下面列出了android.graphics.ImageFormat#NV21 ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public static byte[] createFromNV21(@NonNull final byte[] data,
final int width,
final int height,
int rotation,
final Rect croppingRect)
throws IOException
{
byte[] rotated = rotateNV21(data, width, height, rotation);
final int rotatedWidth = rotation % 180 > 0 ? height : width;
final int rotatedHeight = rotation % 180 > 0 ? width : height;
YuvImage previewImage = new YuvImage(rotated, ImageFormat.NV21,
rotatedWidth, rotatedHeight, null);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
previewImage.compressToJpeg(croppingRect, 80, outputStream);
byte[] bytes = outputStream.toByteArray();
outputStream.close();
return bytes;
}
@Override
public Mat rgba() {
if (mPreviewFormat == ImageFormat.NV21)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGBA_NV21, 4);
else if (mPreviewFormat == ImageFormat.YV12)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGB_I420, 4); // COLOR_YUV2RGBA_YV12 produces inverted colors
else if (mPreviewFormat == ImageFormat.YUV_420_888) {
assert (mUVFrameData != null);
Imgproc.cvtColorTwoPlane(mYuvFrameData, mUVFrameData, mRgba, Imgproc.COLOR_YUV2RGBA_NV21);
} else
throw new IllegalArgumentException("Preview Format can be NV21 or YV12");
return mRgba;
}
public static Bitmap ToBitmap(byte[] imageBytes, int format, int width, int height)
{
switch (format) {
case ImageFormat.NV21:
case ImageFormat.YUV_420_888:
return NV21ToBitmap(imageBytes, width, height);
}
return null;
}
@Override
public Mat rgba() {
if (mPreviewFormat == ImageFormat.NV21)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGBA_NV21, 4);
else if (mPreviewFormat == ImageFormat.YV12)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGB_I420, 4); // COLOR_YUV2RGBA_YV12 produces inverted colors
else
throw new IllegalArgumentException("Preview Format can be NV21 or YV12");
return mRgba;
}
/**
* 将byte[]转换成Bitmap
*
* @param bytes
* @param width
* @param height
* @return
*/
public static Bitmap getBitmapFromByte(byte[] bytes, int width, int height) {
final YuvImage image = new YuvImage(bytes, ImageFormat.NV21, width, height, null);
ByteArrayOutputStream os = new ByteArrayOutputStream(bytes.length);
if (!image.compressToJpeg(new Rect(0, 0, width, height), 100, os)) {
return null;
}
byte[] tmp = os.toByteArray();
Bitmap bmp = BitmapFactory.decodeByteArray(tmp, 0, tmp.length);
return bmp;
}
/**
* A factory method to build the appropriate LuminanceSource object based
* on the format of the preview buffers, as described by
* Camera.Parameters.
*
* @param data A preview frame.
* @param width The width of the image.
* @param height The height of the image.
* @return A PlanarYUVLuminanceSource instance.
*/
public PlanarYUVLuminanceSource buildLuminanceSource(byte[] data, int width, int height) {
Rect rect = getFramingRectInPreview();
int previewFormat = configManager.getPreviewFormat();
String previewFormatString = configManager.getPreviewFormatString();
switch (previewFormat) {
// This is the standard Android format which all devices are REQUIRED
// to support.
// In theory, it's the only one we should ever care about.
case ImageFormat.NV21:
// This format has never been seen in the wild, but is
// compatible as we only care
// about the Y channel, so allow it.
case ImageFormat.NV16:
return new PlanarYUVLuminanceSource(data, width, height, rect.left, rect.top, rect.width(),
rect.height());
default:
// The Samsung Moment incorrectly uses this variant instead of
// the 'sp' version.
// Fortunately, it too has all the Y data up front, so we can
// read it.
if ("yuv420p".equals(previewFormatString)) {
return new PlanarYUVLuminanceSource(data, width, height, rect.left, rect.top, rect.width(),
rect.height());
}
}
throw new IllegalArgumentException("Unsupported picture format: " + previewFormat + '/' + previewFormatString);
}
public static Bitmap convertYUV420sp2RGB(byte[] yuv, int width, int height) {
//YUV420sp转RGB数据 5-60ms
ByteArrayOutputStream out = new ByteArrayOutputStream();
YuvImage yuvImage = new YuvImage(yuv, ImageFormat.NV21, width, height, null);
yuvImage.compressToJpeg(new Rect(0, 0, width, height), 100, out);
byte[] imageBytes = out.toByteArray();
return BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length);
}
public ImageStream(int num, int dim, double sr)
{
super(num, dim, sr);
this.type = Cons.Type.IMAGE;
this.width = 0;
this.height = 0;
this.format = ImageFormat.NV21;
}
@Override
public Mat rgba() {
if (mPreviewFormat == ImageFormat.NV21)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGBA_NV21, 4);
else if (mPreviewFormat == ImageFormat.YV12)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGB_I420, 4); // COLOR_YUV2RGBA_YV12 produces inverted colors
else
throw new IllegalArgumentException("Preview Format can be NV21 or YV12");
return mRgba;
}
@NonNull
private Bitmap getExpectedBitmap(Nv21Image nv21Image) {
YuvImage yuvImage = new YuvImage(nv21Image.nv21ByteArray, ImageFormat.NV21, nv21Image.width,
nv21Image.height, null);
ByteArrayOutputStream os = new ByteArrayOutputStream();
yuvImage.compressToJpeg(new Rect(0, 0, nv21Image.width, nv21Image.height), 100, os);
byte[] jpegByteArray = os.toByteArray();
return BitmapFactory.decodeByteArray(jpegByteArray, 0, jpegByteArray.length);
}
static int getImageFormat() {
if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN) {
return ImageFormat.NV21;
}
for (String buggyDevice : sBUGGY_DEVICE_LIST) {
if (buggyDevice.contentEquals(android.os.Build.MODEL)) {
return ImageFormat.NV21;
}
}
return ImageFormat.YV12;
}
@Override
public Mat rgba() {
if (mPreviewFormat == ImageFormat.NV21)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGBA_NV21, 4);
else if (mPreviewFormat == ImageFormat.YV12)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGB_I420, 4); // COLOR_YUV2RGBA_YV12 produces inverted colors
else
throw new IllegalArgumentException("Preview Format can be NV21 or YV12");
return mRgba;
}
private String cameraFormatForPixelFormat(int pixel_format) {
switch(pixel_format) {
case ImageFormat.NV16: return PIXEL_FORMAT_YUV422SP;
case ImageFormat.NV21: return PIXEL_FORMAT_YUV420SP;
case ImageFormat.YUY2: return PIXEL_FORMAT_YUV422I;
case ImageFormat.YV12: return PIXEL_FORMAT_YUV420P;
case ImageFormat.RGB_565: return PIXEL_FORMAT_RGB565;
case ImageFormat.JPEG: return PIXEL_FORMAT_JPEG;
default: return null;
}
}
/**
* 対応する映像フォーマットをlogCatへ出力する
* @param params
*/
public static void dumpSupportedPictureFormats(@NonNull final Camera.Parameters params) {
final List<Integer> formats = params.getSupportedPictureFormats();
for (final int format: formats) {
switch (format) {
case ImageFormat.DEPTH16: Log.i(TAG, "supported: DEPTH16"); break;
case ImageFormat.DEPTH_POINT_CLOUD: Log.i(TAG, "supported: DEPTH_POINT_CLOUD"); break;
case ImageFormat.FLEX_RGBA_8888: Log.i(TAG, "supported: FLEX_RGBA_8888"); break;
case ImageFormat.FLEX_RGB_888: Log.i(TAG, "supported: FLEX_RGB_888"); break;
case ImageFormat.JPEG: Log.i(TAG, "supported: JPEG"); break;
case ImageFormat.NV16: Log.i(TAG, "supported: NV16"); break;
case ImageFormat.NV21: Log.i(TAG, "supported: NV21"); break;
case ImageFormat.PRIVATE: Log.i(TAG, "supported: PRIVATE"); break;
case ImageFormat.RAW10: Log.i(TAG, "supported: RAW10"); break;
case ImageFormat.RAW12: Log.i(TAG, "supported: RAW12"); break;
case ImageFormat.RAW_PRIVATE: Log.i(TAG, "supported: RAW_PRIVATE"); break;
case ImageFormat.RAW_SENSOR: Log.i(TAG, "supported: RAW_SENSOR"); break;
case ImageFormat.RGB_565: Log.i(TAG, "supported: RGB_565"); break;
case ImageFormat.UNKNOWN: Log.i(TAG, "supported: UNKNOWN"); break;
case ImageFormat.YUV_420_888: Log.i(TAG, "supported: YUV_420_888"); break;
case ImageFormat.YUV_422_888: Log.i(TAG, "supported: YUV_422_888"); break;
case ImageFormat.YUV_444_888: Log.i(TAG, "supported: YUV_444_888"); break;
case ImageFormat.YUY2: Log.i(TAG, "supported: YUY2"); break;
case ImageFormat.YV12: Log.i(TAG, "supported: YV12"); break;
default:
Log.i(TAG, String.format("supported: unknown, %08x", format));
break;
}
}
}
/**
* Constructs the H.263 stream.
* @param cameraId Can be either CameraInfo.CAMERA_FACING_BACK or CameraInfo.CAMERA_FACING_FRONT
* @throws IOException
*/
public H263Stream(int cameraId) {
super(cameraId);
mCameraImageFormat = ImageFormat.NV21;
mVideoEncoder = MediaRecorder.VideoEncoder.H263;
mPacketizer = new H263Packetizer();
}
/**
* Constructs the H.264 stream.
* @param cameraId Can be either CameraInfo.CAMERA_FACING_BACK or CameraInfo.CAMERA_FACING_FRONT
* @throws IOException
*/
public H264Stream(int cameraId) {
super(cameraId);
mMimeType = "video/avc";
mCameraImageFormat = ImageFormat.NV21;
mVideoEncoder = MediaRecorder.VideoEncoder.H264;
mPacketizer = new H264Packetizer();
}
private String formatToString(int format) {
switch (format) {
case ImageFormat.YV12:
return "YV12";
case ImageFormat.YUV_420_888:
return "YUV_420_888";
case ImageFormat.NV21:
return "NV21";
case ImageFormat.NV16:
return "NV16";
case PixelFormat.RGB_565:
return "RGB_565";
case PixelFormat.RGBA_8888:
return "RGBA_8888";
case PixelFormat.RGBX_8888:
return "RGBX_8888";
case PixelFormat.RGB_888:
return "RGB_888";
case ImageFormat.JPEG:
return "JPEG";
case ImageFormat.YUY2:
return "YUY2";
case ImageFormat.Y8:
return "Y8";
case ImageFormat.Y16:
return "Y16";
case ImageFormat.RAW_SENSOR:
return "RAW_SENSOR";
case ImageFormat.RAW_PRIVATE:
return "RAW_PRIVATE";
case ImageFormat.RAW10:
return "RAW10";
case ImageFormat.DEPTH16:
return "DEPTH16";
case ImageFormat.DEPTH_POINT_CLOUD:
return "DEPTH_POINT_CLOUD";
case ImageFormat.RAW_DEPTH:
return "RAW_DEPTH";
case ImageFormat.PRIVATE:
return "PRIVATE";
default:
return "UNKNOWN";
}
}
@SuppressLint("NewApi")
public static Bitmap NV21ToRGBABitmap(byte []nv21, int width, int height, Context context) {
TimingLogger timings = new TimingLogger(TIMING_LOG_TAG, "NV21ToRGBABitmap");
Rect rect = new Rect(0, 0, width, height);
try {
Class.forName("android.renderscript.Element$DataKind").getField("PIXEL_YUV");
Class.forName("android.renderscript.ScriptIntrinsicYuvToRGB");
byte[] imageData = nv21;
if (mRS == null) {
mRS = RenderScript.create(context);
mYuvToRgb = ScriptIntrinsicYuvToRGB.create(mRS, Element.U8_4(mRS));
Type.Builder tb = new Type.Builder(mRS, Element.createPixel(mRS, Element.DataType.UNSIGNED_8, Element.DataKind.PIXEL_YUV));
tb.setX(width);
tb.setY(height);
tb.setMipmaps(false);
tb.setYuvFormat(ImageFormat.NV21);
ain = Allocation.createTyped(mRS, tb.create(), Allocation.USAGE_SCRIPT);
timings.addSplit("Prepare for ain");
Type.Builder tb2 = new Type.Builder(mRS, Element.RGBA_8888(mRS));
tb2.setX(width);
tb2.setY(height);
tb2.setMipmaps(false);
aOut = Allocation.createTyped(mRS, tb2.create(), Allocation.USAGE_SCRIPT & Allocation.USAGE_SHARED);
timings.addSplit("Prepare for aOut");
bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
timings.addSplit("Create Bitmap");
}
ain.copyFrom(imageData);
timings.addSplit("ain copyFrom");
mYuvToRgb.setInput(ain);
timings.addSplit("setInput ain");
mYuvToRgb.forEach(aOut);
timings.addSplit("NV21 to ARGB forEach");
aOut.copyTo(bitmap);
timings.addSplit("Allocation to Bitmap");
} catch (Exception e) {
YuvImage yuvImage = new YuvImage(nv21, ImageFormat.NV21, width, height, null);
timings.addSplit("NV21 bytes to YuvImage");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
yuvImage.compressToJpeg(rect, 90, baos);
byte[] cur = baos.toByteArray();
timings.addSplit("YuvImage crop and compress to Jpeg Bytes");
bitmap = BitmapFactory.decodeByteArray(cur, 0, cur.length);
timings.addSplit("Jpeg Bytes to Bitmap");
}
timings.dumpToLog();
return bitmap;
}
@SuppressLint("NewApi")
public static Bitmap NV21ToRGBABitmap(byte []nv21, int width, int height, Context context) {
TimingLogger timings = new TimingLogger(TIMING_LOG_TAG, "NV21ToRGBABitmap");
Rect rect = new Rect(0, 0, width, height);
try {
Class.forName("android.renderscript.Element$DataKind").getField("PIXEL_YUV");
Class.forName("android.renderscript.ScriptIntrinsicYuvToRGB");
byte[] imageData = nv21;
if (mRS == null) {
mRS = RenderScript.create(context);
mYuvToRgb = ScriptIntrinsicYuvToRGB.create(mRS, Element.U8_4(mRS));
Type.Builder tb = new Type.Builder(mRS, Element
.createPixel(mRS, Element.DataType.UNSIGNED_8, Element.DataKind.PIXEL_YUV));
tb.setX(width);
tb.setY(height);
tb.setMipmaps(false);
tb.setYuvFormat(ImageFormat.NV21);
ain = Allocation.createTyped(mRS, tb.create(), Allocation.USAGE_SCRIPT);
timings.addSplit("Prepare for ain");
Type.Builder tb2 = new Type.Builder(mRS, Element.RGBA_8888(mRS));
tb2.setX(width);
tb2.setY(height);
tb2.setMipmaps(false);
aOut = Allocation
.createTyped(mRS, tb2.create(), Allocation.USAGE_SCRIPT & Allocation.USAGE_SHARED);
timings.addSplit("Prepare for aOut");
bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
timings.addSplit("Create Bitmap");
}
ain.copyFrom(imageData);
timings.addSplit("ain copyFrom");
mYuvToRgb.setInput(ain);
timings.addSplit("setInput ain");
mYuvToRgb.forEach(aOut);
timings.addSplit("NV21 to ARGB forEach");
aOut.copyTo(bitmap);
timings.addSplit("Allocation to Bitmap");
} catch (Exception e) {
YuvImage yuvImage = new YuvImage(nv21, ImageFormat.NV21, width, height, null);
timings.addSplit("NV21 bytes to YuvImage");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
yuvImage.compressToJpeg(rect, 90, baos);
byte[] cur = baos.toByteArray();
timings.addSplit("YuvImage crop and compress to Jpeg Bytes");
bitmap = BitmapFactory.decodeByteArray(cur, 0, cur.length);
timings.addSplit("Jpeg Bytes to Bitmap");
}
timings.dumpToLog();
return bitmap;
}
/**
* Check if a given surface uses {@link ImageFormat#YUV_420_888} or format that can be readily
* converted to this; YV12 and NV21 are the two currently supported formats.
*
* @param s the surface to check.
* @return {@code true} if the surfaces uses {@link ImageFormat#YUV_420_888} or a compatible
* format.
*/
static boolean needsConversion(Surface s) throws BufferQueueAbandonedException {
int nativeType = detectSurfaceType(s);
return nativeType == ImageFormat.YUV_420_888 || nativeType == ImageFormat.YV12 ||
nativeType == ImageFormat.NV21;
}