/* * The contents of this file are subject to the Mozilla Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/MPL/ *  * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. *  * The Original Code is MPEG4IP. *  * The Initial Developer of the Original Code is Cisco Systems Inc. * Portions created by Cisco Systems Inc. are * Copyright (C) Cisco Systems Inc. 2005.  All Rights Reserved. *  * Contributor(s):  *              Bill May     wmay@cisco.com *              Charlie Normand  charlienormand@cantab.net alias cpn24 */#include "video_util_convert.h"void convert_yuyv_to_yuv420p (uint8_t *dest, 			      const uint8_t *src, 			      uint32_t width, 			      uint32_t height){  uint8_t *pY = dest;  uint8_t *pU = pY + (width * height);  uint8_t *pV = pU + (width * height)/4;  uint32_t uv_offset = width * 4 * sizeof(uint8_t);  uint32_t ix, jx;  for (ix = 0; ix < height; ix++) {    for (jx = 0; jx < width; jx += 2) {      uint16_t calc;      *pY++ = *src++;      if ((ix&1) == 0) {	calc = *src;	calc += *(src + uv_offset);	calc /= 2;	*pU++ = (uint8_t) calc;      }      src++;      *pY++ = *src++;      if ((ix&1) == 0) {	calc = *src;	calc += *(src + uv_offset);	calc /= 2;	*pV++ = (uint8_t) calc;      }      src++;    }  }}void convert_uyvy_to_yuv420p (uint8_t *dest, 			      const uint8_t *src, 			      uint32_t width, 			      uint32_t height){  uint8_t *pY = dest;  uint8_t *pU = pY + (width * height);  uint8_t *pV = pU + (width * height)/4;  uint32_t uv_offset = width * 4 * sizeof(uint8_t);  uint32_t ix, jx;  for (ix = 0; ix < height; ix++) {    for (jx = 0; jx < width; jx += 2) {      uint16_t calc;      if ((ix&1) == 0) {	calc = *src;	calc += *(src + uv_offset);	calc /= 2;	*pU++ = (uint8_t) calc;      }      src++;      *pY++ = *src++;      if ((ix&1) == 0) {	calc = *src;	calc += *(src + uv_offset);	calc /= 2;	*pV++ = (uint8_t) calc;      }      src++;      *pY++ = *src++;    }  }}void convert_yyuv_to_yuv420p (uint8_t *dest, 			      const uint8_t *src, 			      uint32_t width, 			      uint32_t height){  uint8_t *pY = dest;  uint8_t *pU = pY + (width * height);  uint8_t *pV = pU + (width * height)/4;  uint32_t uv_offset = width * 4 * sizeof(uint8_t);  uint32_t ix, jx;  for (ix = 0; ix < height; ix++) {    for (jx = 0; jx < width; jx += 2) {      *pY++ = *src++;      *pY++ = *src++;      uint16_t calc;      if ((ix&1) == 0) {	calc = *src;	calc += *(src + uv_offset);	calc /= 2;	*pU++ = (uint8_t) calc;	src++;	calc = *src;	calc += *(src + uv_offset);	calc /= 2;	*pV++ = (uint8_t) calc;	src++;      } else src += 2;    }  }}void convert_nv12_to_yuv420p (uint8_t *dest,			      const uint8_t *src,			      uint32_t Ysize,			      uint32_t width, 			      uint32_t height){  // Y plane  uint8_t *u_dest, *v_dest;  const uint8_t *uv_src;  uint32_t ix, jx;  memcpy(dest, src, Ysize);  width /= 2;  height /= 2;  dest += Ysize;  src += Ysize;  uv_src = src;  u_dest = dest;  v_dest = dest + (width * height);  for (jx = 0; jx < height; jx++) {    for (ix = 0; ix < height; ix++) {      *u_dest++ = *uv_src++;      *v_dest++ = *uv_src++;    }  }}