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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-10-02 03:39:59 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-10-02 05:48:40 +0200 |
| commit | 54a1e7b0f28ad4d5d9d50969df2cf786a9aa7e27 (patch) | |
| tree | 25d7806827873f71156fc540e6ab589c2ec41354 /libavcodec/4xm.c | |
| parent | 2c282e96796039b73f0a4b42c97a4432ec51fcd4 (diff) | |
| download | ffmpeg-54a1e7b0f28ad4d5d9d50969df2cf786a9aa7e27.tar.gz | |
4xm decoder: print some error messages in case of errors.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 1008f639e2ebaa2b3d48ac765ca49c8869042d75)
Diffstat (limited to 'libavcodec/4xm.c')
| -rw-r--r-- | libavcodec/4xm.c | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/libavcodec/4xm.c b/libavcodec/4xm.c index 7b5df62a43..92717d0fef 100644 --- a/libavcodec/4xm.c +++ b/libavcodec/4xm.c @@ -330,8 +330,10 @@ static void decode_p_block(FourXContext *f, uint16_t *dst, uint16_t *src, int lo assert(code>=0 && code<=6); if(code == 0){ - if (f->bytestream_end - f->bytestream < 1) + if (f->bytestream_end - f->bytestream < 1){ + av_log(f->avctx, AV_LOG_ERROR, "bytestream overread\n"); return; + } src += f->mv[ *f->bytestream++ ]; if(start > src || src > end){ av_log(f->avctx, AV_LOG_ERROR, "mv out of pic\n"); @@ -349,23 +351,31 @@ static void decode_p_block(FourXContext *f, uint16_t *dst, uint16_t *src, int lo }else if(code == 3 && f->version<2){ mcdc(dst, src, log2w, h, stride, 1, 0); }else if(code == 4){ - if (f->bytestream_end - f->bytestream < 1) + if (f->bytestream_end - f->bytestream < 1){ + av_log(f->avctx, AV_LOG_ERROR, "bytestream overread\n"); return; + } src += f->mv[ *f->bytestream++ ]; if(start > src || src > end){ av_log(f->avctx, AV_LOG_ERROR, "mv out of pic\n"); return; } - if (f->wordstream_end - f->wordstream < 1) + if (f->wordstream_end - f->wordstream < 1){ + av_log(f->avctx, AV_LOG_ERROR, "wordstream overread\n"); return; + } mcdc(dst, src, log2w, h, stride, 1, av_le2ne16(*f->wordstream++)); }else if(code == 5){ - if (f->wordstream_end - f->wordstream < 1) + if (f->wordstream_end - f->wordstream < 1){ + av_log(f->avctx, AV_LOG_ERROR, "wordstream overread\n"); return; + } mcdc(dst, src, log2w, h, stride, 0, av_le2ne16(*f->wordstream++)); }else if(code == 6){ - if (f->wordstream_end - f->wordstream < 2) + if (f->wordstream_end - f->wordstream < 2){ + av_log(f->avctx, AV_LOG_ERROR, "wordstream overread\n"); return; + } if(log2w){ dst[0] = av_le2ne16(*f->wordstream++); dst[1] = av_le2ne16(*f->wordstream++); @@ -753,8 +763,10 @@ static int decode_frame(AVCodecContext *avctx, const int whole_size= AV_RL32(buf+16); CFrameBuffer *cfrm; - if (data_size < 0 || whole_size < 0) + if (data_size < 0 || whole_size < 0){ + av_log(f->avctx, AV_LOG_ERROR, "sizes invalid\n"); return AVERROR_INVALIDDATA; + } for(i=0; i<CFRAME_BUFFER_COUNT; i++){ if(f->cfrm[i].id && f->cfrm[i].id < avctx->frame_number) @@ -817,12 +829,16 @@ static int decode_frame(AVCodecContext *avctx, if(frame_4cc == AV_RL32("ifr2")){ p->pict_type= AV_PICTURE_TYPE_I; - if(decode_i2_frame(f, buf-4, frame_size) < 0) + if(decode_i2_frame(f, buf-4, frame_size) < 0){ + av_log(f->avctx, AV_LOG_ERROR, "decode i2 frame failed\n"); return -1; + } }else if(frame_4cc == AV_RL32("ifrm")){ p->pict_type= AV_PICTURE_TYPE_I; - if(decode_i_frame(f, buf, frame_size) < 0) + if(decode_i_frame(f, buf, frame_size) < 0){ + av_log(f->avctx, AV_LOG_ERROR, "decode i frame failed\n"); return -1; + } }else if(frame_4cc == AV_RL32("pfrm") || frame_4cc == AV_RL32("pfr2")){ if(!f->last_picture.data[0]){ f->last_picture.reference= 1; @@ -833,8 +849,10 @@ static int decode_frame(AVCodecContext *avctx, } p->pict_type= AV_PICTURE_TYPE_P; - if(decode_p_frame(f, buf, frame_size) < 0) + if(decode_p_frame(f, buf, frame_size) < 0){ + av_log(f->avctx, AV_LOG_ERROR, "decode p frame failed\n"); return -1; + } }else if(frame_4cc == AV_RL32("snd_")){ av_log(avctx, AV_LOG_ERROR, "ignoring snd_ chunk length:%d\n", buf_size); }else{ |