static void
rgba_to_pala (Babl *conversion,
char *src_i,
char *dst,
long n,
void *dst_model_data)
{
const Babl *space = babl_conversion_get_destination_space (conversion);
BablPalette **palptr = dst_model_data;
BablPalette *pal;
int best_idx = 0;
assert (palptr);
pal = *palptr;
assert(pal);
while (n--)
{
double *src_d = (void*) src_i;
unsigned char src[4];
int c;
for (c = 0; c < 3; c++)
{
if (src_d[c] >= 1.0f)
src[c] = 255;
else if (src_d[c] <= 0.0f)
src[c] = 0;
else
src[c] = babl_trc_from_linear (space->space.trc[0],
src_d[c]) * 255 + 0.5f;
}
if (src_d[3] >= 1.0f)
src[3] = 255;
else if (src_d[3] <= 0.0f)
src[3] = 0;
else
src[3] = src_d[3] * 255 + 0.5f;
best_idx = babl_palette_lookup (pal, src, best_idx);
((double *) dst)[0] = best_idx / BABL_IDX_FACTOR;
((double *) dst)[1] = src_d[3];
src_i += sizeof (double) * 4;
dst += sizeof (double) * 2;
}
}
static void
rgba_float_to_pal_a (Babl *conversion,
unsigned char *src_b,
unsigned char *dst,
long n,
void *src_model_data)
{
const Babl *space = babl_conversion_get_destination_space (conversion);
BablPalette **palptr = src_model_data;
BablPalette *pal;
int best_idx = 0;
assert (palptr);
pal = *palptr;
assert(pal);
while (n--)
{
float *src_f = (void*) src_b;
unsigned char src[4];
int c;
for (c = 0; c < 3; c++)
{
if (src_f[c] >= 1.0f)
src[c] = 255;
else if (src_f[c] <= 0.0f)
src[c] = 0;
else
src[c] = babl_trc_from_linear (space->space.trc[0],
src_f[c]) * 255 + 0.5f;
}
if (src_f[3] >= 1.0f)
src[3] = 255;
else if (src_f[3] <= 0.0f)
src[3] = 0;
else
src[3] = src_f[3] * 255 + 0.5f;
dst[0] = best_idx = babl_palette_lookup (pal, src, best_idx);
dst[1] = src[3];
src_b += sizeof (float) * 4;
dst += sizeof (char) * 2;
}
}
static long
rgba_u8_to_pal_a (char *src,
char *dst,
long n,
void *src_model_data)
{
BablPalette **palptr = src_model_data;
BablPalette *pal;
assert (palptr);
pal = *palptr;
assert(pal);
while (n--)
{
dst[0] = babl_palette_lookup (pal, src[0], src[1], src[2], src[3]);
dst[1] = src[3];
src += sizeof (char) * 4;
dst += sizeof (char) * 2;
}
return n;
}
static void
rgba_u8_to_pal_a (Babl *conversion,
unsigned char *src,
unsigned char *dst,
long n,
void *src_model_data)
{
BablPalette **palptr = src_model_data;
BablPalette *pal;
int best_idx = 0;
assert (palptr);
pal = *palptr;
assert(pal);
while (n--)
{
dst[0] = best_idx = babl_palette_lookup (pal, src, best_idx);
dst[1] = src[3];
src += sizeof (char) * 4;
dst += sizeof (char) * 2;
}
}
