Guesses the sample aspect ratio of a frame, based on both the stream and the
frame aspect ratio.

Since the frame aspect ratio is set by the codec but the stream aspect ratio
is set by the demuxer, these two may not be equal. This function tries to
return the value that you should use if you would like to display the frame.

Basic logic is to use the stream aspect ratio if it is set to something sane
otherwise use the frame aspect ratio. This way a container setting, which is
usually easy to modify can override the coded value in the frames.

Signed-off-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Rationale is the same as for video width/height etc.

Appears this was forgotten

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

This moves the cpu flag parsing code from avconv to avutil so
it can be accessed elsewhere.

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

This is a new library for audio sample format, channel layout, and sample rate
conversion.

The functions operate on the sample level rather than the byte level and work
with all audio sample formats.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

This is required for letting applications to create and destroy
AVFilterInOut structs in a convenient way.

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

The header is part of the public API, in particular is used by
doc/examples/filtering_audio.c.

Based on a patch by Clément Bœsch <ubitux@gmail.com>

Also, use the new function in the AC-3 encoder.

This is a utility function for the user to get the frame duration based on
the codec id, frame size in bytes, and various AVCodecContext parameters.

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

Useful to return instead of -1 when the cause of the error is unknown,
typically from an external library.

This library does not fit into Libav as a whole and its code is just a
maintenance burden.  Furthermore it is now available as an external project,
which completely obviates any reason to keep it around.

URL: http://git.videolan.org/?p=libpostproc.git

This will allow parsers to export the duration of the current frame being
output, if known, instead of using AVCodecContext.frame_size.

This makes it possible to dintinguish them from PAL8.

Fixes an invalid write in avpicture_layout().

Deprecate avcodec_encode_video().

Factorize code and provide ratio parsing consistency.

Wrapper around av_fast_malloc() that keeps FF_INPUT_BUFFER_PADDING_SIZE
zero-padded bytes at the end of the used buffer.

Based on a patch by Reimar Döffinger <Reimar.Doeffinger@gmx.de>.

Fixes bug 212.

It allows to check whether an AVCodecContext is open in a documented
way. Right now the undocumented way this check is done in lavf/lavc is
by checking whether AVCodecContext.codec is NULL. However it's desirable
to be able to set AVCodecContext.codec before avcodec_open2().

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

The functions are already av_ prefixed and intfloat header is already provided.
Install libavutil/intfloat.h

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

There was no minor bump for making avcodec_alloc_context3() public and
deprecating the other two, so I'm using the first next lavc bump.

The lavf-ffm test results change because ffmenc writes
AVCodecContext.flags/flags2 and the defaults for those change.

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