Buffer returned textures from render to VDA

content/common/gpu/media/exynos_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 <dlfcn.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/videodev2.h>
 #include <poll.h>
 #include <sys/eventfd.h>
@@ skipping 1267 matching lines @@
       return;
     // Start VIDIOC_STREAMON if we haven't yet.
     if (!gsc_input_streamon_) {
       __u32 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
       IOCTL_OR_ERROR_RETURN(gsc_fd_, VIDIOC_STREAMON, &type);
       gsc_input_streamon_ = true;
     }
   }
 
   // Enqueue a GSC output, only if we need one
+  // TODO(ihf): Revert to size > 0 once issue 225563 is fixed.
   if (gsc_input_buffer_queued_count_ != 0 &&
       gsc_output_buffer_queued_count_ == 0 &&
-      !gsc_free_output_buffers_.empty()) {
+      gsc_free_output_buffers_.size() > 2) {
     const int old_gsc_outputs_queued = gsc_output_buffer_queued_count_;
     if (!EnqueueGscOutputRecord())
       return;
     if (old_gsc_outputs_queued == 0 && gsc_output_buffer_queued_count_ != 0) {
       // We just started up a previously empty queue.
       // Queue state changed; signal interrupt.
       if (!SetDevicePollInterrupt())
         return;
       // Start VIDIOC_STREAMON if we haven't yet.
       if (!gsc_output_streamon_) {
@@ skipping 910 matching lines @@
   reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
   reqbufs.memory = V4L2_MEMORY_DMABUF;
   if (ioctl(gsc_fd_, VIDIOC_REQBUFS, &reqbufs) != 0)
     DPLOG(ERROR) << "DestroyGscOutputBuffers(): ioctl() failed: VIDIOC_REQBUFS";
 
   gsc_output_buffer_map_.clear();
   gsc_free_output_buffers_.clear();
 }
 
 }  // namespace content