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@ -1827,6 +1827,21 @@ static void reset_ptr(const uint8_t* src[], int format) |
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} |
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} |
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static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, |
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const int linesizes[4]) |
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{ |
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const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; |
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int i; |
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for (i = 0; i < 4; i++) { |
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int plane = desc->comp[i].plane; |
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if (!data[plane] || !linesizes[plane]) |
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return 0; |
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} |
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return 1; |
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} |
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/**
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* swscale wrapper, so we don't need to export the SwsContext. |
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* Assumes planar YUV to be in YUV order instead of YVU. |
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@ -1842,6 +1857,15 @@ int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], |
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if (srcSliceH == 0) |
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return 0; |
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if (!check_image_pointers(src, c->srcFormat, srcStride)) { |
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av_log(c, AV_LOG_ERROR, "bad src image pointers\n"); |
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return 0; |
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} |
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if (!check_image_pointers(dst, c->dstFormat, dstStride)) { |
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av_log(c, AV_LOG_ERROR, "bad dst image pointers\n"); |
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return 0; |
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} |
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if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) { |
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av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n"); |
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return 0; |
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