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-rw-r--r--sound/mods/paula.h75
1 files changed, 56 insertions, 19 deletions
diff --git a/sound/mods/paula.h b/sound/mods/paula.h
index 4bf0b8cec2..28fed004a7 100644
--- a/sound/mods/paula.h
+++ b/sound/mods/paula.h
@@ -45,10 +45,6 @@ public:
bool playing() const { return _playing; }
void setInterruptFreq(int freq) { _curInt = _intFreq = freq; }
- void setPanning(byte voice, byte panning) {
- assert(voice < NUM_VOICES);
- _voice[voice].panning = panning;
- }
void clearVoice(byte voice);
void clearVoices() { for (int i = 0; i < NUM_VOICES; ++i) clearVoice(i); }
void startPlay(void) { _playing = true; }
@@ -69,27 +65,68 @@ protected:
uint32 lengthRepeat;
int16 period;
byte volume;
- double offset;
+ double offset; // FIXME: Avoid floating point at all cost!!!
byte panning; // For stereo mixing: 0 = far left, 255 = far right
- } _voice[NUM_VOICES];
+ };
- int _rate;
- int _intFreq;
- int _curInt;
- bool _stereo;
bool _end;
- bool _playing;
Common::Mutex _mutex;
- void mix(int16 *&buf, int8 data, int voice) {
- const int32 tmp = ((int32) data) * _voice[voice].volume;
- if (_stereo) {
- *buf++ += (tmp * (255 - _voice[voice].panning)) >> 7;
- *buf++ += (tmp * (_voice[voice].panning)) >> 7;
- } else
- *buf++ += tmp;
+ virtual void interrupt(void) = 0;
+
+ void startPaula() {
+ _playing = true;
+ _end = false;
+ }
+
+ void stopPaula() {
+ _playing = false;
+ _end = true;
+ }
+
+ void setChannelPanning(byte channel, byte panning) {
+ assert(channel < NUM_VOICES);
+ _voice[channel].panning = panning;
+ }
+
+ void setChannelPeriod(byte channel, int16 period) {
+ assert(channel < NUM_VOICES);
+ _voice[channel].period = period;
+ }
+
+ void setChannelVolume(byte channel, byte volume) {
+ assert(channel < NUM_VOICES);
+ _voice[channel].volume = volume;
}
- virtual void interrupt(void) {}
+
+ void setChannelData(uint8 channel, const int8 *data, const int8 *dataRepeat, uint32 length, uint32 lengthRepeat, double offset = 0.0) {
+ assert(channel < NUM_VOICES);
+ Channel &ch = _voice[channel];
+ ch.data = data;
+ ch.dataRepeat = dataRepeat;
+ ch.length = length;
+ ch.lengthRepeat = lengthRepeat;
+ ch.offset = offset;
+ }
+
+ void setChannelOffset(byte channel, double offset) {
+ assert(channel < NUM_VOICES);
+ _voice[channel].offset = offset;
+ }
+
+ double getChannelOffset(byte channel) {
+ assert(channel < NUM_VOICES);
+ return _voice[channel].offset;
+ }
+
+private:
+ Channel _voice[NUM_VOICES];
+
+ const bool _stereo;
+ const int _rate;
+ int _intFreq;
+ int _curInt;
+ bool _playing;
};
} // End of namespace Audio