Second-try commit of this patch.

1. Include audio_delay as an argument to demux_seek.
2. Modify demux_seek_avi to adjust the audio/video stream positions so
   that mplayer/mencoder will instantly be in sync even when -delay is
   specified.

I've quadruple checked this time; hopefully I haven't missed anything.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17637 b3059339-0415-0410-9bf9-f77b7e298cf2

29 files changed, 39 insertions, 38 deletions

diff --git a/libmpdemux/demux_aac.c b/libmpdemux/demux_aac.c
index 840ce866a0..eb0d853933 100644
--- a/libmpdemux/demux_aac.c
+++ b/libmpdemux/demux_aac.c
@@ -207,7 +207,7 @@ static int demux_aac_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds)
 
 
 //This is an almost verbatim copy of high_res_mp3_seek(), from demux_audio.c
-static void demux_aac_seek(demuxer_t *demuxer, float rel_seek_secs, int flags)
+static void demux_aac_seek(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
 {
 	aac_priv_t *priv = (aac_priv_t *) demuxer->priv;
 	demux_stream_t *d_audio=demuxer->audio;
diff --git a/libmpdemux/demux_asf.c b/libmpdemux/demux_asf.c
index 4a177b70a3..c21ed166f6 100644
--- a/libmpdemux/demux_asf.c
+++ b/libmpdemux/demux_asf.c
@@ -369,7 +369,7 @@ static int demux_asf_fill_buffer(demuxer_t *demux, demux_stream_t *ds){
 
 extern void skip_audio_frame(sh_audio_t *sh_audio);
 
-static void demux_seek_asf(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_seek_asf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
     demux_stream_t *d_audio=demuxer->audio;
     demux_stream_t *d_video=demuxer->video;
     sh_audio_t *sh_audio=d_audio->sh;
diff --git a/libmpdemux/demux_audio.c b/libmpdemux/demux_audio.c
index 35bd6a274f..452850f6ca 100644
--- a/libmpdemux/demux_audio.c
+++ b/libmpdemux/demux_audio.c
@@ -476,7 +476,7 @@ static void high_res_mp3_seek(demuxer_t *demuxer,float time) {
   }
 }
 
-static void demux_audio_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_audio_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
   sh_audio_t* sh_audio;
   stream_t* s;
   int base,pos;
diff --git a/libmpdemux/demux_avi.c b/libmpdemux/demux_avi.c
index 6febdd160c..21ab48dc6c 100644
--- a/libmpdemux/demux_avi.c
+++ b/libmpdemux/demux_avi.c
@@ -618,7 +618,7 @@ static demuxer_t* demux_open_avi(demuxer_t* demuxer){
 
 //extern float initial_pts_delay;
 
-void demux_seek_avi(demuxer_t *demuxer,float rel_seek_secs,int flags){
+void demux_seek_avi(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
     avi_priv_t *priv=demuxer->priv;
     demux_stream_t *d_audio=demuxer->audio;
     demux_stream_t *d_video=demuxer->video;
@@ -706,8 +706,8 @@ void demux_seek_avi(demuxer_t *demuxer,float rel_seek_secs,int flags){
 	    curr_audio_pos/=align;
 	    curr_audio_pos*=align;
 #else
-	    curr_audio_pos=(priv->avi_video_pts)*(float)sh_audio->audio.dwRate/(float)sh_audio->audio.dwScale;
-	    curr_audio_pos-=sh_audio->audio.dwStart;
+	    /* immediate seeking to audio position, including when streams are delayed */
+	    curr_audio_pos=(priv->avi_video_pts + audio_delay)*(float)sh_audio->audio.dwRate/(float)sh_audio->audio.dwScale;
 	    curr_audio_pos*=sh_audio->audio.dwSampleSize;
 #endif
 
@@ -733,7 +733,8 @@ void demux_seek_avi(demuxer_t *demuxer,float rel_seek_secs,int flags){
 	      
 	} else {
 	    // VBR audio
-	    int chunks=(priv->avi_video_pts)*(float)sh_audio->audio.dwRate/(float)sh_audio->audio.dwScale;
+	    /* immediate seeking to audio position, including when streams are delayed */
+	    int chunks=(priv->avi_video_pts + audio_delay)*(float)sh_audio->audio.dwRate/(float)sh_audio->audio.dwScale;
 	    audio_chunk_pos=0;
 	    
         // find audio chunk pos:
diff --git a/libmpdemux/demux_avs.c b/libmpdemux/demux_avs.c
index bc3829da4d..7c8de70225 100644
--- a/libmpdemux/demux_avs.c
+++ b/libmpdemux/demux_avs.c
@@ -375,7 +375,7 @@ static void demux_close_avs(demuxer_t* demuxer)
     }
 }
 
-static void demux_seek_avs(demuxer_t *demuxer, float rel_seek_secs,int flags)
+static void demux_seek_avs(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
 {
     demux_stream_t *d_video=demuxer->video;
     sh_video_t *sh_video=d_video->sh;
diff --git a/libmpdemux/demux_demuxers.c b/libmpdemux/demux_demuxers.c
index a3e294a04c..092be8d505 100644
--- a/libmpdemux/demux_demuxers.c
+++ b/libmpdemux/demux_demuxers.c
@@ -57,7 +57,7 @@ static int demux_demuxers_fill_buffer(demuxer_t *demux,demux_stream_t *ds) {
   return 0;
 }
 
-static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,int flags) {
+static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
   dd_priv_t* priv;
   float pos;
   priv=demuxer->priv;
@@ -66,13 +66,13 @@ static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,int flags
   priv->sd->stream->eof = 0;
 
   // Seek video
-  demux_seek(priv->vd,rel_seek_secs,flags);
+  demux_seek(priv->vd,rel_seek_secs,audio_delay,flags);
   // Get the new pos
   pos = demuxer->video->pts;
 
   if(priv->ad != priv->vd) {
     sh_audio_t* sh = (sh_audio_t*)demuxer->audio->sh;
-    demux_seek(priv->ad,pos,1);
+    demux_seek(priv->ad,pos,audio_delay,1);
     // In case the demuxer don't set pts
     if(!demuxer->audio->pts)
       demuxer->audio->pts = pos-((ds_tell_pts(demuxer->audio)-sh->a_in_buffer_len)/(float)sh->i_bps);
@@ -80,7 +80,7 @@ static void demux_demuxers_seek(demuxer_t *demuxer,float rel_seek_secs,int flags
   }
 
   if(priv->sd != priv->vd)
-      demux_seek(priv->sd,pos,1);
+      demux_seek(priv->sd,pos,audio_delay,1);
 
 }
 
diff --git a/libmpdemux/demux_film.c b/libmpdemux/demux_film.c
index a15a252e84..04e5b95481 100644
--- a/libmpdemux/demux_film.c
+++ b/libmpdemux/demux_film.c
@@ -46,7 +46,7 @@ typedef struct _film_data_t
   unsigned int film_version;
 } film_data_t;
 
-static void demux_seek_film(demuxer_t *demuxer, float rel_seek_secs, int flags)
+static void demux_seek_film(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
 {
   film_data_t *film_data = (film_data_t *)demuxer->priv;
   int new_current_chunk=(flags&1)?0:film_data->current_chunk;
diff --git a/libmpdemux/demux_fli.c b/libmpdemux/demux_fli.c
index 2b23835c52..6750a256b4 100644
--- a/libmpdemux/demux_fli.c
+++ b/libmpdemux/demux_fli.c
@@ -22,7 +22,7 @@ typedef struct _fli_frames_t {
   unsigned int *frame_size;
 } fli_frames_t;
 
-static void demux_seek_fli(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_seek_fli(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
   fli_frames_t *frames = (fli_frames_t *)demuxer->priv;
   sh_video_t *sh_video = demuxer->video->sh;
   int newpos=(flags&1)?0:frames->current_frame;
diff --git a/libmpdemux/demux_lavf.c b/libmpdemux/demux_lavf.c
index 2ee83e7708..e2aaa64de7 100644
--- a/libmpdemux/demux_lavf.c
+++ b/libmpdemux/demux_lavf.c
@@ -389,9 +389,9 @@ static int demux_lavf_fill_buffer(demuxer_t *demux, demux_stream_t *dsds){
     return 1;
 }
 
-static void demux_seek_lavf(demuxer_t *demuxer, float rel_seek_secs, int flags){
+static void demux_seek_lavf(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags){
     lavf_priv_t *priv = demuxer->priv;
-    mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_seek_lavf(%p, %f, %d)\n", demuxer, rel_seek_secs, flags);
+    mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_seek_lavf(%p, %f, %f, %d)\n", demuxer, rel_seek_secs, audio_delay, flags);
     
 #if LIBAVFORMAT_BUILD < 4619
     av_seek_frame(priv->avfc, -1, priv->last_pts + rel_seek_secs*AV_TIME_BASE);
diff --git a/libmpdemux/demux_mf.c b/libmpdemux/demux_mf.c
index 415ff0a68b..a676d3ba34 100644
--- a/libmpdemux/demux_mf.c
+++ b/libmpdemux/demux_mf.c
@@ -15,7 +15,7 @@
 #include "stheader.h"
 #include "mf.h"
 
-static void demux_seek_mf(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_seek_mf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
   mf_t * mf = (mf_t *)demuxer->priv;
   sh_video_t   * sh_video = demuxer->video->sh;
   int newpos = (flags & 1)?0:mf->curr_frame;
diff --git a/libmpdemux/demux_mov.c b/libmpdemux/demux_mov.c
index ae2b06abe5..3537ce39ce 100644
--- a/libmpdemux/demux_mov.c
+++ b/libmpdemux/demux_mov.c
@@ -2007,7 +2007,7 @@ if(trak->samplesize){
 return pts;
 }
 
-static void demux_seek_mov(demuxer_t *demuxer,float pts,int flags){
+static void demux_seek_mov(demuxer_t *demuxer,float pts,float audio_delay,int flags){
     mov_priv_t* priv=demuxer->priv;
     demux_stream_t* ds;
     mov_track_t* trak;
diff --git a/libmpdemux/demux_mpc.c b/libmpdemux/demux_mpc.c
index 139e96c604..0f7b18da2f 100644
--- a/libmpdemux/demux_mpc.c
+++ b/libmpdemux/demux_mpc.c
@@ -153,7 +153,7 @@ static int demux_mpc_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
   return 1;
 }
 
-static void demux_mpc_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_mpc_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
   sh_audio_t* sh_audio = demuxer->audio->sh;
   da_priv_t* priv = demuxer->priv;
   stream_t* s = demuxer->stream;
diff --git a/libmpdemux/demux_mpg.c b/libmpdemux/demux_mpg.c
index 9b11dc88a1..647ece7e83 100644
--- a/libmpdemux/demux_mpg.c
+++ b/libmpdemux/demux_mpg.c
@@ -676,7 +676,7 @@ do{
 
 extern void skip_audio_frame(sh_audio_t *sh_audio);
 
-void demux_seek_mpg(demuxer_t *demuxer,float rel_seek_secs,int flags){
+void demux_seek_mpg(demuxer_t *demuxer,float rel_seek_secs,float audio_delay, int flags){
     demux_stream_t *d_audio=demuxer->audio;
     demux_stream_t *d_video=demuxer->video;
     sh_audio_t *sh_audio=d_audio->sh;
diff --git a/libmpdemux/demux_nsv.c b/libmpdemux/demux_nsv.c
index 92942599e5..94a0e3f68f 100644
--- a/libmpdemux/demux_nsv.c
+++ b/libmpdemux/demux_nsv.c
@@ -34,7 +34,7 @@ typedef struct {
 /**
  * Seeking still to be implemented
  */
-static void demux_seek_nsv ( demuxer_t *demuxer, float rel_seek_secs, int flags )
+static void demux_seek_nsv ( demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags )
 {
 // seeking is not yet implemented
 }
diff --git a/libmpdemux/demux_nuv.c b/libmpdemux/demux_nuv.c
index a09ad71d7a..4263c0ef25 100644
--- a/libmpdemux/demux_nuv.c
+++ b/libmpdemux/demux_nuv.c
@@ -63,7 +63,7 @@ static int nearestBitrate(int bitrate) {
 /**
  * Seek to a position relative to the current position, indicated in time.
  */
-static void demux_seek_nuv ( demuxer_t *demuxer, float rel_seek_secs, int flags )
+static void demux_seek_nuv ( demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags )
 {
 #define MAX_TIME 1000000
 	nuv_priv_t* priv = demuxer->priv;
diff --git a/libmpdemux/demux_ogg.c b/libmpdemux/demux_ogg.c
index f2424c4dff..aa91b5bee7 100644
--- a/libmpdemux/demux_ogg.c
+++ b/libmpdemux/demux_ogg.c
@@ -1422,7 +1422,7 @@ demuxer_t* init_avi_with_ogg(demuxer_t* demuxer) {
 
 }
 
-static void demux_ogg_seek(demuxer_t *demuxer,float rel_seek_secs,int flags) {
+static void demux_ogg_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags) {
   ogg_demuxer_t* ogg_d = demuxer->priv;
   ogg_sync_state* sync = &ogg_d->sync;
   ogg_page* page= &ogg_d->page;
diff --git a/libmpdemux/demux_pva.c b/libmpdemux/demux_pva.c
index 0ad8faf87a..419536d3dc 100644
--- a/libmpdemux/demux_pva.c
+++ b/libmpdemux/demux_pva.c
@@ -466,7 +466,7 @@ int pva_get_payload(demuxer_t * d,pva_payload_t * payload)
 	return 1;
 }
 
-static void demux_seek_pva(demuxer_t * demuxer,float rel_seek_secs,int flags)
+static void demux_seek_pva(demuxer_t * demuxer,float rel_seek_secs,float audio_delay,int flags)
 {
 	int total_bitrate=0;
 	off_t dest_offset;
diff --git a/libmpdemux/demux_rawaudio.c b/libmpdemux/demux_rawaudio.c
index 2da02ce955..a816de6654 100644
--- a/libmpdemux/demux_rawaudio.c
+++ b/libmpdemux/demux_rawaudio.c
@@ -79,7 +79,7 @@ static int demux_rawaudio_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
   return 1;
 }
 
-static void demux_rawaudio_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_rawaudio_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
   stream_t* s = demuxer->stream;
   sh_audio_t* sh_audio = demuxer->audio->sh;
   off_t base,pos;
diff --git a/libmpdemux/demux_rawdv.c b/libmpdemux/demux_rawdv.c
index 1d4886ff98..8163a34fc0 100644
--- a/libmpdemux/demux_rawdv.c
+++ b/libmpdemux/demux_rawdv.c
@@ -36,7 +36,7 @@ typedef struct
    dv_decoder_t *decoder;
 } rawdv_frames_t;
 
-static void demux_seek_rawdv(demuxer_t *demuxer,float rel_seek_secs,int flags)
+static void demux_seek_rawdv(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags)
 {
    rawdv_frames_t *frames = (rawdv_frames_t *)demuxer->priv;
    sh_video_t *sh_video = demuxer->video->sh;
diff --git a/libmpdemux/demux_rawvideo.c b/libmpdemux/demux_rawvideo.c
index 4e0f42caec..d493792cbd 100644
--- a/libmpdemux/demux_rawvideo.c
+++ b/libmpdemux/demux_rawvideo.c
@@ -118,7 +118,7 @@ static int demux_rawvideo_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
   return 1;
 }
 
-static void demux_rawvideo_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_rawvideo_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
   stream_t* s = demuxer->stream;
   sh_video_t* sh_video = demuxer->video->sh;
   off_t pos;
diff --git a/libmpdemux/demux_real.c b/libmpdemux/demux_real.c
index a4acc6fe4f..2f7e9bc574 100644
--- a/libmpdemux/demux_real.c
+++ b/libmpdemux/demux_real.c
@@ -1825,7 +1825,7 @@ static void demux_close_real(demuxer_t *demuxer)
 }
 
 /* please upload RV10 samples WITH INDEX CHUNK */
-static void demux_seek_real(demuxer_t *demuxer, float rel_seek_secs, int flags)
+static void demux_seek_real(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
 {
     real_priv_t *priv = demuxer->priv;
     demux_stream_t *d_audio = demuxer->audio;
diff --git a/libmpdemux/demux_realaud.c b/libmpdemux/demux_realaud.c
index 2d4a1672e9..1346e34bc2 100644
--- a/libmpdemux/demux_realaud.c
+++ b/libmpdemux/demux_realaud.c
@@ -341,7 +341,7 @@ static void demux_close_ra(demuxer_t *demuxer)
 
 #if 0
 /* please upload RV10 samples WITH INDEX CHUNK */
-int demux_seek_ra(demuxer_t *demuxer, float rel_seek_secs, int flags)
+int demux_seek_ra(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
 {
     real_priv_t *priv = demuxer->priv;
     demux_stream_t *d_audio = demuxer->audio;
diff --git a/libmpdemux/demux_ts.c b/libmpdemux/demux_ts.c
index 9e73c01408..be3adfcafb 100644
--- a/libmpdemux/demux_ts.c
+++ b/libmpdemux/demux_ts.c
@@ -3071,7 +3071,7 @@ extern int videobuf_code_len;
 extern int sync_video_packet(demux_stream_t *);
 extern int skip_video_packet(demux_stream_t *);
 
-static void demux_seek_ts(demuxer_t *demuxer, float rel_seek_secs, int flags)
+static void demux_seek_ts(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
 {
 	demux_stream_t *d_audio=demuxer->audio;
 	demux_stream_t *d_video=demuxer->video;
diff --git a/libmpdemux/demux_ty.c b/libmpdemux/demux_ty.c
index 385ccbb909..d5a07386ba 100644
--- a/libmpdemux/demux_ty.c
+++ b/libmpdemux/demux_ty.c
@@ -1237,7 +1237,7 @@ static int demux_ty_fill_buffer( demuxer_t *demux, demux_stream_t *dsds )
    return( 1 );
 }
 
-static void demux_seek_ty( demuxer_t *demuxer, float rel_seek_secs, int flags )
+static void demux_seek_ty( demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags )
 {
    demux_stream_t *d_audio = demuxer->audio;
    demux_stream_t *d_video = demuxer->video;
diff --git a/libmpdemux/demux_vqf.c b/libmpdemux/demux_vqf.c
index 092b0d6cd9..6ce7082a24 100644
--- a/libmpdemux/demux_vqf.c
+++ b/libmpdemux/demux_vqf.c
@@ -179,7 +179,7 @@ static int demux_vqf_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
   return 1;
 }
 
-static void demux_seek_vqf(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_seek_vqf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
 #if 0
   stream_t* s = demuxer->stream;
   sh_audio_t* sh_audio = demuxer->audio->sh;
diff --git a/libmpdemux/demux_xmms.c b/libmpdemux/demux_xmms.c
index bda2d6a0b8..fbaaf840ff 100644
--- a/libmpdemux/demux_xmms.c
+++ b/libmpdemux/demux_xmms.c
@@ -297,7 +297,7 @@ static int demux_xmms_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
   return 1;
 }
 
-static void demux_xmms_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
+static void demux_xmms_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
   stream_t* s = demuxer->stream;
   sh_audio_t* sh_audio = demuxer->audio->sh;
   xmms_priv_t *priv=demuxer->priv;
diff --git a/libmpdemux/demux_y4m.c b/libmpdemux/demux_y4m.c
index 2fe784b4a7..58a8afcb9a 100644
--- a/libmpdemux/demux_y4m.c
+++ b/libmpdemux/demux_y4m.c
@@ -231,7 +231,7 @@ static demuxer_t* demux_open_y4m(demuxer_t* demuxer){
     return demuxer;
 }
 
-static void demux_seek_y4m(demuxer_t *demuxer, float rel_seek_secs, int flags) {
+static void demux_seek_y4m(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags) {
     sh_video_t* sh = demuxer->video->sh;
     y4m_priv_t* priv = demuxer->priv;
     int rel_seek_frames = sh->fps*rel_seek_secs;
diff --git a/libmpdemux/demuxer.c b/libmpdemux/demuxer.c
index 8ff2fc747f..b8b0a14ae9 100644
--- a/libmpdemux/demuxer.c
+++ b/libmpdemux/demuxer.c
@@ -859,7 +859,7 @@ demuxer_t* demux_open(stream_t *vs,int file_format,int audio_id,int video_id,int
 }
 
 
-int demux_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
+int demux_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
     demux_stream_t *d_audio=demuxer->audio;
     demux_stream_t *d_video=demuxer->video;
     sh_audio_t *sh_audio=d_audio->sh;
@@ -893,7 +893,7 @@ if(!demuxer->seekable){
 #endif
 
 if (demuxer->desc->seek)
-    demuxer->desc->seek(demuxer,rel_seek_secs,flags);
+    demuxer->desc->seek(demuxer,rel_seek_secs,audio_delay,flags);
 
     if (sh_audio) resync_audio_stream(sh_audio);
 
diff --git a/libmpdemux/demuxer.h b/libmpdemux/demuxer.h
index bf17d79bb6..9eeff6e067 100644
--- a/libmpdemux/demuxer.h
+++ b/libmpdemux/demuxer.h
@@ -151,7 +151,7 @@ typedef struct demuxers_desc_st {
   /// Close the demuxer
   void (*close)(struct demuxer_st *demuxer); ///< Optional
   // Seek
-  void (*seek)(struct demuxer_st *demuxer, float rel_seek_secs, int flags); ///< Optional
+  void (*seek)(struct demuxer_st *demuxer, float rel_seek_secs, float audio_delay, int flags); ///< Optional
   // Control
   int (*control)(struct demuxer_st *demuxer, int cmd, void *arg); ///< Optional
 } demuxer_desc_t;
@@ -306,7 +306,7 @@ static inline int avi_stream_id(unsigned int id){
 }
 
 demuxer_t* demux_open(stream_t *stream,int file_format,int aid,int vid,int sid,char* filename);
-int demux_seek(demuxer_t *demuxer,float rel_seek_secs,int flags);
+int demux_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags);
 demuxer_t*  new_demuxers_demuxer(demuxer_t* vd, demuxer_t* ad, demuxer_t* sd);
 
 // AVI demuxer params: