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bsnes/sfc/dsp/envelope.cpp

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First version split into asnes and bsnes.
2010-08-09 13:28:56 +00:00
#ifdef DSP_CPP
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
void DSP::envelope_run(voice_t& v) {
First version split into asnes and bsnes.
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int env = v.env;
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
if(v.env_mode == env_release) { //60%
First version split into asnes and bsnes.
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env -= 0x8;
if(env < 0) env = 0;
v.env = env;
return;
}
int rate;
int env_data = VREG(adsr1);
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
if(state.t_adsr0 & 0x80) { //99% ADSR
if(v.env_mode >= env_decay) { //99%
First version split into asnes and bsnes.
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env--;
env -= env >> 8;
rate = env_data & 0x1f;
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
if(v.env_mode == env_decay) { //1%
First version split into asnes and bsnes.
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rate = ((state.t_adsr0 >> 3) & 0x0e) + 0x10;
}
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
} else { //env_attack
First version split into asnes and bsnes.
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rate = ((state.t_adsr0 & 0x0f) << 1) + 1;
env += rate < 31 ? 0x20 : 0x400;
}
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
} else { //GAIN
First version split into asnes and bsnes.
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env_data = VREG(gain);
int mode = env_data >> 5;
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
if(mode < 4) { //direct
First version split into asnes and bsnes.
2010-08-09 13:28:56 +00:00
env = env_data << 4;
rate = 31;
} else {
rate = env_data & 0x1f;
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
if(mode == 4) { //4: linear decrease
First version split into asnes and bsnes.
2010-08-09 13:28:56 +00:00
env -= 0x20;
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
} else if(mode < 6) { //5: exponential decrease
First version split into asnes and bsnes.
2010-08-09 13:28:56 +00:00
env--;
env -= env >> 8;
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
} else { //6, 7: linear increase
First version split into asnes and bsnes.
2010-08-09 13:28:56 +00:00
env += 0x20;
if(mode > 6 && (unsigned)v.hidden_env >= 0x600) {
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
env += 0x8 - 0x20; //7: two-slope linear increase
First version split into asnes and bsnes.
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}
}
}
}
//sustain level
if((env >> 8) == (env_data >> 5) && v.env_mode == env_decay) v.env_mode = env_sustain;
v.hidden_env = env;
//unsigned cast because linear decrease underflowing also triggers this
if((unsigned)env > 0x7ff) {
env = (env < 0 ? 0 : 0x7ff);
if(v.env_mode == env_attack) v.env_mode = env_decay;
}
if(counter_poll(rate) == true) v.env = env;
}
#endif