rendering_helper - Wait for rendering before resetting the decoder.

content/common/gpu/media/video_decode_accelerator_unittest.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.
 //
 // The bulk of this file is support code; sorry about that.  Here's an overview
 // to hopefully help readers of this code:
 // - RenderingHelper is charged with interacting with X11/{EGL/GLES2,GLX/GL} or
 //   Win/EGL.
 // - ClientState is an enum for the state of the decode client used by the test.
 // - ClientStateNotification is a barrier abstraction that allows the test code
@@ skipping 248 matching lines @@
  private:
   typedef std::map<int, media::PictureBuffer*> PictureBufferById;
 
   void SetState(ClientState new_state);
   void FinishInitialization();
   void ReturnPicture(int32 picture_buffer_id);
 
   // Delete the associated decoder helper.
   void DeleteDecoder();
 
+  void ResetDecoder();
+
   // Compute & return the first encoded bytes (including a start frame) to send
   // to the decoder, starting at |start_pos| and returning one fragment. Skips
   // to the first decodable position.
   std::string GetBytesForFirstFragment(size_t start_pos, size_t* end_pos);
   // Compute & return the encoded bytes of next fragment to send to the decoder
   // (based on |start_pos|).
   std::string GetBytesForNextFragment(size_t start_pos, size_t* end_pos);
   // Helpers for GetBytesForNextFragment above.
   void GetBytesForNextNALU(size_t start_pos, size_t* end_pos);  // For h.264.
   std::string GetBytesForNextFrame(
@@ skipping 247 matching lines @@
   // TODO(fischman): this test currently relies on this notification to make
   // forward progress during a Reset().  But the VDA::Reset() API doesn't
   // guarantee this, so stop relying on it (and remove the notifications from
   // VaapiVideoDecodeAccelerator::FinishReset()).
   ++num_done_bitstream_buffers_;
   --outstanding_decodes_;
   if (decode_calls_per_second_ == 0)
     DecodeNextFragment();
 }
 
+void GLRenderingVDAClient::ResetDecoder() {
+  if (decoder_deleted())
+    return;
+  decoder_->Reset();
+  SetState(CS_RESETTING);
+}
+
 void GLRenderingVDAClient::NotifyFlushDone() {
   if (decoder_deleted())
     return;
 
   SetState(CS_FLUSHED);
   --remaining_play_throughs_;
   DCHECK_GE(remaining_play_throughs_, 0);
-  if (decoder_deleted())
-    return;
-  decoder_->Reset();
-  SetState(CS_RESETTING);
+
+  // Call Reset until rendering is completed.
+  rendering_helper_->SetWaitRenderingCB(
+      window_id_, base::Bind(&GLRenderingVDAClient::ResetDecoder, AsWeakPtr()));
 }
 
 void GLRenderingVDAClient::NotifyResetDone() {
   if (decoder_deleted())
     return;
 
   rendering_helper_->ClearVideoFrames(window_id_);
 
   if (reset_after_frame_num_ == MID_STREAM_RESET) {
     reset_after_frame_num_ = END_OF_STREAM_RESET;
@@ skipping 857 matching lines @@
     if (it->first == "v" || it->first == "vmodule")
       continue;
     LOG(FATAL) << "Unexpected switch: " << it->first << ":" << it->second;
   }
 
   base::ShadowingAtExitManager at_exit_manager;
   content::RenderingHelper::InitializeOneOff();
 
   return RUN_ALL_TESTS();
 }