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360 Commits

Author SHA1 Message Date
Tim Walker
9cd4bc4176 ac3dec: set AV_FRAME_DATA_DOWNMIX_INFO side data. 2014-02-15 22:25:00 +01:00
John Stebbins
23d461fe87 ac3dec: Allow asymmetric application of DRC when drc_scale > 1 
Amplification of quiet sounds is enhanced.
Inspired by gbooker's A52Decoder.
 2014-01-29 23:26:25 +01:00
Tim Walker
ade75fb811 (e)ac3: clip surround mix level indexes. 
Values 0-2 are reserved, 3 (-1.5dB) should be used instead.
 2014-01-19 19:12:52 +01:00
Tim Walker
c229f571fd (e)ac3: parse and store the Lt/Rt and LFE mix levels. 2014-01-19 19:12:42 +01:00
Tim Walker
1f604f96ea ac3: set default matrix encoding modes in parse_frame_header. 
Deduplicates some code.
 2014-01-19 19:12:33 +01:00
Tim Walker
7840c40445 (e)ac3dec: set AV_FRAME_DATA_MATRIXENCODING side data. 2014-01-05 16:41:56 +01:00
Tim Walker
13345fc1f8 (e)ac3: parse and store the Dolby Surround, Surround EX and Headphone mode flags. 2014-01-05 16:41:56 +01:00
John Stebbins
c9ca220ef2 ac3dec: make drc_scale exponentially 
The a52 spec suggests that "partial compression" should scale the
drc value in this manner.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-12-09 08:54:42 +01:00
Tim Walker
48b24bd2d2 ac3dec: Fix out-of-array read 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2013-11-23 21:36:49 +01:00
Tim Walker
d4df02131b ac3dec: Remove write-only channel_layout field from AC3DecodeContext 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2013-11-22 23:27:34 +01:00
Tim Walker
b532854622 ac3: implement request_channel_layout. 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2013-11-22 23:27:33 +01:00
Tim Walker
ffb0af7f17 ac3dec: simplify an expression 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2013-11-19 18:52:17 +01:00
Michael Niedermayer
6c82c87dbb ac3dec: fix outptr increment. 
Fixes corrupt data errors when downmixing in the AC-3 decoder.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

CC:libav-stable@libav.org
 2013-10-28 08:33:21 -04:00
Anton Khirnov
23a211cbba lavc: change all decoders to behave consistently with AV_EF_CRCCHECK. 
Just crccheck prints a warning, crccheck+explode returns an error.

Also document this behavior.
 2013-10-28 07:22:18 +01:00
Diego Biurrun
b2bed9325d cosmetics: Group .name and .long_name together in codec/format declarations 2013-10-03 23:32:01 +02:00
Luca Barbato
b1f9cdc37f ac3: Return proper error codes 2013-08-27 16:19:12 +02:00
Luca Barbato
818d1f1a3e ac3: Clean up the error paths 2013-08-27 16:19:12 +02:00
Christophe Gisquet
b6293e2798 fmtconvert: Explicitly use int32_t instead of int 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-07-17 11:02:47 +03:00
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