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* audio_output: added method pause()Max Kellermann2008-09-291-0/+3
| | | | | | | | | | | | pause() puts the audio output into pause mode: if supported, it may perform a special action, which keeps the device open, but does not play anything. Output plugins like "shout" might want to play silence during pause, so their clients won't be disconnected. Plugins which do not support pausing will simply be closed, and have to be reopened when unpaused. This pach includes an implementation for the shout plugin, which sends silence chunks.
* audio_output: workaround for deadlockMax Kellermann2008-09-261-0/+9
| | | | | | | | During debugging, I found a deadlock between flushAudioBuffer() and the audio_output_task(): audio_output_task() didn't notice that there is a command, and flushAudioBuffer() waited forever in notify_wait(). I am not sure yet what is the real cause; work around this for now by waking up non-finished audio outputs in every iteration.
* output: semi-asynchronous playbackMax Kellermann2008-09-241-2/+2
| | | | | | | Send an output buffer to all output plugins at the same time, instead of waiting for each of them separately. Make several functions non-blocking, and introduce the new function audio_output_wait_all() to synchronize with all audio output threads.
* output: renamed the functions in output_control.cMax Kellermann2008-09-091-10/+10
| | | | Getting rid of CamcelCase, again.
* output: moved code from audioOutput.c to output_control.cMax Kellermann2008-09-091-0/+41
Similar to decoder_control.c, output_control.c will provide functions for controlling the output thread (which will be implemented later).