From 255b3ac27d78be9c8ed57f1c3ba90d28e0ffb63d Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 28 Aug 2002 21:47:28 +0000 Subject: [PATCH] use extradata for h263_long_vector mode detection Originally committed as revision 876 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/rv10.c | 29 +++++++++++++++++++++++------ 1 file changed, 23 insertions(+), 6 deletions(-) diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c index 373ae6f..e484ee2 100644 --- a/libavcodec/rv10.c +++ b/libavcodec/rv10.c @@ -290,7 +290,7 @@ static int rv10_decode_picture_header(MpegEncContext *s) else s->pict_type = I_TYPE; //printf("h:%d ver:%d\n",h,s->rv10_version); -if(!marker) printf("marker missing\n"); + if(!marker) printf("marker missing\n"); pb_frame = get_bits(&s->gb, 1); #ifdef DEBUG @@ -335,12 +335,9 @@ if(!marker) printf("marker missing\n"); } unk= get_bits(&s->gb, 3); /* ignored */ //printf("%d\n", unk); -s->h263_long_vectors = s->mb_num<100; //FIXME check if this is ok (100 i just guessed) s->f_code = 1; s->unrestricted_mv = 1; -#if 0 - s->h263_long_vectors = 1; -#endif + return mb_count; } @@ -356,7 +353,27 @@ static int rv10_decode_init(AVCodecContext *avctx) s->height = avctx->height; s->h263_rv10 = 1; - s->rv10_version = avctx->sub_id; + if(avctx->extradata_size >= 8){ + switch(((uint32_t*)avctx->extradata)[1]){ + case 0x10000000: + s->rv10_version= 0; + s->h263_long_vectors=0; + break; + case 0x10003000: + s->rv10_version= 3; + s->h263_long_vectors=1; + break; + case 0x10003001: + s->rv10_version= 3; + s->h263_long_vectors=0; + break; + default: + fprintf(stderr, "unknown header %X\n", ((uint32_t*)avctx->extradata)[1]); + } + }else{ + // for backward compatibility + s->rv10_version= avctx->sub_id; + } s->flags= avctx->flags; -- 2.7.4