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/third_party/backends/backend/
H A Dplustek-usbshading.c670 double dRatio, dAmp; in usb_GetNewGain() local
677 dAmp = 0.93 + 0.067 * dev->usbDev.a_bRegs[0x3b+channel]; in usb_GetNewGain()
679 if((m_dwIdealGain / (wMax / dAmp)) < 3) { in usb_GetNewGain()
681 dRatio = ((double) m_dwIdealGain * dAmp / wMax - 0.93) / 0.067; in usb_GetNewGain()
685 dwInc = (u_long)((0.93 + ceil (dRatio) * 0.067) * wMax / dAmp); in usb_GetNewGain()
686 dwDec = (u_long)((0.93 + floor (dRatio) * 0.067) * wMax / dAmp); in usb_GetNewGain()
696 dRatio = m_dwIdealGain / (wMax / dAmp); in usb_GetNewGain()
697 dAmp = floor((dRatio / 3 - 0.93)/0.067); in usb_GetNewGain()
699 if( dAmp > 31 ) in usb_GetNewGain()
700 dAmp in usb_GetNewGain()
2197 usb_ResizeWhiteShading( double dAmp, u_short *pwShading, int iGain ) usb_ResizeWhiteShading() argument
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