Add I420Buffer::Copy method taking plane pointers as input.

webrtc/common_video/video_frame_buffer.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #include "webrtc/common_video/include/video_frame_buffer.h"
@@ skipping 43 matching lines @@
   RTC_DCHECK_GT(width, 0);
   RTC_DCHECK_GT(height, 0);
   RTC_DCHECK_GE(stride_y, width);
   RTC_DCHECK_GE(stride_u, (width + 1) / 2);
   RTC_DCHECK_GE(stride_v, (width + 1) / 2);
 }
 
 I420Buffer::~I420Buffer() {
 }
 
+// static
 rtc::scoped_refptr<I420Buffer> I420Buffer::Create(int width, int height) {
   return new rtc::RefCountedObject<I420Buffer>(width, height);
 }
 
+// static
 rtc::scoped_refptr<I420Buffer> I420Buffer::Create(int width,
                                                   int height,
                                                   int stride_y,
                                                   int stride_u,
                                                   int stride_v) {
   return new rtc::RefCountedObject<I420Buffer>(
       width, height, stride_y, stride_u, stride_v);
 }
 
 void I420Buffer::InitializeData() {
@@ skipping 43 matching lines @@
   return nullptr;
 }
 
 rtc::scoped_refptr<VideoFrameBuffer> I420Buffer::NativeToI420Buffer() {
   RTC_NOTREACHED();
   return nullptr;
 }
 
 // static
 rtc::scoped_refptr<I420Buffer> I420Buffer::Copy(
+      int width, int height,
+      const uint8_t* data_y, int stride_y,
+      const uint8_t* data_u, int stride_u,
+      const uint8_t* data_v, int stride_v) {
+  // Note: May use different strides than the input data.
+  rtc::scoped_refptr<I420Buffer> buffer = Create(width, height);
+  RTC_CHECK(libyuv::I420Copy(data_y, stride_y,

[magjed_webrtc, 2016/11/28 08:39:56]

RTC_CHECK_EQ(0, ...)

[nisse-webrtc, 2016/11/28 09:44:54]

Done.

+                             data_u, stride_u,
+                             data_v, stride_v,
+                             buffer->MutableDataY(), buffer->StrideY(),
+                             buffer->MutableDataU(), buffer->StrideU(),
+                             buffer->MutableDataV(), buffer->StrideV(),
+                             width, height)
+            == 0);
+  return buffer;
+}
+
+// static
+rtc::scoped_refptr<I420Buffer> I420Buffer::Copy(
     const VideoFrameBuffer& source) {
-  int width = source.width();
-  int height = source.height();
-  rtc::scoped_refptr<I420Buffer> target = I420Buffer::Create(width, height);
-  RTC_CHECK(libyuv::I420Copy(source.DataY(), source.StrideY(),
-                             source.DataU(), source.StrideU(),
-                             source.DataV(), source.StrideV(),
-                             target->MutableDataY(), target->StrideY(),
-                             target->MutableDataU(), target->StrideU(),
-                             target->MutableDataV(), target->StrideV(),
-                             width, height) == 0);
-
-  return target;
+  return Copy(source.width(), source.height(),
+              source.DataY(), source.StrideY(),
+              source.DataU(), source.StrideU(),
+              source.DataV(), source.StrideV());
 }
 
 void I420Buffer::SetToBlack() {
   RTC_CHECK(libyuv::I420Rect(MutableDataY(), StrideY(),
                              MutableDataU(), StrideU(),
                              MutableDataV(), StrideV(),
                              0, 0, width(), height(),
                              0, 128, 128) == 0);
 }
 
@@ skipping 188 matching lines @@
 void* WrappedI420Buffer::native_handle() const {
   return nullptr;
 }
 
 rtc::scoped_refptr<VideoFrameBuffer> WrappedI420Buffer::NativeToI420Buffer() {
   RTC_NOTREACHED();
   return nullptr;
 }
 
 }  // namespace webrtc