gpu: Make GPU command decoder know right format of a GPU video texture in Win.

content/common/gpu/media/gpu_video_decode_accelerator.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 "content/common/gpu/media/gpu_video_decode_accelerator.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 377 matching lines @@
     } else {
       // For other targets, texture dimensions should already be defined.
       GLsizei width = 0, height = 0;
       info->GetLevelSize(texture_target_, 0, &width, &height);
       if (width != texture_dimensions_.width() ||
           height != texture_dimensions_.height()) {
         DLOG(ERROR) << "Size mismatch for texture id " << texture_ids[i];
         NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
         return;
       }
+
+      // FIXME: after moving to D3D11, remove this workaround. crbug.com/438691

[scherkus (not reviewing), 2014/12/08 22:51:36]

nit: chromium typically uses the TODO(username):

would you mind updating this?

[dshwang, 2014/12/09 09:36:02]

Done. Yes, of course :)

+      GLenum format =
+          video_decode_accelerator_.get()->GetSurfaceInternalFormat();
+      if (format != GL_RGBA) {
+        texture_manager->SetLevelInfo(texture_ref, texture_target_, 0, format,
+                                      width, height, 1, 0, format, 0, false);
+      }
     }
     uint32 service_texture_id;
     if (!command_decoder->GetServiceTextureId(
             texture_ids[i], &service_texture_id)) {
       DLOG(ERROR) << "Failed to translate texture!";
       NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
       return;
     }
     buffers.push_back(media::PictureBuffer(
         buffer_ids[i], texture_dimensions_, service_texture_id));
@@ skipping 98 matching lines @@
   return stub_->channel()->Send(message);
 }
 
 void GpuVideoDecodeAccelerator::SendCreateDecoderReply(IPC::Message* message,
                                                        bool succeeded) {
   GpuCommandBufferMsg_CreateVideoDecoder::WriteReplyParams(message, succeeded);
   Send(message);
 }
 
 }  // namespace content