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>

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>

This provides at least some protection against potential accidental
corruption of AVIO buffer workspace.

Signed-off-by: Martin Storsjö <martin@martin.st>

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>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This prevents a double free

Fixes CID718285
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The interrupt callback has to be passed in during opening (setting it
after opening isn't enough), since a blocking open couldn't be
interrupted otherwise.

Options are passed down to procotols and also need to be available
during open() in most cases.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Add missing multiple inclusion guards; clean up #endif comments;
add missing library prefixes; keep guard names consistent.

It seems their replacements won't be ready anytime soon.

It's not used anywhere internally.

Salvage its documentation for ffio_read_seek.

It's not used anywhere internally.

Salvage its documentation for ffio_read_pause.

The unbuffered URLContext API will be made private, so there's no point
in this function being public.

It doesn't look fit to be a part of the public API.

Adding a temporary hack to ffserver to be able to use it, should be
cleaned up when somebody is up for it.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

And rename it to ffio_read_varlen.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

also change its prefix to ffio

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit f1ef2cd9ed)

also change its prefix to ffio

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Fixes issue 2638.
(cherry picked from commit fd085bc082)

Fixes issue 2638.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 0abdb29317)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 0ac8e2bf2b)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit b3db9ceef1)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

init_put_byte should never be used outside of lavf, since
sizeof(AVIOContext) isn't part of public ABI.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit e731b8d872)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit ae628ec1fd)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Originally committed as revision 16625 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16624 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16622 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16616 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

Originally committed as revision 15047 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12145 to svn://svn.ffmpeg.org/ffmpeg/trunk

files (and add the ff_ prefix, to avoid polluting the namespace)

Originally committed as revision 11532 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11511 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11498 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk