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Commit Graph

83 Commits

Author SHA1 Message Date
rcombs
98eeef44aa lavf/avio_internal: add ffio_write_lines for line ending normalization 2024-02-11 17:01:07 -08:00
James Almer
7f9308380f avformat/aviobuf: add ffio_read_leb() and ffio_write_leb()
Signed-off-by: James Almer <jamrial@gmail.com>
2023-12-18 15:19:36 -03:00
Andreas Rheinhardt
2a68d945cd avformat/avio: Constify data pointees of write callbacks
They are currently non-const for reasons unknown, although
avio_write() accepts a const buffer.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-09-10 22:55:42 +02:00
Andreas Rheinhardt
4f98bf9dbd avformat/avio_internal: Don't include url.h
It is only included because two very rarely used functions
use pointers to URLContexts; use struct URLContext instead.
Also move ffio_geturlcontext() so that one can avoid
a forward declaration of struct URLContext (which would be
necessary as soon as FF_API_AVIODIRCONTEXT is no more).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-09-10 21:19:29 +02:00
Andreas Rheinhardt
7001ff74ba avformat/aviobuf: Add ffio_init_(read|write)_context()
Most users of ffio_init_context() simply want to wrap
a buffer into an AVIOContext; they do not provide
function pointers at all.

Therefore this commit adds shortcuts for these two common
operations. This also allows to accept const data when reading
(i.e. the const is now cast away at a central place in
ffio_init_read_context() instead of at several callers).
This also allows to constify the data in ff_text_init_buf().

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-09-07 00:41:45 +02:00
Pierre-Anthony Lemieux
c8b5f2848d
avformat/aviobuf: ffio_copy_url_options
Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com>
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
2021-12-19 00:35:24 +10:00
Jan Ekström
682bafdb12 avformat/avio{,buf}: introduce public AVIOContext::bytes_{read,written}
Such fields can be seen as generally useful in cases where the
API user is not implementing custom AVIO callbacks, but still would
like to know if data is being read or written out, such as in case
data is being read from input but no AVPacket has been received yet.
2021-10-24 13:04:39 +03:00
Jan Ekström
d39b58dc32 avformat/avio: privatize source of truth for AVIOContext::written
Looking at 3f75e5116b, the field
was supposed to be private, but during merging the field and the
group that had the comment about it got separated.

Thus, move the actual privately utilized state of this variable
into the private FFIOContext. Additionally, name the private field
somewhat better, so that it does not get confused with the amount
of bytes written out.
2021-10-24 13:04:26 +03:00
Jan Ekström
847fd8de7c avformat/{aviobuf,avio_internal}: add max_len argument to ff_read_string_to_bprint_overwrite
This is especially useful when reading things such as null-terminated
strings from MOV/MP4-likes, where the size of the box is known, but
not the exact size of the string.

Signed-off-by: Jan Ekström <jan.ekstrom@24i.com>
2021-10-04 17:13:21 +03:00
Jan Ekström
151f46e84d avformat/{aviobuf,avio_internal}: add ff_read_string_to_bprint_overwrite
For now, same as ff_read_line_to_bprint_overwrite, but reads until
the end of a null-terminated string.

Signed-off-by: Jan Ekström <jan.ekstrom@24i.com>
2021-10-04 17:13:21 +03:00
Andreas Rheinhardt
a46e78d5b7 avformat/aviobuf: Extend ffio_fill to 64bits
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-09-24 00:14:25 +02:00
Andreas Rheinhardt
45bfe8b838 avformat/avio: Move internal AVIOContext fields to avio_internal.h
Currently AVIOContext's private fields are all over AVIOContext.
This commit moves them into a new structure in avio_internal.h instead.
Said structure contains the public AVIOContext as its first element
in order to avoid having to allocate a separate AVIOContextInternal
which is costly for those use cases where one just wants to access
an already existing buffer via the AVIOContext-API.
For these cases ffio_init_context() can't fail and always returned zero,
which was typically not checked. Therefore it has been made to not
return anything.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-08-25 23:01:54 +02:00
Andreas Rheinhardt
530ac6aa30 avformat/aviobuf: Make ffio_set_buf_size() static
Possible since 9c3adb7ce2.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-08-25 23:01:54 +02:00
Andreas Rheinhardt
fd101c9c3b avformat/internal: Move ff_read_line_to_bprint_overwrite to avio_internal.h
It only uses an AVIOContext and an AVBPrint.

When doing so, it turned out that several non-users of
ff_read_line_to_bprint_overwrite() and ff_bprint_to_codecpar_extradata()
relied on libavformat/internal.h to include bprint.h or avstring.h
for them. In order to avoid a repeat of this and in order to reduce
unnecessary dependencies, a forward declaration of struct AVBPrint is
used instead of including bprint.h.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-07-29 22:02:05 +02:00
Marton Balint
da74a74061 avformat/aviobuf: discard part of the IO buffer in ffio_ensure_seekback if needed
Previously ffio_ensure_seekback never flushed the buffer, so successive
ffio_ensure_seekback calls were all respected. This could eventually cause
unlimited memory and CPU usage if a demuxer called ffio_ensure_seekback on all
it's read data.

Most demuxers however only rely on being able to seek back till the position of
the last ffio_ensure_seekback call, therefore we change the semantics of
ffio_ensure_seekback so that a new call can invalidate seek guarantees of the
old. In order to support some level of "nested" ffio_ensure_seekback calls, we
document that the function only invalidates the old window (and potentially
discards the already read data from the IO buffer), if the newly requested
window does not fit into the old one.

This way we limit the memory usage for ffio_ensure_seekback calls requesting
consecutive data windows.

Signed-off-by: Marton Balint <cus@passwd.hu>
2020-10-09 21:07:18 +02:00
Andreas Rheinhardt
639728f51a avformat/aviobuf: Add function to reset dynamic buffer
Resetting a dynamic buffer means to keep the AVIOContext and the
internal buffer used by the dynamic buffer. This is done in order to
save (re)allocations when one has a workflow where one opens and closes
dynamic buffers in sequence.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2020-03-30 05:50:49 +02:00
tomajsjiang
3d1506c630 lavf/avio: add a ffio_realloc_buf API for AVIO buffer realloc
Add new API ffio_realloc_buf for AVIO buffer realloc.

Signed-off-by: Zhongxing Jiang <tomajsjiang@tencent.com>
2019-08-15 09:27:11 +08:00
Jeyapal, Karthick
62f63b24bf libavformat/avio: Utility function to return URLContext 2017-11-29 14:31:34 +08:00
wm4
5d76674756 lavf: make avio_read_partial() public
Main use-case is proxying avio through a foreign I/O layer and a custom
AVIO context, without losing latency and performance characteristics.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Merged from Libav commit 173b56218f.
2017-09-01 17:56:33 +02:00
James Almer
155f4e9630 avformat/avio: add a crc callback function for CRC-32 IEEE-LE
Reviewed-by: Nicolas George <george@nsup.org>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
2016-08-04 16:25:32 -03:00
Hendrik Leppkes
0d4b8a2c16 hls: read protocol options through the AVIOContext
This reverts commit 9f9ed79d4c.

The hlsopts member was never set anywhere and always NULL, furthermore
the HLS demuxer needs to retrieve the proper options from the underlying
http protocol (cookies, user-agent, etc), so a dummy context won't help.

Instead, use the AVIOContext directly to access the options.
2016-03-16 10:31:36 +01:00
Derek Buitenhuis
93629735d7 avformat: Add a protocol blacklisting API
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-03-04 16:13:42 +00:00
Derek Buitenhuis
9f9ed79d4c hls: Add and use a memebr of AVIOInternal rather than abuse opaque
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-02-29 20:10:11 +00:00
Derek Buitenhuis
1a12eb4a73 Merge commit '29c2d06d67724e994980045afa055c6c34611b30'
* commit '29c2d06d67724e994980045afa055c6c34611b30':
  cosmetics: Drop empty comment lines

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-02-24 17:31:44 +00:00
Diego Biurrun
29c2d06d67 cosmetics: Drop empty comment lines 2016-02-18 15:35:30 +01:00
Michael Niedermayer
1dba8371d9 avformat: add protocol_whitelist
Note to maintainers: update tools

Note to maintainers: set a default whitelist for your protocol
If that makes no sense then consider to set "none" and thus require the user to specify a white-list
for sub-protocols to be opened

Note, testing and checking for missing changes is needed

Reviewed-by: Andreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-02-02 03:39:34 +01:00
Michael Niedermayer
ebab902a1c Merge commit 'bff0349d9da527084e1433167466d8afc9e25c7f'
* commit 'bff0349d9da527084e1433167466d8afc9e25c7f':
  avio: Add avio_read wrapper to simplify error checking

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-01 00:43:50 +02:00
Vittorio Giovara
bff0349d9d avio: Add avio_read wrapper to simplify error checking
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2015-05-31 13:05:13 +02:00
Michael Niedermayer
59db9e6949 avformat/internal: Fix warning about struct declaration
Moving ffio_open2_wrapper() to internal as it uses AVFormatContext

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-05-12 03:24:19 +02:00
Michael Niedermayer
541d75f9a0 avformat: add callback for opening further files
Previous version reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-05-11 21:55:18 +02:00
Michael Niedermayer
1fb3642317 Merge commit 'c86d8aed748adc3ba8df96fb1fe14aa45da77a31'
* commit 'c86d8aed748adc3ba8df96fb1fe14aa45da77a31':
  avio: Rename avclass symbols relating to avio

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-02-28 23:02:42 +01:00
Martin Storsjö
c86d8aed74 avio: Rename avclass symbols relating to avio
Don't prefix them ffio_url, which is misleading, sounding too
much like the urlprotocol layer (like ffurl_*).

Signed-off-by: Martin Storsjö <martin@martin.st>
2015-02-28 22:07:04 +02:00
Michael Niedermayer
6e9bbaca6c Merge commit '8a273a746061a112e5e35066a8fd8e146d821a62'
* commit '8a273a746061a112e5e35066a8fd8e146d821a62':
  avio: Add an internal utility function for freeing dynamic buffers

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-02-25 00:33:09 +01:00
Martin Storsjö
8a273a7460 avio: Add an internal utility function for freeing dynamic buffers
Signed-off-by: Martin Storsjö <martin@martin.st>
2015-02-24 23:07:41 +02:00
Carl Eugen Hoyos
ff9a154157 Add int64_t probesize2 instead of int probesize to AVFormatContext.
Allows to set a probesize >2G.
Tested-by: Oliver Fromme
2014-07-30 11:09:25 +02:00
Lou Logan
88f2586adb fix various typos
Signed-off-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-03 10:58:19 -08:00
Michael Niedermayer
cdc166acd8 Merge commit '32d05934abc7427bb90380a4c1ab20a15fd7d821'
* commit '32d05934abc7427bb90380a4c1ab20a15fd7d821':
  mp3dec: decode more data from Info header

Conflicts:
	libavformat/mp3dec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-04-18 00:38:07 +02:00
Alessandro Ghedini
32d05934ab mp3dec: decode more data from Info header
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2014-04-17 20:08:19 +02:00
Michael Niedermayer
d5ec8ba7f2 Do not leave positive values undefined when negative are defined as error
Define positive return values as non errors and leave further meaning undefined
This allows future extensions to use these values

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-10-19 16:42:57 +02:00
Michael Niedermayer
2ad8056c5e Merge commit '3627ce2f1dab1d33b7f99d78907a3e4d86b7d847'
* commit '3627ce2f1dab1d33b7f99d78907a3e4d86b7d847':
  aviobuf: Add functions for null buffers

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-09-20 12:26:09 +02:00
Martin Storsjö
3627ce2f1d aviobuf: Add functions for null buffers
Null buffers are useful for simulating writing to a real buffer
for the sake of measuring how many bytes are written.

Signed-off-by: Martin Storsjö <martin@martin.st>
2013-09-19 22:42:37 +03:00
Michael Niedermayer
a0fb608396 Merge commit '5afe1d27912be9b643ffb4ddc21f6d920260dbb0'
* commit '5afe1d27912be9b643ffb4ddc21f6d920260dbb0':
  avio: Add const qualifiers to ffio_read_indirect

Conflicts:
	libavformat/mpegts.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-08-08 12:04:46 +02:00
Ben Avison
5afe1d2791 avio: Add const qualifiers to ffio_read_indirect
This provides at least some protection against potential accidental
corruption of AVIO buffer workspace.

Signed-off-by: Martin Storsjö <martin@martin.st>
2013-08-08 11:09:00 +03:00
Michael Niedermayer
8878aef048 Merge commit 'daf1e0d3de03bd424016e2a7520e4e94ece5c0ac'
* commit 'daf1e0d3de03bd424016e2a7520e4e94ece5c0ac':
  avio: Add an internal function for reading without copying

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-08-06 15:02:27 +02:00
Ben Avison
daf1e0d3de avio: Add an internal function for reading without copying
As long as there is enough contiguous data in the avio buffer,
just return a pointer to it instead of copying it to the caller
provided buffer.

Signed-off-by: Martin Storsjö <martin@martin.st>
2013-08-05 15:14:25 +03:00
Michael Niedermayer
186ec17843 avformat/aviobuf: Add ffio_ensure_seekback()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-07-04 19:13:38 +02:00
Michael Niedermayer
af804dbe9e Merge commit '523c7bd23c781aa0f3a85044896f5e18e8b52534'
* commit '523c7bd23c781aa0f3a85044896f5e18e8b52534':
  misc typo, style and wording fixes

Conflicts:
	libavcodec/options_table.h
	libavutil/pixfmt.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-12-19 14:28:58 +01:00
Diego Biurrun
523c7bd23c misc typo, style and wording fixes 2012-12-18 13:36:51 +01:00
Michael Niedermayer
120b38b966 avio: redesign ffio_rewind_with_probe_data()
This prevents a double free

Fixes CID718285
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-10-13 02:08:59 +02:00
Michael Niedermayer
e39eeb10d1 lavf: split out ffio_limit()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-12-19 11:57:34 +01:00