FFmpeg/libavcodec/mips/blockdsp_msa.c

/*
 * Copyright (c) 2015 Parag Salasakar (parag.salasakar@imgtec.com)
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/mips/generic_macros_msa.h"
#include "blockdsp_mips.h"

static void copy_8bit_value_width8_msa(uint8_t *src, uint8_t val,
                                       int32_t src_stride, int32_t height)
{
    int32_t cnt;
    uint64_t dst0;
    v16u8 val0;

    val0 = (v16u8) __msa_fill_b(val);
    dst0 = __msa_copy_u_d((v2i64) val0, 0);

    for (cnt = (height >> 2); cnt--;) {
        SD4(dst0, dst0, dst0, dst0, src, src_stride);
        src += (4 * src_stride);
    }
}

static void copy_8bit_value_width16_msa(uint8_t *src, uint8_t val,
                                        int32_t src_stride, int32_t height)
{
    int32_t cnt;
    v16u8 val0;

    val0 = (v16u8) __msa_fill_b(val);

    for (cnt = (height >> 3); cnt--;) {
        ST_UB8(val0, val0, val0, val0, val0, val0, val0, val0, src, src_stride);
        src += (8 * src_stride);
    }
}

static void memset_zero_16width_msa(uint8_t *src, int32_t stride,
                                    int32_t height)
{
    int8_t cnt;
    v16u8 zero = { 0 };

    for (cnt = (height / 2); cnt--;) {
        ST_UB(zero, src);
        src += stride;
        ST_UB(zero, src);
        src += stride;
    }
}

void ff_fill_block16_msa(uint8_t *src, uint8_t val, ptrdiff_t stride, int height)
{
    copy_8bit_value_width16_msa(src, val, stride, height);
}

void ff_fill_block8_msa(uint8_t *src, uint8_t val, ptrdiff_t stride, int height)
{
    copy_8bit_value_width8_msa(src, val, stride, height);
}

void ff_clear_block_msa(int16_t *block)
{
    memset_zero_16width_msa((uint8_t *) block, 16, 8);
}

void ff_clear_blocks_msa(int16_t *block)
{
    memset_zero_16width_msa((uint8_t *) block, 16, 8 * 6);
}