b9644e9583
Information: Our current audio macros preclude the definition of root key and pan (applicable when used in drumsets, aka "keysplit_all") for GB channels. However, this functionality does exist in m4a--Pokemon Emerald just happens not to use it. However, for the sake of people working with custom music, I believe these values should be modifiable by users. Additionally, given the recent events that have occurred with this repo, I would like to make something fully clear: I have indeed looked at the GBA SDK before, which contains notes on how these sounds are defined; therefore, I cannot blame you if you reject this PR on the grounds that the information is "tainted." However, this information is readily available and matches the same macros used for directsound--it's hardly information that one would need the source to know.
153 lines
4.3 KiB
PHP
153 lines
4.3 KiB
PHP
.macro voice_directsound base_midi_key, pan, sample_data_pointer, attack, decay, sustain, release
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.byte 0
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_voice_directsound \base_midi_key, \pan, \sample_data_pointer, \attack, \decay, \sustain, \release
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.endm
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.macro voice_directsound_no_resample base_midi_key, pan, sample_data_pointer, attack, decay, sustain, release
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.byte 8
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_voice_directsound \base_midi_key, \pan, \sample_data_pointer, \attack, \decay, \sustain, \release
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.endm
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.macro voice_directsound_alt base_midi_key, pan, sample_data_pointer, attack, decay, sustain, release
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.byte 16
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_voice_directsound \base_midi_key, \pan, \sample_data_pointer, \attack, \decay, \sustain, \release
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.endm
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.macro _voice_directsound base_midi_key, pan, sample_data_pointer, attack, decay, sustain, release
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.byte \base_midi_key
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.byte 0
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.if \pan != 0
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.byte (0x80 | \pan)
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.else
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.byte 0
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.endif
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.4byte \sample_data_pointer
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.byte \attack
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.byte \decay
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.byte \sustain
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.byte \release
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.endm
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.macro voice_square_1 base_midi_key, pan, sweep, duty_cycle, attack, decay, sustain, release
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_voice_square_1 1, \base_midi_key, \pan, \sweep, \duty_cycle, \attack, \decay, \sustain, \release
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.endm
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.macro voice_square_1_alt base_midi_key, pan, sweep, duty_cycle, attack, decay, sustain, release
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_voice_square_1 9, \base_midi_key, \pan, \sweep, \duty_cycle, \attack, \decay, \sustain, \release
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.endm
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.macro _voice_square_1 type, base_midi_key, pan, sweep, duty_cycle, attack, decay, sustain, release
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.byte \type
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.byte \base_midi_key
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.if \pan != 0
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.byte (0x80 | \pan)
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.else
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.byte 0
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.endif
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.byte \sweep
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.byte (\duty_cycle & 0x3)
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.byte 0, 0, 0
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.byte (\attack & 0x7)
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.byte (\decay & 0x7)
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.byte (\sustain & 0xF)
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.byte (\release & 0x7)
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.endm
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.macro voice_square_2 base_midi_key, pan, duty_cycle, attack, decay, sustain, release
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_voice_square_2 2, \base_midi_key, \pan, \duty_cycle, \attack, \decay, \sustain, \release
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.endm
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.macro voice_square_2_alt base_midi_key, pan, duty_cycle, attack, decay, sustain, release
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_voice_square_2 10, \base_midi_key, \pan, \duty_cycle, \attack, \decay, \sustain, \release
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.endm
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.macro _voice_square_2 type, base_midi_key, pan, duty_cycle, attack, decay, sustain, release
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.byte \type
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.byte \base_midi_key
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.if \pan != 0
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.byte (0x80 | \pan)
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.else
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.byte 0
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.endif
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.byte 0
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.byte (\duty_cycle & 0x3)
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.byte 0, 0, 0
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.byte (\attack & 0x7)
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.byte (\decay & 0x7)
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.byte (\sustain & 0xF)
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.byte (\release & 0x7)
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.endm
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.macro voice_programmable_wave base_midi_key, pan, wave_samples_pointer, attack, decay, sustain, release
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_voice_programmable_wave 3, \base_midi_key, \pan, \wave_samples_pointer, \attack, \decay, \sustain, \release
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.endm
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.macro voice_programmable_wave_alt base_midi_key, pan, wave_samples_pointer, attack, decay, sustain, release
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_voice_programmable_wave 11, \base_midi_key, \pan, \wave_samples_pointer, \attack, \decay, \sustain, \release
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.endm
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.macro _voice_programmable_wave type, base_midi_key, pan, wave_samples_pointer, attack, decay, sustain, release
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.byte \type
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.byte \base_midi_key
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.if \pan != 0
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.byte (0x80 | \pan)
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.else
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.byte 0
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.endif
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.byte 0
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.4byte \wave_samples_pointer
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.byte (\attack & 0x7)
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.byte (\decay & 0x7)
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.byte (\sustain & 0xF)
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.byte (\release & 0x7)
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.endm
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.macro voice_noise base_midi_key, pan, period, attack, decay, sustain, release
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_voice_noise 4, \base_midi_key, \pan, \period, \attack, \decay, \sustain, \release
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.endm
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.macro voice_noise_alt base_midi_key, pan, period, attack, decay, sustain, release
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_voice_noise 12, \base_midi_key, \pan, \period, \attack, \decay, \sustain, \release
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.endm
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.macro _voice_noise type, base_midi_key, pan, period, attack, decay, sustain, release
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.byte \type
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.byte \base_midi_key
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.if \pan != 0
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.byte (0x80 | \pan)
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.else
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.byte 0
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.endif
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.byte 0
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.byte (\period & 0x1)
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.byte 0, 0, 0
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.byte (\attack & 0x7)
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.byte (\decay & 0x7)
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.byte (\sustain & 0xF)
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.byte (\release & 0x7)
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.endm
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.macro voice_keysplit voice_group_pointer, keysplit_table_pointer
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.byte 0x40, 0, 0, 0
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.4byte \voice_group_pointer
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.4byte \keysplit_table_pointer
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.endm
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.macro voice_keysplit_all voice_group_pointer
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.byte 0x80, 0, 0, 0
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.4byte \voice_group_pointer
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.4byte 0
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.endm
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.macro cry sample
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.byte 0x20, 60, 0, 0
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.4byte \sample
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.byte 0xff, 0, 0xff, 0
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.endm
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.macro cry2 sample
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.byte 0x30, 60, 0, 0
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.4byte \sample
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.byte 0xff, 0, 0xff, 0
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.endm
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