matching;
state->threshold = (state->duration * state->rate + state->rate_denom-1) / state->rate_denom;
state->last_threshold = state->threshold;
init_loop(state);
state->safety = 0.0;
spa_log_debug(state->log, NAME" %p: start %d duration:%d rate:%d follower:%d match:%d",
spa_log_debug(state->log, NAME" %p: start %d duration:%d rate:%d follower:%d match:%d resample:%d",
state, state->threshold, state->duration, state->rate_denom,
state->following, state->matching);
state->following, state->matching, state->resample);
CHECK(set_swparams(state), "swparams");
if (SPA_UNLIKELY(spa_log_level_enabled(state->log, SPA_LOG_LEVEL_DEBUG)))

1
spa/plugins/alsa/alsa-pcm.h
View file

@ -144,6 +144,7 @@ struct state {
unsigned int alsa_recovering:1;
unsigned int following:1;
unsigned int matching:1;
unsigned int resample:1;
int64_t sample_count;