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#include "dolphin/si/SIBios.h"
#include "dolphin/os/OS.h"
#include "dolphin/vi/vi.h"
#define LATENCY 8
static u32 SamplingRate = 0;
typedef struct XY {
u16 line;
u8 count;
} XY;
static XY XYNTSC[12] = {
{0x00F6, 0x02},
{0x000F, 0x12},
{0x001E, 0x09},
{0x002C, 0x06},
{0x0034, 0x05},
{0x0041, 0x04},
{0x0057, 0x03},
{0x0057, 0x03},
{0x0057, 0x03},
{0x0083, 0x02},
{0x0083, 0x02},
{0x0083, 0x02},
};
static XY XYPAL[12] = {
{0x0128, 0x02},
{0x000F, 0x15},
{0x001D, 0x0B},
{0x002D, 0x07},
{0x0034, 0x06},
{0x003F, 0x05},
{0x004E, 0x04},
{0x0068, 0x03},
{0x0068, 0x03},
{0x0068, 0x03},
{0x0068, 0x03},
{0x009C, 0x02},
};
void SISetSamplingRate(u32 msec) {
XY* xy;
BOOL progressive;
BOOL enabled;
ASSERTMSGLINE(377, 0 <= msec && msec <= 11, "SISetSamplingRate(): out of rage (0 <= msec <= 11)");
if (msec > 11) {
msec = 11;
}
enabled = OSDisableInterrupts();
SamplingRate = msec;
switch (VIGetTvFormat()) {
case VI_NTSC:
case VI_MPAL:
case VI_EURGB60:
xy = XYNTSC;
break;
case VI_PAL:
xy = XYPAL;
break;
default:
OSReport("SISetSamplingRate: unknown TV format. Use default.");
msec = 0;
xy = XYNTSC;
break;
}
progressive = __VIRegs[54] & 1;
SISetXY((progressive ? 2 : 1) * xy[msec].line, xy[msec].count);
OSRestoreInterrupts(enabled);
}
void SIRefreshSamplingRate(void) {
SISetSamplingRate(SamplingRate);
}
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