- 10 Nov, 2015 37 commits
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Michael Niedermayer authored
Also support disabling them as they seem to cause problems to some Users. They are also not allowed in IRT D-10 thus the default for mxf_d10 is not to write them This also decreases the filesize when no user comment are stored Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Ni Hui authored
this fixes the return code of avcodec_decode_video2 for gif decoding and the gif frame data buffer is skipped properly Reviewed-by:
Paul B Mahol <onemda@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Ni Hui authored
Reviewed-by:
Paul B Mahol <onemda@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Andreas Cadhalpun authored
A negative sample rate causes assertion failures in av_rescale_rnd. Reviewed-by:
Paul B Mahol <onemda@gmail.com> Signed-off-by:
Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Paul B Mahol authored
Remove loops, output is also more interesting. Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Hendrik Leppkes authored
* commit 'aeda1121': lavf: factor out freeing an AVStream Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '3efd71b4': avconv: set packet duration for CFR video streams Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'a0c71a57': lavf: initialize cur_dts to AV_NOPTS_VALUE for muxing Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'cc96018c': libopenh264enc: Set AVOption data type Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'fcc49924': vdpau: Remove a spurious CONFIG_H263_VDPAU_HWACCEL Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '563e6d86': segafilm: drop the "song and dance" for cinepak Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '1e791ee3': segafilm: set video and audio stream duration Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'c012c6f1': segafilm: implement seeking Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '2ec112f7': vf_pad: fix x, y option expression evaluation Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'e2854e73': avresample: Document avresample_open() a little better Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'f128b8e1': mov: detect cover art pictures by content Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '50d2a3b5': flashsv: Initialize the block array Not merged, blocks are already zeroed when appropriate. Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'de41b555': truemotion2: Fix the buffer check Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '4a326923': mimic: Always return on failure Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '452d659a': msnwc_tcp: Use the correct return values Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit 'f8d10511': cosmetics: msnwc_tcp: Reformat Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '4dfbc7a7': msnwc_tcp: Correctly report failure Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '60f50374': rpza: Check the blocks left before processing one Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '0b699920': lagarith: Correctly compute hash_shift Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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Hendrik Leppkes authored
* commit '1e7ff5ac': nut: Use the correct codec_tag when multiple are available Not merged since ffnutenc handles the codec_tag differently Merged-by:
Hendrik Leppkes <h.leppkes@gmail.com>
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James Almer authored
Fixes compilation of host tool aacps_fixed_tablegen. Reviewed-by:
Michael Niedermayer <michael@niedermayer.cc> Signed-off-by:
James Almer <jamrial@gmail.com>
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Michael Niedermayer authored
This avoid double calling functions Found-by:
Muhammad Faiz <mfcc64@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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wm4 authored
Fixes apparent mmal_port_disable() freezes in ffmmal_stop_decoder() when calling ffmmal_decode() with flush semantics a large number of times in a row.
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Michael Niedermayer authored
Found-by:
Hendrik Leppkes <h.leppkes@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Timothy Gu authored
Allows one to do: ffmpeg -s 1920x1080 -i blah.v210 ... ffmpeg -s 1920x1080 -f v210x -i blah.yuv10 ... Fixes #1869. Reviewed-by:
James Almer <jamrial@gmail.com> Reviewed-by:
Kieran Kunhya <kierank@obe.tv>
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Michael Niedermayer authored
The CMP variable seems to have been inherited from fate-api-seek which set it to null the mxf reference needed a change due to c7e14a27Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Andreas Cadhalpun authored
This is similar to commit ec38a1ba for aac_decode_frame_int. Signed-off-by:
Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> Reviewed-by:
Michael Niedermayer <michael@niedermayer.cc>
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Andreas Cadhalpun authored
This fixes a SIGFPE crash in the aac_fixed decoder. Signed-off-by:
Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> Reviewed-by:
Rostislav Pehlivanov <atomnuker@gmail.com>
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Ganesh Ajjanagadde authored
Somewhat ironic that this "safe" interface is actually being used unsafely here. This fixes the usage preventing potential null pointer dereference, where the old code was doubly broken: ctime can return NULL, and ctime can return an arbitrarily long buffer. Reviewed-by:
Mark Harris <mark.hsj@gmail.com> Reviewed-by:
Michael Niedermayer <michael@niedermayer.cc> Signed-off-by:
Ganesh Ajjanagadde <gajjanagadde@gmail.com>
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- 09 Nov, 2015 3 commits
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Ganesh Ajjanagadde authored
This may be a slightly surprising optimization, but is actually based on an understanding of how math libraries compute trigonometric functions. Explanation is given here so that future development uses libm more effectively across the codebase. All libm's essentially compute transcendental functions via some kind of polynomial approximation, be it Taylor-Maclaurin or Chebyshev. Correction terms are added via polynomial correction factors when needed to squeeze out the last bits of accuracy. Lookup tables are also inserted strategically. In the case of trigonometric functions, periodicity is exploited via first doing a range reduction to an interval around zero, and then using some polynomial approximation. This range reduction is the most natural way of doing things - else one would need polynomials for ranges in different periods which makes no sense whatsoever. To avoid the need for the range reduction, it is helpful to feed in arguments as close to the origin as possible for the trigonometric functions. In fact, this also makes sense from an accuracy point of view: IEEE floating point has far more resolution for small numbers than big ones. This patch does this for the Blackman-Nuttall filter, and yields a non-negligible speedup. Sample benchmark (x86-64, Haswell, GNU/Linux) test: fate-swr-resample-dblp-2626-44100 old: 18893514 decicycles in build_filter (loop 1000), 256 runs, 0 skips 18599863 decicycles in build_filter (loop 1000), 512 runs, 0 skips 18445574 decicycles in build_filter (loop 1000), 1000 runs, 24 skips new: 16290697 decicycles in build_filter (loop 1000), 256 runs, 0 skips 16267172 decicycles in build_filter (loop 1000), 512 runs, 0 skips 16251105 decicycles in build_filter (loop 1000), 1000 runs, 24 skips Reviewed-by:
Michael Niedermayer <michael@niedermayer.cc> Signed-off-by:
Ganesh Ajjanagadde <gajjanagadde@gmail.com>
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Ganesh Ajjanagadde authored
When upsampling, factor is set to 1 and sines need to be evaluated only once for each phase, and the complexity should not depend on the number of filter taps. This does the desired precomputation, yielding significant speedups. Hard guarantees on the gain are not possible, but gains themselves are obvious and are illustrated below. Sample benchmark (x86-64, Haswell, GNU/Linux) test: fate-swr-resample-dblp-2626-44100 old: 29161085 decicycles in build_filter (loop 1000), 256 runs, 0 skips 28821467 decicycles in build_filter (loop 1000), 512 runs, 0 skips 28668201 decicycles in build_filter (loop 1000), 1000 runs, 24 skips new: 14351936 decicycles in build_filter (loop 1000), 256 runs, 0 skips 14306652 decicycles in build_filter (loop 1000), 512 runs, 0 skips 14299923 decicycles in build_filter (loop 1000), 1000 runs, 24 skips Note that this does not statically allocate the sin lookup table. This may be done for the default 1024 phases, yielding a 512*8 = 4kB array which should be small enough. This should yield a small improvement. Nevertheless, this is separate from this patch, is more ambiguous due to the binary increase, and requires a lut to be generated offline. Reviewed-by:
Michael Niedermayer <michael@niedermayer.cc> Signed-off-by:
Ganesh Ajjanagadde <gajjanagadde@gmail.com>
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Simon Thelen authored
Signed-off-by:
Simon Thelen <ffmpeg-dev@c-14.de> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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