| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved |
| * |
| * 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. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| /* |
| * fmtpixel.c |
| * |
| * Functions to format a single pixel |
| */ |
| |
| #include <inttypes.h> |
| #include "video.h" |
| |
| /* |
| * Format a sequence of pixels. The first argument is the line buffer; |
| * we can use it to write up to 4 bytes past the end of the last pixel. |
| * Return the place we should be copying from, this is usually the |
| * buffer address, but doesn't *have* to be. |
| */ |
| |
| static const void *format_pxf_bgra32(void *ptr, const uint32_t * p, size_t n) |
| { |
| (void)ptr; |
| (void)n; |
| return p; /* No conversion needed! */ |
| } |
| |
| static const void *format_pxf_bgr24(void *ptr, const uint32_t * p, size_t n) |
| { |
| char *q = ptr; |
| |
| while (n--) { |
| *(uint32_t *) q = *p++; |
| q += 3; |
| } |
| return ptr; |
| } |
| |
| static const void *format_pxf_le_rgb16_565(void *ptr, const uint32_t * p, |
| size_t n) |
| { |
| uint32_t bgra; |
| uint16_t *q = ptr; |
| |
| while (n--) { |
| bgra = *p++; |
| *q++ = |
| ((bgra >> 3) & 0x1f) + |
| ((bgra >> (2 + 8 - 5)) & (0x3f << 5)) + |
| ((bgra >> (3 + 16 - 11)) & (0x1f << 11)); |
| } |
| return ptr; |
| } |
| |
| static const void *format_pxf_le_rgb15_555(void *ptr, const uint32_t * p, |
| size_t n) |
| { |
| uint32_t bgra; |
| uint16_t *q = ptr; |
| |
| while (n--) { |
| bgra = *p++; |
| *q++ = |
| ((bgra >> 3) & 0x1f) + |
| ((bgra >> (2 + 8 - 5)) & (0x1f << 5)) + |
| ((bgra >> (3 + 16 - 10)) & (0x1f << 10)); |
| } |
| return ptr; |
| } |
| |
| __vesacon_format_pixels_t __vesacon_format_pixels; |
| |
| const __vesacon_format_pixels_t __vesacon_format_pixels_list[PXF_NONE] = { |
| [PXF_BGRA32] = format_pxf_bgra32, |
| [PXF_BGR24] = format_pxf_bgr24, |
| [PXF_LE_RGB16_565] = format_pxf_le_rgb16_565, |
| [PXF_LE_RGB15_555] = format_pxf_le_rgb15_555, |
| }; |