From 6fd10cdacb5cbe47a4fc339c20a733d4a9a384a1 Mon Sep 17 00:00:00 2001 From: Takamichi Horikawa Date: Sat, 26 Nov 2016 20:57:57 +0900 Subject: initial --- fmdriver/ppz8.h | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 fmdriver/ppz8.h (limited to 'fmdriver/ppz8.h') diff --git a/fmdriver/ppz8.h b/fmdriver/ppz8.h new file mode 100644 index 0000000..6ced669 --- /dev/null +++ b/fmdriver/ppz8.h @@ -0,0 +1,76 @@ +#ifndef MYON_PPZ8_H_INCLUDED +#define MYON_PPZ8_H_INCLUDED + +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +struct ppz8_pcmvoice { + uint32_t start; + uint32_t len; + uint32_t loopstart; + uint32_t loopend; + uint16_t origfreq; +}; + +struct ppz8_pcmbuf { + int16_t *data; + uint32_t buflen; + struct ppz8_pcmvoice voice[128]; +}; + +struct ppz8_channel { + uint64_t ptr; + uint64_t loopstartptr; + uint64_t loopendptr; + uint64_t endptr; + uint32_t freq; + uint32_t loopstartoff; + uint32_t loopendoff; + int16_t prevout[2]; + uint8_t vol; + uint8_t pan; + uint8_t voice; + bool playing; +}; + +struct ppz8 { + struct ppz8_pcmbuf buf[2]; + struct ppz8_channel channel[8]; + uint16_t srate; + uint8_t totalvol; + uint16_t mix_volume; +}; + +void ppz8_init(struct ppz8 *ppz8, uint16_t srate, uint16_t mix_volume); +void ppz8_mix(struct ppz8 *ppz8, int16_t *buf, unsigned samples); +bool ppz8_pvi_load(struct ppz8 *ppz8, uint8_t buf, + const uint8_t *pvidata, uint32_t pvidatalen, + int16_t *decodebuf); + +static inline uint32_t ppz8_pvi_decodebuf_samples(uint32_t pvidatalen) { + if (pvidatalen < 0x210) return 0; + return (pvidatalen - 0x210) * 2; +} + +struct ppz8_functbl { + void (*channel_play)(struct ppz8 *ppz8, uint8_t channel, uint8_t voice); + void (*channel_stop)(struct ppz8 *ppz8, uint8_t channel); + void (*channel_volume)(struct ppz8 *ppz8, uint8_t channel, uint8_t vol); + void (*channel_freq)(struct ppz8 *ppz8, uint8_t channel, uint32_t freq); + void (*channel_loopoffset)(struct ppz8 *ppz8, uint8_t channel, + uint32_t startoff, uint32_t endoff); + void (*channel_pan)(struct ppz8 *ppz8, uint8_t channel, uint8_t pan); + void (*total_volume)(struct ppz8 *ppz8, uint8_t vol); +}; + +extern const struct ppz8_functbl ppz8_functbl; + +#ifdef __cplusplus +} +#endif + +#endif // MYON_PPZ8_H_INCLUDED -- cgit v1.2.3