- 18 Jul, 2014 33 commits
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Michael Niedermayer authored
* commit '9e0b2991': x86: dnxhdenc: Eliminate some unnecessary ifdefs Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit 'b4edbe9a': libgsm: Split decoder and encoder Conflicts: libavcodec/libgsmenc.c Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '8b0dd494': idctdsp: prettyprinting cosmetics Conflicts: libavcodec/idctdsp.c libavcodec/ppc/idctdsp.c libavcodec/x86/idctdsp_init.c Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit 'b4987f72': idct: Convert IDCT permutation #defines to an enum Conflicts: libavcodec/idctdsp.c libavcodec/x86/cavsdsp.c Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit 'c0de9159': avdevice: Give names to anonymously typedeffed structs Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '24af1aa0': fft: Convert FFT/MDCT permutation type #defines to enums Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '746ad4e0': dct-test: Improve CPU flags struct member name Conflicts: libavcodec/dct-test.c Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit 'cb44b21d': dct-test: Move cpu_flags variable out of global scope Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Peter B authored
Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Carl Eugen Hoyos authored
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Diego Biurrun authored
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Nidhi Makhijani authored
Signed-off-by:
Diego Biurrun <diego@biurrun.de>
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Diego Biurrun authored
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Diego Biurrun authored
Also rename the enum values to be consistent with other DCT permutations.
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Diego Biurrun authored
Anonymous structs can cause trouble in header files, so try to avoid them altogether as a matter of good style.
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Diego Biurrun authored
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Diego Biurrun authored
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Diego Biurrun authored
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Andrey Utkin authored
Reviewed-by:
Stefano Sabatini <stefasab@gmail.com> Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Timothy Gu authored
Signed-off-by:
Timothy Gu <timothygu99@gmail.com> Reviewed-by:
Paul B Mahol <onemda@gmail.com> Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '7e18a727': arm: cosmetics: Consistently use lowercase for shift operators Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit 'fe67f3fb': arm: cosmetics: Fix a misaligned asm operand Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Martin Storsjö authored
Signed-off-by:
Martin Storsjö <martin@martin.st>
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Martin Storsjö authored
Signed-off-by:
Martin Storsjö <martin@martin.st>
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James Almer authored
Signed-off-by:
James Almer <jamrial@gmail.com> Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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James Almer authored
Signed-off-by:
James Almer <jamrial@gmail.com> Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Timothy Gu authored
Signed-off-by:
Timothy Gu <timothygu99@gmail.com> Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Timothy Gu authored
Signed-off-by:
Timothy Gu <timothygu99@gmail.com> Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '5a272190': armv6: Accelerate butterflies_float See: 57641410Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '5edad2c4': armv6: Accelerate vector_fmul_window See: 649c6661Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '87552d54': armv6: Accelerate ff_fft_calc for general case (nbits != 4) Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '5c22e8e4': armv6: Accelerate ff_imdct_half for general case (mdct_bits != 6) See: 42c1cc35Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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- 17 Jul, 2014 7 commits
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Ben Avison authored
I benchmarked the result by measuring the number of gperftools samples that hit anywhere in the AAC decoder (starting from aac_decode_frame()) or specifically in butterflies_float_c() / ff_butterflies_float_vfp() for the same sample AAC stream: Before After Mean StdDev Mean StdDev Confidence Change Audio decode 1542.8 43.7 1470.5 41.5 100.0% +4.9% butterflies_float 130.0 11.9 70.2 12.1 100.0% +85.2% Signed-off-by:
Martin Storsjö <martin@martin.st>
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Ben Avison authored
I benchmarked the result by measuring the number of gperftools samples that hit anywhere in the AAC decoder (starting from aac_decode_frame()) or specifically in vector_fmul_window_c() / ff_vector_fmul_window_vfp() for the same sample AAC stream: Before After Mean StdDev Mean StdDev Confidence Change Audio decode 1598.2 47.4 1529.2 25.4 100.0% +4.5% vector_fmul_window 244.0 22.1 188.9 22.3 100.0% +29.2% Signed-off-by:
Martin Storsjö <martin@martin.st>
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Ben Avison authored
The previous implementation targeted DTS Coherent Acoustics, which only requires nbits == 4 (fft16()). This case was (and still is) linked directly rather than being indirected through ff_fft_calc_vfp(), but now the full range from radix-4 up to radix-65536 is available. This benefits other codecs such as AAC and AC3. The implementaion is based upon the C version, with each routine larger than radix-16 calling a hierarchy of smaller FFT functions, then performing a post-processing pass. This pass benefits a lot from loop unrolling to counter the long pipelines in the VFP. A relaxed calling standard also reduces the overhead of the call hierarchy, and avoiding the excessive inlining performed by GCC probably helps with I-cache utilisation too. I benchmarked the result by measuring the number of gperftools samples that hit anywhere in the AAC decoder (starting from aac_decode_frame()) or specifically in the FFT routines (fft4() to fft512() and pass()) for the same sample AAC stream: Before After Mean StdDev Mean StdDev Confidence Change Audio decode 2245.5 53.1 1599.6 43.8 100.0% +40.4% FFT routines 940.6 22.0 348.1 20.8 100.0% +170.2% Signed-off-by:
Martin Storsjö <martin@martin.st>
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Ben Avison authored
The previous implementation targeted DTS Coherent Acoustics, which only requires mdct_bits == 6. This relatively small size lent itself to unrolling the loops a small number of times, and encoding offsets calculated at assembly time within the load/store instructions of each iteration. In the more general case (codecs such as AAC and AC3) much larger arrays are used - mdct_bits == [8, 9, 11]. The old method does not scale for these cases, so more integer registers are used with non-unrolled versions of the loops (and with some stack spillage). The postrotation filter loop is still unrolled by a factor of 2 to permit the double-buffering of some VFP registers to facilitate overlap of neighbouring iterations. I benchmarked the result by measuring the number of gperftools samples that hit anywhere in the AAC decoder (starting from aac_decode_frame()) or specifically in ff_imdct_half_c / ff_imdct_half_vfp, for the same example AAC stream: Before After Mean StdDev Mean StdDev Confidence Change aac_decode_frame 2368.1 35.8 2117.2 35.3 100.0% +11.8% ff_imdct_half_* 457.5 22.4 251.2 16.2 100.0% +82.1% Signed-off-by:
Martin Storsjö <martin@martin.st>
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Michael Niedermayer authored
These where removed by libav in See: git show -C 2d604443 diff --git a/libavcodec/dsputil.c b/libavcodec/me_cmp.c similarity index 98% rename from libavcodec/dsputil.c rename to libavcodec/me_cmp.c index ba71a99..9fcc937 100644 --- a/libavcodec/dsputil.c +++ b/libavcodec/me_cmp.c @@ -1,8 +1,4 @@ /* - * DSP utils - * Copyright (c) 2000, 2001 Fabrice Bellard - * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> - * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
* commit '2d604443': dsputil: Split motion estimation compare bits off into their own context Conflicts: configure libavcodec/Makefile libavcodec/arm/Makefile libavcodec/dvenc.c libavcodec/error_resilience.c libavcodec/h264.h libavcodec/h264_slice.c libavcodec/me_cmp.c libavcodec/me_cmp.h libavcodec/motion_est.c libavcodec/motion_est_template.c libavcodec/mpeg4videoenc.c libavcodec/mpegvideo.c libavcodec/mpegvideo_enc.c libavcodec/x86/Makefile libavcodec/x86/me_cmp_init.c Merged-by:
Michael Niedermayer <michaelni@gmx.at>
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