Introduce a client minimum picture pool size

content/common/gpu/media/vaapi_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/vaapi_video_decode_accelerator.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
@@ skipping 633 matching lines @@
     const std::vector<media::PictureBuffer>& buffers) {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
   base::AutoLock auto_lock(lock_);
   DCHECK(pictures_.empty());
 
   while (!output_buffers_.empty())
     output_buffers_.pop();
 
   RETURN_AND_NOTIFY_ON_FAILURE(
-      buffers.size() == requested_num_pics_,
+      buffers.size() >= requested_num_pics_,
       "Got an invalid number of picture buffers. (Got " << buffers.size()
       << ", requested " << requested_num_pics_ << ")", INVALID_ARGUMENT, );
   DCHECK(requested_pic_size_ == buffers[0].size());
 
   std::vector<VASurfaceID> va_surface_ids;
   RETURN_AND_NOTIFY_ON_FAILURE(
       vaapi_wrapper_->CreateSurfaces(VA_RT_FORMAT_YUV420, requested_pic_size_,
                                      buffers.size(), &va_surface_ids),
       "Failed creating VA Surfaces", PLATFORM_FAILURE, );
   DCHECK_EQ(va_surface_ids.size(), buffers.size());
@@ skipping 846 matching lines @@
   return vaapi_pic->dec_surface();
 }
 
 // static
 media::VideoDecodeAccelerator::SupportedProfiles
 VaapiVideoDecodeAccelerator::GetSupportedProfiles() {
   return VaapiWrapper::GetSupportedDecodeProfiles();
 }
 
 }  // namespace content