YUV转RGB常用函数
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转自：huiguixian的专栏
http://m.blog.csdn.net/blog/huiguixian_11109/17334195
public class YuvToRGB { private static int R = 0; private static int G = 1; private static int B = 2; //I420是yuv420格式，是3个plane，排列方式为(Y)(U)(V) public static int[] I420ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int positionOfV = numOfPixel; int positionOfU = numOfPixel/4 + numOfPixel; int[] rgb = new int[numOfPixel*3]; for(int i=0; i<height; i++){ int startY = i*width; int step = (i/2)*(width/2); int startU = positionOfV + step; int startV = positionOfU + step; for(int j = 0; j < width; j++){ int Y = startY + j; int U = startU + j/2; int V = startV + j/2; int index = Y*3; RGB tmp = yuvTorgb(src[Y], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } private static class RGB{ public int r, g, b; } private static RGB yuvTorgb(byte Y, byte U, byte V){ RGB rgb = new RGB(); rgb.r = (int)((Y&0xff) + 1.4075 * ((V&0xff)-128)); rgb.g = (int)((Y&0xff) - 0.3455 * ((U&0xff)-128) - 0.7169*((V&0xff)-128)); rgb.b = (int)((Y&0xff) + 1.779 * ((U&0xff)-128)); rgb.r =(rgb.r<0? 0: rgb.r>255? 255 : rgb.r); rgb.g =(rgb.g<0? 0: rgb.g>255? 255 : rgb.g); rgb.b =(rgb.b<0? 0: rgb.b>255? 255 : rgb.b); return rgb; } //YV16是yuv422格式，是三个plane，(Y)(U)(V) public static int[] YV16ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int positionOfU = numOfPixel; int positionOfV = numOfPixel/2 + numOfPixel; int[] rgb = new int[numOfPixel*3]; for(int i=0; i<height; i++){ int startY = i*width; int step = i*width/2; int startU = positionOfU + step; int startV = positionOfV + step; for(int j = 0; j < width; j++){ int Y = startY + j; int U = startU + j/2; int V = startV + j/2; int index = Y*3; //rgb[index+R] = (int)((src[Y]&0xff) + 1.4075 * ((src[V]&0xff)-128)); //rgb[index+G] = (int)((src[Y]&0xff) - 0.3455 * ((src[U]&0xff)-128) - 0.7169*((src[V]&0xff)-128)); //rgb[index+B] = (int)((src[Y]&0xff) + 1.779 * ((src[U]&0xff)-128)); RGB tmp = yuvTorgb(src[Y], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //YV12是yuv420格式，是3个plane，排列方式为(Y)(V)(U) public static int[] YV12ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int positionOfV = numOfPixel; int positionOfU = numOfPixel/4 + numOfPixel; int[] rgb = new int[numOfPixel*3]; for(int i=0; i<height; i++){ int startY = i*width; int step = (i/2)*(width/2); int startV = positionOfV + step; int startU = positionOfU + step; for(int j = 0; j < width; j++){ int Y = startY + j; int V = startV + j/2; int U = startU + j/2; int index = Y*3; //rgb[index+R] = (int)((src[Y]&0xff) + 1.4075 * ((src[V]&0xff)-128)); //rgb[index+G] = (int)((src[Y]&0xff) - 0.3455 * ((src[U]&0xff)-128) - 0.7169*((src[V]&0xff)-128)); //rgb[index+B] = (int)((src[Y]&0xff) + 1.779 * ((src[U]&0xff)-128)); RGB tmp = yuvTorgb(src[Y], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //YUY2是YUV422格式，排列是(YUYV)，是1 plane public static int[] YUY2ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int[] rgb = new int[numOfPixel*3]; int lineWidth = 2*width; for(int i=0; i<height; i++){ int startY = i*lineWidth; for(int j = 0; j < lineWidth; j+=4){ int Y1 = j + startY; int Y2 = Y1+2; int U = Y1+1; int V = Y1+3; int index = (Y1>>1)*3; RGB tmp = yuvTorgb(src[Y1], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; index += 3; tmp = yuvTorgb(src[Y2], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //UYVY是YUV422格式，排列是(UYVY)，是1 plane public static int[] UYVYToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int[] rgb = new int[numOfPixel*3]; int lineWidth = 2*width; for(int i=0; i<height; i++){ int startU = i*lineWidth; for(int j = 0; j < lineWidth; j+=4){ int U = j + startU; int Y1 = U+1; int Y2 = U+3; int V = U+2; int index = (U>>1)*3; RGB tmp = yuvTorgb(src[Y1], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; index += 3; tmp = yuvTorgb(src[Y2], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //NV21是YUV420格式，排列是(Y), (VU)，是2 plane public static int[] NV21ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int positionOfV = numOfPixel; int[] rgb = new int[numOfPixel*3]; for(int i=0; i<height; i++){ int startY = i*width; int step = i/2*width; int startV = positionOfV + step; for(int j = 0; j < width; j++){ int Y = startY + j; int V = startV + j/2; int U = V + 1; int index = Y*3; RGB tmp = yuvTorgb(src[Y], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //NV12是YUV420格式，排列是(Y), (UV)，是2 plane public static int[] NV12ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int positionOfU = numOfPixel; int[] rgb = new int[numOfPixel*3]; for(int i=0; i<height; i++){ int startY = i*width; int step = i/2*width; int startU = positionOfU + step; for(int j = 0; j < width; j++){ int Y = startY + j; int U = startU + j/2; int V = U + 1; int index = Y*3; RGB tmp = yuvTorgb(src[Y], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //NV16是YUV422格式，排列是(Y), (UV)，是2 plane public static int[] NV16ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int positionOfU = numOfPixel; int[] rgb = new int[numOfPixel*3]; for(int i=0; i<height; i++){ int startY = i*width; int step = i*width; int startU = positionOfU + step; for(int j = 0; j < width; j++){ int Y = startY + j; int U = startU + j/2; int V = U + 1; int index = Y*3; RGB tmp = yuvTorgb(src[Y], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //NV61是YUV422格式，排列是(Y), (VU)，是2 plane public static int[] NV61ToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int positionOfV = numOfPixel; int[] rgb = new int[numOfPixel*3]; for(int i=0; i<height; i++){ int startY = i*width; int step = i*width; int startV = positionOfV + step; for(int j = 0; j < width; j++){ int Y = startY + j; int V = startV + j/2; int U = V + 1; int index = Y*3; RGB tmp = yuvTorgb(src[Y], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //YVYU是YUV422格式，排列是(YVYU)，是1 plane public static int[] YVYUToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int[] rgb = new int[numOfPixel*3]; int lineWidth = 2*width; for(int i=0; i<height; i++){ int startY = i*lineWidth; for(int j = 0; j < lineWidth; j+=4){ int Y1 = j + startY; int Y2 = Y1+2; int V = Y1+1; int U = Y1+3; int index = (Y1>>1)*3; RGB tmp = yuvTorgb(src[Y1], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; index += 3; tmp = yuvTorgb(src[Y2], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; } //VYUY是YUV422格式，排列是(VYUY)，是1 plane public static int[] VYUYToRGB(byte[] src, int width, int height){ int numOfPixel = width * height; int[] rgb = new int[numOfPixel*3]; int lineWidth = 2*width; for(int i=0; i<height; i++){ int startV = i*lineWidth; for(int j = 0; j < lineWidth; j+=4){ int V = j + startV; int Y1 = V+1; int Y2 = V+3; int U = V+2; int index = (U>>1)*3; RGB tmp = yuvTorgb(src[Y1], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; index += 3; tmp = yuvTorgb(src[Y2], src[U], src[V]); rgb[index+R] = tmp.r; rgb[index+G] = tmp.g; rgb[index+B] = tmp.b; } } return rgb; }} 0 0
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