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annotate psg.h @ 468:949c7d875693 v0.1.0

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Added README file
author Mike Pavone <pavone@retrodev.com>
date Wed, 11 Sep 2013 00:08:33 -0700
parents 140af5509ce7
children 3e1573fa22cf
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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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11 typedef struct {
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12 int16_t *audio_buffer;
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13 int16_t *back_buffer;
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14 double buffer_fraction;
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15 double buffer_inc;
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16 uint32_t buffer_pos;
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17 uint32_t clock_inc;
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18 uint32_t cycles;
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19 uint32_t samples_frame;
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20 uint16_t lsfr;
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21 uint16_t counter_load[4];
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22 uint16_t counters[4];
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23 uint8_t volume[4];
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24 uint8_t output_state[4];
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25 uint8_t noise_out;
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26 uint8_t noise_use_tone;
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27 uint8_t noise_type;
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28 uint8_t latch;
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29 } psg_context;
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32 void psg_init(psg_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t samples_frame);
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33 void psg_write(psg_context * context, uint8_t value);
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34 void psg_run(psg_context * context, uint32_t cycles);
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35
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36 #endif //PSG_CONTEXT_H_
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37