525ac37fd2
Optimize 1D DCT transform used in MP{1,2,3}. Makes also this function suitable
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for being moved to the shared DCT framework in the future.
Originally committed as revision 23514 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-07 11:43:12 +00:00
40914d97cc
1.0 and the resulting exactly representable value must be marked as float as well,
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gcc is hopelessly trash.
Originally committed as revision 23119 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-13 18:06:44 +00:00
0628f3e8cf
Cast constants to float to avoid gcc converting to and from
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float<->double in every operation.
Originally committed as revision 23118 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-13 17:58:17 +00:00
bfbdc58e52
Fix compilation with low precission mpeg audio decoding.
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Originally committed as revision 23107 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-13 10:04:31 +00:00
3b7117b73a
Do the same sign flip optimization to the low freq decoder.
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as with the high freq 10-20 cycles faster
Originally committed as revision 23099 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-11 21:31:54 +00:00
4b070a7a61
Factorize READ_FLIP_SIGN() optimization out
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Originally committed as revision 23098 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-11 21:20:33 +00:00
0c0d88aed5
Optimize decoding high freqs.
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this is 10-20cpu cycles faster on duron (whole is about 50-60 cpu cylses)
I wonder why gcc isnt doing this on its own ...
Originally committed as revision 23097 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-11 21:10:55 +00:00
fd9451c68f
Make lsf_sf_expand() 4 times faster.
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Originally committed as revision 23096 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-11 20:33:48 +00:00
b91d46614d
float based mp1/mp2/mp3 decoders.
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Originally committed as revision 23095 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-11 19:52:42 +00:00
86433cc6f5
Remove unused FRAC_RND() macro from mpegaudiodec.c.
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Originally committed as revision 23086 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-11 14:49:48 +00:00
ba87f0801d
Remove explicit filename from Doxygen @file commands.
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Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-20 14:45:34 +00:00
72415b2adb
Define AVMediaType enum, and use it instead of enum CodecType, which
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is deprecated and will be dropped at the next major bump.
Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-30 23:30:55 +00:00
da0ac0ee64
Make some functions static
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These functions are not used outside their respective files, and they
lack a prototype in a header.
Originally committed as revision 22259 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-06 22:36:41 +00:00
84dc2d8afa
Remove DECLARE_ALIGNED_{8,16} macros
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These macros are redundant. All uses are replaced with the generic
DECLARE_ALIGNED macro instead.
Originally committed as revision 22233 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-06 14:24:59 +00:00
c67278098d
Move array specifiers outside DECLARE_ALIGNED() invocations
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Originally committed as revision 21377 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-01-22 03:25:11 +00:00
6e44ba1550
Use get_bits_left() instead of size_in_bits - get_bits_count().
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Originally committed as revision 20543 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-11-16 17:42:43 +00:00
c902340599
Reduce stack memory allocation in MP3 decoder
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Originally committed as revision 20451 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-11-04 23:33:08 +00:00
eadaa00c6f
Add support for hardcoding the mpegaudiodec tables.
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Reduces .bss size by about 194 kB.
Originally committed as revision 20400 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-10-28 18:42:52 +00:00
9adcccde0c
mpegaudiodec, mpc and qdm2 all use the same mpa_synth window, so make
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them use the same variable/global storage.
Saves 4 kB in .bss.
Originally committed as revision 20314 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-10-19 17:21:02 +00:00
a57afd2943
Partially revert r20233, exp2f is not available on some BSDs, DOS and AVR32.
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Originally committed as revision 20240 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-10-15 17:10:07 +00:00
686884da9d
Use cbrtf and exp2f instead of pow to calculate tables for MPEG audio decoding.
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This hopefully is fast enough so that it is reasonable to use the same formula
directly instead of the table for CONFIG_SMALL.
Originally committed as revision 20233 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-10-15 06:59:23 +00:00
45a014d75e
Set data_size to 0 to avoid having it uninitialized.
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based on 31_mp3_outlen.patch by chrome.
Originally committed as revision 19988 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-23 11:44:30 +00:00
f7304e99d4
Check data_size in decode_frame_mp3on4().
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Originally committed as revision 19987 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-23 11:33:44 +00:00
0d31833d04
check data_size in decode_frame()
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Originally committed as revision 19986 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-23 11:29:38 +00:00
83614f2df9
Reduce pointless verbosity after seeks in the MP3 decoder.
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Originally committed as revision 19759 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-04 19:04:12 +00:00
822d0a6e0c
Drop code that attempts to decode frames that are prefixed by junk.
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Too often it ends up decoding random data into noise without detecting
it (for example after seeking of some MP3 data with oddly often occurring
startcode emulation).
Fixes issue1154.
Originally committed as revision 19302 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-06-30 03:57:27 +00:00
1e24f1b25d
mpegaudio: enclose SUM8() macro args in parens when used
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Originally committed as revision 18746 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-05 18:44:13 +00:00
bf030c887f
mpegaudio: avoid unnecessary copy in high-precision mode
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Originally committed as revision 18745 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-05 18:44:10 +00:00
adb206c238
mpegaudio: use av_clip()
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Originally committed as revision 18744 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-05 18:44:07 +00:00
e2fa5cf4c9
Do not scan for MP3 header after the given buffer and return skipped
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bytes along with consumed bytes on successful decoding.
patch by Zdenek Kabelac, zdenek.kabelac gmail com
Originally committed as revision 18736 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-04 14:23:48 +00:00
b52b6ae489
Remove unused variable from decode_init() found by CSA.
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Originally committed as revision 18550 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-04-17 13:57:22 +00:00
9106a698e7
Rename bitstream.h to get_bits.h.
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Originally committed as revision 18494 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-04-13 16:20:26 +00:00
7a00bbad21
Implement avcodec_decode_video2(), _audio3() and _subtitle2() which takes an
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AVPacket argument rather than a const uint8_t *buf + int buf_size. This allows
passing of packet-specific flags from demuxer to decoder, such as the keyframe
flag, which appears necessary to playback corePNG P-frames.
Patch by Thilo Borgmann thilo.borgmann googlemail com, see also the thread
"Google Summer of Code participation" on the mailinglist.
Originally committed as revision 18351 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-04-07 15:59:50 +00:00
5ef251e504
Add missing av_cold in static init/close functions.
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Patch by Daniel Verkamp daniel at drv dot nu.
Originally committed as revision 17526 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-02-22 13:48:55 +00:00
bad5537e2c
Use full internal pathname in doxygen @file directives.
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Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.
Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-02-01 02:00:19 +00:00
cf92cec7d8
Avoid allocating MPADecodeContext on stack.
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Instead move relevant fields into MPADecodeHeader and use it
where appropriate.
Originally committed as revision 16728 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-23 12:09:32 +00:00
406792e7b0
cosmetics: Remove pointless period after copyright statement non-sentences.
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Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-19 15:46:40 +00:00
49cdad8d78
simplify: group all the AUDIO_NONSHORT parameters in the same place
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Originally committed as revision 16602 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-14 21:41:05 +00:00
0f6a659ddf
Replace #ifdef CONFIG_ preprocessor check by #if CONFIG_.
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CONFIG_ changed semantics and is always defined now.
Originally committed as revision 16598 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-14 07:57:12 +00:00
ad1eebe360
Use CONFIG_MPEGAUDIO_HP directly instead of USE_HIGHPRECISION indirection.
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Originally committed as revision 16594 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-14 00:48:17 +00:00
b250f9c66d
Change semantic of CONFIG_*, HAVE_* and ARCH_*.
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They are now always defined to either 0 or 1.
Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-13 23:44:16 +00:00
cb595b7f02
Add dummy mp1_decoder to complement the existing dummy mp2/mp3 decoders.
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Originally committed as revision 16581 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-13 19:32:08 +00:00
11c23b64ac
Revert r16257:
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Include "libavutil/common.h" where we use llrint() in case ffmpeg's
own llrint() is to be used.
Originally committed as revision 16282 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-22 22:39:55 +00:00
1af34f094e
Include "libavutil/common.h" where we use llrint() in case ffmpeg's
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own llrint() is to be used.
Originally committed as revision 16257 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-21 21:53:42 +00:00
4deaa94639
Add shift argument to MULL() macro
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This replaces use of FRAC_BITS in the MULL() definition with a third
argument specifying the shift amount. All uses of this macro are
updated to pass FRAC_BITS as third argument.
Originally committed as revision 15921 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-24 09:28:55 +00:00
37d3e0667a
uses FF_ARRAY_ELEMS() where appropriate
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Originally committed as revision 15662 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-10-21 21:40:24 +00:00
1d4113d053
Only print "invalid new backstep" when it is really invalid.
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Fixes issue541.
Originally committed as revision 15339 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-16 01:49:32 +00:00
bf3a971c12
Make decoder more robust by default against broken encoders.
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Fixes issue540.
Originally committed as revision 15336 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-16 00:31:32 +00:00
047599a4ba
Rename error_resilience to error_recognition.
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Originally committed as revision 15270 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-08 18:18:49 +00:00
969c163f1f
Remove debuging junk that probably hasnt been used by anyone since years.
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Originally committed as revision 15133 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-31 20:26:28 +00:00
Vitor Sessak
Michael Niedermayer
Diego Biurrun
Stefano Sabatini
Måns Rullgård
Ronald S. Bultje
Reimar Döffinger
Zdenek Kabelac
Thilo Borgmann
Daniel Verkamp
Andreas Öman
Aurelien Jacobs