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render/pixel-format: add support for block-based formats

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Some formats like sub-sampled YCbCr use a block of bytes to
store the color values for more than one pixel. Update our format
table to be able to handle such formats.
This commit is contained in:
Simon Ser 2023-05-08 22:17:26 +02:00
parent 78a1ac540e
commit 96f3f3c92e
9 changed files with 117 additions and 56 deletions
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103
render/pixel_format.c
View file

@ -6,156 +6,156 @@
static const struct wlr_pixel_format_info pixel_format_info[] = {
{
.drm_format = DRM_FORMAT_XRGB8888,
.bpp = 32,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ARGB8888,
.opaque_substitute = DRM_FORMAT_XRGB8888,
.bpp = 32,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR8888,
.bpp = 32,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ABGR8888,
.opaque_substitute = DRM_FORMAT_XBGR8888,
.bpp = 32,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_RGBX8888,
.bpp = 32,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_RGBA8888,
.opaque_substitute = DRM_FORMAT_RGBX8888,
.bpp = 32,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_BGRX8888,
.bpp = 32,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_BGRA8888,
.opaque_substitute = DRM_FORMAT_BGRX8888,
.bpp = 32,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_R8,
.bpp = 8,
.bytes_per_block = 1,
},
{
.drm_format = DRM_FORMAT_GR88,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_RGB888,
.bpp = 24,
.bytes_per_block = 3,
},
{
.drm_format = DRM_FORMAT_BGR888,
.bpp = 24,
.bytes_per_block = 3,
},
{
.drm_format = DRM_FORMAT_RGBX4444,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_RGBA4444,
.opaque_substitute = DRM_FORMAT_RGBX4444,
.bpp = 16,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_BGRX4444,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_BGRA4444,
.opaque_substitute = DRM_FORMAT_BGRX4444,
.bpp = 16,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_RGBX5551,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_RGBA5551,
.opaque_substitute = DRM_FORMAT_RGBX5551,
.bpp = 16,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_BGRX5551,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_BGRA5551,
.opaque_substitute = DRM_FORMAT_BGRX5551,
.bpp = 16,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XRGB1555,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_ARGB1555,
.opaque_substitute = DRM_FORMAT_XRGB1555,
.bpp = 16,
.bytes_per_block = 2,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_RGB565,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_BGR565,
.bpp = 16,
.bytes_per_block = 2,
},
{
.drm_format = DRM_FORMAT_XRGB2101010,
.bpp = 32,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ARGB2101010,
.opaque_substitute = DRM_FORMAT_XRGB2101010,
.bpp = 32,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR2101010,
.bpp = 32,
.bytes_per_block = 4,
},
{
.drm_format = DRM_FORMAT_ABGR2101010,
.opaque_substitute = DRM_FORMAT_XBGR2101010,
.bpp = 32,
.bytes_per_block = 4,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR16161616F,
.bpp = 64,
.bytes_per_block = 8,
},
{
.drm_format = DRM_FORMAT_ABGR16161616F,
.opaque_substitute = DRM_FORMAT_XBGR16161616F,
.bpp = 64,
.bytes_per_block = 8,
.has_alpha = true,
},
{
.drm_format = DRM_FORMAT_XBGR16161616,
.bpp = 64,
.bytes_per_block = 8,
},
{
.drm_format = DRM_FORMAT_ABGR16161616,
.opaque_substitute = DRM_FORMAT_XBGR16161616,
.bpp = 64,
.bytes_per_block = 8,
.has_alpha = true,
},
};
@ -195,19 +195,46 @@ enum wl_shm_format convert_drm_format_to_wl_shm(uint32_t 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) {
assert(fmt->bpp > 0 && fmt->bpp % 8 == 0);
int32_t bytes_per_pixel = (int32_t)(fmt->bpp / 8);
if (stride % bytes_per_pixel != 0) {
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-pixel)", stride, bytes_per_pixel);
"bytes-per-block)", stride, bytes_per_block);
return false;
}
if (stride / bytes_per_pixel < width) {
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-pixel and width %d)", stride, bytes_per_pixel, width);
"bytes-per-block and width %d)", stride, bytes_per_block, width);
return false;
}
return true;
}