media: Let VideoFrame carry more than one native texture.

media/blink/skcanvas_video_renderer.cc

 // Copyright (c) 2012 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/blink/skcanvas_video_renderer.h"
 
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/command_buffer/common/mailbox_holder.h"
 #include "media/base/video_frame.h"
@@ skipping 589 matching lines @@
 // static
 void SkCanvasVideoRenderer::CopyVideoFrameTextureToGLTexture(
     gpu::gles2::GLES2Interface* gl,
     VideoFrame* video_frame,
     unsigned int texture,
     unsigned int internal_format,
     unsigned int type,
     bool premultiply_alpha,
     bool flip_y) {
   DCHECK(video_frame && video_frame->format() == VideoFrame::NATIVE_TEXTURE);
-  const gpu::MailboxHolder* mailbox_holder = video_frame->mailbox_holder();
-  DCHECK(mailbox_holder->texture_target == GL_TEXTURE_2D ||
-         mailbox_holder->texture_target == GL_TEXTURE_RECTANGLE_ARB ||
-         mailbox_holder->texture_target == GL_TEXTURE_EXTERNAL_OES);
+  DCHECK_EQ(1u, VideoFrame::NumTextures(video_frame->texture_format()));
+  const gpu::MailboxHolder& mailbox_holder = video_frame->mailbox_holder(0);
+  DCHECK(mailbox_holder.texture_target == GL_TEXTURE_2D ||
+         mailbox_holder.texture_target == GL_TEXTURE_RECTANGLE_ARB ||
+         mailbox_holder.texture_target == GL_TEXTURE_EXTERNAL_OES);
 
-  gl->WaitSyncPointCHROMIUM(mailbox_holder->sync_point);
+  gl->WaitSyncPointCHROMIUM(mailbox_holder.sync_point);
   uint32 source_texture = gl->CreateAndConsumeTextureCHROMIUM(
-      mailbox_holder->texture_target, mailbox_holder->mailbox.name);
+      mailbox_holder.texture_target, mailbox_holder.mailbox.name);
 
   // The video is stored in a unmultiplied format, so premultiply
   // if necessary.
   gl->PixelStorei(GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM, premultiply_alpha);
   // Application itself needs to take care of setting the right |flip_y|
   // value down to get the expected result.
   // "flip_y == true" means to reverse the video orientation while
   // "flip_y == false" means to keep the intrinsic orientation.
   gl->PixelStorei(GL_UNPACK_FLIP_Y_CHROMIUM, flip_y);
   gl->CopyTextureCHROMIUM(GL_TEXTURE_2D, source_texture, texture,
@@ skipping 13 matching lines @@
   last_frame_timestamp_ = media::kNoTimestamp();
 }
 
 void SkCanvasVideoRenderer::ResetAcceleratedLastFrame() {
   accelerated_last_frame_.reset();
   accelerated_generator_ = nullptr;
   accelerated_last_frame_timestamp_ = media::kNoTimestamp();
 }
 
 }  // namespace media