1 files changed, 113 insertions, 0 deletions
diff --git a/webkit/glue/plugins/pepper_audio.h b/webkit/glue/plugins/pepper_audio.h
new file mode 100644
index 0000000..d9a9e86
--- /dev/null
+++ b/webkit/glue/plugins/pepper_audio.h
@@ -0,0 +1,113 @@
+// Copyright (c) 2010 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 "base/ref_counted.h"
+#include "base/scoped_ptr.h"
+#include "base/shared_memory.h"
+#include "base/simple_thread.h"
+#include "base/sync_socket.h"
+#include "third_party/ppapi/c/dev/ppb_audio_dev.h"
+#include "third_party/ppapi/c/dev/ppb_audio_config_dev.h"
+#include "third_party/ppapi/c/dev/ppb_audio_trusted_dev.h"
+#include "webkit/glue/plugins/pepper_plugin_delegate.h"
+#include "webkit/glue/plugins/pepper_plugin_instance.h"
+#include "webkit/glue/plugins/pepper_plugin_module.h"
+#include "webkit/glue/plugins/pepper_resource.h"
+
+#ifndef WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_AUDIO_H_
+#define WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_AUDIO_H_
+
+namespace pepper {
+
+class PluginInstance;
+class PluginModule;
+
+class AudioConfig : public Resource {
+ public:
+  AudioConfig(PluginModule* module, int32_t sample_rate,
+              int32_t sample_frame_count);
+
+  static const PPB_AudioConfig_Dev* GetInterface();
+
+  uint32_t sample_rate() { return sample_rate_; }
+  uint32_t sample_frame_count() { return sample_frame_count_; }
+
+ private:
+  // Resource override.
+  virtual AudioConfig* AsAudioConfig();
+
+  int sample_rate_;
+  int sample_frame_count_;
+};
+
+class Audio : public Resource,
+              public PluginDelegate::PlatformAudio::Client,
+              public base::DelegateSimpleThread::Delegate {
+ public:
+  explicit Audio(PluginModule* module);
+  virtual ~Audio();
+
+  static const PPB_Audio_Dev* GetInterface();
+  static const PPB_AudioTrusted_Dev* GetTrustedInterface();
+
+  bool Init(PluginDelegate* plugin_delegate, PP_Resource config_id,
+            PPB_Audio_Callback callback, void* user_data);
+
+  PP_Resource GetCurrentConfiguration() {
+    return config_->GetReference();
+  }
+
+  bool StartPlayback();
+
+  bool StopPlayback();
+
+  // Resource override.
+  virtual Audio* AsAudio();
+
+ private:
+  // pepper::PluginDelegate::PlatformAudio::Client implementation.
+  virtual void StreamCreated(base::SharedMemoryHandle shared_memory_handle,
+                             size_t shared_memory_size_,
+                             base::SyncSocket::Handle socket);
+  // End of pepper::PluginDelegate::PlatformAudio::Client implementation.
+
+  // Audio thread. DelegateSimpleThread::Delegate implementation.
+  virtual void Run();
+  // End of DelegateSimpleThread::Delegate implementation.
+
+  // True if playing the stream.
+  bool playing_;
+
+  // AudioConfig used for creating this Audio object.
+  scoped_refptr<AudioConfig> config_;
+
+  // PluginDelegate audio object that we delegate audio IPC through.
+  scoped_ptr<PluginDelegate::PlatformAudio> audio_;
+
+  // Socket used to notify us when audio is ready to accept new samples. This
+  // pointer is created in StreamCreated().
+  scoped_ptr<base::SyncSocket> socket_;
+
+  // Sample buffer in shared memory. This pointer is created in
+  // StreamCreated(). The memory is only mapped when the audio thread is
+  // created.
+  scoped_ptr<base::SharedMemory> shared_memory_;
+
+  // The size of the sample buffer in bytes.
+  size_t shared_memory_size_;
+
+  // When the callback is set, this thread is spawned for calling it.
+  scoped_ptr<base::DelegateSimpleThread> audio_thread_;
+
+  // Callback to call when audio is ready to accept new samples.
+  volatile PPB_Audio_Callback callback_;
+
+  // User data pointer passed verbatim to the callback function.
+  void* user_data_;
+};
+
+}  // namespace pepper
+
+#endif  // WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_AUDIO_H_
+