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sink,source: support for rate update

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Avoid resampling or use integer resampling when supported by the
sinks/sources

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
This commit is contained in:
Pierre-Louis Bossart 2011-08-02 18:37:28 -05:00 • committed by Arun Raghavan
parent 5bcfd2b630
commit f0ec495938
7 changed files with 219 additions and 0 deletions
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24
src/pulsecore/source-output.c
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@ -348,6 +348,15 @@ int pa_source_output_new(
/* Due to the fixing of the sample spec the volume might not match anymore */
pa_cvolume_remap(&data->volume, &original_cm, &data->channel_map);
if (!(data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec)){
/* try to change source rate. This is done before the FIXATE hook since
module-suspend-on-idle can resume a source */
pa_log_info("Trying to change sample rate");
pa_source_update_rate(data->source, data->sample_spec.rate);
}
if (data->resample_method == PA_RESAMPLER_INVALID)
data->resample_method = core->resample_method;
@ -1385,6 +1394,21 @@ int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t
return -PA_ERR_NOTSUPPORTED;
}
if (!(o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec)){
/* try to change dest sink rate if possible without glitches.
module-suspend-on-idle resumes destination source with
SOURCE_OUTPUT_MOVE_FINISH hook */
pa_log_info("Trying to change sample rate");
if (pa_source_update_rate(dest, o->sample_spec.rate) == TRUE)
pa_log_info("Rate changed to %u kHz",
dest->sample_spec.rate);
else
pa_log_info("Resampling enabled to %u kHz",
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))