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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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* commit '225e84e74544062706c0159ec0737b0e1d40915f':
hls: disallow opening nested files in child demuxers
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Currently, AVStream contains an embedded AVCodecContext instance, which
is used by demuxers to export stream parameters to the caller and by
muxers to receive stream parameters from the caller. It is also used
internally as the codec context that is passed to parsers.
In addition, it is also widely used by the callers as the decoding (when
demuxer) or encoding (when muxing) context, though this has been
officially discouraged since Libav 11.
There are multiple important problems with this approach:
- the fields in AVCodecContext are in general one of
* stream parameters
* codec options
* codec state
However, it's not clear which ones are which. It is consequently
unclear which fields are a demuxer allowed to set or a muxer allowed to
read. This leads to erratic behaviour depending on whether decoding or
encoding is being performed or not (and whether it uses the AVStream
embedded codec context).
- various synchronization issues arising from the fact that the same
context is used by several different APIs (muxers/demuxers,
parsers, bitstream filters and encoders/decoders) simultaneously, with
there being no clear rules for who can modify what and the different
processes being typically delayed with respect to each other.
- avformat_find_stream_info() making it necessary to support opening
and closing a single codec context multiple times, thus
complicating the semantics of freeing various allocated objects in the
codec context.
Those problems are resolved by replacing the AVStream embedded codec
context with a newly added AVCodecParameters instance, which stores only
the stream parameters exported by the demuxers or read by the muxers.
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This is not a regression
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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* commit '81306fd4bdeb5c17d4db771e4fec684773b5790f':
hls: eliminate ffurl_* usage
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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This also deprecates our old duplicated callbacks.
* commit '9f61abc8111c7c43f49ca012e957a108b9cc7610':
lavf: allow custom IO for all files
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Reviewed-by: Andreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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probing to succeed"
This can cause problems with urls that have arguments after the filename
This reverts commit b0c57206d583517a5ea35dd7f365f8260d9106f2.
Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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extension
Possibly the check as a whole causes more problems than it helps, if so dont
hesitate to remove it
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Now all IO should go through the IO callbacks and be interceptable by
the caller.
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Some (de)muxers open additional files beyond the main IO context.
Currently, they call avio_open() directly, which prevents the caller
from using custom IO for such streams.
This commit adds callbacks to AVFormatContext that default to
avio_open2()/avio_close(), but can be overridden by the caller. All
muxers and demuxers using AVIO are switched to using those callbacks
instead of calling avio_open()/avio_close() directly.
(de)muxers that use the URLProtocol layer directly instead of AVIO
remain unconverted for now. This should be fixed in later commits.
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If the filename isnt set by the user application then the code behaves like before
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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This fixes a null pointer dereference at least
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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No case is known where these are needed
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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This will be used by the subsequent commit(s)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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* commit 'ce70f28a1732c74a9cd7fec2d56178750bd6e457':
avpacket: Replace av_free_packet with av_packet_unref
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
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`av_packet_unref` matches the AVFrame ref-counted API and can be used as
a drop in replacement.
Deprecate `av_free_packet`.
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Without EXT-X-MAP support we miss the first bytes of some streams.
These streams worked by luck before byte-ranged segment support was added in
da7759b3579de3e98deb1ac58e642b861280ba54
Fixes ticket #4797.
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Commit ad701326b43078b90 ("avformat/hls: open playlists immediately when
AVDISCARD_ALL is dropped") inadvertently caused first_packet to never be
cleared, causing select_cur_seq_no() to not use the specific code for
live streams.
In practice this means that when the user selects a different audio
track during live stream (i.e. non-VOD) playback, there may be some
additional delay as the code might select an incorrect segment at first,
and we have to wait for video to catch audio (if too late segment was
selected) or to download more following audio segments (if too early
segment was selected).
Fix that by restoring the zeroing of first_packet.
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This will give incorrect results in some cases due to not parsing segments
separately, so it currently requires -strict experimental.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Bug-Id: CID 1320426
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Fixes -Wunused-function from
http://fate.ffmpeg.org/report.cgi?time=20150820031140&slot=arm64-darwin-clang-apple-5.1
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
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Context cookies must be updated when a playlist response return Setcookie header.
Signed-off-by: wm4 <nfxjfg@googlemail.com>
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If there is no #EXT-X-BYTERANGE specified, there is no need to seek.
Seeking fails anyway for rtmp, because this protocol does not support
url_seek.
This fixes CNN.m3u from trac ticket 4797 (i.e. Debian bug #798189).
Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
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Broken by commit ba12ba859aabfa7153ba397d869db13acdaba340. This only
happens with HLS streams which use encryption and require preserving
cookies sent by the server.
Fixes trac issue #4846.
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Fixes: CID1320426
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Comment was previously slightly incorrect.
Also, it was placed in the wrong location.
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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* commit '0c73a5a53cc97f4291bbe9e1e68226edf6161744':
hls: Save and forward avio options
Conflicts:
libavformat/hls.c
Merged-by: Michael Niedermayer <michael@niedermayer.cc>
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Make possible to send the custom headers and override the user agent.
Reported-by: BenWonder
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* commit '059a934806d61f7af9ab3fd9f74994b838ea5eba':
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>
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requested
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Fixes CID1297576
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Apparently, some live streams can delete segments too early, maybe
because the client is too far behind. In this case, it's better to skip
the segment, instead of returning EOF. (Yes, the HLS demuxer actually
returns AVERROR_EOF if opening the segment returns a 404 HTTP error.)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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SAMPLE-AES encryption is not commonly used yet, but without this patch
ffmpeg is thinking that the hls segments are not encrypted which
produces broken files.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Not allocating the pls->ctx will crash in libavformat/hls.c:1410, where
it tries to dereference the field.
Sample: http://ec24.rtp.pt/liverepeater/rtpn.smil/playlist.m3u8
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Fixes potential security issue in case of running out of memory
Found-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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* commit '6df9d9b55d3f56ee7782639a7678eeeaf77f14ea':
lavf: Use av_gettime_relative
Conflicts:
libavformat/hls.c
See: f78bc96b7c1c74caf99a7139cf81ce1110404965
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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The ones left using av_gettime are NTP timestamps (for RTCP,
which is specified to send the actual current realtime clock
in RTCP SR packets), and the NUT muxer timestamper, which is
documented as using wallclock time.
Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Get rid of the many, slightly differing, implementations
of basically the same thing.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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