vgwav.c

adc 3208 上面实现图片旋转的实例

//************************************************************************************
//
// 	TITLE 	: Voice Functions for VRender Series
// 	DESCRIPT: Voice Functions
//
//************************************************************************************


#include "vgSnd.h"
#include "vgSndMem.h"

#define IsStatusBusy( _C_ )		(Status & (1L<<(_C_)))
#define IsStatusIdle( _C_ )		(!IsStatusBusy( _C_ ))

#define __EMULATION__
/*
typedef unsigned int    dword;
typedef unsigned short  word;
typedef unsigned char   byte;
*/
#define  file_w *(word*)&filename
#define  file_l *(int *)&filename


vgBOOL 	vgSndPlayWav( _DGSNDWAV *pwav )
{	
	U8	vchan= 0, i;
	U32 smpaddr;
	U32 Status = vgSndGetStatus();

	// 0-15 channel for MUSIC
	for( i=0 ; i<_vgSoundMaxChannel ; i++ )
		if( IsStatusIdle(i) )	break;
	
	if( i==_vgSoundMaxChannel )	
	{
//zy		uartprintf( "Channel Allocation Error" );
		return vgFALSE;
	}
	pwav->channel = vchan = i;
//	_VGMSG(( "status : %d -> %08X\n", i, Status ));

	smpaddr = ((U32)pwav->data - FMEM_BASE_ADDRESS) >> 1;
	_vgSndChannel[vchan].CurSAddr = smpaddr<<10;
	_vgSndChannel[vchan].EnvVol = 127<<16;
//	_vgSndChannel[vchan].dSAddr = (S32)( ((float)pwav->frequency*(float)(1L<<10))/_vgSoundPlayFrequencyFloat );
	_vgSndChannel[vchan].dSAddr = (S32)( ((pwav->frequency)<<10)/_vgSoundPlayFrequency );
	if( pwav->mode & (DG_SND_MODE_8BIT|DG_SND_MODE_ULAW) )	_vgSndChannel[vchan].dSAddr >>= 1;
	_vgSndChannel[vchan].LoopEnd		= smpaddr + (pwav->length>>1) - 2;
	_vgSndChannel[vchan].LoopBegin		= smpaddr;
	if( _vgSoundForceMono )
	{
		_vgSndChannel[vchan].RChnVol = _vgSndChannel[vchan].LChnVol = (pwav->lvolume + pwav->rvolume)>>1;
	}
	else
	{
		_vgSndChannel[vchan].LChnVol = pwav->lvolume;
		_vgSndChannel[vchan].RChnVol = pwav->rvolume;
	}
	_vgSndChannel[vchan].LoopDir = 1;
	_vgSndChannel[vchan].Mode = (U8)(pwav->mode); // | DG_SND_MODE_TM);

	vgSndSetDataFileNoEnvelope( vchan, &_vgSndChannel[vchan] );
	vgSndSetDataFile( vchan, &_vgSndChannel[vchan] );
	vgSndSetNoteOn( vchan );
	vgSndSetStatusBusy( vchan );
	
	return vgTRUE;
}

vgBOOL	vgSndSetWav(char *filename, U32 filelength, U32 frequency, S8 volume, U8 mode, _DGSNDWAV *pwav )
{

	//vgFILE fp;
//	U32 filelength;
	S16 *pdata;
/*	
	// Read sound data from file.
	if( (fp=vgfopen( filename, "rb" ))== vgNULL )
	{
		uartprintf( "File(%s) open Error.\n\r", filename );
		return vgFALSE;
	}
	
	vgfseek( fp, 0, vgSEEK_END );
	filelength = vgftell( fp );
	vgfseek( fp, 0, vgSEEK_SET );
	_VGMSG(( "Loading Wav.....%ld bytes.\r\n", filelength ));
*/  
//    filelength = (file_l[ 0x28 ]);
    
	// Copy sound data to VR0 Memory.
	if( (pwav->data = (S16 *)VR0SndMalloc( SOUND_MEMORY_BANK_WAV, filelength )) == vgNULL )
	{
//zy		uartprintf( "vgSndSetWav : SND Memory(%ld bytes) Allocation Error.\r\n", filelength );
		return vgFALSE;
	}

	pdata = (S16*)(filename + 0x2c);

#ifdef __EMULATION__
{
/*	if( (pdata = (S16 *)vgMalloc( filelength )) == vgNULL )
	{
		uartprintf( "vgSndSetWav : Memory(%ld) allocation Error.\r\n", filelength );
		return vgFALSE;
	}
*/
//	vgfread( pdata, filelength, 1, fp);
	VR0SndCopyMemory( pwav->data, (S16 *)pdata, filelength );
	vgFree( pdata );
}
#else /* !__EMULATION__ */

	vgfread( pwav->data, filelength, 1, fp );

#endif /* __EMULATION__ */


//zy	_VGMSG(( "Completed.\r\n" ));
//	vgfclose( fp );

	pwav->length = filelength;
	pwav->frequency = frequency;
	pwav->lvolume = pwav->rvolume = volume;
	pwav->mode = mode;
	return vgTRUE;
}