private Bitmap captureBitmap(I420Frame i420Frame)
{
YuvImage yuvImage = i420ToYuvImage(i420Frame);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Rect rect = new Rect(0, 0, yuvImage.Width, yuvImage.Height);
// Compress YuvImage to jpeg
yuvImage.compressToJpeg(rect, 100, stream);
// Convert jpeg to Bitmap
sbyte[] imageBytes = stream.toByteArray();
Bitmap bitmap = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.Length);
Matrix matrix = new Matrix();
// Apply any needed rotation
matrix.postRotate(i420Frame.rotationDegree);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.Width, bitmap.Height, matrix, true);
return bitmap;
}
private Bitmap captureBitmap(I420Frame i420Frame)
{
YuvImage yuvImage = i420ToYuvImage(i420Frame);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Rect rect = new Rect(0, 0, yuvImage.Width, yuvImage.Height);
// Compress YuvImage to jpeg
yuvImage.compressToJpeg(rect, 100, stream);
// Convert jpeg to Bitmap
sbyte[] imageBytes = stream.toByteArray();
Bitmap bitmap = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.Length);
Matrix matrix = new Matrix();
// Apply any needed rotation
matrix.postRotate(i420Frame.rotationDegree);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.Width, bitmap.Height, matrix, true);
return(bitmap);
}
private YuvImage i420ToYuvImage(I420Frame i420Frame)
{
if (i420Frame.yuvStrides[0] != i420Frame.width)
{
return(fastI420ToYuvImage(i420Frame));
}
if (i420Frame.yuvStrides[1] != i420Frame.width / 2)
{
return(fastI420ToYuvImage(i420Frame));
}
if (i420Frame.yuvStrides[2] != i420Frame.width / 2)
{
return(fastI420ToYuvImage(i420Frame));
}
sbyte[] bytes = new sbyte[i420Frame.yuvStrides[0] * i420Frame.height + i420Frame.yuvStrides[1] * i420Frame.height / 2 + i420Frame.yuvStrides[2] * i420Frame.height / 2];
ByteBuffer tmp = ByteBuffer.wrap(bytes, 0, i420Frame.width * i420Frame.height);
copyPlane(i420Frame.yuvPlanes[0], tmp);
sbyte[] tmpBytes = new sbyte[i420Frame.width / 2 * i420Frame.height / 2];
tmp = ByteBuffer.wrap(tmpBytes, 0, i420Frame.width / 2 * i420Frame.height / 2);
copyPlane(i420Frame.yuvPlanes[2], tmp);
for (int row = 0; row < i420Frame.height / 2; row++)
{
for (int col = 0; col < i420Frame.width / 2; col++)
{
bytes[i420Frame.width * i420Frame.height + row * i420Frame.width + col * 2] = tmpBytes[row * i420Frame.width / 2 + col];
}
}
copyPlane(i420Frame.yuvPlanes[1], tmp);
for (int row = 0; row < i420Frame.height / 2; row++)
{
for (int col = 0; col < i420Frame.width / 2; col++)
{
bytes[i420Frame.width * i420Frame.height + row * i420Frame.width + col * 2 + 1] = tmpBytes[row * i420Frame.width / 2 + col];
}
}
return(new YuvImage(bytes, NV21, i420Frame.width, i420Frame.height, null));
}
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: @Override public void renderFrame(final com.twilio.video.I420Frame i420Frame)
public override void renderFrame(I420Frame i420Frame)
{
// Capture bitmap and post to main thread
if (snapshotRequsted.compareAndSet(true, false))
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final android.graphics.Bitmap bitmap = captureBitmap(i420Frame);
Bitmap bitmap = captureBitmap(i420Frame);
handler.post(() =>
{
// Update the bitmap of image view
imageView.ImageBitmap = bitmap;
// Frames must be released after rendering to free the native memory
i420Frame.release();
});
}
else
{
i420Frame.release();
}
}
private YuvImage fastI420ToYuvImage(I420Frame i420Frame)
{
sbyte[] bytes = new sbyte[i420Frame.width * i420Frame.height * 3 / 2];
int i = 0;
for (int row = 0; row < i420Frame.height; row++)
{
for (int col = 0; col < i420Frame.width; col++)
{
bytes[i++] = i420Frame.yuvPlanes[0].get(col + row * i420Frame.yuvStrides[0]);
}
}
for (int row = 0; row < i420Frame.height / 2; row++)
{
for (int col = 0; col < i420Frame.width / 2; col++)
{
bytes[i++] = i420Frame.yuvPlanes[2].get(col + row * i420Frame.yuvStrides[2]);
bytes[i++] = i420Frame.yuvPlanes[1].get(col + row * i420Frame.yuvStrides[1]);
}
}
return(new YuvImage(bytes, NV21, i420Frame.width, i420Frame.height, null));
}
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: @Override public void renderFrame(final com.twilio.video.I420Frame i420Frame)
public override void renderFrame(I420Frame i420Frame)
{
// Capture bitmap and post to main thread
if (snapshotRequsted.compareAndSet(true, false))
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final android.graphics.Bitmap bitmap = captureBitmap(i420Frame);
Bitmap bitmap = captureBitmap(i420Frame);
handler.post(() =>
{
// Update the bitmap of image view
imageView.ImageBitmap = bitmap;
// Frames must be released after rendering to free the native memory
i420Frame.release();
});
}
else
{
i420Frame.release();
}
}
private YuvImage i420ToYuvImage(I420Frame i420Frame)
{
if (i420Frame.yuvStrides[0] != i420Frame.width)
{
return fastI420ToYuvImage(i420Frame);
}
if (i420Frame.yuvStrides[1] != i420Frame.width / 2)
{
return fastI420ToYuvImage(i420Frame);
}
if (i420Frame.yuvStrides[2] != i420Frame.width / 2)
{
return fastI420ToYuvImage(i420Frame);
}
sbyte[] bytes = new sbyte[i420Frame.yuvStrides[0] * i420Frame.height + i420Frame.yuvStrides[1] * i420Frame.height / 2 + i420Frame.yuvStrides[2] * i420Frame.height / 2];
ByteBuffer tmp = ByteBuffer.wrap(bytes, 0, i420Frame.width * i420Frame.height);
copyPlane(i420Frame.yuvPlanes[0], tmp);
sbyte[] tmpBytes = new sbyte[i420Frame.width / 2 * i420Frame.height / 2];
tmp = ByteBuffer.wrap(tmpBytes, 0, i420Frame.width / 2 * i420Frame.height / 2);
copyPlane(i420Frame.yuvPlanes[2], tmp);
for (int row = 0 ; row < i420Frame.height / 2 ; row++)
{
for (int col = 0 ; col < i420Frame.width / 2 ; col++)
{
bytes[i420Frame.width * i420Frame.height + row * i420Frame.width + col * 2] = tmpBytes[row * i420Frame.width / 2 + col];
}
}
copyPlane(i420Frame.yuvPlanes[1], tmp);
for (int row = 0 ; row < i420Frame.height / 2 ; row++)
{
for (int col = 0 ; col < i420Frame.width / 2 ; col++)
{
bytes[i420Frame.width * i420Frame.height + row * i420Frame.width + col * 2 + 1] = tmpBytes[row * i420Frame.width / 2 + col];
}
}
return new YuvImage(bytes, NV21, i420Frame.width, i420Frame.height, null);
}
private YuvImage fastI420ToYuvImage(I420Frame i420Frame)
{
sbyte[] bytes = new sbyte[i420Frame.width * i420Frame.height * 3 / 2];
int i = 0;
for (int row = 0 ; row < i420Frame.height ; row++)
{
for (int col = 0 ; col < i420Frame.width ; col++)
{
bytes[i++] = i420Frame.yuvPlanes[0].get(col + row * i420Frame.yuvStrides[0]);
}
}
for (int row = 0 ; row < i420Frame.height / 2 ; row++)
{
for (int col = 0 ; col < i420Frame.width / 2; col++)
{
bytes[i++] = i420Frame.yuvPlanes[2].get(col + row * i420Frame.yuvStrides[2]);
bytes[i++] = i420Frame.yuvPlanes[1].get(col + row * i420Frame.yuvStrides[1]);
}
}
return new YuvImage(bytes, NV21, i420Frame.width, i420Frame.height, null);
}
