diff options
Diffstat (limited to 'libavcodec/svq3.c')
| -rw-r--r-- | libavcodec/svq3.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c index d96ce8ee8d..aec56fd161 100644 --- a/libavcodec/svq3.c +++ b/libavcodec/svq3.c @@ -614,7 +614,7 @@ static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type) dir = i_mb_type_info[mb_type - 8].pred_mode; dir = (dir >> 1) ^ 3*(dir & 1) ^ 1; - if ((h->intra16x16_pred_mode = ff_h264_check_intra16x16_pred_mode(h, dir)) == -1){ + if ((h->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, dir, 0)) == -1){ av_log(h->s.avctx, AV_LOG_ERROR, "check_intra_pred_mode = -1\n"); return -1; } @@ -713,7 +713,7 @@ static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type) s->current_picture.f.mb_type[mb_xy] = mb_type; if (IS_INTRA(mb_type)) { - h->chroma_pred_mode = ff_h264_check_intra_chroma_pred_mode(h, DC_PRED8x8); + h->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, DC_PRED8x8, 1); } return 0; @@ -813,7 +813,9 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) MpegEncContext *s = &h->s; int m; unsigned char *extradata; + unsigned char *extradata_end; unsigned int size; + int marker_found = 0; if (ff_h264_decode_init(avctx) < 0) return -1; @@ -834,19 +836,26 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) /* prowl for the "SEQH" marker in the extradata */ extradata = (unsigned char *)avctx->extradata; - for (m = 0; m < avctx->extradata_size; m++) { - if (!memcmp(extradata, "SEQH", 4)) - break; - extradata++; + extradata_end = avctx->extradata + avctx->extradata_size; + if (extradata) { + for (m = 0; m + 8 < avctx->extradata_size; m++) { + if (!memcmp(extradata, "SEQH", 4)) { + marker_found = 1; + break; + } + extradata++; + } } /* if a match was found, parse the extra data */ - if (extradata && !memcmp(extradata, "SEQH", 4)) { + if (marker_found) { GetBitContext gb; int frame_size_code; size = AV_RB32(&extradata[4]); + if (size > extradata_end - extradata - 8) + return AVERROR_INVALIDDATA; init_get_bits(&gb, extradata + 8, size*8); /* 'frame size code' and optional 'width, height' */ |