📄 colorspace.c
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u_ptr[(UV_ROW)*uv_stride] = (x_ptr[(ROW1)*x_stride+(C2)] + x_ptr[(ROW2)*x_stride+(C2)] + 1) / 2; \
v_ptr[(UV_ROW)*uv_stride] = (x_ptr[(ROW1)*x_stride+(C4)] + x_ptr[(ROW2)*x_stride+(C4)] + 1) / 2;
#define YUYV_TO_YV12_ROW(SIZE,C1,C2,C3,C4) \
/* nothing */
#define YUYV_TO_YV12(SIZE,C1,C2,C3,C4) \
READ_YUYV_Y (0, C1,C2,C3,C4) \
READ_YUYV_Y (1, C1,C2,C3,C4) \
READ_YUYV_UV(0, 0,1, C1,C2,C3,C4)
#define YUYVI_TO_YV12_ROW(SIZE,C1,C2,C3,C4) \
/* nothing */
#define YUYVI_TO_YV12(SIZE,C1,C2,C3,C4) \
READ_YUYV_Y (0, C1,C2,C3,C4) \
READ_YUYV_Y (1, C1,C2,C3,C4) \
READ_YUYV_Y (2, C1,C2,C3,C4) \
READ_YUYV_Y (3, C1,C2,C3,C4) \
READ_YUYV_UV(0, 0,2, C1,C2,C3,C4) \
READ_YUYV_UV(1, 1,3, C1,C2,C3,C4)
MAKE_COLORSPACE(rgb555_to_yv12_c, 2,2,2, RGB16_TO_YV12, MK_RGB555, 0,0,0)
MAKE_COLORSPACE(rgb565_to_yv12_c, 2,2,2, RGB16_TO_YV12, MK_RGB565, 0,0,0)
MAKE_COLORSPACE(bgr_to_yv12_c, 3,2,2, RGB_TO_YV12, 2,1,0, 0)
MAKE_COLORSPACE(bgra_to_yv12_c, 4,2,2, RGB_TO_YV12, 2,1,0, 0)
MAKE_COLORSPACE(rgb_to_yv12_c, 3,2,2, RGB_TO_YV12, 0,1,2, 0)
MAKE_COLORSPACE(abgr_to_yv12_c, 4,2,2, RGB_TO_YV12, 3,2,1, 0)
MAKE_COLORSPACE(rgba_to_yv12_c, 4,2,2, RGB_TO_YV12, 0,1,2, 0)
MAKE_COLORSPACE(argb_to_yv12_c, 4,2,2, RGB_TO_YV12, 1,2,3, 0)
MAKE_COLORSPACE(yuyv_to_yv12_c, 2,2,2, YUYV_TO_YV12, 0,1,2,3)
MAKE_COLORSPACE(uyvy_to_yv12_c, 2,2,2, YUYV_TO_YV12, 1,0,3,2)
MAKE_COLORSPACE(rgb555i_to_yv12_c, 2,2,4, RGB16I_TO_YV12, MK_RGB555, 0,0,0)
MAKE_COLORSPACE(rgb565i_to_yv12_c, 2,2,4, RGB16I_TO_YV12, MK_RGB565, 0,0,0)
MAKE_COLORSPACE(bgri_to_yv12_c, 3,2,4, RGBI_TO_YV12, 2,1,0, 0)
MAKE_COLORSPACE(bgrai_to_yv12_c, 4,2,4, RGBI_TO_YV12, 2,1,0, 0)
MAKE_COLORSPACE(abgri_to_yv12_c, 4,2,4, RGBI_TO_YV12, 3,2,1, 0)
MAKE_COLORSPACE(rgbi_to_yv12_c, 3,2,4, RGBI_TO_YV12, 0,1,2, 0)
MAKE_COLORSPACE(rgbai_to_yv12_c, 4,2,4, RGBI_TO_YV12, 0,1,2, 0)
MAKE_COLORSPACE(argbi_to_yv12_c, 4,2,4, RGBI_TO_YV12, 1,2,3, 0)
MAKE_COLORSPACE(yuyvi_to_yv12_c, 2,2,4, YUYVI_TO_YV12, 0,1,2,3)
MAKE_COLORSPACE(uyvyi_to_yv12_c, 2,2,4, YUYVI_TO_YV12, 1,0,3,2)
/********** colorspace output (yv12_to_xxx) functions **********/
/* yuv -> rgb def's */
#define RGB_Y_OUT 1.164
#define B_U_OUT 2.018
#define Y_ADD_OUT 16
#define G_U_OUT 0.391
#define G_V_OUT 0.813
#define U_ADD_OUT 128
#define R_V_OUT 1.596
#define V_ADD_OUT 128
#define SCALEBITS_OUT 13
#define FIX_OUT(x) ((uint16_t) ((x) * (1L<<SCALEBITS_OUT) + 0.5))
/* rgb16/rgb16i output */
#define MK_RGB555(R,G,B) \
((MAX(0,MIN(255, R)) << 7) & 0x7c00) | \
((MAX(0,MIN(255, G)) << 2) & 0x03e0) | \
((MAX(0,MIN(255, B)) >> 3) & 0x001f)
#define MK_RGB565(R,G,B) \
((MAX(0,MIN(255, R)) << 8) & 0xf800) | \
((MAX(0,MIN(255, G)) << 3) & 0x07e0) | \
((MAX(0,MIN(255, B)) >> 3) & 0x001f)
#define WRITE_RGB16(ROW,UV_ROW,C1) \
rgb_y = RGB_Y_tab[ y_ptr[y_stride*(ROW) + 0] ]; \
b[ROW] = (b[ROW] & 0x7) + ((rgb_y + b_u##UV_ROW) >> SCALEBITS_OUT); \
g[ROW] = (g[ROW] & 0x7) + ((rgb_y - g_uv##UV_ROW) >> SCALEBITS_OUT); \
r[ROW] = (r[ROW] & 0x7) + ((rgb_y + r_v##UV_ROW) >> SCALEBITS_OUT); \
*(uint16_t *) (x_ptr+((ROW)*x_stride)+0) = C1(r[ROW], g[ROW], b[ROW]); \
rgb_y = RGB_Y_tab[ y_ptr[y_stride*(ROW) + 1] ]; \
b[ROW] = (b[ROW] & 0x7) + ((rgb_y + b_u##UV_ROW) >> SCALEBITS_OUT); \
g[ROW] = (g[ROW] & 0x7) + ((rgb_y - g_uv##UV_ROW) >> SCALEBITS_OUT); \
r[ROW] = (r[ROW] & 0x7) + ((rgb_y + r_v##UV_ROW) >> SCALEBITS_OUT); \
*(uint16_t *) (x_ptr+((ROW)*x_stride)+2) = C1(r[ROW], g[ROW], b[ROW]);
#define YV12_TO_RGB16_ROW(SIZE,C1,C2,C3,C4) \
int r[2], g[2], b[2]; \
r[0] = r[1] = g[0] = g[1] = b[0] = b[1] = 0;
#define YV12_TO_RGB16(SIZE,C1,C2,C3,C4) \
int rgb_y; \
int b_u0 = B_U_tab[ u_ptr[0] ]; \
int g_uv0 = G_U_tab[ u_ptr[0] ] + G_V_tab[ v_ptr[0] ]; \
int r_v0 = R_V_tab[ v_ptr[0] ]; \
WRITE_RGB16(0, 0, C1) \
WRITE_RGB16(1, 0, C1)
#define YV12_TO_RGB16I_ROW(SIZE,C1,C2,C3,C4) \
int r[4], g[4], b[4]; \
r[0] = r[1] = r[2] = r[3] = 0; \
g[0] = g[1] = g[2] = g[3] = 0; \
b[0] = b[1] = b[2] = b[3] = 0;
#define YV12_TO_RGB16I(SIZE,C1,C2,C3,C4) \
int rgb_y; \
int b_u0 = B_U_tab[ u_ptr[0] ]; \
int g_uv0 = G_U_tab[ u_ptr[0] ] + G_V_tab[ v_ptr[0] ]; \
int r_v0 = R_V_tab[ v_ptr[0] ]; \
int b_u1 = B_U_tab[ u_ptr[uv_stride] ]; \
int g_uv1 = G_U_tab[ u_ptr[uv_stride] ] + G_V_tab[ v_ptr[uv_stride] ]; \
int r_v1 = R_V_tab[ v_ptr[uv_stride] ]; \
WRITE_RGB16(0, 0, C1) \
WRITE_RGB16(1, 1, C1) \
WRITE_RGB16(2, 0, C1) \
WRITE_RGB16(3, 1, C1) \
/* rgb/rgbi output */
#define WRITE_RGB(SIZE,ROW,UV_ROW,C1,C2,C3,C4) \
rgb_y = RGB_Y_tab[ y_ptr[(ROW)*y_stride + 0] ]; \
x_ptr[(ROW)*x_stride+(C3)] = MAX(0, MIN(255, (rgb_y + b_u##UV_ROW) >> SCALEBITS_OUT)); \
x_ptr[(ROW)*x_stride+(C2)] = MAX(0, MIN(255, (rgb_y - g_uv##UV_ROW) >> SCALEBITS_OUT)); \
x_ptr[(ROW)*x_stride+(C1)] = MAX(0, MIN(255, (rgb_y + r_v##UV_ROW) >> SCALEBITS_OUT)); \
if ((SIZE)>3) x_ptr[(ROW)*x_stride+(C4)] = 0; \
rgb_y = RGB_Y_tab[ y_ptr[(ROW)*y_stride + 1] ]; \
x_ptr[(ROW)*x_stride+(SIZE)+(C3)] = MAX(0, MIN(255, (rgb_y + b_u##UV_ROW) >> SCALEBITS_OUT)); \
x_ptr[(ROW)*x_stride+(SIZE)+(C2)] = MAX(0, MIN(255, (rgb_y - g_uv##UV_ROW) >> SCALEBITS_OUT)); \
x_ptr[(ROW)*x_stride+(SIZE)+(C1)] = MAX(0, MIN(255, (rgb_y + r_v##UV_ROW) >> SCALEBITS_OUT)); \
if ((SIZE)>3) x_ptr[(ROW)*x_stride+(SIZE)+(C4)] = 0;
#define YV12_TO_RGB_ROW(SIZE,C1,C2,C3,C4) /* nothing */
#define YV12_TO_RGB(SIZE,C1,C2,C3,C4) \
int rgb_y; \
int b_u0 = B_U_tab[ u_ptr[0] ]; \
int g_uv0 = G_U_tab[ u_ptr[0] ] + G_V_tab[ v_ptr[0] ]; \
int r_v0 = R_V_tab[ v_ptr[0] ]; \
WRITE_RGB(SIZE, 0, 0, C1,C2,C3,C4) \
WRITE_RGB(SIZE, 1, 0, C1,C2,C3,C4)
#define YV12_TO_RGBI_ROW(SIZE,C1,C2,C3,C4) /* nothing */
#define YV12_TO_RGBI(SIZE,C1,C2,C3,C4) \
int rgb_y; \
int b_u0 = B_U_tab[ u_ptr[0] ]; \
int g_uv0 = G_U_tab[ u_ptr[0] ] + G_V_tab[ v_ptr[0] ]; \
int r_v0 = R_V_tab[ v_ptr[0] ]; \
int b_u1 = B_U_tab[ u_ptr[uv_stride] ]; \
int g_uv1 = G_U_tab[ u_ptr[uv_stride] ] + G_V_tab[ v_ptr[uv_stride] ]; \
int r_v1 = R_V_tab[ v_ptr[uv_stride] ]; \
WRITE_RGB(SIZE, 0, 0, C1,C2,C3,C4) \
WRITE_RGB(SIZE, 1, 1, C1,C2,C3,C4) \
WRITE_RGB(SIZE, 2, 0, C1,C2,C3,C4) \
WRITE_RGB(SIZE, 3, 1, C1,C2,C3,C4)
/* yuyv/yuyvi output */
#define WRITE_YUYV(ROW,UV_ROW,C1,C2,C3,C4) \
x_ptr[(ROW)*x_stride+(C1)] = y_ptr[ (ROW)*y_stride +0]; \
x_ptr[(ROW)*x_stride+(C2)] = u_ptr[(UV_ROW)*uv_stride+0]; \
x_ptr[(ROW)*x_stride+(C3)] = y_ptr[ (ROW)*y_stride +1]; \
x_ptr[(ROW)*x_stride+(C4)] = v_ptr[(UV_ROW)*uv_stride+0]; \
#define YV12_TO_YUYV_ROW(SIZE,C1,C2,C3,C4) /* nothing */
#define YV12_TO_YUYV(SIZE,C1,C2,C3,C4) \
WRITE_YUYV(0, 0, C1,C2,C3,C4) \
WRITE_YUYV(1, 0, C1,C2,C3,C4)
#define YV12_TO_YUYVI_ROW(SIZE,C1,C2,C3,C4) /* nothing */
#define YV12_TO_YUYVI(SIZE,C1,C2,C3,C4) \
WRITE_YUYV(0, 0, C1,C2,C3,C4) \
WRITE_YUYV(1, 1, C1,C2,C3,C4) \
WRITE_YUYV(2, 0, C1,C2,C3,C4) \
WRITE_YUYV(3, 1, C1,C2,C3,C4)
MAKE_COLORSPACE(yv12_to_rgb555_c, 2,2,2, YV12_TO_RGB16, MK_RGB555, 0,0,0)
MAKE_COLORSPACE(yv12_to_rgb565_c, 2,2,2, YV12_TO_RGB16, MK_RGB565, 0,0,0)
MAKE_COLORSPACE(yv12_to_bgr_c, 3,2,2, YV12_TO_RGB, 2,1,0,0)
MAKE_COLORSPACE(yv12_to_bgra_c, 4,2,2, YV12_TO_RGB, 2,1,0,3)
MAKE_COLORSPACE(yv12_to_abgr_c, 4,2,2, YV12_TO_RGB, 3,2,1,0)
MAKE_COLORSPACE(yv12_to_rgb_c, 3,2,2, YV12_TO_RGB, 0,1,2,0)
MAKE_COLORSPACE(yv12_to_rgba_c, 4,2,2, YV12_TO_RGB, 0,1,2,3)
MAKE_COLORSPACE(yv12_to_argb_c, 4,2,2, YV12_TO_RGB, 1,2,3,0)
MAKE_COLORSPACE(yv12_to_yuyv_c, 2,2,2, YV12_TO_YUYV, 0,1,2,3)
MAKE_COLORSPACE(yv12_to_uyvy_c, 2,2,2, YV12_TO_YUYV, 1,0,3,2)
MAKE_COLORSPACE(yv12_to_rgb555i_c, 2,2,4, YV12_TO_RGB16I, MK_RGB555, 0,0,0)
MAKE_COLORSPACE(yv12_to_rgb565i_c, 2,2,4, YV12_TO_RGB16I, MK_RGB565, 0,0,0)
MAKE_COLORSPACE(yv12_to_bgri_c, 3,2,4, YV12_TO_RGBI, 2,1,0, 0)
MAKE_COLORSPACE(yv12_to_bgrai_c, 4,2,4, YV12_TO_RGBI, 2,1,0,3)
MAKE_COLORSPACE(yv12_to_abgri_c, 4,2,4, YV12_TO_RGBI, 3,2,1,0)
MAKE_COLORSPACE(yv12_to_rgbi_c, 3,2,4, YV12_TO_RGBI, 0,1,2,0)
MAKE_COLORSPACE(yv12_to_rgbai_c, 4,2,4, YV12_TO_RGBI, 0,1,2,3)
MAKE_COLORSPACE(yv12_to_argbi_c, 4,2,4, YV12_TO_RGBI, 1,2,3,0)
MAKE_COLORSPACE(yv12_to_yuyvi_c, 2,2,4, YV12_TO_YUYVI, 0,1,2,3)
MAKE_COLORSPACE(yv12_to_uyvyi_c, 2,2,4, YV12_TO_YUYVI, 1,0,3,2)
/* yv12 to yv12 copy function */
void
yv12_to_yv12_c(uint8_t * y_dst, uint8_t * u_dst, uint8_t * v_dst,
int y_dst_stride, int uv_dst_stride,
uint8_t * y_src, uint8_t * u_src, uint8_t * v_src,
int y_src_stride, int uv_src_stride,
int width, int height, int vflip)
{
int width2 = width / 2;
int height2 = height / 2;
int y;
const int with_uv = (u_src!=0 && v_src!=0);
if (vflip) {
y_src += (height - 1) * y_src_stride;
if (with_uv) {
u_src += (height2 - 1) * uv_src_stride;
v_src += (height2 - 1) * uv_src_stride;
}
y_src_stride = -y_src_stride;
uv_src_stride = -uv_src_stride;
}
for (y = height; y; y--) {
memcpy(y_dst, y_src, width);
y_src += y_src_stride;
y_dst += y_dst_stride;
}
if (with_uv) {
for (y = height2; y; y--) {
memcpy(u_dst, u_src, width2);
memcpy(v_dst, v_src, width2);
u_src += uv_src_stride;
u_dst += uv_dst_stride;
v_src += uv_src_stride;
v_dst += uv_dst_stride;
}
}
else {
for (y = height2; y; y--) {
memset(u_dst, 0x80, width2);
memset(v_dst, 0x80, width2);
u_dst += uv_dst_stride;
v_dst += uv_dst_stride;
}
}
}
/* initialize rgb lookup tables */
void
colorspace_init(void)
{
int32_t i;
for (i = 0; i < 256; i++) {
RGB_Y_tab[i] = FIX_OUT(RGB_Y_OUT) * (i - Y_ADD_OUT);
B_U_tab[i] = FIX_OUT(B_U_OUT) * (i - U_ADD_OUT);
G_U_tab[i] = FIX_OUT(G_U_OUT) * (i - U_ADD_OUT);
G_V_tab[i] = FIX_OUT(G_V_OUT) * (i - V_ADD_OUT);
R_V_tab[i] = FIX_OUT(R_V_OUT) * (i - V_ADD_OUT);
}
}
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