mirror of https://github.com/ZDoom/raze-gles.git
145 lines
5.6 KiB
C
145 lines
5.6 KiB
C
/*
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* Copyright by Hannu Savolainen 1993-1996
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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// heavily modified for audiolib
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// original definitions found at http://www.cs.albany.edu/~sdc/Linux/linux-2.0/drivers/sound/opl3.h
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// it's from old Linux source but the license is pretty clearly 2-clause BSD.
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#ifndef opl3_reg_h__
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#define OPL3_opl3_reg_h__
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#define OPL3_TEST_REGISTER 0x01
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#define OPL3_ENABLE_WAVE_SELECT 0x20
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#define OPL3_TIMER1_REGISTER 0x02
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#define OPL3_TIMER2_REGISTER 0x03
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#define OPL3_TIMER_CONTROL_REGISTER 0x04 /* Left side */
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#define OPL3_IRQ_RESET 0x80
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#define OPL3_TIMER1_MASK 0x40
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#define OPL3_TIMER2_MASK 0x20
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#define OPL3_TIMER1_START 0x01
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#define OPL3_TIMER2_START 0x02
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#define OPL3_CONNECTION_SELECT_REGISTER 0x04 /* Right side */
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#define OPL3_RIGHT_4OP_0 0x01
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#define OPL3_RIGHT_4OP_1 0x02
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#define OPL3_RIGHT_4OP_2 0x04
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#define OPL3_LEFT_4OP_0 0x08
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#define OPL3_LEFT_4OP_1 0x10
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#define OPL3_LEFT_4OP_2 0x20
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#define OPL3_MODE_REGISTER 0x05 /* Right side */
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#define OPL3_ENABLE 0x01
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#define OPL3_OPL4_ENABLE 0x02
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#define OPL3_KBD_SPLIT_REGISTER 0x08 /* Left side */
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#define OPL3_COMPOSITE_SINE_WAVE_MODE 0x80 /* Don't use with OPL-3? */
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#define OPL3_KEYBOARD_SPLIT 0x40
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#define OPL3_PERCUSSION_REGISTER 0xbd /* Left side only */
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#define OPL3_TREMOLO_DEPTH 0x80
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#define OPL3_VIBRATO_DEPTH 0x40
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#define OPL3_PERCUSSION_ENABLE 0x20
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#define OPL3_BASSDRUM_ON 0x10
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#define OPL3_SNAREDRUM_ON 0x08
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#define OPL3_TOMTOM_ON 0x04
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#define OPL3_CYMBAL_ON 0x02
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#define OPL3_HIHAT_ON 0x01
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/*
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* Offsets to the register banks for operators. To get the
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* register number just add the operator offset to the bank offset
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*
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* AM/VIB/EG/KSR/Multiple (0x20 to 0x35)
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*/
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#define OPL3_AM_VIB 0x20
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#define OPL3_TREMOLO_ON 0x80
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#define OPL3_VIBRATO_ON 0x40
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#define OPL3_SUSTAIN_ON 0x20
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#define OPL3_KSR 0x10 /* Key scaling rate */
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#define OPL3_MULTIPLE_MASK 0x0f /* Frequency multiplier */
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/*
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* KSL/Total level (0x40 to 0x55)
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*/
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#define OPL3_KSL_LEVEL 0x40
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#define OPL3_KSL_MASK 0xc0 /* Envelope scaling bits */
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#define OPL3_TOTAL_LEVEL_MASK 0x3f /* Strength (volume) of OP */
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/*
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* Attack / Decay rate (0x60 to 0x75)
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*/
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#define OPL3_ATTACK_DECAY 0x60
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#define OPL3_ATTACK_MASK 0xf0
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#define OPL3_DECAY_MASK 0x0f
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/*
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* Sustain level / Release rate (0x80 to 0x95)
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*/
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#define OPL3_SUSTAIN_RELEASE 0x80
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#define OPL3_SUSTAIN_MASK 0xf0
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#define OPL3_RELEASE_MASK 0x0f
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/*
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* Wave select (0xE0 to 0xF5)
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*/
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#define OPL3_WAVE_SELECT 0xe0
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/*
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* Offsets to the register banks for voices. Just add to the
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* voice number to get the register number.
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*
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* F-Number low bits (0xA0 to 0xA8).
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*/
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#define OPL3_FNUM_LOW 0xa0
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/*
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* F-number high bits / Key on / Block (octave) (0xB0 to 0xB8)
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*/
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#define OPL3_KEYON_BLOCK 0xb0
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#define OPL3_KEYON_BIT 0x20
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#define OPL3_BLOCKNUM_MASK 0x1c
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#define OPL3_FNUM_HIGH_MASK 0x03
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/*
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* Feedback / Connection (0xc0 to 0xc8)
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*
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* These registers have two new bits when the OPL-3 mode
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* is selected. These bits controls connecting the voice
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* to the stereo channels. For 4 OP voices this bit is
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* defined in the second half of the voice (add 3 to the
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* register offset).
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*
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* For 4 OP voices the connection bit is used in the
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* both halfs (gives 4 ways to connect the operators).
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*/
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#define OPL3_FEEDBACK_CONNECTION 0xc0
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#define OPL3_FEEDBACK_MASK 0x0e /* Valid just for 1st OP of a voice */
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#define OPL3_CONNECTION_BIT 0x01
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#define OPL3_STEREO_BITS 0x30 /* OPL-3 only */
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#define OPL3_VOICE_TO_LEFT 0x10
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#define OPL3_VOICE_TO_RIGHT 0x20
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#endif // opl3_reg_h__
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