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From: Zhao Zhili <quinkblack-at-foxmail.com@ffmpeg.org>
To: ffmpeg-devel@ffmpeg.org
Cc: Zhao Zhili <zhilizhao@tencent.com>
Subject: [FFmpeg-devel] [PATCH] avcodec/mediacodecdec: Reset optional fields when parse format
Date: Tue,  1 Apr 2025 18:11:58 +0800
Message-ID: <tencent_B376AB234EFA70AA2D159A3B40469A319F08@qq.com> (raw)

From: Zhao Zhili <zhilizhao@tencent.com>

Parse format can be called multiple times, e.g., when resolution
changed. If getInt32 fails, optional member variables will retain
their previously set values without modification. This can be a
big problem for new resolution with old crop info.

This patch reset optional fields to zero when getInt32 failed.
---
 libavcodec/mediacodecdec_common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/mediacodecdec_common.c b/libavcodec/mediacodecdec_common.c
index 8a270f2f29..ae336ab835 100644
--- a/libavcodec/mediacodecdec_common.c
+++ b/libavcodec/mediacodecdec_common.c
@@ -537,6 +537,8 @@ static int mediacodec_wrap_sw_buffer(AVCodecContext *avctx,
         av_log(avctx, AV_LOG_ERROR, "Could not get %s from format %s\n", key, format); \
         ret = AVERROR_EXTERNAL;                                                        \
         goto fail;                                                                     \
+    } else {                                                                           \
+        (name) = 0;                                                                    \
     }                                                                                  \
 } while (0)                                                                            \
 
-- 
2.46.0

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                 reply	other threads:[~2025-04-01 10:12 UTC|newest]

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