diff options
Diffstat (limited to 'nuttx/graphics/nxglib/nxglib_yuv2rgb.c')
-rw-r--r-- | nuttx/graphics/nxglib/nxglib_yuv2rgb.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/nuttx/graphics/nxglib/nxglib_yuv2rgb.c b/nuttx/graphics/nxglib/nxglib_yuv2rgb.c deleted file mode 100644 index cb4bb9f2f..000000000 --- a/nuttx/graphics/nxglib/nxglib_yuv2rgb.c +++ /dev/null @@ -1,102 +0,0 @@ -/**************************************************************************** - * graphics/color/nxglib_yuv2rgb.c - * - * Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <stdint.h> -#include <debug.h> -#include <fixedmath.h> - -#include <nuttx/nx/nxglib.h> - -/**************************************************************************** - * Pre-Processor Definitions - ****************************************************************************/ - -#define b16_P3441 0x0000581a /* 0.344147 */ -#define b16_P7141 0x0000b6d2 /* 0.714142 */ -#define b16_1P402 0x000166ea /* 1.402008 */ -#define b16_1P772 0x0001c5a2 /* 1.722003 */ -#define b16_128P0 0x00800000 /* 128.000000 */ - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: nxgl_yuv2rgb - * - * Description: - * Convert 8-bit RGB triplet to 8-bit YUV triplet - * - ****************************************************************************/ - -void nxgl_yuv2rgb(uint8_t y, uint8_t u, uint8_t v, - uint8_t *r, uint8_t *g, uint8_t *b) -{ - b16_t vm128 = itob16(v) - b16_128P0; - b16_t um128 = itob16(u) - b16_128P0; - - /* Per the JFIF specification: - * - * R = Y + 1.40200 * (V - 128.0) - * G = Y - 0.34414 * (U - 128.0) - 0.71414 * (V - 128.0) - * B = Y + 1.77200 * (U - 128.0) - */ - - *r = (uint8_t)b16toi(itob16(y) + b16muli(b16_1P402, vm128)); - *g = (uint8_t)b16toi(itob16(y) - b16muli(b16_P3441, um128) - b16muli(b16_P7141, vm128)); - *b = (uint8_t)b16toi(itob16(y) + b16muli(b16_1P772, um128)); -} |