diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2011-12-24 01:19:33 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-12-24 01:41:43 +0100 |
| commit | df825c956af76ae04af18dc00403bf1a0e745af1 (patch) | |
| tree | 45759720297eb50f0e8b0057c1b3217761eb2237 /libavcodec | |
| parent | d38580a7bb811028b5d3bac4924fd486c06b816f (diff) | |
| parent | d912a30c7d5cf9b8fdb26402804c9b0f999b4ff1 (diff) | |
| download | ffmpeg-df825c956af76ae04af18dc00403bf1a0e745af1.tar.gz | |
Merge remote-tracking branch 'qatar/release/0.7' into release/0.8
This merge is primary for metadata, theres little actually changed
except cosmetics
* qatar/release/0.7:
4xm: Add a check in decode_i_frame to prevent buffer overreads
wma: initialize prev_block_len_bits, next_block_len_bits, and block_len_bits.
Update RELEASE file for 0.7.3
swscale: #include "libavutil/mathematics.h"
vp3dec: Check coefficient index in vp3_dequant()
svq1dec: call avcodec_set_dimensions() after dimensions changed.
swscale: Readd #define _SVID_SOURCE
Conflicts:
RELEASE
libavcodec/4xm.c
libavcodec/vp3.c
libswscale/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/4xm.c | 11 | ||||
| -rw-r--r-- | libavcodec/vp3.c | 10 | ||||
| -rw-r--r-- | libavcodec/wma.c | 3 |
3 files changed, 18 insertions, 6 deletions
diff --git a/libavcodec/4xm.c b/libavcodec/4xm.c index 3f8061f942..bbddef4876 100644 --- a/libavcodec/4xm.c +++ b/libavcodec/4xm.c @@ -694,10 +694,13 @@ static int decode_i_frame(FourXContext *f, const uint8_t *buf, int length){ unsigned int prestream_size; const uint8_t *prestream; - if (bitstream_size > (1<<26) || length < bitstream_size + 12) - return -1; - prestream_size = 4*AV_RL32(buf + bitstream_size + 4); - prestream = buf + bitstream_size + 12; + if (length < bitstream_size + 12) { + av_log(f->avctx, AV_LOG_ERROR, "packet size too small\n"); + return AVERROR_INVALIDDATA; + } + + prestream_size = 4 * AV_RL32(buf + bitstream_size + 4); + prestream = buf + bitstream_size + 12; if (prestream_size > (1<<26) || prestream_size != length - (bitstream_size + 12)){ diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 2f07af8c4b..3abc78b85a 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -1514,7 +1514,10 @@ static void render_slice(Vp3DecodeContext *s, int slice) /* invert DCT and place (or add) in final output */ if (s->all_fragments[i].coding_method == MODE_INTRA) { - vp3_dequant(s, s->all_fragments + i, plane, 0, block); + int index; + index = vp3_dequant(s, s->all_fragments + i, plane, 0, block); + if (index > 63) + continue; if(s->avctx->idct_algo!=FF_IDCT_VP3) block[0] += 128<<3; s->dsp.idct_put( @@ -1522,7 +1525,10 @@ static void render_slice(Vp3DecodeContext *s, int slice) stride, block); } else { - if (vp3_dequant(s, s->all_fragments + i, plane, 1, block)) { + int index = vp3_dequant(s, s->all_fragments + i, plane, 1, block); + if (index > 63) + continue; + if (index > 0) { s->dsp.idct_add( output_plane + first_pixel, stride, diff --git a/libavcodec/wma.c b/libavcodec/wma.c index 67599b7eab..8f464619c2 100644 --- a/libavcodec/wma.c +++ b/libavcodec/wma.c @@ -137,6 +137,9 @@ int ff_wma_init(AVCodecContext *avctx, int flags2) /* compute MDCT block size */ s->frame_len_bits = ff_wma_get_frame_len_bits(s->sample_rate, s->version, 0); + s->next_block_len_bits = s->frame_len_bits; + s->prev_block_len_bits = s->frame_len_bits; + s->block_len_bits = s->frame_len_bits; s->frame_len = 1 << s->frame_len_bits; if (s->use_variable_block_len) { |