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rv34: use AVERROR return values in ff_rv34_decode_frame()

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Also adds an error message.
This commit is contained in:
Janne Grunau 2012-02-13 21:14:19 +01:00
parent bf61ef2316
commit 29330721b0
1 changed files with 8 additions and 4 deletions
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12
libavcodec/rv34.c
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@ -1652,15 +1652,19 @@ int ff_rv34_decode_frame(AVCodecContext *avctx,
if(get_slice_offset(avctx, slices_hdr, 0) < 0 ||
get_slice_offset(avctx, slices_hdr, 0) > buf_size){
av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
return -1;
return AVERROR_INVALIDDATA;
}
init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, 0), (buf_size-get_slice_offset(avctx, slices_hdr, 0))*8);
if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){
av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n");
return -1;
return AVERROR_INVALIDDATA;
}
if ((!s->last_picture_ptr || !s->last_picture_ptr->f.data[0]) &&
si.type == AV_PICTURE_TYPE_B) {
av_log(avctx, AV_LOG_ERROR, "Invalid decoder state: B-frame without "
"reference data.\n");
return AVERROR_INVALIDDATA;
}
if ((!s->last_picture_ptr || !s->last_picture_ptr->f.data[0]) && si.type == AV_PICTURE_TYPE_B)
return -1;
if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B)
|| (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I)
|| avctx->skip_frame >= AVDISCARD_ALL)