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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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28
src/pulsecore/sink-input.c
View file

@ -367,6 +367,19 @@ int pa_sink_input_new(
pa_assert(pa_sample_spec_valid(&data->sample_spec));
pa_assert(pa_channel_map_valid(&data->channel_map));
if (!(data->flags & PA_SINK_INPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&data->sample_spec, &data->sink->sample_spec)) {
/* try to change sink rate. This is done before the FIXATE hook since
module-suspend-on-idle can resume a sink */
pa_log_info("Trying to change sample rate");
if (pa_sink_update_rate(data->sink, data->sample_spec.rate, pa_sink_input_new_data_is_passthrough(data)) == TRUE)
pa_log_info("Rate changed to %u kHz",
data->sink->sample_spec.rate);
else
pa_log_info("Resampling enabled to %u kHz", data->sink->sample_spec.rate);
}
/* Due to the fixing of the sample spec the volume might not match anymore */
pa_cvolume_remap(&data->volume, &original_cm, &data->channel_map);
@ -1605,6 +1618,21 @@ int pa_sink_input_finish_move(pa_sink_input *i, pa_sink *dest, pa_bool_t save) {
return -PA_ERR_NOTSUPPORTED;
}
if (!(i->flags & PA_SINK_INPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&i->sample_spec, &dest->sample_spec)) {
/* try to change dest sink rate if possible without glitches.
module-suspend-on-idle resumes destination sink with
SINK_INPUT_MOVE_FINISH hook */
pa_log_info("Trying to change sample rate");
if (pa_sink_update_rate(dest, i->sample_spec.rate, pa_sink_input_is_passthrough(i)) == 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 (i->thread_info.resampler &&
pa_sample_spec_equal(pa_resampler_output_sample_spec(i->thread_info.resampler), &dest->sample_spec) &&
pa_channel_map_equal(pa_resampler_output_channel_map(i->thread_info.resampler), &dest->channel_map))