ffmpeg/libavutil/arm/cpu.h

/*
 * 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
 */

#ifndef AVUTIL_ARM_CPU_H
#define AVUTIL_ARM_CPU_H

#include "config.h"
#include "libavutil/cpu.h"
#include "libavutil/cpu_internal.h"

#define have_armv5te(flags) CPUEXT(flags, ARMV5TE)
#define have_armv6(flags)   CPUEXT(flags, ARMV6)
#define have_armv6t2(flags) CPUEXT(flags, ARMV6T2)
#define have_vfp(flags)     CPUEXT(flags, VFP)
#define have_vfpv3(flags)   CPUEXT(flags, VFPV3)
#define have_neon(flags)    CPUEXT(flags, NEON)
#define have_setend(flags)  CPUEXT(flags, SETEND)

/* some functions use the VFPv2 vector mode which is deprecated in ARMv7-A
 * and might trap on such CPU depending on the OS configuration */
#define have_vfp_vm(flags)                                              \
    (have_armv6(flags) && ((flags) & AV_CPU_FLAG_VFP_VM))

#endif /* AVUTIL_ARM_CPU_H */
ARM: allow runtime masking of CPU features This allows masking CPU features with the -cpuflags avconv option which is useful for testing different optimisations without rebuilding. Signed-off-by: Mans Rullgard <mans@mansr.com> 2012-04-21 16:31:10 +02:00			`/*`
Reinstate proper FFmpeg license for all files. 2013-08-15 23:12:51 +02:00			`* This file is part of FFmpeg.`
ARM: allow runtime masking of CPU features This allows masking CPU features with the -cpuflags avconv option which is useful for testing different optimisations without rebuilding. Signed-off-by: Mans Rullgard <mans@mansr.com> 2012-04-21 16:31:10 +02:00			`*`
Reinstate proper FFmpeg license for all files. 2013-08-15 23:12:51 +02:00			`* FFmpeg is free software; you can redistribute it and/or`
ARM: allow runtime masking of CPU features This allows masking CPU features with the -cpuflags avconv option which is useful for testing different optimisations without rebuilding. Signed-off-by: Mans Rullgard <mans@mansr.com> 2012-04-21 16:31:10 +02:00			`* 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.`
			`*`
Reinstate proper FFmpeg license for all files. 2013-08-15 23:12:51 +02:00			`* FFmpeg is distributed in the hope that it will be useful,`
ARM: allow runtime masking of CPU features This allows masking CPU features with the -cpuflags avconv option which is useful for testing different optimisations without rebuilding. Signed-off-by: Mans Rullgard <mans@mansr.com> 2012-04-21 16:31:10 +02:00			`* 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`
Reinstate proper FFmpeg license for all files. 2013-08-15 23:12:51 +02:00			`* License along with FFmpeg; if not, write to the Free Software`
ARM: allow runtime masking of CPU features This allows masking CPU features with the -cpuflags avconv option which is useful for testing different optimisations without rebuilding. Signed-off-by: Mans Rullgard <mans@mansr.com> 2012-04-21 16:31:10 +02:00			`* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA`
			`*/`

			`#ifndef AVUTIL_ARM_CPU_H`
			`#define AVUTIL_ARM_CPU_H`

			`#include "config.h"`
			`#include "libavutil/cpu.h"`
avutil: Refactor CPU extension availability macros 2013-08-20 16:36:46 +02:00			`#include "libavutil/cpu_internal.h"`
ARM: allow runtime masking of CPU features This allows masking CPU features with the -cpuflags avconv option which is useful for testing different optimisations without rebuilding. Signed-off-by: Mans Rullgard <mans@mansr.com> 2012-04-21 16:31:10 +02:00
avutil: Refactor CPU extension availability macros 2013-08-20 16:36:46 +02:00			`#define have_armv5te(flags) CPUEXT(flags, ARMV5TE)`
			`#define have_armv6(flags) CPUEXT(flags, ARMV6)`
			`#define have_armv6t2(flags) CPUEXT(flags, ARMV6T2)`
			`#define have_vfp(flags) CPUEXT(flags, VFP)`
			`#define have_vfpv3(flags) CPUEXT(flags, VFPV3)`
			`#define have_neon(flags) CPUEXT(flags, NEON)`
avutil: turn arm setend into a cpuflag this allows disabling and enabling it it also prevents crashes if vfpv3 and neon are disabled which previously would have enabled the flag And last but not least one can enable setend on cpus like cortex-a8 where its fast but disabled by default Signed-off-by: Michael Niedermayer <michaelni@gmx.at> 2014-08-07 18:34:35 +02:00			`#define have_setend(flags) CPUEXT(flags, SETEND)`
arm: Macroize the test for 'setend' CPU instruction support Signed-off-by: Diego Biurrun <diego@biurrun.de> 2014-07-21 15:53:06 +02:00
arm: add a cpu flag for the VFPv2 vector mode The vector mode was deprecated in ARMv7-A/VFPv3 and various cpu implementations do not support it in hardware. Vector mode code will depending the OS either be emulated in software or result in an illegal instruction on cpus which does not support it. This was not really problem in practice since NEON implementations of the same functions are preferred. It will however become a problem for checkasm which tests every cpu flag separately. Since this is a cpu feature newer cpu do not support anymore the behaviour of this flag differs from the other flags. It can be only activated by runtime cpu feature selection. 2015-12-09 22:28:36 +01:00			`/* some functions use the VFPv2 vector mode which is deprecated in ARMv7-A`
			`* and might trap on such CPU depending on the OS configuration */`
			`#define have_vfp_vm(flags) \`
			`(have_armv6(flags) && ((flags) & AV_CPU_FLAG_VFP_VM))`

Employ consistent LIBAV_COMPAT_ multiple inclusion guards in compat/ Also fix a comment and an #endif comment. 2012-10-25 16:49:26 +02:00			`#endif /* AVUTIL_ARM_CPU_H */`