gx
dcecd42de4
Snapshot FFmpeg n7.1 (release tag) с применённым patch'ем для cuframes input format. Используется как FFMPEG_REPO_OVERRIDE в NickM-27/FFmpeg-Builds fork для статической сборки patched binary под Frigate (Debian 12 / glibc 2.36). Apply changes: + libavformat/cuframesdec.c (новый — реализация демуксера) M libavformat/Makefile (CONFIG_CUFRAMES_DEMUXER target) M libavformat/allformats.c (extern declaration) M configure (--enable-libcuframes option + dep check) Patch source: https://git.goldix.org/gx/cuframes (filter/ffmpeg-7.1-cuframes-demuxer.patch) History сброшена (snapshot вместо fork) потому что upstream shallow clone не позволял push в gitea. Полная история FFmpeg — на github.com/FFmpeg/FFmpeg n7.1.
153 lines
3.4 KiB
C
153 lines
3.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/cpu.h"
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#include "libavutil/cpu_internal.h"
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#include "config.h"
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#if HAVE_GETAUXVAL || HAVE_ELF_AUX_INFO
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#include <stdint.h>
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#include <sys/auxv.h>
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#define HWCAP_AARCH64_ASIMDDP (1 << 20)
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#define HWCAP2_AARCH64_I8MM (1 << 13)
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static int detect_flags(void)
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{
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int flags = 0;
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unsigned long hwcap = ff_getauxval(AT_HWCAP);
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unsigned long hwcap2 = ff_getauxval(AT_HWCAP2);
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if (hwcap & HWCAP_AARCH64_ASIMDDP)
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flags |= AV_CPU_FLAG_DOTPROD;
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if (hwcap2 & HWCAP2_AARCH64_I8MM)
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flags |= AV_CPU_FLAG_I8MM;
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return flags;
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}
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#elif defined(__APPLE__) && HAVE_SYSCTLBYNAME
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#include <sys/sysctl.h>
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static int have_feature(const char *feature) {
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uint32_t value = 0;
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size_t size = sizeof(value);
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if (!sysctlbyname(feature, &value, &size, NULL, 0))
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return value;
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return 0;
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}
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static int detect_flags(void)
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{
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int flags = 0;
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if (have_feature("hw.optional.arm.FEAT_DotProd"))
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flags |= AV_CPU_FLAG_DOTPROD;
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if (have_feature("hw.optional.arm.FEAT_I8MM"))
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flags |= AV_CPU_FLAG_I8MM;
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return flags;
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}
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#elif defined(__OpenBSD__)
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#include <machine/armreg.h>
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#include <machine/cpu.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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static int detect_flags(void)
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{
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int flags = 0;
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#ifdef CPU_ID_AA64ISAR0
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int mib[2];
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uint64_t isar0;
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uint64_t isar1;
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size_t len;
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mib[0] = CTL_MACHDEP;
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mib[1] = CPU_ID_AA64ISAR0;
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len = sizeof(isar0);
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if (sysctl(mib, 2, &isar0, &len, NULL, 0) != -1) {
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if (ID_AA64ISAR0_DP(isar0) >= ID_AA64ISAR0_DP_IMPL)
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flags |= AV_CPU_FLAG_DOTPROD;
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}
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mib[0] = CTL_MACHDEP;
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mib[1] = CPU_ID_AA64ISAR1;
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len = sizeof(isar1);
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if (sysctl(mib, 2, &isar1, &len, NULL, 0) != -1) {
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#ifdef ID_AA64ISAR1_I8MM_IMPL
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if (ID_AA64ISAR1_I8MM(isar1) >= ID_AA64ISAR1_I8MM_IMPL)
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flags |= AV_CPU_FLAG_I8MM;
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#endif
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}
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#endif
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return flags;
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}
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#elif defined(_WIN32)
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#include <windows.h>
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static int detect_flags(void)
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{
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int flags = 0;
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#ifdef PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE
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if (IsProcessorFeaturePresent(PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE))
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flags |= AV_CPU_FLAG_DOTPROD;
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#endif
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return flags;
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}
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#else
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static int detect_flags(void)
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{
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return 0;
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}
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#endif
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int ff_get_cpu_flags_aarch64(void)
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{
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int flags = AV_CPU_FLAG_ARMV8 * HAVE_ARMV8 |
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AV_CPU_FLAG_NEON * HAVE_NEON;
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#ifdef __ARM_FEATURE_DOTPROD
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flags |= AV_CPU_FLAG_DOTPROD;
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#endif
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#ifdef __ARM_FEATURE_MATMUL_INT8
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flags |= AV_CPU_FLAG_I8MM;
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#endif
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flags |= detect_flags();
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return flags;
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}
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size_t ff_get_cpu_max_align_aarch64(void)
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{
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int flags = av_get_cpu_flags();
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if (flags & AV_CPU_FLAG_NEON)
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return 16;
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return 8;
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}
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