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10 commits

Author SHA1 Message Date
Andreas Rheinhardt
1eb6bfbc1f avcodec/mpeg4_unpack_bframes_bsf: Use avpriv_find_start_code 
instead of an ad-hoc function to search for start codes in order to
remove code duplication and to improve performance.

Improved performance of finding startcodes from 52606 decicycles to
9543 decicycles based upon 262144 runs for a 1 Mb/s MPEG4 video.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-02-04 19:59:21 +01:00
James Almer
e5b1f2b027 avcodec/mpeg4_unpack_bframes_bsf: implement a AVBSFContext.flush() callback 
Signed-off-by: James Almer <jamrial@gmail.com>
 2018-08-16 23:43:12 -03:00
James Almer
bd90a2ec04 avcodec/mpeg4_unpack_bframes: cache input packets directly 
Avoids unnecessary allocs+copies and makes the code slightly simpler.

Signed-off-by: James Almer <jamrial@gmail.com>
 2018-04-25 16:34:00 -03:00
James Almer
4f2ff3a53e avcodec/mpeg4_unpack_bframes: make sure the packet is writable when data needs to be changed 
Nothing currently guarantees that the packet passed to the bsf will
be writable.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
 2018-03-22 16:41:10 -03:00
James Almer
bd60116794 avcodec/mpeg4_unpack_bframes: reduce code duplication 
Also fixes one potential leak of side data in out if
the av_packet_from_data() call fails.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
 2018-03-20 17:39:04 -03:00
Jan Sebechlebsky
1c46e53dcc avcodec/mpeg4_unpack_bframes_bsf: Check av_packet_from_data() return value 
Signed-off-by: Jan Sebechlebsky <sebechlebskyjan@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-07-22 19:04:21 +02:00
Jan Sebechlebsky
8c997b3d3d avcodec/mpeg4_unpack_bframes_bsf: Copy packet props 
mpeg4_unpack_bframes_bsf bitstream filters constructs
resulting packet using av_packet_from_data() function.
This function however modifies only buffer (data) and leaves
other fields untouched, so the content of other fields
of the output packet is undefined.
It is working with old BSF API, since old API filters
just data and the packet fields are copied in
av_apply_bitstream_filters from input packet.

This change fixes the behaviour for the new BSF API.

Signed-off-by: Jan Sebechlebsky <sebechlebskyjan@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-07-22 18:55:37 +02:00
Derek Buitenhuis
af9cac1be1 Merge commit '33d18982fa' 
* commit '33d18982fa':
  lavc: add a new bitstream filtering API

Conversions-by: Hendrik Leppkes <h.leppkes@gmail.com>
Conversions-by: Derek Buitenguis <derek.buitenhuis@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-17 18:47:40 +01:00
Michael Niedermayer
29d147c94d Merge commit '059a934806' 
* commit '059a934806':
  lavc: Consistently prefix input buffer defines

Conflicts:
	doc/examples/decoding_encoding.c
	libavcodec/4xm.c
	libavcodec/aac_adtstoasc_bsf.c
	libavcodec/aacdec.c
	libavcodec/aacenc.c
	libavcodec/ac3dec.h
	libavcodec/asvenc.c
	libavcodec/avcodec.h
	libavcodec/avpacket.c
	libavcodec/dvdec.c
	libavcodec/ffv1enc.c
	libavcodec/g2meet.c
	libavcodec/gif.c
	libavcodec/h264.c
	libavcodec/h264_mp4toannexb_bsf.c
	libavcodec/huffyuvdec.c
	libavcodec/huffyuvenc.c
	libavcodec/jpeglsenc.c
	libavcodec/libxvid.c
	libavcodec/mdec.c
	libavcodec/motionpixels.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/noise_bsf.c
	libavcodec/nuv.c
	libavcodec/nvenc.c
	libavcodec/options.c
	libavcodec/parser.c
	libavcodec/pngenc.c
	libavcodec/proresenc_kostya.c
	libavcodec/qsvdec.c
	libavcodec/svq1enc.c
	libavcodec/tiffenc.c
	libavcodec/truemotion2.c
	libavcodec/utils.c
	libavcodec/utvideoenc.c
	libavcodec/vc1dec.c
	libavcodec/wmalosslessdec.c
	libavformat/adxdec.c
	libavformat/aiffdec.c
	libavformat/apc.c
	libavformat/apetag.c
	libavformat/avidec.c
	libavformat/bink.c
	libavformat/cafdec.c
	libavformat/flvdec.c
	libavformat/id3v2.c
	libavformat/isom.c
	libavformat/matroskadec.c
	libavformat/mov.c
	libavformat/mpc.c
	libavformat/mpc8.c
	libavformat/mpegts.c
	libavformat/mvi.c
	libavformat/mxfdec.c
	libavformat/mxg.c
	libavformat/nutdec.c
	libavformat/oggdec.c
	libavformat/oggparsecelt.c
	libavformat/oggparseflac.c
	libavformat/oggparseopus.c
	libavformat/oggparsespeex.c
	libavformat/omadec.c
	libavformat/rawdec.c
	libavformat/riffdec.c
	libavformat/rl2.c
	libavformat/rmdec.c
	libavformat/rtpdec_latm.c
	libavformat/rtpdec_mpeg4.c
	libavformat/rtpdec_qdm2.c
	libavformat/rtpdec_svq3.c
	libavformat/sierravmd.c
	libavformat/smacker.c
	libavformat/smush.c
	libavformat/spdifenc.c
	libavformat/takdec.c
	libavformat/tta.c
	libavformat/utils.c
	libavformat/vqf.c
	libavformat/westwood_vqa.c
	libavformat/xmv.c
	libavformat/xwma.c
	libavformat/yop.c

Merged-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-07-27 23:15:19 +02:00
Andreas Cadhalpun
0224b35c89 avcodec: add unpack packed B-frames bitstream filter 
Fixes Ticket #2913

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-04-05 02:24:56 +02:00