mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/sanm: Optimize fill_frame() with av_memcpy_backptr()
Fixes: Timeout (76 sec -> 24 sec) Fixes: 15043/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SANM_fuzzer-5699856238116864 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -1358,8 +1358,10 @@ static int read_frame_header(SANMVideoContext *ctx, SANMFrameHeader *hdr)
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static void fill_frame(uint16_t *pbuf, int buf_size, uint16_t color)
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static void fill_frame(uint16_t *pbuf, int buf_size, uint16_t color)
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{
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{
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while (buf_size--)
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if (buf_size--) {
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*pbuf++ = color;
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*pbuf++ = color;
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av_memcpy_backptr((uint8_t*)pbuf, 2, 2*buf_size);
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}
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}
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}
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static int copy_output(SANMVideoContext *ctx, SANMFrameHeader *hdr)
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static int copy_output(SANMVideoContext *ctx, SANMFrameHeader *hdr)
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