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342 Commits

Author SHA1 Message Date
Martin Storsjö
8f24c12be7 ac3dec: Don't consume more data than the actual input packet size 
This was handled properly in the normal return case at the end
of the function, but not in this special case.

Returning a value larger than the input packet size can cause
problems for certain library users.

Returning the actual input buffer size unconditionally, since
it is not guaranteed that frame_size is set to a sensible
value at this point.

Cc: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-07-15 21:37:21 +03:00
Martin Storsjö
031be5b41b ac3dec: Consistently use AC3_BLOCK_SIZE and sizeof 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-07-13 19:06:52 +03:00
Martin Storsjö
68e57cde68 ac3dec: Increment channel pointers only once per channel 
If the channel mapping map multiple output channels to one
input channel, we should only increment the actual pointer once.

Cc: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-07-13 18:55:07 +03:00
Diego Biurrun
12e25ed284 avcodec: av_log_missing_feature(1) ---> avpriv_request_sample() 2013-03-13 21:20:12 +01:00
Anton Khirnov
759001c534 lavc decoders: work with refcounted frames. 2013-03-08 07:38:30 +01:00
Justin Ruggles
d7c450436f ac3dec: validate channel output mode against channel count 
Damaged frames can lead to a mismatch, which can cause a segfault
due to using an incorrect channel mapping.

CC:libav-stable@libav.org
 2013-02-23 16:59:39 -05:00
Justin Ruggles
55d2e12aef ac3: decode directly to the user-provided AVFrame 2013-02-12 12:21:21 -05:00
Mathias Rauen
04ea5491a8 ac3dec: fix non-optimal dithering of zero bit mantissas 
Use a noise range of -0.707 to 0.707 instead of -0.5 to 0.5

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
 2013-01-20 14:20:47 -05:00
Justin Ruggles
e034cc6c60 lavc: Move vector_fmul_window to AVFloatDSPContext 
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-01-16 10:45:45 +01:00
Diego Biurrun
511cf612ac miscellaneous typo fixes 2012-12-21 00:18:34 +01:00
Mans Rullgard
ec5da7aee2 ac3dec: decode directly into output buffers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-12-09 15:52:01 +00:00
Mans Rullgard
30b3916425 ac3dec: make downmix() take array of pointers to channel data 2012-12-09 15:52:01 +00:00
Mans Rullgard
b8f3ab8e6a ac3dec: output planar float only 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-12-09 15:52:01 +00:00
Anton Khirnov
594d4d5df3 lavc: add a wrapper for AVCodecContext.get_buffer(). 
It will be useful in the upcoming transition to refcounted AVFrames.
 2012-12-04 21:41:59 +01:00
Diego Biurrun
717addecad Use proper return values in case of missing features 2012-10-12 20:56:54 +02:00
Justin Ruggles
56b6a43056 ac3dec: ensure get_buffer() gets a buffer for the correct number of channels 
If there is an error during frame parsing, but AVCodecContext.channels was
changed and AC3DecodeContext.out_channels was set previously, the two may not
match.

Fixes CVE-2012-2802
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

CC: libav-stable@libav.org
 2012-10-01 00:10:59 -04:00
Mans Rullgard
97cb9236cf ac3: move ac3_downmix() from dsputil to ac3dsp 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-09-12 23:39:50 +01:00
Martin Storsjö
c7b610aa0b avopt: Explicitly store float/double option defaults in .dbl 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-04 23:13:51 +03:00
Anton Khirnov
36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +02:00
Diego Biurrun
a92be9b856 Replace memset(0) by zero initializations. 
Also remove one pointless zero initialization in rangecoder.c.
 2012-03-28 09:38:33 +02:00
Justin Ruggles
3798205a77 mov: set channel layout for AC-3 streams based on the 'dac3' atom info 
fixes Bug 225
 2012-02-22 20:07:02 -05:00
Martin Storsjö
9cf0841ef3 dsputil: Add ff_ prefix to the dsputil*_init* functions 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-02-15 22:06:34 +02:00
Michael Niedermayer
e6d9fa66f1 ac3dec: Move center and surround mix level tables to the parser. 
That way all mix levels as exported by avpriv_ac3_parse_header()
will have the same meaning.

Previously the 3-bit center mix level for E-AC-3 was used to index in a
4-entry table, leading to out-of-array reads.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
Signed-off-by: Alex Converse <alex.converse@gmail.com>
 2012-02-09 16:36:02 -08:00
Anton Khirnov
f326501a65 lavc: remove disabled FF_API_DRC_SCALE cruft. 2012-01-27 10:38:34 +01:00
Diego Biurrun
3dc99a18d4 cosmetics: drop some pointless parentheses 2012-01-07 22:13:07 +01:00
Chris Berov
541d083a40 ac3dec: cosmetics: pretty-printing 
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
 2011-12-04 16:15:48 -05:00
Justin Ruggles
0eea212943 Add avcodec_decode_audio4(). 
Deprecate avcodec_decode_audio3().
Implement audio support in avcodec_default_get_buffer().
Implement the new audio decoder API in all audio decoders.
 2011-12-02 17:40:40 -05:00
Dustin Brody
9abc98737f lavc: replace references to deprecated AVCodecContext.error_recognition to use AVCodecContext.err_recognition 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2011-10-22 14:49:55 +02:00
Anton Khirnov
6f89efeaa7 lavc: use avpriv_ prefix for ff_ac3_parse_header. 
It's used in lavf.
 2011-10-20 21:06:58 +02:00
Anton Khirnov
145f741e11 AVOptions: rename FF_OPT_TYPE_* => AV_OPT_TYPE_* 2011-10-12 16:51:16 +02:00
Mans Rullgard
633ddb8519 ac3dec: use get_sbits() instead of manually sign-extending 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-10-09 23:21:31 +01:00
Anton Khirnov
a4ea00d021 lavc/lavf: use unique private classes. 
This is needed by the new AVOptions API.
 2011-10-05 07:52:30 +02:00
Anton Khirnov
feedc0754b ac3dec: actually use drc_scale private option 2011-09-21 13:51:53 +02:00
Reimar Döffinger
459fe331e9 ac3dec: avoid pointless alloc and indirection for input_buffer 
Since we now always allocate it, it can simply be made part of the context
instead.
 2011-09-06 12:43:16 -04:00
Anton Khirnov
9b83919f44 ac3dec: add a drc_scale private option 
Deprecate corresponding AVCodecContext option.

This is the first test of decoder private options.
 2011-07-10 17:07:12 +02:00
Justin Ruggles
e6c52cee54 Replace usages of av_get_bits_per_sample_fmt() with av_get_bytes_per_sample(). 
av_get_bits_per_sample_fmt() is deprecated.
 2011-06-20 18:56:06 -04:00
Justin Ruggles
9aa8193a23 Add floating-point sample format support to the ac3, eac3, dca, aac, and vorbis 
decoders.

Based on patches by clsid2 in ffdshow-tryout.
 2011-05-18 17:27:06 -04:00
Justin Ruggles
4c64c8e95a ac3dec: fix processing of delta bit allocation information. 
The number of dba segments is the coded value + 1.
The coupling dba offset starts at the first coupling band, not at zero.
 2011-04-17 12:33:41 -04:00
Mans Rullgard
6d9f52b2cd ac3: move ff_ac3_bit_alloc_calc_bap to ac3dsp 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-29 19:31:45 +01:00
Justin Ruggles
991f3de1bb ac3enc: Add codec-specific options for writing AC-3 metadata. 2011-03-27 11:30:09 -04:00
Justin Ruggles
be18738801 Get audio_service_type for AC-3 based on bitstream mode in the AC-3 parser 
and decoder, and vice-versa for the AC-3 encoder.
 2011-03-25 16:59:00 -04:00
Reimar Döffinger
4c886d613d Detect byte-swapped AC-3 and support decoding it directly. 
This allows the AC-3 decoder to be used directly with RealMedia
decoders that unlike the libavformat one do not byte-swap automatically.
Since the new code is only used in case we would fail directly otherwise
there should be no risk for regressions.
 2011-03-22 15:36:47 -04:00
Justin Ruggles
40728b5169 cosmetics: indentation 2011-03-22 15:36:47 -04:00
Justin Ruggles
67fc8652b9 Always copy input data for AC3 decoder. 
Depending on error_recognition is not correct, low values do
certainly not mean it is ok to crash.

Based on a patch by Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2011-03-22 15:36:47 -04:00
Mans Rullgard
a45fbda994 Move ff_kbd_window_init() to a separate file 
This function is not tightly coupled to mdct, and it's in the way
of making a fixed-point mdct implementation.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 19:49:27 +00:00
Mans Rullgard
26f548bb59 fft: remove inline wrappers for function pointers 
This removes the rather pointless wrappers (one not even inline)
for calling the fft_calc and related function pointers.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 19:49:18 +00:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Justin Ruggles
c73d99e672 Separate format conversion DSP functions from DSPContext. 
This will be beneficial for use with the audio conversion API without
requiring it to depend on all of dsputil.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-02-02 02:44:53 +00:00
Justin Ruggles
80ba1ddb58 Remove unneeded add bias from 3 functions. 
DSPContext.vector_fmul_window()
DCADSPContext.lfe_fir()
SynthFilterContext.synth_filter_float()

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-31 20:28:42 +00:00
Justin Ruggles
b5ec638343 cosmetics: indentation and spacing 2011-01-28 00:21:46 +00:00