Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

This is the equivalent to what 7d317d47
did for the codec-specific options.
av_opt_copy has specific handling so it's fine that we already copied
the whole context before.
Signed-off-by: NReimar Döffinger <Reimar.Doeffinger@gmx.de>

previously, specifying -hls_segment_filename meant
s->base_output_dirname was never set, causing a segfault:

(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
* frame #0: 0x00007fffbf7d82d0 libsystem_platform.dylib`_platform_strcmp + 80
frame #1: 0x00000001005f4dcf libavformat.57.dylib`io_open_default(s=0x000000010481cc00, pb=0x0000000104806020, url=0x0000000000000000, flags=2, options=0x0000000000000000) at options.c:107
frame #2: 0x0000000100528968 libavformat.57.dylib`hls_mux_init(s=0x000000010481cc00) at hlsenc.c:595
frame #3: 0x00000001005273cb libavformat.57.dylib`hls_write_header(s=0x000000010481cc00) at hlsenc.c:1518
frame #4: 0x00000001005c08d0 libavformat.57.dylib`write_header_internal(s=0x000000010481cc00) at mux.c:486
frame #5: 0x00000001005c0774 libavformat.57.dylib`avformat_write_header(s=0x000000010481cc00, options=0x00000001029026e8) at mux.c:539

Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NThomas Mundt <tmundt75@gmail.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

The complex vertical low-pass filter slightly over-sharpens the picture. This becomes visible when several transcodings are cascaded and the error potentises, e.g. some generations of HD->SD SD->HD.
To prevent this behaviour the destination pixel must not exceed the source pixel when the average of the pixels above and below is less than the source pixel. And the other way around.

Tested and approved in a visual transcoding cascade test by video professionals.
SSIM/PSNR test with the first generation of an HD->SD file as a reference against the 6th generation(3 x SD->HD HD->SD):
Results without the patch:
SSIM Y:0.956508 (13.615881) U:0.991601 (20.757750) V:0.993004 (21.551382) All:0.974405 (15.918463)
PSNR y:31.838009 u:48.424280 v:48.962711 average:34.759466 min:31.699297 max:40.857847
Results with the patch:
SSIM Y:0.970051 (15.236232) U:0.991883 (20.905857) V:0.993174 (21.658049) All:0.981290 (17.279202)
PSNR y:34.412108 u:48.504454 v:48.969496 average:37.264644 min:34.310637 max:42.373392
Signed-off-by: NThomas Mundt <tmundt75@gmail.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Preload data in band filter 0-8 for better pipeline parallelization.
Signed-off-by: NKaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: NManojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Remove loops and unroll as block sizes are known.
Signed-off-by: NKaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: NManojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Optimize luma intra case by reducing conditional cases.
Signed-off-by: NKaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: NManojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Regression since e2f8f140.

AppKit is not present on iOS.

Fixes decoding on 32-bit devices with Android NDK >= 15.

Fixes ticket #6404.
Fixes ticket #6666.
Signed-off-by: NJacek Jendrzej <satbaby@kawaii.com>

Fix ticket #2674
Tested with examples from ticket 2674.
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Align the buffers. Remove reduandant constant array.
Signed-off-by: NKaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: NManojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Seperate the filter processing in all strong, all weak and strong + weak cases.
Signed-off-by: NKaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: NManojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NJun Zhao <jun.zhao@intel.com>
Signed-off-by: NMark Thompson <sw@jkqxz.net>

DRM_FORMAT_R8 was added in libdrm 2.4.68.
DRM_FORMAT_R16 was added in libdrm 2.4.82.
Signed-off-by: NJun Zhao <jun.zhao@intel.com>
Signed-off-by: NMark Thompson <sw@jkqxz.net>

Reported-by: Moritz Barsnick
Signed-off-by: NPaul B Mahol <onemda@gmail.com>

Found-by: NJames Almer <jamrial@gmail.com>

Intended for use with hardware frames for which rawvideo is not
sufficient.  Requires the trusted packet flag to be set - decoding
fails if not to avoid security issues (the wrapped AVFrame can
contain pointers to arbitrary data).

ret is 0 by default.
Reviewed-by: NMark Thompson <sw@jkqxz.net>
Signed-off-by: NJames Almer <jamrial@gmail.com>

Some targets, like NetBSD and DJGPP, don't seem to support it.
Signed-off-by: NJames Almer <jamrial@gmail.com>

Signed-off-by: NParas Chadha <paraschadha18@gmail.com>
Signed-off-by: NJames Almer <jamrial@gmail.com>

Missed in 6eb102a6.
Signed-off-by: NJames Almer <jamrial@gmail.com>

This avoids confusion with equivalent H.265 SEI values when both are
being used at the same time.

(cherry picked from commit 6ea220cb)

Signed-off-by: NPaul B Mahol <onemda@gmail.com>

Based on mail from IRT
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>