Android常见的几种YUV格式包括NV21、NV12、YV12和YUV420P等

NV21转NV12

public static void NV21ToNV12(byte[] nv21, byte[] nv12, int width, int height) {System.arraycopy(nv21, 0, nv12, 0, width * height);for (int i = width * height; i < nv21.length; i += 2) {nv12[i] = nv21[i + 1];nv12[i + 1] = nv21[i];}
}

NV12转NV21

public static void NV12ToNV21(byte[] nv12, byte[] nv21, int width, int height) {System.arraycopy(nv12, 0, nv21, 0, width * height);for (int i = width * height; i < nv12.length; i += 2) {nv21[i] = nv12[i + 1];nv21[i + 1] = nv12[i];}
}

YV12转I420

public static void YV12ToI420(byte[] yv12, byte[] i420, int width, int height) {System.arraycopy(yv12, 0, i420, 0, width * height);int offset = width * height;for (int i = 0; i < width * height / 4; i++) {i420[offset + i] = yv12[offset + i + width * height / 4];i420[offset + i + width * height / 4] = yv12[offset + i];}
}

I420转YV12

public static void I420ToYV12(byte[] i420, byte[] yv12, int width, int height) {System.arraycopy(i420, 0, yv12, 0, width * height);int offset = width * height;for (int i = 0; i < width * height / 4; i++) {yv12[offset + i] = i420[offset + i + width * height / 4];yv12[offset + i + width * height / 4] = i420[offset + i];}
}

NV21/NV12/YV12转I420

public static void NV21ToI420(byte[] nv21, byte[] i420, int width, int height) {System.arraycopy(nv21, 0, i420, 0, width * height);int offset = width * height;for (int i = 0; i < width * height / 4; i++) {i420[offset + i] = nv21[offset + 2 * i + 1];i420[offset + i + width * height / 4] = nv21[offset + 2 * i];}
}public static void NV12ToI420(byte[] nv12, byte[] i420, int width, int height) {System.arraycopy(nv12, 0, i420, 0, width * height);int offset = width * height;for (int i = 0; i < width * height / 4; i++) {i420[offset + i] = nv12[offset + 2 * i + 1];i420[offset + i + width * height / 4] = nv12[offset + 2 * i];}
}public static void YV12ToI420(byte[] yv12, byte[] i420, int width, int height) {System.arraycopy(yv12, 0, i420, 0, width * height);int offset = width * height;for (int i = 0; i < width * height / 4; i++) {i420[offset + i] = yv12[offset + i];i420[offset + i + width * height / 4] = yv12[offset + i + width * height / 4];}
}public static void I420ToNV21(byte[] i420, byte[] nv21, int width, int height) {System.arraycopy(i420, 0, nv21, 0, width * height);int offset = width * height;for (int i = 0; i < width * height/4; i++) {nv21[offset + 2 * i] = i420[offset + i + width * height / 4];nv21[offset + 2 * i + 1] = i420[offset + i];}
}public static void I420ToNV12(byte[] i420, byte[] nv12, int width, int height) {System.arraycopy(i420, 0, nv12, 0, width * height);int offset = width * height;for (int i = 0; i < width * height / 4; i++) {nv12[offset + 2 * i] = i420[offset + i];nv12[offset + 2 * i + 1] = i420[offset + i + width * height / 4];}
}public static void I420ToYV12(byte[] i420, byte[] yv12, int width, int height) {System.arraycopy(i420, 0, yv12, 0, width * height);int offset = width * height;for (int i = 0; i < width * height / 4; i++) {yv12[offset + i] = i420[offset + i + width * height / 4];yv12[offset + i + width * height / 4] = i420[offset + i];}
}