From 2a08792ee821a6e7b69b10211556f7d1e00f68da Mon Sep 17 00:00:00 2001
From: gpoirier <gpoirier@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Wed, 13 Apr 2005 22:33:19 +0000
Subject: Online audio switching now supports Matroska too. Patch by Michael
 Behrisch

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15155 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libmpdemux/demux_mkv.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'libmpdemux/demux_mkv.c')

diff --git a/libmpdemux/demux_mkv.c b/libmpdemux/demux_mkv.c
index 89975c052a..6ea34ecd18 100644
--- a/libmpdemux/demux_mkv.c
+++ b/libmpdemux/demux_mkv.c
@@ -3340,6 +3340,32 @@ demux_mkv_control (demuxer_t *demuxer, int cmd, void *arg)
       *((int *) arg) = (int) (100 * mkv_d->last_pts / mkv_d->duration);
       return DEMUXER_CTRL_OK; 
 
+    case DEMUXER_CTRL_SWITCH_AUDIO:
+      if (demuxer->audio && demuxer->audio->sh) {
+        int i;
+        demux_stream_t *d_audio = demuxer->audio;
+        sh_audio_t *sh_audio = d_audio->sh;
+        int idx = d_audio->id - 1; // track ids are 1 based
+        int num = mkv_d->num_tracks;
+        mkv_track_t *otrack = mkv_d->tracks[idx];
+        for (i = 1; i < num; i++) {
+          mkv_track_t *track = mkv_d->tracks[(idx+i)%num];
+          if ((track->type == MATROSKA_TRACK_AUDIO) &&
+              !strcmp(track->codec_id, otrack->codec_id) &&
+              (track->a_channels == otrack->a_channels) &&
+              (track->a_bps == otrack->a_bps) &&
+              (track->a_sfreq == otrack->a_sfreq)) {
+            break;
+          }
+        }
+        if (i < num) {
+          d_audio->id = (idx+i)%num + 1;
+          ds_free_packs(d_audio);
+        }
+        *((int *)arg)=(int)d_audio->id;
+      }
+      return DEMUXER_CTRL_OK;
+
     default:
       return DEMUXER_CTRL_NOTIMPL;
     }
-- 
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