lavc: add seperate AVCodec for CODEC_ID_H263P so demuxers can use that id.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/allcodecs.c

@@ -128,7 +128,7 @@ void avcodec_register_all(void)
     REGISTER_ENCDEC  (H261, h261);
     REGISTER_ENCDEC  (H263, h263);
     REGISTER_DECODER (H263I, h263i);
-    REGISTER_ENCODER (H263P, h263p);
+    REGISTER_ENCDEC  (H263P, h263p);
     REGISTER_DECODER (H264, h264);
     REGISTER_DECODER (H264_CRYSTALHD, h264_crystalhd);
     REGISTER_DECODER (H264_VDPAU, h264_vdpau);

libavcodec/h263dec.c

@@ -66,6 +66,7 @@ av_cold int ff_h263_decode_init(AVCodecContext *avctx)
     /* select sub codec */
     switch(avctx->codec->id) {
     case CODEC_ID_H263:
+    case CODEC_ID_H263P:
         s->unrestricted_mv= 0;
         avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
         break;
@@ -111,7 +112,7 @@ av_cold int ff_h263_decode_init(AVCodecContext *avctx)
     avctx->hwaccel= ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
 
     /* for h263, we allocate the images after having read the header */
-    if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4)
+    if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_H263P && avctx->codec->id != CODEC_ID_MPEG4)
         if (ff_MPV_common_init(s) < 0)
             return -1;
 
@@ -373,6 +374,8 @@ uint64_t time= rdtsc();
             next= ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
         }else if(CONFIG_H263_DECODER && s->codec_id==CODEC_ID_H263){
             next= ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
+        }else if(CONFIG_H263P_DECODER && s->codec_id==CODEC_ID_H263P){
+            next= ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
         }else{
             av_log(s->avctx, AV_LOG_ERROR, "this codec does not support truncated bitstreams\n");
             return -1;
@@ -770,3 +773,19 @@ AVCodec ff_h263_decoder = {
     .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,
 };
+
+AVCodec ff_h263p_decoder = {
+    .name           = "h263p",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = CODEC_ID_H263P,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_h263_decode_init,
+    .close          = ff_h263_decode_end,
+    .decode         = ff_h263_decode_frame,
+    .capabilities   = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
+                      CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
+    .flush          = ff_mpeg_flush,
+    .max_lowres     = 3,
+    .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,
+};