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      1 /*
      2  * libjingle
      3  * Copyright 2004--2007, 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_PHONE_CODEC_H_
     29 #define TALK_SESSION_PHONE_CODEC_H_
     30 
     31 #include <string>
     32 
     33 namespace cricket {
     34 
     35 struct AudioCodec {
     36   int id;
     37   std::string name;
     38   int clockrate;
     39   int bitrate;
     40   int channels;
     41 
     42   int preference;
     43 
     44   // Creates a codec with the given parameters.
     45   AudioCodec(int pt, const std::string& nm, int cr, int br, int cs, int pr)
     46       : id(pt), name(nm), clockrate(cr), bitrate(br),
     47         channels(cs), preference(pr) {}
     48 
     49   // Creates an empty codec.
     50   AudioCodec() : id(0), clockrate(0), bitrate(0), channels(0), preference(0) {}
     51 
     52   // Indicates if this codec is compatible with the specified codec.
     53   bool Matches(int payload, const std::string& nm) const;
     54   bool Matches(const AudioCodec& codec) const;
     55 
     56   static bool Preferable(const AudioCodec& first, const AudioCodec& other) {
     57     return first.preference > other.preference;
     58   }
     59 
     60   std::string ToString() const;
     61 
     62   AudioCodec& operator=(const AudioCodec& c) {
     63     this->id = c.id;  // id is reserved in objective-c
     64     name = c.name;
     65     clockrate = c.clockrate;
     66     bitrate = c.bitrate;
     67     channels = c.channels;
     68     preference =  c.preference;
     69     return *this;
     70   }
     71 
     72   bool operator==(const AudioCodec& c) const {
     73     return this->id == c.id &&  // id is reserved in objective-c
     74            name == c.name &&
     75            clockrate == c.clockrate &&
     76            bitrate == c.bitrate &&
     77            channels == c.channels &&
     78            preference == c.preference;
     79   }
     80 
     81   bool operator!=(const AudioCodec& c) const {
     82     return !(*this == c);
     83   }
     84 };
     85 
     86 struct VideoCodec {
     87   int id;
     88   std::string name;
     89   int width;
     90   int height;
     91   int framerate;
     92 
     93   int preference;
     94 
     95   // Creates a codec with the given parameters.
     96   VideoCodec(int pt, const std::string& nm, int w, int h, int fr, int pr)
     97       : id(pt), name(nm), width(w), height(h), framerate(fr), preference(pr) {}
     98 
     99   // Creates an empty codec.
    100   VideoCodec()
    101       : id(0), width(0), height(0), framerate(0), preference(0) {}
    102 
    103   bool Matches(int payload, const std::string& nm) const;
    104   bool Matches(const VideoCodec& codec) const;
    105 
    106   static bool Preferable(const VideoCodec& first, const VideoCodec& other) {
    107     return first.preference > other.preference;
    108   }
    109 
    110   std::string ToString() const;
    111 
    112   VideoCodec& operator=(const VideoCodec& c) {
    113     this->id = c.id;  // id is reserved in objective-c
    114     name = c.name;
    115     width = c.width;
    116     height = c.height;
    117     framerate = c.framerate;
    118     preference =  c.preference;
    119     return *this;
    120   }
    121 
    122   bool operator==(const VideoCodec& c) const {
    123     return this->id == c.id &&  // id is reserved in objective-c
    124            name == c.name &&
    125            width == c.width &&
    126            height == c.height &&
    127            framerate == c.framerate &&
    128            preference == c.preference;
    129   }
    130 
    131   bool operator!=(const VideoCodec& c) const {
    132     return !(*this == c);
    133   }
    134 };
    135 
    136 struct VideoEncoderConfig {
    137   static const int kDefaultMaxThreads = -1;
    138   static const int kDefaultCpuProfile = -1;
    139 
    140   VideoEncoderConfig()
    141       : max_codec(),
    142         num_threads(kDefaultMaxThreads),
    143         cpu_profile(kDefaultCpuProfile) {
    144   }
    145 
    146   VideoEncoderConfig(const VideoCodec& c)
    147       : max_codec(c),
    148         num_threads(kDefaultMaxThreads),
    149         cpu_profile(kDefaultCpuProfile) {
    150   }
    151 
    152   VideoEncoderConfig(const VideoCodec& c, int t, int p)
    153       : max_codec(c),
    154         num_threads(t),
    155         cpu_profile(p) {
    156   }
    157 
    158   VideoEncoderConfig& operator=(const VideoEncoderConfig& config) {
    159     max_codec = config.max_codec;
    160     num_threads = config.num_threads;
    161     cpu_profile = config.cpu_profile;
    162     return *this;
    163   }
    164 
    165   bool operator==(const VideoEncoderConfig& config) const {
    166     return max_codec == config.max_codec &&
    167            num_threads == config.num_threads &&
    168            cpu_profile == config.cpu_profile;
    169   }
    170 
    171   bool operator!=(const VideoEncoderConfig& config) const {
    172     return !(*this == config);
    173   }
    174 
    175   VideoCodec max_codec;
    176   int num_threads;
    177   int cpu_profile;
    178 };
    179 
    180 }  // namespace cricket
    181 
    182 #endif  // TALK_SESSION_PHONE_CODEC_H_
    183