77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
#pragma once
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#include "playback_backend.hpp"
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#include <cstdint>
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#include <stddef.h>
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#include <stdint.h>
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#include "file_backend.hpp"
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enum ZsmCommandId {
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PsgWrite,
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ExtCmd,
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FmWrite,
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ZsmEOF,
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Delay
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};
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struct reg_pair {
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uint8_t reg;
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uint8_t val;
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};
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struct ZsmCommand {
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ZsmCommandId id;
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union {
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struct {
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uint8_t reg;
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uint8_t val;
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} psg_write;
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struct {
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uint8_t channel;
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uint8_t bytes;
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union {
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uint8_t *pcm;
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struct {
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uint8_t chip_id;
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uint8_t writes;
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uint8_t *write_bytes;
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} expansion;
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uint8_t *sync;
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uint8_t *custom;
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};
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} extcmd;
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struct {
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uint8_t len;
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reg_pair *regs;
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} fm_write;
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uint8_t delay;
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};
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~ZsmCommand();
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};
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class ZsmBackend : public PlaybackBackend {
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File *file;
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std::vector<uint8_t> audio_buf;
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uint32_t loop_point;
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uint32_t pcm_offset;
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uint8_t fm_mask;
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uint16_t psg_channel_mask;
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uint16_t tick_rate;
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size_t music_data_start;
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size_t music_data_len;
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double ticks;
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double delayTicks = 0.0;
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double position;
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void seek_internal(double position);
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ZsmCommand get_command();
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public:
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inline std::string get_id() override {
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return "zsm";
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}
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inline std::string get_name() override {
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return "ZSM player";
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}
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void seek(double position) override;
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void load(const char *filename) override;
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void switch_stream(int idx) override;
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void cleanup() override;
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int get_stream_idx() override;
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size_t render(void *buf, size_t maxlen) override;
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double get_position() override;
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inline ~ZsmBackend() override { }
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};
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