seeking flags implemented: 0x1=rel/abs and 0x2=time/percent

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1629 b3059339-0415-0410-9bf9-f77b7e298cf2

4 files changed, 38 insertions, 9 deletions

diff --git a/demux_asf.c b/demux_asf.c
index c159c7c154..8ff31f0866 100644
--- a/demux_asf.c
+++ b/demux_asf.c
@@ -327,13 +327,15 @@ void demux_seek_asf(demuxer_t *demuxer,float rel_seek_secs,int flags){
 
   //================= seek in ASF ==========================
     float p_rate=10; // packets / sec
-    off_t rel_seek_packs=rel_seek_secs*p_rate; // FIXME: int may be enough?
+    off_t rel_seek_packs=(flags&2)?	 // FIXME: int may be enough?
+	(rel_seek_secs*(demuxer->movi_end-demuxer->movi_start)/asf_packetsize):
+	(rel_seek_secs*p_rate);
     off_t rel_seek_bytes=rel_seek_packs*asf_packetsize;
     off_t newpos;
     //printf("ASF: packs: %d  duration: %d  \n",(int)fileh.packets,*((int*)&fileh.duration));
 //    printf("ASF_seek: %d secs -> %d packs -> %d bytes  \n",
 //       rel_seek_secs,rel_seek_packs,rel_seek_bytes);
-    newpos=demuxer->filepos+rel_seek_bytes;
+    newpos=((flags&1)?demuxer->movi_start:demuxer->filepos)+rel_seek_bytes;
     if(newpos<0 || newpos<demuxer->movi_start) newpos=demuxer->movi_start;
 //    printf("\r -- asf: newpos=%d -- \n",newpos);
     stream_seek(demuxer->stream,newpos);
diff --git a/demux_avi.c b/demux_avi.c
index 34dff21ecd..7b968ea157 100644
--- a/demux_avi.c
+++ b/demux_avi.c
@@ -488,6 +488,25 @@ void demux_seek_avi(demuxer_t *demuxer,float rel_seek_secs,int flags){
     int rel_seek_frames=rel_seek_secs*sh_video->fps;
     int video_chunk_pos=d_video->pos;
     int i;
+
+      if(flags&1){
+	// seek absolute
+	video_chunk_pos=0;
+      }
+      
+      if(flags&2){
+        // float 0..1
+	int total=sh_video->video.dwLength;
+	if(total<=1){
+	    // bad video header, try to get it from audio
+	    total=sh_video->fps*sh_audio->audio.dwLength/sh_audio->wf->nAvgBytesPerSec;
+	    if(total<1){
+              mp_msg(MSGT_SEEK,MSGL_WARN,"Couldn't determine number of frames (for absoulte seek)  \n");
+	      total=0;
+	    }
+	}
+	rel_seek_frames=rel_seek_secs*total;
+      }
     
       priv->skip_video_frames=0;
       priv->avi_audio_pts=0;
diff --git a/demux_mpg.c b/demux_mpg.c
index 3de56b25ee..5f3477c509 100644
--- a/demux_mpg.c
+++ b/demux_mpg.c
@@ -351,15 +351,21 @@ void demux_seek_mpg(demuxer_t *demuxer,float rel_seek_secs,int flags){
     sh_video_t *sh_video=d_video->sh;
 
   //================= seek in MPEG ==========================
-        off_t newpos;
-        if(!sh_video->i_bps) // unspecified?
-          newpos=demuxer->filepos+2324*75*rel_seek_secs; // 174.3 kbyte/sec
+    off_t newpos=(flags&1)?demuxer->movi_start:demuxer->filepos;
+	
+    if(flags&2){
+	// float seek 0..1
+	newpos+=(demuxer->movi_end-demuxer->movi_start)*rel_seek_secs;
+    } else {
+	// time seek (secs)
+        if(!sh_video->i_bps) // unspecified or VBR
+          newpos+=2324*75*rel_seek_secs; // 174.3 kbyte/sec
         else
-          newpos=demuxer->filepos+(sh_video->i_bps)*rel_seek_secs;
+          newpos+=sh_video->i_bps*rel_seek_secs;
+    }
+
+        if(newpos<demuxer->movi_start) newpos=demuxer->movi_start;
 
-        if(newpos<demuxer->stream->start_pos 
-	 && demuxer->stream->type==STREAMTYPE_VCD)
-	     newpos=demuxer->stream->start_pos; // for VCD
 #ifdef _LARGEFILE_SOURCE
         newpos&=~((long long)STREAM_BUFFER_SIZE-1);  /* sector boundary */
 #else
diff --git a/demuxer.c b/demuxer.c
index 639fca8185..62d8ecda95 100644
--- a/demuxer.c
+++ b/demuxer.c
@@ -460,6 +460,8 @@ switch(file_format){
  }
  case DEMUXER_TYPE_MPEG_PS: {
   sh_video=d_video->sh;sh_video->ds=d_video;
+  if(demuxer->stream->type!=STREAMTYPE_VCD) demuxer->movi_start=0; // for VCD
+
   if(audio_id!=-2) {
    if(!ds_fill_buffer(d_audio)){
     mp_msg(MSGT_DEMUXER,MSGL_INFO,MSGTR_MissingMPEGaudio);