diff options
| -rw-r--r-- | hw/gus.c | 4 | ||||
| -rw-r--r-- | hw/gusemu.h | 4 | ||||
| -rw-r--r-- | hw/gusemu_mixer.c | 6 |
3 files changed, 8 insertions, 6 deletions
@@ -58,7 +58,7 @@ typedef struct GUSState { 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; @@ -198,7 +198,7 @@ void GUS_dmarequest (GUSEmuState *der) 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); diff --git a/hw/gusemu.h b/hw/gusemu.h index 2e9c1c0..a64300a 100644 --- a/hw/gusemu.h +++ b/hw/gusemu.h @@ -32,12 +32,14 @@ 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 @@ -91,7 +93,7 @@ void gus_dma_transferdata(GUSEmuState *state, char *dma_addr, unsigned int count /* 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 */ diff --git a/hw/gusemu_mixer.c b/hw/gusemu_mixer.c index b3b5aa5..6d8d9ce 100644 --- a/hw/gusemu_mixer.c +++ b/hw/gusemu_mixer.c @@ -33,7 +33,7 @@ /* 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; @@ -170,8 +170,8 @@ void gus_mixvoices(GUSEmuState * state, unsigned int playback_freq, unsigned int } /* 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; |