[MPlayer-dev-eng] [RFC] subtitle code in mencoder

Reimar Döffinger Reimar.Doeffinger at stud.uni-karlsruhe.de
Sun Feb 11 14:29:41 CET 2007


Hello,
On Thu, Feb 08, 2007 at 03:16:45PM +0100, Reimar D?ffinger wrote:
> attached patch is supposed to make embedded subs work again with
> mencoder while sharing code with mplayer.
> The changes from the previous patch are also in this one (sorry, too
> lazy to clean it up properly).

Cleaned up version.
Testing, esp. for regressions with vobsub and external sub handling
welcome.

Greetings,
Reimar Döffinger
-------------- next part --------------
Index: mplayer.c
===================================================================
--- mplayer.c	(revision 22202)
+++ mplayer.c	(working copy)
@@ -418,7 +419,10 @@
 int use_filedir_conf;
 
 static unsigned int inited_flags=0;
-static void update_subtitles(int reset);
+sub_data* subdata = NULL;
+static subtitle* vo_sub_last = NULL;
+
+#include "mp_common.c"
 #define INITED_VO 1
 #define INITED_AO 2
 #define INITED_GUI 4
@@ -967,9 +971,6 @@
     return source;
 }
 
-sub_data* subdata = NULL;
-static subtitle* vo_sub_last = NULL;
-
 void add_subtitles(char *filename, float fps, int silent)
 {
     sub_data *subd;
@@ -2890,126 +2891,6 @@
 	audio_out->get_delay();
 }
 
-static void update_subtitles(int reset)
-{
-    unsigned char *packet=NULL;
-    int len;
-    char type = d_dvdsub->sh ? ((sh_sub_t *)d_dvdsub->sh)->type : 'v';
-    static subtitle subs;
-    if (type == 'a')
-#ifdef USE_ASS
-      if (!ass_enabled)
-#endif
-      type = 't';
-    if (reset) {
-	sub_clear_text(&subs, MP_NOPTS_VALUE);
-	if (vo_sub) {
-	    vo_sub = NULL;
-	    vo_osd_changed(OSDTYPE_SUBTITLE);
-	}
-	if (vo_spudec) {
-	    spudec_reset(vo_spudec);
-	    vo_osd_changed(OSDTYPE_SPU);
-	}
-    }
-    // find sub
-    if (subdata) {
-	double pts = sh_video->pts;
-	if (sub_fps==0) sub_fps = sh_video->fps;
-	current_module = "find_sub";
-	if (pts > sub_last_pts || pts < sub_last_pts-1.0) {
-	    find_sub(subdata, (pts+sub_delay) *
-		     (subdata->sub_uses_time ? 100. : sub_fps)); 
-	    if (vo_sub) vo_sub_last = vo_sub;
-	    // FIXME! frame counter...
-	    sub_last_pts = pts;
-	}
-    }
-
-    // DVD sub:
-    if (vo_config_count && vo_spudec && type == 'v') {
-	int timestamp;
-	current_module = "spudec";
-	spudec_heartbeat(vo_spudec, 90000*sh_video->timer);
-	/* Get a sub packet from the DVD or a vobsub and make a timestamp
-	 * relative to sh_video->timer */
-	while(1) {
-	    // Vobsub
-	    len = 0;
-	    if (vo_vobsub) {
-		if (sh_video->pts+sub_delay >= 0) {
-		    len = vobsub_get_packet(vo_vobsub, sh_video->pts+sub_delay,
-					    (void**)&packet, &timestamp);
-		    if (len > 0) {
-			timestamp -= (sh_video->pts + sub_delay - sh_video->timer)*90000;
-			mp_dbg(MSGT_CPLAYER,MSGL_V,"\rVOB sub: len=%d v_pts=%5.3f v_timer=%5.3f sub=%5.3f ts=%d \n",len,sh_video->pts,sh_video->timer,timestamp / 90000.0,timestamp);
-		    }
-		}
-	    } else {
-		// DVD sub
-		len = ds_get_packet_sub(d_dvdsub, (unsigned char**)&packet);
-		if (len > 0) {
-		    // XXX This is wrong, sh_video->pts can be arbitrarily
-		    // much behind demuxing position. Unfortunately using
-		    // d_video->pts which would have been the simplest
-		    // improvement doesn't work because mpeg specific hacks
-		    // in video.c set d_video->pts to 0.
-		    float x = d_dvdsub->pts - sh_video->pts;
-		    if (x > -20 && x < 20) // prevent missing subs on pts reset
-			timestamp = 90000*(sh_video->timer + d_dvdsub->pts
-					   + sub_delay - sh_video->pts);
-		    else timestamp = 90000*(sh_video->timer + sub_delay);
-		    mp_dbg(MSGT_CPLAYER, MSGL_V, "\rDVD sub: len=%d  "
-			   "v_pts=%5.3f  s_pts=%5.3f  ts=%d \n", len,
-			   sh_video->pts, d_dvdsub->pts, timestamp);
-		}
-	    }
-	    if (len<=0 || !packet) break;
-	    if (timestamp >= 0)
-		spudec_assemble(vo_spudec, packet, len, timestamp);
-	}
-
-	if (spudec_changed(vo_spudec))
-	    vo_osd_changed(OSDTYPE_SPU);
-    } else if (dvdsub_id >= 0 && type == 't') {
-	double curpts = sh_video->pts + sub_delay;
-	double endpts;
-	vo_sub = &subs;
-	while (d_dvdsub->first) {
-	    double pts = ds_get_next_pts(d_dvdsub);
-	    if (pts > curpts)
-		break;
-	    endpts = d_dvdsub->first->endpts;
-	    len = ds_get_packet_sub(d_dvdsub, &packet);
-#ifdef USE_ASS
-	    if (ass_enabled) {
-		static ass_track_t *global_ass_track = NULL;
-		if (!global_ass_track) global_ass_track = ass_default_track(ass_library);
-		ass_track = global_ass_track;
-		vo_sub = NULL;
-		if (pts != MP_NOPTS_VALUE) {
-		    if (endpts == MP_NOPTS_VALUE) endpts = pts + 3;
-		    sub_clear_text(&subs, MP_NOPTS_VALUE);
-		    sub_add_text(&subs, packet, len, endpts);
-		    subs.start = pts * 100;
-		    subs.end = endpts * 100;
-		    ass_process_subtitle(ass_track, &subs);
-		}
-	    } else
-#endif
-		if (pts != MP_NOPTS_VALUE) {
-		    if (endpts == MP_NOPTS_VALUE)
-			sub_clear_text(&subs, MP_NOPTS_VALUE);
-		    sub_add_text(&subs, packet, len, endpts);
-		    vo_osd_changed(OSDTYPE_SUBTITLE);
-		}
-	}
-	if (sub_clear_text(&subs, curpts))
-	    vo_osd_changed(OSDTYPE_SUBTITLE);
-    }
-    current_module=NULL;
-}
-
 static int generate_video_frame(sh_video_t *sh_video, demux_stream_t *d_video)
 {
     unsigned char *start;
Index: mencoder.c
===================================================================
--- mencoder.c	(revision 22202)
+++ mencoder.c	(working copy)
@@ -295,6 +295,16 @@
 #include "vobsub.h"
 
 #include "libao2/audio_out.h"
+
+static demux_stream_t *d_audio;
+static demux_stream_t *d_video;
+static demux_stream_t *d_dvdsub;
+static sh_audio_t *sh_audio;
+static sh_video_t *sh_video;
+static subtitle *vo_sub_last;
+static char *current_module;
+#include "mp_common.c"
+
 /* FIXME */
 static void mencoder_exit(int level, const char *how)
 {
@@ -369,11 +379,6 @@
 demuxer_t* demuxer=NULL;
 stream_t* stream2=NULL;
 demuxer_t* demuxer2=NULL;
-demux_stream_t *d_audio=NULL;
-demux_stream_t *d_video=NULL;
-demux_stream_t *d_dvdsub=NULL;
-sh_audio_t *sh_audio=NULL;
-sh_video_t *sh_video=NULL;
 int file_format=DEMUXER_TYPE_UNKNOWN;
 int i=DEMUXER_TYPE_UNKNOWN;
 void *vobsub_writer=NULL;
@@ -1483,22 +1488,17 @@
 
 #ifdef USE_DVDREAD
 // DVD sub:
- if(vo_spudec||vobsub_writer){
+ if(vobsub_writer){
      unsigned char* packet=NULL;
      int len;
      while((len=ds_get_packet_sub(d_dvdsub,&packet))>0){
 	 mp_msg(MSGT_MENCODER,MSGL_V,"\rDVD sub: len=%d  v_pts=%5.3f  s_pts=%5.3f  \n",len,sh_video->pts,d_dvdsub->pts);
-	 if (vo_spudec)
-	 spudec_assemble(vo_spudec,packet,len,90000*d_dvdsub->pts);
-	 if (vobsub_writer)
 	     vobsub_out_output(vobsub_writer,packet,len,mux_v->timer + d_dvdsub->pts - sh_video->pts);
      }
-     if (vo_spudec) {
-     spudec_heartbeat(vo_spudec,90000*sh_video->pts);
-     vo_osd_changed(OSDTYPE_SPU);
-     }
  }
+ else
 #endif
+    update_subtitles(0);
 
  frame_data = (s_frame_data){ .start = NULL, .in_size = 0, .frame_time = 0., .already_read = 0 };
 
Index: mp_common.c
===================================================================
--- mp_common.c	(revision 0)
+++ mp_common.c	(revision 0)
@@ -0,0 +1,120 @@
+static void update_subtitles(int reset)
+{
+    unsigned char *packet=NULL;
+    int len;
+    char type = d_dvdsub->sh ? ((sh_sub_t *)d_dvdsub->sh)->type : 'v';
+    static subtitle subs;
+    if (type == 'a')
+#ifdef USE_ASS
+      if (!ass_enabled)
+#endif
+      type = 't';
+    if (reset) {
+	sub_clear_text(&subs, MP_NOPTS_VALUE);
+	if (vo_sub) {
+	    vo_sub = NULL;
+	    vo_osd_changed(OSDTYPE_SUBTITLE);
+	}
+	if (vo_spudec) {
+	    spudec_reset(vo_spudec);
+	    vo_osd_changed(OSDTYPE_SPU);
+	}
+    }
+    // find sub
+    if (subdata) {
+	double pts = sh_video->pts;
+	if (sub_fps==0) sub_fps = sh_video->fps;
+	current_module = "find_sub";
+	if (pts > sub_last_pts || pts < sub_last_pts-1.0) {
+	    find_sub(subdata, (pts+sub_delay) *
+		     (subdata->sub_uses_time ? 100. : sub_fps)); 
+	    if (vo_sub) vo_sub_last = vo_sub;
+	    // FIXME! frame counter...
+	    sub_last_pts = pts;
+	}
+    }
+
+    // DVD sub:
+    if (vo_config_count && vo_spudec && type == 'v') {
+	int timestamp;
+	current_module = "spudec";
+	spudec_heartbeat(vo_spudec, 90000*sh_video->timer);
+	/* Get a sub packet from the DVD or a vobsub and make a timestamp
+	 * relative to sh_video->timer */
+	while(1) {
+	    // Vobsub
+	    len = 0;
+	    if (vo_vobsub) {
+		if (sh_video->pts+sub_delay >= 0) {
+		    len = vobsub_get_packet(vo_vobsub, sh_video->pts+sub_delay,
+					    (void**)&packet, &timestamp);
+		    if (len > 0) {
+			timestamp -= (sh_video->pts + sub_delay - sh_video->timer)*90000;
+			mp_dbg(MSGT_CPLAYER,MSGL_V,"\rVOB sub: len=%d v_pts=%5.3f v_timer=%5.3f sub=%5.3f ts=%d \n",len,sh_video->pts,sh_video->timer,timestamp / 90000.0,timestamp);
+		    }
+		}
+	    } else {
+		// DVD sub
+		len = ds_get_packet_sub(d_dvdsub, (unsigned char**)&packet);
+		if (len > 0) {
+printf("dvdsub\n");
+		    // XXX This is wrong, sh_video->pts can be arbitrarily
+		    // much behind demuxing position. Unfortunately using
+		    // d_video->pts which would have been the simplest
+		    // improvement doesn't work because mpeg specific hacks
+		    // in video.c set d_video->pts to 0.
+		    float x = d_dvdsub->pts - sh_video->pts;
+		    if (x > -20 && x < 20) // prevent missing subs on pts reset
+			timestamp = 90000*(sh_video->timer + d_dvdsub->pts
+					   + sub_delay - sh_video->pts);
+		    else timestamp = 90000*(sh_video->timer + sub_delay);
+		    mp_dbg(MSGT_CPLAYER, MSGL_V, "\rDVD sub: len=%d  "
+			   "v_pts=%5.3f  s_pts=%5.3f  ts=%d \n", len,
+			   sh_video->pts, d_dvdsub->pts, timestamp);
+		}
+	    }
+	    if (len<=0 || !packet) break;
+	    if (timestamp >= 0)
+		spudec_assemble(vo_spudec, packet, len, timestamp);
+	}
+
+	if (spudec_changed(vo_spudec))
+	    vo_osd_changed(OSDTYPE_SPU);
+    } else if (dvdsub_id >= 0 && type == 't') {
+	double curpts = sh_video->pts + sub_delay;
+	double endpts;
+	vo_sub = &subs;
+	while (d_dvdsub->first) {
+	    double pts = ds_get_next_pts(d_dvdsub);
+	    if (pts > curpts)
+		break;
+	    endpts = d_dvdsub->first->endpts;
+	    len = ds_get_packet_sub(d_dvdsub, &packet);
+#ifdef USE_ASS
+	    if (ass_enabled) {
+		static ass_track_t *global_ass_track = NULL;
+		if (!global_ass_track) global_ass_track = ass_default_track(ass_library);
+		ass_track = global_ass_track;
+		vo_sub = NULL;
+		if (pts != MP_NOPTS_VALUE) {
+		    if (endpts == MP_NOPTS_VALUE) endpts = pts + 3;
+		    sub_clear_text(&subs, MP_NOPTS_VALUE);
+		    sub_add_text(&subs, packet, len, endpts);
+		    subs.start = pts * 100;
+		    subs.end = endpts * 100;
+		    ass_process_subtitle(ass_track, &subs);
+		}
+	    } else
+#endif
+		if (pts != MP_NOPTS_VALUE) {
+		    if (endpts == MP_NOPTS_VALUE)
+			sub_clear_text(&subs, MP_NOPTS_VALUE);
+		    sub_add_text(&subs, packet, len, endpts);
+		    vo_osd_changed(OSDTYPE_SUBTITLE);
+		}
+	}
+	if (sub_clear_text(&subs, curpts))
+	    vo_osd_changed(OSDTYPE_SUBTITLE);
+    }
+    current_module=NULL;
+}


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