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xbox 360 port: use full cpu speed, sleep unused cpu cores, add sound (which isn't that great yet)

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tmbinc 2009-09-04 02:45:14 +00:00
parent 1167aaf8a9
commit e969ce7fad
2 changed files with 55 additions and 1 deletions
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50
source/xenon/main.cpp
View File

@ -20,6 +20,8 @@
#include <diskio/diskio.h>
#include <fat/fat.h>
#include <xenos/xenos.h>
#include <xenon_sound/sound.h>
#include <xenon_soc/xenon_power.h>
//#include "smc.h"
@ -48,6 +50,11 @@ extern "C" {
};
static inline uint32_t bswap_32(uint32_t t)
{
return ((t & 0xFF) << 24) | ((t & 0xFF00) << 8) | ((t & 0xFF0000) >> 8) | ((t & 0xFF000000) >> 24);
}
void
emulate ()
{
@ -90,6 +97,40 @@ emulate ()
ConfigRequested = 0;
break;
}
/* this all isn't that great... */
int sample_rate = 48000 * 2;
int samples_per_frame = Settings.PAL ? sample_rate / 50 : sample_rate / 60;
int samples_guard = 16384;
if (xenon_sound_get_unplayed() < samples_guard)
{
so.samples_mixed_so_far = so.play_position = 0;
unsigned char buffer[2048];
unsigned char out[2048];
#if 0
int req_samples = xenon_sound_get_unplayed();
if ((req_samples + samples_per_frame) < samples_guard)
req_samples = samples_guard + samples_per_frame;
else
req_samples = samples_per_frame;
#endif
int req_samples = samples_per_frame;
S9xMixSamples(buffer, req_samples);
int i;
for (i = 0; i < req_samples * 2; i += 4)
*(int*)(buffer + i) = bswap_32(*(int*)(buffer + i));
xenon_sound_submit(buffer, req_samples * 2);
}
} // main loop
}
@ -210,6 +251,15 @@ int main(void)
extern void xenos_init();
xenos_init();
console_init();
xenon_thread_startup();
xenon_make_it_faster(XENON_SPEED_FULL);
xenon_sleep_thread(1);
xenon_sleep_thread(2);
xenon_sleep_thread(3);
xenon_sleep_thread(4);
xenon_sleep_thread(5);
printf("SNES9x GX\n");
kmem_init();

6
source/xenon/s9xsupport.cpp
View File

@ -16,6 +16,7 @@
#include <time/time.h>
#include <ppc/timebase.h>
#include <xenon_sound/sound.h>
int FrameTimer, timerstyle = 1;
unsigned long long prev, now;
@ -105,7 +106,7 @@ void S9xToggleSoundChannel(int c)
bool8 S9xOpenSoundDevice(int mode, bool8 stereo, int buffer_size)
{
so.stereo = TRUE;
so.playback_rate = 32000;
so.playback_rate = 48000;
so.sixteen_bit = TRUE;
so.encoded = 0;
so.buffer_size = 4096;
@ -113,6 +114,9 @@ bool8 S9xOpenSoundDevice(int mode, bool8 stereo, int buffer_size)
S9xSetPlaybackRate(so.playback_rate);
// init audio
xenon_sound_init();
return TRUE;
}