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/*
* Copyright (C) 2004-2013 Savoir-Faire Linux Inc.
* Author: Alexandre Savard <alexandre.savard@savoirfairelinux.com>
*
* Mostly borrowed from asterisk's sources (Steve Underwood <steveu@coppice.org>)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Additional permission under GNU GPL version 3 section 7:
*
* If you modify this program, or any covered work, by linking or
* combining it with the OpenSSL project's OpenSSL library (or a
* modified version of that library), containing parts covered by the
* terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
* grants you additional permission to convey the resulting work.
* Corresponding Source for a non-source form of such a combination
* shall include the source code for the parts of OpenSSL used as well
* as that of the covered work.
*/
#include "audiocodec.h"
#include <cassert>
using std::ptrdiff_t;
namespace sfl {
AudioCodec::AudioCodec(uint8_t payload, const std::string &codecName, uint32_t clockRate, unsigned frameSize, uint8_t channels) :
codecName_(codecName),
clockRate_(clockRate),
clockRateCur_(clockRate),
channels_(channels),
channelsCur_(channels),
frameSize_(frameSize),
bitrate_(0.0),
payload_(payload),
hasDynamicPayload_((payload_ >= 96 and payload_ <= 127) or payload_ == 9)
{}
AudioCodec::AudioCodec(const AudioCodec& c) :
codecName_(c.codecName_),
clockRate_(c.clockRate_),
clockRateCur_(c.clockRateCur_),
channels_(c.channels_),
channelsCur_(c.channelsCur_),
frameSize_(c.frameSize_),
bitrate_(c.bitrate_),
payload_(c.payload_),
hasDynamicPayload_(c.hasDynamicPayload_)
{}
int AudioCodec::decode(SFLAudioSample *, unsigned char *, size_t)
{
// Unimplemented!
assert(false);
return 0;
}
int AudioCodec::encode(unsigned char *, SFLAudioSample *, size_t)
{
// Unimplemented!
assert(false);
return 0;
}
// Mono only, subclasses must implement multichannel support
int AudioCodec::decode(std::vector<std::vector<SFLAudioSample> > &pcm, const uint8_t* data, size_t len)
{
return decode(pcm[0].data(), const_cast<uint8_t*>(data), len);
}
// Mono only, subclasses must implement multichannel support
size_t AudioCodec::encode(const std::vector<std::vector<SFLAudioSample> > &pcm, uint8_t *data, size_t len)
{
return encode(data, const_cast<SFLAudioSample*>(pcm[0].data()), len);
}
int AudioCodec::decode(std::vector<std::vector<SFLAudioSample> > &pcm)
{
pcm.clear();
return frameSize_;
}
std::string AudioCodec::getMimeSubtype() const
{
return codecName_;
}
uint8_t AudioCodec::getPayloadType() const
{
return payload_;
}
bool AudioCodec::hasDynamicPayload() const
{
return hasDynamicPayload_;
}
uint32_t AudioCodec::getClockRate() const
{
return clockRate_;
}
uint32_t AudioCodec::getCurrentClockRate() const
{
return clockRateCur_;
}
uint32_t AudioCodec::getSDPClockRate() const
{
return clockRate_;
}
unsigned AudioCodec::getFrameSize() const
{
return frameSize_;
}
double AudioCodec::getBitRate() const
{
return bitrate_;
}
uint8_t AudioCodec::getChannels() const
{
return channels_;
}
uint8_t AudioCodec::getCurrentChannels() const
{
return channelsCur_;
}
const char *
AudioCodec::getSDPChannels() const
{
return "";
}
} // end namespace sfl
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