Introduce a client minimum picture pool size

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 125 matching lines @@
   START_OF_STREAM_RESET = -3,
   MID_STREAM_RESET = -2,
   END_OF_STREAM_RESET = -1
 };
 
 const int kMaxResetAfterFrameNum = 100;
 const int kMaxFramesToDelayReuse = 64;
 const base::TimeDelta kReuseDelay = base::TimeDelta::FromSeconds(1);
 // Simulate WebRTC and call VDA::Decode 30 times per second.
 const int kWebRtcDecodeCallsPerSecond = 30;
+// Simulate an adjustment to a larger number of pictures to make sure the
+// decoder supports an upwards adjustment.
+const int kExtraPictureBuffers = 2;
 
 struct TestVideoFile {
   explicit TestVideoFile(base::FilePath::StringType file_name)
       : file_name(file_name),
         width(-1),
         height(-1),
         num_frames(-1),
         num_fragments(-1),
         min_fps_render(-1),
         min_fps_no_render(-1),
@@ skipping 452 matching lines @@
 }
 
 void GLRenderingVDAClient::ProvidePictureBuffers(
     uint32 requested_num_of_buffers,
     const gfx::Size& dimensions,
     uint32 texture_target) {
   if (decoder_deleted())
     return;
   std::vector<media::PictureBuffer> buffers;
 
+  requested_num_of_buffers += kExtraPictureBuffers;
+
   texture_target_ = texture_target;
   for (uint32 i = 0; i < requested_num_of_buffers; ++i) {
     uint32 texture_id;
     base::WaitableEvent done(false, false);
     rendering_helper_->CreateTexture(
         texture_target_, &texture_id, dimensions, &done);
     done.Wait();
 
     int32 picture_buffer_id = next_picture_buffer_id_++;
     CHECK(active_textures_
@@ skipping 1014 matching lines @@
   content::VaapiWrapper::PreSandboxInitialization();
 #endif
 
   content::g_env =
       reinterpret_cast<content::VideoDecodeAcceleratorTestEnvironment*>(
           testing::AddGlobalTestEnvironment(
               new content::VideoDecodeAcceleratorTestEnvironment()));
 
   return RUN_ALL_TESTS();
 }