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annotate psg.h @ 2009:4ace0fef6f8f

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Add support for the parts of the KMod debug ports used by SGDK
author Mike Pavone <pavone@retrodev.com>
date Mon, 19 Oct 2020 15:46:16 -0700
parents 508522f08e4d
children 2648081f3100
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140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #ifndef PSG_CONTEXT_H_
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7 #define PSG_CONTEXT_H_
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8
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9 #include <stdint.h>
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10 #include "serialize.h"
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4c322abd9fa5 Split generic part of audio code into a separate file so it can be used in other targets besides SDL
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11 #include "render_audio.h"
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12 #include "vgm.h"
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14 typedef struct {
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15 audio_source *audio;
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16 vgm_writer *vgm;
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1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
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17 uint32_t clock_inc;
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18 uint32_t cycles;
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19 uint16_t lsfr;
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20 uint16_t counter_load[4];
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21 uint16_t counters[4];
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22 uint8_t volume[4];
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23 uint8_t output_state[4];
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24 uint8_t noise_out;
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25 uint8_t noise_use_tone;
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26 uint8_t noise_type;
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27 uint8_t latch;
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28 } psg_context;
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31 void psg_init(psg_context * context, uint32_t master_clock, uint32_t clock_div);
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252dfd29831d Selecting a second game from the menu now works
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32 void psg_free(psg_context *context);
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33 void psg_adjust_master_clock(psg_context * context, uint32_t master_clock);
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34 void psg_write(psg_context * context, uint8_t value);
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35 void psg_run(psg_context * context, uint32_t cycles);
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36 void psg_vgm_log(psg_context *context, uint32_t master_clock, vgm_writer *vgm);
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37 void psg_serialize(psg_context *context, serialize_buffer *buf);
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38 void psg_deserialize(deserialize_buffer *buf, void *vcontext);
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40 #endif //PSG_CONTEXT_H_
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41