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sink-input,source-output: Add an update_rate() function

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This factors out the resampler updating code from finish_move() and
makes a separate function for use from other points.
This commit is contained in:
Arun Raghavan 2011-11-06 18:20:01 +05:30
parent 75573435a0
commit 8616f82a67
4 changed files with 136 additions and 105 deletions
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118
src/pulsecore/source-output.c
View file

@ -1376,8 +1376,6 @@ static void update_volume_due_to_moving(pa_source_output *o, pa_source *dest) {
/* Called from main context */
int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t save) {
pa_resampler *new_resampler;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
@ -1413,34 +1411,6 @@ int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t
dest->sample_spec.rate);
}
if (o->thread_info.resampler &&
pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &dest->sample_spec) &&
pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &dest->channel_map))
/* Try to reuse the old resampler if possible */
new_resampler = o->thread_info.resampler;
else if (!pa_source_output_is_passthrough(o) &&
((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) ||
!pa_channel_map_equal(&o->channel_map, &dest->channel_map))) {
/* Okay, we need a new resampler for the new source */
if (!(new_resampler = pa_resampler_new(
o->core->mempool,
&dest->sample_spec, &dest->channel_map,
&o->sample_spec, &o->channel_map,
o->requested_resample_method,
((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
} else
new_resampler = NULL;
if (o->moving)
o->moving(o, dest);
@ -1453,27 +1423,7 @@ int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t
if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
o->source->n_corked++;
/* Replace resampler */
if (new_resampler != o->thread_info.resampler) {
if (o->thread_info.resampler)
pa_resampler_free(o->thread_info.resampler);
o->thread_info.resampler = new_resampler;
pa_memblockq_free(o->thread_info.delay_memblockq);
o->thread_info.delay_memblockq = pa_memblockq_new(
"source output delay_memblockq",
0,
MEMBLOCKQ_MAXLENGTH,
0,
&o->source->sample_spec,
0,
1,
0,
&o->source->silence);
o->actual_resample_method = new_resampler ? pa_resampler_get_method(new_resampler) : PA_RESAMPLER_INVALID;
}
pa_source_output_update_rate(o);
pa_source_update_status(dest);
@ -1646,3 +1596,69 @@ finish:
if (pl)
pa_proplist_free(pl);
}
/* Called from main context */
/* Updates the source output's resampler with whatever the current source
* requires -- useful when the underlying source's rate might have changed */
int pa_source_output_update_rate(pa_source_output *o) {
pa_resampler *new_resampler;
char *memblockq_name;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
if (o->thread_info.resampler &&
pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &o->source->sample_spec) &&
pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &o->source->channel_map))
new_resampler = o->thread_info.resampler;
else if (!pa_source_output_is_passthrough(o) &&
((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&o->sample_spec, &o->source->sample_spec) ||
!pa_channel_map_equal(&o->channel_map, &o->source->channel_map))) {
new_resampler = pa_resampler_new(o->core->mempool,
&o->source->sample_spec, &o->source->channel_map,
&o->sample_spec, &o->channel_map,
o->requested_resample_method,
((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0));
if (!new_resampler) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
} else
new_resampler = NULL;
if (new_resampler == o->thread_info.resampler)
return 0;
if (o->thread_info.resampler)
pa_resampler_free(o->thread_info.resampler);
o->thread_info.resampler = new_resampler;
pa_memblockq_free(o->thread_info.delay_memblockq);
memblockq_name = pa_sprintf_malloc("source output delay_memblockq [%u]", o->index);
o->thread_info.delay_memblockq = pa_memblockq_new(
memblockq_name,
0,
MEMBLOCKQ_MAXLENGTH,
0,
&o->source->sample_spec,
0,
1,
0,
&o->source->silence);
pa_xfree(memblockq_name);
o->actual_resample_method = new_resampler ? pa_resampler_get_method(new_resampler) : PA_RESAMPLER_INVALID;
pa_log_debug("Updated resmpler for source output %d", o->index);
return 0;
}