ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavcodec/h263dec.c

 /*
  * H.263 decoder
  * Copyright (c) 2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 272 matching lines @@
             if(v==0x7F && bits_left<=8)
                 s->padding_bug_score--;
             else if(v==0x7F && ((get_bits_count(&s->gb)+8)&8) && bits_left<=16)
                 s->padding_bug_score+= 4;
             else
                 s->padding_bug_score++;
         }
     }
 
     if(s->workaround_bugs&FF_BUG_AUTODETECT){
-        if(s->padding_bug_score > -2 && !s->data_partitioning /*&& (s->divx_version || !s->resync_marker)*/)
+        if(s->padding_bug_score > -2 && !s->data_partitioning /*&& (s->divx_version>=0 || !s->resync_marker)*/)
             s->workaround_bugs |=  FF_BUG_NO_PADDING;
         else
             s->workaround_bugs &= ~FF_BUG_NO_PADDING;
     }
 
     // handle formats which don't have unique end markers
     if(s->msmpeg4_version || (s->workaround_bugs&FF_BUG_NO_PADDING)){ //FIXME perhaps solve this more cleanly
         int left= get_bits_left(&s->gb);
         int max_extra=7;
 
@@ skipping 117 matching lines @@
     if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size);
 
     /* skip if the header was thrashed */
     if (ret < 0){
         av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
         return -1;
     }
 
     avctx->has_b_frames= !s->low_delay;
 
-    if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
+    if(s->xvid_build==-1 && s->divx_version==-1 && s->lavc_build==-1){
         if(s->stream_codec_tag == AV_RL32("XVID") ||
            s->codec_tag == AV_RL32("XVID") || s->codec_tag == AV_RL32("XVIX") ||
            s->codec_tag == AV_RL32("RMP4"))
-            s->xvid_build= -1;
+            s->xvid_build= 0;
 #if 0
         if(s->codec_tag == AV_RL32("DIVX") && s->vo_type==0 && s->vol_control_parameters==1
            && s->padding_bug_score > 0 && s->low_delay) // XVID with modified fourcc
-            s->xvid_build= -1;
+            s->xvid_build= 0;
 #endif
     }
 
-    if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
+    if(s->xvid_build==-1 && s->divx_version==-1 && s->lavc_build==-1){
         if(s->codec_tag == AV_RL32("DIVX") && s->vo_type==0 && s->vol_control_parameters==0)
             s->divx_version= 400; //divx 4
     }
 
-    if(s->xvid_build && s->divx_version){
+    if(s->xvid_build>=0 && s->divx_version>=0){
         s->divx_version=
-        s->divx_build= 0;
+        s->divx_build= -1;
     }
 
     if(s->workaround_bugs&FF_BUG_AUTODETECT){
         if(s->codec_tag == AV_RL32("XVIX"))
             s->workaround_bugs|= FF_BUG_XVID_ILACE;
 
         if(s->codec_tag == AV_RL32("UMP4")){
             s->workaround_bugs|= FF_BUG_UMP4;
         }
 
         if(s->divx_version>=500 && s->divx_build<1814){
             s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
         }
 
         if(s->divx_version>502 && s->divx_build<1814){
             s->workaround_bugs|= FF_BUG_QPEL_CHROMA2;
         }
 
-        if(s->xvid_build && s->xvid_build<=3)
+        if(s->xvid_build<=3U)
             s->padding_bug_score= 256*256*256*64;
 
-        if(s->xvid_build && s->xvid_build<=1)
+        if(s->xvid_build<=1U)
             s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
 
-        if(s->xvid_build && s->xvid_build<=12)
+        if(s->xvid_build<=12U)
             s->workaround_bugs|= FF_BUG_EDGE;
 
-        if(s->xvid_build && s->xvid_build<=32)
+        if(s->xvid_build<=32U)
             s->workaround_bugs|= FF_BUG_DC_CLIP;
 
 #define SET_QPEL_FUNC(postfix1, postfix2) \
     s->dsp.put_ ## postfix1 = ff_put_ ## postfix2;\
     s->dsp.put_no_rnd_ ## postfix1 = ff_put_no_rnd_ ## postfix2;\
     s->dsp.avg_ ## postfix1 = ff_avg_ ## postfix2;
 
-        if(s->lavc_build && s->lavc_build<4653)
+        if(s->lavc_build<4653U)
             s->workaround_bugs|= FF_BUG_STD_QPEL;
 
-        if(s->lavc_build && s->lavc_build<4655)
+        if(s->lavc_build<4655U)
             s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
 
-        if(s->lavc_build && s->lavc_build<4670){
+        if(s->lavc_build<4670U){
             s->workaround_bugs|= FF_BUG_EDGE;
         }
 
-        if(s->lavc_build && s->lavc_build<=4712)
+        if(s->lavc_build<=4712U)
             s->workaround_bugs|= FF_BUG_DC_CLIP;
 
-        if(s->divx_version)
+        if(s->divx_version>=0)
             s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
 //printf("padding_bug_score: %d\n", s->padding_bug_score);
         if(s->divx_version==501 && s->divx_build==20020416)
             s->padding_bug_score= 256*256*256*64;
 
-        if(s->divx_version && s->divx_version<500){
+        if(s->divx_version<500U){
             s->workaround_bugs|= FF_BUG_EDGE;
         }
 
-        if(s->divx_version)
+        if(s->divx_version>=0)
             s->workaround_bugs|= FF_BUG_HPEL_CHROMA;
 #if 0
         if(s->divx_version==500)
             s->padding_bug_score= 256*256*256*64;
 
         /* very ugly XVID padding bug detection FIXME/XXX solve this differently
          * Let us hope this at least works.
          */
-        if(   s->resync_marker==0 && s->data_partitioning==0 && s->divx_version==0
+        if(   s->resync_marker==0 && s->data_partitioning==0 && s->divx_version==-1
            && s->codec_id==CODEC_ID_MPEG4 && s->vo_type==0)
             s->workaround_bugs|= FF_BUG_NO_PADDING;
 
-        if(s->lavc_build && s->lavc_build<4609) //FIXME not sure about the version num but a 4609 file seems ok
+        if(s->lavc_build<4609U) //FIXME not sure about the version num but a 4609 file seems ok
             s->workaround_bugs|= FF_BUG_NO_PADDING;
 #endif
     }
 
     if(s->workaround_bugs& FF_BUG_STD_QPEL){
         SET_QPEL_FUNC(qpel_pixels_tab[0][ 5], qpel16_mc11_old_c)
         SET_QPEL_FUNC(qpel_pixels_tab[0][ 7], qpel16_mc31_old_c)
         SET_QPEL_FUNC(qpel_pixels_tab[0][ 9], qpel16_mc12_old_c)
         SET_QPEL_FUNC(qpel_pixels_tab[0][11], qpel16_mc32_old_c)
         SET_QPEL_FUNC(qpel_pixels_tab[0][13], qpel16_mc13_old_c)
@@ skipping 14 matching lines @@
 
 #if 0 // dump bits per frame / qp / complexity
 {
     static FILE *f=NULL;
     if(!f) f=fopen("rate_qp_cplx.txt", "w");
     fprintf(f, "%d %d %f\n", buf_size, s->qscale, buf_size*(double)s->qscale);
 }
 #endif
 
 #if HAVE_MMX
-    if(s->codec_id == CODEC_ID_MPEG4 && s->xvid_build && avctx->idct_algo == FF_IDCT_AUTO && (mm_flags & FF_MM_MMX)){
+    if(s->codec_id == CODEC_ID_MPEG4 && s->xvid_build>=0 && avctx->idct_algo == FF_IDCT_AUTO && (mm_flags & FF_MM_MMX)){
         avctx->idct_algo= FF_IDCT_XVIDMMX;
         avctx->coded_width= 0; // force reinit
 //        dsputil_init(&s->dsp, avctx);
         s->picture_number=0;
     }
 #endif
 
         /* After H263 & mpeg4 header decode we have the height, width,*/
         /* and other parameters. So then we could init the picture   */
         /* FIXME: By the way H263 decoder is evolving it should have */
@@ skipping 48 matching lines @@
         s->me.qpel_put= s->dsp.put_no_rnd_qpel_pixels_tab;
         s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
     }
 
     if(MPV_frame_start(s, avctx) < 0)
         return -1;
 
     if (!s->divx_packed) ff_thread_finish_setup(avctx);
 
     if (CONFIG_MPEG4_VDPAU_DECODER && (s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)) {
-        ff_vdpau_mpeg4_decode_picture(s, buf, buf_size);
+        ff_vdpau_mpeg4_decode_picture(s, s->gb.buffer, s->gb.buffer_end - s->gb.buffer);
         goto frame_end;
     }
 
     if (avctx->hwaccel) {
-        if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
+        if (avctx->hwaccel->start_frame(avctx, s->gb.buffer, s->gb.buffer_end - s->gb.buffer) < 0)
             return -1;
     }
 
     ff_er_frame_start(s);
 
     //the second part of the wmv2 header contains the MB skip bits which are stored in current_picture->mb_type
     //which is not available before MPV_frame_start()
     if (CONFIG_WMV2_DECODER && s->msmpeg4_version==5){
         ret = ff_wmv2_decode_secondary_picture_header(s);
         if(ret<0) return ret;
@@ skipping 19 matching lines @@
 
         decode_slice(s);
     }
 
     if (s->h263_msmpeg4 && s->msmpeg4_version<4 && s->pict_type==FF_I_TYPE)
         if(!CONFIG_MSMPEG4_DECODER || msmpeg4_decode_ext_header(s, buf_size) < 0){
             s->error_status_table[s->mb_num-1]= AC_ERROR|DC_ERROR|MV_ERROR;
         }
 
     assert(s->bitstream_buffer_size==0);
+frame_end:
     /* divx 5.01+ bistream reorder stuff */
     if(s->codec_id==CODEC_ID_MPEG4 && s->divx_packed){
         int current_pos= get_bits_count(&s->gb)>>3;
         int startcode_found=0;
 
         if(buf_size - current_pos > 5){
             int i;
             for(i=current_pos; i<buf_size-3; i++){
                 if(buf[i]==0 && buf[i+1]==0 && buf[i+2]==1 && buf[i+3]==0xB6){
                     startcode_found=1;
                     break;
                 }
             }
         }
-        if(s->gb.buffer == s->bitstream_buffer && buf_size>7 && s->xvid_build){ //xvid style
+        if(s->gb.buffer == s->bitstream_buffer && buf_size>7 && s->xvid_build>=0){ //xvid style
             startcode_found=1;
             current_pos=0;
         }
 
         if(startcode_found){
             av_fast_malloc(
                 &s->bitstream_buffer,
                 &s->allocated_bitstream_buffer_size,
                 buf_size - current_pos + FF_INPUT_BUFFER_PADDING_SIZE);
             if (!s->bitstream_buffer)
                 return AVERROR(ENOMEM);
             memcpy(s->bitstream_buffer, buf + current_pos, buf_size - current_pos);
             s->bitstream_buffer_size= buf_size - current_pos;
         }
     }
 
 intrax8_decoded:
     ff_er_frame_end(s);
 
-frame_end:
     if (avctx->hwaccel) {
         if (avctx->hwaccel->end_frame(avctx) < 0)
             return -1;
     }
 
     MPV_frame_end(s);
 
 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
 assert(s->current_picture.pict_type == s->pict_type);
     if (s->pict_type == FF_B_TYPE || s->low_delay) {
@@ skipping 21 matching lines @@
     sizeof(MpegEncContext),
     ff_h263_decode_init,
     NULL,
     ff_h263_decode_end,
     ff_h263_decode_frame,
     CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
     .flush= ff_mpeg_flush,
     .long_name= NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2"),
     .pix_fmts= ff_hwaccel_pixfmt_list_420,
 };