Fixes ticket1392

Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit a5ad3c2382)

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

Should be easier for new users to get a working output.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 73f3f6baff)

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

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

libavcodec/utils.c:251: note: expected ‘const uint8_t *’ but argument is of type ‘const short int *’

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

It is already set to 0 by av_free_packet()

We no longer have any audio encoders using AVCodec.encode().

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

Compared to av_opt_ptr, accessors bring:

- better performance (negligible);
- compile-time type check;
- link-time existence check
  (or at worst, a dynamic linker error instead of a NULL dereference).

The field is filled with the codec context information.

The field is filled with the codec context information.

FIXME need a minor version bump.

The new lowres support is limited to decoders where lowres decoding
is possible in high quality.
I was not able to measure any speed difference, but if one is found
the 2-3 lines that might affect speed can be made compile time conditional

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

This feature is complex, of questionable utility, and slows down
normal decoding.

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

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

This improves output for formats with more than one AVCodec.

Use default alignment in audio_get_buffer()

Set avctx->channel_layout to 0 if the channel count does not match
avctx->channels.

This uses the same code as in decode_video also in decode_audio.
Should fix valgrind FATE failures for nellymoser encode test.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

This fixes a segfault where a video decoder was called
from avcodec_decode_audio*().

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Otherwise realloc would free it, which would result in double free
later.

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

This fixes race conditions that ultimately lead to memory corruption.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Neither the old nor new need it.

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

The new API allows (optionally and on by default) using a internal buffer to encode, avoiding
the need to allocate large buffers or risking failure on too small buffers.

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

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

This contains a AVCodecContext thus allowing us to prevent the
error message duplication

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

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

Fixes Ticket1104

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

No change in assembly code produced on x86_64.

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

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

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.

This only returns bits per sample when it is exactly correct. That is, the
codec contains only raw samples with no frame headers or padding. This applies
to basically all PCM codecs and a small subset of ADPCM codecs.

Also, don't bother with saving/restoring data, av_init_packet doesn't
touch it.

Based on a patch by Nicolas George <nicolas.george <at> normalesup.org>

Packets are not guranteed to be allocated by av_malloc().

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

With the encode2 API, encoders allocate huge packets to be
sure they have enough room (a typical case is mpeg4, which
allocs ~10M for 1280x768 yuv420p) but only actually use a
very small part of the buffer.

This is somewhat redundant as no decoder should call get_buffer() with such argument.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>