From d83a98f4ce9cfa908f5c54bbd70f03eec07e7553 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:45 -0800 Subject: auto import from //depot/cupcake/@135843 --- camera/libcameraservice/FakeCamera.cpp | 404 --------------------------------- 1 file changed, 404 deletions(-) delete mode 100644 camera/libcameraservice/FakeCamera.cpp (limited to 'camera/libcameraservice/FakeCamera.cpp') diff --git a/camera/libcameraservice/FakeCamera.cpp b/camera/libcameraservice/FakeCamera.cpp deleted file mode 100644 index 3592eab..0000000 --- a/camera/libcameraservice/FakeCamera.cpp +++ /dev/null @@ -1,404 +0,0 @@ -#define LOG_TAG "FakeCamera" -#include - -#include -#include -#include "FakeCamera.h" - -namespace android { - -static int tables_initialized = 0; -uint8_t *gYTable, *gCbTable, *gCrTable; - -static int -clamp(int x) -{ - if (x > 255) return 255; - if (x < 0) return 0; - return x; -} - -/* the equation used by the video code to translate YUV to RGB looks like this - * - * Y = (Y0 - 16)*k0 - * Cb = Cb0 - 128 - * Cr = Cr0 - 128 - * - * G = ( Y - k1*Cr - k2*Cb ) - * R = ( Y + k3*Cr ) - * B = ( Y + k4*Cb ) - * - */ - -static const double k0 = 1.164; -static const double k1 = 0.813; -static const double k2 = 0.391; -static const double k3 = 1.596; -static const double k4 = 2.018; - -/* let's try to extract the value of Y - * - * G + k1/k3*R + k2/k4*B = Y*( 1 + k1/k3 + k2/k4 ) - * - * Y = ( G + k1/k3*R + k2/k4*B ) / (1 + k1/k3 + k2/k4) - * Y0 = ( G0 + k1/k3*R0 + k2/k4*B0 ) / ((1 + k1/k3 + k2/k4)*k0) + 16 - * - * let define: - * kYr = k1/k3 - * kYb = k2/k4 - * kYy = k0 * ( 1 + kYr + kYb ) - * - * we have: - * Y = ( G + kYr*R + kYb*B ) - * Y0 = clamp[ Y/kYy + 16 ] - */ - -static const double kYr = k1/k3; -static const double kYb = k2/k4; -static const double kYy = k0*( 1. + kYr + kYb ); - -static void -initYtab( void ) -{ - const int imax = (int)( (kYr + kYb)*(31 << 2) + (61 << 3) + 0.1 ); - int i; - - gYTable = (uint8_t *)malloc(imax); - - for(i=0; i 235) x = 235; - gYTable[i] = (uint8_t) x; - } -} - -/* - * the source is RGB565, so adjust for 8-bit range of input values: - * - * G = (pixels >> 3) & 0xFC; - * R = (pixels >> 8) & 0xF8; - * B = (pixels & 0x1f) << 3; - * - * R2 = (pixels >> 11) R = R2*8 - * B2 = (pixels & 0x1f) B = B2*8 - * - * kYr*R = kYr2*R2 => kYr2 = kYr*8 - * kYb*B = kYb2*B2 => kYb2 = kYb*8 - * - * we want to use integer multiplications: - * - * SHIFT1 = 9 - * - * (ALPHA*R2) >> SHIFT1 == R*kYr => ALPHA = kYr*8*(1 << SHIFT1) - * - * ALPHA = kYr*(1 << (SHIFT1+3)) - * BETA = kYb*(1 << (SHIFT1+3)) - */ - -static const int SHIFT1 = 9; -static const int ALPHA = (int)( kYr*(1 << (SHIFT1+3)) + 0.5 ); -static const int BETA = (int)( kYb*(1 << (SHIFT1+3)) + 0.5 ); - -/* - * now let's try to get the values of Cb and Cr - * - * R-B = (k3*Cr - k4*Cb) - * - * k3*Cr = k4*Cb + (R-B) - * k4*Cb = k3*Cr - (R-B) - * - * R-G = (k1+k3)*Cr + k2*Cb - * = (k1+k3)*Cr + k2/k4*(k3*Cr - (R-B)/k0) - * = (k1 + k3 + k2*k3/k4)*Cr - k2/k4*(R-B) - * - * kRr*Cr = (R-G) + kYb*(R-B) - * - * Cr = ((R-G) + kYb*(R-B))/kRr - * Cr0 = clamp(Cr + 128) - */ - -static const double kRr = (k1 + k3 + k2*k3/k4); - -static void -initCrtab( void ) -{ - uint8_t *pTable; - int i; - - gCrTable = (uint8_t *)malloc(768*2); - - pTable = gCrTable + 384; - for(i=-384; i<384; i++) - pTable[i] = (uint8_t) clamp( i/kRr + 128.5 ); -} - -/* - * B-G = (k2 + k4)*Cb + k1*Cr - * = (k2 + k4)*Cb + k1/k3*(k4*Cb + (R-B)) - * = (k2 + k4 + k1*k4/k3)*Cb + k1/k3*(R-B) - * - * kBb*Cb = (B-G) - kYr*(R-B) - * - * Cb = ((B-G) - kYr*(R-B))/kBb - * Cb0 = clamp(Cb + 128) - * - */ - -static const double kBb = (k2 + k4 + k1*k4/k3); - -static void -initCbtab( void ) -{ - uint8_t *pTable; - int i; - - gCbTable = (uint8_t *)malloc(768*2); - - pTable = gCbTable + 384; - for(i=-384; i<384; i++) - pTable[i] = (uint8_t) clamp( i/kBb + 128.5 ); -} - -/* - * SHIFT2 = 16 - * - * DELTA = kYb*(1 << SHIFT2) - * GAMMA = kYr*(1 << SHIFT2) - */ - -static const int SHIFT2 = 16; -static const int DELTA = kYb*(1 << SHIFT2); -static const int GAMMA = kYr*(1 << SHIFT2); - -int32_t ccrgb16toyuv_wo_colorkey(uint8_t *rgb16,uint8_t *yuv422,uint32_t *param,uint8_t *table[]) -{ - uint16_t *inputRGB = (uint16_t*)rgb16; - uint8_t *outYUV = yuv422; - int32_t width_dst = param[0]; - int32_t height_dst = param[1]; - int32_t pitch_dst = param[2]; - int32_t mheight_dst = param[3]; - int32_t pitch_src = param[4]; - uint8_t *y_tab = table[0]; - uint8_t *cb_tab = table[1]; - uint8_t *cr_tab = table[2]; - - int32_t size16 = pitch_dst*mheight_dst; - int32_t i,j,count; - int32_t ilimit,jlimit; - uint8_t *tempY,*tempU,*tempV; - uint16_t pixels; - int tmp; -uint32_t temp; - - tempY = outYUV; - tempU = outYUV + (height_dst * pitch_dst); - tempV = tempU + 1; - - jlimit = height_dst; - ilimit = width_dst; - - for(j=0; j>11) ); - y0 = y_tab[(temp>>SHIFT1) + ((pixels>>3) & 0x00FC)]; - - G_ds += (pixels>>1) & 0x03E0; - B_ds += (pixels<<5) & 0x03E0; - R_ds += (pixels>>6) & 0x03E0; - - pixels = inputRGB[i+1]; - temp = (ALPHA*(pixels & 0x001F) + BETA*(pixels>>11) ); - y1 = y_tab[(temp>>SHIFT1) + ((pixels>>3) & 0x00FC)]; - - G_ds += (pixels>>1) & 0x03E0; - B_ds += (pixels<<5) & 0x03E0; - R_ds += (pixels>>6) & 0x03E0; - - R_ds >>= 1; - B_ds >>= 1; - G_ds >>= 1; - - tmp = R_ds - B_ds; - - u = cb_tab[(((R_ds-G_ds)<>(SHIFT2+2)]; - v = cr_tab[(((B_ds-G_ds)<>(SHIFT2+2)]; - - tempY[0] = y0; - tempY[1] = y1; - tempU[0] = u; - tempV[0] = v; - - tempY += 2; - tempU += 2; - tempV += 2; - } - - inputRGB += pitch_src; - } - - return 1; -} - -#define min(a,b) ((a)<(b)?(a):(b)) -#define max(a,b) ((a)>(b)?(a):(b)) - -static void convert_rgb16_to_yuv422(uint8_t *rgb, uint8_t *yuv, int width, int height) -{ - if (!tables_initialized) { - initYtab(); - initCrtab(); - initCbtab(); - tables_initialized = 1; - } - - uint32_t param[6]; - param[0] = (uint32_t) width; - param[1] = (uint32_t) height; - param[2] = (uint32_t) width; - param[3] = (uint32_t) height; - param[4] = (uint32_t) width; - param[5] = (uint32_t) 0; - - uint8_t *table[3]; - table[0] = gYTable; - table[1] = gCbTable + 384; - table[2] = gCrTable + 384; - - ccrgb16toyuv_wo_colorkey(rgb, yuv, param, table); -} - -const int FakeCamera::kRed; -const int FakeCamera::kGreen; -const int FakeCamera::kBlue; - -FakeCamera::FakeCamera(int width, int height) - : mTmpRgb16Buffer(0) -{ - setSize(width, height); -} - -FakeCamera::~FakeCamera() -{ - delete[] mTmpRgb16Buffer; -} - -void FakeCamera::setSize(int width, int height) -{ - mWidth = width; - mHeight = height; - mCounter = 0; - mCheckX = 0; - mCheckY = 0; - - // This will cause it to be reallocated on the next call - // to getNextFrameAsYuv422(). - delete[] mTmpRgb16Buffer; - mTmpRgb16Buffer = 0; -} - -void FakeCamera::getNextFrameAsRgb565(uint16_t *buffer) -{ - int size = mWidth / 10; - - drawCheckerboard(buffer, size); - - int x = ((mCounter*3)&255); - if(x>128) x = 255 - x; - int y = ((mCounter*5)&255); - if(y>128) y = 255 - y; - - drawSquare(buffer, x*size/32, y*size/32, (size*5)>>1, (mCounter&0x100)?kRed:kGreen, kBlue); - - mCounter++; -} - -void FakeCamera::getNextFrameAsYuv422(uint8_t *buffer) -{ - if (mTmpRgb16Buffer == 0) - mTmpRgb16Buffer = new uint16_t[mWidth * mHeight]; - - getNextFrameAsRgb565(mTmpRgb16Buffer); - convert_rgb16_to_yuv422((uint8_t*)mTmpRgb16Buffer, buffer, mWidth, mHeight); -} - -void FakeCamera::drawSquare(uint16_t *dst, int x, int y, int size, int color, int shadow) -{ - int square_xstop, square_ystop, shadow_xstop, shadow_ystop; - - square_xstop = min(mWidth, x+size); - square_ystop = min(mHeight, y+size); - shadow_xstop = min(mWidth, x+size+(size/4)); - shadow_ystop = min(mHeight, y+size+(size/4)); - - // Do the shadow. - uint16_t *sh = &dst[(y+(size/4))*mWidth]; - for (int j = y + (size/4); j < shadow_ystop; j++) { - for (int i = x + (size/4); i < shadow_xstop; i++) { - sh[i] &= shadow; - } - sh += mWidth; - } - - // Draw the square. - uint16_t *sq = &dst[y*mWidth]; - for (int j = y; j < square_ystop; j++) { - for (int i = x; i < square_xstop; i++) { - sq[i] = color; - } - sq += mWidth; - } -} - -void FakeCamera::drawCheckerboard(uint16_t *dst, int size) -{ - bool black = true; - - if((mCheckX/size)&1) - black = false; - if((mCheckY/size)&1) - black = !black; - - int county = mCheckY%size; - int checkxremainder = mCheckX%size; - - for(int y=0;y= size) { - countx=0; - current = !current; - } - } - if(county++ >= size) { - county=0; - black = !black; - } - } - mCheckX += 3; - mCheckY++; -} - - -status_t FakeCamera::dump(int fd, const Vector& args) -{ - const size_t SIZE = 256; - char buffer[SIZE]; - String8 result; - snprintf(buffer, 255, " width x height (%d x %d), counter (%d), check x-y coordinate(%d, %d)\n", mWidth, mHeight, mCounter, mCheckX, mCheckY); - result.append(buffer); - ::write(fd, result.string(), result.size()); - return NO_ERROR; -} - - -}; // namespace android -- cgit v1.1