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ffmpeg/libavutil
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Martin Storsjö 7b0c7c9163 arm: Detect 32 bit cpu features on ARMv8 when running on a 64 bit kernel 
When running on a 64 bit kernel, /proc/cpuinfo lists different
optional features than on 32 bit kernels (because some of them
are mandatory in the 64 bit implemenations).

The kernel does list the old features properly if they are queried
via /proc/self/auxv though - however this file is not always readable
(e.g. on most android systems). The getauxval function could also
provide the same info as /proc/self/auxv even if this file isn't
readable, but this function is not always available (and thus would
need to be loaded with dlsym for compatibility with older android
versions).

The android cpufeatures library does this slightly differently,
by assuming that these are available if the "CPU architecture"
line is >= 8, see [1] for details.

It has been suggested to include the old, non-optional features in
/proc/cpuinfo as well, but that suggested patch never was merged.
See [2] for the discussion around this suggestion.

[1] https://android-review.googlesource.com/91380
[2] http://marc.info/?l=linux-arm-kernel&m=139087240101974

Signed-off-by: Martin Storsjö <martin@martin.st>
2014-06-28 22:16:59 +03:00
..
aarch64 build: check if AS supports the '.func' directive 2014-06-03 14:23:03 +02:00
arm arm: Detect 32 bit cpu features on ARMv8 when running on a 64 bit kernel 2014-06-28 22:16:59 +03:00
avr32 Replace FFmpeg with Libav in licence headers 2011-03-19 13:33:20 +00:00
bfin Remove all Blackfin architecture optimizations 2014-06-02 08:41:47 -07:00
mips mips: intreadwrite: fix inline asm for gcc 4.8 2012-05-09 13:45:22 +01:00
ppc ppc: Move vec_unaligned_load macro to util_altivec 2014-05-28 03:29:33 -07:00
sh4 Replace FFmpeg with Libav in licence headers 2011-03-19 13:33:20 +00:00
tomi intreadwrite: tomi: Add missing attributes.h #include for av_always_inline 2013-02-20 00:45:30 +01:00
x86 x86: add detection for Bit Manipulation Instruction sets 2014-02-23 15:29:36 +01:00
adler32.c adler32: Fix doxy group definition 2014-04-07 01:31:02 +02:00
adler32.h adler32: Fix doxy group definition 2014-04-07 01:31:02 +02:00
aes.c avutil: remove timer.h include from internal.h 2014-01-25 21:50:20 +01:00
aes.h avutil: Add functions for allocating opaque contexts for algorithms 2012-10-11 23:35:27 +03:00
atomic_gcc.h atomic: fix CAS with armcc. 2013-03-09 08:36:40 +01:00
atomic_suncc.h atomic: Add include guards to the implementation headers 2013-03-08 12:00:06 +02:00
atomic_win32.h atomic: Add include guards to the implementation headers 2013-03-08 12:00:06 +02:00
atomic.c threads: Check w32threads dependencies at the configure stage 2014-02-19 15:12:37 +01:00
atomic.h atomics: cosmetics: Restructure ifdefs for greater clarity 2013-12-20 11:23:13 +01:00
attributes.h attributes: disable flatten on llvm/clang 2013-11-03 11:51:40 +01:00
audio_fifo.c Don't include common.h from avutil.h 2012-08-15 22:32:06 +03:00
audio_fifo.h avutil: add audio fifo buffer 2012-04-20 09:43:11 -04:00
audioconvert.h lavu: rename audioconvert.* to channel_layout.* and deprecate audioconvert.h 2012-11-11 13:35:12 -05:00
avassert.h multiple inclusion guard cleanup 2011-05-21 13:48:10 +02:00
avstring.c avstring-test: Mark pointer passed to av_free() as non-const 2013-10-23 13:17:23 +02:00
avstring.h avstring: Add locale independent versions of some ctype.h functions 2013-03-07 15:16:26 +02:00
avutil.h avutil: move av_get_time_base_q() after include rational.h 2014-04-22 17:35:51 -04:00
base64.c base64-test: Remove posibility of returning restricted exit codes 2013-10-25 11:06:32 +01:00
base64.h doxy: provide a start page and document libavutil 2011-11-22 17:16:02 +01:00
blowfish.c Drop pointless directory name prefixes from #includes in the current dir 2013-09-10 12:38:41 +02:00
blowfish.h Add Blowfish encryption support in libavutil 2012-07-04 15:10:57 +03:00
bswap.h aarch64: bswap inline assembly 2014-01-14 22:19:38 +01:00
buffer_internal.h AVBuffer: add a new API for buffer pools 2013-03-08 07:33:28 +01:00
buffer.c AVBuffer: add a new API for buffer pools 2013-03-08 07:33:28 +01:00
buffer.h avutil: doxy: Small clarification for av_buffer_create() 2013-04-30 13:33:43 -04:00
channel_layout.c Add missing #includes for *INT64_MAX and *INT64_C 2013-11-23 21:55:52 +01:00
channel_layout.h lavu: Add values for various Dolby flags to the AVMatrixEncoding enum. 2014-01-05 16:41:56 +01:00
colorspace.h Replace FFmpeg with Libav in licence headers 2011-03-19 13:33:20 +00:00
common.h Add missing #includes for *INT64_MAX and *INT64_C 2013-11-23 21:55:52 +01:00
cpu_internal.h aarch64: add cpuflags support for NEON and VFP 2014-01-15 12:05:09 +01:00
cpu.c aarch64: add armv8 CPU flag 2014-04-06 21:18:49 +02:00
cpu.h aarch64: add armv8 CPU flag 2014-04-06 21:18:49 +02:00
crc.c crc: add ANSI CRC16 LE 2014-04-17 20:08:19 +02:00
crc.h crc: add ANSI CRC16 LE 2014-04-17 20:08:19 +02:00
des.c Drop pointless directory name prefixes from #includes in the current dir 2013-09-10 12:38:41 +02:00
des.h des: add possibility to calculate DES-CBC-MAC with small buffer 2011-09-21 08:28:20 +02:00
dict.c av_dict_set: fix potential memory leak with AV_DICT_DONT_OVERWRITE 2014-06-09 12:33:19 +02:00
dict.h dict: const correctness for av_dict_get() and av_dict_copy() 2014-06-05 09:16:15 -07:00
display.c display: Include mathematics.h for fallback definition of NAN 2014-05-19 18:34:51 +03:00
display.h Add transformation matrix API. 2014-05-19 13:13:10 +02:00
downmix_info.c lavu: add AV_FRAME_DATA_DOWNMIX_INFO side data type. 2014-02-15 22:24:53 +01:00
downmix_info.h lavu: add AV_FRAME_DATA_DOWNMIX_INFO side data type. 2014-02-15 22:24:53 +01:00
error.c avutil: Add AVERROR_EXPERIMENTAL 2012-10-21 22:38:21 +02:00
error.h error.h: Do not circularly depend on avutil.h 2013-12-25 00:12:05 +01:00
eval.c avutil: remove timer.h include from internal.h 2014-01-25 21:50:20 +01:00
eval.h Fix a bunch of common typos. 2011-12-11 00:32:25 +01:00
fifo.c fifo: K&R formatting cosmetics 2013-07-06 14:28:06 +02:00
fifo.h lavu: remove disabled FF_API_AV_FIFO_PEEK cruft 2012-10-23 07:33:05 +02:00
file_open.c libavutil: Move avpriv_open to a new file, file_open.c 2013-08-10 00:53:33 +03:00
file.c libavutil: Move avpriv_open to a new file, file_open.c 2013-08-10 00:53:33 +03:00
file.h Don't include common.h from avutil.h 2012-08-15 22:32:06 +03:00
float_dsp.c float_dsp: Replace arch optimization ifdefs by if cascade 2014-03-22 14:11:22 +01:00
float_dsp.h aarch64: float_dsp NEON assembler 2014-03-18 22:56:07 +01:00
frame.c AVFrame: factor out freeing the side data 2014-06-18 08:11:05 +02:00
frame.h lavu: add all color-related enums to AVFrame 2014-06-01 08:22:02 +02:00
hmac.c avutil: Add av_cold attributes to init functions missing them 2013-05-04 22:48:05 +02:00
hmac.h lavu: Add an API for calculating HMAC (RFC 2104) 2013-01-15 11:54:19 +02:00
imgutils.c Add av_image_check_sar() and use it to validate SAR 2014-06-20 10:39:33 -04:00
imgutils.h Add av_image_check_sar() and use it to validate SAR 2014-06-20 10:39:33 -04:00
internal.h lavu: add CHK_OFFS as AV_CHECK_OFFSET to check struct member offsets 2014-04-24 18:28:26 +02:00
intfloat.h intfloat: Don't use designated initializers in the public headers 2012-07-02 14:05:40 +03:00
intmath.c lavu: add av_ctz() for trailing zero bit count 2012-11-05 15:32:29 -05:00
intmath.h lavu: add av_ctz() for trailing zero bit count 2012-11-05 15:32:29 -05:00
intreadwrite.h intreadwrite: Add AV_COPYxxU macros for copying to/from unaligned addresses 2012-10-23 16:54:08 +02:00
lfg.c avformat: Remove non-compiling and/or silly commented-out printf/av_log statements 2012-10-01 10:24:28 +02:00
lfg.h Give all anonymously typedeffed structs in headers a name 2012-10-06 09:27:11 +02:00
libavutil.v Revert "avutil: make some tables visible again" 2012-10-23 07:33:05 +02:00
libm.h libm: add fallbacks for various single-precision functions 2012-10-23 12:00:21 +01:00
lls.c x86: lpc: simd av_update_lls 2013-06-29 13:23:57 +02:00
lls.h x86: lpc: simd av_update_lls 2013-06-29 13:23:57 +02:00
log2_tab.c avutil: Duplicate ff_log2_tab instead of sharing it across libs 2012-10-12 20:39:17 +02:00
log.c log: Unbreak windows support 2014-04-03 23:43:47 +02:00
log.h log: Document AV_LOG_C usage 2014-04-03 18:43:24 +02:00
lzo.c lzo: Handle integer overflow 2014-06-23 10:20:57 +02:00
lzo.h avutil: Move memcpy_backptr() to mem.c 2012-10-25 11:36:57 +02:00
macros.h lavu: Move preprocessor macros in a separate file 2013-12-29 22:52:04 +01:00
Makefile Add transformation matrix API. 2014-05-19 13:13:10 +02:00
mathematics.c mathematics: K&R formatting cosmetics 2014-05-03 18:31:18 +02:00
mathematics.h mathematics: Don't use division by zero in NAN/INFINITY macros 2012-07-01 19:06:13 +03:00
md5.c Remove pointless #undefs of previously forbidden functions. 2012-12-04 21:40:22 +01:00
md5.h avutil: Add functions for allocating opaque contexts for algorithms 2012-10-11 23:35:27 +03:00
mem.c Move av_fast_{m,re}alloc from lavc to lavu. 2013-11-14 09:42:22 +01:00
mem.h Move av_fast_{m,re}alloc from lavc to lavu. 2013-11-14 09:42:22 +01:00
old_pix_fmts.h Deprecate obsolete XvMC hardware decoding support 2013-11-13 21:07:45 +01:00
opt.c AVOptions: add flags for read/read-only options 2014-02-19 21:52:17 +01:00
opt.h AVOptions: add flags for read/read-only options 2014-02-19 21:52:17 +01:00
parseutils.c parseutils: fix discarding const attribute warning 2013-12-12 16:10:14 +01:00
parseutils.h doxygen: misc consistency, spelling and wording fixes 2011-12-12 23:06:23 +01:00
pixdesc.c lavu: Add a pixel format for new VDA hwaccel 2014-05-11 14:59:59 +02:00
pixdesc.h Use correct Doxygen syntax 2013-10-03 17:53:51 +02:00
pixfmt.h pixfmt: mark the reserved values 2014-06-23 17:39:03 -04:00
random_seed.c random_seed: Rewrite the generic clock() based seed code 2014-01-06 18:53:58 +02:00
random_seed.h doxy: provide a start page and document libavutil 2011-11-22 17:16:02 +01:00
rational.c Remove commented-out #includes 2013-05-15 23:01:21 +02:00
rational.h rational: add av_inv_q() returning the inverse of an AVRational 2012-08-05 17:46:41 +01:00
rc4.c Replace FFmpeg with Libav in licence headers 2011-03-19 13:33:20 +00:00
rc4.h doxygen: Consistently use '@' instead of '\' for Doxygen markup. 2011-06-24 00:37:49 +02:00
replaygain.h replaygain: correctly parse peak values 2014-04-04 17:40:19 +02:00
samplefmt.c samplefmt: avoid integer overflow in av_samples_get_buffer_size() 2014-02-04 12:32:47 -05:00
samplefmt.h lavu: remove disabled FF_API_GET_BITS_PER_SAMPLE_FMT cruft 2012-10-23 07:33:05 +02:00
sha.c avutil: Add av_cold attributes to init functions missing them 2013-05-04 22:48:05 +02:00
sha.h avutil: Add functions for allocating opaque contexts for algorithms 2012-10-11 23:35:27 +03:00
stereo3d.c avframe: add codec-independent stereoscopic metadata 2013-12-09 16:02:43 +01:00
stereo3d.h stereo3d: add missing include guards 2014-06-19 17:31:49 -04:00
time.c Drop pointless directory name prefixes from #includes in the current dir 2013-09-10 12:38:41 +02:00
time.h lavu: add av_usleep() function 2012-06-22 17:15:18 +01:00
timer.h timer: use mach_absolute_time as high resolution clock on darwin 2014-03-09 00:45:34 +01:00
tree.c tree-test: Don't return restricted exit codes 2013-10-24 10:59:26 +01:00
tree.h tree.h: K&R formatting and typo cosmetics 2013-07-31 18:14:08 +02:00
utils.c avutil: Add av_get_time_base_q() 2014-04-22 16:32:35 -04:00
version.h pixfmt: mark the reserved values 2014-06-23 17:39:03 -04:00
xtea.c xtea: Add Doxy @file and group 2014-04-07 01:31:36 +02:00
xtea.h xtea: Add Doxy @file and group 2014-04-07 01:31:36 +02:00