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Files
FFmpeg/libavcodec/x86/apv_dsp_init.c
Mark Thompson d03c99441d lavc/apv: AVX2 transquant for x86-64
Typical checkasm result on Alder Lake:

decode_transquant_8_c:                                 464.2 ( 1.00x)
decode_transquant_8_avx2:                               86.2 ( 5.38x)
decode_transquant_10_c:                                481.6 ( 1.00x)
decode_transquant_10_avx2:                              83.5 ( 5.77x)
2025-04-27 15:52:30 +01:00

45 lines
1.5 KiB
C

/*
* 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 "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/apv_dsp.h"
#if ARCH_X86_64
void ff_apv_decode_transquant_avx2(void *output,
ptrdiff_t pitch,
const int16_t *input,
const int16_t *qmatrix,
int bit_depth,
int qp_shift);
av_cold void ff_apv_dsp_init_x86_64(APVDSPContext *dsp)
{
int cpu_flags = av_get_cpu_flags();
if (EXTERNAL_AVX2_FAST(cpu_flags)) {
dsp->decode_transquant = ff_apv_decode_transquant_avx2;
}
}
#endif /* ARCH_X86_64 */