root / hw / pxa2xx_template.h @ aba35a6c
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/*
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* Intel XScale PXA255/270 LCDC emulation.
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*
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* Copyright (c) 2006 Openedhand Ltd.
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* Written by Andrzej Zaborowski <balrog@zabor.org>
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*
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* This code is licensed under the GPLv2.
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*
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* Framebuffer format conversion routines.
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*/
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# define SKIP_PIXEL(to) to += deststep
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#if BITS == 8 |
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# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
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#elif BITS == 15 || BITS == 16 |
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# define COPY_PIXEL(to, from) *(uint16_t *) to = from; SKIP_PIXEL(to)
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#elif BITS == 24 |
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# define COPY_PIXEL(to, from) \
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*(uint16_t *) to = from; *(to + 2) = (from) >> 16; SKIP_PIXEL(to) |
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#elif BITS == 32 |
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# define COPY_PIXEL(to, from) *(uint32_t *) to = from; SKIP_PIXEL(to)
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#else
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# error unknown bit depth
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#endif
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#ifdef WORDS_BIGENDIAN
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# define SWAP_WORDS 1 |
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#endif
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#define FN_2(x) FN(x + 1) FN(x) |
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#define FN_4(x) FN_2(x + 2) FN_2(x) |
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static void glue(pxa2xx_draw_line2_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#define FN(x) COPY_PIXEL(dest, palette[(data >> ((x) * 2)) & 3]); |
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#ifdef SWAP_WORDS
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FN_4(12)
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FN_4(8)
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FN_4(4)
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FN_4(0)
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#else
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FN_4(0)
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FN_4(4)
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FN_4(8)
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FN_4(12)
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#endif
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#undef FN
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width -= 16;
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src += 4;
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} |
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} |
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static void glue(pxa2xx_draw_line4_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#define FN(x) COPY_PIXEL(dest, palette[(data >> ((x) * 4)) & 0xf]); |
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#ifdef SWAP_WORDS
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FN_2(6)
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FN_2(4)
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FN_2(2)
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FN_2(0)
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#else
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FN_2(0)
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FN_2(2)
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FN_2(4)
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FN_2(6)
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#endif
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#undef FN
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width -= 8;
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src += 4;
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} |
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} |
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static void glue(pxa2xx_draw_line8_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#define FN(x) COPY_PIXEL(dest, palette[(data >> (x)) & 0xff]); |
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#ifdef SWAP_WORDS
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FN(24)
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FN(16)
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FN(8)
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FN(0)
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#else
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FN(0)
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FN(8)
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FN(16)
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FN(24)
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#endif
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#undef FN
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width -= 4;
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src += 4;
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} |
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} |
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static void glue(pxa2xx_draw_line16_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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unsigned int r, g, b; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#ifdef SWAP_WORDS
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data = bswap32(data); |
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#endif
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b = (data & 0x1f) << 3; |
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data >>= 5;
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g = (data & 0x3f) << 2; |
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data >>= 6;
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r = (data & 0x1f) << 3; |
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data >>= 5;
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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b = (data & 0x1f) << 3; |
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data >>= 5;
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g = (data & 0x3f) << 2; |
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data >>= 6;
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r = (data & 0x1f) << 3; |
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 2;
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src += 4;
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} |
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} |
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static void glue(pxa2xx_draw_line16t_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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unsigned int r, g, b; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#ifdef SWAP_WORDS
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data = bswap32(data); |
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#endif
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b = (data & 0x1f) << 3; |
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data >>= 5;
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g = (data & 0x1f) << 3; |
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data >>= 5;
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r = (data & 0x1f) << 3; |
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data >>= 5;
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if (data & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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data >>= 1;
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b = (data & 0x1f) << 3; |
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data >>= 5;
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g = (data & 0x1f) << 3; |
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data >>= 5;
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r = (data & 0x1f) << 3; |
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data >>= 5;
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if (data & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 2;
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src += 4;
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} |
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} |
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static void glue(pxa2xx_draw_line18_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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unsigned int r, g, b; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#ifdef SWAP_WORDS
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data = bswap32(data); |
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#endif
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b = (data & 0x3f) << 2; |
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data >>= 6;
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g = (data & 0x3f) << 2; |
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data >>= 6;
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r = (data & 0x3f) << 2; |
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 1;
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src += 4;
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} |
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} |
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/* The wicked packed format */
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static void glue(pxa2xx_draw_line18p_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data[3];
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unsigned int r, g, b; |
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while (width > 0) { |
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data[0] = *(uint32_t *) src;
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src += 4;
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data[1] = *(uint32_t *) src;
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src += 4;
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data[2] = *(uint32_t *) src;
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src += 4;
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#ifdef SWAP_WORDS
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data[0] = bswap32(data[0]); |
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data[1] = bswap32(data[1]); |
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data[2] = bswap32(data[2]); |
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#endif
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b = (data[0] & 0x3f) << 2; |
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data[0] >>= 6; |
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g = (data[0] & 0x3f) << 2; |
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data[0] >>= 6; |
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r = (data[0] & 0x3f) << 2; |
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data[0] >>= 12; |
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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b = (data[0] & 0x3f) << 2; |
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data[0] >>= 6; |
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g = ((data[1] & 0xf) << 4) | (data[0] << 2); |
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data[1] >>= 4; |
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r = (data[1] & 0x3f) << 2; |
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data[1] >>= 12; |
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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b = (data[1] & 0x3f) << 2; |
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data[1] >>= 6; |
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g = (data[1] & 0x3f) << 2; |
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data[1] >>= 6; |
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r = ((data[2] & 0x3) << 6) | (data[1] << 2); |
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data[2] >>= 8; |
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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b = (data[2] & 0x3f) << 2; |
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data[2] >>= 6; |
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g = (data[2] & 0x3f) << 2; |
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data[2] >>= 6; |
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r = data[2] << 2; |
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 4;
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} |
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} |
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static void glue(pxa2xx_draw_line19_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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unsigned int r, g, b; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#ifdef SWAP_WORDS
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data = bswap32(data); |
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#endif
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b = (data & 0x3f) << 2; |
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data >>= 6;
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g = (data & 0x3f) << 2; |
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data >>= 6;
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r = (data & 0x3f) << 2; |
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data >>= 6;
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if (data & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 1;
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src += 4;
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} |
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} |
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/* The wicked packed format */
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static void glue(pxa2xx_draw_line19p_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data[3];
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unsigned int r, g, b; |
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while (width > 0) { |
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data[0] = *(uint32_t *) src;
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src += 4;
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data[1] = *(uint32_t *) src;
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src += 4;
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data[2] = *(uint32_t *) src;
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src += 4;
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# ifdef SWAP_WORDS
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data[0] = bswap32(data[0]); |
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data[1] = bswap32(data[1]); |
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data[2] = bswap32(data[2]); |
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# endif
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b = (data[0] & 0x3f) << 2; |
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data[0] >>= 6; |
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g = (data[0] & 0x3f) << 2; |
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data[0] >>= 6; |
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r = (data[0] & 0x3f) << 2; |
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data[0] >>= 6; |
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if (data[0] & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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data[0] >>= 6; |
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b = (data[0] & 0x3f) << 2; |
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data[0] >>= 6; |
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g = ((data[1] & 0xf) << 4) | (data[0] << 2); |
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data[1] >>= 4; |
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r = (data[1] & 0x3f) << 2; |
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data[1] >>= 6; |
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if (data[1] & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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data[1] >>= 6; |
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b = (data[1] & 0x3f) << 2; |
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data[1] >>= 6; |
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g = (data[1] & 0x3f) << 2; |
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data[1] >>= 6; |
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r = ((data[2] & 0x3) << 6) | (data[1] << 2); |
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data[2] >>= 2; |
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if (data[2] & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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data[2] >>= 6; |
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b = (data[2] & 0x3f) << 2; |
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data[2] >>= 6; |
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g = (data[2] & 0x3f) << 2; |
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data[2] >>= 6; |
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r = data[2] << 2; |
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data[2] >>= 6; |
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if (data[2] & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 4;
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} |
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} |
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static void glue(pxa2xx_draw_line24_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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unsigned int r, g, b; |
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while (width > 0) { |
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data = *(uint32_t *) src; |
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#ifdef SWAP_WORDS
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data = bswap32(data); |
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#endif
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b = data & 0xff;
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data >>= 8;
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g = data & 0xff;
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data >>= 8;
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r = data & 0xff;
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 1;
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src += 4;
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} |
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} |
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|
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static void glue(pxa2xx_draw_line24t_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
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{
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uint32_t data; |
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unsigned int r, g, b; |
| 355 |
while (width > 0) { |
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data = *(uint32_t *) src; |
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#ifdef SWAP_WORDS
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data = bswap32(data); |
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#endif
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b = (data & 0x7f) << 1; |
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data >>= 7;
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g = data & 0xff;
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data >>= 8;
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r = data & 0xff;
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data >>= 8;
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if (data & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 1;
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src += 4;
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} |
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} |
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|
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static void glue(pxa2xx_draw_line25_, BITS)(uint32_t *palette, |
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uint8_t *dest, const uint8_t *src, int width, int deststep) |
| 377 |
{
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uint32_t data; |
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unsigned int r, g, b; |
| 380 |
while (width > 0) { |
| 381 |
data = *(uint32_t *) src; |
| 382 |
#ifdef SWAP_WORDS
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data = bswap32(data); |
| 384 |
#endif
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b = data & 0xff;
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data >>= 8;
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g = data & 0xff;
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data >>= 8;
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r = data & 0xff;
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data >>= 8;
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if (data & 1) |
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SKIP_PIXEL(dest); |
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else
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COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b)); |
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width -= 1;
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src += 4;
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} |
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} |
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|
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/* Overlay planes disabled, no transparency */
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static drawfn glue(pxa2xx_draw_fn_, BITS)[16] = |
| 402 |
{
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[0 ... 0xf] = 0, |
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[pxa_lcdc_2bpp] = glue(pxa2xx_draw_line2_, BITS), |
| 405 |
[pxa_lcdc_4bpp] = glue(pxa2xx_draw_line4_, BITS), |
| 406 |
[pxa_lcdc_8bpp] = glue(pxa2xx_draw_line8_, BITS), |
| 407 |
[pxa_lcdc_16bpp] = glue(pxa2xx_draw_line16_, BITS), |
| 408 |
[pxa_lcdc_18bpp] = glue(pxa2xx_draw_line18_, BITS), |
| 409 |
[pxa_lcdc_18pbpp] = glue(pxa2xx_draw_line18p_, BITS), |
| 410 |
[pxa_lcdc_24bpp] = glue(pxa2xx_draw_line24_, BITS), |
| 411 |
}; |
| 412 |
|
| 413 |
/* Overlay planes enabled, transparency used */
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static drawfn glue(glue(pxa2xx_draw_fn_, BITS), t)[16] = |
| 415 |
{
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[0 ... 0xf] = 0, |
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[pxa_lcdc_4bpp] = glue(pxa2xx_draw_line4_, BITS), |
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[pxa_lcdc_8bpp] = glue(pxa2xx_draw_line8_, BITS), |
| 419 |
[pxa_lcdc_16bpp] = glue(pxa2xx_draw_line16t_, BITS), |
| 420 |
[pxa_lcdc_19bpp] = glue(pxa2xx_draw_line19_, BITS), |
| 421 |
[pxa_lcdc_19pbpp] = glue(pxa2xx_draw_line19p_, BITS), |
| 422 |
[pxa_lcdc_24bpp] = glue(pxa2xx_draw_line24t_, BITS), |
| 423 |
[pxa_lcdc_25bpp] = glue(pxa2xx_draw_line25_, BITS), |
| 424 |
}; |
| 425 |
|
| 426 |
#undef BITS
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| 427 |
#undef COPY_PIXEL
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| 428 |
#undef SKIP_PIXEL
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| 429 |
|
| 430 |
#ifdef SWAP_WORDS
|
| 431 |
# undef SWAP_WORDS
|
| 432 |
#endif
|