libretro/scummvm
1
0
Fork 0
mirror of https://github.com/libretro/scummvm.git synced 2024-12-23 18:24:59 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

TSAGE: Renamed and simplified AdLib register offset lookup

Browse Source
This commit is contained in:
Torbjörn Andersson 2013-11-03 23:14:35 +01:00
parent cc55afd845
commit 401884fcc4
1 changed files with 8 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
engines/tsage/sound.cpp
View File

@ -2706,13 +2706,8 @@ SoundDriver::SoundDriver() {
const byte adlib_group_data[] = { 1, 1, 9, 1, 0xff };
const byte v440B0[9] = { 0, 1, 2, 6, 7, 8, 12, 13, 14 };
const byte v440B9[9] = { 3, 4, 5, 9, 10, 11, 15, 16, 17 };
const byte v440C2[18] = {
0, 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21
};
const byte adlib_operator1_offset[] = { 0, 1, 2, 8, 9, 10, 16, 17, 18 };
const byte adlib_operator2_offset[] = { 3, 4, 5, 11, 12, 13, 19, 20, 21 };
const byte v44134[64] = {
0, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
@ -2843,10 +2838,10 @@ void AdlibSoundDriver::playSound(const byte *channelData, int dataOffset, int pr
_v4409E[channel] = dataP + offset - _patchData;
// Set sustain/release
int portNum = v440C2[v440B0[channel]] + 0x80;
int portNum = adlib_operator1_offset[channel] + 0x80;
write(portNum, (_portContents[portNum] & 0xF0) | 0xF);
portNum = v440C2[v440B9[channel]] + 0x80;
portNum = adlib_operator2_offset[channel] + 0x80;
write(portNum, (_portContents[portNum] & 0xF0) | 0xF);
if (_channelVoiced[channel])
@ -2903,10 +2898,10 @@ void AdlibSoundDriver::updateChannelVolume(int channelNum) {
int level1 = !_v44082[channelNum] ? 63 - _v44070[channelNum] :
63 - v44134[volume * _v44070[channelNum] / 63];
int portNum = v440C2[v440B0[channelNum]] + 0x40;
int portNum = adlib_operator1_offset[channelNum] + 0x40;
write(portNum, (_portContents[portNum] & 0x80) | level1);
portNum = v440C2[v440B9[channelNum]] + 0x40;
portNum = adlib_operator2_offset[channelNum] + 0x40;
write(portNum, (_portContents[portNum] & 0x80) | level2);
}
@ -2923,7 +2918,7 @@ void AdlibSoundDriver::clearVoice(int channel) {
void AdlibSoundDriver::updateChannel(int channel) {
const byte *dataP = _patchData + _v4409E[channel];
int portOffset = v440C2[v440B0[channel]];
int portOffset = adlib_operator1_offset[channel];
int portNum = portOffset + 0x20;
int portValue = 0;
@ -2946,7 +2941,7 @@ void AdlibSoundDriver::updateChannel(int channel) {
write(0x80 + portOffset, *(dataP + 14) | (*(dataP + 13) << 4));
write(0xE0 + portOffset, (_portContents[0xE0 + portOffset] & 0xFC) | *(dataP + 15));
portOffset = v440C2[v440B9[channel]];
portOffset = adlib_operator2_offset[channel];
portNum = portOffset + 0x20;
portValue = 0;
if (*(dataP + 17))