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From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Subject: [FFmpeg-devel] [PATCH 4/5] avcodec/mpegvideo_dec: Use av_fast_padded_malloc where appropriate
Date: Mon, 31 Jul 2023 13:13:34 +0200
Message-ID: <GV1P250MB07370EE4FE5F68D89CFA4A688F05A@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <GV1P250MB0737C3EDF15EA842378D8DC58F05A@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM>

Will probably also fix Coverity issue #1473529.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/mpegvideo_dec.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/libavcodec/mpegvideo_dec.c b/libavcodec/mpegvideo_dec.c
index 670b0912e2..16e8b9193a 100644
--- a/libavcodec/mpegvideo_dec.c
+++ b/libavcodec/mpegvideo_dec.c
@@ -154,21 +154,16 @@ do {\
     s->divx_packed  = s1->divx_packed;
 
     if (s1->bitstream_buffer) {
-        if (s1->bitstream_buffer_size +
-            AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
-            av_fast_malloc(&s->bitstream_buffer,
-                           &s->allocated_bitstream_buffer_size,
-                           s1->allocated_bitstream_buffer_size);
-            if (!s->bitstream_buffer) {
-                s->bitstream_buffer_size = 0;
-                return AVERROR(ENOMEM);
-            }
+        av_fast_padded_malloc(&s->bitstream_buffer,
+                              &s->allocated_bitstream_buffer_size,
+                              s1->bitstream_buffer_size);
+        if (!s->bitstream_buffer) {
+            s->bitstream_buffer_size = 0;
+            return AVERROR(ENOMEM);
         }
         s->bitstream_buffer_size = s1->bitstream_buffer_size;
         memcpy(s->bitstream_buffer, s1->bitstream_buffer,
                s1->bitstream_buffer_size);
-        memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
-               AV_INPUT_BUFFER_PADDING_SIZE);
     }
 
     // linesize-dependent scratch buffer allocation
-- 
2.34.1

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  parent reply	other threads:[~2023-07-31 11:45 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-31 11:08 [FFmpeg-devel] [PATCH 1/5] fftools/ffprobe: Fix memleak Andreas Rheinhardt
2023-07-31 11:13 ` [FFmpeg-devel] [PATCH 2/5] avformat/hls_sample_encryption: Always free AC3HeaderInfo on error Andreas Rheinhardt
2023-08-02  5:20   ` Andreas Rheinhardt
2023-07-31 11:13 ` [FFmpeg-devel] [PATCH 3/5] avcodec/nvenc: Remove always-true check Andreas Rheinhardt
2023-07-31 11:13 ` Andreas Rheinhardt [this message]
2023-07-31 11:13 ` [FFmpeg-devel] [PATCH 5/5] avcodec/sga: Don't use GetBit-API for byte-aligned reads Andreas Rheinhardt
2023-07-31 11:43   ` Paul B Mahol
2023-07-31 11:44     ` Andreas Rheinhardt
2023-07-31 12:57 ` [FFmpeg-devel] [PATCH 1/5] fftools/ffprobe: Fix memleak James Almer
2023-08-02  5:13 ` Stefano Sabatini

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