126 lines
2.6 KiB
C
126 lines
2.6 KiB
C
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/*
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simple waveout class.
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usage:
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create the object
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write PCM data using WriteData(); WriteData() returns number of bytes successfully written; CanWrite() returns amout of bytes you can write at given point of time
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ForcePlay after writing last data block to ensure that all your PCM data gets queued to waveout
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wait for GetLatency() to become 0 to ensure that playback is finished
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delete the object
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*/
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class WaveOutConfig
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{
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friend class WaveOut;
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private:
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UINT sr,nch,bps,buf_ms,dev,prebuf;
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WCHAR* error;
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void SetError(const WCHAR* x);
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bool use_volume,use_altvol,resetvol;
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public:
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WaveOutConfig()
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{
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error=0;
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sr=44100;
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nch=2;
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bps=16;
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buf_ms=2000;
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dev=0;
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prebuf=200;
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use_volume=1;
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use_altvol=0;
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resetvol=0;
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}
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void SetPCM(UINT _sr,UINT _nch,UINT _bps) {sr=_sr;nch=_nch;bps=_bps;}
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void SetBuffer(UINT _buf,UINT _prebuf) {buf_ms=_buf;prebuf=_prebuf;}
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void SetDevice(UINT d) {dev=d;}
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void SetVolumeSetup(bool enabled,bool alt,bool _reset) {use_volume = enabled;use_altvol=alt;resetvol=_reset;}
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~WaveOutConfig()
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{
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if (error) LocalFree(error);
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}
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//call these after attempting to create WaveOut
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const WCHAR* GetError() {return error;}
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};
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class WaveOut{
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public:
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static WaveOut * Create(WaveOutConfig * cfg);
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~WaveOut();
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int WriteData(const void * ptr,UINT siz);
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int GetLatency(void);
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void Flush();
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void SetVolume(int v);
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void SetPan(int p);
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void Pause(int s);
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void ForcePlay();
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int CanWrite();
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int IsPaused() {return paused?1:0;}
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UINT GetMaxLatency() {return MulDiv(buf_size,1000,fmt_mul);}
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bool PrintState(char * z);
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//for gapless mode
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void SetCloseOnStop(bool b) {closeonstop=b;}
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bool IsClosed();
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private:
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WaveOut();
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typedef struct tagHEADER
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{
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tagHEADER * next;
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WAVEHDR hdr;
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} HEADER;
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HEADER * hdr_alloc();
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void hdr_free(HEADER * h);
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static void hdr_free_list(HEADER * h);
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HWAVEOUT hWo;
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HANDLE hThread;
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HANDLE hEvent;
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CRITICAL_SECTION sync;
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HEADER *hdrs,*hdrs_free;
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UINT fmt_bps,fmt_nch,fmt_sr,fmt_mul,fmt_align;//,fmt_chan;
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char * buffer;
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UINT buf_size,buf_size_used;
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UINT data_written,write_ptr;
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UINT minblock,maxblock,avgblock;
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DWORD last_time;
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DWORD p_time;
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UINT prebuf;
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UINT n_playing;
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UINT cur_block;
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bool paused,needplay;
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bool die;
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bool use_volume,use_altvol,use_resetvol;
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bool newpause;//,needflush;
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bool closeonstop;
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int myvol,mypan;
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DWORD orgvol;
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void killwaveout();
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void flush();
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void update_vol();
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void advance_block();
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void reset_shit();
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void thread();
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void init();
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int open(WaveOutConfig * cfg);
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void do_altvol(char * ptr,UINT s);
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void do_altvol_i(char * ptr,UINT max,UINT start,UINT d,int vol);
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static DWORD WINAPI ThreadProc(WaveOut * p);
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};
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