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* ac3enc_fixed: convert to 32-bit sample formatLynne2021-01-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The AC3 encoder used to be a separate library called "Aften", which got merged into libavcodec (literally, SVN commits and all). The merge preserved as much features from the library as possible. The code had two versions - a fixed point version and a floating point version. FFmpeg had floating point DSP code used by other codecs, the AC3 decoder including, so the floating-point DSP was simply replaced with FFmpeg's own functions. However, FFmpeg had no fixed-point audio code at that point. So the encoder brought along its own fixed-point DSP functions, including a fixed-point MDCT. The fixed-point MDCT itself is trivially just a float MDCT with a different type and each multiply being a fixed-point multiply. So over time, it got refactored, and the FFT used for all other codecs was templated. Due to design decisions at the time, the fixed-point version of the encoder operates at 16-bits of precision. Although convenient, this, even at the time, was inadequate and inefficient. The encoder is noisy, does not produce output comparable to the float encoder, and even rings at higher frequencies due to the badly approximated winow function. Enter MIPS (owned by Imagination Technologies at the time). They wanted quick fixed-point decoding on their FPUless cores. So they contributed patches to template the AC3 decoder so it had both a fixed-point and a floating-point version. They also did the same for the AAC decoder. They however, used 32-bit samples. Not 16-bits. And we did not have 32-bit fixed-point DSP functions, including an MDCT. But instead of templating our MDCT to output 3 versions (float, 32-bit fixed and 16-bit fixed), they simply copy-pasted their own MDCT into ours, and completely ifdeffed our own MDCT code out if a 32-bit fixed point MDCT was selected. This is also the status quo nowadays - 2 separate MDCTs, one which produces floating point and 16-bit fixed point versions, and one sort-of integrated which produces 32-bit MDCT. MIPS weren't all that interested in encoding, so they left the encoder as-is, and they didn't care much about the ifdeffery, mess or quality - it's not their problem. So the MDCT/FFT code has always been a thorn in anyone looking to clean up code's eye. Backstory over. Internally AC3 operates on 25-bit fixed-point coefficients. So for the floating point version, the encoder simply runs the float MDCT, and converts the resulting coefficients to 25-bit fixed-point, as AC3 is inherently a fixed-point codec. For the fixed-point version, the input is 16-bit samples, so to maximize precision the frame samples are analyzed and the highest set bit is detected via ac3_max_msb_abs_int16(), and the coefficients are then scaled up via ac3_lshift_int16(), so the input for the FFT is always at least 14 bits, computed in normalize_samples(). After FFT, the coefficients are scaled up to 25 bits. This patch simply changes the encoder to accept 32-bit samples, reusing the already well-optimized 32-bit MDCT code, allowing us to clean up and drop a large part of a very messy code of ours, as well as prepare for the future lavu/tx conversion. The coefficients are simply scaled down to 25 bits during windowing, skipping 2 separate scalings, as the hacks to extend precision are simply no longer necessary. There's no point in running the MDCT always at 32 bits when you're going to drop 6 bits off anyway, the headroom is plenty, and the MDCT rounds properly. This also makes the encoder even slightly more accurate over the float version, as there's no coefficient conversion step necessary. SIZE SAVINGS: ARM32: HARDCODED TABLES: BASE - 10709590 DROP DSP - 10702872 - diff: -6.56KiB DROP MDCT - 10667932 - diff: -34.12KiB - both: -40.68KiB DROP FFT - 10336652 - diff: -323.52KiB - all: -364.20KiB SOFTCODED TABLES: BASE - 9685096 DROP DSP - 9678378 - diff: -6.56KiB DROP MDCT - 9643466 - diff: -34.09KiB - both: -40.65KiB DROP FFT - 9573918 - diff: -67.92KiB - all: -108.57KiB ARM64: HARDCODED TABLES: BASE - 14641112 DROP DSP - 14633806 - diff: -7.13KiB DROP MDCT - 14604812 - diff: -28.31KiB - both: -35.45KiB DROP FFT - 14286826 - diff: -310.53KiB - all: -345.98KiB SOFTCODED TABLES: BASE - 13636238 DROP DSP - 13628932 - diff: -7.13KiB DROP MDCT - 13599866 - diff: -28.38KiB - both: -35.52KiB DROP FFT - 13542080 - diff: -56.43KiB - all: -91.95KiB x86: HARDCODED TABLES: BASE - 12367336 DROP DSP - 12354698 - diff: -12.34KiB DROP MDCT - 12331024 - diff: -23.12KiB - both: -35.46KiB DROP FFT - 12029788 - diff: -294.18KiB - all: -329.64KiB SOFTCODED TABLES: BASE - 11358094 DROP DSP - 11345456 - diff: -12.34KiB DROP MDCT - 11321742 - diff: -23.16KiB - both: -35.50KiB DROP FFT - 11276946 - diff: -43.75KiB - all: -79.25KiB PERFORMANCE (10min random s32le): ARM32 - before - 39.9x - 0m15.046s ARM32 - after - 28.2x - 0m21.525s Speed: -30% ARM64 - before - 36.1x - 0m16.637s ARM64 - after - 36.0x - 0m16.727s Speed: -0.5% x86 - before - 184x - 0m3.277s x86 - after - 190x - 0m3.187s Speed: +3%
* fate: disable automatic conversions on many tests.Nicolas George2020-09-081-10/+10
| | | | | | | | | | Explicitly insert the scale or aresample filter where it would have been inserted by the negotiation. Re-enable conversions if it cannot be done easily. If a conversion is needed in a test, we want to know about it. If the negotiation changes and makes new conversion necessary, we want to know about it even more.
* fate/ffmpeg: add test for time limited sub2video instanceJan Ekström2020-03-161-0/+10
| | | | | | | | | | | | Utilizes a subpicture sample with one decodable subpicture for the test. Based on a failing test case in reported by Michael in https://ffmpeg.org/pipermail/ffmpeg-devel/2019-February/240398.html which at the time had no test case for it. Additionally, this is the first test case for the presentation graphics format.
* fate/ffmpeg: add a second, simple sub2video testJan Ekström2020-03-161-0/+9
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* fate: Fix dependencies to sample files to use local pathsMartin Storsjö2019-12-121-16/+16
| | | | | | | These dependencies are evaluted by make and must be expressed with the paths as in the local filesystem. Signed-off-by: Martin Storsjö <martin@martin.st>
* fate: add test for stream_loopGyan Doshi2019-09-051-0/+4
| | | | Checks that seek to start indeed seeks to start.
* tests: don't include TARGET_PATH in the sample path needlesslyHendrik Leppkes2019-04-191-1/+1
| | | | | | The transcode() helper function will already prepend the TARGET_PATH to the sample path, if its a relative path. This avoids an issue on Windows, where the relative path check could fail.
* tests/fate/ffmpeg: Check for apng codec for fate-copy-apng.Carl Eugen Hoyos2019-03-151-1/+1
| | | | The file has to be created first, fixes fate without zlib.
* Merge commit 'f8df5e2f31a5ba7b30a0e1caaaf5a03c753b3f9b'James Almer2019-03-141-0/+4
| | | | | | | * commit 'f8df5e2f31a5ba7b30a0e1caaaf5a03c753b3f9b': tests: Add a convenience function for video-only lavf tests Merged-by: James Almer <jamrial@gmail.com>
* fate: change fate-ffmpeg-attached_pics to encode to pcm_s16leMarton Balint2017-10-281-3/+3
| | | | | | | | Previously alac encoder was used, from a first glance I thought it is bitexact, but it turns out it is using floating point arithmetic as well, so probably it is not. Fixes fate failures on mingw32/64. Signed-off-by: Marton Balint <cus@passwd.hu>
* fate: fix ffmpeg-attached_pics test dependenciesMarton Balint2017-10-271-1/+1
| | | | Signed-off-by: Marton Balint <cus@passwd.hu>
* fate: add fate test for ticket #6375Marton Balint2017-10-271-0/+4
| | | | Signed-off-by: Marton Balint <cus@passwd.hu>
* fate: add fate test for ticket #6603Marton Balint2017-10-271-0/+4
| | | | Signed-off-by: Marton Balint <cus@passwd.hu>
* Merge commit '4141a5a240fba44b4b4a1c488c279d7dd8a11ec7'James Almer2017-10-031-1/+1
| | | | | | | * commit '4141a5a240fba44b4b4a1c488c279d7dd8a11ec7': Use modern avconv syntax for codec selection in documentation and tests Merged-by: James Almer <jamrial@gmail.com>
* ffmpeg options: Enable trailing ? for map_channelpkviet2017-08-251-0/+8
| | | | | | | | | | | The -map option allows for a trailing ? so that an error is not thrown if the input stream does not exist. This capability is extended to the map_channel option. This allows a ffmpeg command not to break if an input channel does not exist, which can be of use (for instance, scripts processing audio channels with sources having unset number of audio channels). Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate: Add fate-copy-trac3074Michael Niedermayer2017-06-301-0/+6
| | | | Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate: add test for -time_base optionMichael Bradshaw2017-06-101-0/+6
| | | | | Signed-off-by: Michael Bradshaw <mjbshaw@google.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* Merge commit '043b0b9fb1481053b712d06d2c5b772f1845b72b'Clément Bœsch2017-03-241-2/+2
| | | | | | | | | * commit '043b0b9fb1481053b712d06d2c5b772f1845b72b': Replace leftover uses of -aframes|-dframes|-vframes with -frames:a|d|v The merge also includes all our own occurences. Merged-by: Clément Bœsch <u@pkh.me>
* fate/colorkey: disable audio stream.Nicolas George2016-11-131-1/+1
| | | | | | | The test is not supposed to cover audio. Also, using -vframes along with an audio stream depends on the exact order the frames are processed by filters, it is too much constraint to guarantee.
* fate: add bsf tests for ticket 5927James Almer2016-11-041-0/+6
| | | | | Tested-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: James Almer <jamrial@gmail.com>
* fate: Add PSP copy testMichael Niedermayer2016-10-031-0/+5
| | | | Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate: add Test for h264_mp4toannexb (ticket2991)Michael Niedermayer2016-09-231-0/+5
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* tests/fate/ffmpeg: Remove dead automatic remove extradata test update the ↵Michael Niedermayer2016-09-231-5/+2
| | | | | | | keyframe test Found-by: jamrial Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* tests/fate: Add fate-ffmpeg-bsf-remove-* testsMichael Niedermayer2016-09-231-0/+14
| | | | Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate: add aac_adtstoasc test (Ticket 3715)Michael Niedermayer2016-09-201-0/+5
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* fate: Add rgb24-mkv testMichael Niedermayer2016-09-201-0/+6
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* fate: Add copy-trac2211-avi testMichael Niedermayer2016-09-101-0/+5
| | | | Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* tests/fate/ffmpeg: regroup stream copy tests under a fate-streamcopy ruleClément Bœsch2016-09-091-4/+8
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* tests/fate/ffmpeg: add simple ts->avi copy testMichael Niedermayer2016-09-061-0/+5
| | | | | Approved-by: ubitux Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* tests/fate/ffmpeg: add test for mpegts->mxf steram copy (Ticket 4914)Michael Niedermayer2016-09-061-0/+5
| | | | | Approved-by: ubitux Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* test/fate: Add Ticket 236 / mov stream copy testMichael Niedermayer2016-09-061-0/+5
| | | | | Approved-by: ubitux Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate/ffmpeg: Fix colorkey test failure without samplesMichael Niedermayer2016-01-231-1/+1
| | | | Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate: Add test for colorkeyMichael Niedermayer2016-01-211-0/+4
| | | | Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate: add limited_input_seek testsSimon Thelen2015-12-071-0/+6
| | | | | Signed-off-by: Simon Thelen <ffmpeg-dev@c-14.de> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* fate: add -fflags +bitexact in a few places.Ronald S. Bultje2015-08-171-5/+5
| | | | | This improves results after FF_API_LAVF_BITEXACT=0. It still doesn't pass, because of mov rtphint track which I don't understand (yet).
* tests: Rename vsynth2 to vsynth_lenaMichael Niedermayer2014-12-021-4/+4
| | | | | | This avoids confusion with a growing number of vsynth tests Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* Remove non-free tests/lena.pnm and adapt FATE tests to depend on lena.pnm in ↵Andreas Cadhalpun2014-09-041-1/+1
| | | | | | the SAMPLES directory Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* Fix TARGET_SAMPLES and TARGET_PATH for some fate tests.Carl Eugen Hoyos2014-03-181-5/+5
| | | | | This allows running more fate tests on remote targets without the source tree.
* fate: add tests for unknown channel layouts.Nicolas George2013-04-111-0/+11
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* fate: add a test for -filter_complex / -lavfi without input.Nicolas George2013-03-171-0/+6
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* ffmpeg: port sub2video to AVFrame.Nicolas George2013-03-101-1/+1
| | | | And re-enable the FATE test.
* fate: disable sub2videoMichael Niedermayer2013-03-101-1/+1
| | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* Add some fate dependencies to fix make fate with --disable-everything.Carl Eugen Hoyos2013-03-091-4/+6
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* fate/sub2video: move sws flags globally in the filtergraph.Clément Bœsch2013-01-021-1/+1
| | | | | The flags are necessary for the auto inserted scaler (because the overlay filter needs an alpha channel for the overlay surface).
* fate: add missing bitexact flag to scale filterMichael Niedermayer2013-01-021-1/+1
| | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* fate: add sub2video test.Nicolas George2013-01-021-0/+8
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* fate: merge mapchan and options into ffmpeg.Nicolas George2013-01-011-0/+21
They were two very short files that cover ffmpeg-specific features.
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