I can't come up with a nice way to handle this. It's hard to keep the
lock-stepped input/output in this case. You can't predict whether the
MMAL decoder will output a picture (because it's asynchronous), so
you have to assume in general that any packet could produce 0 or 1
frames. You can't continue to write input packets to the decoder,
because then you might get too many output frames, which you can't
get rid of because the lavc decoding API does not allow the decoder
to return an output frame without consuming an input frame (except
when flushing).
The ideal fix is a M:N decoding API (preferably asynchronous), which
would make this code potentially much cleaner. For now, this hack
will do.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
* commit 'c0a49077ea4ff3a0ad30b9e33f1bb06ba9112aaa':
asfdec: add more checks for size left in asf packet buffer
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
Allow writing an empty channel mask into the wave format header. Useful
if the input file contains an unknown channel layout.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The recent commits change the value slightly. Even though it's
within the threshold it's better to risk as little as possible
especially when different systems, processors, FPUs and compilers
are involved.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Since TNS was fixed with the recent commits retweak the values
so it's more frequently used.
Still not enabled by default yet, though it's possible that it
will be made enabled by default in the near future.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit was made possible with the earlier commits since the
new quantization method basically means we're working always with
unsigned values. The specifications mention to use compression when
the first 2 bits are identical but they didn't mention if this should
happen before or after the conversion to signed values. Actually
they said nothing about conversion to signed values.
With this commit, coefficient compression usually always happens
which saves a lot of space, especially at extremely low bitrates
and doesn't change the quality at all.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This finally (and again) gets rid of basically everything the
specifications say about how TNS should be done. The main
problem used to be that a single filter was used for all
coefficients which despite being explicitly recommended by
the specifications usually sounds wrong, therefore it's
a corner case in the current TNS implementation.
This commit also changes the coefficient bit size, as apparently
it's better to use lower precision in case the windows are eight
short. This is apparently what fdk_aac uses, looking at the bit
stream and makes sense. Also the order when 8 SHORT windows happen
is important as 7 was too much and according to PSNR was worse
while 5 is just about correct.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
* commit 'b84675d63aaede8f6944b901250a10456c5477e6':
mmaldec: hack against buffering problems on broken input
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
* commit '5788623d29c3e806a7879210986110aced758dc2':
jpeg2000: Split codeblock decoding from the main tile decoding
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
* commit 'db53a2306f62f05faa67e6f3c60ee55a9b8e4776':
jpeg2000: Do not warn about known and skippable markers
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
* commit '9b5a4a9cce3042558e107ae1ed30d9bf3d867a35':
mmvideo: Make sure the rle does not write over the frame boundaries
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
* commit '41ed749fe987e60b0485fa721ad869590651324d':
ogg: Do not try to use the parser if it is not present
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
