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Diffstat (limited to 'camera/NV12_resize.cpp')
| -rw-r--r-- | camera/NV12_resize.cpp | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/camera/NV12_resize.cpp b/camera/NV12_resize.cpp new file mode 100644 index 0000000..971ee38 --- /dev/null +++ b/camera/NV12_resize.cpp @@ -0,0 +1,290 @@ +/* + * Copyright (C) Texas Instruments - http://www.ti.com/ + * + * 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 "NV12_resize.h" + +#ifdef LOG_TAG +#undef LOG_TAG +#endif +#define LOG_TAG "NV12_resize" + +#define STRIDE 4096 + +/*========================================================================== +* Function Name : VT_resizeFrame_Video_opt2_lp +* +* Description : Resize a yuv frame. +* +* Input(s) : input_img_ptr -> Input Image Structure +* : output_img_ptr -> Output Image Structure +* : cropout -> crop structure +* +* Value Returned : mmBool -> FALSE on error TRUE on success +* NOTE: +* Not tested for crop funtionallity. +* faster version. +============================================================================*/ +mmBool +VT_resizeFrame_Video_opt2_lp( + structConvImage* i_img_ptr, /* Points to the input image */ + structConvImage* o_img_ptr, /* Points to the output image */ + IC_rect_type* cropout, /* how much to resize to in final image */ + mmUint16 dummy /* Transparent pixel value */ + ) { + LOG_FUNCTION_NAME; + + mmUint16 row,col; + mmUint32 resizeFactorX; + mmUint32 resizeFactorY; + + mmUint16 x, y; + + mmUchar* ptr8; + mmUchar *ptr8Cb, *ptr8Cr; + + mmUint16 xf, yf; + mmUchar* inImgPtrY; + mmUchar* inImgPtrU; + mmUchar* inImgPtrV; + mmUint32 cox, coy, codx, cody; + mmUint16 idx,idy, idxC; + + if ( i_img_ptr->uWidth == o_img_ptr->uWidth ) { + if ( i_img_ptr->uHeight == o_img_ptr->uHeight ) { + CAMHAL_LOGV("************************f(i_img_ptr->uHeight == o_img_ptr->uHeight) are same *********************\n"); + CAMHAL_LOGV("************************(i_img_ptr->width == %d" , i_img_ptr->uWidth ); + CAMHAL_LOGV("************************(i_img_ptr->uHeight == %d" , i_img_ptr->uHeight ); + CAMHAL_LOGV("************************(o_img_ptr->width == %d" ,o_img_ptr->uWidth ); + CAMHAL_LOGV("************************(o_img_ptr->uHeight == %d" , o_img_ptr->uHeight ); + } + } + + if ( !i_img_ptr || !i_img_ptr->imgPtr || !o_img_ptr || !o_img_ptr->imgPtr ) { + CAMHAL_LOGE("Image Point NULL"); + return false; + } + + inImgPtrY = (mmUchar *) i_img_ptr->imgPtr + i_img_ptr->uOffset; + inImgPtrU = (mmUchar *) i_img_ptr->clrPtr + i_img_ptr->uOffset/2; + inImgPtrV = (mmUchar*)inImgPtrU + 1; + + if ( !cropout ) { + cox = 0; + coy = 0; + codx = o_img_ptr->uWidth; + cody = o_img_ptr->uHeight; + } else { + cox = cropout->x; + coy = cropout->y; + codx = cropout->uWidth; + cody = cropout->uHeight; + } + idx = i_img_ptr->uWidth; + idy = i_img_ptr->uHeight; + + /* make sure valid input size */ + if ( idx < 1 || idy < 1 || i_img_ptr->uStride < 1 ) { + CAMHAL_LOGE("idx or idy less then 1 idx = %d idy = %d stride = %d", idx, idy, i_img_ptr->uStride); + return false; + } + + resizeFactorX = ((idx-1)<<9) / codx; + resizeFactorY = ((idy-1)<<9) / cody; + + if( i_img_ptr->eFormat != IC_FORMAT_YCbCr420_lp || + o_img_ptr->eFormat != IC_FORMAT_YCbCr420_lp ) { + CAMHAL_LOGE("eFormat not supported"); + return false; + } + + ptr8 = (mmUchar*)o_img_ptr->imgPtr + cox + coy*o_img_ptr->uWidth; + + ////////////////////////////for Y////////////////////////// + for ( row = 0; row < cody; row++ ) { + mmUchar *pu8Yrow1 = NULL; + mmUchar *pu8Yrow2 = NULL; + y = (mmUint16) ((mmUint32) (row*resizeFactorY) >> 9); + yf = (mmUchar) ((mmUint32)((row*resizeFactorY) >> 6) & 0x7); + pu8Yrow1 = inImgPtrY + (y) * i_img_ptr->uStride; + pu8Yrow2 = pu8Yrow1 + i_img_ptr->uStride; + + for ( col = 0; col < codx; col++ ) { + mmUchar in11, in12, in21, in22; + mmUchar *pu8ptr1 = NULL; + mmUchar *pu8ptr2 = NULL; + mmUchar w; + mmUint16 accum_1; + //mmUint32 accum_W; + + x = (mmUint16) ((mmUint32) (col*resizeFactorX) >> 9); + xf = (mmUchar) ((mmUint32) ((col*resizeFactorX) >> 6) & 0x7); + + //accum_W = 0; + accum_1 = 0; + + pu8ptr1 = pu8Yrow1 + (x); + pu8ptr2 = pu8Yrow2 + (x); + + /* A pixel */ + //in = *(inImgPtrY + (y)*idx + (x)); + in11 = *(pu8ptr1); + + w = bWeights[xf][yf][0]; + accum_1 = (w * in11); + //accum_W += (w); + + /* B pixel */ + //in = *(inImgPtrY + (y)*idx + (x+1)); + in12 = *(pu8ptr1+1); + w = bWeights[xf][yf][1]; + accum_1 += (w * in12); + //accum_W += (w); + + /* C pixel */ + //in = *(inImgPtrY + (y+1)*idx + (x)); + in21 = *(pu8ptr2); + w = bWeights[xf][yf][3]; + accum_1 += (w * in21); + //accum_W += (w); + + /* D pixel */ + //in = *(inImgPtrY + (y+1)*idx + (x+1)); + in22 = *(pu8ptr2+1); + w = bWeights[xf][yf][2]; + accum_1 += (w * in22); + //accum_W += (w); + + /* divide by sum of the weights */ + //accum_1 /= (accum_W); + //accum_1 = (accum_1/64); + accum_1 = (accum_1>>6); + *ptr8 = (mmUchar)accum_1 ; + + ptr8++; + } + ptr8 = ptr8 + (o_img_ptr->uStride - codx); + } + ////////////////////////////for Y////////////////////////// + + ///////////////////////////////for Cb-Cr////////////////////// + + ptr8Cb = (mmUchar*)o_img_ptr->clrPtr + cox + coy*o_img_ptr->uWidth; + + ptr8Cr = (mmUchar*)(ptr8Cb+1); + + idxC = (idx>>1); + for ( row = 0; row < (((cody)>>1)); row++ ) { + mmUchar *pu8Cbr1 = NULL; + mmUchar *pu8Cbr2 = NULL; + mmUchar *pu8Crr1 = NULL; + mmUchar *pu8Crr2 = NULL; + + y = (mmUint16) ((mmUint32) (row*resizeFactorY) >> 9); + yf = (mmUchar) ((mmUint32)((row*resizeFactorY) >> 6) & 0x7); + + pu8Cbr1 = inImgPtrU + (y) * i_img_ptr->uStride; + pu8Cbr2 = pu8Cbr1 + i_img_ptr->uStride; + pu8Crr1 = inImgPtrV + (y) * i_img_ptr->uStride; + pu8Crr2 = pu8Crr1 + i_img_ptr->uStride; + + for ( col = 0; col < (((codx)>>1)); col++ ) { + mmUchar in11, in12, in21, in22; + mmUchar *pu8Cbc1 = NULL; + mmUchar *pu8Cbc2 = NULL; + mmUchar *pu8Crc1 = NULL; + mmUchar *pu8Crc2 = NULL; + + mmUchar w; + mmUint16 accum_1Cb, accum_1Cr; + //mmUint32 accum_WCb, accum_WCr; + + x = (mmUint16) ((mmUint32) (col*resizeFactorX) >> 9); + xf = (mmUchar) ((mmUint32) ((col*resizeFactorX) >> 6) & 0x7); + + //accum_WCb = accum_WCr = 0; + accum_1Cb = accum_1Cr = 0; + + pu8Cbc1 = pu8Cbr1 + (x*2); + pu8Cbc2 = pu8Cbr2 + (x*2); + pu8Crc1 = pu8Crr1 + (x*2); + pu8Crc2 = pu8Crr2 + (x*2); + + /* A pixel */ + w = bWeights[xf][yf][0]; + + in11 = *(pu8Cbc1); + accum_1Cb = (w * in11); + // accum_WCb += (w); + + in11 = *(pu8Crc1); + accum_1Cr = (w * in11); + //accum_WCr += (w); + + /* B pixel */ + w = bWeights[xf][yf][1]; + + in12 = *(pu8Cbc1+2); + accum_1Cb += (w * in12); + //accum_WCb += (w); + + in12 = *(pu8Crc1+2); + accum_1Cr += (w * in12); + //accum_WCr += (w); + + /* C pixel */ + w = bWeights[xf][yf][3]; + + in21 = *(pu8Cbc2); + accum_1Cb += (w * in21); + //accum_WCb += (w); + + in21 = *(pu8Crc2); + accum_1Cr += (w * in21); + //accum_WCr += (w); + + /* D pixel */ + w = bWeights[xf][yf][2]; + + in22 = *(pu8Cbc2+2); + accum_1Cb += (w * in22); + //accum_WCb += (w); + + in22 = *(pu8Crc2+2); + accum_1Cr += (w * in22); + //accum_WCr += (w); + + /* divide by sum of the weights */ + //accum_1Cb /= (accum_WCb); + accum_1Cb = (accum_1Cb>>6); + *ptr8Cb = (mmUchar)accum_1Cb ; + + accum_1Cr = (accum_1Cr >> 6); + *ptr8Cr = (mmUchar)accum_1Cr ; + + ptr8Cb++; + ptr8Cr++; + + ptr8Cb++; + ptr8Cr++; + } + ptr8Cb = ptr8Cb + (o_img_ptr->uStride-codx); + ptr8Cr = ptr8Cr + (o_img_ptr->uStride-codx); + } + ///////////////////For Cb- Cr//////////////////////////////////////// + + CAMHAL_LOGV("success"); + return true; +} |