ab8cfd45f8
* qatar/master: avio: add more documentation for AVIOContext. Parse sprite data for WMVP and WVP2, and decode sprites for the latter Replace outdated info on the FAQ Redefine sameq pad: fix example explanation gradfun: add notice from the MPlayer manual eval: add support for trunc, ceil, and floor functions documentation: add setdar and setsar description to filters.texi avio: document some members of AVIOContext. avio: document avio_close(). avio: cosmetics, vertically align comments. avio: cosmetics, group the reading functions. avio: cosmetics, merge all the FF_API_OLD_AVIO blocks. avio: cosmetics, move AVIOContext to start of the file. avio: update file header. os: fix OpenBSD/PowerPC compilation pixfmt: add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE oggdec: fix demuxing chained audio streams fix typo Conflicts: doc/filters.texi libavformat/avio.h libavutil/pixfmt.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
86 lines
2.5 KiB
C
86 lines
2.5 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
|
|
*/
|
|
|
|
#ifdef __APPLE__
|
|
#undef _POSIX_C_SOURCE
|
|
#include <sys/sysctl.h>
|
|
#elif defined(__OpenBSD__)
|
|
#undef _POSIX_C_SOURCE
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
#include <machine/cpu.h>
|
|
#elif defined(__AMIGAOS4__)
|
|
#include <exec/exec.h>
|
|
#include <interfaces/exec.h>
|
|
#include <proto/exec.h>
|
|
#endif /* __APPLE__ */
|
|
|
|
#include "libavutil/cpu.h"
|
|
#include "config.h"
|
|
|
|
/**
|
|
* This function MAY rely on signal() or fork() in order to make sure AltiVec
|
|
* is present.
|
|
*/
|
|
int ff_get_cpu_flags_ppc(void)
|
|
{
|
|
#if HAVE_ALTIVEC
|
|
#ifdef __AMIGAOS4__
|
|
ULONG result = 0;
|
|
extern struct ExecIFace *IExec;
|
|
|
|
IExec->GetCPUInfoTags(GCIT_VectorUnit, &result, TAG_DONE);
|
|
if (result == VECTORTYPE_ALTIVEC)
|
|
return AV_CPU_FLAG_ALTIVEC;
|
|
return 0;
|
|
#elif defined(__APPLE__) || defined(__OpenBSD__)
|
|
#ifdef __OpenBSD__
|
|
int sels[2] = {CTL_MACHDEP, CPU_ALTIVEC};
|
|
#else
|
|
int sels[2] = {CTL_HW, HW_VECTORUNIT};
|
|
#endif
|
|
int has_vu = 0;
|
|
size_t len = sizeof(has_vu);
|
|
int err;
|
|
|
|
err = sysctl(sels, 2, &has_vu, &len, NULL, 0);
|
|
|
|
if (err == 0)
|
|
return has_vu ? AV_CPU_FLAG_ALTIVEC : 0;
|
|
return 0;
|
|
#elif CONFIG_RUNTIME_CPUDETECT
|
|
int proc_ver;
|
|
// Support of mfspr PVR emulation added in Linux 2.6.17.
|
|
__asm__ volatile("mfspr %0, 287" : "=r" (proc_ver));
|
|
proc_ver >>= 16;
|
|
if (proc_ver & 0x8000 ||
|
|
proc_ver == 0x000c ||
|
|
proc_ver == 0x0039 || proc_ver == 0x003c ||
|
|
proc_ver == 0x0044 || proc_ver == 0x0045 ||
|
|
proc_ver == 0x0070)
|
|
return AV_CPU_FLAG_ALTIVEC;
|
|
return 0;
|
|
#else
|
|
// Since we were compiled for AltiVec, just assume we have it
|
|
// until someone comes up with a proper way (not involving signal hacks).
|
|
return AV_CPU_FLAG_ALTIVEC;
|
|
#endif /* __AMIGAOS4__ */
|
|
#endif /* HAVE_ALTIVEC */
|
|
return 0;
|
|
}
|