Since packets all contain only a single block, the generic seek function can
be used while still maintaining block-accuracy.

fixes stream copy of raw gsm to mov.
tested with QuickTime.

The WAVE demuxer returns packets with many blocks per frame, which needs to be
parsed into single blocks. This has a side-effect of fixing the timestamps.

Signed-off-by: Reinhard Tartler <siretart@tauware.de>

update documentation to inform developers that it may be removed in a
later release.
Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Statistics for bourne.rmvb -an -f null

1 thread:  37.12s user 0.03s system  99% cpu 37.174 total
2 threads: 47.63s user 0.24s system 185% cpu 25.807 total
4 threads: 41.21s user 0.30s system 327% cpu 12.674 total

Under certain conditions pictures could be released before they were
returned with frame-threading. Broken mv computation in the upcoming
rv34 frame-threading patch was caused by this.

To prevent contexts from running out of available pictures the loop
releasing "unused" pictures has to be run for B frames too.

Fixes Libav Bug 195.

This doesn't make the code handle sample rate or upsample/downsample
change properly but this is still a good sanity check.

Based on change by Michael Niedermayer.
Signed-off-by: Alex Converse <alex.converse@gmail.com>

frame sample count calculation was incorrect

The duration of the first packet was being calculated incorrectly, leading to
an incorrect timestamp offset.

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

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

Additional comments from Måns Rullgard have been integrated
by Reinhard Tartler.
Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Fixes a compilation failure on win64.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

It is not necessary to store the bit stream length in a RV34DecContext
field.

This is a hopefully temporary solution until lavfi can properly deal
with resolution changes.

This option only applies to streamcopy, but is currently processed only
when encoding.

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

If the creation time is stored in the file as a zero, the
mov demuxer skips exporting the creation time. Currently,
files muxed without a creation time get demuxed with a
Jan 1st 1970 creation timestamp.
Signed-off-by: Martin Storsjö <martin@martin.st>

Do not display garbage for invalid/unsupported bitfields values.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

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

Remove some unneeded memsets.

Instead of busy waiting use poll();

Let pass the codec name to -pixel_format and introduce -input_format.

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

al15_44 uses independent coupling.
al18_44 uses PNS (perceptual noise substitution).
am05_44 uses main prediction and independent coupling.
Signed-off-by: Alex Converse <alex.converse@gmail.com>

Fixes al_sbr_cm_48_5.1.mp4.

The functions are not used in any part of Libav, therefore testing them in the
cabac-test is unnecessary. Since this makes them unused, remove the functions.

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

(Does not attempt to decode percetual audio data inside.)
Code coverage: libavformat/xwma.c: 3% -> 75%
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>