root/content/browser/media/android/browser_demuxer_android.cc

DEFINITIONS

1. demuxer_client_id_
2. Internal
3. Initialize
4. RequestDemuxerConfigs
5. RequestDemuxerData
6. RequestDemuxerSeek
7. ClientIDExists
8. OverrideThreadForMessage
9. OnMessageReceived
10. CreateDemuxer
11. AddDemuxerClient
12. RemoveDemuxerClient
13. OnDemuxerReady
14. OnReadFromDemuxerAck
15. OnDemuxerSeekDone
16. OnDurationChanged

// Copyright 2013 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/browser/media/android/browser_demuxer_android.h"

#include "content/common/media/media_player_messages_android.h"

namespace content {

class BrowserDemuxerAndroid::Internal : public media::DemuxerAndroid {
 public:
  Internal(const scoped_refptr<BrowserDemuxerAndroid>& demuxer,
           int demuxer_client_id)
      : demuxer_(demuxer),
        demuxer_client_id_(demuxer_client_id) {}

  virtual ~Internal() {
    DCHECK(ClientIDExists()) << demuxer_client_id_;
    demuxer_->RemoveDemuxerClient(demuxer_client_id_);
  }

  // media::DemuxerAndroid implementation.
  virtual void Initialize(media::DemuxerAndroidClient* client) OVERRIDE {
    DCHECK(!ClientIDExists()) << demuxer_client_id_;
    demuxer_->AddDemuxerClient(demuxer_client_id_, client);
  }

  virtual void RequestDemuxerConfigs() OVERRIDE {
    DCHECK(ClientIDExists()) << demuxer_client_id_;
    demuxer_->Send(new MediaPlayerMsg_MediaConfigRequest(demuxer_client_id_));
  }

  virtual void RequestDemuxerData(media::DemuxerStream::Type type) OVERRIDE {
    DCHECK(ClientIDExists()) << demuxer_client_id_;
    demuxer_->Send(new MediaPlayerMsg_ReadFromDemuxer(
        demuxer_client_id_, type));
  }

  virtual void RequestDemuxerSeek(
      const base::TimeDelta& time_to_seek,
      bool is_browser_seek) OVERRIDE {
    DCHECK(ClientIDExists()) << demuxer_client_id_;
    demuxer_->Send(new MediaPlayerMsg_DemuxerSeekRequest(
        demuxer_client_id_, time_to_seek, is_browser_seek));
  }

 private:
  // Helper for DCHECKing that the ID is still registered.
  bool ClientIDExists() {
    return demuxer_->demuxer_clients_.Lookup(demuxer_client_id_);
  }

  scoped_refptr<BrowserDemuxerAndroid> demuxer_;
  int demuxer_client_id_;

  DISALLOW_COPY_AND_ASSIGN(Internal);
};

BrowserDemuxerAndroid::BrowserDemuxerAndroid()
    : BrowserMessageFilter(MediaPlayerMsgStart) {}

BrowserDemuxerAndroid::~BrowserDemuxerAndroid() {}

void BrowserDemuxerAndroid::OverrideThreadForMessage(
    const IPC::Message& message,
    BrowserThread::ID* thread) {
  switch (message.type()) {
    case MediaPlayerHostMsg_DemuxerReady::ID:
    case MediaPlayerHostMsg_ReadFromDemuxerAck::ID:
    case MediaPlayerHostMsg_DurationChanged::ID:
    case MediaPlayerHostMsg_DemuxerSeekDone::ID:
      *thread = BrowserThread::UI;
      return;
  }
}

bool BrowserDemuxerAndroid::OnMessageReceived(const IPC::Message& message,
                                              bool* message_was_ok) {
  bool handled = true;
  IPC_BEGIN_MESSAGE_MAP_EX(BrowserDemuxerAndroid, message, *message_was_ok)
    IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_DemuxerReady, OnDemuxerReady)
    IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_ReadFromDemuxerAck,
                        OnReadFromDemuxerAck)
    IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_DurationChanged,
                        OnDurationChanged)
    IPC_MESSAGE_HANDLER(MediaPlayerHostMsg_DemuxerSeekDone,
                        OnDemuxerSeekDone)
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()
  return handled;
}

scoped_ptr<media::DemuxerAndroid> BrowserDemuxerAndroid::CreateDemuxer(
    int demuxer_client_id) {
  return scoped_ptr<media::DemuxerAndroid>(
      new Internal(this, demuxer_client_id));
}

void BrowserDemuxerAndroid::AddDemuxerClient(
    int demuxer_client_id,
    media::DemuxerAndroidClient* client) {
  DVLOG(1) << __FUNCTION__ << " peer_pid=" << peer_pid()
           << " demuxer_client_id=" << demuxer_client_id;
  demuxer_clients_.AddWithID(client, demuxer_client_id);
}

void BrowserDemuxerAndroid::RemoveDemuxerClient(int demuxer_client_id) {
  DVLOG(1) << __FUNCTION__ << " peer_pid=" << peer_pid()
           << " demuxer_client_id=" << demuxer_client_id;
  demuxer_clients_.Remove(demuxer_client_id);
}

void BrowserDemuxerAndroid::OnDemuxerReady(
    int demuxer_client_id,
    const media::DemuxerConfigs& configs) {
  media::DemuxerAndroidClient* client =
      demuxer_clients_.Lookup(demuxer_client_id);
  if (client)
    client->OnDemuxerConfigsAvailable(configs);
}

void BrowserDemuxerAndroid::OnReadFromDemuxerAck(
    int demuxer_client_id,
    const media::DemuxerData& data) {
  media::DemuxerAndroidClient* client =
      demuxer_clients_.Lookup(demuxer_client_id);
  if (client)
    client->OnDemuxerDataAvailable(data);
}

void BrowserDemuxerAndroid::OnDemuxerSeekDone(
    int demuxer_client_id,
    const base::TimeDelta& actual_browser_seek_time) {
  media::DemuxerAndroidClient* client =
      demuxer_clients_.Lookup(demuxer_client_id);
  if (client)
    client->OnDemuxerSeekDone(actual_browser_seek_time);
}

void BrowserDemuxerAndroid::OnDurationChanged(int demuxer_client_id,
                                              const base::TimeDelta& duration) {
  media::DemuxerAndroidClient* client =
      demuxer_clients_.Lookup(demuxer_client_id);
  if (client)
    client->OnDemuxerDurationChanged(duration);
}

}  // namespace content