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PL286/external/libmpeg2/common/impeg2_format_conv.c

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/******************************************************************************
*
* Copyright (C) 2015 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.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
/*****************************************************************************/
/* */
/* File Name : impeg2_format_conv .c */
/* */
/* Description : Contains functions needed to convert the images in */
/* different color spaces to yuv 422i color space */
/* */
/* List of Functions : YUV420toYUV420() */
/* YUV420toYUV422I() */
/* YUV420toYUV420SP_VU() */
/* YUV420toYUV420SP_UU() */
/* */
/* Issues / Problems : None */
/* */
/* Revision History : */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 28 08 2007 Naveen Kumar T Draft */
/* */
/*****************************************************************************/
/*****************************************************************************/
/* File Includes */
/*****************************************************************************/
/* System include files */
/* User include files */
#include <stdio.h>
#include <string.h>
#include "iv_datatypedef.h"
#include "iv.h"
#include "ithread.h"
#include "iv_datatypedef.h"
#include "impeg2_macros.h"
#include "impeg2_buf_mgr.h"
#include "impeg2_disp_mgr.h"
#include "impeg2_defs.h"
#include "impeg2_platform_macros.h"
#include "impeg2_job_queue.h"
#include "impeg2_format_conv.h"
/*****************************************************************************/
/* */
/* Function Name : impeg2_copy_frm_yuv420p() */
/* */
/* Description : This function performs conversion from YUV420 to */
/* YUV422I color space. */
/* */
/* Inputs : pu1_src_y, - UWORD8 pointer to source y plane. */
/* pu1_src_u, - UWORD8 pointer to source u plane. */
/* pu1_src_v, - UWORD8 pointer to source v plane. */
/* pu1_dst_y, - UWORD8 pointer to dest y plane. */
/* pu1_dst_u, - UWORD8 pointer to dest u plane. */
/* pu1_dst_v, - UWORD8 pointer to dest v plane. */
/* u4_width, - Width of image. */
/* u4_height, - Height of image. */
/* u4_src_stride_y - Stride in pixels of source Y plane. */
/* u4_src_stride_u - Stride in pixels of source U plane. */
/* u4_src_stride_v - Stride in pixels of source V plane. */
/* u4_dst_stride_y - Stride in pixels of dest Y plane. */
/* u4_dst_stride_u - Stride in pixels of dest U plane. */
/* u4_dst_stride_v - Stride in pixels of dest V plane. */
/* */
/* Globals : None */
/* */
/* Processing : One row is processed at a time. The one iteration of the */
/* code will rearrange pixels into YUV422 interleaved */
/* format. */
/* */
/* Outputs : None */
/* */
/* Returns : None */
/* */
/* Issues : None */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 29 08 2007 Naveen Kumar T Draft */
/* */
/*****************************************************************************/
void impeg2_copy_frm_yuv420p(UWORD8 *pu1_src_y,
UWORD8 *pu1_src_u,
UWORD8 *pu1_src_v,
UWORD8 *pu1_dst_y,
UWORD8 *pu1_dst_u,
UWORD8 *pu1_dst_v,
UWORD32 u4_width,
UWORD32 u4_height,
UWORD32 u4_src_stride_y,
UWORD32 u4_src_stride_u,
UWORD32 u4_src_stride_v,
UWORD32 u4_dst_stride_y,
UWORD32 u4_dst_stride_u,
UWORD32 u4_dst_stride_v)
{
WORD32 i4_cnt;
WORD32 i4_y_height = (WORD32) u4_height;
WORD32 i4_uv_height = u4_height >> 1;
WORD32 i4_uv_width = u4_width >> 1;
for(i4_cnt = 0; i4_cnt < i4_y_height; i4_cnt++)
{
memcpy(pu1_dst_y, pu1_src_y, u4_width);
pu1_dst_y += (u4_dst_stride_y);
pu1_src_y += (u4_src_stride_y);
}
for(i4_cnt = 0; i4_cnt < i4_uv_height; i4_cnt++)
{
memcpy(pu1_dst_u, pu1_src_u, i4_uv_width);
pu1_dst_u += (u4_dst_stride_u);
pu1_src_u += (u4_src_stride_u);
}
for(i4_cnt = 0; i4_cnt < i4_uv_height; i4_cnt++)
{
memcpy(pu1_dst_v, pu1_src_v, i4_uv_width);
pu1_dst_v += (u4_dst_stride_v);
pu1_src_v += (u4_src_stride_v);
}
}
/*****************************************************************************/
/* */
/* Function Name : impeg2_fmt_conv_yuv420p_to_yuv422ile() */
/* */
/* Description : This function performs conversion from YUV420 to */
/* YUV422I color space. */
/* */
/* Inputs : pu1_y - UWORD8 pointer to y plane. */
/* pu1_u - UWORD8 pointer to u plane. */
/* pu1_v - UWORD8 pointer to u plane. */
/* pu2_yuv422i - UWORD16 pointer to yuv422iimage. */
/* u4_width - Width of the Y plane. */
/* u4_height - Height of the Y plane. */
/* u4_stride_y - Stride in pixels of Y plane. */
/* u4_stride_u - Stride in pixels of U plane. */
/* u4_stride_v - Stride in pixels of V plane. */
/* u4_stride_yuv422i- Stride in pixels of yuv422i image. */
/* */
/* Globals : None */
/* */
/* Processing : One row is processed at a time. The one iteration of the */
/* code will rearrange pixels into YUV422 interleaved */
/* format. */
/* */
/* Outputs : None */
/* */
/* Returns : None */
/* */
/* Issues : None */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 29 08 2007 Naveen Kumar T Draft */
/* */
/*****************************************************************************/
void impeg2_fmt_conv_yuv420p_to_yuv422ile(register UWORD8 *pu1_y,
register UWORD8 *pu1_u,
register UWORD8 *pu1_v,
void *pv_yuv422i,
UWORD32 u4_width,
UWORD32 u4_height,
UWORD32 u4_stride_y,
UWORD32 u4_stride_u,
UWORD32 u4_stride_v,
UWORD32 u4_stride_yuv422i)
{
/* Declare local variables */
register WORD16 i,j;
register UWORD16 u2_offset1,u2_offset2,u2_offset3,u2_offset_yuv422i;
register UWORD8 u1_y1,u1_uv;
register UWORD32 u4_pixel;
register UWORD16 u2_width_cnt;
register UWORD32 *pu4_yuv422i;
UWORD8 u1_flag; /* This flag is used to indicate wether the row is even or odd */
u1_flag=0x0; /* Intialize it with 0 indicating odd row */
/* Calculate the offsets necessary to make input and output buffers to point next row */
u2_offset1 = u4_stride_y - u4_width;
u2_offset2 = u4_stride_u - ((u4_width + 1) >> 1);
u2_offset3 = u4_stride_v - ((u4_width + 1) >> 1);
u2_offset_yuv422i = (u4_stride_yuv422i >> 1) -((u4_width + 1) >> 1);
/* Type cast the output pointer to UWORD32 */
pu4_yuv422i = (UWORD32 *)pv_yuv422i;
/* Calculate the loop counter for inner loop */
u2_width_cnt = u4_width >> 1;
/* Run the loop for height of input buffer */
for(i = u4_height; i > 0; i--)
{
/* Run the loop for width/2 */
for(j = u2_width_cnt; j > 0; j--)
{
/* Store the value in output buffer in the order U0Y0V0Y1U2Y2V2Y3.... */
/* Load Y0 */
u1_y1 = *pu1_y++;
/* Load Y1 */
u4_pixel = *pu1_y++;
/* Load V0 */
u1_uv = *pu1_v++;
u4_pixel = (u4_pixel << 8) + u1_uv;
/* Load U0 */
u1_uv = *pu1_u++;
u4_pixel = (u4_pixel << 8) + u1_y1;
u4_pixel = (u4_pixel << 8) + u1_uv;
*pu4_yuv422i++ = u4_pixel;
}
/* Incase of width is odd number take care of last pixel */
if(u4_width & 0x1)
{
/* Store the value in output buffer in the order U0Y0V0Y1U2Y2V2Y3.... */
/* Load Y0 */
u1_y1 = *pu1_y++;
/* Load V0 */
u1_uv = *pu1_v++;
/* Take Y0 as Y1 */
u4_pixel = u1_y1;
u4_pixel = (u4_pixel << 8) + u1_uv;
/* Load U0 */
u1_uv = *pu1_u++;
u4_pixel = (u4_pixel << 8) + u1_y1;
u4_pixel = (u4_pixel << 8) + u1_uv;
*pu4_yuv422i++ = u4_pixel;
}
/* Make the pointers to buffer to point to next row */
pu1_y = pu1_y + u2_offset1;
if(!u1_flag)
{
/* Restore the pointers of u and v buffer back so that the row of pixels are also */
/* Processed with same row of u and values again */
pu1_u = pu1_u - ((u4_width + 1) >> 1);
pu1_v = pu1_v - ((u4_width + 1) >> 1);
}
else
{
/* Adjust the u and v buffer pointers so that they will point to next row */
pu1_u = pu1_u + u2_offset2;
pu1_v = pu1_v + u2_offset3;
}
/* Adjust the output buffer pointer for next row */
pu4_yuv422i = pu4_yuv422i + u2_offset_yuv422i;
/* Toggle the flag to convert between odd and even row */
u1_flag= u1_flag ^ 0x1;
}
}
void impeg2_fmt_conv_yuv420p_to_yuv420sp_vu(UWORD8 *pu1_y, UWORD8 *pu1_u, UWORD8 *pu1_v,
UWORD8 *pu1_dest_y, UWORD8 *pu1_dest_uv,
UWORD32 u4_height, UWORD32 u4_width,UWORD32 u4_stridey,
UWORD32 u4_strideu, UWORD32 u4_stridev,
UWORD32 u4_dest_stride_y, UWORD32 u4_dest_stride_uv,
UWORD32 u4_convert_uv_only
)
{
UWORD8 *pu1_src,*pu1_dst;
UWORD8 *pu1_src_u, *pu1_src_v;
UWORD16 i;
UWORD32 u2_width_uv;
UWORD32 u4_dest_inc_y=0, u4_dest_inc_uv=0;
/* Copy Y buffer */
pu1_dst = (UWORD8 *)pu1_dest_y;
pu1_src = (UWORD8 *)pu1_y;
u4_dest_inc_y = u4_dest_stride_y;
u4_dest_inc_uv = u4_dest_stride_uv;
if(0 == u4_convert_uv_only)
{
for(i = 0; i < u4_height; i++)
{
memcpy((void *)pu1_dst,(void *)pu1_src, u4_width);
pu1_dst += u4_dest_inc_y;
pu1_src += u4_stridey;
}
}
/* Interleave Cb and Cr buffers */
pu1_src_u = pu1_u;
pu1_src_v = pu1_v;
pu1_dst = pu1_dest_uv ;
u4_height = (u4_height + 1) >> 1;
u2_width_uv = (u4_width + 1) >> 1;
for(i = 0; i < u4_height ; i++)
{
UWORD32 j;
for(j = 0; j < u2_width_uv; j++)
{
*pu1_dst++ = *pu1_src_v++;
*pu1_dst++ = *pu1_src_u++;
}
pu1_dst += u4_dest_inc_uv - u4_width;
pu1_src_u += u4_strideu - u2_width_uv;
pu1_src_v += u4_stridev - u2_width_uv;
}
}
void impeg2_fmt_conv_yuv420p_to_yuv420sp_uv(UWORD8 *pu1_y, UWORD8 *pu1_u, UWORD8 *pu1_v,
UWORD8 *pu1_dest_y, UWORD8 *pu1_dest_uv,
UWORD32 u4_height, UWORD32 u4_width,UWORD32 u4_stridey,
UWORD32 u4_strideu, UWORD32 u4_stridev,
UWORD32 u4_dest_stride_y, UWORD32 u4_dest_stride_uv,
UWORD32 u4_convert_uv_only)
{
UWORD8 *pu1_src,*pu1_dst;
UWORD8 *pu1_src_u, *pu1_src_v;
UWORD16 i;
UWORD32 u2_width_uv;
UWORD32 u4_dest_inc_y=0, u4_dest_inc_uv=0;
/* Copy Y buffer */
pu1_dst = (UWORD8 *)pu1_dest_y;
pu1_src = (UWORD8 *)pu1_y;
u4_dest_inc_y = u4_dest_stride_y;
u4_dest_inc_uv = u4_dest_stride_uv;
if(0 == u4_convert_uv_only)
{
for(i = 0; i < u4_height; i++)
{
memcpy((void *)pu1_dst,(void *)pu1_src, u4_width);
pu1_dst += u4_dest_inc_y;
pu1_src += u4_stridey;
}
}
/* Interleave Cb and Cr buffers */
pu1_src_u = pu1_u;
pu1_src_v = pu1_v;
pu1_dst = pu1_dest_uv ;
u4_height = (u4_height + 1) >> 1;
u2_width_uv = (u4_width + 1) >> 1;
for(i = 0; i < u4_height ; i++)
{
UWORD32 j;
for(j = 0; j < u2_width_uv; j++)
{
*pu1_dst++ = *pu1_src_u++;
*pu1_dst++ = *pu1_src_v++;
}
pu1_dst += u4_dest_inc_uv - u4_width;
pu1_src_u += u4_strideu - u2_width_uv;
pu1_src_v += u4_stridev - u2_width_uv;
}
}