The correct point that seperates ISO and MAC language codes is 0x400
according to the current QT spec. Old QT specs did not list where this
seperation is but apparently only defined the meaning of the first 137.
It is my understanding that "Unless otherwise stated, all data in a
QuickTime movie is stored in big-endian byte ordering" [1] in MOV files.
I have a couple of thousand files, which technically are invalid because
their sound sample description element 4CC is 'lpcm' but its version is
0 - and "Version 0 supports only uncompressed audio in raw ('raw ') or
twos-complement ('twos') format" [2]
Because isom.c only contains a mapping for 4CC 'lpcm' to
AV_CODEC_ID_PCM_S16LE, these files have their audio decoded as LE when
it is actually BE.
This commit adds AV_CODEC_ID_PCM_S16BE as the first match for 4CC 'lpcm'.
[1]
https://developer.apple.com/library/mac/documentation/quicktime/QTFF/qtff.pdf
page 21
[2]
https://developer.apple.com/library/mac/documentation/quicktime/QTFF/qtff.pdf
page 178
Reviewed-by: Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
* commit 'c708b5403346255ea5adc776645616cc7c61f078':
timer: use mach_absolute_time as high resolution clock on darwin
Conflicts:
configure
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* cus/stable:
libzvbi-teletextdec: split dvb packet to slices
libzvbi-teletextdec: use av_dlog where possible
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
build: Use pkg-config for openjpeg
Conflicts:
configure
Not merged / merge just for metadata at request of carl
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '565e0c6d866ce08d4b06427456d3d1f4fd856e9c':
movenc: allow override of "writing application" tag
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Not guaranteed to be in nanosecond resolution. On iOS 7 the duration
of one tick is 125/3 ns which is still more than an order of magnitude
better then microseconds.
Replace decicycles with the neutral UNITS. Decicycles is strange but
tenths of a nanosecond and unspecific "deci"-ticks for mach_absolute_time
is just silly.
Based on the aarch64 asm. CPU cycle counts on cortex-a9 compared to
gcc 4.8.2:
before: 475 decicycles in get_cabac_noinline, 67106035 runs, 2829 skips
after: 393 decicycles in get_cabac_noinline, 67106474 runs, 2390 skips
Overall speedup is above 2%. Code generated by clang 3.4 is slower on
the same hardware and the relative change is a little larger.
Based on the x86 branchless get_cabac asm. get_cabac_noinline() gets
approximately 20% faster (no cycle counts available) compared to clang
from Xcode 5.1 beta5. More than 6% faster overall. A part of the overall
speedup might be explained by additional inlining of get_cabac().
Instead of using the demux function of libzvbi to split the packet to slices
(vbi lines), lets do it ourselves.
- eliminates the 1 frame delay between page input and output
- handles non-ascending line numbers more gracefully
- enables us to return error codes on some invalid packets instead of silently
ignoring them
Signed-off-by: Marton Balint <cus@passwd.hu>
The overread avoidance fix in cbddee1cca
broke the computation for the last row since it prevented the safe
reading from the height+1-th row.
CC: libav-stable@libav.org
* cigaes/master:
lavf/concatdec: reindent after last commit.
lavf/concatdec: more reliable test for absolute URLs.
lavf: add subfile protocol.
lavfi/af_atempo: clear references before returning error.
lavd/xv: take aspect ratio into account.
lavc/pthread: copy packet side data.
Merged-by: Michael Niedermayer <michaelni@gmx.at>
ff_make_absolute_url() recognizes the "://" pattern usual
in HTTP-like protocols, but consider relative URLs starting
with just the protocol name or using the comma syntax for
options.
