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pixels: Add function to get rfb pixel format name

pull/63/head
Andri Yngvason 2022-02-12 13:15:30 +00:00
parent 0e0fe5b73a
commit c876b91541
3 changed files with 61 additions and 1 deletions
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1
include/pixels.h
View File

@ -40,3 +40,4 @@ bool extract_alpha_mask(uint8_t* dst, const void* src, uint32_t format,
size_t len); size_t len);
const char* drm_format_to_string(uint32_t fmt); const char* drm_format_to_string(uint32_t fmt);
const char* rfb_pixfmt_to_string(const struct rfb_pixel_format* fmt);

31
src/pixels.c
View File

@ -470,3 +470,34 @@ const char* drm_format_to_string(uint32_t fmt)
} }
return "UNKNOWN"; return "UNKNOWN";
} }
// Not exact, but close enough for debugging
const char* rfb_pixfmt_to_string(const struct rfb_pixel_format* fmt)
{
if (!(fmt->red_max == fmt->green_max && fmt->red_max == fmt->blue_max))
goto failure;
uint32_t profile = (fmt->red_shift << 16) | (fmt->green_shift << 8)
| (fmt->blue_shift);
switch (profile) {
#define CASE(r, g, b) case ((r << 16) | (g << 8) | b)
CASE(22, 10, 2): return "RGBX1010102";
CASE(2, 12, 22): return "BGRX1010102";
CASE(20, 10, 0): return "XRGB2101010";
CASE(0, 10, 20): return "XBGR2101010";
CASE(24, 16, 8): return "RGBX8888";
CASE(8, 16, 24): return "BGRX8888";
CASE(16, 8, 0): return "XRGB8888";
CASE(0, 8, 16): return "XBGR8888";
CASE(12, 8, 4): return "RGBX4444";
CASE(4, 8, 12): return "BGRX4444";
CASE(8, 4, 0): return "XRGB4444";
CASE(0, 4, 8): return "XBGR4444";
CASE(11, 5, 0): return "RGB565";
#undef CASE
}
failure:
return "UNKNOWN";
}

30
test/test-pixels.c
View File

@ -144,11 +144,39 @@ static bool test_drm_format_to_string(void)
return true; return true;
} }
static bool test_rfb_pixfmt_to_string(void)
{
struct rfb_pixel_format rgbx8888;
struct rfb_pixel_format bgrx8888;
struct rfb_pixel_format xrgb8888;
struct rfb_pixel_format xbgr8888;
rfb_pixfmt_from_fourcc(&rgbx8888, DRM_FORMAT_RGBX8888);
rfb_pixfmt_from_fourcc(&bgrx8888, DRM_FORMAT_BGRX8888);
rfb_pixfmt_from_fourcc(&xrgb8888, DRM_FORMAT_XRGB8888);
rfb_pixfmt_from_fourcc(&xbgr8888, DRM_FORMAT_XBGR8888);
if (strcmp(rfb_pixfmt_to_string(&rgbx8888), "RGBX8888") != 0)
return false;
if (strcmp(rfb_pixfmt_to_string(&bgrx8888), "BGRX8888") != 0)
return false;
if (strcmp(rfb_pixfmt_to_string(&xrgb8888), "XRGB8888") != 0)
return false;
if (strcmp(rfb_pixfmt_to_string(&xbgr8888), "XBGR8888") != 0)
return false;
return true;
}
int main() int main()
{ {
bool ok = test_pixel32_to_cpixel_4bpp() && bool ok = test_pixel32_to_cpixel_4bpp() &&
test_fourcc_to_pixman_fmt() && test_fourcc_to_pixman_fmt() &&
test_extract_alpha_mask_rgba8888() && test_extract_alpha_mask_rgba8888() &&
test_drm_format_to_string(); test_drm_format_to_string() &&
test_rfb_pixfmt_to_string();
return ok ? 0 : 1; return ok ? 0 : 1;
} }