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      1 /*
      2  * libjingle
      3  * Copyright 2010 Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef TALK_SESSION_MEDIA_MEDIARECORDER_H_
     29 #define TALK_SESSION_MEDIA_MEDIARECORDER_H_
     30 
     31 #include <map>
     32 #include <string>
     33 
     34 #include "talk/base/criticalsection.h"
     35 #include "talk/base/scoped_ptr.h"
     36 #include "talk/base/sigslot.h"
     37 #include "talk/session/media/channel.h"
     38 #include "talk/session/media/mediasink.h"
     39 
     40 namespace talk_base {
     41 class Pathname;
     42 class FileStream;
     43 }
     44 
     45 namespace cricket {
     46 
     47 class BaseChannel;
     48 class VideoChannel;
     49 class VoiceChannel;
     50 class RtpDumpWriter;
     51 
     52 // RtpDumpSink implements MediaSinkInterface by dumping the RTP/RTCP packets to
     53 // a file.
     54 class RtpDumpSink : public MediaSinkInterface, public sigslot::has_slots<> {
     55  public:
     56   // Takes ownership of stream.
     57   explicit RtpDumpSink(talk_base::StreamInterface* stream);
     58   virtual ~RtpDumpSink();
     59 
     60   virtual void SetMaxSize(size_t size);
     61   virtual bool Enable(bool enable);
     62   virtual bool IsEnabled() const { return recording_; }
     63   virtual void OnPacket(const void* data, size_t size, bool rtcp);
     64   virtual void set_packet_filter(int filter);
     65   int packet_filter() const { return packet_filter_; }
     66   void Flush();
     67 
     68  private:
     69   size_t max_size_;
     70   bool recording_;
     71   int packet_filter_;
     72   talk_base::scoped_ptr<talk_base::StreamInterface> stream_;
     73   talk_base::scoped_ptr<RtpDumpWriter> writer_;
     74   talk_base::CriticalSection critical_section_;
     75 
     76   DISALLOW_COPY_AND_ASSIGN(RtpDumpSink);
     77 };
     78 
     79 class MediaRecorder {
     80  public:
     81   MediaRecorder();
     82   virtual ~MediaRecorder();
     83 
     84   bool AddChannel(VoiceChannel* channel,
     85                   talk_base::StreamInterface* send_stream,
     86                   talk_base::StreamInterface* recv_stream,
     87                   int filter);
     88   bool AddChannel(VideoChannel* channel,
     89                   talk_base::StreamInterface* send_stream,
     90                   talk_base::StreamInterface* recv_stream,
     91                   int filter);
     92   void RemoveChannel(BaseChannel* channel, SinkType type);
     93   bool EnableChannel(BaseChannel* channel, bool enable_send, bool enable_recv,
     94                      SinkType type);
     95   void FlushSinks();
     96 
     97  private:
     98   struct SinkPair {
     99     bool video_channel;
    100     int filter;
    101     talk_base::scoped_ptr<RtpDumpSink> send_sink;
    102     talk_base::scoped_ptr<RtpDumpSink> recv_sink;
    103   };
    104 
    105   bool InternalAddChannel(BaseChannel* channel,
    106                           bool video_channel,
    107                           talk_base::StreamInterface* send_stream,
    108                           talk_base::StreamInterface* recv_stream,
    109                           int filter);
    110 
    111   std::map<BaseChannel*, SinkPair*> sinks_;
    112   talk_base::CriticalSection critical_section_;
    113 
    114   DISALLOW_COPY_AND_ASSIGN(MediaRecorder);
    115 };
    116 
    117 }  // namespace cricket
    118 
    119 #endif  // TALK_SESSION_MEDIA_MEDIARECORDER_H_
    120