102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
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#include "pixels.h"
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#include <stdio.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include <libdrm/drm_fourcc.h>
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#define swap32(x) (((x >> 24) & 0xff) | ((x << 8) & 0xff0000) | \
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((x >> 8) & 0xff00) | ((x << 24) & 0xff000000))
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define u32_le(x) x
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#else
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#define u32_le(x) swap32(x)
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#endif
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#define XSTR(s) STR(s)
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#define STR(s) #s
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#define UDIV_UP(a, b) (((a) + (b) - 1) / (b))
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#define ARRAY_LEN(a) (sizeof(a) / (sizeof(a[0])))
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static bool test_fourcc_to_pixman_fmt(void)
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{
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pixman_format_code_t r;
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#define check(a, b) \
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r = 0; \
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if (!fourcc_to_pixman_fmt(&r, b) || a != r) { \
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fprintf(stderr, "Failed check for %s\n", XSTR(a)); \
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return false; \
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} while(0)
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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check(PIXMAN_a2r10g10b10, DRM_FORMAT_ARGB2101010);
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check(PIXMAN_r8g8b8a8, DRM_FORMAT_RGBA8888);
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check(PIXMAN_b8g8r8a8, DRM_FORMAT_BGRA8888);
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check(PIXMAN_r5g6b5, DRM_FORMAT_RGB565);
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#else
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check(PIXMAN_r8g8b8a8, DRM_FORMAT_ABGR8888);
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check(PIXMAN_b8g8r8a8, DRM_FORMAT_ARGB8888);
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check(PIXMAN_r5g6b5, DRM_FORMAT_BGR565);
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#endif
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#undef check
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return true;
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}
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static bool test_extract_alpha_mask_rgba8888(void)
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{
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uint32_t test_data[] = {
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u32_le(0x00000000), // Black, transparent
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u32_le(0xff000000), // Red, transparent
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u32_le(0x00ff0000), // Red, transparent
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u32_le(0x0000ff00), // Green, transparent
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u32_le(0x000000ff), // Black, opaque
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u32_le(0xff0000ff), // Red, opaque
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u32_le(0x00ff00ff), // Red, opaque
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u32_le(0x0000ffff), // Green, opaque
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};
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uint8_t mask[UDIV_UP(ARRAY_LEN(test_data), 8)] = { 0 };
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bool ok = extract_alpha_mask(mask, test_data, DRM_FORMAT_RGBA8888,
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ARRAY_LEN(test_data));
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if (!ok) {
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fprintf(stderr, "Failed to extract alpha mask");
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return false;
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}
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if (mask[0] != 0x0f) {
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fprintf(stderr, "Expected alpha mask to be 0b00001111 (0x0f), but it was %x",
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mask[0]);
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return false;
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}
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memset(mask, 0, sizeof(mask));
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ok = extract_alpha_mask(mask, test_data, DRM_FORMAT_BGRA8888,
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ARRAY_LEN(test_data));
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if (!ok) {
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fprintf(stderr, "Failed to extract alpha mask");
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return false;
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}
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if (mask[0] != 0x0f) {
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fprintf(stderr, "Expected alpha mask to be 0b00001111 (0x0f), but it was %x",
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mask[0]);
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return false;
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}
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return true;
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}
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int main()
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{
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bool ok = test_fourcc_to_pixman_fmt() &&
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test_extract_alpha_mask_rgba8888();
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return ok ? 0 : 1;
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}
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