| /* |
| * Arm PrimeCell PL110 Color LCD Controller |
| * |
| * Copyright (c) 2005 CodeSourcery, LLC. |
| * Written by Paul Brook |
| * |
| * This code is licensed under the GNU LGPL |
| * |
| * Framebuffer format conversion routines. |
| */ |
| |
| #ifndef ORDER |
| |
| #if BITS == 8 |
| #define COPY_PIXEL(to, from) *(to++) = from |
| #elif BITS == 15 || BITS == 16 |
| #define COPY_PIXEL(to, from) do { *(uint16_t *)to = from; to += 2; } while (0) |
| #elif BITS == 24 |
| #define COPY_PIXEL(to, from) \ |
| do { \ |
| *(to++) = from; \ |
| *(to++) = (from) >> 8; \ |
| *(to++) = (from) >> 16; \ |
| } while (0) |
| #elif BITS == 32 |
| #define COPY_PIXEL(to, from) do { *(uint32_t *)to = from; to += 4; } while (0) |
| #else |
| #error unknown bit depth |
| #endif |
| |
| #undef RGB |
| #define BORDER bgr |
| #define ORDER 0 |
| #include "pl110_template.h" |
| #define ORDER 1 |
| #include "pl110_template.h" |
| #define ORDER 2 |
| #include "pl110_template.h" |
| #undef BORDER |
| #define RGB |
| #define BORDER rgb |
| #define ORDER 0 |
| #include "pl110_template.h" |
| #define ORDER 1 |
| #include "pl110_template.h" |
| #define ORDER 2 |
| #include "pl110_template.h" |
| #undef BORDER |
| |
| static drawfn glue(pl110_draw_fn_,BITS)[48] = |
| { |
| glue(pl110_draw_line1_lblp_bgr,BITS), |
| glue(pl110_draw_line2_lblp_bgr,BITS), |
| glue(pl110_draw_line4_lblp_bgr,BITS), |
| glue(pl110_draw_line8_lblp_bgr,BITS), |
| glue(pl110_draw_line16_555_lblp_bgr,BITS), |
| glue(pl110_draw_line32_lblp_bgr,BITS), |
| glue(pl110_draw_line16_lblp_bgr,BITS), |
| glue(pl110_draw_line12_lblp_bgr,BITS), |
| |
| glue(pl110_draw_line1_bbbp_bgr,BITS), |
| glue(pl110_draw_line2_bbbp_bgr,BITS), |
| glue(pl110_draw_line4_bbbp_bgr,BITS), |
| glue(pl110_draw_line8_bbbp_bgr,BITS), |
| glue(pl110_draw_line16_555_bbbp_bgr,BITS), |
| glue(pl110_draw_line32_bbbp_bgr,BITS), |
| glue(pl110_draw_line16_bbbp_bgr,BITS), |
| glue(pl110_draw_line12_bbbp_bgr,BITS), |
| |
| glue(pl110_draw_line1_lbbp_bgr,BITS), |
| glue(pl110_draw_line2_lbbp_bgr,BITS), |
| glue(pl110_draw_line4_lbbp_bgr,BITS), |
| glue(pl110_draw_line8_lbbp_bgr,BITS), |
| glue(pl110_draw_line16_555_lbbp_bgr,BITS), |
| glue(pl110_draw_line32_lbbp_bgr,BITS), |
| glue(pl110_draw_line16_lbbp_bgr,BITS), |
| glue(pl110_draw_line12_lbbp_bgr,BITS), |
| |
| glue(pl110_draw_line1_lblp_rgb,BITS), |
| glue(pl110_draw_line2_lblp_rgb,BITS), |
| glue(pl110_draw_line4_lblp_rgb,BITS), |
| glue(pl110_draw_line8_lblp_rgb,BITS), |
| glue(pl110_draw_line16_555_lblp_rgb,BITS), |
| glue(pl110_draw_line32_lblp_rgb,BITS), |
| glue(pl110_draw_line16_lblp_rgb,BITS), |
| glue(pl110_draw_line12_lblp_rgb,BITS), |
| |
| glue(pl110_draw_line1_bbbp_rgb,BITS), |
| glue(pl110_draw_line2_bbbp_rgb,BITS), |
| glue(pl110_draw_line4_bbbp_rgb,BITS), |
| glue(pl110_draw_line8_bbbp_rgb,BITS), |
| glue(pl110_draw_line16_555_bbbp_rgb,BITS), |
| glue(pl110_draw_line32_bbbp_rgb,BITS), |
| glue(pl110_draw_line16_bbbp_rgb,BITS), |
| glue(pl110_draw_line12_bbbp_rgb,BITS), |
| |
| glue(pl110_draw_line1_lbbp_rgb,BITS), |
| glue(pl110_draw_line2_lbbp_rgb,BITS), |
| glue(pl110_draw_line4_lbbp_rgb,BITS), |
| glue(pl110_draw_line8_lbbp_rgb,BITS), |
| glue(pl110_draw_line16_555_lbbp_rgb,BITS), |
| glue(pl110_draw_line32_lbbp_rgb,BITS), |
| glue(pl110_draw_line16_lbbp_rgb,BITS), |
| glue(pl110_draw_line12_lbbp_rgb,BITS), |
| }; |
| |
| #undef BITS |
| #undef COPY_PIXEL |
| |
| #else |
| |
| #if ORDER == 0 |
| #define NAME glue(glue(lblp_, BORDER), BITS) |
| #ifdef HOST_WORDS_BIGENDIAN |
| #define SWAP_WORDS 1 |
| #endif |
| #elif ORDER == 1 |
| #define NAME glue(glue(bbbp_, BORDER), BITS) |
| #ifndef HOST_WORDS_BIGENDIAN |
| #define SWAP_WORDS 1 |
| #endif |
| #else |
| #define SWAP_PIXELS 1 |
| #define NAME glue(glue(lbbp_, BORDER), BITS) |
| #ifdef HOST_WORDS_BIGENDIAN |
| #define SWAP_WORDS 1 |
| #endif |
| #endif |
| |
| #define FN_2(x, y) FN(x, y) FN(x+1, y) |
| #define FN_4(x, y) FN_2(x, y) FN_2(x+2, y) |
| #define FN_8(y) FN_4(0, y) FN_4(4, y) |
| |
| static void glue(pl110_draw_line1_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| uint32_t *palette = opaque; |
| uint32_t data; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #ifdef SWAP_PIXELS |
| #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 7 - (x))) & 1]); |
| #else |
| #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x) + y)) & 1]); |
| #endif |
| #ifdef SWAP_WORDS |
| FN_8(24) |
| FN_8(16) |
| FN_8(8) |
| FN_8(0) |
| #else |
| FN_8(0) |
| FN_8(8) |
| FN_8(16) |
| FN_8(24) |
| #endif |
| #undef FN |
| width -= 32; |
| src += 4; |
| } |
| } |
| |
| static void glue(pl110_draw_line2_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| uint32_t *palette = opaque; |
| uint32_t data; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #ifdef SWAP_PIXELS |
| #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 6 - (x)*2)) & 3]); |
| #else |
| #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*2 + y)) & 3]); |
| #endif |
| #ifdef SWAP_WORDS |
| FN_4(0, 24) |
| FN_4(0, 16) |
| FN_4(0, 8) |
| FN_4(0, 0) |
| #else |
| FN_4(0, 0) |
| FN_4(0, 8) |
| FN_4(0, 16) |
| FN_4(0, 24) |
| #endif |
| #undef FN |
| width -= 16; |
| src += 4; |
| } |
| } |
| |
| static void glue(pl110_draw_line4_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| uint32_t *palette = opaque; |
| uint32_t data; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #ifdef SWAP_PIXELS |
| #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 4 - (x)*4)) & 0xf]); |
| #else |
| #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*4 + y)) & 0xf]); |
| #endif |
| #ifdef SWAP_WORDS |
| FN_2(0, 24) |
| FN_2(0, 16) |
| FN_2(0, 8) |
| FN_2(0, 0) |
| #else |
| FN_2(0, 0) |
| FN_2(0, 8) |
| FN_2(0, 16) |
| FN_2(0, 24) |
| #endif |
| #undef FN |
| width -= 8; |
| src += 4; |
| } |
| } |
| |
| static void glue(pl110_draw_line8_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| uint32_t *palette = opaque; |
| uint32_t data; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #define FN(x) COPY_PIXEL(d, palette[(data >> (x)) & 0xff]); |
| #ifdef SWAP_WORDS |
| FN(24) |
| FN(16) |
| FN(8) |
| FN(0) |
| #else |
| FN(0) |
| FN(8) |
| FN(16) |
| FN(24) |
| #endif |
| #undef FN |
| width -= 4; |
| src += 4; |
| } |
| } |
| |
| static void glue(pl110_draw_line16_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| uint32_t data; |
| unsigned int r, g, b; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #ifdef SWAP_WORDS |
| data = bswap32(data); |
| #endif |
| #ifdef RGB |
| #define LSB r |
| #define MSB b |
| #else |
| #define LSB b |
| #define MSB r |
| #endif |
| #if 0 |
| LSB = data & 0x1f; |
| data >>= 5; |
| g = data & 0x3f; |
| data >>= 6; |
| MSB = data & 0x1f; |
| data >>= 5; |
| #else |
| LSB = (data & 0x1f) << 3; |
| data >>= 5; |
| g = (data & 0x3f) << 2; |
| data >>= 6; |
| MSB = (data & 0x1f) << 3; |
| data >>= 5; |
| #endif |
| COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
| LSB = (data & 0x1f) << 3; |
| data >>= 5; |
| g = (data & 0x3f) << 2; |
| data >>= 6; |
| MSB = (data & 0x1f) << 3; |
| data >>= 5; |
| COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
| #undef MSB |
| #undef LSB |
| width -= 2; |
| src += 4; |
| } |
| } |
| |
| static void glue(pl110_draw_line32_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| uint32_t data; |
| unsigned int r, g, b; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #ifdef RGB |
| #define LSB r |
| #define MSB b |
| #else |
| #define LSB b |
| #define MSB r |
| #endif |
| #ifndef SWAP_WORDS |
| LSB = data & 0xff; |
| g = (data >> 8) & 0xff; |
| MSB = (data >> 16) & 0xff; |
| #else |
| LSB = (data >> 24) & 0xff; |
| g = (data >> 16) & 0xff; |
| MSB = (data >> 8) & 0xff; |
| #endif |
| COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
| #undef MSB |
| #undef LSB |
| width--; |
| src += 4; |
| } |
| } |
| |
| static void glue(pl110_draw_line16_555_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| /* RGB 555 plus an intensity bit (which we ignore) */ |
| uint32_t data; |
| unsigned int r, g, b; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #ifdef SWAP_WORDS |
| data = bswap32(data); |
| #endif |
| #ifdef RGB |
| #define LSB r |
| #define MSB b |
| #else |
| #define LSB b |
| #define MSB r |
| #endif |
| LSB = (data & 0x1f) << 3; |
| data >>= 5; |
| g = (data & 0x1f) << 3; |
| data >>= 5; |
| MSB = (data & 0x1f) << 3; |
| data >>= 5; |
| COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
| LSB = (data & 0x1f) << 3; |
| data >>= 5; |
| g = (data & 0x1f) << 3; |
| data >>= 5; |
| MSB = (data & 0x1f) << 3; |
| data >>= 6; |
| COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
| #undef MSB |
| #undef LSB |
| width -= 2; |
| src += 4; |
| } |
| } |
| |
| static void glue(pl110_draw_line12_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep) |
| { |
| /* RGB 444 with 4 bits of zeroes at the top of each halfword */ |
| uint32_t data; |
| unsigned int r, g, b; |
| while (width > 0) { |
| data = *(uint32_t *)src; |
| #ifdef SWAP_WORDS |
| data = bswap32(data); |
| #endif |
| #ifdef RGB |
| #define LSB r |
| #define MSB b |
| #else |
| #define LSB b |
| #define MSB r |
| #endif |
| LSB = (data & 0xf) << 4; |
| data >>= 4; |
| g = (data & 0xf) << 4; |
| data >>= 4; |
| MSB = (data & 0xf) << 4; |
| data >>= 8; |
| COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
| LSB = (data & 0xf) << 4; |
| data >>= 4; |
| g = (data & 0xf) << 4; |
| data >>= 4; |
| MSB = (data & 0xf) << 4; |
| data >>= 8; |
| COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b)); |
| #undef MSB |
| #undef LSB |
| width -= 2; |
| src += 4; |
| } |
| } |
| |
| #undef SWAP_PIXELS |
| #undef NAME |
| #undef SWAP_WORDS |
| #undef ORDER |
| |
| #endif |
