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/*
* 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.
*/
/**
*************************************************************************
* @file M4AIR_API.c
* @brief Area of Interest Resizer API
*************************************************************************
*/
#define M4AIR_YUV420_FORMAT_SUPPORTED
#define M4AIR_YUV420A_FORMAT_SUPPORTED
/************************* COMPILATION CHECKS ***************************/
#ifndef M4AIR_YUV420_FORMAT_SUPPORTED
#ifndef M4AIR_BGR565_FORMAT_SUPPORTED
#ifndef M4AIR_RGB565_FORMAT_SUPPORTED
#ifndef M4AIR_BGR888_FORMAT_SUPPORTED
#ifndef M4AIR_RGB888_FORMAT_SUPPORTED
#ifndef M4AIR_JPG_FORMAT_SUPPORTED
#error "Please define at least one input format for the AIR component"
#endif
#endif
#endif
#endif
#endif
#endif
/******************************* INCLUDES *******************************/
#include "M4OSA_Types.h"
#include "M4OSA_Error.h"
#include "M4OSA_CoreID.h"
#include "M4OSA_Mutex.h"
#include "M4OSA_Memory.h"
#include "M4VIFI_FiltersAPI.h"
#include "M4AIR_API.h"
/************************ M4AIR INTERNAL TYPES DEFINITIONS ***********************/
/**
******************************************************************************
* enum M4AIR_States
* @brief The following enumeration defines the internal states of the AIR.
******************************************************************************
*/
typedef enum
{
M4AIR_kCreated, /**< State after M4AIR_create has been called */
M4AIR_kConfigured /**< State after M4AIR_configure has been called */
}M4AIR_States;
/**
******************************************************************************
* struct M4AIR_InternalContext
* @brief The following structure is the internal context of the AIR.
******************************************************************************
*/
typedef struct
{
M4AIR_States m_state; /**< Internal state */
M4AIR_InputFormatType m_inputFormat; /**< Input format like YUV420Planar,
RGB565, JPG, etc ... */
M4AIR_Params m_params; /**< Current input Parameter of the processing */
M4OSA_UInt32 u32_x_inc[4]; /**< ratio between input and ouput width for YUV */
M4OSA_UInt32 u32_y_inc[4]; /**< ratio between input and ouput height for YUV */
M4OSA_UInt32 u32_x_accum_start[4]; /**< horizontal initial accumulator value */
M4OSA_UInt32 u32_y_accum_start[4]; /**< Vertical initial accumulator value */
M4OSA_UInt32 u32_x_accum[4]; /**< save of horizontal accumulator value */
M4OSA_UInt32 u32_y_accum[4]; /**< save of vertical accumulator value */
M4OSA_UInt8* pu8_data_in[4]; /**< Save of input plane pointers
in case of stripe mode */
M4OSA_UInt32 m_procRows; /**< Number of processed rows,
used in stripe mode only */
M4OSA_Bool m_bOnlyCopy; /**< Flag to know if we just perform a copy
or a bilinear interpolation */
M4OSA_Bool m_bFlipX; /**< Depend on output orientation, used during
processing to revert processing order in X
coordinates */
M4OSA_Bool m_bFlipY; /**< Depend on output orientation, used during
processing to revert processing order in Y
coordinates */
M4OSA_Bool m_bRevertXY; /**< Depend on output orientation, used during
processing to revert X and Y processing order
(+-90° rotation) */
}M4AIR_InternalContext;
/********************************* MACROS *******************************/
#define M4ERR_CHECK_NULL_RETURN_VALUE(retval, pointer)\
if ((pointer) == M4OSA_NULL) return ((M4OSA_ERR)(retval));
/********************** M4AIR PUBLIC API IMPLEMENTATION ********************/
/**
******************************************************************************
* M4OSA_ERR M4AIR_create(M4OSA_Context* pContext,M4AIR_InputFormatType inputFormat)
* @brief This function initialize an instance of the AIR.
* @param pContext: (IN/OUT) Address of the context to create
* @param inputFormat: (IN) input format type.
* @return M4NO_ERROR: there is no error
* @return M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only). Invalid formatType
* @return M4ERR_ALLOC: No more memory is available
******************************************************************************
*/
M4OSA_ERR M4AIR_create(M4OSA_Context* pContext,M4AIR_InputFormatType inputFormat)
{
M4OSA_ERR err = M4NO_ERROR ;
M4AIR_InternalContext* pC = M4OSA_NULL ;
/* Check that the address on the context is not NULL */
M4ERR_CHECK_NULL_RETURN_VALUE(M4ERR_PARAMETER, pContext) ;
*pContext = M4OSA_NULL ;
/* Internal Context creation */
pC = (M4AIR_InternalContext*)M4OSA_32bitAlignedMalloc(sizeof(M4AIR_InternalContext),
M4AIR,(M4OSA_Char *)"AIR internal context") ;
M4ERR_CHECK_NULL_RETURN_VALUE(M4ERR_ALLOC, pC) ;
/* Check if the input format is supported */
switch(inputFormat)
{
#ifdef M4AIR_YUV420_FORMAT_SUPPORTED
case M4AIR_kYUV420P:
break ;
#endif
#ifdef M4AIR_YUV420A_FORMAT_SUPPORTED
case M4AIR_kYUV420AP:
break ;
#endif
default:
err = M4ERR_AIR_FORMAT_NOT_SUPPORTED;
goto M4AIR_create_cleanup ;
}
/**< Save input format and update state */
pC->m_inputFormat = inputFormat;
pC->m_state = M4AIR_kCreated;
/* Return the context to the caller */
*pContext = pC ;
return M4NO_ERROR ;
M4AIR_create_cleanup:
/* Error management : we destroy the context if needed */
if(M4OSA_NULL != pC)
{
free(pC) ;
}
*pContext = M4OSA_NULL ;
return err ;
}
/**
******************************************************************************
* M4OSA_ERR M4AIR_cleanUp(M4OSA_Context pContext)
* @brief This function destroys an instance of the AIR component
* @param pContext: (IN) Context identifying the instance to destroy
* @return M4NO_ERROR: there is no error
* @return M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only).
* @return M4ERR_STATE: Internal state is incompatible with this function call.
******************************************************************************
*/
M4OSA_ERR M4AIR_cleanUp(M4OSA_Context pContext)
{
M4AIR_InternalContext* pC = (M4AIR_InternalContext*)pContext ;
M4ERR_CHECK_NULL_RETURN_VALUE(M4ERR_PARAMETER, pContext) ;
/**< Check state */
if((M4AIR_kCreated != pC->m_state)&&(M4AIR_kConfigured != pC->m_state))
{
return M4ERR_STATE;
}
free(pC) ;
return M4NO_ERROR ;
}
/**
******************************************************************************
* M4OSA_ERR M4AIR_configure(M4OSA_Context pContext, M4AIR_Params* pParams)
* @brief This function will configure the AIR.
* @note It will set the input and output coordinates and sizes,
* and indicates if we will proceed in stripe or not.
* In case a M4AIR_get in stripe mode was on going, it will cancel this previous
* processing and reset the get process.
* @param pContext: (IN) Context identifying the instance
* @param pParams->m_bOutputStripe:(IN) Stripe mode.
* @param pParams->m_inputCoord: (IN) X,Y coordinates of the first valid pixel in input.
* @param pParams->m_inputSize: (IN) input ROI size.
* @param pParams->m_outputSize: (IN) output size.
* @return M4NO_ERROR: there is no error
* @return M4ERR_ALLOC: No more memory space to add a new effect.
* @return M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only).
* @return M4ERR_AIR_FORMAT_NOT_SUPPORTED: the requested input format is not supported.
******************************************************************************
*/
M4OSA_ERR M4AIR_configure(M4OSA_Context pContext, M4AIR_Params* pParams)
{
M4AIR_InternalContext* pC = (M4AIR_InternalContext*)pContext ;
M4OSA_UInt32 i,u32_width_in, u32_width_out, u32_height_in, u32_height_out;
M4OSA_UInt32 nb_planes;
M4ERR_CHECK_NULL_RETURN_VALUE(M4ERR_PARAMETER, pContext) ;
if(M4AIR_kYUV420AP == pC->m_inputFormat)
{
nb_planes = 4;
}
else
{
nb_planes = 3;
}
/**< Check state */
if((M4AIR_kCreated != pC->m_state)&&(M4AIR_kConfigured != pC->m_state))
{
return M4ERR_STATE;
}
/** Save parameters */
pC->m_params = *pParams;
/* Check for the input&output width and height are even */
if( ((pC->m_params.m_inputSize.m_height)&0x1) ||
((pC->m_params.m_inputSize.m_height)&0x1))
{
return M4ERR_AIR_ILLEGAL_FRAME_SIZE;
}
if( ((pC->m_params.m_inputSize.m_width)&0x1) ||
((pC->m_params.m_inputSize.m_width)&0x1))
{
return M4ERR_AIR_ILLEGAL_FRAME_SIZE;
}
if(((pC->m_params.m_inputSize.m_width) == (pC->m_params.m_outputSize.m_width))
&&((pC->m_params.m_inputSize.m_height) == (pC->m_params.m_outputSize.m_height)))
{
/**< No resize in this case, we will just copy input in output */
pC->m_bOnlyCopy = M4OSA_TRUE;
}
else
{
pC->m_bOnlyCopy = M4OSA_FALSE;
/**< Initialize internal variables used for resize filter */
for(i=0;i<nb_planes;i++)
{
u32_width_in = ((i==0)||(i==3))?pC->m_params.m_inputSize.m_width:\
(pC->m_params.m_inputSize.m_width+1)>>1;
u32_height_in = ((i==0)||(i==3))?pC->m_params.m_inputSize.m_height:\
(pC->m_params.m_inputSize.m_height+1)>>1;
u32_width_out = ((i==0)||(i==3))?pC->m_params.m_outputSize.m_width:\
(pC->m_params.m_outputSize.m_width+1)>>1;
u32_height_out = ((i==0)||(i==3))?pC->m_params.m_outputSize.m_height:\
(pC->m_params.m_outputSize.m_height+1)>>1;
/* Compute horizontal ratio between src and destination width.*/
if (u32_width_out >= u32_width_in)
{
pC->u32_x_inc[i] = ((u32_width_in-1) * 0x10000) / (u32_width_out-1);
}
else
{
pC->u32_x_inc[i] = (u32_width_in * 0x10000) / (u32_width_out);
}
/* Compute vertical ratio between src and destination height.*/
if (u32_height_out >= u32_height_in)
{
pC->u32_y_inc[i] = ((u32_height_in - 1) * 0x10000) / (u32_height_out-1);
}
else
{
pC->u32_y_inc[i] = (u32_height_in * 0x10000) / (u32_height_out);
}
/*
Calculate initial accumulator value : u32_y_accum_start.
u32_y_accum_start is coded on 15 bits, and represents a value between 0 and 0.5
*/
if (pC->u32_y_inc[i] >= 0x10000)
{
/*
Keep the fractionnal part, assimung that integer part is coded
on the 16 high bits and the fractionnal on the 15 low bits
*/
pC->u32_y_accum_start[i] = pC->u32_y_inc[i] & 0xffff;
if (!pC->u32_y_accum_start[i])
{
pC->u32_y_accum_start[i] = 0x10000;
}
pC->u32_y_accum_start[i] >>= 1;
}
else
{
pC->u32_y_accum_start[i] = 0;
}
/**< Take into account that Y coordinate can be odd
in this case we have to put a 0.5 offset
for U and V plane as there a 2 times sub-sampled vs Y*/
if((pC->m_params.m_inputCoord.m_y&0x1)&&((i==1)||(i==2)))
{
pC->u32_y_accum_start[i] += 0x8000;
}
/*
Calculate initial accumulator value : u32_x_accum_start.
u32_x_accum_start is coded on 15 bits, and represents a value between
0 and 0.5
*/
if (pC->u32_x_inc[i] >= 0x10000)
{
pC->u32_x_accum_start[i] = pC->u32_x_inc[i] & 0xffff;
if (!pC->u32_x_accum_start[i])
{
pC->u32_x_accum_start[i] = 0x10000;
}
pC->u32_x_accum_start[i] >>= 1;
}
else
{
pC->u32_x_accum_start[i] = 0;
}
/**< Take into account that X coordinate can be odd
in this case we have to put a 0.5 offset
for U and V plane as there a 2 times sub-sampled vs Y*/
if((pC->m_params.m_inputCoord.m_x&0x1)&&((i==1)||(i==2)))
{
pC->u32_x_accum_start[i] += 0x8000;
}
}
}
/**< Reset variable used for stripe mode */
pC->m_procRows = 0;
/**< Initialize var for X/Y processing order according to orientation */
pC->m_bFlipX = M4OSA_FALSE;
pC->m_bFlipY = M4OSA_FALSE;
pC->m_bRevertXY = M4OSA_FALSE;
switch(pParams->m_outputOrientation)
{
case M4COMMON_kOrientationTopLeft:
break;
case M4COMMON_kOrientationTopRight:
pC->m_bFlipX = M4OSA_TRUE;
break;
case M4COMMON_kOrientationBottomRight:
pC->m_bFlipX = M4OSA_TRUE;
pC->m_bFlipY = M4OSA_TRUE;
break;
case M4COMMON_kOrientationBottomLeft:
pC->m_bFlipY = M4OSA_TRUE;
break;
case M4COMMON_kOrientationLeftTop:
pC->m_bRevertXY = M4OSA_TRUE;
break;
case M4COMMON_kOrientationRightTop:
pC->m_bRevertXY = M4OSA_TRUE;
pC->m_bFlipY = M4OSA_TRUE;
break;
case M4COMMON_kOrientationRightBottom:
pC->m_bRevertXY = M4OSA_TRUE;
pC->m_bFlipX = M4OSA_TRUE;
pC->m_bFlipY = M4OSA_TRUE;
break;
case M4COMMON_kOrientationLeftBottom:
pC->m_bRevertXY = M4OSA_TRUE;
pC->m_bFlipX = M4OSA_TRUE;
break;
default:
return M4ERR_PARAMETER;
}
/**< Update state */
pC->m_state = M4AIR_kConfigured;
return M4NO_ERROR ;
}
/**
******************************************************************************
* M4OSA_ERR M4AIR_get(M4OSA_Context pContext, M4VIFI_ImagePlane* pIn, M4VIFI_ImagePlane* pOut)
* @brief This function will provide the requested resized area of interest according to
* settings provided in M4AIR_configure.
* @note In case the input format type is JPEG, input plane(s)
* in pIn is not used. In normal mode, dimension specified in output plane(s) structure
* must be the same than the one specified in M4AIR_configure. In stripe mode, only the
* width will be the same, height will be taken as the stripe height (typically 16).
* In normal mode, this function is call once to get the full output picture.
* In stripe mode, it is called for each stripe till the whole picture has been
* retrieved,and the position of the output stripe in the output picture
* is internally incremented at each step.
* Any call to M4AIR_configure during stripe process will reset this one to the
* beginning of the output picture.
* @param pContext: (IN) Context identifying the instance
* @param pIn: (IN) Plane structure containing input Plane(s).
* @param pOut: (IN/OUT) Plane structure containing output Plane(s).
* @return M4NO_ERROR: there is no error
* @return M4ERR_ALLOC: No more memory space to add a new effect.
* @return M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only).
******************************************************************************
*/
M4OSA_ERR M4AIR_get(M4OSA_Context pContext, M4VIFI_ImagePlane* pIn, M4VIFI_ImagePlane* pOut)
{
M4AIR_InternalContext* pC = (M4AIR_InternalContext*)pContext ;
M4OSA_UInt32 i,j,k,u32_x_frac,u32_y_frac,u32_x_accum,u32_y_accum,u32_shift;
M4OSA_UInt8 *pu8_data_in, *pu8_data_in_org, *pu8_data_in_tmp, *pu8_data_out;
M4OSA_UInt8 *pu8_src_top;
M4OSA_UInt8 *pu8_src_bottom;
M4OSA_UInt32 u32_temp_value;
M4OSA_Int32 i32_tmp_offset;
M4OSA_UInt32 nb_planes;
M4ERR_CHECK_NULL_RETURN_VALUE(M4ERR_PARAMETER, pContext) ;
/**< Check state */
if(M4AIR_kConfigured != pC->m_state)
{
return M4ERR_STATE;
}
if(M4AIR_kYUV420AP == pC->m_inputFormat)
{
nb_planes = 4;
}
else
{
nb_planes = 3;
}
/**< Loop on each Plane */
for(i=0;i<nb_planes;i++)
{
/* Set the working pointers at the beginning of the input/output data field */
u32_shift = ((i==0)||(i==3))?0:1; /**< Depend on Luma or Chroma */
if((M4OSA_FALSE == pC->m_params.m_bOutputStripe)\
||((M4OSA_TRUE == pC->m_params.m_bOutputStripe)&&(0 == pC->m_procRows)))
{
/**< For input, take care about ROI */
pu8_data_in = pIn[i].pac_data + pIn[i].u_topleft \
+ (pC->m_params.m_inputCoord.m_x>>u32_shift)
+ (pC->m_params.m_inputCoord.m_y >> u32_shift) * pIn[i].u_stride;
/** Go at end of line/column in case X/Y scanning is flipped */
if(M4OSA_TRUE == pC->m_bFlipX)
{
pu8_data_in += ((pC->m_params.m_inputSize.m_width)>>u32_shift) -1 ;
}
if(M4OSA_TRUE == pC->m_bFlipY)
{
pu8_data_in += ((pC->m_params.m_inputSize.m_height>>u32_shift) -1)\
* pIn[i].u_stride;
}
/**< Initialize accumulators in case we are using it (bilinear interpolation) */
if( M4OSA_FALSE == pC->m_bOnlyCopy)
{
pC->u32_x_accum[i] = pC->u32_x_accum_start[i];
pC->u32_y_accum[i] = pC->u32_y_accum_start[i];
}
}
else
{
/**< In case of stripe mode for other than first stripe, we need to recover input
pointer from internal context */
pu8_data_in = pC->pu8_data_in[i];
}
/**< In every mode, output data are at the beginning of the output plane */
pu8_data_out = pOut[i].pac_data + pOut[i].u_topleft;
/**< Initialize input offset applied after each pixel */
if(M4OSA_FALSE == pC->m_bFlipY)
{
i32_tmp_offset = pIn[i].u_stride;
}
else
{
i32_tmp_offset = -pIn[i].u_stride;
}
/**< In this case, no bilinear interpolation is needed as input and output dimensions
are the same */
if( M4OSA_TRUE == pC->m_bOnlyCopy)
{
/**< No +-90° rotation */
if(M4OSA_FALSE == pC->m_bRevertXY)
{
/**< No flip on X abscissa */
if(M4OSA_FALSE == pC->m_bFlipX)
{
/**< Loop on each row */
for(j=0;j<pOut[i].u_height;j++)
{
/**< Copy one whole line */
memcpy((void *)pu8_data_out, (void *)pu8_data_in,
pOut[i].u_width);
/**< Update pointers */
pu8_data_out += pOut[i].u_stride;
if(M4OSA_FALSE == pC->m_bFlipY)
{
pu8_data_in += pIn[i].u_stride;
}
else
{
pu8_data_in -= pIn[i].u_stride;
}
}
}
else
{
/**< Loop on each row */
for(j=0;j<pOut[i].u_height;j++)
{
/**< Loop on each pixel of 1 row */
for(k=0;k<pOut[i].u_width;k++)
{
*pu8_data_out++ = *pu8_data_in--;
}
/**< Update pointers */
pu8_data_out += (pOut[i].u_stride - pOut[i].u_width);
pu8_data_in += pOut[i].u_width + i32_tmp_offset;
}
}
}
/**< Here we have a +-90° rotation */
else
{
/**< Loop on each row */
for(j=0;j<pOut[i].u_height;j++)
{
pu8_data_in_tmp = pu8_data_in;
/**< Loop on each pixel of 1 row */
for(k=0;k<pOut[i].u_width;k++)
{
*pu8_data_out++ = *pu8_data_in_tmp;
/**< Update input pointer in order to go to next/past line */
pu8_data_in_tmp += i32_tmp_offset;
}
/**< Update pointers */
pu8_data_out += (pOut[i].u_stride - pOut[i].u_width);
if(M4OSA_FALSE == pC->m_bFlipX)
{
pu8_data_in ++;
}
else
{
pu8_data_in --;
}
}
}
}
/**< Bilinear interpolation */
else
{
if(3 != i) /**< other than alpha plane */
{
/**No +-90° rotation */
if(M4OSA_FALSE == pC->m_bRevertXY)
{
/**< Loop on each row */
for(j=0;j<pOut[i].u_height;j++)
{
/* Vertical weight factor */
u32_y_frac = (pC->u32_y_accum[i]>>12)&15;
/* Reinit horizontal weight factor */
u32_x_accum = pC->u32_x_accum_start[i];
if(M4OSA_TRUE == pC->m_bFlipX)
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_x_frac = (u32_x_accum >> 12)&15; /* Fraction of Horizontal
weight factor */
pu8_src_top = (pu8_data_in - (u32_x_accum >> 16)) -1 ;
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[1]*(16-u32_x_frac) +
pu8_src_top[0]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[1]*(16-u32_x_frac) +
pu8_src_bottom[0]*u32_x_frac)*u32_y_frac )>>8);
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update horizontal accumulator */
u32_x_accum += pC->u32_x_inc[i];
}
}
else
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_x_frac = (u32_x_accum >> 12)&15; /* Fraction of Horizontal
weight factor */
pu8_src_top = pu8_data_in + (u32_x_accum >> 16);
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[0]*(16-u32_x_frac) +
pu8_src_top[1]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[0]*(16-u32_x_frac) +
pu8_src_bottom[1]*u32_x_frac)*u32_y_frac )>>8);
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update horizontal accumulator */
u32_x_accum += pC->u32_x_inc[i];
}
}
pu8_data_out += pOut[i].u_stride - pOut[i].u_width;
/* Update vertical accumulator */
pC->u32_y_accum[i] += pC->u32_y_inc[i];
if (pC->u32_y_accum[i]>>16)
{
pu8_data_in = pu8_data_in + (pC->u32_y_accum[i] >> 16) * i32_tmp_offset;
pC->u32_y_accum[i] &= 0xffff;
}
}
}
/** +-90° rotation */
else
{
pu8_data_in_org = pu8_data_in;
/**< Loop on each output row */
for(j=0;j<pOut[i].u_height;j++)
{
/* horizontal weight factor */
u32_x_frac = (pC->u32_x_accum[i]>>12)&15;
/* Reinit accumulator */
u32_y_accum = pC->u32_y_accum_start[i];
if(M4OSA_TRUE == pC->m_bFlipX)
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_y_frac = (u32_y_accum >> 12)&15; /* Vertical weight factor */
pu8_src_top = (pu8_data_in - (pC->u32_x_accum[i] >> 16)) - 1;
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[1]*(16-u32_x_frac) +
pu8_src_top[0]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[1]*(16-u32_x_frac) +
pu8_src_bottom[0]*u32_x_frac)*u32_y_frac )>>8);
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update vertical accumulator */
u32_y_accum += pC->u32_y_inc[i];
if (u32_y_accum>>16)
{
pu8_data_in = pu8_data_in + (u32_y_accum >> 16) * i32_tmp_offset;
u32_y_accum &= 0xffff;
}
}
}
else
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_y_frac = (u32_y_accum >> 12)&15; /* Vertical weight factor */
pu8_src_top = pu8_data_in + (pC->u32_x_accum[i] >> 16);
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[0]*(16-u32_x_frac) +
pu8_src_top[1]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[0]*(16-u32_x_frac) +
pu8_src_bottom[1]*u32_x_frac)*u32_y_frac )>>8);
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update vertical accumulator */
u32_y_accum += pC->u32_y_inc[i];
if (u32_y_accum>>16)
{
pu8_data_in = pu8_data_in + (u32_y_accum >> 16) * i32_tmp_offset;
u32_y_accum &= 0xffff;
}
}
}
pu8_data_out += pOut[i].u_stride - pOut[i].u_width;
/* Update horizontal accumulator */
pC->u32_x_accum[i] += pC->u32_x_inc[i];
pu8_data_in = pu8_data_in_org;
}
}
}/** 3 != i */
else
{
/**No +-90° rotation */
if(M4OSA_FALSE == pC->m_bRevertXY)
{
/**< Loop on each row */
for(j=0;j<pOut[i].u_height;j++)
{
/* Vertical weight factor */
u32_y_frac = (pC->u32_y_accum[i]>>12)&15;
/* Reinit horizontal weight factor */
u32_x_accum = pC->u32_x_accum_start[i];
if(M4OSA_TRUE == pC->m_bFlipX)
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_x_frac = (u32_x_accum >> 12)&15; /* Fraction of Horizontal
weight factor */
pu8_src_top = (pu8_data_in - (u32_x_accum >> 16)) -1 ;
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[1]*(16-u32_x_frac) +
pu8_src_top[0]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[1]*(16-u32_x_frac) +
pu8_src_bottom[0]*u32_x_frac)*u32_y_frac )>>8);
u32_temp_value= (u32_temp_value >> 7)*0xff;
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update horizontal accumulator */
u32_x_accum += pC->u32_x_inc[i];
}
}
else
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_x_frac = (u32_x_accum >> 12)&15; /* Fraction of Horizontal
weight factor */
pu8_src_top = pu8_data_in + (u32_x_accum >> 16);
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[0]*(16-u32_x_frac) +
pu8_src_top[1]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[0]*(16-u32_x_frac) +
pu8_src_bottom[1]*u32_x_frac)*u32_y_frac )>>8);
u32_temp_value= (u32_temp_value >> 7)*0xff;
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update horizontal accumulator */
u32_x_accum += pC->u32_x_inc[i];
}
}
pu8_data_out += pOut[i].u_stride - pOut[i].u_width;
/* Update vertical accumulator */
pC->u32_y_accum[i] += pC->u32_y_inc[i];
if (pC->u32_y_accum[i]>>16)
{
pu8_data_in = pu8_data_in + (pC->u32_y_accum[i] >> 16) * i32_tmp_offset;
pC->u32_y_accum[i] &= 0xffff;
}
}
} /**< M4OSA_FALSE == pC->m_bRevertXY */
/** +-90° rotation */
else
{
pu8_data_in_org = pu8_data_in;
/**< Loop on each output row */
for(j=0;j<pOut[i].u_height;j++)
{
/* horizontal weight factor */
u32_x_frac = (pC->u32_x_accum[i]>>12)&15;
/* Reinit accumulator */
u32_y_accum = pC->u32_y_accum_start[i];
if(M4OSA_TRUE == pC->m_bFlipX)
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_y_frac = (u32_y_accum >> 12)&15; /* Vertical weight factor */
pu8_src_top = (pu8_data_in - (pC->u32_x_accum[i] >> 16)) - 1;
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[1]*(16-u32_x_frac) +
pu8_src_top[0]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[1]*(16-u32_x_frac) +
pu8_src_bottom[0]*u32_x_frac)*u32_y_frac )>>8);
u32_temp_value= (u32_temp_value >> 7)*0xff;
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update vertical accumulator */
u32_y_accum += pC->u32_y_inc[i];
if (u32_y_accum>>16)
{
pu8_data_in = pu8_data_in + (u32_y_accum >> 16) * i32_tmp_offset;
u32_y_accum &= 0xffff;
}
}
}
else
{
/**< Loop on each output pixel in a row */
for(k=0;k<pOut[i].u_width;k++)
{
u32_y_frac = (u32_y_accum >> 12)&15; /* Vertical weight factor */
pu8_src_top = pu8_data_in + (pC->u32_x_accum[i] >> 16);
pu8_src_bottom = pu8_src_top + i32_tmp_offset;
/* Weighted combination */
u32_temp_value = (M4VIFI_UInt8)(((pu8_src_top[0]*(16-u32_x_frac) +
pu8_src_top[1]*u32_x_frac)*(16-u32_y_frac) +
(pu8_src_bottom[0]*(16-u32_x_frac) +
pu8_src_bottom[1]*u32_x_frac)*u32_y_frac )>>8);
u32_temp_value= (u32_temp_value >> 7)*0xff;
*pu8_data_out++ = (M4VIFI_UInt8)u32_temp_value;
/* Update vertical accumulator */
u32_y_accum += pC->u32_y_inc[i];
if (u32_y_accum>>16)
{
pu8_data_in = pu8_data_in + (u32_y_accum >> 16) * i32_tmp_offset;
u32_y_accum &= 0xffff;
}
}
}
pu8_data_out += pOut[i].u_stride - pOut[i].u_width;
/* Update horizontal accumulator */
pC->u32_x_accum[i] += pC->u32_x_inc[i];
pu8_data_in = pu8_data_in_org;
}
} /**< M4OSA_TRUE == pC->m_bRevertXY */
}/** 3 == i */
}
/**< In case of stripe mode, save current input pointer */
if(M4OSA_TRUE == pC->m_params.m_bOutputStripe)
{
pC->pu8_data_in[i] = pu8_data_in;
}
}
/**< Update number of processed rows, reset it if we have finished
with the whole processing */
pC->m_procRows += pOut[0].u_height;
if(M4OSA_FALSE == pC->m_bRevertXY)
{
if(pC->m_params.m_outputSize.m_height <= pC->m_procRows) pC->m_procRows = 0;
}
else
{
if(pC->m_params.m_outputSize.m_width <= pC->m_procRows) pC->m_procRows = 0;
}
return M4NO_ERROR ;
}
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