exo: advertise supported formats to linux_dmabuf clients

components/exo/wayland/clients/rects.cc

 // Copyright 2016 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.
 
 // Implementation of a client that produces output in the form of RGBA
 // buffers when receiving pointer/touch events. RGB contains the lower
 // 24 bits of the event timestamp and A is 0xff.
 
 #include <linux-dmabuf-unstable-v1-client-protocol.h>
 #include <presentation-time-client-protocol.h>
@@ skipping 199 matching lines @@
  public:
   RectsClient() {}
 
   // Initialize and run client main loop.
   int Run(const ClientBase::InitParams& params,
           size_t max_frames_pending,
           size_t num_rects,
           size_t num_benchmark_runs,
           base::TimeDelta benchmark_interval,
           bool show_fps_counter);
+  static void AddDmaBufFormat(uint32_t format);
 
  private:
+  static std::vector<uint32_t> dmabuf_formats_;
   DISALLOW_COPY_AND_ASSIGN(RectsClient);
 };
 
+std::vector<uint32_t> RectsClient::dmabuf_formats_ = std::vector<uint32_t>();
+
+void RectsClient::AddDmaBufFormat(uint32_t format) {
+  dmabuf_formats_.push_back(format);
+}
+
+void LinuxDmaBufFormatReceived(void* data,
+                               struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf,
+                               uint32_t format) {
+  RectsClient::AddDmaBufFormat(format);
+}
+
 int RectsClient::Run(const ClientBase::InitParams& params,
                      size_t max_frames_pending,
                      size_t num_rects,
                      size_t num_benchmark_runs,
                      base::TimeDelta benchmark_interval,
                      bool show_fps_counter) {
   if (!ClientBase::Init(params))
     return 1;
 
   EventTimeStack event_times;
@@ skipping 278 matching lines @@
 
   size_t benchmark_interval_ms = 5000;  // 5 seconds.
   if (command_line->HasSwitch(switches::kBenchmarkInterval) &&
       (!base::StringToSizeT(
           command_line->GetSwitchValueASCII(switches::kBenchmarkInterval),
           &benchmark_interval_ms))) {
     LOG(ERROR) << "Invalid value for " << switches::kBenchmarkInterval;
     return 1;
   }
 
+  params.dmabuf_listener = {exo::wayland::clients::LinuxDmaBufFormatReceived};
   exo::wayland::clients::RectsClient client;
   return client.Run(params, max_frames_pending, num_rects, num_benchmark_runs,
                     base::TimeDelta::FromMilliseconds(benchmark_interval_ms),
                     command_line->HasSwitch(switches::kShowFpsCounter));
 }