/src/libhevc/decoder/ihevcd_fmt_conv.c

Source
/******************************************************************************
*
* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
*
* 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
*  ihevcd_fmt_conv.c
*
* @brief
*  Contains functions for format conversion or frame copy of output buffer
*
* @author
*  Harish
*
* @par List of Functions:
*
* @remarks
*  None
*
*******************************************************************************
*/
/*****************************************************************************/
/* File Includes                                                             */
/*****************************************************************************/
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>

#include "ihevc_typedefs.h"
#include "iv.h"
#include "ivd.h"
#include "ihevcd_cxa.h"
#include "ithread.h"

#include "ihevc_defs.h"
#include "ihevc_debug.h"
#include "ihevc_structs.h"
#include "ihevc_macros.h"
#include "ihevc_platform_macros.h"
#include "ihevc_cabac_tables.h"
#include "ihevc_disp_mgr.h"

#include "ihevcd_defs.h"
#include "ihevcd_function_selector.h"
#include "ihevcd_structs.h"
#include "ihevcd_error.h"
#include "ihevcd_nal.h"
#include "ihevcd_bitstream.h"
#include "ihevcd_fmt_conv.h"
#include "ihevcd_profile.h"

/* SIMD variants of format conversion modules do not support width less than 32 */
#define MIN_FMT_CONV_SIMD_WIDTH 32
/**
*******************************************************************************
*
* @brief Function used from copying a 420SP buffer
*
* @par   Description
* Function used from copying a 420SP buffer
*
* @param[in] pu1_y_src
*   Input Y pointer
*
* @param[in] pu1_uv_src
*   Input UV pointer (UV is interleaved either in UV or VU format)
*
* @param[in] pu1_y_dst
*   Output Y pointer
*
* @param[in] pu1_uv_dst
*   Output UV pointer (UV is interleaved in the same format as that of input)
*
* @param[in] wd
*   Width
*
* @param[in] ht
*   Height
*
* @param[in] src_y_strd
*   Input Y Stride
*
* @param[in] src_uv_strd
*   Input UV stride
*
* @param[in] dst_y_strd
*   Output Y stride
*
* @param[in] dst_uv_strd
*   Output UV stride
*
* @returns None
*
* @remarks In case there is a need to perform partial frame copy then
* by passion appropriate source and destination pointers and appropriate
* values for wd and ht it can be done
*
*******************************************************************************
*/

void ihevcd_fmt_conv_420sp_to_420sp(UWORD8 *pu1_y_src,
                                    UWORD8 *pu1_uv_src,
                                    UWORD8 *pu1_y_dst,
                                    UWORD8 *pu1_uv_dst,
                                    WORD32 wd,
                                    WORD32 ht,
                                    WORD32 src_y_strd,
                                    WORD32 src_uv_strd,
                                    WORD32 dst_y_strd,
                                    WORD32 dst_uv_strd)
{
    UWORD8 *pu1_src, *pu1_dst;
    WORD32 num_rows, num_cols, src_strd, dst_strd;
    WORD32 i;

    /* copy luma */
    pu1_src = (UWORD8 *)pu1_y_src;
    pu1_dst = (UWORD8 *)pu1_y_dst;

    num_rows = ht;
    num_cols = wd;

    src_strd = src_y_strd;
    dst_strd = dst_y_strd;

    for(i = 0; i < num_rows; i++)
    {
        memcpy(pu1_dst, pu1_src, num_cols);
        pu1_dst += dst_strd;
        pu1_src += src_strd;
    }

    /* copy U and V */
    pu1_src = (UWORD8 *)pu1_uv_src;
    pu1_dst = (UWORD8 *)pu1_uv_dst;

    num_rows = ht >> 1;
    num_cols = wd;

    src_strd = src_uv_strd;
    dst_strd = dst_uv_strd;

    for(i = 0; i < num_rows; i++)
    {
        memcpy(pu1_dst, pu1_src, num_cols);
        pu1_dst += dst_strd;
        pu1_src += src_strd;
    }
    return;
}


/**
*******************************************************************************
*
* @brief Function used from copying a 400 buffer
*
* @par   Description
* Function used from copying a 400 buffer
*
* @param[in] pu1_y_src
*   Input Y pointer
*
* @param[in] pu1_y_dst
*   Output Y pointer
*
* @param[in] wd
*   Width
*
* @param[in] ht
*   Height
*
* @param[in] src_y_strd
*   Input Y Stride
*
* @param[in] dst_y_strd
*   Output Y stride
*
* @returns None
*
* @remarks In case there is a need to perform partial frame copy then
* by passion appropriate source and destination pointers and appropriate
* values for wd and ht it can be done
*
*******************************************************************************
*/

void ihevcd_fmt_conv_luma_copy(UWORD8 *pu1_y_src,
                               UWORD8 *pu1_y_dst,
                               WORD32 wd,
                               WORD32 ht,
                               WORD32 src_y_strd,
                               WORD32 dst_y_strd)
{
    UWORD8 *pu1_src, *pu1_dst;
    WORD32 num_rows, num_cols, src_strd, dst_strd;
    WORD32 i;

    /* copy luma */
    pu1_src = (UWORD8 *)pu1_y_src;
    pu1_dst = (UWORD8 *)pu1_y_dst;

    num_rows = ht;
    num_cols = wd;

    src_strd = src_y_strd;
    dst_strd = dst_y_strd;

    for(i = 0; i < num_rows; i++)
    {
        memcpy(pu1_dst, pu1_src, num_cols);
        pu1_dst += dst_strd;
        pu1_src += src_strd;
    }
    return;
}

/**
*******************************************************************************
*
* @brief Function to convert a YUV 4:0:0 buffer to YUV 4:2:0 buffer
*
* @par   Description
* This function handles the format conversion from a 4:0:0 input buffer to a
* 4:2:0 output buffer. It copies the Luma (Y) plane directly and synthesizes
* the Chroma (U and V) planes by initializing them to a neutral gray value (128).
*
* @param[in] pu1_y_src
*   Input Y pointer
*
* @param[out] pu1_y_dst_tmp
*   Output Y pointer
*
* @param[out] pu1_u_dst_tmp
*   Output Chroma U pointer
*
* @param[out] pu1_v_dst_tmp
*   Output Chroma V pointer
*
* @param[in] ps_codec
*   Pointer to the codec structure
*
* @param[in] num_rows
*   Number of rows (height) to process.
*
* @returns None
*
* @remarks The Chroma (U and V) planes are initialized to 128, which represents
* a neutral gray in 8-bit YUV, effectively 'zeroing out' the color information
* present in the 4:0:0 (grayscale) source. The Luma plane is copied using
* ihevcd_fmt_conv_400_to_400.
*
*******************************************************************************
*/
void ihevcd_fmt_conv_400_to_420p(UWORD8 *pu1_y_src,
                                 UWORD8 *pu1_y_dst,
                                 UWORD8 *pu1_u_dst,
                                 UWORD8 *pu1_v_dst,
                                 WORD32 wd,
                                 WORD32 ht,
                                 WORD32 src_y_strd,
                                 WORD32 dst_y_strd,
                                 WORD32 dst_uv_strd)
{
    ihevcd_fmt_conv_luma_copy(pu1_y_src, pu1_y_dst, wd, ht, src_y_strd, dst_y_strd);
    for(int i = 0; i < ALIGN2(ht) / 2; i++)
    {
        memset(pu1_u_dst, 128, ALIGN2(wd) / 2);
        memset(pu1_v_dst, 128, ALIGN2(wd) / 2);
        pu1_u_dst += dst_uv_strd;
        pu1_v_dst += dst_uv_strd;
    }
    return;
}

/**
*******************************************************************************
*
* @brief Function used from copying a 420SP buffer
*
* @par   Description
* Function used from copying a 420SP buffer
*
* @param[in] pu1_y_src
*   Input Y pointer
*
* @param[in] pu1_uv_src
*   Input UV pointer (UV is interleaved either in UV or VU format)
*
* @param[in] pu1_y_dst
*   Output Y pointer
*
* @param[in] pu1_uv_dst
*   Output UV pointer (UV is interleaved in the same format as that of input)
*
* @param[in] wd
*   Width
*
* @param[in] ht
*   Height
*
* @param[in] src_y_strd
*   Input Y Stride
*
* @param[in] src_uv_strd
*   Input UV stride
*
* @param[in] dst_y_strd
*   Output Y stride
*
* @param[in] dst_uv_strd
*   Output UV stride
*
* @returns None
*
* @remarks In case there is a need to perform partial frame copy then
* by passion appropriate source and destination pointers and appropriate
* values for wd and ht it can be done
*
*******************************************************************************
*/
void ihevcd_fmt_conv_420sp_to_420sp_swap_uv(UWORD8 *pu1_y_src,
                                            UWORD8 *pu1_uv_src,
                                            UWORD8 *pu1_y_dst,
                                            UWORD8 *pu1_uv_dst,
                                            WORD32 wd,
                                            WORD32 ht,
                                            WORD32 src_y_strd,
                                            WORD32 src_uv_strd,
                                            WORD32 dst_y_strd,
                                            WORD32 dst_uv_strd)
{
    UWORD8 *pu1_src, *pu1_dst;
    WORD32 num_rows, num_cols, src_strd, dst_strd;
    WORD32 i;

    /* copy luma */
    pu1_src = (UWORD8 *)pu1_y_src;
    pu1_dst = (UWORD8 *)pu1_y_dst;

    num_rows = ht;
    num_cols = wd;

    src_strd = src_y_strd;
    dst_strd = dst_y_strd;

    for(i = 0; i < num_rows; i++)
    {
        memcpy(pu1_dst, pu1_src, num_cols);
        pu1_dst += dst_strd;
        pu1_src += src_strd;
    }

    /* copy U and V */
    pu1_src = (UWORD8 *)pu1_uv_src;
    pu1_dst = (UWORD8 *)pu1_uv_dst;

    num_rows = ht >> 1;
    num_cols = wd;

    src_strd = src_uv_strd;
    dst_strd = dst_uv_strd;

    for(i = 0; i < num_rows; i++)
    {
        WORD32 j;
        for(j = 0; j < num_cols; j += 2)
        {
            pu1_dst[j + 0] = pu1_src[j + 1];
            pu1_dst[j + 1] = pu1_src[j + 0];
        }
        pu1_dst += dst_strd;
        pu1_src += src_strd;
    }
    return;
}
/**
*******************************************************************************
*
* @brief Function used from copying a 420SP buffer
*
* @par   Description
* Function used from copying a 420SP buffer
*
* @param[in] pu1_y_src
*   Input Y pointer
*
* @param[in] pu1_uv_src
*   Input UV pointer (UV is interleaved either in UV or VU format)
*
* @param[in] pu1_y_dst
*   Output Y pointer
*
* @param[in] pu1_u_dst
*   Output U pointer
*
* @param[in] pu1_v_dst
*   Output V pointer
*
* @param[in] wd
*   Width
*
* @param[in] ht
*   Height
*
* @param[in] src_y_strd
*   Input Y Stride
*
* @param[in] src_uv_strd
*   Input UV stride
*
* @param[in] dst_y_strd
*   Output Y stride
*
* @param[in] dst_uv_strd
*   Output UV stride
*
* @param[in] is_u_first
*   Flag to indicate if U is the first byte in input chroma part
*
* @returns none
*
* @remarks In case there is a need to perform partial frame copy then
* by passion appropriate source and destination pointers and appropriate
* values for wd and ht it can be done
*
*******************************************************************************
*/


void ihevcd_fmt_conv_420sp_to_420p(UWORD8 *pu1_y_src,
                                   UWORD8 *pu1_uv_src,
                                   UWORD8 *pu1_y_dst,
                                   UWORD8 *pu1_u_dst,
                                   UWORD8 *pu1_v_dst,
                                   WORD32 wd,
                                   WORD32 ht,
                                   WORD32 src_y_strd,
                                   WORD32 src_uv_strd,
                                   WORD32 dst_y_strd,
                                   WORD32 dst_uv_strd,
                                   WORD32 is_u_first,
                                   WORD32 disable_luma_copy)
{
    UWORD8 *pu1_src, *pu1_dst;
    UWORD8 *pu1_u_src, *pu1_v_src;
    WORD32 num_rows, num_cols, src_strd, dst_strd;
    WORD32 i, j;

    if(0 == disable_luma_copy)
    {
        /* copy luma */
        pu1_src = (UWORD8 *)pu1_y_src;
        pu1_dst = (UWORD8 *)pu1_y_dst;

        num_rows = ht;
        num_cols = wd;

        src_strd = src_y_strd;
        dst_strd = dst_y_strd;

        for(i = 0; i < num_rows; i++)
        {
            memcpy(pu1_dst, pu1_src, num_cols);
            pu1_dst += dst_strd;
            pu1_src += src_strd;
        }
    }
    /* de-interleave U and V and copy to destination */
    if(is_u_first)
    {
        pu1_u_src = (UWORD8 *)pu1_uv_src;
        pu1_v_src = (UWORD8 *)pu1_uv_src + 1;
    }
    else
    {
        pu1_u_src = (UWORD8 *)pu1_uv_src + 1;
        pu1_v_src = (UWORD8 *)pu1_uv_src;
    }


    num_rows = ht >> 1;
    num_cols = wd >> 1;

    src_strd = src_uv_strd;
    dst_strd = dst_uv_strd;

    for(i = 0; i < num_rows; i++)
    {
        for(j = 0; j < num_cols; j++)
        {
            pu1_u_dst[j] = pu1_u_src[j * 2];
            pu1_v_dst[j] = pu1_v_src[j * 2];
        }

        pu1_u_dst += dst_strd;
        pu1_v_dst += dst_strd;
        pu1_u_src += src_strd;
        pu1_v_src += src_strd;
    }
    return;
}

/**
*******************************************************************************
*
* @brief Function to convert a YUV 4:4:4 sp buffer to YUV 4:4:4 planar buffer
*
* @par   Description
* This function handles the format conversion from a 4:4:4 semi planar input buffer
* to a 4:4:4 planar output buffer.
*
* @param[in] pu1_y_src
*   Input Y pointer
*
* @param[in] pu1_uv_src
*   Input UV pointer (UV is interleaved)
*
* @param[in] pu1_y_dst
*   Output Y pointer
*
* @param[in] pu1_u_dst
*   Output U pointer
*
* @param[in] pu1_v_dst
*   Output V pointer
*
* @param[in] wd
*   Width
*
* @param[in] ht
*   Height
*
* @param[in] src_y_strd
*   Input Y Stride
*
* @param[in] src_uv_strd
*   Input UV stride
*
* @param[in] dst_y_strd
*   Output Y stride
*
* @param[in] dst_uv_strd
*   Output U or V stride
*
* @returns none
*
* @remarks none
*
*******************************************************************************
*/
void ihevcd_fmt_conv_444sp_to_444p(UWORD8 *pu1_y_src,
                                   UWORD8 *pu1_uv_src,
                                   UWORD8 *pu1_y_dst,
                                   UWORD8 *pu1_u_dst,
                                   UWORD8 *pu1_v_dst,
                                   WORD32 wd,
                                   WORD32 ht,
                                   WORD32 src_y_strd,
                                   WORD32 src_uv_strd,
                                   WORD32 dst_y_strd,
                                   WORD32 dst_uv_strd)
{
    ihevcd_fmt_conv_luma_copy(pu1_y_src, pu1_y_dst, wd, ht, src_y_strd, dst_y_strd);

    /* de-interleave U and V and copy to destination */
    UWORD8 *pu1_u_src = (UWORD8*)pu1_uv_src;
    UWORD8 *pu1_v_src = (UWORD8*)pu1_uv_src + 1;

    for(WORD32 i = 0; i < ht; i++)
    {
        for(WORD32 j = 0; j < wd; j++)
        {
            pu1_u_dst[j] = pu1_u_src[j * 2];
            pu1_v_dst[j] = pu1_v_src[j * 2];
        }
        pu1_u_dst += dst_uv_strd;
        pu1_v_dst += dst_uv_strd;
        pu1_u_src += src_uv_strd;
        pu1_v_src += src_uv_strd;
    }
    return;
}

void ihevcd_fmt_conv_444sp_to_420p(UWORD8 *pu1_y_src,
                                   UWORD8 *pu1_uv_src,
                                   UWORD8 *pu1_y_dst,
                                   UWORD8 *pu1_u_dst,
                                   UWORD8 *pu1_v_dst,
                                   WORD32 wd,
                                   WORD32 ht,
                                   WORD32 src_y_strd,
                                   WORD32 src_uv_strd,
                                   WORD32 dst_y_strd,
                                   WORD32 dst_uv_strd)
{
    ihevcd_fmt_conv_luma_copy(pu1_y_src, pu1_y_dst, wd, ht, src_y_strd, dst_y_strd);

    for(WORD32 i = 0; i < ht; i += 2)
    {
        for(WORD32 j = 0; j < wd; j += 2)
        {
            WORD32 cb_sum = pu1_uv_src[j * 2];
            WORD32 cr_sum = pu1_uv_src[j * 2 + 1];
            WORD32 count = 1;

            if((j + 1) < wd)
            {
                cb_sum += pu1_uv_src[(j + 1) * 2];
                cr_sum += pu1_uv_src[(j + 1) * 2 + 1];
                count++;
            }
            if((i + 1) < ht)
            {
                cb_sum += pu1_uv_src[j * 2 + src_uv_strd];
                cr_sum += pu1_uv_src[j * 2 + src_uv_strd + 1];
                count++;
            }
            if((j + 1) < wd && (i + 1) < ht)
            {
                cb_sum += pu1_uv_src[(j + 1) * 2 + src_uv_strd];
                cr_sum += pu1_uv_src[(j + 1) * 2 + src_uv_strd + 1];
                count++;
            }
            pu1_u_dst[j / 2] = (cb_sum + (count >> 1)) / count;
            pu1_v_dst[j / 2] = (cr_sum + (count >> 1)) / count;
        }
        pu1_u_dst += dst_uv_strd;
        pu1_v_dst += dst_uv_strd;
        pu1_uv_src += (src_uv_strd * 2);
    }
    return;
}

void ihevcd_fmt_conv_422sp_to_422p(UWORD8 *pu1_y_src,
                                   UWORD8 *pu1_uv_src,
                                   UWORD8 *pu1_y_dst,
                                   UWORD8 *pu1_u_dst,
                                   UWORD8 *pu1_v_dst,
                                   WORD32 wd,
                                   WORD32 ht,
                                   WORD32 src_y_strd,
                                   WORD32 src_uv_strd,
                                   WORD32 dst_y_strd,
                                   WORD32 dst_uv_strd)
{
    UWORD8 *pu1_u_src, *pu1_v_src;
    WORD32 i, j;

    ihevcd_fmt_conv_luma_copy(pu1_y_src, pu1_y_dst, wd, ht, src_y_strd, dst_y_strd);

    pu1_u_src = (UWORD8 *)pu1_uv_src;
    pu1_v_src = (UWORD8 *)pu1_uv_src + 1;

    for(i = 0; i < ht; i++)
    {
        for(j = 0; j < (wd >> 1); j++)
        {
            pu1_u_dst[j] = pu1_u_src[j * 2];
            pu1_v_dst[j] = pu1_v_src[j * 2];
        }

        pu1_u_dst += dst_uv_strd;
        pu1_v_dst += dst_uv_strd;
        pu1_u_src += src_uv_strd;
        pu1_v_src += src_uv_strd;
    }
    return;
}

void ihevcd_fmt_conv_422sp_to_420p(UWORD8 *pu1_y_src,
                                   UWORD8 *pu1_uv_src,
                                   UWORD8 *pu1_y_dst,
                                   UWORD8 *pu1_u_dst,
                                   UWORD8 *pu1_v_dst,
                                   WORD32 wd,
                                   WORD32 ht,
                                   WORD32 src_y_strd,
                                   WORD32 src_uv_strd,
                                   WORD32 dst_y_strd,
                                   WORD32 dst_uv_strd)
{
    ihevcd_fmt_conv_luma_copy(pu1_y_src, pu1_y_dst, wd, ht, src_y_strd, dst_y_strd);

    for(WORD32 i = 0; i < ht; i += 2)
    {
        for(WORD32 j = 0; j < wd; j += 2)
        {
            WORD32 cb_sum = pu1_uv_src[j];
            WORD32 cr_sum = pu1_uv_src[j + 1];

            if((i + 1) < ht)
            {
                cb_sum += pu1_uv_src[j + src_uv_strd] + 1;
                cr_sum += pu1_uv_src[j + 1 + src_uv_strd] + 1;

                cb_sum >>= 1;
                cr_sum >>= 1;
            }
            pu1_u_dst[j / 2] = cb_sum;
            pu1_v_dst[j / 2] = cr_sum;
        }
        pu1_u_dst += dst_uv_strd;
        pu1_v_dst += dst_uv_strd;
        pu1_uv_src += (src_uv_strd * 2);
    }
    return;
}


/**
*******************************************************************************
*
* @brief Function used from format conversion or frame copy
*
* @par   Description
* Function used from copying or converting a reference frame to display buffer
* in non shared mode
*
* @param[in] pu1_y_dst
*   Output Y pointer
*
* @param[in] pu1_u_dst
*   Output U/UV pointer ( UV is interleaved in the same format as that of input)
*
* @param[in] pu1_v_dst
*   Output V pointer ( used in 420P output case)
*
* @param[in] blocking
*   To indicate whether format conversion should wait till frame is reconstructed
*   and then return after complete copy is done. To be set to 1 when called at the
*   end of frame processing and set to 0 when called between frame processing modules
*   in order to utilize available MCPS
*
* @returns Error from IHEVCD_ERROR_T
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_fmt_conv(codec_t *ps_codec,
                               process_ctxt_t *ps_proc,
                               UWORD8 *pu1_y_dst,
                               UWORD8 *pu1_u_dst,
                               UWORD8 *pu1_v_dst,
                               WORD32 cur_row,
                               WORD32 num_rows)
{
    IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
    pic_buf_t *ps_disp_pic;
    UWORD8 *pu1_y_src, *pu1_uv_src;
    UWORD8 *pu1_y_dst_tmp, *pu1_uv_dst_tmp;
    UWORD8 *pu1_u_dst_tmp, *pu1_v_dst_tmp;
    WORD32 is_u_first;
    UWORD8 *pu1_luma;
    UWORD8 *pu1_chroma;
    sps_t *ps_sps;
    WORD32 disable_luma_copy;
    WORD32 crop_unit_x, crop_unit_y;
    WORD32 h_samp_factor, v_samp_factor;
    WORD32 src_chroma_pixel_strd = 2;
    WORD32 src_chroma_row_stride;

    if(0 == num_rows)
        return ret;

    /* In case processing is disabled, then no need to format convert/copy */
    PROFILE_DISABLE_FMT_CONV();
    ps_sps = ps_proc->ps_sps;

    h_samp_factor = (CHROMA_FMT_IDC_YUV444 == ps_sps->i1_chroma_format_idc) ? 1 : 2;
    v_samp_factor = (CHROMA_FMT_IDC_YUV420 == ps_sps->i1_chroma_format_idc) ? 2 : 1;

    crop_unit_x = 1;
    crop_unit_y = 1;

    if(CHROMA_FMT_IDC_YUV420 == ps_sps->i1_chroma_format_idc)
    {
        crop_unit_x = 2;
        crop_unit_y = 2;
    }
    else if(CHROMA_FMT_IDC_YUV422 == ps_sps->i1_chroma_format_idc)
    {
        crop_unit_x = 2;
        crop_unit_y = 1;
    }

    ps_disp_pic = ps_codec->ps_disp_buf;
    pu1_luma = ps_disp_pic->pu1_luma;
    if(CHROMA_FMT_IDC_MONOCHROME != ps_sps->i1_chroma_format_idc)
    {
        pu1_chroma = ps_disp_pic->pu1_chroma;
    }


    /* Take care of cropping */
    pu1_luma    += ps_codec->i4_strd * ps_sps->i2_pic_crop_top_offset * crop_unit_y + ps_sps->i2_pic_crop_left_offset * crop_unit_x;

    src_chroma_row_stride = (ps_codec->i4_strd * src_chroma_pixel_strd / h_samp_factor);
    if(CHROMA_FMT_IDC_MONOCHROME != ps_sps->i1_chroma_format_idc)
    {
        pu1_chroma += (ps_sps->i2_pic_crop_top_offset * src_chroma_row_stride)
                        + ps_sps->i2_pic_crop_left_offset * src_chroma_pixel_strd;
    }
    is_u_first = (IV_YUV_420SP_UV == ps_codec->e_ref_chroma_fmt) ? 1 : 0;

    /* In case of 420P output luma copy is disabled for shared mode */
    disable_luma_copy = 0;
    if(1 == ps_codec->i4_share_disp_buf)
    {
        disable_luma_copy = 1;
    }



    {
        pu1_y_src   = pu1_luma + cur_row * ps_codec->i4_strd;
        if(CHROMA_FMT_IDC_MONOCHROME != ps_sps->i1_chroma_format_idc)
        {
            pu1_uv_src = pu1_chroma + ((cur_row / v_samp_factor) * src_chroma_row_stride);
        }

        /* In case of shared mode, with 420P output, get chroma destination */
        if((1 == ps_codec->i4_share_disp_buf) && (IV_YUV_420P == ps_codec->e_chroma_fmt))
        {
            WORD32 i;
            for(i = 0; i < ps_codec->i4_share_disp_buf_cnt; i++)
            {
                WORD32 diff = ps_disp_pic->pu1_luma - ps_codec->s_disp_buffer[i].pu1_bufs[0];
                if(diff == (ps_codec->i4_strd * PAD_TOP + PAD_LEFT))
                {
                    pu1_u_dst = ps_codec->s_disp_buffer[i].pu1_bufs[1];
                    pu1_u_dst += (ps_codec->i4_strd * PAD_TOP) / 4 + (PAD_LEFT / 2);

                    pu1_v_dst = ps_codec->s_disp_buffer[i].pu1_bufs[2];
                    pu1_v_dst += (ps_codec->i4_strd * PAD_TOP) / 4 + (PAD_LEFT / 2);
                    break;
                }
            }
        }
        pu1_y_dst_tmp  = pu1_y_dst  + cur_row * ps_codec->i4_disp_strd;
        if(IV_YUV_444P == ps_codec->e_chroma_fmt)
        {
            pu1_u_dst_tmp = pu1_u_dst + cur_row * ps_codec->i4_disp_strd;
            pu1_v_dst_tmp = pu1_v_dst + cur_row * ps_codec->i4_disp_strd;
        }
        else if(IV_YUV_422P == ps_codec->e_chroma_fmt)
        {
            pu1_u_dst_tmp = pu1_u_dst + cur_row * ((ps_codec->i4_disp_strd + 1) / 2);
            pu1_v_dst_tmp = pu1_v_dst + cur_row * ((ps_codec->i4_disp_strd + 1) / 2);
        }
        else if(IV_YUV_420P == ps_codec->e_chroma_fmt)
        {
            pu1_u_dst_tmp = pu1_u_dst + ((cur_row + 1) / 2) * ((ps_codec->i4_disp_strd + 1) / 2);
            pu1_v_dst_tmp = pu1_v_dst + ((cur_row + 1) / 2) * ((ps_codec->i4_disp_strd + 1) / 2);
        }
        else if(IV_YUV_420SP_UV == ps_codec->e_chroma_fmt
                        || IV_YUV_420SP_VU == ps_codec->e_chroma_fmt)
        {
            pu1_uv_dst_tmp = pu1_u_dst + ((cur_row + 1) / 2) * ALIGN2(ps_codec->i4_disp_strd);
        }

        /* In case of multi threaded implementation, format conversion might be called
         * before reconstruction is completed. If the frame being converted/copied
         * is same as the frame being reconstructed,
         * Check how many rows can be format converted
         * Convert those many rows and then check for remaining rows and so on
         */

        if((0 == ps_codec->i4_flush_mode) && (ps_codec->i4_disp_buf_id == ps_proc->i4_cur_pic_buf_id) && (1 < ps_codec->i4_num_cores))
        {
            WORD32 idx;
            UWORD8 *pu1_buf;
            WORD32 status;
            WORD32 last_row = cur_row + num_rows;
            WORD32 last_ctb_y;
            UWORD32 ctb_in_row;

            while(1)
            {
                last_row = cur_row + MAX(num_rows, (1 << ps_sps->i1_log2_ctb_size)) +
                                ps_sps->i2_pic_crop_top_offset * crop_unit_y;
                last_ctb_y = (last_row >> ps_sps->i1_log2_ctb_size) - 1;
                /* Since deblocking works with a shift of -4, -4 ,wait till next CTB row is processed */
                last_ctb_y++;
                /* In case of a  conformance window, an extra wait of one row might be needed */
                last_ctb_y++;
                last_ctb_y = MIN(last_ctb_y, (ps_sps->i2_pic_ht_in_ctb - 1));

                idx = (last_ctb_y * ps_sps->i2_pic_wd_in_ctb);

                /*Check if the row below is completely processed before proceeding with format conversion*/
                status = 1;
                for(ctb_in_row = 0; (WORD32)ctb_in_row < ps_sps->i2_pic_wd_in_ctb; ctb_in_row++)
                {
                    pu1_buf = (ps_codec->pu1_proc_map + idx + ctb_in_row);
                    status &= *pu1_buf;
                }

                if(status)
                {
                    break;
                }
                else
                {
                    ithread_yield();
                }
            }
        }

        if((IV_YUV_420SP_UV == ps_codec->e_chroma_fmt) || (IV_YUV_420SP_VU == ps_codec->e_chroma_fmt))
        {
            if(ps_sps->i1_chroma_format_idc == CHROMA_FMT_IDC_YUV420)
            {
                ihevcd_fmt_conv_420sp_to_420sp_ft *fmt_conv_fptr;
                if(ps_codec->i4_disp_wd >= MIN_FMT_CONV_SIMD_WIDTH)
                {
                    fmt_conv_fptr = ps_codec->s_func_selector.ihevcd_fmt_conv_420sp_to_420sp_fptr;
                }
                else
                {
                    fmt_conv_fptr = ihevcd_fmt_conv_420sp_to_420sp;
                }
                fmt_conv_fptr(pu1_y_src, pu1_uv_src,
                              pu1_y_dst_tmp, pu1_uv_dst_tmp,
                              ps_codec->i4_disp_wd, num_rows,
                              ps_codec->i4_strd, ps_codec->i4_strd,
                              ps_codec->i4_disp_strd, ps_codec->i4_disp_strd);
            }
        }
        else if(IV_GRAY == ps_codec->e_chroma_fmt)
        {
            ihevcd_fmt_conv_luma_copy(pu1_y_src,
                                       pu1_y_dst_tmp,
                                       ps_codec->i4_disp_wd, num_rows,
                                       ps_codec->i4_strd,
                                       ps_codec->i4_disp_strd);
        }
        else if(IV_YUV_444P == ps_codec->e_chroma_fmt)
        {
            if(ps_sps->i1_chroma_format_idc == CHROMA_FMT_IDC_YUV444)
            {
                ps_codec->s_func_selector.ihevcd_fmt_conv_444sp_to_444p_fptr(
                                pu1_y_src, pu1_uv_src,
                                pu1_y_dst_tmp, pu1_u_dst_tmp, pu1_v_dst_tmp,
                                ps_codec->i4_disp_wd, num_rows,
                                ps_codec->i4_strd, src_chroma_row_stride,
                                ps_codec->i4_disp_strd, ps_codec->i4_disp_strd);
            }
        }
        else if(IV_YUV_422P == ps_codec->e_chroma_fmt)
        {
            if(ps_sps->i1_chroma_format_idc == CHROMA_FMT_IDC_YUV422)
            {
                ihevcd_fmt_conv_422sp_to_422p(pu1_y_src, pu1_uv_src,
                                              pu1_y_dst_tmp, pu1_u_dst_tmp, pu1_v_dst_tmp,
                                              ps_codec->i4_disp_wd, num_rows,
                                              ps_codec->i4_strd, ps_codec->i4_strd,
                                              ps_codec->i4_disp_strd,
                                              ((ps_codec->i4_disp_strd + 1) / 2));
            }
        }
        else if(IV_YUV_420P == ps_codec->e_chroma_fmt)
        {
            if(ps_sps->i1_chroma_format_idc == CHROMA_FMT_IDC_MONOCHROME)
            {
                ihevcd_fmt_conv_400_to_420p(pu1_y_src,
                                            pu1_y_dst_tmp, pu1_u_dst_tmp, pu1_v_dst_tmp,
                                            ps_codec->i4_disp_wd, num_rows,
                                            ps_codec->i4_strd,
                                            ps_codec->i4_disp_strd,
                                            ((ps_codec->i4_disp_strd + 1) / 2));
            }
            else if(ps_sps->i1_chroma_format_idc == CHROMA_FMT_IDC_YUV420)
            {
                ihevcd_fmt_conv_420sp_to_420p_ft *fmt_conv_fptr;
                if(ps_codec->i4_disp_wd >= MIN_FMT_CONV_SIMD_WIDTH)
                {
                    fmt_conv_fptr = ps_codec->s_func_selector.ihevcd_fmt_conv_420sp_to_420p_fptr;
                }
                else
                {
                    fmt_conv_fptr = ihevcd_fmt_conv_420sp_to_420p;
                }

                if(0 == disable_luma_copy)
                {
                    // copy luma
                    WORD32 i;
                    WORD32 num_cols = ps_codec->i4_disp_wd;

                    for(i = 0; i < num_rows; i++)
                    {
                        memcpy(pu1_y_dst_tmp, pu1_y_src, num_cols);
                        pu1_y_dst_tmp += ps_codec->i4_disp_strd;
                        pu1_y_src += ps_codec->i4_strd;
                    }

                    disable_luma_copy = 1;
                }
                fmt_conv_fptr(pu1_y_src, pu1_uv_src,
                              pu1_y_dst_tmp, pu1_u_dst_tmp, pu1_v_dst_tmp,
                              ps_codec->i4_disp_wd, num_rows,
                              ps_codec->i4_strd, ps_codec->i4_strd,
                              ps_codec->i4_disp_strd, (ps_codec->i4_disp_strd / 2),
                              is_u_first,
                              disable_luma_copy);
            }
            else if(ps_sps->i1_chroma_format_idc == CHROMA_FMT_IDC_YUV444)
            {
                ihevcd_fmt_conv_444sp_to_420p(pu1_y_src, pu1_uv_src,
                                              pu1_y_dst_tmp, pu1_u_dst_tmp, pu1_v_dst_tmp,
                                              ps_codec->i4_disp_wd, num_rows,
                                              ps_codec->i4_strd, src_chroma_row_stride,
                                              ps_codec->i4_disp_strd,
                                              ((ps_codec->i4_disp_strd + 1) / 2));
            }
            else if(ps_sps->i1_chroma_format_idc == CHROMA_FMT_IDC_YUV422)
            {
                ihevcd_fmt_conv_422sp_to_420p(pu1_y_src, pu1_uv_src,
                                              pu1_y_dst_tmp, pu1_u_dst_tmp, pu1_v_dst_tmp,
                                              ps_codec->i4_disp_wd, num_rows,
                                              ps_codec->i4_strd, src_chroma_row_stride,
                                              ps_codec->i4_disp_strd,
                                              ((ps_codec->i4_disp_strd + 1) / 2));
            }
        }
    }
    return (ret);
}


Coverage Report

Created: 2026-08-31 06:32