/*
* QEMU OMAP LCD Emulator templates
*
* Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if DEPTH == 8
# define BPP 1
# define PIXEL_TYPE uint8_t
#elif DEPTH == 15 || DEPTH == 16
# define BPP 2
# define PIXEL_TYPE uint16_t
#elif DEPTH == 32
# define BPP 4
# define PIXEL_TYPE uint32_t
#else
# error unsupport depth
#endif
/*
* 2-bit colour
*/
static void glue(draw_line2_, DEPTH)(void *opaque,
uint8_t *d, const uint8_t *s, int width, int deststep)
{
uint16_t *pal = opaque;
uint8_t v, r, g, b;
do {
v = ldub_p((void *) s);
r = (pal[v & 3] >> 4) & 0xf0;
g = pal[v & 3] & 0xf0;
b = (pal[v & 3] << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
d += BPP;
v >>= 2;
r = (pal[v & 3] >> 4) & 0xf0;
g = pal[v & 3] & 0xf0;
b = (pal[v & 3] << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
d += BPP;
v >>= 2;
r = (pal[v & 3] >> 4) & 0xf0;
g = pal[v & 3] & 0xf0;
b = (pal[v & 3] << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
d += BPP;
v >>= 2;
r = (pal[v & 3] >> 4) & 0xf0;
g = pal[v & 3] & 0xf0;
b = (pal[v & 3] << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
d += BPP;
s ++;
width -= 4;
} while (width > 0);
}
/*
* 4-bit colour
*/
static void glue(draw_line4_, DEPTH)(void *opaque,
uint8_t *d, const uint8_t *s, int width, int deststep)
{
uint16_t *pal = opaque;
uint8_t v, r, g, b;
do {
v = ldub_p((void *) s);
r = (pal[v & 0xf] >> 4) & 0xf0;
g = pal[v & 0xf] & 0xf0;
b = (pal[v & 0xf] << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
d += BPP;
v >>= 4;
r = (pal[v & 0xf] >> 4) & 0xf0;
g = pal[v & 0xf] & 0xf0;
b = (pal[v & 0xf] << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
d += BPP;
s ++;
width -= 2;
} while (width > 0);
}
/*
* 8-bit colour
*/
static void glue(draw_line8_, DEPTH)(void *opaque,
uint8_t *d, const uint8_t *s, int width, int deststep)
{
uint16_t *pal = opaque;
uint8_t v, r, g, b;
do {
v = ldub_p((void *) s);
r = (pal[v] >> 4) & 0xf0;
g = pal[v] & 0xf0;
b = (pal[v] << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
s ++;
d += BPP;
} while (-- width != 0);
}
/*
* 12-bit colour
*/
static void glue(draw_line12_, DEPTH)(void *opaque,
uint8_t *d, const uint8_t *s, int width, int deststep)
{
uint16_t v;
uint8_t r, g, b;
do {
v = lduw_p((void *) s);
r = (v >> 4) & 0xf0;
g = v & 0xf0;
b = (v << 4) & 0xf0;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
s += 2;
d += BPP;
} while (-- width != 0);
}
/*
* 16-bit colour
*/
static void glue(draw_line16_, DEPTH)(void *opaque,
uint8_t *d, const uint8_t *s, int width, int deststep)
{
#if DEPTH == 16 && defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
memcpy(d, s, width * 2);
#else
uint16_t v;
uint8_t r, g, b;
do {
v = lduw_p((void *) s);
r = (v >> 8) & 0xf8;
g = (v >> 3) & 0xfc;
b = (v << 3) & 0xf8;
((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
s += 2;
d += BPP;
} while (-- width != 0);
#endif
}
#undef DEPTH
#undef BPP
#undef PIXEL_TYPE
