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reference player work

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memory usage cap, garbage collection and sinc interpolation
also ability to set playback position to a negative value
This commit is contained in:
tildearrow 2025-10-27 14:24:16 -05:00
parent f77aafb44d
commit 7a7a871198
7 changed files with 254 additions and 56 deletions
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32
src/engine/filePlayer.h
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@ -20,7 +20,10 @@
#ifndef _FILEPLAYER_H
#define _FILEPLAYER_H
#include "../ta-utils.h"
#include <thread>
#include <mutex>
#include <condition_variable>
#ifdef HAVE_SNDFILE
#include "sfWrapper.h"
@ -32,32 +35,47 @@ struct SF_INFO {
#endif
class DivFilePlayer {
float* sincTable;
float* discardBuf;
float** blocks;
bool* priorityBlock;
size_t numBlocks;
String lastError;
SFWrapper sfw;
SNDFILE* sf;
SF_INFO si;
size_t playPos;
size_t lastBlock;
ssize_t playPos;
ssize_t lastWantBlock;
ssize_t wantBlock;
int outRate;
int rateAccum;
float volume;
bool playing;
bool fileError;
bool quitThread;
bool threadHasQuit;
std::thread* cacheThread;
std::mutex cacheMutex;
std::mutex cacheThreadLock;
std::condition_variable cacheCV;
void fillBlocksNear(size_t pos);
void fillBlocksNear(ssize_t pos);
void collectGarbage(ssize_t pos);
float getSampleAt(ssize_t pos, int ch);
public:
void runCacheThread();
size_t getMemUsage();
void mix(float** buf, int chans, unsigned int size);
size_t getPos();
size_t setPos(size_t newPos, unsigned int offset=0);
ssize_t getPos();
ssize_t setPos(ssize_t newPos, unsigned int offset=0);
bool isBlockPresent(size_t pos);
bool isBlockPresent(ssize_t pos);
bool setBlockPriority(ssize_t pos, bool priority);
bool isLoaded();
bool isPlaying();
void play(unsigned int offset=0);
@ -75,4 +93,4 @@ class DivFilePlayer {
~DivFilePlayer();
};
#endif
#endif