Justin Ruggles
58ce349f0a
move the decode context and some macro constants to a new file, ac3dec.h
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Originally committed as revision 13697 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
30f71adc46
move mix level tables from parser to decoder. have parser read bitstream value instead of using an index to a table in the decoder.
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Originally committed as revision 13696 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
caf0fbc889
add more gain levels and adjust mix level tables accordingly.
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Originally committed as revision 13695 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
687671f03b
pass bap table to ff_ac3_bit_alloc_calc_bap()
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Originally committed as revision 13694 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
4921bbbae5
cosmetics: indent
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Originally committed as revision 13692 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
aa5d6be8df
skip unsupported frame types and substream id's
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Originally committed as revision 13691 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
be5f17b96b
read frame type from header info into decode context
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Originally committed as revision 13690 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
3596aa6fe6
get substreamid from ac3 parser
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Originally committed as revision 13689 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
6730e9f300
get the number of blocks from the ac3 parser and use in the ac3 decoder.
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Originally committed as revision 13688 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
7af26d14ac
return error on frame sync error
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Originally committed as revision 13654 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
fb2b88a816
cosmetics: add a comment, remove a comment
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Originally committed as revision 13590 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
9b57545934
simplify
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Originally committed as revision 13589 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
6e74513a48
set lfe params at frame init instead of in every block
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Originally committed as revision 13588 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
b85a15fe73
only calculate number of exponent groups when exponents are not reused.
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Originally committed as revision 13587 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
aa148649a4
cosmetics: remove unneeded braces
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Originally committed as revision 13586 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
7e13b31c19
10l: cosmetics
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Originally committed as revision 13585 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
e25973a1fd
new dba values requires running last 2 bit allocation stages
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Originally committed as revision 13584 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
ff5d419e2f
get_transform_coeffs() never returns an error, so make the function and its children return void.
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Originally committed as revision 13582 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
fbe52e4188
use enum value for CRC error
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Originally committed as revision 13580 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
c78c6d6c58
move header error logging to after CRC check
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Originally committed as revision 13579 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
bd98e9e230
zero the upper frequencies of the correct coefficients
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Originally committed as revision 13452 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
eccba2bc4b
safer solution for setting audio parameters
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Originally committed as revision 13402 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
cf03a8173a
set audio parameters if frame header is ok, even if crc fails
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Originally committed as revision 13399 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
3336110acf
cosmetics: indent
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Originally committed as revision 13398 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
ecfe94b294
add error concealment
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Originally committed as revision 13397 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
93a2c8c14f
cosmetics: indent
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Originally committed as revision 13385 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
43ad93a4f1
10l: fix error in commit r13382
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Originally committed as revision 13384 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
82a591d8d1
add checks for missing information in the first block
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Originally committed as revision 13382 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
3af9131398
add check for invalid channel mode when coupling is used
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Originally committed as revision 13381 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Diego Biurrun
245976da2a
Use full path for #includes from another directory.
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Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Stefano Sabatini
162d4fc99d
Add long names to AVCodec declarations.
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patch by Stefano Sabatini, stefano.sabatini-lala poste it
Originally committed as revision 13009 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Bartlomiej Wolowiec
55736cfbd2
change ff_ac3_parse_header() to take a GetBitContext instead of const char*
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Originally committed as revision 12922 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Bartlomiej Wolowiec
79b25a27b8
change name from stream type to frame type in AC3 code
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Originally committed as revision 12623 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
509fdb0b7e
only allocate context input buffer if AVCodecContext.error_reslience is greater than 0.
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Originally committed as revision 12600 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
984ff38a2b
cosmetics: indentation after last commit
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Originally committed as revision 12594 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
c33a196716
additional protection from segmentation faults and memory access errors by
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copying the input buffer to a local context buffer which is large enough to
hold the largest possible AC3 frame.
Originally committed as revision 12593 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Bartlomiej Wolowiec
4e6eeaf019
using stream type in eac3 parser
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Originally committed as revision 12570 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Zuxy Meng
98a6fff98c
Apply 'cold' attribute to init/uninit functions in libavcodec
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Originally committed as revision 12525 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
98f6dfa653
make input buffer const, as it should be. fixes a warning.
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Originally committed as revision 12418 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
38dae9c3a6
downmix before imdct unless different size transforms are used. about 20%
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faster 5.1-to-stereo downmixing.
Originally committed as revision 12397 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
d8870f120e
use scale factor instead of sum for downmix level adjustment. avoids division
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inside downmix loop. 7% faster 5.1-to-stereo downmixing.
Originally committed as revision 12287 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
9d10e6e6c0
pre-calculate downmix coefficient sums. 2% faster 5.1-to-stereo downmixing.
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Originally committed as revision 12286 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
a4de6dd2c1
Use 24-bit fixed-point transform coefficients until just before MDCT. This
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gives 7% faster decoding on average.
Originally committed as revision 12284 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
3ed546fe52
Add variable alpha and size of half window for Kaiser-Bessel Derived window
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generation. Hard code Bessel I0 approximation iterations to 50.
See thread for discussion:
[FFmpeg-devel] [PATCH] Move Kaiser-Bessel Derived window to mdct.c
Started on the 2008/01/10
Originally committed as revision 11520 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
4eb7a735cb
Make the Kaiser-Bessel window generator a common function
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Patch by Robert Swain, robert d swain a gmail d com
Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
f34b221bd2
used defined name for testing error resilience level
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Originally committed as revision 11478 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
f0b3a7ba12
split out init of downmix coeffs into a separate function that can be called
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only when needed
Originally committed as revision 11441 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
82a6c4811a
remove unneeded variable from AC3DecodeContext
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Originally committed as revision 11439 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
4bc829bb8f
make sure that the last coupling band stops at the end of the coupling range
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Originally committed as revision 11438 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Justin Ruggles
b02fbf7536
fix phase flag processing for the case when coupling coordinates are reused
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for the right channel, but new for the left channel
Originally committed as revision 11436 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago