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authorMichael Niedermayer <michaelni@gmx.at>2012-03-16 07:47:27 +0100
committerMichael Niedermayer <michaelni@gmx.at>2012-03-16 09:01:08 +0100
commit568e9062bd29e13e0bfa42f2ac8411d01608634d (patch)
treea78351d75b3dee8257909ccffde46880099c91bb /libavcodec/svq3.c
parent5dbc75870f486fb9c0237870eafa834a8a2066c8 (diff)
parent5effcfa76792470677a1f6bc9aa73347a87ef720 (diff)
downloadffmpeg-568e9062bd29e13e0bfa42f2ac8411d01608634d.tar.gz
Merge remote-tracking branch 'qatar/release/0.8' into release/0.10
* qatar/release/0.8: (154 commits) Update Changelog for the 0.8.1 Release dca: include libavutil/mathematics.h for possibly missing M_SQRT1_2 dca: don't use av_clip_uintp2(). snow: check reference frame indices. snow: reject unsupported chroma shifts. xa_adpcm: limit filter to prevent xa_adpcm_table[] array bounds overruns. h264: increase reference poc list from 16 to 32. h264: stricter reference limit enforcement. h264: improve parsing of broken AVC SPS Replace computations of remaining bits with calls to get_bits_left(). png: convert to bytestream2 API. roqvideo: convert to bytestream2 API. smc: port to bytestream2 API. tgq: convert to bytestream2 API. algmm: convert to bytestream2 API. jvdec: unbreak video decoding h264: Fix invalid interlaced/progressive MB combinations for direct mode prediction. libx264: add 'stats' private option for setting 2pass stats filename. libx264: fix help text for slice-max-size option. avconv: reindent ... Conflicts: Changelog RELEASE avconv.c doc/APIchanges ffplay.c libavcodec/Makefile libavcodec/aacdec.c libavcodec/alsdec.c libavcodec/atrac3.c libavcodec/avcodec.h libavcodec/dvdata.c libavcodec/fraps.c libavcodec/golomb.h libavcodec/h264.c libavcodec/h264.h libavcodec/h264_cabac.c libavcodec/h264_cavlc.c libavcodec/h264_direct.c libavcodec/h264_parser.c libavcodec/h264_ps.c libavcodec/h264idct_template.c libavcodec/indeo3.c libavcodec/kgv1dec.c libavcodec/kmvc.c libavcodec/mjpegbdec.c libavcodec/mmvideo.c libavcodec/mpegaudiodec.c libavcodec/mpegvideo.h libavcodec/options.c libavcodec/pngdec.c libavcodec/roqvideodec.c libavcodec/shorten.c libavcodec/svq3.c libavcodec/utils.c libavcodec/version.h libavcodec/wmadec.c libavcodec/xxan.c libavformat/Makefile libavformat/asfdec.c libavformat/dv.c libavformat/mov.c libavformat/nsvdec.c libavformat/utils.c libavformat/version.h libavutil/avutil.h libavutil/error.c libavutil/error.h libswscale/swscale.c libswscale/utils.c libswscale/x86/swscale_template.c tests/ref/acodec/g722 Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/svq3.c')
-rw-r--r--libavcodec/svq3.c34
1 files changed, 21 insertions, 13 deletions
diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index d96ce8ee8d..7ccc7417e0 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -175,7 +175,6 @@ void ff_svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp,
{
const int qmul = svq3_dequant_coeff[qp];
int i;
- uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
if (dc) {
dc = 13*13*((dc == 1) ? 1538*block[0] : ((qmul*(block[0] >> 3)) / 2));
@@ -201,10 +200,10 @@ void ff_svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp,
const int z3 = 17* block[i + 4*1] + 7*block[i + 4*3];
const int rr = (dc + 0x80000);
- dst[i + stride*0] = cm[ dst[i + stride*0] + (((z0 + z3)*qmul + rr) >> 20) ];
- dst[i + stride*1] = cm[ dst[i + stride*1] + (((z1 + z2)*qmul + rr) >> 20) ];
- dst[i + stride*2] = cm[ dst[i + stride*2] + (((z1 - z2)*qmul + rr) >> 20) ];
- dst[i + stride*3] = cm[ dst[i + stride*3] + (((z0 - z3)*qmul + rr) >> 20) ];
+ dst[i + stride*0] = av_clip_uint8( dst[i + stride*0] + (((z0 + z3)*qmul + rr) >> 20) );
+ dst[i + stride*1] = av_clip_uint8( dst[i + stride*1] + (((z1 + z2)*qmul + rr) >> 20) );
+ dst[i + stride*2] = av_clip_uint8( dst[i + stride*2] + (((z1 - z2)*qmul + rr) >> 20) );
+ dst[i + stride*3] = av_clip_uint8( dst[i + stride*3] + (((z0 - z3)*qmul + rr) >> 20) );
}
}
@@ -614,7 +613,7 @@ 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;
}
@@ -653,7 +652,7 @@ static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type)
if (IS_INTRA16x16(mb_type) || (s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
s->qscale += svq3_get_se_golomb(&s->gb);
- if (s->qscale > 31U){
+ if (s->qscale > 31u){
av_log(h->s.avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale);
return -1;
}
@@ -713,7 +712,7 @@ 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 +812,9 @@ 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 +835,26 @@ 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' */