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pcm: implement pcm_switch_sink

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Change-Id: Iace01c2e97950cc794f3cf755dc358da6f3daa7f
This commit is contained in:
mojyack 2025-12-19 13:28:44 +09:00
parent 8ac866a749
commit be4b0591ee
2 changed files with 35 additions and 0 deletions
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1
firmware/export/pcm.h
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@ -64,6 +64,7 @@ bool pcm_is_initialized(void);
enum pcm_sink_ids pcm_current_sink(void);
const struct pcm_sink_caps* pcm_sink_caps(enum pcm_sink_ids sink);
bool pcm_switch_sink(enum pcm_sink_ids sink);
/* shortcut for plugins */
const struct pcm_sink_caps* pcm_current_sink_caps(void);

34
firmware/pcm.c
View file

@ -291,6 +291,40 @@ const struct pcm_sink_caps* pcm_current_sink_caps(void)
return pcm_sink_caps(pcm_current_sink());
}
bool pcm_switch_sink(enum pcm_sink_ids sink)
{
logf("pcm_switch_sink %d to %d", cur_sink, sink);
if(sink >= ARRAYLEN(sinks)) {
return false;
}
if(cur_sink == sink) {
return true;
}
/* save current sink before switching */
struct pcm_sink* old_sink = sinks[cur_sink];
/* update sink index */
cur_sink = sink;
/* synchronize frequency */
unsigned long cur_sampr = old_sink->caps.samprs[old_sink->pending_freq];
pcm_set_frequency(cur_sampr);
pcm_apply_settings();
/* when playing, continue playing on new sink */
if(pcm_playing) {
old_sink->ops.stop();
/* need more */
const void *start;
size_t size;
if(pcm_get_more_int(&start, &size)) {
pcm_play_dma_start_int(start, size);
} else {
pcm_play_stop_int();
}
}
return true;
}
void pcm_play_data(pcm_play_callback_type get_more,
pcm_status_callback_type status_cb,
const void *start, size_t size)