mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-09-24 15:54:12 +00:00
125 lines
2.6 KiB
C++
125 lines
2.6 KiB
C++
/*
|
|
simple waveout class.
|
|
usage:
|
|
create the object
|
|
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
|
|
ForcePlay after writing last data block to ensure that all your PCM data gets queued to waveout
|
|
wait for GetLatency() to become 0 to ensure that playback is finished
|
|
delete the object
|
|
*/
|
|
|
|
|
|
class WaveOutConfig
|
|
{
|
|
friend class WaveOut;
|
|
private:
|
|
UINT sr,nch,bps,buf_ms,dev,prebuf;
|
|
WCHAR* error;
|
|
void SetError(const WCHAR* x);
|
|
bool use_volume,use_altvol,resetvol;
|
|
public:
|
|
WaveOutConfig()
|
|
{
|
|
error=0;
|
|
sr=44100;
|
|
nch=2;
|
|
bps=16;
|
|
buf_ms=2000;
|
|
dev=0;
|
|
prebuf=200;
|
|
use_volume=1;
|
|
use_altvol=0;
|
|
resetvol=0;
|
|
}
|
|
void SetPCM(UINT _sr,UINT _nch,UINT _bps) {sr=_sr;nch=_nch;bps=_bps;}
|
|
void SetBuffer(UINT _buf,UINT _prebuf) {buf_ms=_buf;prebuf=_prebuf;}
|
|
void SetDevice(UINT d) {dev=d;}
|
|
void SetVolumeSetup(bool enabled,bool alt,bool _reset) {use_volume = enabled;use_altvol=alt;resetvol=_reset;}
|
|
~WaveOutConfig()
|
|
{
|
|
if (error) LocalFree(error);
|
|
}
|
|
|
|
//call these after attempting to create WaveOut
|
|
const WCHAR* GetError() {return error;}
|
|
|
|
};
|
|
|
|
class WaveOut{
|
|
public:
|
|
static WaveOut * Create(WaveOutConfig * cfg);
|
|
|
|
~WaveOut();
|
|
|
|
int WriteData(const void * ptr,UINT siz);
|
|
|
|
int GetLatency(void);
|
|
|
|
void Flush();
|
|
|
|
|
|
void SetVolume(int v);
|
|
void SetPan(int p);
|
|
void Pause(int s);
|
|
void ForcePlay();
|
|
int CanWrite();
|
|
int IsPaused() {return paused?1:0;}
|
|
UINT GetMaxLatency() {return MulDiv(buf_size,1000,fmt_mul);}
|
|
bool PrintState(char * z);
|
|
|
|
//for gapless mode
|
|
void SetCloseOnStop(bool b) {closeonstop=b;}
|
|
bool IsClosed();
|
|
|
|
private:
|
|
WaveOut();
|
|
|
|
typedef struct tagHEADER
|
|
{
|
|
tagHEADER * next;
|
|
WAVEHDR hdr;
|
|
} HEADER;
|
|
HEADER * hdr_alloc();
|
|
void hdr_free(HEADER * h);
|
|
static void hdr_free_list(HEADER * h);
|
|
|
|
HWAVEOUT hWo;
|
|
HANDLE hThread;
|
|
HANDLE hEvent;
|
|
CRITICAL_SECTION sync;
|
|
HEADER *hdrs,*hdrs_free;
|
|
UINT fmt_bps,fmt_nch,fmt_sr,fmt_mul,fmt_align;//,fmt_chan;
|
|
char * buffer;
|
|
UINT buf_size,buf_size_used;
|
|
UINT data_written,write_ptr;
|
|
UINT minblock,maxblock,avgblock;
|
|
DWORD last_time;
|
|
DWORD p_time;
|
|
UINT prebuf;
|
|
|
|
UINT n_playing;
|
|
UINT cur_block;
|
|
bool paused,needplay;
|
|
bool die;
|
|
bool use_volume,use_altvol,use_resetvol;
|
|
bool newpause;//,needflush;
|
|
bool closeonstop;
|
|
int myvol,mypan;
|
|
DWORD orgvol;
|
|
|
|
|
|
|
|
|
|
void killwaveout();
|
|
void flush();
|
|
void update_vol();
|
|
void advance_block();
|
|
|
|
void reset_shit();
|
|
void thread();
|
|
void init();
|
|
int open(WaveOutConfig * cfg);
|
|
void do_altvol(char * ptr,UINT s);
|
|
void do_altvol_i(char * ptr,UINT max,UINT start,UINT d,int vol);
|
|
static DWORD WINAPI ThreadProc(WaveOut * p);
|
|
};
|