Send bytes_used of v4l2 captured frame when video capture

media/video/capture/linux/v4l2_capture_delegate_multi_plane.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/video/capture/linux/v4l2_capture_delegate_multi_plane.h"
 
 #include <sys/mman.h>
 
 namespace media {
 
@@ skipping 37 matching lines @@
 void V4L2CaptureDelegateMultiPlane::FinishFillingV4L2Buffer(
     v4l2_buffer* buffer) const {
   buffer->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
   buffer->length = v4l2_planes_.size();
 
   static const struct v4l2_plane empty_plane = {};
   std::fill(v4l2_planes_.begin(), v4l2_planes_.end(), empty_plane);
   buffer->m.planes = v4l2_planes_.data();
 }
 
+void V4L2CaptureDelegateMultiPlane::FetchBytesUsed(

[wuchengli, 2015/05/25 07:22:19]

s/FetchBytesUsed/SetBytesUsed/. The direction should be the other way around.

[kcwu, 2015/05/25 07:36:25]

Changed to SetPayloadSize per offline discussion.

+    const scoped_refptr<BufferTracker>& buffer_tracker,
+    const v4l2_buffer* buffer) const {

[wuchengli, 2015/05/25 07:22:19]

Use const reference. This is input.

[kcwu, 2015/05/25 07:36:25]

Done.

+  for (size_t i = 0; i < v4l2_planes_.size(); i++)
+    buffer_tracker->SetPlanePayload(i, buffer->m.planes[i].bytesused);

[wuchengli, 2015/05/25 07:22:19]

s/SetPlanePayload/SetPlanePayloadSize/. Payload usually refers to the data
array.

[kcwu, 2015/05/25 07:36:25]

Done.

+}
+
 void V4L2CaptureDelegateMultiPlane::SendBuffer(
     const scoped_refptr<BufferTracker>& buffer_tracker,
     const v4l2_format& format) const {
   DCHECK_EQ(capture_format().pixel_format, PIXEL_FORMAT_I420);
   const size_t y_stride = format.fmt.pix_mp.plane_fmt[0].bytesperline;
   const size_t u_stride = format.fmt.pix_mp.plane_fmt[1].bytesperline;
   const size_t v_stride = format.fmt.pix_mp.plane_fmt[2].bytesperline;
   DCHECK_GE(y_stride, 1u * capture_format().frame_size.width());
   DCHECK_GE(u_stride, 1u * capture_format().frame_size.width() / 2);
   DCHECK_GE(v_stride, 1u * capture_format().frame_size.width() / 2);
@@ skipping 22 matching lines @@
       return false;
     }
     AddMmapedPlane(static_cast<uint8_t*>(start), buffer.m.planes[p].length);
     DVLOG(3) << "Mmap()ed plane #" << p << " of " << buffer.m.planes[p].length
              << "B";
   }
   return true;
 }
 
 }  // namespace media