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#include <assert.h>
#include <drm_fourcc.h>
#include <wlr/util/log.h>
#include "render/pixel_format.h"
static const struct wlr_pixel_format_info pixel_format_info[] = {
{
.drm_format = DRM_FORMAT_XRGB8888,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ARGB8888,
.opaque_substitute = DRM_FORMAT_XRGB8888,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR8888,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ABGR8888,
.opaque_substitute = DRM_FORMAT_XBGR8888,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_RGBX8888,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_RGBA8888,
.opaque_substitute = DRM_FORMAT_RGBX8888,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_BGRX8888,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_BGRA8888,
.opaque_substitute = DRM_FORMAT_BGRX8888,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_R8,
.bytes_per_block = 1,
},
{
.drm_format = DRM_FORMAT_GR88,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_RGB888,
.bytes_per_block = 3,
},
{
.drm_format = DRM_FORMAT_BGR888,
.bytes_per_block = 3,
},
{
.drm_format = DRM_FORMAT_RGBX4444,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_RGBA4444,
.opaque_substitute = DRM_FORMAT_RGBX4444,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_BGRX4444,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_BGRA4444,
.opaque_substitute = DRM_FORMAT_BGRX4444,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_RGBX5551,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_RGBA5551,
.opaque_substitute = DRM_FORMAT_RGBX5551,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_BGRX5551,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_BGRA5551,
.opaque_substitute = DRM_FORMAT_BGRX5551,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XRGB1555,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_ARGB1555,
.opaque_substitute = DRM_FORMAT_XRGB1555,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_RGB565,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_BGR565,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_XRGB2101010,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ARGB2101010,
.opaque_substitute = DRM_FORMAT_XRGB2101010,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR2101010,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ABGR2101010,
.opaque_substitute = DRM_FORMAT_XBGR2101010,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR16161616F,
.bytes_per_block = 8,
},
{
.drm_format = DRM_FORMAT_ABGR16161616F,
.opaque_substitute = DRM_FORMAT_XBGR16161616F,
.bytes_per_block = 8,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR16161616,
.bytes_per_block = 8,
},
{
.drm_format = DRM_FORMAT_ABGR16161616,
.opaque_substitute = DRM_FORMAT_XBGR16161616,
.bytes_per_block = 8,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_YVYU,
.bytes_per_block = 4,
.block_width = 2,
.block_height = 1,
},
{
.drm_format = DRM_FORMAT_VYUY,
.bytes_per_block = 4,
.block_width = 2,
.block_height = 1,
},
};
static const size_t pixel_format_info_size =
sizeof(pixel_format_info) / sizeof(pixel_format_info[0]);
const struct wlr_pixel_format_info *drm_get_pixel_format_info(uint32_t fmt) {
for (size_t i = 0; i < pixel_format_info_size; ++i) {
if (pixel_format_info[i].drm_format == fmt) {
return &pixel_format_info[i];
}
}
return NULL;
}
uint32_t convert_wl_shm_format_to_drm(enum wl_shm_format fmt) {
switch (fmt) {
case WL_SHM_FORMAT_XRGB8888:
return DRM_FORMAT_XRGB8888;
case WL_SHM_FORMAT_ARGB8888:
return DRM_FORMAT_ARGB8888;
default:
return (uint32_t)fmt;
}
}
enum wl_shm_format convert_drm_format_to_wl_shm(uint32_t fmt) {
switch (fmt) {
case DRM_FORMAT_XRGB8888:
return WL_SHM_FORMAT_XRGB8888;
case DRM_FORMAT_ARGB8888:
return WL_SHM_FORMAT_ARGB8888;
default:
return (enum wl_shm_format)fmt;
}
}
uint32_t pixel_format_info_pixels_per_block(const struct wlr_pixel_format_info *info) {
uint32_t pixels = info->block_width * info->block_height;
return pixels > 0 ? pixels : 1;
}
static int32_t div_round_up(int32_t dividend, int32_t divisor) {
int32_t quotient = dividend / divisor;
if (dividend % divisor != 0) {
quotient++;
}
return quotient;
}
int32_t pixel_format_info_min_stride(const struct wlr_pixel_format_info *fmt, int32_t width) {
int32_t pixels_per_block = (int32_t)pixel_format_info_pixels_per_block(fmt);
int32_t bytes_per_block = (int32_t)fmt->bytes_per_block;
if (width > INT32_MAX / bytes_per_block) {
wlr_log(WLR_DEBUG, "Invalid width %d (overflow)", width);
return 0;
}
return div_round_up(width * bytes_per_block, pixels_per_block);
}
bool pixel_format_info_check_stride(const struct wlr_pixel_format_info *fmt,
int32_t stride, int32_t width) {
int32_t bytes_per_block = (int32_t)fmt->bytes_per_block;
if (stride % bytes_per_block != 0) {
wlr_log(WLR_DEBUG, "Invalid stride %d (incompatible with %d "
"bytes-per-block)", stride, bytes_per_block);
return false;
}
int32_t min_stride = pixel_format_info_min_stride(fmt, width);
if (min_stride <= 0) {
return false;
} else if (stride < min_stride) {
wlr_log(WLR_DEBUG, "Invalid stride %d (too small for %d "
"bytes-per-block and width %d)", stride, bytes_per_block, width);
return false;
}
return true;
}
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