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34 Commits

Author SHA1 Message Date
James Almer
4c35bb53f9 avcodec/ac3_parser: improve false positive detection when parsing sync frames 
A two byte sync word is not enough to ensure we got a real syncframe, nor are
all the range checks we do in the first seven bytes. Do therefore an integrity
check for the sync frame in order to prevent the parser from filling avctx with
bogus information.

Signed-off-by: James Almer <jamrial@gmail.com>
 2022-10-26 10:18:33 -03:00
James Almer
b5abf6fdfc avcodec/aac_ac3_parser: don't fill stream info in the sync function 
Have it only find frame boundaries. The stream props will then be filled once
we have an assembled frame.

Signed-off-by: James Almer <jamrial@gmail.com>
 2022-10-26 10:18:33 -03:00
Alexander Strasser
ecd71916d1 lavc/aac_ac3_parser: fix potential overflow when averaging bitrate 
The new code is analog to how it's done in our mpegaudio parser.

Acked-by: Jun Zhao <barryjzhao@tencent.com>
Signed-off-by: Alexander Strasser <eclipse7@gmx.net>
 2020-08-12 17:35:38 +02:00
Jun Zhao
60d79b1df9 lavc/aac_ac3_parser: improve the raw AAC file bit rate calculation 
Now we just use one ADTS raw frame to calculate the bit rate, it's
lead to a larger error when get the duration from bit rate, the
improvement cumulate Nth ADTS frames to get the average bit rate.

e,g used the command get the duration like:
ffprobe -show_entries format=duration -i fate-suite/aac/foo.aac

before this improvement dump the duration=2.173935
after this improvement  dump the duration=1.979267

in fact, the real duration can be get by command like:
ffmpeg -i fate-suite/aac/foo.aac -f null /dev/null with time=00:00:01.97

Also update the fate-adtstoasc_ticket3715.

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
 2020-06-26 09:53:36 +08:00
Michael Niedermayer
f0ee0341b0 Merge commit '6258d362b82934a2c27557e0984aed372d98091a' 
* commit '6258d362b82934a2c27557e0984aed372d98091a':
  ac3: Do not clash with normal AVERROR

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-28 12:09:41 +02:00
Luca Barbato
6258d362b8 ac3: Do not clash with normal AVERROR 
The parsing function return AVERROR and AAC_AC3_PARSE_ERROR values,
make sure they are not misunderstood.
 2013-08-27 16:19:12 +02:00
Michael Niedermayer
7a72695c05 Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85' 
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85':
  Replace all CODEC_ID_* with AV_CODEC_ID_*
  lavc: add AV prefix to codec ids.

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	doc/examples/muxing.c
	ffmpeg.c
	ffprobe.c
	ffserver.c
	libavcodec/8svx.c
	libavcodec/avcodec.h
	libavcodec/dnxhd_parser.c
	libavcodec/dvdsubdec.c
	libavcodec/error_resilience.c
	libavcodec/h263dec.c
	libavcodec/libvorbisenc.c
	libavcodec/mjpeg_parser.c
	libavcodec/mjpegenc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/pcm.c
	libavcodec/r210dec.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/version.h
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavformat/asfdec.c
	libavformat/asfenc.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/caf.c
	libavformat/electronicarts.c
	libavformat/flacdec.c
	libavformat/flvdec.c
	libavformat/flvenc.c
	libavformat/framecrcenc.c
	libavformat/img2.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/ipmovie.c
	libavformat/isom.c
	libavformat/matroska.c
	libavformat/matroskadec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/movenc.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegts.c
	libavformat/mxf.c
	libavformat/mxfdec.c
	libavformat/mxfenc.c
	libavformat/nsvdec.c
	libavformat/nut.c
	libavformat/oggenc.c
	libavformat/pmpdec.c
	libavformat/rawdec.c
	libavformat/rawenc.c
	libavformat/riff.c
	libavformat/sdp.c
	libavformat/utils.c
	libavformat/vocenc.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-08-07 22:45:46 +02:00
Anton Khirnov
36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +02:00
Michael Niedermayer
022f8d27dd Merge remote-tracking branch 'qatar/master' 
* qatar/master:
  swscale: Readd #define _SVID_SOURCE
  Fix av_get_channel_layout_string() for positions >31
  configure: Store vda lib flags in extralibs instead of ldflags
  Make channel layout masks unsigned
  dca: ARMv6 optimised decode_blockcode()
  nullenc: drop AVFMT_RAWPICTURE from the flags
  frame-mt: return consumed packet size in ff_thread_decode_frame
  aacdec: add more fate tests covering SBR and PS
  MK(BE)TAG: avoid undefined shifts

Conflicts:
	configure
	libavcodec/arm/dca.h
	libavcodec/dca.c
	libavcodec/mlp_parser.c
	libavcodec/version.h
	libavfilter/asrc_anullsrc.c
	libavfilter/avfilter.c
	libavfilter/avfilter.h
	libavfilter/defaults.c
	libavutil/audioconvert.c
	libavutil/avutil.h
	libswscale/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2011-11-26 01:12:08 +01:00
Mans Rullgard
cc276c85d1 Make channel layout masks unsigned 
It makes more sense for a bit mask to use an unsigned type.
The change should be source and binary compatible on all
supported systems, hence micro version bump.

Fixes a few invalid shifts.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-11-25 13:19:54 +00:00
Michael Niedermayer
27ef7b1bcd Merge remote-tracking branch 'newdev/master' 
* newdev/master:
  mov: set audio service type for AC-3 from bitstream mode in the 'dac3' atom.
  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.
  Use audio_service_type to set stream disposition.
  Add APIchanges entry for audio_service_type.
  Add audio_service_type field to AVCodecContext for encoding and reporting of the service type in the audio bitstream.
  configure: in check_ld, place new -l flags before existing ones
  support @heading, @subheading, @subsubheading, and @subsubsection in texi2pod.pl
  doc: update build system documentation
  aacenc: indentation
  aacenc: fix the side calculation in search_for_ms
  vp8.c: rename EDGE_* to VP8_EDGE_*.

Conflicts:
	doc/APIchanges
	libavcodec/avcodec.h
	libavcodec/version.h
	libavcodec/vp8.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2011-03-26 03:06:30 +01:00
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
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
bfeca7beb6 Add channel layout support to the AC-3 decoder and AC-3 parser. 
Originally committed as revision 18622 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-19 15:05:32 +00:00
Joakim Plate
4cff8dc88f Allow AC-3 parser to modify codec_id. 
Patch by Joakim Plate (elupus A ecce D se).

Originally committed as revision 17447 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-19 00:28:19 +00:00
Diego Biurrun
406792e7b0 cosmetics: Remove pointless period after copyright statement non-sentences. 
Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-19 15:46:40 +00:00
Alex Converse
11d6f38cc9 Factorise enum of AC3 error types to be usable by AAC in the ADTS patch that 
will follow

Patch by Alex Converse ( alex converse gmail com )

Originally committed as revision 16479 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-07 18:10:10 +00:00
Stefano Sabatini
987903826b Globally rename the header inclusion guard names. 
Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 07:39:47 +00:00
Justin Ruggles
14b7062829 cosmetics: make all references to AC-3 capitalized and hyphenated 
Originally committed as revision 14523 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-03 16:42:32 +00:00
David Liu
7694a7d93f Close parse context. 
Patch by David LIU david liu st com

Originally committed as revision 13962 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-25 12:30:35 +00:00
Måns Rullgård
7c43009358 add necessary #includes in headers 
Originally committed as revision 13043 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-03 13:29:39 +00:00
Michael Niedermayer
133ac890fb Add new_frame_start and need_next_header. 
based on a patch by Bartlomiej

Originally committed as revision 12895 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-19 01:59:55 +00:00
Michael Niedermayer
454064ad1e Change aac and ac3 parsers to use ff_combine_frame(). 
Originally committed as revision 12894 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-19 01:50:40 +00:00
Michael Niedermayer
8c731c9743 remove AACAC3FrameFlag 
Originally committed as revision 12888 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-18 03:09:01 +00:00
Bartlomiej Wolowiec
469d8816d6 undo changes in aac_ac3_parser 
Originally committed as revision 12778 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-09 22:11:21 +00:00
Bartlomiej Wolowiec
c09ed33e18 Corrections of errors in aac_ac3_parser 
Originally committed as revision 12759 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-07 20:54:08 +00:00
Bartlomiej Wolowiec
0a5754c3b7 change of aac_ac3_parser, so it is able to send complete portion of data to decoder 
Originally committed as revision 12758 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-05 20:09:36 +00:00
Bartlomiej Wolowiec
be1e2a2bfa removal of stream_type in AACAC3ParseContext and adding AACAC3FrameFlag 
Originally committed as revision 12622 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-28 19:59:58 +00:00
Bartlomiej Wolowiec
4e6eeaf019 using stream type in eac3 parser 
Originally committed as revision 12570 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-24 21:25:49 +00:00
Justin Ruggles
c599e297e7 Pass AACAC3ParseContext to sync() instead of individual arguments. Patch by 
Bartlomiej Wolowiec (bartek wolowiec gmail com)

Originally committed as revision 12564 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-23 15:43:29 +00:00
Diego Biurrun
5b21bdabe4 Add FFMPEG_ prefix to all multiple inclusion guards. 
Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-17 09:37:46 +00:00
Måns Rullgård
99545457bf include all prerequisites in header files 
Originally committed as revision 9344 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-06-16 22:59:13 +00:00
Aurelien Jacobs
679c2294cb cosmetics: rename for consistency after previous aac and ac3 parsers move 
Originally committed as revision 8942 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-05-08 23:29:07 +00:00
Aurelien Jacobs
99ff31dc75 move aac and ac3 parsers in their own files 
Originally committed as revision 8941 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-05-08 23:25:31 +00:00