From 6354a6b07dd3e0aee23e71ee2574754d620bdd09 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 8 Nov 2013 20:02:09 +0100
Subject: player: factor audio buffer clearing code

Note that the change in seek_reset is not entirely equivalent: we even
drop the remainder of buffered audio when seeking. This should be more
correct, because the whole point of the reset_ao parameter is to control
whether audio queued for output should be dropped or not.
---
 mpvcore/player/audio.c    | 17 +++++++++++++++++
 mpvcore/player/loadfile.c |  8 ++------
 mpvcore/player/mp_core.h  |  2 ++
 mpvcore/player/playloop.c | 11 ++++-------
 4 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/mpvcore/player/audio.c b/mpvcore/player/audio.c
index 2c3d044c41..a0c558f02a 100644
--- a/mpvcore/player/audio.c
+++ b/mpvcore/player/audio.c
@@ -421,3 +421,20 @@ int fill_audio_out_buffers(struct MPContext *mpctx, double endpts)
 
     return signal_eof ? -2 : -partial_fill;
 }
+
+// Drop data queued for output, or which the AO is currently outputting.
+void clear_audio_output_buffers(struct MPContext *mpctx)
+{
+    if (mpctx->ao) {
+        ao_reset(mpctx->ao);
+        mpctx->ao->buffer.len = 0;
+        mpctx->ao->buffer_playable_size = 0;
+    }
+}
+
+// Drop decoded data queued for filtering.
+void clear_audio_decode_buffers(struct MPContext *mpctx)
+{
+    if (mpctx->sh_audio)
+        mpctx->sh_audio->a_buffer_len = 0;
+}
diff --git a/mpvcore/player/loadfile.c b/mpvcore/player/loadfile.c
index 569532840c..a35da703ed 100644
--- a/mpvcore/player/loadfile.c
+++ b/mpvcore/player/loadfile.c
@@ -1292,12 +1292,8 @@ terminate_playback:  // don't jump here after ao/vo/getch initialization!
     if (mpctx->stop_play == KEEP_PLAYING)
         mpctx->stop_play = AT_END_OF_FILE;
 
-    // Drop audio left in the buffers
-    if (mpctx->stop_play != AT_END_OF_FILE && mpctx->ao) {
-        mpctx->ao->buffer_playable_size = 0;
-        mpctx->ao->buffer.len = 0;
-        ao_reset(mpctx->ao);
-    }
+    if (mpctx->stop_play != AT_END_OF_FILE)
+        clear_audio_output_buffers(mpctx);
 
     if (opts->position_save_on_quit && mpctx->stop_play == PT_QUIT)
         mp_write_watch_later_conf(mpctx);
diff --git a/mpvcore/player/mp_core.h b/mpvcore/player/mp_core.h
index 05909543f4..3f20f9ab2e 100644
--- a/mpvcore/player/mp_core.h
+++ b/mpvcore/player/mp_core.h
@@ -330,6 +330,8 @@ int reinit_audio_filters(struct MPContext *mpctx);
 double playing_audio_pts(struct MPContext *mpctx);
 int fill_audio_out_buffers(struct MPContext *mpctx, double endpts);
 double written_audio_pts(struct MPContext *mpctx);
+void clear_audio_output_buffers(struct MPContext *mpctx);
+void clear_audio_decode_buffers(struct MPContext *mpctx);
 
 // configfiles.c
 bool mp_parse_cfgfiles(struct MPContext *mpctx);
diff --git a/mpvcore/player/playloop.c b/mpvcore/player/playloop.c
index 6cd53214a2..9d5b4a5e25 100644
--- a/mpvcore/player/playloop.c
+++ b/mpvcore/player/playloop.c
@@ -185,9 +185,8 @@ static void seek_reset(struct MPContext *mpctx, bool reset_ao, bool reset_ac)
     if (mpctx->sh_audio && reset_ac) {
         resync_audio_stream(mpctx->sh_audio);
         if (reset_ao)
-            ao_reset(mpctx->ao);
-        mpctx->ao->buffer.len = mpctx->ao->buffer_playable_size;
-        mpctx->sh_audio->a_buffer_len = 0;
+            clear_audio_output_buffers(mpctx);
+        clear_audio_decode_buffers(mpctx);
     }
 
     reset_subtitles(mpctx);
@@ -256,10 +255,8 @@ static int mp_seek(MPContext *mpctx, struct seek_params seek,
             mpctx->stop_play = AT_END_OF_FILE;
             if (mpctx->sh_audio && !timeline_fallthrough) {
                 // Seek outside of the file -> clear audio from current position
-                ao_reset(mpctx->ao);
-                mpctx->sh_audio->a_buffer_len = 0;
-                mpctx->ao->buffer.len = 0;
-                mpctx->ao->buffer_playable_size = 0;
+                clear_audio_decode_buffers(mpctx);
+                clear_audio_output_buffers(mpctx);
             }
             return -1;
         }
-- 
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