diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2013-03-01 13:59:19 +0100 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-04-08 18:13:12 +0200 |
commit | 49ab747f668f421138d5b40d83fa279c4c5e278d (patch) | |
tree | 943225a04eac885aed038731adf058f2250a2f40 /hw/gusemu_mixer.c | |
parent | ce3b494cb504f96992f2d37ebc8f56deed202b06 (diff) |
hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/gusemu_mixer.c')
-rw-r--r-- | hw/gusemu_mixer.c | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/hw/gusemu_mixer.c b/hw/gusemu_mixer.c deleted file mode 100644 index 816c58a7ed..0000000000 --- a/hw/gusemu_mixer.c +++ /dev/null @@ -1,240 +0,0 @@ -/* - * GUSEMU32 - mixing engine (similar to Interwave GF1 compatibility) - * - * Copyright (C) 2000-2007 Tibor "TS" Schütz - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "hw/gusemu.h" -#include "hw/gustate.h" - -#define GUSregb(position) (* (gusptr+(position))) -#define GUSregw(position) (*(GUSword *) (gusptr+(position))) -#define GUSregd(position) (*(GUSdword *)(gusptr+(position))) - -#define GUSvoice(position) (*(GUSword *)(voiceptr+(position))) - -/* samples are always 16bit stereo (4 bytes each, first right then left interleaved) */ -void gus_mixvoices(GUSEmuState * state, unsigned int playback_freq, unsigned int numsamples, - GUSsample *bufferpos) -{ - /* note that byte registers are stored in the upper half of each voice register! */ - GUSbyte *gusptr; - int Voice; - GUSword *voiceptr; - - unsigned int count; - for (count = 0; count < numsamples * 2; count++) - *(bufferpos + count) = 0; /* clear */ - - gusptr = state->gusdatapos; - voiceptr = (GUSword *) gusptr; - if (!(GUSregb(GUS4cReset) & 0x01)) /* reset flag active? */ - return; - - for (Voice = 0; Voice <= (GUSregb(NumVoices) & 31); Voice++) - { - if (GUSvoice(wVSRControl) & 0x200) - GUSvoice(wVSRControl) |= 0x100; /* voice stop request */ - if (GUSvoice(wVSRVolRampControl) & 0x200) - GUSvoice(wVSRVolRampControl) |= 0x100; /* Volume ramp stop request */ - if (!(GUSvoice(wVSRControl) & GUSvoice(wVSRVolRampControl) & 0x100)) /* neither voice nor volume calculation active - save some time here ;) */ - { - unsigned int sample; - - unsigned int LoopStart = (GUSvoice(wVSRLoopStartHi) << 16) | GUSvoice(wVSRLoopStartLo); /* 23.9 format */ - unsigned int LoopEnd = (GUSvoice(wVSRLoopEndHi) << 16) | GUSvoice(wVSRLoopEndLo); /* 23.9 format */ - unsigned int CurrPos = (GUSvoice(wVSRCurrPosHi) << 16) | GUSvoice(wVSRCurrPosLo); /* 23.9 format */ - int VoiceIncrement = ((((unsigned long) GUSvoice(wVSRFreq) * 44100) / playback_freq) * (14 >> 1)) / - ((GUSregb(NumVoices) & 31) + 1); /* 6.10 increment/frame to 23.9 increment/sample */ - - int PanningPos = (GUSvoice(wVSRPanning) >> 8) & 0xf; - - unsigned int Volume32 = 32 * GUSvoice(wVSRCurrVol); /* 32 times larger than original gus for maintaining precision while ramping */ - unsigned int StartVol32 = (GUSvoice(wVSRVolRampStartVol) & 0xff00) * 32; - unsigned int EndVol32 = (GUSvoice(wVSRVolRampEndVol) & 0xff00) * 32; - int VolumeIncrement32 = (32 * 16 * (GUSvoice(wVSRVolRampRate) & 0x3f00) >> 8) >> ((((GUSvoice(wVSRVolRampRate) & 0xc000) >> 8) >> 6) * 3); /* including 1/8/64/512 volume speed divisor */ - VolumeIncrement32 = (((VolumeIncrement32 * 44100 / 2) / playback_freq) * 14) / ((GUSregb(NumVoices) & 31) + 1); /* adjust ramping speed to playback speed */ - - if (GUSvoice(wVSRControl) & 0x4000) - VoiceIncrement = -VoiceIncrement; /* reverse playback */ - if (GUSvoice(wVSRVolRampControl) & 0x4000) - VolumeIncrement32 = -VolumeIncrement32; /* reverse ramping */ - - for (sample = 0; sample < numsamples; sample++) - { - int sample1, sample2, Volume; - if (GUSvoice(wVSRControl) & 0x400) /* 16bit */ - { - int offset = ((CurrPos >> 9) & 0xc0000) + (((CurrPos >> 9) & 0x1ffff) << 1); - GUSchar *adr; - adr = (GUSchar *) state->himemaddr + offset; - sample1 = (*adr & 0xff) + (*(adr + 1) * 256); - sample2 = (*(adr + 2) & 0xff) + (*(adr + 2 + 1) * 256); - } - else /* 8bit */ - { - int offset = (CurrPos >> 9) & 0xfffff; - GUSchar *adr; - adr = (GUSchar *) state->himemaddr + offset; - sample1 = (*adr) * 256; - sample2 = (*(adr + 1)) * 256; - } - - Volume = ((((Volume32 >> (4 + 5)) & 0xff) + 256) << (Volume32 >> ((4 + 8) + 5))) / 512; /* semi-logarithmic volume, +5 due to additional precision */ - sample1 = (((sample1 * Volume) >> 16) * (512 - (CurrPos % 512))) / 512; - sample2 = (((sample2 * Volume) >> 16) * (CurrPos % 512)) / 512; - sample1 += sample2; - - if (!(GUSvoice(wVSRVolRampControl) & 0x100)) - { - Volume32 += VolumeIncrement32; - if ((GUSvoice(wVSRVolRampControl) & 0x4000) ? (Volume32 <= StartVol32) : (Volume32 >= EndVol32)) /* ramp up boundary cross */ - { - if (GUSvoice(wVSRVolRampControl) & 0x2000) - GUSvoice(wVSRVolRampControl) |= 0x8000; /* volramp IRQ enabled? -> IRQ wait flag */ - if (GUSvoice(wVSRVolRampControl) & 0x800) /* loop enabled */ - { - if (GUSvoice(wVSRVolRampControl) & 0x1000) /* bidir. loop */ - { - GUSvoice(wVSRVolRampControl) ^= 0x4000; /* toggle dir */ - VolumeIncrement32 = -VolumeIncrement32; - } - else - Volume32 = (GUSvoice(wVSRVolRampControl) & 0x4000) ? EndVol32 : StartVol32; /* unidir. loop ramp */ - } - else - { - GUSvoice(wVSRVolRampControl) |= 0x100; - Volume32 = - (GUSvoice(wVSRVolRampControl) & 0x4000) ? StartVol32 : EndVol32; - } - } - } - if ((GUSvoice(wVSRVolRampControl) & 0xa000) == 0xa000) /* volramp IRQ set and enabled? */ - { - GUSregd(voicevolrampirq) |= 1 << Voice; /* set irq slot */ - } - else - { - GUSregd(voicevolrampirq) &= (~(1 << Voice)); /* clear irq slot */ - GUSvoice(wVSRVolRampControl) &= 0x7f00; - } - - if (!(GUSvoice(wVSRControl) & 0x100)) - { - CurrPos += VoiceIncrement; - if ((GUSvoice(wVSRControl) & 0x4000) ? (CurrPos <= LoopStart) : (CurrPos >= LoopEnd)) /* playback boundary cross */ - { - if (GUSvoice(wVSRControl) & 0x2000) - GUSvoice(wVSRControl) |= 0x8000; /* voice IRQ enabled -> IRQ wait flag */ - if (GUSvoice(wVSRControl) & 0x800) /* loop enabled */ - { - if (GUSvoice(wVSRControl) & 0x1000) /* pingpong loop */ - { - GUSvoice(wVSRControl) ^= 0x4000; /* toggle dir */ - VoiceIncrement = -VoiceIncrement; - } - else - CurrPos = (GUSvoice(wVSRControl) & 0x4000) ? LoopEnd : LoopStart; /* unidir. loop */ - } - else if (!(GUSvoice(wVSRVolRampControl) & 0x400)) - GUSvoice(wVSRControl) |= 0x100; /* loop disabled, rollover check */ - } - } - if ((GUSvoice(wVSRControl) & 0xa000) == 0xa000) /* wavetable IRQ set and enabled? */ - { - GUSregd(voicewavetableirq) |= 1 << Voice; /* set irq slot */ - } - else - { - GUSregd(voicewavetableirq) &= (~(1 << Voice)); /* clear irq slot */ - GUSvoice(wVSRControl) &= 0x7f00; - } - - /* mix samples into buffer */ - *(bufferpos + 2 * sample) += (GUSsample) ((sample1 * PanningPos) >> 4); /* right */ - *(bufferpos + 2 * sample + 1) += (GUSsample) ((sample1 * (15 - PanningPos)) >> 4); /* left */ - } - /* write back voice and volume */ - GUSvoice(wVSRCurrVol) = Volume32 / 32; - GUSvoice(wVSRCurrPosHi) = CurrPos >> 16; - GUSvoice(wVSRCurrPosLo) = CurrPos & 0xffff; - } - voiceptr += 16; /* next voice */ - } -} - -void gus_irqgen(GUSEmuState * state, unsigned int elapsed_time) -/* time given in microseconds */ -{ - int requestedIRQs = 0; - GUSbyte *gusptr; - gusptr = state->gusdatapos; - if (GUSregb(TimerDataReg2x9) & 1) /* start timer 1 (80us decrement rate) */ - { - unsigned int timer1fraction = state->timer1fraction; - int newtimerirqs; - newtimerirqs = (elapsed_time + timer1fraction) / (80 * (256 - GUSregb(GUS46Counter1))); - state->timer1fraction = (elapsed_time + timer1fraction) % (80 * (256 - GUSregb(GUS46Counter1))); - if (newtimerirqs) - { - if (!(GUSregb(TimerDataReg2x9) & 0x40)) - GUSregb(TimerStatus2x8) |= 0xc0; /* maskable bits */ - if (GUSregb(GUS45TimerCtrl) & 4) /* timer1 irq enable */ - { - GUSregb(TimerStatus2x8) |= 4; /* nonmaskable bit */ - GUSregb(IRQStatReg2x6) |= 4; /* timer 1 irq pending */ - GUSregw(TimerIRQs) += newtimerirqs; - requestedIRQs += newtimerirqs; - } - } - } - if (GUSregb(TimerDataReg2x9) & 2) /* start timer 2 (320us decrement rate) */ - { - unsigned int timer2fraction = state->timer2fraction; - int newtimerirqs; - newtimerirqs = (elapsed_time + timer2fraction) / (320 * (256 - GUSregb(GUS47Counter2))); - state->timer2fraction = (elapsed_time + timer2fraction) % (320 * (256 - GUSregb(GUS47Counter2))); - if (newtimerirqs) - { - if (!(GUSregb(TimerDataReg2x9) & 0x20)) - GUSregb(TimerStatus2x8) |= 0xa0; /* maskable bits */ - if (GUSregb(GUS45TimerCtrl) & 8) /* timer2 irq enable */ - { - GUSregb(TimerStatus2x8) |= 2; /* nonmaskable bit */ - GUSregb(IRQStatReg2x6) |= 8; /* timer 2 irq pending */ - GUSregw(TimerIRQs) += newtimerirqs; - requestedIRQs += newtimerirqs; - } - } - } - if (GUSregb(GUS4cReset) & 0x4) /* synth IRQ enable */ - { - if (GUSregd(voicewavetableirq)) - GUSregb(IRQStatReg2x6) |= 0x20; - if (GUSregd(voicevolrampirq)) - GUSregb(IRQStatReg2x6) |= 0x40; - } - if ((!requestedIRQs) && GUSregb(IRQStatReg2x6)) - requestedIRQs++; - if (GUSregb(IRQStatReg2x6)) - GUSregw(BusyTimerIRQs) = GUS_irqrequest(state, state->gusirq, requestedIRQs); -} |