ao_pcm, core: use new API in ao_pcm, change timing with it

Change ao_pcm to use the new audio output driver API and clean up some
of the code. Rewrite the logic controlling how playback timing works
when using -ao pcm. Deprecate the "fast" suboption; its only effect
now is to print a warning, but it's still accepted so that specifying
it is not an error.

Before, timing with -ao pcm and video enabled had two possible
modes. In the default mode playback speed was rather arbitrary - not
realtime, but not particularly fast. -ao pcm:fast tried to play back
at maximum video playback speed - mostly succeeding, but not quite
guaranteed to work in all cases. Now the default is to play at
realtime speed. The -benchmark option can now be used to get faster
playback (same as the video-only case). In the audio-only case
playback is always maximum speed.

1 files changed, 1 insertions, 0 deletions

diff --git a/libao2/audio_out.h b/libao2/audio_out.h
index c60819e545..fb62923297 100644
--- a/libao2/audio_out.h
+++ b/libao2/audio_out.h
@@ -72,6 +72,7 @@ struct ao {
     int buffersize;
     int pts;
     bool initialized;
+    bool untimed;
     const struct ao_driver *driver;
     void *priv;
 };