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annotate psg.h @ 380:1c8d74f2ab0b

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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.
author Mike Pavone <pavone@retrodev.com>
date Mon, 03 Jun 2013 21:43:38 -0700
parents 62177cc39049
children 140af5509ce7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
354
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
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1 #ifndef PSG_CONTEXT_H_
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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2 #define PSG_CONTEXT_H_
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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3
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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4 #include <stdint.h>
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
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5
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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6 typedef struct {
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Mike Pavone <pavone@retrodev.com>
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7 int16_t *audio_buffer;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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8 int16_t *back_buffer;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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9 double buffer_fraction;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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10 double buffer_inc;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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11 uint32_t buffer_pos;
380
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.
Mike Pavone <pavone@retrodev.com>
parents: 364
diff changeset
12 uint32_t clock_inc;
354
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
13 uint32_t cycles;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
14 uint32_t samples_frame;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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15 uint16_t lsfr;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
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16 uint16_t counter_load[4];
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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17 uint16_t counters[4];
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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18 uint8_t volume[4];
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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19 uint8_t output_state[4];
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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20 uint8_t noise_out;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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21 uint8_t noise_use_tone;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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22 uint8_t noise_type;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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23 uint8_t latch;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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24 } psg_context;
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Mike Pavone <pavone@retrodev.com>
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25
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
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26
380
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.
Mike Pavone <pavone@retrodev.com>
parents: 364
diff changeset
27 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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15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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28 void psg_write(psg_context * context, uint8_t value);
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
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29 void psg_run(psg_context * context, uint32_t cycles);
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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30
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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31 #endif //PSG_CONTEXT_H_
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
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32