static void
color_transform (CogFrame * frame, void *_dest, int component, int j)
{
uint8_t *dest = _dest;
uint8_t *src_y;
uint8_t *src_u;
uint8_t *src_v;
uint8_t *table;
int i;
table = COG_OFFSET (frame->virt_priv2, component * 0x1000000);
src_y = cog_virt_frame_get_line (frame->virt_frame1, 0, j);
src_u = cog_virt_frame_get_line (frame->virt_frame1, 1, j);
src_v = cog_virt_frame_get_line (frame->virt_frame1, 2, j);
for (i = 0; i < frame->width; i++) {
dest[i] = table[(src_y[i] << 16) | (src_u[i] << 8) | (src_v[i])];
}
}
static guint8 *
get_color_transform_table (void)
{
static guint8 *color_transform_table = NULL;
#if 1
if (!color_transform_table) {
ColorMatrix bt601_to_rgb;
ColorMatrix bt601_to_yuv;
ColorMatrix bt601_rgb_to_XYZ;
ColorMatrix dell_XYZ_to_rgb;
guint8 *table_y;
guint8 *table_u;
guint8 *table_v;
int y, u, v;
videomixer_color_matrix_build_yuv_to_rgb_601 (&bt601_to_rgb);
videomixer_color_matrix_build_rgb_to_yuv_601 (&bt601_to_yuv);
videomixer_color_matrix_build_rgb_to_XYZ_601 (&bt601_rgb_to_XYZ);
videomixer_color_matrix_build_XYZ_to_rgb_dell (&dell_XYZ_to_rgb);
color_transform_table = g_malloc (0x1000000 * 3);
table_y = COG_OFFSET (color_transform_table, 0 * 0x1000000);
table_u = COG_OFFSET (color_transform_table, 1 * 0x1000000);
table_v = COG_OFFSET (color_transform_table, 2 * 0x1000000);
for (y = 0; y < 256; y++) {
for (u = 0; u < 256; u++) {
for (v = 0; v < 256; v++) {
Color c;
c.v[0] = y;
c.v[1] = u;
c.v[2] = v;
videomixer_color_matrix_apply (&bt601_to_rgb, &c, &c);
color_gamut_clamp (&c, &c);
color_transfer_function_apply (&c, &c);
videomixer_color_matrix_apply (&bt601_rgb_to_XYZ, &c, &c);
videomixer_color_matrix_apply (&dell_XYZ_to_rgb, &c, &c);
color_transfer_function_unapply (&c, &c);
color_gamut_clamp (&c, &c);
videomixer_color_matrix_apply (&bt601_to_yuv, &c, &c);
table_y[(y << 16) | (u << 8) | (v)] = rint (c.v[0]);
table_u[(y << 16) | (u << 8) | (v)] = rint (c.v[1]);
table_v[(y << 16) | (u << 8) | (v)] = rint (c.v[2]);
}
}
}
}
#endif
#if 0
if (!color_transform_table) {
ColorMatrix bt709_to_bt601;
guint8 *table_y;
guint8 *table_u;
guint8 *table_v;
int y, u, v;
videomixer_color_matrix_build_bt709_to_bt601 (&bt709_to_bt601);
color_transform_table = g_malloc (0x1000000 * 3);
table_y = COG_OFFSET (color_transform_table, 0 * 0x1000000);
table_u = COG_OFFSET (color_transform_table, 1 * 0x1000000);
table_v = COG_OFFSET (color_transform_table, 2 * 0x1000000);
for (y = 0; y < 256; y++) {
for (u = 0; u < 256; u++) {
for (v = 0; v < 256; v++) {
Color c;
c.v[0] = y;
c.v[1] = u;
c.v[2] = v;
videomixer_color_matrix_apply (&bt709_to_bt601, &c, &c);
table_y[(y << 16) | (u << 8) | (v)] = rint (c.v[0]);
table_u[(y << 16) | (u << 8) | (v)] = rint (c.v[1]);
table_v[(y << 16) | (u << 8) | (v)] = rint (c.v[2]);
}
}
}
}
#endif
return color_transform_table;
}