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#include "dolphin/sipriv.h"
#include "dolphin/vi.h"
#pragma dont_inline on
static u32 SamplingRate;
typedef struct XY {
u16 line;
u8 count;
} XY;
static XY XYNTSC[12] = {
{263 - 17, 2}, {15, 18}, {30, 9}, {44, 6}, {52, 5}, {65, 4},
{87, 3}, {87, 3}, {87, 3}, {131, 2}, {131, 2}, {131, 2},
};
static XY XYPAL[12] = {
{313 - 17, 2}, {15, 21}, {29, 11}, {45, 7}, {52, 6}, {63, 5},
{78, 4}, {104, 3}, {104, 3}, {104, 3}, {104, 3}, {156, 2},
};
void SISetSamplingRate(u32 msec) {
XY* xy;
BOOL enabled;
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;
}
SISetXY((__VIRegs[54] & 1 ? 2u : 1u) * xy[msec].line, xy[msec].count);
OSRestoreInterrupts(enabled);
}
void SIRefreshSamplingRate() { SISetSamplingRate(SamplingRate); }
#pragma dont_inline reset
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