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cpu.h
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*****************************************************************************
- * cpu.h: h264 encoder library
- *****************************************************************************
- * Copyright (C) 2004-2008 Loren Merritt <lorenm@u.washington.edu>
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- *****************************************************************************/
- #ifndef X264_CPU_H
- #define X264_CPU_H
- uint32_t x264_cpu_detect( void );
- int x264_cpu_num_processors( void );
- void x264_emms( void );
- void x264_cpu_mask_misalign_sse( void );
- /* kluge:
- * gcc can't give variables any greater alignment than the stack frame has.
- * We need 16 byte alignment for SSE2, so here we make sure that the stack is
- * aligned to 16 bytes.
- * gcc 4.2 introduced __attribute__((force_align_arg_pointer)) to fix this
- * problem, but I don't want to require such a new version.
- * This applies only to x86_32, since other architectures that need alignment
- * either have ABIs that ensure aligned stack, or don't support it at all. */
- #if defined(ARCH_X86) && defined(HAVE_MMX)
- int x264_stack_align( void (*func)(), ... );
- #define x264_stack_align(func,...) x264_stack_align((void (*)())func, __VA_ARGS__)
- #else
- #define x264_stack_align(func,...) func(__VA_ARGS__)
- #endif
- typedef struct {
- const char name[16];
- int flags;
- } x264_cpu_name_t;
- extern const x264_cpu_name_t x264_cpu_names[];
- #endif