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#ifndef RENDER_PIXEL_FORMAT_H
#define RENDER_PIXEL_FORMAT_H
#include <wayland-server-protocol.h>
/**
* Information about a pixel format.
*
* A pixel format is identified via its DRM four character code (see <drm_fourcc.h>).
*/
struct wlr_pixel_format_info {
uint32_t drm_format;
/* Equivalent of the format if it has an alpha channel,
* DRM_FORMAT_INVALID (0) if NA
*/
uint32_t opaque_substitute;
/* Bits per pixels */
uint32_t bpp;
/* True if the format has an alpha channel */
bool has_alpha;
};
/**
* Get pixel format information from a DRM FourCC.
*
* NULL is returned if the pixel format is unknown.
*/
const struct wlr_pixel_format_info *drm_get_pixel_format_info(uint32_t fmt);
/**
* Check whether a stride is large enough for a given pixel format and width.
*/
bool pixel_format_info_check_stride(const struct wlr_pixel_format_info *info,
int32_t stride, int32_t width);
/**
* Convert an enum wl_shm_format to a DRM FourCC.
*/
uint32_t convert_wl_shm_format_to_drm(enum wl_shm_format fmt);
/**
* Convert a DRM FourCC to an enum wl_shm_format.
*/
enum wl_shm_format convert_drm_format_to_wl_shm(uint32_t fmt);
#endif
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