* ffmpeg : add a new option, it set the level of error resilience.

It allows to play mpeg4 file badly encoded(illegal VLC code).(Sam you
should be able to play your .mp4 file by setting it to -1, with recent
ffmpeg cvs).

plugins/ffmpeg/ffmpeg.c

@@ -2,7 +2,7 @@
  * ffmpeg.c: video decoder using ffmpeg library
  *****************************************************************************
  * Copyright (C) 1999-2001 VideoLAN
- * $Id: ffmpeg.c,v 1.16 2002/07/20 18:01:42 sam Exp $
+ * $Id: ffmpeg.c,v 1.17 2002/07/20 18:53:33 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  *
@@ -71,11 +71,33 @@ void _M( vdec_getfunctions )( function_list_t * p_function_list )
  * Build configuration tree.
  *****************************************************************************/
 
+#define ERROR_RESILIENCE_LONGTEXT \
+    "ffmpeg can make errors resiliences.          \n"\
+    "Nevertheless, with buggy encoder (like ISO MPEG-4 encoder from M$) " \
+    "this will produce a lot of errors.\n" \
+    "Valid range is -1 to 99 (-1 disable all errors resiliences)."
+
+#define HURRY_UP_LONGTEXT \
+    "Allow the decoder to partially decode or skip frame(s) " \
+    "when there not enough time.\n It's usefull with low CPU power " \
+    "but it could produce broken pictures (not yet implemented)"
+    
 MODULE_CONFIG_START
+ADD_CATEGORY_HINT( N_("Miscellaneous"), NULL )
+#if LIBAVCODEC_BUILD >= 4611
+  ADD_INTEGER ( "ffmpeg-error-resilience", 0, NULL, 
+                "error resilience", ERROR_RESILIENCE_LONGTEXT )
+  ADD_INTEGER ( "ffmpeg-workaround-bugs", 0, NULL, 
+                "workaround bugs", "0-99, seems to be for msmpeg v3\n"  )
+#endif
+#if LIBAVCODEC_BUILD > 4603
+  ADD_BOOL( "ffmpeg-hurry-up", 0, NULL, "hurry up", HURRY_UP_LONGTEXT ) 
+#endif
+
 MODULE_CONFIG_STOP
 
 MODULE_INIT_START
-    SET_DESCRIPTION( "ffmpeg video decoder (MS-MPEG4,MPEG4,SVQ1,H263,H263.I)" )
+    SET_DESCRIPTION( "ffmpeg video decoder(MS-MPEG4,MPEG4,SVQ1,H263,H263.I)" )
     ADD_CAPABILITY( DECODER, 70 )
 MODULE_INIT_STOP
 
@@ -87,7 +109,6 @@ MODULE_DEACTIVATE_START
 MODULE_DEACTIVATE_STOP
 
 
-
 /*****************************************************************************
  * decoder_Probe: probe the decoder and return score
  *****************************************************************************
@@ -264,7 +285,7 @@ static inline void __NextFrame( videodec_thread_t *p_vdec )
     __PES_NEXT( p_vdec->p_fifo );
 }
 
-/* FIXME FIXME some of them may be wrong */
+/* FIXME FIXME some of them are wrong */
 static int i_ffmpeg_PixFmtToChroma[] = 
 {
 /* PIX_FMT_ANY = -1,PIX_FMT_YUV420P, PIX_FMT_YUV422,
@@ -654,6 +675,7 @@ static void ffmpeg_ConvertPicture( picture_t *p_pic,
 static int InitThread( videodec_thread_t *p_vdec )
 {
     int i_ffmpeg_codec; 
+    int i_tmp;
     
     if( p_vdec->p_fifo->p_demux_data )
     {
@@ -696,12 +718,33 @@ static int InitThread( videodec_thread_t *p_vdec )
     p_vdec->p_context->width  = p_vdec->format.i_width;
     p_vdec->p_context->height = p_vdec->format.i_height;
     
-/*  XXX see them and search what that means 
+/*  XXX
     p_vdec->p_context->workaround_bugs 
+      --> seems to be for msmpeg 3 but can't know what is supposed to do
+
     p_vdec->p_context->strict_std_compliance
+      --> strictly follow mpeg4 standard for decoder or encoder ??
+      
+    p_vdec->p_context->error_resilience
+      --> don't make error resilience, because of some ms encoder witch 
+      use some wrong VLC code.
 */
 
-        if (avcodec_open(p_vdec->p_context, p_vdec->p_codec) < 0)
+#if LIBAVCODEC_BUILD >= 4611
+    i_tmp = config_GetInt( p_vdec->p_fifo, "ffmpeg-workaround-bugs" );
+    p_vdec->p_context->workaround_bugs  = __MAX( __MIN( i_tmp, 99 ), 0 );
+
+    i_tmp = config_GetInt( p_vdec->p_fifo, "ffmpeg-error-resilience" );
+    p_vdec->p_context->error_resilience = __MAX( __MIN( i_tmp, 99 ), -1 );
+#endif
+#if LIBAVCODEC_BUILD >= 4614
+    if( config_GetInt( p_vdec->p_fifo, "grayscale" ) )
+    {
+        p_vdec->p_context->flags|= CODEC_FLAG_GRAY;
+    }
+#endif
+    
+    if (avcodec_open(p_vdec->p_context, p_vdec->p_codec) < 0)
     {
         msg_Err( p_vdec->p_fifo, "cannot open codec (%s)",
                                  p_vdec->psz_namecodec );
@@ -746,6 +789,7 @@ static void  DecodeThread( videodec_thread_t *p_vdec )
     {
         msg_Warn( p_vdec->p_fifo, "cannot decode one frame (%d bytes)",
                                   p_vdec->i_framesize );
+        p_vdec->i_frame_error++;
         return;
     }
     if( !b_gotpicture || avpicture.linesize[0] == 0 )

plugins/ffmpeg/ffmpeg.h

@@ -2,7 +2,7 @@
  * ffmpeg_vdec.h: video decoder using ffmpeg library
  *****************************************************************************
  * Copyright (C) 2001 VideoLAN
- * $Id: ffmpeg.h,v 1.4 2002/07/15 19:33:02 fenrir Exp $
+ * $Id: ffmpeg.h,v 1.5 2002/07/20 18:53:33 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  * 
@@ -103,4 +103,8 @@ typedef struct videodec_thread_s
     mtime_t i_pts;
     int     i_framesize;
     byte_t  *p_framedata;
+
+    int i_frame_error;
+    int i_frame_skip;
+    
 } videodec_thread_t;