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-rw-r--r--sound/mods/rjp1.cpp175
1 files changed, 118 insertions, 57 deletions
diff --git a/sound/mods/rjp1.cpp b/sound/mods/rjp1.cpp
index 59b8833607..0eb6b0d16b 100644
--- a/sound/mods/rjp1.cpp
+++ b/sound/mods/rjp1.cpp
@@ -70,6 +70,7 @@ struct Rjp1Channel {
uint16 len;
uint16 repeatPos;
uint16 repeatLen;
+ bool isSfx;
};
class Rjp1 : public Paula {
@@ -90,6 +91,7 @@ public:
bool load(Common::SeekableReadStream *songData, Common::SeekableReadStream *instrumentsData);
void unload();
+ void startPattern(int ch, int pat);
void startSong(int song);
protected:
@@ -98,6 +100,8 @@ protected:
void turnOffChannel(Rjp1Channel *channel);
void playChannel(Rjp1Channel *channel);
void turnOnChannel(Rjp1Channel *channel);
+ bool executeSfxSequenceOp(Rjp1Channel *channel, uint8 code, const uint8 *&p);
+ bool executeSongSequenceOp(Rjp1Channel *channel, uint8 code, const uint8 *&p);
void playSongSequence(Rjp1Channel *channel);
void modulateVolume(Rjp1Channel *channel);
void modulatePeriod(Rjp1Channel *channel);
@@ -186,6 +190,18 @@ void Rjp1::unload() {
memset(_channelsTable, 0, sizeof(_channelsTable));
}
+void Rjp1::startPattern(int ch, int pat) {
+ Rjp1Channel *channel = &_channelsTable[ch];
+ _vars.activeChannelsMask |= 1 << ch;
+ channel->sequenceData = READ_BE_UINT32(_vars.songData[4] + pat * 4) + _vars.songData[6];
+ channel->loopSeqCount = 6;
+ channel->loopSeqCur = channel->loopSeq2Cur = 1;
+ channel->active = true;
+ channel->isSfx = true;
+ // "start" Paula audiostream
+ startPaula();
+}
+
void Rjp1::startSong(int song) {
if (song == 0 || song >= _vars.subsongsCount) {
warning("Invalid subsong number %d, defaulting to 1", song);
@@ -241,6 +257,98 @@ void Rjp1::turnOnChannel(Rjp1Channel *channel) {
}
}
+bool Rjp1::executeSfxSequenceOp(Rjp1Channel *channel, uint8 code, const uint8 *&p) {
+ bool loop = true;
+ switch (code & 7) {
+ case 0:
+ _vars.activeChannelsMask &= ~(1 << _vars.currentChannel);
+ loop = false;
+ stopPaula();
+ break;
+ case 1:
+ setRelease(channel);
+ loop = false;
+ break;
+ case 2:
+ channel->loopSeqCount = *p++;
+ break;
+ case 3:
+ channel->loopSeq2Count = *p++;
+ break;
+ case 4:
+ code = *p++;
+ if (code != 0) {
+ setupInstrument(channel, code);
+ }
+ break;
+ case 7:
+ loop = false;
+ break;
+ }
+ return loop;
+}
+
+bool Rjp1::executeSongSequenceOp(Rjp1Channel *channel, uint8 code, const uint8 *&p) {
+ bool loop = true;
+ const uint8 *offs;
+ switch (code & 7) {
+ case 0:
+ offs = channel->sequenceOffsets;
+ channel->loopSeq2Count = 1;
+ while (1) {
+ code = *offs++;
+ if (code != 0) {
+ channel->sequenceOffsets = offs;
+ p = READ_BE_UINT32(_vars.songData[4] + code * 4) + _vars.songData[6];
+ break;
+ } else {
+ code = offs[0];
+ if (code == 0) {
+ p = 0;
+ channel->active = false;
+ _vars.activeChannelsMask &= ~(1 << _vars.currentChannel);
+ loop = false;
+ break;
+ } else if (code & 0x80) {
+ code = offs[1];
+ offs = READ_BE_UINT32(_vars.songData[3] + code * 4) + _vars.songData[5];
+ } else {
+ offs -= code;
+ }
+ }
+ }
+ break;
+ case 1:
+ setRelease(channel);
+ loop = false;
+ break;
+ case 2:
+ channel->loopSeqCount = *p++;
+ break;
+ case 3:
+ channel->loopSeq2Count = *p++;
+ break;
+ case 4:
+ code = *p++;
+ if (code != 0) {
+ setupInstrument(channel, code);
+ }
+ break;
+ case 5:
+ channel->volumeScale = *p++;
+ break;
+ case 6:
+ channel->freqStep = *p++;
+ channel->freqInc = READ_BE_UINT32(p); p += 4;
+ channel->freqInit = 0;
+ break;
+ case 7:
+ loop = false;
+ break;
+ }
+ return loop;
+}
+
void Rjp1::playSongSequence(Rjp1Channel *channel) {
const uint8 *p = channel->sequenceData;
--channel->loopSeqCur;
@@ -251,61 +359,10 @@ void Rjp1::playSongSequence(Rjp1Channel *channel) {
do {
uint8 code = *p++;
if (code & 0x80) {
- const uint8 *offs;
- switch (code & 7) {
- case 0:
- offs = channel->sequenceOffsets;
- channel->loopSeq2Count = 1;
- while (1) {
- code = *offs++;
- if (code != 0) {
- channel->sequenceOffsets = offs;
- p = READ_BE_UINT32(_vars.songData[4] + code * 4) + _vars.songData[6];
- break;
- } else {
- code = offs[0];
- if (code == 0) {
- p = 0;
- channel->active = false;
- _vars.activeChannelsMask &= ~(1 << _vars.currentChannel);
- loop = false;
- break;
- } else if (code & 0x80) {
- code = offs[1];
- offs = READ_BE_UINT32(_vars.songData[3] + code * 4) + _vars.songData[5];
- } else {
- offs -= code;
- }
- }
- }
- break;
- case 1:
- setRelease(channel);
- loop = false;
- break;
- case 2:
- channel->loopSeqCount = *p++;
- break;
- case 3:
- channel->loopSeq2Count = *p++;
- break;
- case 4:
- code = *p++;
- if (code != 0) {
- setupInstrument(channel, code);
- }
- break;
- case 5:
- channel->volumeScale = *p++;
- break;
- case 6:
- channel->freqStep = *p++;
- channel->freqInc = READ_BE_UINT32(p); p += 4;
- channel->freqInit = 0;
- break;
- case 7:
- loop = false;
- break;
+ if (channel->isSfx) {
+ loop = executeSfxSequenceOp(channel, code, p);
+ } else {
+ loop = executeSongSequenceOp(channel, code, p);
}
} else {
code >>= 1;
@@ -507,10 +564,14 @@ const int16 Rjp1::_periodsTable[] = {
const int Rjp1::_periodsCount = ARRAYSIZE(_periodsTable);
-AudioStream *makeRjp1Stream(Common::SeekableReadStream *songData, Common::SeekableReadStream *instrumentsData, int song, int rate, bool stereo) {
+AudioStream *makeRjp1Stream(Common::SeekableReadStream *songData, Common::SeekableReadStream *instrumentsData, int num, int rate, bool stereo) {
Rjp1 *stream = new Rjp1(rate, stereo);
if (stream->load(songData, instrumentsData)) {
- stream->startSong(song);
+ if (num < 0) {
+ stream->startPattern(3, -num);
+ } else {
+ stream->startSong(num);
+ }
return stream;
}
delete stream;
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 01:46:31 +0000