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audio: GUSsample is int16_t

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Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-id: 20170425223739.6703-20-quintela@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Juan Quintela 2017-04-26 00:37:32 +02:00 • committed by Gerd Hoffmann
parent 4bf7792aae
commit 135f5ae197
4 changed files with 7 additions and 17 deletions
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8
hw/audio/gusemu_mixer.c
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@ -28,13 +28,13 @@
#define GUSregb(position) (* (gusptr+(position)))
#define GUSregw(position) (*(uint16_t *) (gusptr+(position)))
#define GUSregd(position) (*(GUSdword *)(gusptr+(position)))
#define GUSregd(position) (*(uint16_t *)(gusptr+(position)))
#define GUSvoice(position) (*(uint16_t *)(voiceptr+(position)))
/* 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,
GUSsample *bufferpos)
int16_t *bufferpos)
{
/* note that byte registers are stored in the upper half of each voice register! */
uint8_t *gusptr;
@ -171,8 +171,8 @@ void gus_mixvoices(GUSEmuState * state, unsigned int playback_freq, unsigned int
}
/* mix samples into buffer */
*(bufferpos + 2 * sample) += (GUSsample) ((sample1 * PanningPos) >> 4); /* right */
*(bufferpos + 2 * sample + 1) += (GUSsample) ((sample1 * (15 - PanningPos)) >> 4); /* left */
*(bufferpos + 2 * sample) += (int16_t) ((sample1 * PanningPos) >> 4); /* right */
*(bufferpos + 2 * sample + 1) += (int16_t) ((sample1 * (15 - PanningPos)) >> 4); /* left */
}
/* write back voice and volume */
GUSvoice(wVSRCurrVol) = Volume32 / 32;