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

This will allow decoding to md5 and doing a diff comparison to a reference
checksum instead of a fuzzy stddev or oneoff comparison.
Signed-off-by: Mans Rullgard <mans@mansr.com>

The output format is not always the same as the file extension,
which is sometimes required for correct probing. We can avoid
probing by specifying the format since it is already known.

Add cvtdq2ps and cvtps2dq to the AVX instruction list.
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

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

The decoder can change the layout and channel count during decoding,
but currently we only validate that the two are compatible when opening
the codec. This checks for incompatibilities after each decoded frame.

Fix this warning:
libavformat/aviobuf.c:663:20: warning: assignment discards qualifiers from pointer target type

Although this is a public header, it should remain source and
binary compatible.
Signed-off-by: Mans Rullgard <mans@mansr.com>

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

This also allows dropping some PPC-specific ugliness from dsputil.[ch].

This fixes the warning:
libavcodec/mpegaudiodec.c:1704:14: warning: variable ‘out_size’ set but not used

If a video track specifies a zero frame rate (invalid but occurs),
this results in a division by zero and subsequent undefined conversion
to integer.  Setting the default duration from the frame rate only
if the latter is greater than zero avoids such problems.
Signed-off-by: Mans Rullgard <mans@mansr.com>

It avoids some rounding errors.

This is in line with other demuxers and overall seems more correct
than assuming codec time base.

This improves output for formats with more than one AVCodec.

Do not pointlessly call ff_alloc_packet multiple times,
and fix an infinite loop by clamping the maximum
number of bits to target in the algorithm that does
not use lambda.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This matches the value for the plain WAVEFORMATEX header.
Also fixes stream copy to WAVE for non-16-bit raw pcm.

This allows the user to specify an input channel layout without avconv aborting because the
"channels" option was not found.

The buffer must have its dimension, pixel format and aspect ratio
set.

Save the old output configuration (if it has been used
successfully) when trying a new configuration. If the new configuration
fails to decode, restore the last successful configuration.

Signed-off-by: Alex Converse <alex.converse@gmail.com>

This option is the stream identifier to play or to publish.
Sometimes the URL parser cannot determine the correct
playpath automatically, so it must be given explicitly
using this option (ie. -rtmp_playpath).
Signed-off-by: Martin Storsjö <martin@martin.st>

This option is the name of application to connect on the RTMP server.
Sometimes the URL parser cannot determine the app name automatically,
so it must be given explicitly using this option (ie. -rtmp_app).
Signed-off-by: Martin Storsjö <martin@martin.st>

Without these, the expansion contains things like --1 with
some compilers resulting in build errors.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Fixes crashes when using biweight on win64.

Prevents it from referring to the rest of the list.

Prevents extensive buffering when overlaying a single picture.