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/*
* Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS).
* Copyright (c) 2024 Geoff Hill <geoff@geoffhill.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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 <stdint.h>
#include <string.h>
#include "libavutil/mem.h"
#include "libavutil/mem_internal.h"
#include "libavcodec/ac3dsp.h"
#include "checkasm.h"
#define randomize_exp(buf, len) \
do { \
int i; \
for (i = 0; i < len; i++) { \
buf[i] = (uint8_t)rnd(); \
} \
} while (0)
#define randomize_i24(buf, len) \
do { \
int i; \
for (i = 0; i < len; i++) { \
int32_t v = (int32_t)rnd(); \
int32_t u = (v & 0xFFFFFF); \
buf[i] = (v < 0) ? -u : u; \
} \
} while (0)
#define randomize_float(buf, len) \
do { \
int i; \
for (i = 0; i < len; i++) { \
float f = (float)rnd() / (UINT_MAX >> 5) - 16.0f; \
buf[i] = f; \
} \
} while (0)
static void check_ac3_exponent_min(AC3DSPContext *c) {
#define MAX_COEFS 256
#define MAX_CTXT 6
#define EXP_SIZE (MAX_CTXT * MAX_COEFS)
LOCAL_ALIGNED_16(uint8_t, src, [EXP_SIZE]);
LOCAL_ALIGNED_16(uint8_t, v1, [EXP_SIZE]);
LOCAL_ALIGNED_16(uint8_t, v2, [EXP_SIZE]);
int n;
declare_func(void, uint8_t *, int, int);
for (n = 0; n < MAX_CTXT; ++n) {
if (check_func(c->ac3_exponent_min, "ac3_exponent_min_reuse%d", n)) {
randomize_exp(src, EXP_SIZE);
memcpy(v1, src, EXP_SIZE);
memcpy(v2, src, EXP_SIZE);
call_ref(v1, n, MAX_COEFS);
call_new(v2, n, MAX_COEFS);
if (memcmp(v1, v2, EXP_SIZE) != 0)
fail();
bench_new(v2, n, MAX_COEFS);
}
}
report("ac3_exponent_min");
}
static void check_ac3_extract_exponents(AC3DSPContext *c) {
#define MAX_EXPS 3072
LOCAL_ALIGNED_16(int32_t, src, [MAX_EXPS]);
LOCAL_ALIGNED_16(uint8_t, v1, [MAX_EXPS]);
LOCAL_ALIGNED_16(uint8_t, v2, [MAX_EXPS]);
int n;
declare_func(void, uint8_t *, int32_t *, int);
for (n = 512; n <= MAX_EXPS; n += 256) {
if (check_func(c->extract_exponents, "ac3_extract_exponents_n%d", n)) {
randomize_i24(src, n);
call_ref(v1, src, n);
call_new(v2, src, n);
if (memcmp(v1, v2, n) != 0)
fail();
bench_new(v1, src, n);
}
}
report("ac3_extract_exponents");
}
static void check_float_to_fixed24(AC3DSPContext *c) {
#define BUF_SIZE 1024
LOCAL_ALIGNED_32(float, src, [BUF_SIZE]);
declare_func(void, int32_t *, const float *, size_t);
randomize_float(src, BUF_SIZE);
if (check_func(c->float_to_fixed24, "float_to_fixed24")) {
LOCAL_ALIGNED_32(int32_t, dst, [BUF_SIZE]);
LOCAL_ALIGNED_32(int32_t, dst2, [BUF_SIZE]);
call_ref(dst, src, BUF_SIZE);
call_new(dst2, src, BUF_SIZE);
if (memcmp(dst, dst2, BUF_SIZE) != 0)
fail();
bench_new(dst, src, BUF_SIZE);
}
report("float_to_fixed24");
}
static void check_ac3_sum_square_butterfly_int32(AC3DSPContext *c) {
#define ELEMS 240
LOCAL_ALIGNED_16(int32_t, lt, [ELEMS]);
LOCAL_ALIGNED_16(int32_t, rt, [ELEMS]);
LOCAL_ALIGNED_16(uint64_t, v1, [4]);
LOCAL_ALIGNED_16(uint64_t, v2, [4]);
declare_func(void, int64_t[4], const int32_t *, const int32_t *, int);
randomize_i24(lt, ELEMS);
randomize_i24(rt, ELEMS);
if (check_func(c->sum_square_butterfly_int32,
"ac3_sum_square_bufferfly_int32")) {
call_ref(v1, lt, rt, ELEMS);
call_new(v2, lt, rt, ELEMS);
if (memcmp(v1, v2, sizeof(int64_t[4])) != 0)
fail();
bench_new(v2, lt, rt, ELEMS);
}
report("ac3_sum_square_butterfly_int32");
}
static void check_ac3_sum_square_butterfly_float(AC3DSPContext *c) {
LOCAL_ALIGNED_32(float, lt, [ELEMS]);
LOCAL_ALIGNED_32(float, rt, [ELEMS]);
LOCAL_ALIGNED_16(float, v1, [4]);
LOCAL_ALIGNED_16(float, v2, [4]);
declare_func(void, float[4], const float *, const float *, int);
randomize_float(lt, ELEMS);
randomize_float(rt, ELEMS);
if (check_func(c->sum_square_butterfly_float,
"ac3_sum_square_bufferfly_float")) {
call_ref(v1, lt, rt, ELEMS);
call_new(v2, lt, rt, ELEMS);
if (!float_near_ulp_array(v1, v2, 11, 4))
fail();
bench_new(v2, lt, rt, ELEMS);
}
report("ac3_sum_square_butterfly_float");
}
void checkasm_check_ac3dsp(void)
{
AC3DSPContext c;
ff_ac3dsp_init(&c);
check_ac3_exponent_min(&c);
check_ac3_extract_exponents(&c);
check_float_to_fixed24(&c);
check_ac3_sum_square_butterfly_int32(&c);
check_ac3_sum_square_butterfly_float(&c);
}
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