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fix possible segfault and negative height

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This commit is contained in:
Jacek Jendrzej
2016-10-31 15:53:29 +01:00
parent 5804ed2d3a
commit b8849d53b5
4 changed files with 16 additions and 1 deletions
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5
src/driver/colorgradient.cpp
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@@ -62,6 +62,9 @@ uint8_t CColorGradient::limitChar(int c)
fb_pixel_t* CColorGradient::gradientColorToTransparent(fb_pixel_t col, fb_pixel_t *gradientBuf, int bSize, int /*mode*/, int /*intensity*/)
{
if (bSize < 1)
return gradientBuf;
if (gradientBuf == NULL) {
gradientBuf = (fb_pixel_t*) malloc(bSize * sizeof(fb_pixel_t));
if (gradientBuf == NULL) {
@@ -94,6 +97,8 @@ fb_pixel_t* CColorGradient::gradientColorToTransparent(fb_pixel_t col, fb_pixel_
fb_pixel_t* CColorGradient::gradientOneColor(fb_pixel_t col, fb_pixel_t *gradientBuf, int bSize, int mode, int intensity, uint8_t v_min, uint8_t v_max, uint8_t s)
{
if (bSize < 1)
return gradientBuf;
if (gradientBuf == NULL) {
gradientBuf = (fb_pixel_t*) malloc(bSize * sizeof(fb_pixel_t));