void evas_common_convert_rgba_to_8bpp_rgb_232_dith (DATA32 *src, DATA8 *dst, int src_jump, int dst_jump, int w, int h, int dith_x, int dith_y, DATA8 *pal)
{
DATA32 *src_ptr;
DATA8 *dst_ptr;
int x, y;
DATA8 r, g, b;
DATA8 dith, dith2;
dst_ptr = (DATA8 *)dst;
CONVERT_LOOP_START_ROT_0();
dith = DM_SHR(DM_TABLE[(x + dith_x) & DM_MSK][(y + dith_y) & DM_MSK], 3);
dith2 = DM_SHR(DM_TABLE[(x + dith_x) & DM_MSK][(y + dith_y) & DM_MSK], 2);
/* r = (R_VAL(src_ptr)) >> (8 - 2);*/
/* g = (G_VAL(src_ptr)) >> (8 - 3);*/
/* b = (B_VAL(src_ptr)) >> (8 - 2);*/
/* if (((R_VAL(src_ptr) - (r << (8 - 2))) >= dith2) && (r < 0x03)) r++;*/
/* if (((G_VAL(src_ptr) - (g << (8 - 3))) >= dith ) && (g < 0x07)) g++;*/
/* if (((B_VAL(src_ptr) - (b << (8 - 2))) >= dith2) && (b < 0x03)) b++;*/
r = (R_VAL(src_ptr)) * 3 / 255;
if (((R_VAL(src_ptr) - (r * 255 / 3)) >= dith2) && (r < 0x03)) r++;
g = (G_VAL(src_ptr)) * 7 / 255;
if (((G_VAL(src_ptr) - (g * 255 / 7)) >= dith ) && (g < 0x07)) g++;
b = (B_VAL(src_ptr)) * 3 / 255;
if (((B_VAL(src_ptr) - (b * 255 / 3)) >= dith2) && (b < 0x03)) b++;
*dst_ptr = pal[(r << 5) | (g << 2) | (b)];
CONVERT_LOOP_END_ROT_0();
}
void evas_common_convert_rgba_to_8bpp_rgb_666_dith (DATA32 *src, DATA8 *dst, int src_jump, int dst_jump, int w, int h, int dith_x, int dith_y, DATA8 *pal)
{
DATA32 *src_ptr;
DATA8 *dst_ptr;
int x, y;
DATA8 r, g, b;
DATA8 dith;
static int tables_calcualted = 0;
if (!tables_calcualted)
{
int i;
tables_calcualted = 1;
for (i = 0; i < 256; i++)
p_to_6[i] = (i * 5) / 255;
for (i = 0; i < 256; i++)
p_to_6_err[i] = ((i * 5) - (p_to_6[i] * 255)) * DM_DIV / 255;
}
dst_ptr = (DATA8 *)dst;
CONVERT_LOOP_START_ROT_0();
r = p_to_6[(R_VAL(src_ptr))];
g = p_to_6[(G_VAL(src_ptr))];
b = p_to_6[(B_VAL(src_ptr))];
dith = DM_TABLE[(x + dith_x) & DM_MSK][(y + dith_y) & DM_MSK];
if ((p_to_6_err[(R_VAL(src_ptr))] >= dith ) && (r < 5)) r++;
if ((p_to_6_err[(G_VAL(src_ptr))] >= dith ) && (g < 5)) g++;
if ((p_to_6_err[(B_VAL(src_ptr))] >= dith ) && (b < 5)) b++;
*dst_ptr = pal[(r * 36) + (g * 6) + (b)];
CONVERT_LOOP_END_ROT_0();
}
void evas_common_convert_rgba_to_8bpp_pal_gray64(DATA32 *src, DATA8 *dst, int src_jump, int dst_jump, int w, int h, int dith_x EINA_UNUSED, int dith_y EINA_UNUSED, DATA8 *pal)
{
DATA32 *src_ptr;
DATA8 *dst_ptr;
int x, y;
DATA8 Y;
dst_ptr = dst;
CONVERT_LOOP_START_ROT_0();
/* RGB -> YUV conversion */
Y = ((R_VAL(src_ptr) * 76) +
(G_VAL(src_ptr) * 151) +
(B_VAL(src_ptr) * 29)) >> 10;
*dst_ptr = pal[Y];
CONVERT_LOOP_END_ROT_0();
}
