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JaceCearandOliver Bell
1f8bee518d
* Refactor m4a for better names * Bring in m4a PC backend code * Update songs data to work on 64bit * Move m4a to it's own folder * Add linker map to sdl build --------- Co-authored-by: Oliver Bell <freshollie@gmail.com>
37 lines
799 B
C
37 lines
799 B
C
#ifndef CGB_AUDIO_H
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#define CGB_AUDIO_H
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#include "lib/m4a/m4a_internal.h"
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struct AudioCGB {
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u16 ch1Freq;
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u8 ch1SweepCounter;
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u8 ch1SweepCounterI;
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bool8 ch1SweepDir;
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u8 ch1SweepShift;
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u8 Vol[4];
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u8 VolI[4];
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u8 Len[4];
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u8 LenI[4];
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bool8 LenOn[4];
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u8 EnvCounter[4];
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u8 EnvCounterI[4];
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bool8 EnvDir[4];
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bool8 DAC[4];
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float WAVRAM[32];
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u16 ch4LFSR[2];
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float outBuffer[PCM_DMA_BUF_SIZE * 2];
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};
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void cgb_audio_init(u32 rate);
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void cgb_set_sweep(u8 sweep);
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void cgb_set_wavram();
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void cgb_toggle_length(u8 channel, bool8 state);
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void cgb_set_length(u8 channel, u8 length);
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void cgb_set_envelope(u8 channel, u8 envelope);
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void cgb_trigger_note(u8 channel);
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void cgb_audio_generate(u16 samplesPerFrame);
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float *cgb_get_buffer();
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#endif
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