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