ffmpeg | branch: master | Andreas Rheinhardt <[email protected]> | Fri Mar 26 09:21:22 2021 +0100| [f83976344ecdc776ec827b06b19c2fcaa2b8ccdb] | committer: Andreas Rheinhardt
avcodec/proresdec2: Don't apply non-zero offset to null pointer Affected ProRes without alpha; affected 32 FATE tests, e.g. prores-422, prores-422_proxy, prores-422_lt or matroska-prores-header-insertion-bz2. Signed-off-by: Andreas Rheinhardt <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f83976344ecdc776ec827b06b19c2fcaa2b8ccdb --- libavcodec/proresdec2.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/libavcodec/proresdec2.c b/libavcodec/proresdec2.c index 136f341c08..5a01c89c48 100644 --- a/libavcodec/proresdec2.c +++ b/libavcodec/proresdec2.c @@ -623,8 +623,8 @@ static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int AVFrame *pic = ctx->frame; int i, hdr_size, qscale, log2_chroma_blocks_per_mb; int luma_stride, chroma_stride; - int y_data_size, u_data_size, v_data_size, a_data_size; - uint8_t *dest_y, *dest_u, *dest_v, *dest_a; + int y_data_size, u_data_size, v_data_size, a_data_size, offset; + uint8_t *dest_y, *dest_u, *dest_v; LOCAL_ALIGNED_16(int16_t, qmat_luma_scaled, [64]); LOCAL_ALIGNED_16(int16_t, qmat_chroma_scaled,[64]); int mb_x_shift; @@ -676,16 +676,16 @@ static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int log2_chroma_blocks_per_mb = 1; } - dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5); + offset = (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5); + dest_y = pic->data[0] + offset; dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift); dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift); - dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5); if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) { dest_y += pic->linesize[0]; dest_u += pic->linesize[1]; dest_v += pic->linesize[2]; - dest_a += pic->linesize[3]; + offset += pic->linesize[3]; } ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride, @@ -722,10 +722,12 @@ static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int } /* decode alpha plane if available */ - if (ctx->alpha_info && pic->data[3] && a_data_size) + if (ctx->alpha_info && pic->data[3] && a_data_size) { + uint8_t *dest_a = pic->data[3] + offset; decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride, buf + y_data_size + u_data_size + v_data_size, a_data_size, slice->mb_count); + } slice->ret = 0; return 0; _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
