diff options
Diffstat (limited to 'base/gtk_util.cc')
| -rw-r--r-- | base/gtk_util.cc | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/base/gtk_util.cc b/base/gtk_util.cc index 79fc485..b526aca 100644 --- a/base/gtk_util.cc +++ b/base/gtk_util.cc @@ -4,6 +4,8 @@ #include "base/gtk_util.h" +#include <stdlib.h> + namespace gtk_util { namespace { @@ -46,4 +48,24 @@ std::string RemoveWindowsStyleAccelerators(const std::string& label) { return ConvertAmperstandsTo(label, ""); } +uint8_t* BGRAToRGBA(const uint8_t* pixels, int width, int height, int stride) { + if (stride == 0) + stride = width * 4; + + uint8_t* new_pixels = static_cast<uint8_t*>(malloc(height * stride)); + + // We have to copy the pixels and swap from BGRA to RGBA. + for (int i = 0; i < height; ++i) { + for (int j = 0; j < width; ++j) { + int idx = i * stride + j * 4; + new_pixels[idx] = pixels[idx + 2]; + new_pixels[idx + 1] = pixels[idx + 1]; + new_pixels[idx + 2] = pixels[idx]; + new_pixels[idx + 3] = pixels[idx + 3]; + } + } + + return new_pixels; +} + } // namespace gtk_util |