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Commit Graph

82643 Commits

Author SHA1 Message Date
Hendrik Leppkes
1398ded7a7 Merge commit 'cbbb404055877e3beb9890ffe22784a6a100963e'
* commit 'cbbb404055877e3beb9890ffe22784a6a100963e':
  fate: Restore order of h264 entries

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:27:27 +01:00
Hendrik Leppkes
2f1a539d4b Merge commit '61bd0ed781b56eea1e8e851aab34a2ee3b59fbac'
* commit '61bd0ed781b56eea1e8e851aab34a2ee3b59fbac':
  h264: Log more information about invalid NALu size

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:24:25 +01:00
Hendrik Leppkes
286d8bae61 Merge commit '7b1ae0e73ab7f7c5eabc70dbe2e579127c6e154f'
* commit '7b1ae0e73ab7f7c5eabc70dbe2e579127c6e154f':
  checkasm/arm: preserve the stack alignment checkasm_checked_call

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:21:32 +01:00
Hendrik Leppkes
c0af1ee90d Merge commit '80fbb7becae530167373fe5178966b7d7604306e'
* commit '80fbb7becae530167373fe5178966b7d7604306e':
  checkasm: vp8.mc: initialize the full src buffer after ec32574209

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:20:10 +01:00
Hendrik Leppkes
62d9b7a69b Merge commit '17c99b6158f2c6720af74e81ee727ee50d2e7e96'
* commit '17c99b6158f2c6720af74e81ee727ee50d2e7e96':
  h2645_parse: handle embedded Annex B NAL units in size prefixed NAL units

This commit is a noop, see a9bb4cf87d

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:19:49 +01:00
Hendrik Leppkes
cca4fd4778 Merge commit 'a8cbe5a0ccebf60a8a8b0aba5d5716dd54c1595c'
* commit 'a8cbe5a0ccebf60a8a8b0aba5d5716dd54c1595c':
  h264_ps: export actual height in MBs as SPS.mb_height

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:17:21 +01:00
Hendrik Leppkes
4c5c522fc1 Merge commit '99cf943339a2e5171863c48cd1a73dd43dc243e1'
* commit '99cf943339a2e5171863c48cd1a73dd43dc243e1':
  d3d11va: don't keep the context lock while waiting for a frame

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:06:42 +01:00
Hendrik Leppkes
e999a4ed6c Merge commit '2866d108c9e9da7baf53ff57a51d470691049a57'
* commit '2866d108c9e9da7baf53ff57a51d470691049a57':
  vp8dsp: Remove the comment saying that the height is equal to the width

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:06:28 +01:00
Hendrik Leppkes
90b72f6bda Merge commit '8c816c0c9b12fdefd9046415e97df299880bc9b8'
* commit '8c816c0c9b12fdefd9046415e97df299880bc9b8':
  checkasm/arm: align the clobber check data properly for ldrd

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:06:10 +01:00
Hendrik Leppkes
4fe013fc70 Merge commit 'ec32574209f36467ef0d22c21a7e811ba98c15b6'
* commit 'ec32574209f36467ef0d22c21a7e811ba98c15b6':
  checkasm: vp8: mc: test unequal width/height for partitions

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:05:25 +01:00
Hendrik Leppkes
2818aaaba0 Merge commit '5f74bd31a9bd1ac7655103b11743c12d38e0419f'
* commit '5f74bd31a9bd1ac7655103b11743c12d38e0419f':
  vp8/armv6: mc: avoid boolean expression in calculation

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:05:07 +01:00
Hendrik Leppkes
711b7b7776 Merge commit 'fc5cdc0d5372f5103c71d5dede296734fe71ead2'
* commit 'fc5cdc0d5372f5103c71d5dede296734fe71ead2':
  doc: escape left brace in texi2pod.pl regex

This commit is a noop, see e43ea1cbb2

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:04:37 +01:00
Hendrik Leppkes
da97b244b0 Merge commit 'd825b1a5306576dcd0553b7d0d24a3a46ad92864'
* commit 'd825b1a5306576dcd0553b7d0d24a3a46ad92864':
  libopenh264: Support building with the 1.6 release

This commit is a noop, see 293676c476

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 15:01:35 +01:00
Hendrik Leppkes
4a485daa7f Merge commit '4f7723cb3b913c577842a5bb088c804ddacac8df'
* commit '4f7723cb3b913c577842a5bb088c804ddacac8df':
  movenc: Add an option for skipping writing the mfra/tfra/mfro trailer

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-11-17 14:54:51 +01:00
Carl Eugen Hoyos
55a424c5a8 lavc/ffv1dec: Scale output for msb-packed compression to full 16bit.
2% slowdown for existing decode-line timer.
2016-11-17 13:00:47 +01:00
Carl Eugen Hoyos
f8247c0cce lavc/ffv1enc: Support pix_fmt GRAY10. 2016-11-17 12:47:39 +01:00
Michael Niedermayer
2c9106257f avcodec/mpeg4videodec: Workaround interlaced mpeg4 edge MC bug
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-17 12:21:48 +01:00
Michael Niedermayer
85407c7e63 avcodec/mpegvideo: Fix edge emu buffer overlap with interlaced mpeg4
Fixes Ticket5936
Regression since c5fc8ae126

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-17 12:21:48 +01:00
Martin Vignali
52da3f6f70 libavcodec/exr : fix channel size calculation for uint32 channel
uint32 need 4 bytes not 1.
Fix decoding when there is half/float and uint32 channel.

This fixes crashes due to pointer corruption caused by invalid writes.

The problem was introduced in commit
03152e74df.

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-16 23:45:44 +01:00
Andreas Cadhalpun
ce3147eb19 exr: reindent after previous commit
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-16 22:37:24 +01:00
Andreas Cadhalpun
ffdc5d09e4 exr: fix out-of-bounds read
channel_index can be -1.

This problem was introduced in commit
2dd7b46132.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-16 22:37:17 +01:00
Michael Niedermayer
721c90f0f9 avutil/frame: fix indention after last commit
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-16 21:25:45 +01:00
Michael Niedermayer
2acee08a4a avutil/frame: Copy size=0 side data in ff_init_buffer_info()
Fixes null pointer dereference
Fixes: 189/FOO

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-16 21:25:45 +01:00
Andreas Cadhalpun
3c0328d58d libschroedingerdec: fix leaking of framewithpts
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-16 19:31:11 +01:00
Andreas Cadhalpun
a86ebbf7f6 libschroedingerdec: don't produce empty frames
They are not valid and can cause problems/crashes for API users.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-16 19:30:49 +01:00
Andreas Cadhalpun
90ebf3c428 dds: limit 4 bpp handling to AV_PIX_FMT_PAL8
This fixes NULL pointer dereferencing for formats, where frame->data[1]
is not allocated.

The problem was introduced in commit
257fbc3af4.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-16 19:29:45 +01:00
kieranjol
605f3084fc doc/filters: adds recently added -vf colorspace options
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-16 15:06:16 +01:00
Michael Niedermayer
d79d8ef927 cmdutils: remove duplicate windows.h include
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-16 15:06:16 +01:00
Hendrik Leppkes
99218ee30d configure: properly add dxva2 link dependencies
Fixes building with --disable-everything --enable-shared --enable-dxva2

The hwcontext DXVA2 implementation in avutil needs this library now, instead
of just the ffmpeg program.
2016-11-16 14:14:28 +01:00
Vittorio Giovara
00c8079816 fate: Add h264 extradata reload tests
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-16 02:43:19 +01:00
Thierry Foucu
c512546689 Fix -Werror=parentheses error
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-16 02:39:57 +01:00
Michael Niedermayer
1546d487cf avcodec/rv40: Test remaining space in loop of get_dimension()
Fixes infinite loop
Fixes: 178/fuzz-3-ffmpeg_VIDEO_AV_CODEC_ID_RV40_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-15 23:08:43 +01:00
Andreas Cadhalpun
1abcd972c4 mlz: limit next_code to data buffer size
This fixes a heap-buffer-overflow detected by AddressSanitizer.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-15 22:01:08 +01:00
Martin Storsjö
f1212e472b aarch64: vp9: Implement NEON loop filters
This work is sponsored by, and copyright, Google.

These are ported from the ARM version; thanks to the larger
amount of registers available, we can do the loop filters with
16 pixels at a time. The implementation is fully templated, with
a single macro which can generate versions for both 8 and
16 pixels wide, for both 4, 8 and 16 pixels loop filters
(and the 4/8 mixed versions as well).

For the 8 pixel wide versions, it is pretty close in speed (the
v_4_8 and v_8_8 filters are the best examples of this; the h_4_8
and h_8_8 filters seem to get some gain in the load/transpose/store
part). For the 16 pixels wide ones, we get a speedup of around
1.2-1.4x compared to the 32 bit version.

Examples of runtimes vs the 32 bit version, on a Cortex A53:
                                       ARM AArch64
vp9_loop_filter_h_4_8_neon:          144.0   127.2
vp9_loop_filter_h_8_8_neon:          207.0   182.5
vp9_loop_filter_h_16_8_neon:         415.0   328.7
vp9_loop_filter_h_16_16_neon:        672.0   558.6
vp9_loop_filter_mix2_h_44_16_neon:   302.0   203.5
vp9_loop_filter_mix2_h_48_16_neon:   365.0   305.2
vp9_loop_filter_mix2_h_84_16_neon:   365.0   305.2
vp9_loop_filter_mix2_h_88_16_neon:   376.0   305.2
vp9_loop_filter_mix2_v_44_16_neon:   193.2   128.2
vp9_loop_filter_mix2_v_48_16_neon:   246.7   218.4
vp9_loop_filter_mix2_v_84_16_neon:   248.0   218.5
vp9_loop_filter_mix2_v_88_16_neon:   302.0   218.2
vp9_loop_filter_v_4_8_neon:           89.0    88.7
vp9_loop_filter_v_8_8_neon:          141.0   137.7
vp9_loop_filter_v_16_8_neon:         295.0   272.7
vp9_loop_filter_v_16_16_neon:        546.0   453.7

The speedup vs C code in checkasm tests is around 2-7x, which is
pretty much the same as for the 32 bit version. Even if these functions
are faster than their 32 bit equivalent, the C version that we compare
to also became around 1.3-1.7x faster than the C version in 32 bit.

Based on START_TIMER/STOP_TIMER wrapping around a few individual
functions, the speedup vs C code is around 4-5x.

Examples of runtimes vs C on a Cortex A57 (for a slightly older version
of the patch):
                         A57 gcc-5.3  neon
loop_filter_h_4_8_neon:        256.6  93.4
loop_filter_h_8_8_neon:        307.3 139.1
loop_filter_h_16_8_neon:       340.1 254.1
loop_filter_h_16_16_neon:      827.0 407.9
loop_filter_mix2_h_44_16_neon: 524.5 155.4
loop_filter_mix2_h_48_16_neon: 644.5 173.3
loop_filter_mix2_h_84_16_neon: 630.5 222.0
loop_filter_mix2_h_88_16_neon: 697.3 222.0
loop_filter_mix2_v_44_16_neon: 598.5 100.6
loop_filter_mix2_v_48_16_neon: 651.5 127.0
loop_filter_mix2_v_84_16_neon: 591.5 167.1
loop_filter_mix2_v_88_16_neon: 855.1 166.7
loop_filter_v_4_8_neon:        271.7  65.3
loop_filter_v_8_8_neon:        312.5 106.9
loop_filter_v_16_8_neon:       473.3 206.5
loop_filter_v_16_16_neon:      976.1 327.8

The speed-up compared to the C functions is 2.5 to 6 and the cortex-a57
is again 30-50% faster than the cortex-a53.

This is an adapted cherry-pick from libav commits
9d2afd1eb8 and
31756abe29.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
f43079e11c aarch64: vp9: Add NEON itxfm routines
This work is sponsored by, and copyright, Google.

These are ported from the ARM version; thanks to the larger
amount of registers available, we can do the 16x16 and 32x32
transforms in slices 8 pixels wide instead of 4. This gives
a speedup of around 1.4x compared to the 32 bit version.

The fact that aarch64 doesn't have the same d/q register
aliasing makes some of the macros quite a bit simpler as well.

Examples of runtimes vs the 32 bit version, on a Cortex A53:
                                       ARM  AArch64
vp9_inv_adst_adst_4x4_add_neon:       90.0     87.7
vp9_inv_adst_adst_8x8_add_neon:      400.0    354.7
vp9_inv_adst_adst_16x16_add_neon:   2526.5   1827.2
vp9_inv_dct_dct_4x4_add_neon:         74.0     72.7
vp9_inv_dct_dct_8x8_add_neon:        271.0    256.7
vp9_inv_dct_dct_16x16_add_neon:     1960.7   1372.7
vp9_inv_dct_dct_32x32_add_neon:    11988.9   8088.3
vp9_inv_wht_wht_4x4_add_neon:         63.0     57.7

The speedup vs C code (2-4x) is smaller than in the 32 bit case,
mostly because the C code ends up significantly faster (around
1.6x faster, with GCC 5.4) when built for aarch64.

Examples of runtimes vs C on a Cortex A57 (for a slightly older version
of the patch):
                                A57 gcc-5.3   neon
vp9_inv_adst_adst_4x4_add_neon:       152.2   60.0
vp9_inv_adst_adst_8x8_add_neon:       948.2  288.0
vp9_inv_adst_adst_16x16_add_neon:    4830.4 1380.5
vp9_inv_dct_dct_4x4_add_neon:         153.0   58.6
vp9_inv_dct_dct_8x8_add_neon:         789.2  180.2
vp9_inv_dct_dct_16x16_add_neon:      3639.6  917.1
vp9_inv_dct_dct_32x32_add_neon:     20462.1 4985.0
vp9_inv_wht_wht_4x4_add_neon:          91.0   49.8

The asm is around factor 3-4 faster than C on the cortex-a57 and the asm
is around 30-50% faster on the a57 compared to the a53.

This is an adapted cherry-pick from libav commit
3c9546dfaf.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
1f7801c2bc aarch64: vp9: Add NEON optimizations of VP9 MC functions
This work is sponsored by, and copyright, Google.

These are ported from the ARM version; it is essentially a 1:1
port with no extra added features, but with some hand tuning
(especially for the plain copy/avg functions). The ARM version
isn't very register starved to begin with, so there's not much
to be gained from having more spare registers here - we only
avoid having to clobber callee-saved registers.

Examples of runtimes vs the 32 bit version, on a Cortex A53:
                                     ARM   AArch64
vp9_avg4_neon:                      27.2      23.7
vp9_avg8_neon:                      56.5      54.7
vp9_avg16_neon:                    169.9     167.4
vp9_avg32_neon:                    585.8     585.2
vp9_avg64_neon:                   2460.3    2294.7
vp9_avg_8tap_smooth_4h_neon:       132.7     125.2
vp9_avg_8tap_smooth_4hv_neon:      478.8     442.0
vp9_avg_8tap_smooth_4v_neon:       126.0      93.7
vp9_avg_8tap_smooth_8h_neon:       241.7     234.2
vp9_avg_8tap_smooth_8hv_neon:      690.9     646.5
vp9_avg_8tap_smooth_8v_neon:       245.0     205.5
vp9_avg_8tap_smooth_64h_neon:    11273.2   11280.1
vp9_avg_8tap_smooth_64hv_neon:   22980.6   22184.1
vp9_avg_8tap_smooth_64v_neon:    11549.7   10781.1
vp9_put4_neon:                      18.0      17.2
vp9_put8_neon:                      40.2      37.7
vp9_put16_neon:                     97.4      99.5
vp9_put32_neon/armv8:              346.0     307.4
vp9_put64_neon/armv8:             1319.0    1107.5
vp9_put_8tap_smooth_4h_neon:       126.7     118.2
vp9_put_8tap_smooth_4hv_neon:      465.7     434.0
vp9_put_8tap_smooth_4v_neon:       113.0      86.5
vp9_put_8tap_smooth_8h_neon:       229.7     221.6
vp9_put_8tap_smooth_8hv_neon:      658.9     621.3
vp9_put_8tap_smooth_8v_neon:       215.0     187.5
vp9_put_8tap_smooth_64h_neon:    10636.7   10627.8
vp9_put_8tap_smooth_64hv_neon:   21076.8   21026.9
vp9_put_8tap_smooth_64v_neon:     9635.0    9632.4

These are generally about as fast as the corresponding ARM
routines on the same CPU (at least on the A53), in most cases
marginally faster.

The speedup vs C code is pretty much the same as for the 32 bit
case; on the A53 it's around 6-13x for ther larger 8tap filters.
The exact speedup varies a little, since the C versions generally
don't end up exactly as slow/fast as on 32 bit.

This is an adapted cherry-pick from libav commit
383d96aa22.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
7fe898dbb9 aarch64: Add an offset parameter to the movrel macro
With apple tools, the linker fails with errors like these, if the
offset is negative:

ld: in section __TEXT,__text reloc 8: symbol index out of range for architecture arm64

This is cherry-picked from libav commit
c44a8a3eab.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
6bec60a683 arm: vp9: Add NEON loop filters
This work is sponsored by, and copyright, Google.

The implementation tries to have smart handling of cases
where no pixels need the full filtering for the 8/16 width
filters, skipping both calculation and writeback of the
unmodified pixels in those cases. The actual effect of this
is hard to test with checkasm though, since it tests the
full filtering, and the benefit depends on how many filtered
blocks use the shortcut.

Examples of relative speedup compared to the C version, from checkasm:
                          Cortex       A7     A8     A9    A53
vp9_loop_filter_h_4_8_neon:          2.72   2.68   1.78   3.15
vp9_loop_filter_h_8_8_neon:          2.36   2.38   1.70   2.91
vp9_loop_filter_h_16_8_neon:         1.80   1.89   1.45   2.01
vp9_loop_filter_h_16_16_neon:        2.81   2.78   2.18   3.16
vp9_loop_filter_mix2_h_44_16_neon:   2.65   2.67   1.93   3.05
vp9_loop_filter_mix2_h_48_16_neon:   2.46   2.38   1.81   2.85
vp9_loop_filter_mix2_h_84_16_neon:   2.50   2.41   1.73   2.85
vp9_loop_filter_mix2_h_88_16_neon:   2.77   2.66   1.96   3.23
vp9_loop_filter_mix2_v_44_16_neon:   4.28   4.46   3.22   5.70
vp9_loop_filter_mix2_v_48_16_neon:   3.92   4.00   3.03   5.19
vp9_loop_filter_mix2_v_84_16_neon:   3.97   4.31   2.98   5.33
vp9_loop_filter_mix2_v_88_16_neon:   3.91   4.19   3.06   5.18
vp9_loop_filter_v_4_8_neon:          4.53   4.47   3.31   6.05
vp9_loop_filter_v_8_8_neon:          3.58   3.99   2.92   5.17
vp9_loop_filter_v_16_8_neon:         3.40   3.50   2.81   4.68
vp9_loop_filter_v_16_16_neon:        4.66   4.41   3.74   6.02

The speedup vs C code is around 2-6x. The numbers are quite
inconclusive though, since the checkasm test runs multiple filterings
on top of each other, so later rounds might end up with different
codepaths (different decisions on which filter to apply, based
on input pixel differences). Disabling the early-exit in the asm
doesn't give a fair comparison either though, since the C code
only does the necessary calcuations for each row.

Based on START_TIMER/STOP_TIMER wrapping around a few individual
functions, the speedup vs C code is around 4-9x.

This is pretty similar in runtime to the corresponding routines
in libvpx. (This is comparing vpx_lpf_vertical_16_neon,
vpx_lpf_horizontal_edge_8_neon and vpx_lpf_horizontal_edge_16_neon
to vp9_loop_filter_h_16_8_neon, vp9_loop_filter_v_16_8_neon
and vp9_loop_filter_v_16_16_neon - note that the naming of horizonal
and vertical is flipped between the libraries.)

In order to have stable, comparable numbers, the early exits in both
asm versions were disabled, forcing the full filtering codepath.

                           Cortex           A7      A8      A9     A53
vp9_loop_filter_h_16_8_neon:             597.2   472.0   482.4   415.0
libvpx vpx_lpf_vertical_16_neon:         626.0   464.5   470.7   445.0
vp9_loop_filter_v_16_8_neon:             500.2   422.5   429.7   295.0
libvpx vpx_lpf_horizontal_edge_8_neon:   586.5   414.5   415.6   383.2
vp9_loop_filter_v_16_16_neon:            905.0   784.7   791.5   546.0
libvpx vpx_lpf_horizontal_edge_16_neon: 1060.2   751.7   743.5   685.2

Our version is consistently faster on on A7 and A53, marginally slower on
A8, and sometimes faster, sometimes slower on A9 (marginally slower in all
three tests in this particular test run).

This is an adapted cherry-pick from libav commit
dd299a2d6d.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
b4dc7c341e arm: vp9: Add NEON itxfm routines
This work is sponsored by, and copyright, Google.

For the transforms up to 8x8, we can fit all the data (including
temporaries) in registers and just do a straightforward transform
of all the data. For 16x16, we do a transform of 4x16 pixels in
4 slices, using a temporary buffer. For 32x32, we transform 4x32
pixels at a time, in two steps of 4x16 pixels each.

Examples of relative speedup compared to the C version, from checkasm:
                         Cortex       A7     A8     A9    A53
vp9_inv_adst_adst_4x4_add_neon:     3.39   5.83   4.17   4.01
vp9_inv_adst_adst_8x8_add_neon:     3.79   4.86   4.23   3.98
vp9_inv_adst_adst_16x16_add_neon:   3.33   4.36   4.11   4.16
vp9_inv_dct_dct_4x4_add_neon:       4.06   6.16   4.59   4.46
vp9_inv_dct_dct_8x8_add_neon:       4.61   6.01   4.98   4.86
vp9_inv_dct_dct_16x16_add_neon:     3.35   3.44   3.36   3.79
vp9_inv_dct_dct_32x32_add_neon:     3.89   3.50   3.79   4.42
vp9_inv_wht_wht_4x4_add_neon:       3.22   5.13   3.53   3.77

Thus, the speedup vs C code is around 3-6x.

This is mostly marginally faster than the corresponding routines
in libvpx on most cores, tested with their 32x32 idct (compared to
vpx_idct32x32_1024_add_neon). These numbers are slightly in libvpx's
favour since their version doesn't clear the input buffer like ours
do (although the effect of that on the total runtime probably is
negligible.)

                           Cortex       A7       A8       A9      A53
vp9_inv_dct_dct_32x32_add_neon:    18436.8  16874.1  14235.1  11988.9
libvpx vpx_idct32x32_1024_add_neon 20789.0  13344.3  15049.9  13030.5

Only on the Cortex A8, the libvpx function is faster. On the other cores,
ours is slightly faster even though ours has got source block clearing
integrated.

This is an adapted cherry-pick from libav commits
a67ae67083 and
52d196fb30.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
68caef9d48 arm: vp9: Add NEON optimizations of VP9 MC functions
This work is sponsored by, and copyright, Google.

The filter coefficients are signed values, where the product of the
multiplication with one individual filter coefficient doesn't
overflow a 16 bit signed value (the largest filter coefficient is
127). But when the products are accumulated, the resulting sum can
overflow the 16 bit signed range. Instead of accumulating in 32 bit,
we accumulate the largest product (either index 3 or 4) last with a
saturated addition.

(The VP8 MC asm does something similar, but slightly simpler, by
accumulating each half of the filter separately. In the VP9 MC
filters, each half of the filter can also overflow though, so the
largest component has to be handled individually.)

Examples of relative speedup compared to the C version, from checkasm:
                       Cortex      A7     A8     A9    A53
vp9_avg4_neon:                   1.71   1.15   1.42   1.49
vp9_avg8_neon:                   2.51   3.63   3.14   2.58
vp9_avg16_neon:                  2.95   6.76   3.01   2.84
vp9_avg32_neon:                  3.29   6.64   2.85   3.00
vp9_avg64_neon:                  3.47   6.67   3.14   2.80
vp9_avg_8tap_smooth_4h_neon:     3.22   4.73   2.76   4.67
vp9_avg_8tap_smooth_4hv_neon:    3.67   4.76   3.28   4.71
vp9_avg_8tap_smooth_4v_neon:     5.52   7.60   4.60   6.31
vp9_avg_8tap_smooth_8h_neon:     6.22   9.04   5.12   9.32
vp9_avg_8tap_smooth_8hv_neon:    6.38   8.21   5.72   8.17
vp9_avg_8tap_smooth_8v_neon:     9.22  12.66   8.15  11.10
vp9_avg_8tap_smooth_64h_neon:    7.02  10.23   5.54  11.58
vp9_avg_8tap_smooth_64hv_neon:   6.76   9.46   5.93   9.40
vp9_avg_8tap_smooth_64v_neon:   10.76  14.13   9.46  13.37
vp9_put4_neon:                   1.11   1.47   1.00   1.21
vp9_put8_neon:                   1.23   2.17   1.94   1.48
vp9_put16_neon:                  1.63   4.02   1.73   1.97
vp9_put32_neon:                  1.56   4.92   2.00   1.96
vp9_put64_neon:                  2.10   5.28   2.03   2.35
vp9_put_8tap_smooth_4h_neon:     3.11   4.35   2.63   4.35
vp9_put_8tap_smooth_4hv_neon:    3.67   4.69   3.25   4.71
vp9_put_8tap_smooth_4v_neon:     5.45   7.27   4.49   6.52
vp9_put_8tap_smooth_8h_neon:     5.97   8.18   4.81   8.56
vp9_put_8tap_smooth_8hv_neon:    6.39   7.90   5.64   8.15
vp9_put_8tap_smooth_8v_neon:     9.03  11.84   8.07  11.51
vp9_put_8tap_smooth_64h_neon:    6.78   9.48   4.88  10.89
vp9_put_8tap_smooth_64hv_neon:   6.99   8.87   5.94   9.56
vp9_put_8tap_smooth_64v_neon:   10.69  13.30   9.43  14.34

For the larger 8tap filters, the speedup vs C code is around 5-14x.

This is significantly faster than libvpx's implementation of the same
functions, at least when comparing the put_8tap_smooth_64 functions
(compared to vpx_convolve8_horiz_neon and vpx_convolve8_vert_neon from
libvpx).

Absolute runtimes from checkasm:
                          Cortex      A7        A8        A9       A53
vp9_put_8tap_smooth_64h_neon:    20150.3   14489.4   19733.6   10863.7
libvpx vpx_convolve8_horiz_neon: 52623.3   19736.4   21907.7   25027.7

vp9_put_8tap_smooth_64v_neon:    14455.0   12303.9   13746.4    9628.9
libvpx vpx_convolve8_vert_neon:  42090.0   17706.2   17659.9   16941.2

Thus, on the A9, the horizontal filter is only marginally faster than
libvpx, while our version is significantly faster on the other cores,
and the vertical filter is significantly faster on all cores. The
difference is especially large on the A7.

The libvpx implementation does the accumulation in 32 bit, which
probably explains most of the differences.

This is an adapted cherry-pick from libav commits
ffbd1d2b00,
392caa65df,
557c1675cf and
11623217e3.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
86c5a23ee5 arm: Clear the gp register alias at the end of functions
We reset .Lpic_gp to zero at the start of each function, which means
that the logic within movrelx for clearing gp when necessary will
be missed.

This fixes using movrelx in different functions with a different
helper register.

This is cherry-picked from libav commit
824e8c2840.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Martin Storsjö
6409e9b6cc vp9dsp: Deduplicate the subpel filters
Make them aligned, to allow efficient access to them from simd.

This is an adapted cherry-pick from libav commit
a4cfcddcb0.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2016-11-15 15:10:03 -05:00
Michael Niedermayer
2baf36caed avcodec/ituh263dec: Avoid spending a long time in slice sync
Fixes: 177/fuzz-3-ffmpeg_VIDEO_AV_CODEC_ID_FLV1_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-15 18:27:31 +01:00
Ronald S. Bultje
83a139e3d8 vp9: add avx2 iadst16 implementations.
Also a small cosmetic change to the avx2 idct16 version to make it
explicit that one of the arguments to the write-out macros is unused
for >=avx2 (it uses pmovzxbw instead of punpcklbw).
2016-11-15 11:01:36 -05:00
Michael Niedermayer
0eb3198005 avcodec/movtextdec: Add error message for tsmb_size check
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-15 15:08:20 +01:00
Michael Niedermayer
a609905723 avcodec/movtextdec: Fix tsmb_size check==0 check
Fixes: 173/fuzz-3-ffmpeg_SUBTITLE_AV_CODEC_ID_MOV_TEXT_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-15 15:08:20 +01:00
Michael Niedermayer
6ea2715768 avcodec/movtextdec: Fix potential integer overflow
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-11-15 15:08:20 +01:00
Andreas Cadhalpun
0edd569466 softfloat: handle -INT_MAX correctly
This is similar to commit 9ac61e73d0.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2016-11-14 22:57:07 +01:00
Martin Vignali
d0d6902444 doc/filters: add metadata information for blackframe
Reviewed-by: Moritz Barsnick <barsnick@gmx.net>
Signed-off-by: Lou Logan <lou@lrcd.com>
2016-11-14 11:59:52 -09:00
James Almer
2d9433ded9 doc/codecs.texi: add new and missing color related options
Found-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
2016-11-14 15:15:53 -03:00