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#define MIXF_MIXBUFLEN 4096
#define MIXF_MAXCHAN 255
//#define MIXF_PLAYSTEREO 0 Floating point mixer doesn't support stereo samples, only mono to stereo output
#define MIXF_INTERPOLATE 2
#define MIXF_INTERPOLATEQ 4
#define MIXF_FILTER 8
#define MIXF_QUIET 16
#define MIXF_LOOPED 32
#define MIXF_PLAYING 256
#define MIXF_MUTE 512
#define MIXF_UNSIGNED 1
#define MIXF_16BITOUT 2
#define MIXF_VOLRAMP 256
#define MIXF_DECLICK 512
extern void mixer (void);
extern void prepare_mixer (void);
extern void getchanvol (int n, int len);
#define MAXVOICES MIXF_MAXCHAN
typedef struct
{
float *tempbuf; /* ptr to 32 bit temp-buffer */
void *outbuf; /* ptr to 16 bit mono-buffer */
uint32_t nsamples; /* # of samples to generate */
uint32_t nvoices; /* # of voices */
uint32_t freqw[MIXF_MAXCHAN]; /* frequency (whole part) */
uint32_t freqf[MIXF_MAXCHAN]; /* frequency (fractional part) */
float *smpposw[MIXF_MAXCHAN]; /* sample position (whole part (pointer!)) */
uint32_t smpposf[MIXF_MAXCHAN]; /* sample position (fractional part) */
float *loopend[MIXF_MAXCHAN]; /* pointer to loop end */
uint32_t looplen[MIXF_MAXCHAN]; /* loop length in samples */
float volleft[MIXF_MAXCHAN]; /* float: left volume (1.0=normal) */
float volright[MIXF_MAXCHAN]; /* float: right volume (1.0=normal) */
float rampleft[MIXF_MAXCHAN]; /* float: left volramp (dvol/sample) */
float rampright[MIXF_MAXCHAN]; /* float: right volramp (dvol/sample) */
uint32_t voiceflags[MIXF_MAXCHAN]; /* voice status flags */
float ffreq[MIXF_MAXCHAN]; /* filter frequency (0<=x<=1) */
float freso[MIXF_MAXCHAN]; /* filter resonance (0<=x<1) */
float fadeleft,faderight; /* temp holding register - TODO, check if they should be local for channel */
float fl1[MIXF_MAXCHAN]; /* filter lp buffer */
float fb1[MIXF_MAXCHAN]; /* filter bp buffer */
int isstereo; /* flag for stereo output */
int outfmt; /* output format */
float voll, volr; /* output volume */
float ct0[256]; /* interpolation tab for s[-1] */
float ct1[256]; /* interpolation tab for s[0] */
float ct2[256]; /* interpolation tab for s[1] */
float ct3[256]; /* interpolation tab for s[2] */
uint32_t samprate;
struct mixfpostprocregstruct *postprocs; /* TODO */
/* private to mixer, used be dwmixfa_8087.c */
float volrl; /* volume current left */
float volrr; /* volume current right */
uint16_t clipval; /* used in clippers in order to transfer into register */
uint32_t mixlooplen; /* lenght of loop in samples*/
uint32_t looptype; /* local version of voiceflags[N] */
float magic1; /* internal dumping variable for filters */
float ffrq;
float frez;
float __fl1;
float __fb1;
} dwmixfa_state_t;
extern dwmixfa_state_t dwmixfa_state;
#ifdef I386_ASM
extern void start_dwmixfa(void); /* these two are used to calculate memory remapping (self modifying code) */
extern void stop_dwmixfa(void);
#endif
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