Otherwise it is not needed because it matches the frame size as encoded in
the extradata.

This avoids an indirection and will simplify implementation of encode2()

Gives a better estimate of buffer requirements and a better decision of
whether or not to use verbatim mode.

It is already set in avcodec_alloc_frame()

encoded ALAC does not have a fixed number of bits per sample

Prevents a division by zero later on.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

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

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

In bps == 3 case output is decoded directly.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This partially reverts commit 58dabf7bf2.
It is no longer necessary to use unaligned mov.
The swapped mov argument fix remains though.

The DC coefficient should be included, too.
This probably was missed because DC quantizer is always
even for MPEG-1/2 but this function is also used for MPEG-4.

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

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

Fixes Ticket990

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

Signed-off-by: Diego Biurrun <diego@biurrun.de>

It works as long as ParseContext is the first member of the private struct

Signed-off-by: Diego Biurrun <diego@biurrun.de>

This obviates using ParseContext1, which is slated for removal.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

This obviates using ParseContext1, which is slated for removal.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Conversion of the luma intra prediction mode to one of the constrained
("alzheimer") ones can happen by crafting special bitstreams, causing
a crash because we'll call a NULL function pointer for 16x16 block intra
prediction, since constrained intra prediction functions are only
implemented for chroma (8x8 blocks).

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

in , else (1) { if (!1) } the if conditional will never evaluate to be true.
So as making the check useless.

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

There are no audio encoders which do frame reordering.

We need to do unsigned saturation in order to cover the corner case when the
absolute coefficient value is 16777215 (the maximum value).

Fixes Bug #216

That way all mix levels as exported by avpriv_ac3_parse_header()
will have the same meaning.

Previously the 3-bit center mix level for E-AC-3 was used to index in a
4-entry table, leading to out-of-array reads.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
Signed-off-by: Alex Converse <alex.converse@gmail.com>

Comment-by-michael: iam commiting this as the code cannot work without it and likely works with it.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This changes the output order of multichannel PCE based streams.

This fixes crashes on exit when closing a bitstream filter that
hasn't allocated any private data, on OS X.

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