Moves much of the setup logic for VAAPI decoding into lavc; the user
now need only provide the hw_frames_ctx.
(cherry picked from commit 123ccd07c5)
(cherry picked from commit 5e879b54a3)
(cherry picked from commit 0aec37e625)
(cherry picked from commit cfa4eb4fba)
This decoder can decode all existing SpeedHQ formats (SHQ0–5, 7, and 9),
including correct decoding of the alpha channel.
1080p is decoded in 142 fps on one core of my i7-4600U (2.1 GHz Haswell),
about evenly split between bitstream reader and IDCT. There is currently
no attempt at slice or frame threading, even though the format trivially
supports both.
NewTek very helpfully provided a full set of SHQ samples, as well as
source code for an SHQ2 encoder (not included) and assistance with
understanding some details of the format.
Decode the Image Data Section (which contains merged pictures).
Support RGB/A and Grayscale/A in 8bits and 16 bits per channel.
Support uncompress and rle decompression in Image Data Section.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
There is really no need for two aac wrappers, we already have
libfdk-aac which is better. Not to mention that faac doesn't
even support HEv1, or HEv2. It's also under a license which is
unusable for distribution, so it would only be useful to people
who will compile their own ffmpeg, only use it themselves (which
at that point should just use fdk-aac).
Signed-off-by: Josh de Kock <josh@itanimul.li>
* Multichannel support for TrueHD is experimental
There should be downmix substreams present for 2+ channel bitstreams,
but ffmpeg decoder doesn't need it. Will add support for this soon.
* There might be lossless check failures on LFE channels
* 32-bit sample support has been removed for now, will add it later
While testing, some samples gave lossless check failures when enforcing
s32. Probably this will also get solved with the LFE issues.
Signed-off-by: Jai Luthra <me@jailuthra.in>
lavc/movenc rely on avpriv_dnxhd_parse_header_prefix declared by
dnxhddata.h since e47981dab7.
Fixes a missing symbol error in lavc/movenc if the dnxhd encoder is not
enabled.
Still much left to optimize, but it provides a significant performance
improvement - 10% for 300Mbps (1080p30), 25% for 1.5Gbps (4k 60fps) in
comparison with the default implementation.
Signed-off-by: Rostislav Pehlivanov <rpehlivanov@obe.tv>
While it is less featureful (and slower) than the built-in H264
decoder, one could potentially want to use it to take advantage
of the cisco patent license offer.
Signed-off-by: Martin Storsjö <martin@martin.st>