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Fri, 2 Jan 2026 20:42:31 +0200 (EET) MIME-Version: 1.0 To: ffmpeg-devel@ffmpeg.org Date: Fri, 02 Jan 2026 18:42:31 -0000 Message-ID: <176737935179.25.998138318807454797@4457048688e7> Message-ID-Hash: 3NWF5RZC3ENEAWKSUKPINOID6T7XEGRL X-Message-ID-Hash: 3NWF5RZC3ENEAWKSUKPINOID6T7XEGRL X-MailFrom: code@ffmpeg.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; header-match-ffmpeg-devel.ffmpeg.org-0; header-match-ffmpeg-devel.ffmpeg.org-1; header-match-ffmpeg-devel.ffmpeg.org-2; header-match-ffmpeg-devel.ffmpeg.org-3; emergency; member-moderation X-Mailman-Version: 3.3.10 Precedence: list Reply-To: FFmpeg development discussions and patches Subject: [FFmpeg-devel] [PR] avcodec/vc1dec: Reduce size of allocation (PR #21360) List-Id: FFmpeg development discussions and patches Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: mkver via ffmpeg-devel Cc: mkver Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Archived-At: List-Archive: List-Post: PR #21360 opened by mkver URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21360 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21360.patch blk_mv_type is only set for block 0-3, not for chroma blocks, so it only needs four elements per MB. >>From 98aa4e2bc07ea5ec764f763ad0a2475ed6171f00 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Fri, 2 Jan 2026 19:21:59 +0100 Subject: [PATCH] avcodec/vc1dec: Reduce size of allocation blk_mv_type is only set for block 0-3, not for chroma blocks, so it only needs four elements per MB. Signed-off-by: Andreas Rheinhardt --- libavcodec/vc1dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c index 6caa418134..72bc810ce7 100644 --- a/libavcodec/vc1dec.c +++ b/libavcodec/vc1dec.c @@ -399,7 +399,7 @@ static av_cold int vc1_decode_init_alloc_tables(VC1Context *v) v->mb_type = v->mb_type_base + s->b8_stride + 1; /* allocate memory to store block level MV info */ - v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2); + v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1)); if (!v->blk_mv_type_base) return AVERROR(ENOMEM); v->blk_mv_type = v->blk_mv_type_base + s->b8_stride + 1; -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org