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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef OGG_STREAM_H
#define OGG_STREAM_H
#include "System/Misc/SpringTime.h"
#include <al.h>
#include <ogg/ogg.h>
#include <vorbis/vorbisfile.h>
#include <string>
#include <vector>
class COggStream
{
public:
typedef std::vector<std::string> TagVector;
COggStream(ALuint _source);
~COggStream();
void Play(const std::string& path, float volume);
void Stop();
bool TogglePause();
void Update();
float GetPlayTime() const;
float GetTotalTime();
bool Valid() const;
bool IsFinished();
const TagVector& VorbisTags() const;
private:
void DisplayInfo();
bool IsPlaying();
bool StartPlaying();
bool DecodeStream(ALuint buffer);
void EmptyBuffers();
void ReleaseBuffers();
/**
* @brief Decode next part of the stream and queue it for playing
* @return whether it is the end of the stream
* (check for IsPlaying() whether the complete stream was played)
*/
bool UpdateBuffers();
OggVorbis_File oggStream;
vorbis_info* vorbisInfo;
static const unsigned int BUFFER_SIZE = (512 * 1024); // 512KB
static const unsigned int NUM_BUFFERS = 2;
char pcmDecodeBuffer[BUFFER_SIZE];
ALuint buffers[NUM_BUFFERS];
ALuint source;
ALenum format;
bool stopped;
bool paused;
spring_time msecsPlayed;
spring_time lastTick;
std::vector<std::string> vorbisTags;
std::string vendor;
};
#endif // OGG_STREAM_H
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