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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_MEDIA_MEDIA_MODULE_H_
#define COBALT_MEDIA_MEDIA_MODULE_H_
#include <map>
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/message_loop_proxy.h"
#include "base/optional.h"
#include "base/threading/thread.h"
#include "cobalt/base/user_log.h"
#include "cobalt/math/size.h"
#include "cobalt/media/can_play_type_handler.h"
#include "cobalt/media/web_media_player_factory.h"
#include "cobalt/render_tree/image.h"
#include "cobalt/render_tree/resource_provider.h"
#include "cobalt/system_window/system_window.h"
#if defined(COBALT_MEDIA_SOURCE_2016)
#include "cobalt/media/player/web_media_player_delegate.h"
#else // defined(COBALT_MEDIA_SOURCE_2016)
#include "media/filters/shell_video_decoder_impl.h"
#include "media/player/web_media_player_delegate.h"
#endif // defined(COBALT_MEDIA_SOURCE_2016)
namespace cobalt {
namespace media {
#if !defined(COBALT_MEDIA_SOURCE_2016)
typedef ::media::ShellRawVideoDecoderFactory ShellRawVideoDecoderFactory;
typedef ::media::WebMediaPlayer WebMediaPlayer;
typedef ::media::WebMediaPlayerDelegate WebMediaPlayerDelegate;
#endif // !defined(COBALT_MEDIA_SOURCE_2016)
// TODO: Collapse MediaModule into ShellMediaPlatform.
class MediaModule : public WebMediaPlayerFactory,
public WebMediaPlayerDelegate {
public:
struct Options {
Options()
: use_audio_decoder_stub(false),
use_null_audio_streamer(false),
use_video_decoder_stub(false),
disable_webm_vp9(false) {}
bool use_audio_decoder_stub;
bool use_null_audio_streamer;
bool use_video_decoder_stub;
bool disable_webm_vp9;
base::optional<math::Size> output_resolution_override;
};
typedef render_tree::Image Image;
// Calculates the output resolution based on the window size and override.
static math::Size CalculateOutputResolution(
system_window::SystemWindow* system_window,
const base::optional<math::Size>& output_resolution_override);
// MediaModule implementation should implement this function to allow creation
// of CanPlayTypeHandler.
static scoped_ptr<CanPlayTypeHandler> CreateCanPlayTypeHandler();
virtual ~MediaModule() {}
// Returns true when the setting is set successfully or if the setting has
// already been set to the expected value. Returns false when the setting is
// invalid or not set to the expected value.
virtual bool SetConfiguration(const std::string& name, int32 value) {
UNREFERENCED_PARAMETER(name);
UNREFERENCED_PARAMETER(value);
return false;
}
// The following functions will be called inside Suspend() and Resume()
// from the main thread. Sub-classes can override these functions for
// platform specific tasks.
virtual void OnSuspend() {}
virtual void OnResume(render_tree::ResourceProvider* resource_provider) {
UNREFERENCED_PARAMETER(resource_provider);
}
virtual system_window::SystemWindow* system_window() const { return NULL; }
void Suspend();
void Resume(render_tree::ResourceProvider* resource_provider);
#if !defined(COBALT_MEDIA_SOURCE_2016)
#if !defined(COBALT_BUILD_TYPE_GOLD)
virtual ShellRawVideoDecoderFactory* GetRawVideoDecoderFactory() {
return NULL;
}
#endif // !defined(COBALT_BUILD_TYPE_GOLD)
#endif // !defined(COBALT_MEDIA_SOURCE_2016)
// TODO: Move the following methods into class like MediaModuleBase
// to ensure that MediaModule is an interface.
// WebMediaPlayerDelegate methods
void RegisterPlayer(WebMediaPlayer* player) override;
void UnregisterPlayer(WebMediaPlayer* player) override;
// This function should be defined on individual platform to create the
// platform specific MediaModule.
static scoped_ptr<MediaModule> Create(
system_window::SystemWindow* system_window,
render_tree::ResourceProvider* resource_provider,
const Options& options = Options());
protected:
MediaModule() : thread_("media_module"), suspended_(false) {
thread_.Start();
message_loop_ = thread_.message_loop_proxy();
}
private:
void RegisterDebugState(WebMediaPlayer* player);
void DeregisterDebugState();
void SuspendTask();
void ResumeTask();
void RegisterPlayerTask(WebMediaPlayer* player);
void UnregisterPlayerTask(WebMediaPlayer* player);
// When the value of a particular player is true, it means the player is
// paused by us.
typedef std::map<WebMediaPlayer*, bool> Players;
// The thread that |players_| is accessed from,
base::Thread thread_;
scoped_refptr<base::MessageLoopProxy> message_loop_;
Players players_;
bool suspended_;
};
} // namespace media
} // namespace cobalt
#endif // COBALT_MEDIA_MEDIA_MODULE_H_