libs/rs/rsAllocation.cpp - platform/frameworks/base - Gitiles

 /*
  * Copyright (C) 2009 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.
  */

 #include "rsContext.h"

 using namespace android;
 using namespace android::renderscript;

 Allocation::Allocation(const Type *type)
 {
     mPtr = NULL;

     mCpuWrite = false;
     mCpuRead = false;
     mGpuWrite = false;
     mGpuRead = false;

     mReadWriteRatio = 0;
     mUpdateSize = 0;

     mIsTexture = false;
     mTextureID = 0;

     mIsVertexBuffer = false;
     mBufferID = 0;

     mType.set(type);
     mPtr = malloc(mType->getSizeBytes());
     if (!mPtr) {
         LOGE("Allocation::Allocation, alloc failure");
     }

 }

 Allocation::~Allocation()
 {
 }

 void Allocation::setCpuWritable(bool)
 {
 }

 void Allocation::setGpuWritable(bool)
 {
 }

 void Allocation::setCpuReadable(bool)
 {
 }

 void Allocation::setGpuReadable(bool)
 {
 }

 bool Allocation::fixAllocation()
 {
     return false;
 }

 void Allocation::uploadToTexture(uint32_t lodOffset)
 {
     //rsAssert(!mTextureId);
     rsAssert(lodOffset < mType->getLODCount());

     //LOGE("uploadToTexture  %i,  lod %i", mTextureID, lodOffset);

     if (!mTextureID) {
         glGenTextures(1, &mTextureID);
     }
     glBindTexture(GL_TEXTURE_2D, mTextureID);

     Adapter2D adapt(this);
     for(uint32_t lod = 0; (lod + lodOffset) < mType->getLODCount(); lod++) {
         adapt.setLOD(lod+lodOffset);

         uint16_t * ptr = static_cast<uint16_t *>(adapt.getElement(0,0));
         glTexImage2D(GL_TEXTURE_2D, lod, GL_RGB,
                      adapt.getDimX(), adapt.getDimY(),
                      0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, ptr);
     }
 }

 void Allocation::uploadToBufferObject()
 {
     rsAssert(!mType->getDimY());
     rsAssert(!mType->getDimZ());

     //LOGE("uploadToTexture  %i,  lod %i", mTextureID, lodOffset);

     if (!mBufferID) {
         glGenBuffers(1, &mBufferID);
     }
     glBindBuffer(GL_ARRAY_BUFFER, mBufferID);
     glBufferData(GL_ARRAY_BUFFER, mType->getSizeBytes(), getPtr(), GL_DYNAMIC_DRAW);
     glBindBuffer(GL_ARRAY_BUFFER, 0);
 }

 void Allocation::data(const void *data)
 {
     memcpy(mPtr, data, mType->getSizeBytes());
 }

 void Allocation::subData(uint32_t xoff, uint32_t count, const void *data)
 {
     uint32_t eSize = mType->getElementSizeBytes();
     uint8_t * ptr = static_cast<uint8_t *>(mPtr);
     ptr += eSize * xoff;
     memcpy(ptr, data, count * eSize);
 }

 void Allocation::subData(uint32_t xoff, uint32_t yoff,
              uint32_t w, uint32_t h, const void *data)
 {
     uint32_t eSize = mType->getElementSizeBytes();
     uint32_t lineSize = eSize * w;
     uint32_t destW = mType->getDimX();

     const uint8_t *src = static_cast<const uint8_t *>(data);
     uint8_t *dst = static_cast<uint8_t *>(mPtr);
     dst += eSize * (xoff + yoff * destW);
     for (uint32_t line=yoff; line < (yoff+h); line++) {
         uint8_t * ptr = static_cast<uint8_t *>(mPtr);
         memcpy(dst, src, lineSize);
         src += lineSize;
         dst += destW * eSize;
     }
 }

 void Allocation::subData(uint32_t xoff, uint32_t yoff, uint32_t zoff,
              uint32_t w, uint32_t h, uint32_t d, const void *data)
 {
 }


 /////////////////
 //


 namespace android {
 namespace renderscript {

 RsAllocation rsi_AllocationCreateTyped(Context *rsc, RsType vtype)
 {
     const Type * type = static_cast<const Type *>(vtype);

     Allocation * alloc = new Allocation(type);
     return alloc;
 }

 RsAllocation rsi_AllocationCreatePredefSized(Context *rsc, RsElementPredefined t, size_t count)
 {
     RsElement e = rsi_ElementGetPredefined(rsc, t);
     return rsi_AllocationCreateSized(rsc, e, count);
 }

 RsAllocation rsi_AllocationCreateSized(Context *rsc, RsElement e, size_t count)
 {
     Type * type = new Type();
     type->setDimX(count);
     type->setElement(static_cast<Element *>(e));
     type->compute();
     return rsi_AllocationCreateTyped(rsc, type);
 }

 void rsi_AllocationUploadToTexture(Context *rsc, RsAllocation va, uint32_t baseMipLevel)
 {
     Allocation *alloc = static_cast<Allocation *>(va);
     alloc->uploadToTexture(baseMipLevel);
 }

 void rsi_AllocationUploadToBufferObject(Context *rsc, RsAllocation va)
 {
     Allocation *alloc = static_cast<Allocation *>(va);
     alloc->uploadToBufferObject();
 }

 void rsi_AllocationDestroy(Context *rsc, RsAllocation)
 {
 }

 static void mip(const Adapter2D &out, const Adapter2D &in)
 {
     uint32_t w = out.getDimX();
     uint32_t h = out.getDimY();

     for (uint32_t y=0; y < w; y++) {
         uint16_t *oPtr = static_cast<uint16_t *>(out.getElement(0, y));
         const uint16_t *i1 = static_cast<uint16_t *>(in.getElement(0, y*2));
         const uint16_t *i2 = static_cast<uint16_t *>(in.getElement(0, y*2+1));

         for (uint32_t x=0; x < h; x++) {
             *oPtr = rsBoxFilter565(i1[0], i1[2], i2[0], i2[1]);
             oPtr ++;
             i1 += 2;
             i2 += 2;
         }
     }

 }


 typedef void (*ElementConverter_t)(void *dst, const void *src, uint32_t count);

 static void elementConverter_cpy_16(void *dst, const void *src, uint32_t count)
 {
     memcpy(dst, src, count * 2);
 }
 static void elementConverter_cpy_8(void *dst, const void *src, uint32_t count)
 {
     memcpy(dst, src, count);
 }
 static void elementConverter_cpy_32(void *dst, const void *src, uint32_t count)
 {
     memcpy(dst, src, count * 4);
 }


 static void elementConverter_888_to_565(void *dst, const void *src, uint32_t count)
 {
     uint16_t *d = static_cast<uint16_t *>(dst);
     const uint8_t *s = static_cast<const uint8_t *>(src);

     while(count--) {
         *d = rs888to565(s[0], s[1], s[2]);
         d++;
         s+= 3;
     }
 }

 static void elementConverter_8888_to_565(void *dst, const void *src, uint32_t count)
 {
     uint16_t *d = static_cast<uint16_t *>(dst);
     const uint8_t *s = static_cast<const uint8_t *>(src);

     while(count--) {
         *d = rs888to565(s[0], s[1], s[2]);
         d++;
         s+= 4;
     }
 }

 static ElementConverter_t pickConverter(RsElementPredefined dstFmt, RsElementPredefined srcFmt)
 {
     if ((dstFmt == RS_ELEMENT_RGB_565) &&
         (srcFmt == RS_ELEMENT_RGB_565)) {
         return elementConverter_cpy_16;
     }

     if ((dstFmt == RS_ELEMENT_RGB_565) &&
         (srcFmt == RS_ELEMENT_RGB_888)) {
         return elementConverter_888_to_565;
     }

     if ((dstFmt == RS_ELEMENT_RGB_565) &&
         (srcFmt == RS_ELEMENT_RGBA_8888)) {
         return elementConverter_8888_to_565;
     }


     LOGE("pickConverter, unsuported combo");
     return 0;
 }


 RsAllocation rsi_AllocationCreateFromBitmap(Context *rsc, uint32_t w, uint32_t h, RsElementPredefined dstFmt, RsElementPredefined srcFmt,  bool genMips, const void *data)
 {
     rsi_TypeBegin(rsc, rsi_ElementGetPredefined(rsc, RS_ELEMENT_RGB_565));
     rsi_TypeAdd(rsc, RS_DIMENSION_X, w);
     rsi_TypeAdd(rsc, RS_DIMENSION_Y, h);
     if (genMips) {
         rsi_TypeAdd(rsc, RS_DIMENSION_LOD, 1);
     }
     RsType type = rsi_TypeCreate(rsc);

     RsAllocation vTexAlloc = rsi_AllocationCreateTyped(rsc, type);
     Allocation *texAlloc = static_cast<Allocation *>(vTexAlloc);
     if (texAlloc == NULL) {
         LOGE("Memory allocation failure");
         return NULL;
     }
     texAlloc->incRef();

     ElementConverter_t cvt = pickConverter(dstFmt, srcFmt);
     cvt(texAlloc->getPtr(), data, w * h);

     if (genMips) {
         Adapter2D adapt(texAlloc);
         Adapter2D adapt2(texAlloc);
         for(uint32_t lod=0; lod < (texAlloc->getType()->getLODCount() -1); lod++) {
             adapt.setLOD(lod);
             adapt2.setLOD(lod + 1);
             mip(adapt2, adapt);
         }
     }

     return texAlloc;
 }

 RsAllocation rsi_AllocationCreateFromFile(Context *rsc, const char *file, bool genMips)
 {
     typedef struct _Win3xBitmapHeader
     {
        uint16_t type;
        uint32_t totalSize;
        uint32_t reserved;
        uint32_t offset;
        int32_t hdrSize;            /* Size of this header in bytes */
        int32_t width;           /* Image width in pixels */
        int32_t height;          /* Image height in pixels */
        int16_t planes;          /* Number of color planes */
        int16_t bpp;             /* Number of bits per pixel */
        /* Fields added for Windows 3.x follow this line */
        int32_t compression;     /* Compression methods used */
        int32_t sizeOfBitmap;    /* Size of bitmap in bytes */
        int32_t horzResolution;  /* Horizontal resolution in pixels per meter */
        int32_t vertResolution;  /* Vertical resolution in pixels per meter */
        int32_t colorsUsed;      /* Number of colors in the image */
        int32_t colorsImportant; /* Minimum number of important colors */
     } __attribute__((__packed__)) WIN3XBITMAPHEADER;

     _Win3xBitmapHeader hdr;

     FILE *f = fopen(file, "rb");
     if (f == NULL) {
         LOGE("rsAllocationCreateFromBitmap failed to open file %s", file);
         return NULL;
     }
     memset(&hdr, 0, sizeof(hdr));
     fread(&hdr, sizeof(hdr), 1, f);

     if (hdr.bpp != 24) {
         LOGE("Unsuported BMP type");
         fclose(f);
         return NULL;
     }

     int32_t texWidth = rsHigherPow2(hdr.width);
     int32_t texHeight = rsHigherPow2(hdr.height);

     rsi_TypeBegin(rsc, rsi_ElementGetPredefined(rsc, RS_ELEMENT_RGB_565));
     rsi_TypeAdd(rsc, RS_DIMENSION_X, texWidth);
     rsi_TypeAdd(rsc, RS_DIMENSION_Y, texHeight);
     if (genMips) {
         rsi_TypeAdd(rsc, RS_DIMENSION_LOD, 1);
     }
     RsType type = rsi_TypeCreate(rsc);

     RsAllocation vTexAlloc = rsi_AllocationCreateTyped(rsc, type);
     Allocation *texAlloc = static_cast<Allocation *>(vTexAlloc);
     texAlloc->incRef();
     if (texAlloc == NULL) {
         LOGE("Memory allocation failure");
         fclose(f);
         return NULL;
     }

     // offset to letterbox if height is not pow2
     Adapter2D adapt(texAlloc);
     uint8_t * fileInBuf = new uint8_t[texWidth * 3];
     uint32_t yOffset = (hdr.width - hdr.height) / 2;
     uint16_t *tmp = static_cast<uint16_t *>(adapt.getElement(0, yOffset));

     for (int y=0; y < hdr.height; y++) {
         fseek(f, hdr.offset + (y*hdr.width*3), SEEK_SET);
         fread(fileInBuf, 1, hdr.width * 3, f);
         for(int x=0; x < hdr.width; x++) {
             *tmp = rs888to565(fileInBuf[x*3], fileInBuf[x*3 + 1], fileInBuf[x*3 + 2]);
             tmp++;
         }
     }

     fclose(f);
     delete [] fileInBuf;

     if (genMips) {
         Adapter2D adapt2(texAlloc);
         for(uint32_t lod=0; lod < (texAlloc->getType()->getLODCount() -1); lod++) {
             adapt.setLOD(lod);
             adapt2.setLOD(lod + 1);
             mip(adapt2, adapt);
         }
     }

     return texAlloc;
 }


 void rsi_AllocationData(Context *rsc, RsAllocation va, const void *data)
 {
     Allocation *a = static_cast<Allocation *>(va);
     a->data(data);
 }

 void rsi_Allocation1DSubData(Context *rsc, RsAllocation va, uint32_t xoff, uint32_t count, const void *data)
 {
     Allocation *a = static_cast<Allocation *>(va);
     a->subData(xoff, count, data);
 }

 void rsi_Allocation2DSubData(Context *rsc, RsAllocation va, uint32_t xoff, uint32_t yoff, uint32_t w, uint32_t h, const void *data)
 {
     Allocation *a = static_cast<Allocation *>(va);
     a->subData(xoff, yoff, w, h, data);
 }


 }
 }
	/*
	* Copyright (C) 2009 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.
	*/

	#include "rsContext.h"

	using namespace android;
	using namespace android::renderscript;

	Allocation::Allocation(const Type *type)
	{
	mPtr = NULL;

	mCpuWrite = false;
	mCpuRead = false;
	mGpuWrite = false;
	mGpuRead = false;

	mReadWriteRatio = 0;
	mUpdateSize = 0;

	mIsTexture = false;
	mTextureID = 0;

	mIsVertexBuffer = false;
	mBufferID = 0;

	mType.set(type);
	mPtr = malloc(mType->getSizeBytes());
	if (!mPtr) {
	LOGE("Allocation::Allocation, alloc failure");
	}

	}

	Allocation::~Allocation()
	{
	}

	void Allocation::setCpuWritable(bool)
	{
	}

	void Allocation::setGpuWritable(bool)
	{
	}

	void Allocation::setCpuReadable(bool)
	{
	}

	void Allocation::setGpuReadable(bool)
	{
	}

	bool Allocation::fixAllocation()
	{
	return false;
	}

	void Allocation::uploadToTexture(uint32_t lodOffset)
	{
	//rsAssert(!mTextureId);
	rsAssert(lodOffset < mType->getLODCount());

	//LOGE("uploadToTexture %i, lod %i", mTextureID, lodOffset);

	if (!mTextureID) {
	glGenTextures(1, &mTextureID);
	}
	glBindTexture(GL_TEXTURE_2D, mTextureID);

	Adapter2D adapt(this);
	for(uint32_t lod = 0; (lod + lodOffset) < mType->getLODCount(); lod++) {
	adapt.setLOD(lod+lodOffset);

	uint16_t * ptr = static_cast<uint16_t *>(adapt.getElement(0,0));
	glTexImage2D(GL_TEXTURE_2D, lod, GL_RGB,
	adapt.getDimX(), adapt.getDimY(),
	0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, ptr);
	}
	}

	void Allocation::uploadToBufferObject()
	{
	rsAssert(!mType->getDimY());
	rsAssert(!mType->getDimZ());

	//LOGE("uploadToTexture %i, lod %i", mTextureID, lodOffset);

	if (!mBufferID) {
	glGenBuffers(1, &mBufferID);
	}
	glBindBuffer(GL_ARRAY_BUFFER, mBufferID);
	glBufferData(GL_ARRAY_BUFFER, mType->getSizeBytes(), getPtr(), GL_DYNAMIC_DRAW);
	glBindBuffer(GL_ARRAY_BUFFER, 0);
	}

	void Allocation::data(const void *data)
	{
	memcpy(mPtr, data, mType->getSizeBytes());
	}

	void Allocation::subData(uint32_t xoff, uint32_t count, const void *data)
	{
	uint32_t eSize = mType->getElementSizeBytes();
	uint8_t * ptr = static_cast<uint8_t *>(mPtr);
	ptr += eSize * xoff;
	memcpy(ptr, data, count * eSize);
	}

	void Allocation::subData(uint32_t xoff, uint32_t yoff,
	uint32_t w, uint32_t h, const void *data)
	{
	uint32_t eSize = mType->getElementSizeBytes();
	uint32_t lineSize = eSize * w;
	uint32_t destW = mType->getDimX();

	const uint8_t src = static_cast<const uint8_t >(data);
	uint8_t dst = static_cast<uint8_t >(mPtr);
	dst += eSize * (xoff + yoff * destW);
	for (uint32_t line=yoff; line < (yoff+h); line++) {
	uint8_t * ptr = static_cast<uint8_t *>(mPtr);
	memcpy(dst, src, lineSize);
	src += lineSize;
	dst += destW * eSize;
	}
	}

	void Allocation::subData(uint32_t xoff, uint32_t yoff, uint32_t zoff,
	uint32_t w, uint32_t h, uint32_t d, const void *data)
	{
	}



	/////////////////
	//


	namespace android {
	namespace renderscript {

	RsAllocation rsi_AllocationCreateTyped(Context *rsc, RsType vtype)
	{
	const Type * type = static_cast<const Type *>(vtype);

	Allocation * alloc = new Allocation(type);
	return alloc;
	}

	RsAllocation rsi_AllocationCreatePredefSized(Context *rsc, RsElementPredefined t, size_t count)
	{
	RsElement e = rsi_ElementGetPredefined(rsc, t);
	return rsi_AllocationCreateSized(rsc, e, count);
	}

	RsAllocation rsi_AllocationCreateSized(Context *rsc, RsElement e, size_t count)
	{
	Type * type = new Type();
	type->setDimX(count);
	type->setElement(static_cast<Element *>(e));
	type->compute();
	return rsi_AllocationCreateTyped(rsc, type);
	}

	void rsi_AllocationUploadToTexture(Context *rsc, RsAllocation va, uint32_t baseMipLevel)
	{
	Allocation alloc = static_cast<Allocation >(va);
	alloc->uploadToTexture(baseMipLevel);
	}

	void rsi_AllocationUploadToBufferObject(Context *rsc, RsAllocation va)
	{
	Allocation alloc = static_cast<Allocation >(va);
	alloc->uploadToBufferObject();
	}

	void rsi_AllocationDestroy(Context *rsc, RsAllocation)
	{
	}

	static void mip(const Adapter2D &out, const Adapter2D &in)
	{
	uint32_t w = out.getDimX();
	uint32_t h = out.getDimY();

	for (uint32_t y=0; y < w; y++) {
	uint16_t oPtr = static_cast<uint16_t >(out.getElement(0, y));
	const uint16_t i1 = static_cast<uint16_t >(in.getElement(0, y*2));
	const uint16_t i2 = static_cast<uint16_t >(in.getElement(0, y*2+1));

	for (uint32_t x=0; x < h; x++) {
	*oPtr = rsBoxFilter565(i1[0], i1[2], i2[0], i2[1]);
	oPtr ++;
	i1 += 2;
	i2 += 2;
	}
	}

	}


	typedef void (ElementConverter_t)(void dst, const void *src, uint32_t count);

	static void elementConverter_cpy_16(void dst, const void src, uint32_t count)
	{
	memcpy(dst, src, count * 2);
	}
	static void elementConverter_cpy_8(void dst, const void src, uint32_t count)
	{
	memcpy(dst, src, count);
	}
	static void elementConverter_cpy_32(void dst, const void src, uint32_t count)
	{
	memcpy(dst, src, count * 4);
	}


	static void elementConverter_888_to_565(void dst, const void src, uint32_t count)
	{
	uint16_t d = static_cast<uint16_t >(dst);
	const uint8_t s = static_cast<const uint8_t >(src);

	while(count--) {
	*d = rs888to565(s[0], s[1], s[2]);
	d++;
	s+= 3;
	}
	}

	static void elementConverter_8888_to_565(void dst, const void src, uint32_t count)
	{
	uint16_t d = static_cast<uint16_t >(dst);
	const uint8_t s = static_cast<const uint8_t >(src);

	while(count--) {
	*d = rs888to565(s[0], s[1], s[2]);
	d++;
	s+= 4;
	}
	}

	static ElementConverter_t pickConverter(RsElementPredefined dstFmt, RsElementPredefined srcFmt)
	{
	if ((dstFmt == RS_ELEMENT_RGB_565) &&
	(srcFmt == RS_ELEMENT_RGB_565)) {
	return elementConverter_cpy_16;
	}

	if ((dstFmt == RS_ELEMENT_RGB_565) &&
	(srcFmt == RS_ELEMENT_RGB_888)) {
	return elementConverter_888_to_565;
	}

	if ((dstFmt == RS_ELEMENT_RGB_565) &&
	(srcFmt == RS_ELEMENT_RGBA_8888)) {
	return elementConverter_8888_to_565;
	}


	LOGE("pickConverter, unsuported combo");
	return 0;
	}


	RsAllocation rsi_AllocationCreateFromBitmap(Context rsc, uint32_t w, uint32_t h, RsElementPredefined dstFmt, RsElementPredefined srcFmt, bool genMips, const void data)
	{
	rsi_TypeBegin(rsc, rsi_ElementGetPredefined(rsc, RS_ELEMENT_RGB_565));
	rsi_TypeAdd(rsc, RS_DIMENSION_X, w);
	rsi_TypeAdd(rsc, RS_DIMENSION_Y, h);
	if (genMips) {
	rsi_TypeAdd(rsc, RS_DIMENSION_LOD, 1);
	}
	RsType type = rsi_TypeCreate(rsc);

	RsAllocation vTexAlloc = rsi_AllocationCreateTyped(rsc, type);
	Allocation texAlloc = static_cast<Allocation >(vTexAlloc);
	if (texAlloc == NULL) {
	LOGE("Memory allocation failure");
	return NULL;
	}
	texAlloc->incRef();

	ElementConverter_t cvt = pickConverter(dstFmt, srcFmt);
	cvt(texAlloc->getPtr(), data, w * h);

	if (genMips) {
	Adapter2D adapt(texAlloc);
	Adapter2D adapt2(texAlloc);
	for(uint32_t lod=0; lod < (texAlloc->getType()->getLODCount() -1); lod++) {
	adapt.setLOD(lod);
	adapt2.setLOD(lod + 1);
	mip(adapt2, adapt);
	}
	}

	return texAlloc;
	}

	RsAllocation rsi_AllocationCreateFromFile(Context rsc, const char file, bool genMips)
	{
	typedef struct _Win3xBitmapHeader
	{
	uint16_t type;
	uint32_t totalSize;
	uint32_t reserved;
	uint32_t offset;
	int32_t hdrSize; /* Size of this header in bytes */
	int32_t width; /* Image width in pixels */
	int32_t height; /* Image height in pixels */
	int16_t planes; /* Number of color planes */
	int16_t bpp; /* Number of bits per pixel */
	/* Fields added for Windows 3.x follow this line */
	int32_t compression; /* Compression methods used */
	int32_t sizeOfBitmap; /* Size of bitmap in bytes */
	int32_t horzResolution; /* Horizontal resolution in pixels per meter */
	int32_t vertResolution; /* Vertical resolution in pixels per meter */
	int32_t colorsUsed; /* Number of colors in the image */
	int32_t colorsImportant; /* Minimum number of important colors */
	} __attribute__((__packed__)) WIN3XBITMAPHEADER;

	_Win3xBitmapHeader hdr;

	FILE *f = fopen(file, "rb");
	if (f == NULL) {
	LOGE("rsAllocationCreateFromBitmap failed to open file %s", file);
	return NULL;
	}
	memset(&hdr, 0, sizeof(hdr));
	fread(&hdr, sizeof(hdr), 1, f);

	if (hdr.bpp != 24) {
	LOGE("Unsuported BMP type");
	fclose(f);
	return NULL;
	}

	int32_t texWidth = rsHigherPow2(hdr.width);
	int32_t texHeight = rsHigherPow2(hdr.height);

	rsi_TypeBegin(rsc, rsi_ElementGetPredefined(rsc, RS_ELEMENT_RGB_565));
	rsi_TypeAdd(rsc, RS_DIMENSION_X, texWidth);
	rsi_TypeAdd(rsc, RS_DIMENSION_Y, texHeight);
	if (genMips) {
	rsi_TypeAdd(rsc, RS_DIMENSION_LOD, 1);
	}
	RsType type = rsi_TypeCreate(rsc);

	RsAllocation vTexAlloc = rsi_AllocationCreateTyped(rsc, type);
	Allocation texAlloc = static_cast<Allocation >(vTexAlloc);
	texAlloc->incRef();
	if (texAlloc == NULL) {
	LOGE("Memory allocation failure");
	fclose(f);
	return NULL;
	}

	// offset to letterbox if height is not pow2
	Adapter2D adapt(texAlloc);
	uint8_t * fileInBuf = new uint8_t[texWidth * 3];
	uint32_t yOffset = (hdr.width - hdr.height) / 2;
	uint16_t tmp = static_cast<uint16_t >(adapt.getElement(0, yOffset));

	for (int y=0; y < hdr.height; y++) {
	fseek(f, hdr.offset + (yhdr.width3), SEEK_SET);
	fread(fileInBuf, 1, hdr.width * 3, f);
	for(int x=0; x < hdr.width; x++) {
	tmp = rs888to565(fileInBuf[x3], fileInBuf[x3 + 1], fileInBuf[x3 + 2]);
	tmp++;
	}
	}

	fclose(f);
	delete [] fileInBuf;

	if (genMips) {
	Adapter2D adapt2(texAlloc);
	for(uint32_t lod=0; lod < (texAlloc->getType()->getLODCount() -1); lod++) {
	adapt.setLOD(lod);
	adapt2.setLOD(lod + 1);
	mip(adapt2, adapt);
	}
	}

	return texAlloc;
	}


	void rsi_AllocationData(Context rsc, RsAllocation va, const void data)
	{
	Allocation a = static_cast<Allocation >(va);
	a->data(data);
	}

	void rsi_Allocation1DSubData(Context rsc, RsAllocation va, uint32_t xoff, uint32_t count, const void data)
	{
	Allocation a = static_cast<Allocation >(va);
	a->subData(xoff, count, data);
	}

	void rsi_Allocation2DSubData(Context rsc, RsAllocation va, uint32_t xoff, uint32_t yoff, uint32_t w, uint32_t h, const void data)
	{
	Allocation a = static_cast<Allocation >(va);
	a->subData(xoff, yoff, w, h, data);
	}


	}
	}