QEMUSoundCard card;
int freq;
int pos, left, shift, irqs;
- uint16_t *mixbuf;
+ GUSsample *mixbuf;
uint8_t himem[1024 * 1024 + 32 + 4096];
int samples;
SWVoiceOut *voice;
int GUS_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
{
GUSState *s = opaque;
- int8_t tmpbuf[4096];
+ char tmpbuf[4096];
int pos = dma_pos, mode, left = dma_len - dma_pos;
ldebug ("read DMA %#x %d\n", dma_pos, dma_len);
typedef unsigned short GUSword;
typedef unsigned int GUSdword;
typedef signed char GUSchar;
+ typedef signed short GUSsample;
#else
#include <stdint.h>
typedef int8_t GUSchar;
typedef uint8_t GUSbyte;
typedef uint16_t GUSword;
typedef uint32_t GUSdword;
+ typedef int16_t GUSsample;
#endif
typedef struct _GUSEmuState
/* If the interrupts are asynchronous, it may be needed to use a separate thread mixing into a temporary */
/* audio buffer in order to avoid quality loss caused by large numsamples and elapsed_time values. */
-void gus_mixvoices(GUSEmuState *state, unsigned int playback_freq, unsigned int numsamples, short *bufferpos);
+void gus_mixvoices(GUSEmuState *state, unsigned int playback_freq, unsigned int numsamples, GUSsample *bufferpos);
/* recommended range: 10 < numsamples < 100 */
/* lower values may result in increased rounding error, higher values often cause audible timing delays */
/* 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,
- short *bufferpos)
+ GUSsample *bufferpos)
{
/* note that byte registers are stored in the upper half of each voice register! */
GUSbyte *gusptr;
}
/* mix samples into buffer */
- *(bufferpos + 2 * sample) += (short) ((sample1 * PanningPos) >> 4); /* right */
- *(bufferpos + 2 * sample + 1) += (short) ((sample1 * (15 - PanningPos)) >> 4); /* left */
+ *(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;