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/*
* Copyright (c) 2024 J. Dekker <jdek@itanimul.li>
* Copyright © 2024 Rémi Denis-Courmont.
*
* 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 "config.h"
#include <stdint.h>
#include <string.h>
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/riscv/cpu.h"
#include "libavcodec/h264dsp.h"
extern const struct {
const h264_weight_func weight;
const h264_biweight_func biweight;
} ff_h264_weight_funcs_8_rvv[];
void ff_h264_v_loop_filter_luma_8_rvv(uint8_t *pix, ptrdiff_t stride,
int alpha, int beta, int8_t *tc0);
void ff_h264_h_loop_filter_luma_8_rvv(uint8_t *pix, ptrdiff_t stride,
int alpha, int beta, int8_t *tc0);
void ff_h264_h_loop_filter_luma_mbaff_8_rvv(uint8_t *pix, ptrdiff_t stride,
int alpha, int beta, int8_t *tc0);
#define IDCT_DEPTH(depth) \
void ff_h264_idct_add_##depth##_rvv(uint8_t *d, int16_t *s, int stride); \
void ff_h264_idct8_add_##depth##_rvv(uint8_t *d, int16_t *s, int stride); \
void ff_h264_idct4_dc_add_##depth##_rvv(uint8_t *, int16_t *, int); \
void ff_h264_idct8_dc_add_##depth##_rvv(uint8_t *, int16_t *, int); \
void ff_h264_idct_add16_##depth##_rvv(uint8_t *d, const int *soffset, \
int16_t *s, int stride, \
const uint8_t nnzc[5 * 8]); \
void ff_h264_idct_add16intra_##depth##_rvv(uint8_t *d, const int *soffset, \
int16_t *s, int stride, \
const uint8_t nnzc[5 * 8]); \
void ff_h264_idct8_add4_##depth##_rvv(uint8_t *d, const int *soffset, \
int16_t *s, int stride, \
const uint8_t nnzc[5 * 8]);
IDCT_DEPTH(8)
IDCT_DEPTH(9)
IDCT_DEPTH(10)
IDCT_DEPTH(12)
IDCT_DEPTH(14)
#undef IDCT_DEPTH
void ff_h264_add_pixels8_8_rvv(uint8_t *dst, int16_t *block, int stride);
void ff_h264_add_pixels4_8_rvv(uint8_t *dst, int16_t *block, int stride);
void ff_h264_add_pixels8_16_rvv(uint8_t *dst, int16_t *block, int stride);
void ff_h264_add_pixels4_16_rvv(uint8_t *dst, int16_t *block, int stride);
extern int ff_startcode_find_candidate_rvb(const uint8_t *, int);
extern int ff_startcode_find_candidate_rvv(const uint8_t *, int);
av_cold void ff_h264dsp_init_riscv(H264DSPContext *dsp, const int bit_depth,
const int chroma_format_idc)
{
#if HAVE_RV
int flags = av_get_cpu_flags();
if (flags & AV_CPU_FLAG_RVB_BASIC)
dsp->startcode_find_candidate = ff_startcode_find_candidate_rvb;
# if HAVE_RVV
if (flags & AV_CPU_FLAG_RVV_I32) {
const bool zvl128b = ff_rv_vlen_least(128);
if (bit_depth == 8 && zvl128b) {
for (int i = 0; i < 4; i++) {
dsp->weight_h264_pixels_tab[i] =
ff_h264_weight_funcs_8_rvv[i].weight;
dsp->biweight_h264_pixels_tab[i] =
ff_h264_weight_funcs_8_rvv[i].biweight;
}
dsp->h264_v_loop_filter_luma = ff_h264_v_loop_filter_luma_8_rvv;
dsp->h264_h_loop_filter_luma = ff_h264_h_loop_filter_luma_8_rvv;
dsp->h264_h_loop_filter_luma_mbaff =
ff_h264_h_loop_filter_luma_mbaff_8_rvv;
dsp->h264_idct_add = ff_h264_idct_add_8_rvv;
dsp->h264_idct8_add = ff_h264_idct8_add_8_rvv;
dsp->h264_idct_dc_add = ff_h264_idct4_dc_add_8_rvv;
if (flags & AV_CPU_FLAG_RVB) {
dsp->h264_idct_add16 = ff_h264_idct_add16_8_rvv;
dsp->h264_idct_add16intra = ff_h264_idct_add16intra_8_rvv;
# if __riscv_xlen == 64
dsp->h264_idct8_add4 = ff_h264_idct8_add4_8_rvv;
# endif
}
if (flags & AV_CPU_FLAG_RVV_I64) {
dsp->h264_add_pixels8_clear = ff_h264_add_pixels8_8_rvv;
dsp->h264_idct8_dc_add = ff_h264_idct8_dc_add_8_rvv;
}
dsp->h264_add_pixels4_clear = ff_h264_add_pixels4_8_rvv;
}
#define IDCT_DEPTH(depth) \
if (bit_depth == depth) { \
if (zvl128b) \
dsp->h264_idct_add = ff_h264_idct_add_##depth##_rvv; \
if (flags & AV_CPU_FLAG_RVB_ADDR) \
dsp->h264_idct8_add = ff_h264_idct8_add_##depth##_rvv; \
if (zvl128b && (flags & AV_CPU_FLAG_RVB)) { \
dsp->h264_idct_dc_add = ff_h264_idct4_dc_add_##depth##_rvv; \
dsp->h264_idct8_dc_add = ff_h264_idct8_dc_add_##depth##_rvv; \
if (__riscv_xlen == 64) { \
dsp->h264_idct_add16 = ff_h264_idct_add16_##depth##_rvv; \
dsp->h264_idct_add16intra = \
ff_h264_idct_add16intra_##depth##_rvv; \
} \
} \
if (__riscv_xlen == 64 && (flags & AV_CPU_FLAG_RVB)) \
dsp->h264_idct8_add4 = ff_h264_idct8_add4_##depth##_rvv; \
}
IDCT_DEPTH(9)
IDCT_DEPTH(10)
IDCT_DEPTH(12)
IDCT_DEPTH(14)
if (bit_depth > 8 && zvl128b) {
dsp->h264_add_pixels8_clear = ff_h264_add_pixels8_16_rvv;
if (flags & AV_CPU_FLAG_RVV_I64)
dsp->h264_add_pixels4_clear = ff_h264_add_pixels4_16_rvv;
}
dsp->startcode_find_candidate = ff_startcode_find_candidate_rvv;
}
# endif
#endif
}
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