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Diffstat (limited to 'src/hw/display/sm501_template.h')
| -rw-r--r-- | src/hw/display/sm501_template.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/hw/display/sm501_template.h b/src/hw/display/sm501_template.h new file mode 100644 index 0000000..f33e499 --- /dev/null +++ b/src/hw/display/sm501_template.h @@ -0,0 +1,145 @@ +/* + * Pixel drawing function templates for QEMU SM501 Device + * + * Copyright (c) 2008 Shin-ichiro KAWASAKI + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#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 + +#ifdef BGR_FORMAT +#define PIXEL_NAME glue(DEPTH, bgr) +#else +#define PIXEL_NAME DEPTH +#endif /* BGR_FORMAT */ + + +static void glue(draw_line8_, PIXEL_NAME)( + uint8_t *d, const uint8_t *s, int width, const uint32_t *pal) +{ + uint8_t v, r, g, b; + do { + v = ldub_p(s); + r = (pal[v] >> 16) & 0xff; + g = (pal[v] >> 8) & 0xff; + b = (pal[v] >> 0) & 0xff; + ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); + s ++; + d += BPP; + } while (-- width != 0); +} + +static void glue(draw_line16_, PIXEL_NAME)( + uint8_t *d, const uint8_t *s, int width, const uint32_t *pal) +{ + uint16_t rgb565; + uint8_t r, g, b; + + do { + rgb565 = lduw_p(s); + r = ((rgb565 >> 11) & 0x1f) << 3; + g = ((rgb565 >> 5) & 0x3f) << 2; + b = ((rgb565 >> 0) & 0x1f) << 3; + ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); + s += 2; + d += BPP; + } while (-- width != 0); +} + +static void glue(draw_line32_, PIXEL_NAME)( + uint8_t *d, const uint8_t *s, int width, const uint32_t *pal) +{ + uint8_t r, g, b; + + do { + ldub_p(s); +#if defined(TARGET_WORDS_BIGENDIAN) + r = s[1]; + g = s[2]; + b = s[3]; +#else + b = s[0]; + g = s[1]; + r = s[2]; +#endif + ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); + s += 4; + d += BPP; + } while (-- width != 0); +} + +/** + * Draw hardware cursor image on the given line. + */ +static void glue(draw_hwc_line_, PIXEL_NAME)(SM501State * s, int crt, + uint8_t * palette, int c_y, uint8_t *d, int width) +{ + int x, i; + uint8_t bitset = 0; + + /* get hardware cursor pattern */ + uint32_t cursor_addr = get_hwc_address(s, crt); + assert(0 <= c_y && c_y < SM501_HWC_HEIGHT); + cursor_addr += 64 * c_y / 4; /* 4 pixels per byte */ + cursor_addr += s->base; + + /* get cursor position */ + x = get_hwc_x(s, crt); + d += x * BPP; + + for (i = 0; i < SM501_HWC_WIDTH && x + i < width; i++) { + uint8_t v; + + /* get pixel value */ + if (i % 4 == 0) { + bitset = ldub_phys(&address_space_memory, cursor_addr); + cursor_addr++; + } + v = bitset & 3; + bitset >>= 2; + + /* write pixel */ + if (v) { + v--; + uint8_t r = palette[v * 3 + 0]; + uint8_t g = palette[v * 3 + 1]; + uint8_t b = palette[v * 3 + 2]; + ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b); + } + d += BPP; + } +} + +#undef DEPTH +#undef BPP +#undef PIXEL_TYPE +#undef PIXEL_NAME +#undef BGR_FORMAT |
