Function cdvdBlockReadTime

pcsx2/CDVD/CDVD.cpp:874–913

}

static uint cdvdBlockReadTime(CDVD_MODE_TYPE mode) noexcept
{
	// CAV Read speed is roughly 41% in the centre full speed on outer edge. I imagine it's more logarithmic than this
	if (cdvd.SpindlCtrl & CDVD_SPINDLE_CAV)
	{
		int numSectors = 0;
		int offset = 0;

		// Sector counts are taken from google for Single layer, Dual layer DVD's and for 700MB CD's
		switch (cdvd.DiscType)
		{
			case CDVD_TYPE_DETCTDVDS:
			case CDVD_TYPE_PS2DVD:
			case CDVD_TYPE_DETCTDVDD:
				numSectors = 2298496;
				u32 layer1Start;
				s32 dualType;

				// Layer 1 needs an offset as it goes back to the middle of the disc
				cdvdReadDvdDualInfo(&dualType, &layer1Start);
				if (cdvd.SeekToSector >= layer1Start)
					offset = layer1Start;
				break;
			default: // Pretty much every CD format
				numSectors = 360000;
				break;
		}

		// 0.40f is the "base" inner track speed.
		const float sectorSpeed = ((static_cast<float>(cdvd.SeekToSector - offset) / static_cast<float>(numSectors)) * 0.60f) + 0.40f;
		const float cycles = static_cast<float>(PSXCLK) / (static_cast<float>(((mode == MODE_CDROM) ? CD_SECTORS_PERSECOND : DVD_SECTORS_PERSECOND) * cdvd.Speed) * sectorSpeed);

		return static_cast<int>(cycles);
	}

	// CLV Read Speed is constant
	const float cycles = static_cast<float>(PSXCLK) / static_cast<float>(((mode == MODE_CDROM) ? CD_SECTORS_PERSECOND : DVD_SECTORS_PERSECOND) * std::min(static_cast<float>(cdvd.Speed), (mode == MODE_CDROM) ? 10.3f : 1.6f));

	return static_cast<int>(cycles);
}

void cdvdReset()
{