ImageCapture: Implement takePhoto() for Windows

media/capture/video/linux/v4l2_capture_delegate.cc

Index: media/capture/video/linux/v4l2_capture_delegate.cc
diff --git a/media/capture/video/linux/v4l2_capture_delegate.cc b/media/capture/video/linux/v4l2_capture_delegate.cc
index ddc69dc7ba1c91fc4ec5cd8d47851cbd1e382284..d846e416b5153c3b0ffa8d326b8ac83d49b5b0bc 100644
--- a/media/capture/video/linux/v4l2_capture_delegate.cc
+++ b/media/capture/video/linux/v4l2_capture_delegate.cc
@@ -16,10 +16,8 @@
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "media/base/bind_to_current_loop.h"
+#include "media/capture/video/blob_utils.h"
 #include "media/capture/video/linux/video_capture_device_linux.h"
-#include "third_party/libyuv/include/libyuv.h"
-#include "third_party/skia/include/core/SkImage.h"
-#include "ui/gfx/codec/png_codec.h"
 
 namespace media {
 
@@ -415,7 +413,8 @@ void V4L2CaptureDelegate::DoCapture() {
           std::move(take_photo_callbacks_.front());
       take_photo_callbacks_.pop();
 
-      mojom::BlobPtr blob = GetPhotoBlob(buffer_tracker, buffer.bytesused);
+      mojom::BlobPtr blob =
+          Blobify(buffer_tracker->start(), buffer.bytesused, capture_format_);
       if (blob)
         cb.Run(std::move(blob));
     }
@@ -430,59 +429,6 @@ void V4L2CaptureDelegate::DoCapture() {
       FROM_HERE, base::Bind(&V4L2CaptureDelegate::DoCapture, this));
 }
 
-mojom::BlobPtr V4L2CaptureDelegate::GetPhotoBlob(
-    const scoped_refptr<BufferTracker>& buffer_tracker,
-    const uint32_t bytesused) {
-  uint32 src_format;
-
-  if (capture_format_.pixel_format == VideoPixelFormat::PIXEL_FORMAT_MJPEG) {
-    mojom::BlobPtr blob = mojom::Blob::New();
-    blob->data.resize(bytesused);
-    memcpy(blob->data.data(), buffer_tracker->start(), bytesused);
-    blob->mime_type = "image/jpeg";
-    return blob;
-  } else if (capture_format_.pixel_format ==
-             VideoPixelFormat::PIXEL_FORMAT_UYVY) {
-    src_format = libyuv::FOURCC_UYVY;
-  } else if (capture_format_.pixel_format ==
-             VideoPixelFormat::PIXEL_FORMAT_YUY2) {
-    src_format = libyuv::FOURCC_YUY2;
-  } else if (capture_format_.pixel_format ==
-             VideoPixelFormat::PIXEL_FORMAT_I420) {
-    src_format = libyuv::FOURCC_I420;
-  } else if (capture_format_.pixel_format ==
-             VideoPixelFormat::PIXEL_FORMAT_RGB24) {
-    src_format = libyuv::FOURCC_24BG;
-  } else {
-    return nullptr;
-  }
-
-  std::unique_ptr<uint8_t[]> dst_argb(new uint8_t[VideoFrame::AllocationSize(
-      PIXEL_FORMAT_ARGB, capture_format_.frame_size)]);
-  if (ConvertToARGB(buffer_tracker->start(), bytesused, dst_argb.get(),
-                    capture_format_.frame_size.width() * 4, 0 /* crop_x_pos */,
-                    0 /* crop_y_pos */, capture_format_.frame_size.width(),
-                    capture_format_.frame_size.height(),
-                    capture_format_.frame_size.width(),
-                    capture_format_.frame_size.height(),
-                    libyuv::RotationMode::kRotate0, src_format) != 0) {
-    return nullptr;
-  }
-
-  mojom::BlobPtr blob = mojom::Blob::New();
-  const gfx::PNGCodec::ColorFormat codec_color_format =
-      (kN32_SkColorType == kRGBA_8888_SkColorType) ? gfx::PNGCodec::FORMAT_RGBA
-                                                   : gfx::PNGCodec::FORMAT_BGRA;
-  const bool result = gfx::PNGCodec::Encode(
-      dst_argb.get(), codec_color_format, capture_format_.frame_size,
-      capture_format_.frame_size.width() * 4, true /* discard_transparency */,
-      std::vector<gfx::PNGCodec::Comment>(), &blob->data);
-  DCHECK(result);
-
-  blob->mime_type = "image/png";
-  return blob;
-}
-
 void V4L2CaptureDelegate::SetErrorState(
     const tracked_objects::Location& from_here,
     const std::string& reason) {