mirror of
https://github.com/badaix/snapcast.git
synced 2025-05-03 04:06:31 +02:00
98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
/***
|
|
This file is part of snapcast
|
|
Copyright (C) 2014-2016 Johannes Pohl
|
|
|
|
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, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#ifndef PCM_CHUNK_H
|
|
#define PCM_CHUNK_H
|
|
|
|
#include <chrono>
|
|
#include "message.h"
|
|
#include "wireChunk.h"
|
|
#include "common/sampleFormat.h"
|
|
|
|
|
|
namespace msg
|
|
{
|
|
|
|
/**
|
|
* Piece of PCM data with SampleFormat information
|
|
* Has information about "when" recorded (start) and duration
|
|
* frames can be read with "readFrames", which will also change the start time
|
|
*/
|
|
class PcmChunk : public WireChunk
|
|
{
|
|
public:
|
|
PcmChunk(const SampleFormat& sampleFormat, size_t ms);
|
|
PcmChunk(const PcmChunk& pcmChunk);
|
|
PcmChunk();
|
|
virtual ~PcmChunk();
|
|
|
|
int readFrames(void* outputBuffer, size_t frameCount);
|
|
int seek(int frames);
|
|
|
|
virtual chronos::time_point_hrc start() const
|
|
{
|
|
return chronos::time_point_hrc(
|
|
chronos::sec(timestamp.sec) +
|
|
chronos::usec(timestamp.usec) +
|
|
chronos::usec((chronos::usec::rep)(1000000. * ((double)idx_ / (double)format.rate)))
|
|
);
|
|
}
|
|
|
|
inline chronos::time_point_hrc end() const
|
|
{
|
|
return start() + durationLeft<chronos::usec>();
|
|
}
|
|
|
|
template<typename T>
|
|
inline T duration() const
|
|
{
|
|
return std::chrono::duration_cast<T>(chronos::nsec((chronos::nsec::rep)(1000000 * getFrameCount() / format.msRate())));
|
|
}
|
|
|
|
template<typename T>
|
|
inline T durationLeft() const
|
|
{
|
|
return std::chrono::duration_cast<T>(chronos::nsec((chronos::nsec::rep)(1000000 * (getFrameCount() - idx_) / format.msRate())));
|
|
}
|
|
|
|
inline bool isEndOfChunk() const
|
|
{
|
|
return idx_ >= getFrameCount();
|
|
}
|
|
|
|
inline size_t getFrameCount() const
|
|
{
|
|
return (payloadSize / format.frameSize);
|
|
}
|
|
|
|
inline size_t getSampleCount() const
|
|
{
|
|
return (payloadSize / format.sampleSize);
|
|
}
|
|
|
|
SampleFormat format;
|
|
|
|
private:
|
|
uint32_t idx_;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|