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rg16 is actually rgb565

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This commit is contained in:
JerryXiao 2024-03-01 21:04:08 +08:00
parent 516ecb4121
commit f12f7f6883
Signed by: Jerry
GPG key ID: 22618F758B5BE2E5
1 changed files with 53 additions and 3 deletions
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54
drm.c
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@ -32,8 +32,57 @@
extern struct kmsvnc_data *kmsvnc;
static int _rg16_clamp_flip(int x, int to) {
if (x < 0) return -x;
else if (x >= to) return to + to - x - 2;
else return x;
}
static void convert_bggr16le_to_rgba(const char *in, int width, int height, char *buff) {
if (unlikely(in == buff)) return;
#define RG16_BPP 2
#define RG16_GET_NBR_PIX(_x,_y) ( __builtin_bswap16(htons(*(uint16_t*)(in + RG16_BPP*(_rg16_clamp_flip((_x),width) + _rg16_clamp_flip((_y),height) * width)))) )
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
int i = x + y * width;
uint16_t v = __builtin_bswap16(htons(*(uint16_t*)(in + i * RG16_BPP)));
if ((x % 2) ^ (y % 2)) {
// g1,g2
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 1) = 0xff & (v >> 8);
uint32_t rb2 = RG16_GET_NBR_PIX(x-1, y) + RG16_GET_NBR_PIX(x+1, y);
uint32_t br2 = RG16_GET_NBR_PIX(x, y-1) + RG16_GET_NBR_PIX(x, y+1);
if (x % 2) {
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 0) = 0xff & (rb2 >> 9);
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 2) = 0xff & (br2 >> 9);
}
else {
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 2) = 0xff & (rb2 >> 9);
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 0) = 0xff & (br2 >> 9);
}
}
else {
// r,b
uint32_t g4 = RG16_GET_NBR_PIX(x-1, y) + RG16_GET_NBR_PIX(x+1, y) + RG16_GET_NBR_PIX(x, y-1) + RG16_GET_NBR_PIX(x, y+1);
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 1) = 0xff & (g4 >> 10);
uint32_t br4 = RG16_GET_NBR_PIX(x-1, y-1) + RG16_GET_NBR_PIX(x-1, y+1) + RG16_GET_NBR_PIX(x+1, y-1) + RG16_GET_NBR_PIX(x+1, y+1);
if (x % 2) {
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 0) = 0xff & (v >> 8);
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 2) = 0xff & (br4 >> 10);
}
else {
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 2) = 0xff & (v >> 8);
*(uint8_t*)(buff + i * BYTES_PER_PIXEL + 0) = 0xff & (br4 >> 10);
}
}
}
}
}
static int check_pixfmt_non_vaapi() {
if (
if (kmsvnc->drm->mfb->pixel_format == KMSVNC_FOURCC_TO_INT('R', 'G', '1', '6'))
{
kmsvnc->drm->funcs->convert = convert_bggr16le_to_rgba;
}
else if (
kmsvnc->drm->mfb->pixel_format != KMSVNC_FOURCC_TO_INT('X', 'R', '2', '4') &&
kmsvnc->drm->mfb->pixel_format != KMSVNC_FOURCC_TO_INT('A', 'R', '2', '4')
)
@ -706,7 +755,8 @@ int drm_vendors() {
}
else if (strcmp(driver_name, "vmwgfx") == 0 ||
strcmp(driver_name, "vboxvideo") == 0 ||
strcmp(driver_name, "virtio_gpu") == 0
strcmp(driver_name, "virtio_gpu") == 0 ||
strcmp(driver_name, "vc4") == 0
)
{
if (check_pixfmt_non_vaapi()) return 1;