jni/feature_mos/src/mosaic/ImageUtils.cpp - platform/packages/apps/Camera - Git at Google

 /*
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 ///////////////////////////////////////////////////
 // ImageUtils.cpp
 // $Id: ImageUtils.cpp,v 1.12 2011/06/17 13:35:48 mbansal Exp $


 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/time.h>

 #include "ImageUtils.h"

 void ImageUtils::rgba2yvu(ImageType out, ImageType in, int width, int height)
 {
   int r,g,b, a;
   ImageType yimg = out;
   ImageType vimg = yimg + width*height;
   ImageType uimg = vimg + width*height;
   ImageType image = in;

   for (int ii = 0; ii < height; ii++) {
     for (int ij = 0; ij < width; ij++) {
       r = (*image++);
       g = (*image++);
       b = (*image++);
       a = (*image++);

       if (r < 0) r = 0;
       if (r > 255) r = 255;
       if (g < 0) g = 0;
       if (g > 255) g = 255;
       if (b < 0) b = 0;
       if (b > 255) b = 255;

       int val = (int) (REDY * r + GREENY * g + BLUEY * b) / 1000 + 16;
       if (val < 0) val = 0;
       if (val > 255) val = 255;
       *(yimg) = val;

       val = (int) (REDV * r - GREENV * g - BLUEV * b) / 1000 + 128;
       if (val < 0) val = 0;
       if (val > 255) val = 255;
       *(vimg) = val;

       val = (int) (-REDU * r - GREENU * g + BLUEU * b) / 1000 + 128;
       if (val < 0) val = 0;
       if (val > 255) val = 255;
       *(uimg) = val;

       yimg++;
       uimg++;
       vimg++;
     }
   }
 }


 void ImageUtils::rgb2yvu(ImageType out, ImageType in, int width, int height)
 {
   int r,g,b;
   ImageType yimg = out;
   ImageType vimg = yimg + width*height;
   ImageType uimg = vimg + width*height;
   ImageType image = in;

   for (int ii = 0; ii < height; ii++) {
     for (int ij = 0; ij < width; ij++) {
       r = (*image++);
       g = (*image++);
       b = (*image++);

       if (r < 0) r = 0;
       if (r > 255) r = 255;
       if (g < 0) g = 0;
       if (g > 255) g = 255;
       if (b < 0) b = 0;
       if (b > 255) b = 255;

       int val = (int) (REDY * r + GREENY * g + BLUEY * b) / 1000 + 16;
       if (val < 0) val = 0;
       if (val > 255) val = 255;
       *(yimg) = val;

       val = (int) (REDV * r - GREENV * g - BLUEV * b) / 1000 + 128;
       if (val < 0) val = 0;
       if (val > 255) val = 255;
       *(vimg) = val;

       val = (int) (-REDU * r - GREENU * g + BLUEU * b) / 1000 + 128;
       if (val < 0) val = 0;
       if (val > 255) val = 255;
       *(uimg) = val;

       yimg++;
       uimg++;
       vimg++;
     }
   }
 }

 ImageType ImageUtils::rgb2gray(ImageType in, int width, int height)
 {
   int r,g,b, nr, ng, nb, val;
   ImageType gray = NULL;
   ImageType image = in;
   ImageType out = ImageUtils::allocateImage(width, height, 1);
   ImageType outCopy = out;

   for (int ii = 0; ii < height; ii++) {
     for (int ij = 0; ij < width; ij++) {
       r = (*image++);
       g = (*image++);
       b = (*image++);

       if (r < 0) r = 0;
       if (r > 255) r = 255;
       if (g < 0) g = 0;
       if (g > 255) g = 255;
       if (b < 0) b = 0;
       if (b > 255) b = 255;

       (*outCopy) = ( 0.3*r + 0.59*g + 0.11*b);

       outCopy++;
     }
   }

   return out;
 }

 ImageType ImageUtils::rgb2gray(ImageType out, ImageType in, int width, int height)
 {
   int r,g,b, nr, ng, nb, val;
   ImageType gray = out;
   ImageType image = in;
   ImageType outCopy = out;

   for (int ii = 0; ii < height; ii++) {
     for (int ij = 0; ij < width; ij++) {
       r = (*image++);
       g = (*image++);
       b = (*image++);

       if (r < 0) r = 0;
       if (r > 255) r = 255;
       if (g < 0) g = 0;
       if (g > 255) g = 255;
       if (b < 0) b = 0;
       if (b > 255) b = 255;

       (*outCopy) = ( 0.3*r + 0.59*g + 0.11*b);

       outCopy++;
     }
   }

   return out;

 }

 ImageType *ImageUtils::imageTypeToRowPointers(ImageType in, int width, int height)
 {
   int i;
   int m_h = height;
   int m_w = width;

   ImageType *m_rows = new ImageType[m_h];

   for (i=0;i<m_h;i++) {
     m_rows[i] = &in[(m_w)*i];
   }
   return m_rows;
 }

 void ImageUtils::yvu2rgb(ImageType out, ImageType in, int width, int height)
 {
   int y,v,u, r, g, b;
   unsigned char *yimg = in;
   unsigned char *vimg = yimg + width*height;
   unsigned char *uimg = vimg + width*height;
   unsigned char *image = out;

   for (int i = 0; i < height; i++) {
     for (int j = 0; j < width; j++) {

       y = (*yimg);
       v = (*vimg);
       u = (*uimg);

       if (y < 0) y = 0;
       if (y > 255) y = 255;
       if (u < 0) u = 0;
       if (u > 255) u = 255;
       if (v < 0) v = 0;
       if (v > 255) v = 255;

       b = (int) ( 1.164*(y - 16) + 2.018*(u-128));
       g = (int) ( 1.164*(y - 16) - 0.813*(v-128) - 0.391*(u-128));
       r = (int) ( 1.164*(y - 16) + 1.596*(v-128));

       if (r < 0) r = 0;
       if (r > 255) r = 255;
       if (g < 0) g = 0;
       if (g > 255) g = 255;
       if (b < 0) b = 0;
       if (b > 255) b = 255;

       *(image++) = r;
       *(image++) = g;
       *(image++) = b;

       yimg++;
       uimg++;
       vimg++;

     }
   }
 }

 void ImageUtils::yvu2bgr(ImageType out, ImageType in, int width, int height)
 {
   int y,v,u, r, g, b;
   unsigned char *yimg = in;
   unsigned char *vimg = yimg + width*height;
   unsigned char *uimg = vimg + width*height;
   unsigned char *image = out;

   for (int i = 0; i < height; i++) {
     for (int j = 0; j < width; j++) {

       y = (*yimg);
       v = (*vimg);
       u = (*uimg);

       if (y < 0) y = 0;
       if (y > 255) y = 255;
       if (u < 0) u = 0;
       if (u > 255) u = 255;
       if (v < 0) v = 0;
       if (v > 255) v = 255;

       b = (int) ( 1.164*(y - 16) + 2.018*(u-128));
       g = (int) ( 1.164*(y - 16) - 0.813*(v-128) - 0.391*(u-128));
       r = (int) ( 1.164*(y - 16) + 1.596*(v-128));

       if (r < 0) r = 0;
       if (r > 255) r = 255;
       if (g < 0) g = 0;
       if (g > 255) g = 255;
       if (b < 0) b = 0;
       if (b > 255) b = 255;

       *(image++) = b;
       *(image++) = g;
       *(image++) = r;

       yimg++;
       uimg++;
       vimg++;

     }
   }
 }


 ImageType ImageUtils::readBinaryPPM(const char *filename, int &width, int &height)
 {

   FILE *imgin = NULL;
   int mval=0, format=0, eret;
   ImageType ret = (ImageType)IMAGE_TYPE_NOIMAGE;

   imgin = fopen(filename, "r");
   if (imgin == NULL) {
     fprintf(stderr, "Error: Filename %s not found\n", filename);
     return ret;
   }

   eret = fscanf(imgin, "P%d\n", &format);
   if (format != 6) {
     fprintf(stderr, "Error: readBinaryPPM only supports PPM format (P6)\n");
     return ret;
   }

   eret = fscanf(imgin, "%d %d\n", &width, &height);
   eret = fscanf(imgin, "%d\n", &mval);
   ret  = allocateImage(width, height, IMAGE_TYPE_NUM_CHANNELS);
   eret = fread(ret, sizeof(ImageTypeBase), IMAGE_TYPE_NUM_CHANNELS*width*height, imgin);

   fclose(imgin);

   return ret;

 }

 void ImageUtils::writeBinaryPPM(ImageType image, const char *filename, int width, int height, int numChannels)
 {
   FILE *imgout = fopen(filename, "w");

   if (imgout == NULL) {
     fprintf(stderr, "Error: Filename %s could not be opened for writing\n", filename);
     return;
   }

   if (numChannels == 3) {
     fprintf(imgout, "P6\n%d %d\n255\n", width, height);
   } else if (numChannels == 1) {
     fprintf(imgout, "P5\n%d %d\n255\n", width, height);
   } else {
     fprintf(stderr, "Error: writeBinaryPPM: Unsupported number of channels\n");
   }
   fwrite(image, sizeof(ImageTypeBase), numChannels*width*height, imgout);

   fclose(imgout);

 }

 ImageType ImageUtils::allocateImage(int width, int height, int numChannels, short int border)
 {
   int overallocation = 256;
  return (ImageType) calloc(width*height*numChannels+overallocation, sizeof(ImageTypeBase));
 }


 void ImageUtils::freeImage(ImageType image)
 {
   free(image);
 }


 // allocation of one color image used for tmp buffers, etc.
 // format of contiguous memory block:
 //    YUVInfo struct (type + BimageInfo for Y,U, and V),
 //    Y row pointers
 //    U row pointers
 //    V row pointers
 //    Y image pixels
 //    U image pixels
 //    V image pixels
 YUVinfo *YUVinfo::allocateImage(unsigned short width, unsigned short height)
 {
     unsigned short heightUV, widthUV;

     widthUV = width;
     heightUV = height;

     // figure out how much space to hold all pixels...
     int size = ((width * height * 3) + 8);
     unsigned char *position = 0;

     // VC 8 does not like calling free on yuv->Y.ptr since it is in
     // the middle of a block.  So rearrange the memory layout so after
     // calling mapYUVInforToImage yuv->Y.ptr points to the begginning
     // of the calloc'ed block.
     YUVinfo *yuv = (YUVinfo *) calloc(sizeof(YUVinfo), 1);
     if (yuv) {
         yuv->Y.width  = yuv->Y.pitch = width;
         yuv->Y.height = height;
         yuv->Y.border = yuv->U.border = yuv->V.border = (unsigned short) 0;
         yuv->U.width  = yuv->U.pitch = yuv->V.width = yuv->V.pitch = widthUV;
         yuv->U.height = yuv->V.height = heightUV;

         unsigned char* block = (unsigned char*) calloc(
                 sizeof(unsigned char *) * (height + heightUV + heightUV) +
                 sizeof(unsigned char) * size, 1);

         position = block;
         unsigned char **y = (unsigned char **) (block + size);

         /* Initialize and assign row pointers */
         yuv->Y.ptr = y;
         yuv->V.ptr = &y[height];
         yuv->U.ptr = &y[height + heightUV];
     }
     if (size)
         mapYUVInfoToImage(yuv, position);
     return yuv;
 }

 // wrap YUVInfo row pointers around 3 contiguous image (color component) planes.
 // position = starting pixel in image.
 void YUVinfo::mapYUVInfoToImage(YUVinfo *img, unsigned char *position)
 {
     int i;
     for (i = 0; i < img->Y.height; i++, position += img->Y.width)
         img->Y.ptr[i] = position;
     for (i = 0; i < img->V.height; i++, position += img->V.width)
         img->V.ptr[i] = position;
     for (i = 0; i < img->U.height; i++, position += img->U.width)
         img->U.ptr[i] = position;
 }
	/*
	* Copyright (C) 2011 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	///////////////////////////////////////////////////
	// ImageUtils.cpp
	// $Id: ImageUtils.cpp,v 1.12 2011/06/17 13:35:48 mbansal Exp $


	#include <stdio.h>
	#include <stdlib.h>
	#include <sys/time.h>

	#include "ImageUtils.h"

	void ImageUtils::rgba2yvu(ImageType out, ImageType in, int width, int height)
	{
	int r,g,b, a;
	ImageType yimg = out;
	ImageType vimg = yimg + width*height;
	ImageType uimg = vimg + width*height;
	ImageType image = in;

	for (int ii = 0; ii < height; ii++) {
	for (int ij = 0; ij < width; ij++) {
	r = (*image++);
	g = (*image++);
	b = (*image++);
	a = (*image++);

	if (r < 0) r = 0;
	if (r > 255) r = 255;
	if (g < 0) g = 0;
	if (g > 255) g = 255;
	if (b < 0) b = 0;
	if (b > 255) b = 255;

	int val = (int) (REDY * r + GREENY * g + BLUEY * b) / 1000 + 16;
	if (val < 0) val = 0;
	if (val > 255) val = 255;
	*(yimg) = val;

	val = (int) (REDV * r - GREENV * g - BLUEV * b) / 1000 + 128;
	if (val < 0) val = 0;
	if (val > 255) val = 255;
	*(vimg) = val;

	val = (int) (-REDU * r - GREENU * g + BLUEU * b) / 1000 + 128;
	if (val < 0) val = 0;
	if (val > 255) val = 255;
	*(uimg) = val;

	yimg++;
	uimg++;
	vimg++;
	}
	}
	}


	void ImageUtils::rgb2yvu(ImageType out, ImageType in, int width, int height)
	{
	int r,g,b;
	ImageType yimg = out;
	ImageType vimg = yimg + width*height;
	ImageType uimg = vimg + width*height;
	ImageType image = in;

	for (int ii = 0; ii < height; ii++) {
	for (int ij = 0; ij < width; ij++) {
	r = (*image++);
	g = (*image++);
	b = (*image++);

	if (r < 0) r = 0;
	if (r > 255) r = 255;
	if (g < 0) g = 0;
	if (g > 255) g = 255;
	if (b < 0) b = 0;
	if (b > 255) b = 255;

	int val = (int) (REDY * r + GREENY * g + BLUEY * b) / 1000 + 16;
	if (val < 0) val = 0;
	if (val > 255) val = 255;
	*(yimg) = val;

	val = (int) (REDV * r - GREENV * g - BLUEV * b) / 1000 + 128;
	if (val < 0) val = 0;
	if (val > 255) val = 255;
	*(vimg) = val;

	val = (int) (-REDU * r - GREENU * g + BLUEU * b) / 1000 + 128;
	if (val < 0) val = 0;
	if (val > 255) val = 255;
	*(uimg) = val;

	yimg++;
	uimg++;
	vimg++;
	}
	}
	}

	ImageType ImageUtils::rgb2gray(ImageType in, int width, int height)
	{
	int r,g,b, nr, ng, nb, val;
	ImageType gray = NULL;
	ImageType image = in;
	ImageType out = ImageUtils::allocateImage(width, height, 1);
	ImageType outCopy = out;

	for (int ii = 0; ii < height; ii++) {
	for (int ij = 0; ij < width; ij++) {
	r = (*image++);
	g = (*image++);
	b = (*image++);

	if (r < 0) r = 0;
	if (r > 255) r = 255;
	if (g < 0) g = 0;
	if (g > 255) g = 255;
	if (b < 0) b = 0;
	if (b > 255) b = 255;

	(outCopy) = ( 0.3r + 0.59g + 0.11b);

	outCopy++;
	}
	}

	return out;
	}

	ImageType ImageUtils::rgb2gray(ImageType out, ImageType in, int width, int height)
	{
	int r,g,b, nr, ng, nb, val;
	ImageType gray = out;
	ImageType image = in;
	ImageType outCopy = out;

	for (int ii = 0; ii < height; ii++) {
	for (int ij = 0; ij < width; ij++) {
	r = (*image++);
	g = (*image++);
	b = (*image++);

	if (r < 0) r = 0;
	if (r > 255) r = 255;
	if (g < 0) g = 0;
	if (g > 255) g = 255;
	if (b < 0) b = 0;
	if (b > 255) b = 255;

	(outCopy) = ( 0.3r + 0.59g + 0.11b);

	outCopy++;
	}
	}

	return out;

	}

	ImageType *ImageUtils::imageTypeToRowPointers(ImageType in, int width, int height)
	{
	int i;
	int m_h = height;
	int m_w = width;

	ImageType *m_rows = new ImageType[m_h];

	for (i=0;i<m_h;i++) {
	m_rows[i] = &in[(m_w)*i];
	}
	return m_rows;
	}

	void ImageUtils::yvu2rgb(ImageType out, ImageType in, int width, int height)
	{
	int y,v,u, r, g, b;
	unsigned char *yimg = in;
	unsigned char vimg = yimg + widthheight;
	unsigned char uimg = vimg + widthheight;
	unsigned char *image = out;

	for (int i = 0; i < height; i++) {
	for (int j = 0; j < width; j++) {

	y = (*yimg);
	v = (*vimg);
	u = (*uimg);

	if (y < 0) y = 0;
	if (y > 255) y = 255;
	if (u < 0) u = 0;
	if (u > 255) u = 255;
	if (v < 0) v = 0;
	if (v > 255) v = 255;

	b = (int) ( 1.164(y - 16) + 2.018(u-128));
	g = (int) ( 1.164(y - 16) - 0.813(v-128) - 0.391*(u-128));
	r = (int) ( 1.164(y - 16) + 1.596(v-128));

	if (r < 0) r = 0;
	if (r > 255) r = 255;
	if (g < 0) g = 0;
	if (g > 255) g = 255;
	if (b < 0) b = 0;
	if (b > 255) b = 255;

	*(image++) = r;
	*(image++) = g;
	*(image++) = b;

	yimg++;
	uimg++;
	vimg++;

	}
	}
	}

	void ImageUtils::yvu2bgr(ImageType out, ImageType in, int width, int height)
	{
	int y,v,u, r, g, b;
	unsigned char *yimg = in;
	unsigned char vimg = yimg + widthheight;
	unsigned char uimg = vimg + widthheight;
	unsigned char *image = out;

	for (int i = 0; i < height; i++) {
	for (int j = 0; j < width; j++) {

	y = (*yimg);
	v = (*vimg);
	u = (*uimg);

	if (y < 0) y = 0;
	if (y > 255) y = 255;
	if (u < 0) u = 0;
	if (u > 255) u = 255;
	if (v < 0) v = 0;
	if (v > 255) v = 255;

	b = (int) ( 1.164(y - 16) + 2.018(u-128));
	g = (int) ( 1.164(y - 16) - 0.813(v-128) - 0.391*(u-128));
	r = (int) ( 1.164(y - 16) + 1.596(v-128));

	if (r < 0) r = 0;
	if (r > 255) r = 255;
	if (g < 0) g = 0;
	if (g > 255) g = 255;
	if (b < 0) b = 0;
	if (b > 255) b = 255;

	*(image++) = b;
	*(image++) = g;
	*(image++) = r;

	yimg++;
	uimg++;
	vimg++;

	}
	}
	}


	ImageType ImageUtils::readBinaryPPM(const char *filename, int &width, int &height)
	{

	FILE *imgin = NULL;
	int mval=0, format=0, eret;
	ImageType ret = (ImageType)IMAGE_TYPE_NOIMAGE;

	imgin = fopen(filename, "r");
	if (imgin == NULL) {
	fprintf(stderr, "Error: Filename %s not found\n", filename);
	return ret;
	}

	eret = fscanf(imgin, "P%d\n", &format);
	if (format != 6) {
	fprintf(stderr, "Error: readBinaryPPM only supports PPM format (P6)\n");
	return ret;
	}

	eret = fscanf(imgin, "%d %d\n", &width, &height);
	eret = fscanf(imgin, "%d\n", &mval);
	ret = allocateImage(width, height, IMAGE_TYPE_NUM_CHANNELS);
	eret = fread(ret, sizeof(ImageTypeBase), IMAGE_TYPE_NUM_CHANNELSwidthheight, imgin);

	fclose(imgin);

	return ret;

	}

	void ImageUtils::writeBinaryPPM(ImageType image, const char *filename, int width, int height, int numChannels)
	{
	FILE *imgout = fopen(filename, "w");

	if (imgout == NULL) {
	fprintf(stderr, "Error: Filename %s could not be opened for writing\n", filename);
	return;
	}

	if (numChannels == 3) {
	fprintf(imgout, "P6\n%d %d\n255\n", width, height);
	} else if (numChannels == 1) {
	fprintf(imgout, "P5\n%d %d\n255\n", width, height);
	} else {
	fprintf(stderr, "Error: writeBinaryPPM: Unsupported number of channels\n");
	}
	fwrite(image, sizeof(ImageTypeBase), numChannelswidthheight, imgout);

	fclose(imgout);

	}

	ImageType ImageUtils::allocateImage(int width, int height, int numChannels, short int border)
	{
	int overallocation = 256;
	return (ImageType) calloc(widthheightnumChannels+overallocation, sizeof(ImageTypeBase));
	}


	void ImageUtils::freeImage(ImageType image)
	{
	free(image);
	}


	// allocation of one color image used for tmp buffers, etc.
	// format of contiguous memory block:
	// YUVInfo struct (type + BimageInfo for Y,U, and V),
	// Y row pointers
	// U row pointers
	// V row pointers
	// Y image pixels
	// U image pixels
	// V image pixels
	YUVinfo *YUVinfo::allocateImage(unsigned short width, unsigned short height)
	{
	unsigned short heightUV, widthUV;

	widthUV = width;
	heightUV = height;

	// figure out how much space to hold all pixels...
	int size = ((width * height * 3) + 8);
	unsigned char *position = 0;

	// VC 8 does not like calling free on yuv->Y.ptr since it is in
	// the middle of a block. So rearrange the memory layout so after
	// calling mapYUVInforToImage yuv->Y.ptr points to the begginning
	// of the calloc'ed block.
	YUVinfo yuv = (YUVinfo ) calloc(sizeof(YUVinfo), 1);
	if (yuv) {
	yuv->Y.width = yuv->Y.pitch = width;
	yuv->Y.height = height;
	yuv->Y.border = yuv->U.border = yuv->V.border = (unsigned short) 0;
	yuv->U.width = yuv->U.pitch = yuv->V.width = yuv->V.pitch = widthUV;
	yuv->U.height = yuv->V.height = heightUV;

	unsigned char* block = (unsigned char*) calloc(
	sizeof(unsigned char ) (height + heightUV + heightUV) +
	sizeof(unsigned char) * size, 1);

	position = block;
	unsigned char y = (unsigned char ) (block + size);

	/* Initialize and assign row pointers */
	yuv->Y.ptr = y;
	yuv->V.ptr = &y[height];
	yuv->U.ptr = &y[height + heightUV];
	}
	if (size)
	mapYUVInfoToImage(yuv, position);
	return yuv;
	}

	// wrap YUVInfo row pointers around 3 contiguous image (color component) planes.
	// position = starting pixel in image.
	void YUVinfo::mapYUVInfoToImage(YUVinfo img, unsigned char position)
	{
	int i;
	for (i = 0; i < img->Y.height; i++, position += img->Y.width)
	img->Y.ptr[i] = position;
	for (i = 0; i < img->V.height; i++, position += img->V.width)
	img->V.ptr[i] = position;
	for (i = 0; i < img->U.height; i++, position += img->U.width)
	img->U.ptr[i] = position;
	}