From bb561230652d8ff4961c0ef749304a24d47a9170 Mon Sep 17 00:00:00 2001
From: arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Thu, 16 Jan 2003 22:34:46 +0000
Subject: [PATCH] fixed the well-known DVD/DVB audio delay bug :)

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8966 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libmpdemux/stheader.h |  3 +++
 libmpdemux/video.c    | 29 ++++++++++++++++++++++++++++-
 mplayer.c             |  2 +-
 3 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/libmpdemux/stheader.h b/libmpdemux/stheader.h
index af79be5bed..79a687d216 100644
--- a/libmpdemux/stheader.h
+++ b/libmpdemux/stheader.h
@@ -91,6 +91,9 @@ typedef struct {
   // frame counters:
   float num_frames;       // number of frames played
   int num_frames_decoded; // number of frames decoded
+  // timing (mostly for mpeg):
+  float pts;     // predicted/interpolated PTS of the current frame
+  float i_pts;   // PTS for the _next_ I/P frame
   // output format: (set by demuxer)
   float fps;              // frames per second (set only if constant fps)
   float frametime;        // 1/fps
diff --git a/libmpdemux/video.c b/libmpdemux/video.c
index b883142b62..0c643c18fb 100644
--- a/libmpdemux/video.c
+++ b/libmpdemux/video.c
@@ -214,6 +214,8 @@ int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char**
     demuxer_t *demuxer=d_video->demuxer;
     float frame_time=1;
     float pts1=d_video->pts;
+    float pts=0;
+    int picture_coding_type=0;
 //    unsigned char* start=NULL;
     int in_size=0;
     
@@ -246,6 +248,10 @@ int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char**
               break;
             }
           } else {
+	    if(i==0x100){
+		pts=d_video->pts;
+		d_video->pts=0;
+	    }
             //if(i==0x100) in_frame=1; // picture startcode
             if(i>=0x101 && i<0x1B0) in_frame=1; // picture startcode
             else if(!i) return -1; // EOF
@@ -258,6 +264,7 @@ int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char**
 	      case 0x1B3: mp_header_process_sequence_header (&picture, &videobuffer[start]);break;
 	      case 0x1B5: mp_header_process_extension (&picture, &videobuffer[start]);break;
 	      case 0x1B2: process_userdata (&videobuffer[start], videobuf_len-start);break;
+	      case 0x100: picture_coding_type=(videobuffer[start+1] >> 3) & 7;break;
 	  }
         }
         
@@ -336,7 +343,27 @@ int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char**
     }
     
     if(demuxer->file_format==DEMUXER_TYPE_MPEG_PS ||
-       demuxer->file_format==DEMUXER_TYPE_MPEG_ES) d_video->pts+=frame_time;
+       demuxer->file_format==DEMUXER_TYPE_MPEG_ES){
+
+//	if(pts>0.0001) printf("\r!!! pts: %5.3f [%d] (%5.3f)   \n",pts,picture_coding_type,i_pts);
+
+	sh_video->pts+=frame_time;
+	if(picture_coding_type<=2 && sh_video->i_pts){
+//	    printf("XXX predict: %5.3f pts: %5.3f error=%5.5f   \n",i_pts,d_video->pts2,i_pts-d_video->pts2);
+	    sh_video->pts=sh_video->i_pts;
+	    sh_video->i_pts=pts;
+	} else {
+	    if(pts){
+		if(picture_coding_type<=2) sh_video->i_pts=pts;
+		else {
+//		    printf("BBB predict: %5.3f pts: %5.3f error=%5.5f   \n",pts,d_video->pts2,pts-d_video->pts2);
+		    sh_video->pts=pts;
+		}
+	    }
+	}
+//	printf("\rIII pts: %5.3f [%d] (%5.3f)   \n",d_video->pts2,picture_coding_type,i_pts);
+    } else
+	sh_video->pts=d_video->pts;
     
     if(frame_time_ptr) *frame_time_ptr=frame_time;
     return in_size;
diff --git a/mplayer.c b/mplayer.c
index 85d6e02793..a54235d073 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -2052,7 +2052,7 @@ if(time_frame>0.001 && !(vo_flags&256)){
 #endif	  
       a_pts+=(ds_tell_pts(d_audio)-sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;
     }
-    v_pts=d_video->pts;
+    v_pts=sh_video ? sh_video->pts : d_video->pts;
 
       mp_dbg(MSGT_AVSYNC,MSGL_DBG2,"### A:%8.3f (%8.3f)  V:%8.3f  A-V:%7.4f  \n",a_pts,a_pts-audio_delay-delay,v_pts,(a_pts-delay-audio_delay)-v_pts);