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| author | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2015-03-03 21:31:15 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2015-03-05 14:49:16 +0100 |
| commit | 66624ed6319cb1a959256fe1a717fec5b748fbfa (patch) | |
| tree | e10aa0329f8850e7f67bc5978a830e7f66118ca6 | |
| parent | 9c09fbd8053292267cdc4b542913ceced43ea3a9 (diff) | |
| download | ffmpeg-66624ed6319cb1a959256fe1a717fec5b748fbfa.tar.gz | |
rv10: check size of s->mb_width * s->mb_height
If it doesn't fit into 12 bits it triggers an assertion.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
| -rw-r--r-- | libavcodec/mpegvideo.h | 2 | ||||
| -rw-r--r-- | libavcodec/mpegvideo_enc.c | 7 | ||||
| -rw-r--r-- | libavcodec/rv10enc.c | 8 |
3 files changed, 13 insertions, 4 deletions
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h index e3890381f8..a412ec7a0c 100644 --- a/libavcodec/mpegvideo.h +++ b/libavcodec/mpegvideo.h @@ -840,7 +840,7 @@ extern const uint8_t ff_aic_dc_scale_table[32]; extern const uint8_t ff_h263_chroma_qscale_table[32]; /* rv10.c */ -void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number); +int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number); int ff_rv_decode_dc(MpegEncContext *s, int n); void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number); diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c index 9e155b0c42..38c42fe192 100644 --- a/libavcodec/mpegvideo_enc.c +++ b/libavcodec/mpegvideo_enc.c @@ -3441,8 +3441,11 @@ static int encode_picture(MpegEncContext *s, int picture_number) ff_msmpeg4_encode_picture_header(s, picture_number); else if (CONFIG_MPEG4_ENCODER && s->h263_pred) ff_mpeg4_encode_picture_header(s, picture_number); - else if (CONFIG_RV10_ENCODER && s->codec_id == AV_CODEC_ID_RV10) - ff_rv10_encode_picture_header(s, picture_number); + else if (CONFIG_RV10_ENCODER && s->codec_id == AV_CODEC_ID_RV10) { + ret = ff_rv10_encode_picture_header(s, picture_number); + if (ret < 0) + return ret; + } else if (CONFIG_RV20_ENCODER && s->codec_id == AV_CODEC_ID_RV20) ff_rv20_encode_picture_header(s, picture_number); else if (CONFIG_FLV_ENCODER && s->codec_id == AV_CODEC_ID_FLV1) diff --git a/libavcodec/rv10enc.c b/libavcodec/rv10enc.c index ca760524a8..2eca9c3c88 100644 --- a/libavcodec/rv10enc.c +++ b/libavcodec/rv10enc.c @@ -28,7 +28,7 @@ #include "mpegvideo.h" #include "put_bits.h" -void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number) +int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number) { int full_frame= 0; @@ -48,12 +48,18 @@ void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number) /* if multiple packets per frame are sent, the position at which to display the macroblocks is coded here */ if(!full_frame){ + if (s->mb_width * s->mb_height >= (1U << 12)) { + avpriv_report_missing_feature(s->avctx, "Encoding frames with %d (>= 4096) macroblocks", + s->mb_width * s->mb_height); + return AVERROR(ENOSYS); + } put_bits(&s->pb, 6, 0); /* mb_x */ put_bits(&s->pb, 6, 0); /* mb_y */ put_bits(&s->pb, 12, s->mb_width * s->mb_height); } put_bits(&s->pb, 3, 0); /* ignored */ + return 0; } FF_MPV_GENERIC_CLASS(rv10) |