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/*
* libjingle
* Copyright 2004 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_MEDIA_BASE_CODEC_H_
#define TALK_MEDIA_BASE_CODEC_H_
#include <map>
#include <set>
#include <string>
#include <vector>
#include "talk/media/base/constants.h"
namespace cricket {
typedef std::map<std::string, std::string> CodecParameterMap;
class FeedbackParam {
public:
FeedbackParam(const std::string& id, const std::string& param)
: id_(id),
param_(param) {
}
explicit FeedbackParam(const std::string& id)
: id_(id),
param_(kParamValueEmpty) {
}
bool operator==(const FeedbackParam& other) const;
const std::string& id() const { return id_; }
const std::string& param() const { return param_; }
private:
std::string id_; // e.g. "nack", "ccm"
std::string param_; // e.g. "", "rpsi", "fir"
};
class FeedbackParams {
public:
bool operator==(const FeedbackParams& other) const;
bool Has(const FeedbackParam& param) const;
void Add(const FeedbackParam& param);
void Intersect(const FeedbackParams& from);
const std::vector<FeedbackParam>& params() const { return params_; }
private:
bool HasDuplicateEntries() const;
std::vector<FeedbackParam> params_;
};
struct Codec {
int id;
std::string name;
int clockrate;
int preference;
CodecParameterMap params;
FeedbackParams feedback_params;
// Creates a codec with the given parameters.
Codec(int id, const std::string& name, int clockrate, int preference)
: id(id),
name(name),
clockrate(clockrate),
preference(preference) {
}
// Creates an empty codec.
Codec() : id(0), clockrate(0), preference(0) {}
// Indicates if this codec is compatible with the specified codec.
bool Matches(const Codec& codec) const;
// Find the parameter for |name| and write the value to |out|.
bool GetParam(const std::string& name, std::string* out) const;
bool GetParam(const std::string& name, int* out) const;
void SetParam(const std::string& name, const std::string& value);
void SetParam(const std::string& name, int value);
bool HasFeedbackParam(const FeedbackParam& param) const;
void AddFeedbackParam(const FeedbackParam& param);
static bool Preferable(const Codec& first, const Codec& other) {
return first.preference > other.preference;
}
// Filter |this| feedbacks params such that only those shared by both |this|
// and |other| are kept.
void IntersectFeedbackParams(const Codec& other);
Codec& operator=(const Codec& c) {
this->id = c.id; // id is reserved in objective-c
name = c.name;
clockrate = c.clockrate;
preference = c.preference;
return *this;
}
bool operator==(const Codec& c) const {
return this->id == c.id && // id is reserved in objective-c
name == c.name &&
clockrate == c.clockrate &&
preference == c.preference;
}
bool operator!=(const Codec& c) const {
return !(*this == c);
}
};
struct AudioCodec : public Codec {
int bitrate;
int channels;
// Creates a codec with the given parameters.
AudioCodec(int pt, const std::string& nm, int cr, int br, int cs, int pr)
: Codec(pt, nm, cr, pr),
bitrate(br),
channels(cs) {
}
// Creates an empty codec.
AudioCodec() : Codec(), bitrate(0), channels(0) {}
// Indicates if this codec is compatible with the specified codec.
bool Matches(const AudioCodec& codec) const;
static bool Preferable(const AudioCodec& first, const AudioCodec& other) {
return first.preference > other.preference;
}
std::string ToString() const;
AudioCodec& operator=(const AudioCodec& c) {
this->id = c.id; // id is reserved in objective-c
name = c.name;
clockrate = c.clockrate;
bitrate = c.bitrate;
channels = c.channels;
preference = c.preference;
params = c.params;
feedback_params = c.feedback_params;
return *this;
}
bool operator==(const AudioCodec& c) const {
return this->id == c.id && // id is reserved in objective-c
name == c.name &&
clockrate == c.clockrate &&
bitrate == c.bitrate &&
channels == c.channels &&
preference == c.preference &&
params == c.params &&
feedback_params == c.feedback_params;
}
bool operator!=(const AudioCodec& c) const {
return !(*this == c);
}
};
struct VideoCodec : public Codec {
int width;
int height;
int framerate;
// Creates a codec with the given parameters.
VideoCodec(int pt, const std::string& nm, int w, int h, int fr, int pr)
: Codec(pt, nm, kVideoCodecClockrate, pr),
width(w),
height(h),
framerate(fr) {
}
// Creates an empty codec.
VideoCodec()
: Codec(),
width(0),
height(0),
framerate(0) {
clockrate = kVideoCodecClockrate;
}
static bool Preferable(const VideoCodec& first, const VideoCodec& other) {
return first.preference > other.preference;
}
std::string ToString() const;
VideoCodec& operator=(const VideoCodec& c) {
this->id = c.id; // id is reserved in objective-c
name = c.name;
clockrate = c.clockrate;
width = c.width;
height = c.height;
framerate = c.framerate;
preference = c.preference;
params = c.params;
feedback_params = c.feedback_params;
return *this;
}
bool operator==(const VideoCodec& c) const {
return this->id == c.id && // id is reserved in objective-c
name == c.name &&
clockrate == c.clockrate &&
width == c.width &&
height == c.height &&
framerate == c.framerate &&
preference == c.preference &&
params == c.params &&
feedback_params == c.feedback_params;
}
bool operator!=(const VideoCodec& c) const {
return !(*this == c);
}
};
struct DataCodec : public Codec {
DataCodec(int id, const std::string& name, int preference)
: Codec(id, name, kDataCodecClockrate, preference) {
}
DataCodec() : Codec() {
clockrate = kDataCodecClockrate;
}
std::string ToString() const;
};
struct VideoEncoderConfig {
static const int kDefaultMaxThreads = -1;
static const int kDefaultCpuProfile = -1;
VideoEncoderConfig()
: max_codec(),
num_threads(kDefaultMaxThreads),
cpu_profile(kDefaultCpuProfile) {
}
VideoEncoderConfig(const VideoCodec& c)
: max_codec(c),
num_threads(kDefaultMaxThreads),
cpu_profile(kDefaultCpuProfile) {
}
VideoEncoderConfig(const VideoCodec& c, int t, int p)
: max_codec(c),
num_threads(t),
cpu_profile(p) {
}
VideoEncoderConfig& operator=(const VideoEncoderConfig& config) {
max_codec = config.max_codec;
num_threads = config.num_threads;
cpu_profile = config.cpu_profile;
return *this;
}
bool operator==(const VideoEncoderConfig& config) const {
return max_codec == config.max_codec &&
num_threads == config.num_threads &&
cpu_profile == config.cpu_profile;
}
bool operator!=(const VideoEncoderConfig& config) const {
return !(*this == config);
}
VideoCodec max_codec;
int num_threads;
int cpu_profile;
};
} // namespace cricket
#endif // TALK_MEDIA_BASE_CODEC_H_