ref: e391b7ec8c0dc746a70725f3fc598def0419d1e6
dir: /sys/include/pcm.h/
#pragma lib "libpcm.a"
#pragma src "/sys/src/libpcm"
typedef struct Pcmconv Pcmconv;
typedef struct Pcmdesc Pcmdesc;
#pragma incomplete Pcmconv
struct Pcmdesc
{
int rate;
int channels;
int framesz;
int abits; /* bits after input conversion */
int bits; /* bits in input stream per sample */
Rune fmt;
};
extern Pcmdesc pcmdescdef; /* s16c2r44100 */
int pcmdescfmt(Fmt*);
int mkpcmdesc(char *f, Pcmdesc *d);
Pcmconv *allocpcmconv(Pcmdesc *in, Pcmdesc *out);
void freepcmconv(Pcmconv *c);
int pcmconv(Pcmconv *c, void *in0, void *out0, int insz);
int pcmratio(Pcmconv *c, int insz);