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Fix invalid memory usage when using Image.convert
(cherry picked from commit 34c1a2beaa8ae92a445b85458d3681f60cd5216f)
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@ -370,7 +370,7 @@ static void _convert(int p_width, int p_height, const uint8_t *p_src, uint8_t *p
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const uint8_t *rofs = &p_src[((y * p_width) + x) * (read_bytes + (read_alpha ? 1 : 0))];
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uint8_t *wofs = &p_dst[((y * p_width) + x) * (write_bytes + (write_alpha ? 1 : 0))];
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uint8_t rgba[4];
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uint8_t rgba[4] = { 0, 0, 0, 255 };
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if (read_gray) {
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rgba[0] = rofs[0];
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@ -388,7 +388,7 @@ static void _convert(int p_width, int p_height, const uint8_t *p_src, uint8_t *p
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if (write_gray) {
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//TODO: not correct grayscale, should use fixed point version of actual weights
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wofs[0] = uint8_t((uint16_t(rofs[0]) + uint16_t(rofs[1]) + uint16_t(rofs[2])) / 3);
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wofs[0] = uint8_t((uint16_t(rgba[0]) + uint16_t(rgba[1]) + uint16_t(rgba[2])) / 3);
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} else {
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for (uint32_t i = 0; i < write_bytes; i++) {
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wofs[i] = rgba[i];
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