xref: /external/chromium/third_party/libjingle/source/talk/session/phone/codec.h

/*
 * libjingle
 * Copyright 2004--2007, Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef TALK_SESSION_PHONE_CODEC_H_
#define TALK_SESSION_PHONE_CODEC_H_

#include <string>

namespace cricket {

struct Codec {
  int id;
  std::string name;
  int clockrate;
  int bitrate;
  int channels;

  int preference;

  // Creates a codec with the given parameters.
  Codec(int pt, const std::string& nm, int cr, int br, int cs, int pr)
      : id(pt), name(nm), clockrate(cr), bitrate(br),
        channels(cs), preference(pr) {}

  // Creates an empty codec.
  Codec() : id(0), clockrate(0), bitrate(0), channels(0), preference(0) {}

  bool Matches(int payload, const std::string& nm) const;

  static bool Preferable(const Codec& first, const Codec& other) {
    return first.preference > other.preference;
  }

  std::string ToString() const;
};

struct VideoCodec {
  int id;
  std::string name;
  int width;
  int height;
  int framerate;

  int preference;

  // Creates a codec with the given parameters.
  VideoCodec(int pt, const std::string& nm, int w, int h, int fr, int pr)
      : id(pt), name(nm), width(w), height(h), framerate(fr), preference(pr) {}

  // Creates an empty codec.
  VideoCodec()
      : id(0), width(0), height(0), framerate(0), preference(0) {}

  bool Matches(int payload, const std::string& nm) const;

  static bool Preferable(const VideoCodec& first, const VideoCodec& other) {
    return first.preference > other.preference;
  }

  std::string ToString() const;
};

}  // namespace cricket

#endif  // TALK_SESSION_PHONE_CODEC_H_