d730dd8c53
swscale: Forward colorspace updates to the 2nd cascaded context in case of alphablend
The first just does the blending and wouldnt do anything with the colorspace values
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
21c7272859
swscale/utils: Forward luma range to the cascaded context for alphablending
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
319898bba2
swscale/utils: handle gray+alpha formats like gray for luma ranges
Its illogic to handle gray differently depending on the existence of an alpha channel
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
816cf5181e
swscale/utils: If the source has no alpha then disable alpha blendaway
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
5d8e836d0e
Replace all remaining occurances of step/depth_minus1 and offset_plus1
9 years ago
2268db2cd0
lavu: Drop the {minus,plus}1 suffix from AVComponentDescriptor fields
The new fields can be accessed directly and are more intelligible.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
9 years ago
3059562aa1
swscale: re-enable gamma
+added gamma conversion to refactored code
9 years ago
1acd6311a1
swscale/utils: If cascaded contexts are used forward sws_setColorspaceDetails() to the first context
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
8e05f9217a
swscale/utils: Split scaling if possible and yuv->yuv with different matrixes is requested
This uses a RGB intermediate, a more optimal solution would be to perform the rematrixing
directly in subsampled YUV, this is quite a bit more complicated though
Fixes Ticket4805
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
e0a3173a94
swscale: refactor horizontal scaling
+ split color conversion from scaling
- disabled gamma correction, until it's refactored too
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
0f9d46b70d
swscale/alphablend: Support chroma subsampling
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
b7faa9d314
swscale/alphablend: support packed pixel formats
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
d0e0757e9a
swscale: Implement alphablendaway for planar 4:4:4 formats
Fixes Ticket4746
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
c382d9e8cb
swscale: Add sws_alloc_set_opts()
This simplifies allocating and initializing swscale contexts with custom options.
The function is internal currently but could be moved into the public header
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago
3cb8eee6f7
swscale: ayuv64le output support
Signed-off-by: Paul B Mahol <onemda@gmail.com>
10 years ago
052f64ecb2
swscale: ayuv64le input support
Signed-off-by: Paul B Mahol <onemda@gmail.com>
10 years ago
a5d44d5c22
swscale/utils: Clear pix buffers
Fixes use of uninitialized memory
Fixes: a96874b9466b6edc660a519c7ad47977_signal_sigsegv_7ffff713351a_744_nc_sample.avi with memlimit 2147483648
Found-by: Samuel Groß, Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
10 years ago
2778fdbe54
swscale: implement YA8 output
Signed-off-by: Paul B Mahol <onemda@gmail.com>
10 years ago
e29d996149
swscale/output: Add rgba64/rgb48/bgra64/bgr48 output functions with full chroma interpolation
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
80b5a1e2ee
Mark vectors as NAN instead of dereferencing NULL pointers on malloc failure
Found-by: Daemon404
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
ae0148ff60
swscale: Assert that pixel format descriptor is not NULL
This may help static analyzers, the pixel format is checked
during initialization
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
711d8812ad
swscale: add yuv440p10/12 pixfmts.
10 years ago
b57f9f5724
swscale/swscale: Get rid of the SWS_GAMMA_CORRECT flag
This avoids using up a bit of the public flags
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
2a7128f4ed
Add gamma encodign/decoding before/after scaling in libswscale
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
7ebb302229
swscale: Check memory allocation
Bug-Id: CID 1267890
CC: libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
10 years ago
fa74058dd3
swscale/utils: Fix undefined shift in initFilter()
Found-by: Clang -fsanitize=shift
Reported-by: Thierry Foucu <tfoucu@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
007498fc1a
swscale/utils: clear formatConvBuffer on allocation
Fixes use of uninitialized memory
Fixes: asan_heap-oob_35ca682_1474_cov_3230122439_aletrek_tga_16bit.mov
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
fb8e5044b4
swscale/utils: add asserts to check filterpos
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
1895d414aa
swscale/utils: More carefully merge and clear coefficients outside the input
Fixes out of array read
Fixes: asan_heap-oob_35ca682_1474_cov_3230122439_aletrek_tga_16bit.mov
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
e51f22122d
swscale: Check memory allocations
CC: libav-stable@libav.org
Bug-Id: CID 1267888 / CID 1267890
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
10 years ago
692b22626e
swscale/utils: Limit filter shifting so as not to read from prior the array
Fixes out of array read
Fixes: asan_heap-oob_1fb2f9b_3780_cov_3984375136_usf.mkv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
928061670e
libswscale: GBRAP input & output and GBRAP16 input support
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
10 years ago
18982f084c
swscale: Pass through chroma positions in sws_getCachedContext
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
2f6bb86f85
swscale/utils: support bayer input + scaling, and bayer input + any supported output
Fixes Ticket4053
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
fba894615d
swscale: support internal scaler cascades
Fixes Ticket3170
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
fb7d8d50bc
swscale: remove obsolete FF_API_SWS_FORMAT_NAME cruft
Signed-off-by: James Almer <jamrial@gmail.com>
10 years ago
61af6bebb4
swscale: Allow chroma samples to be above and to the left of luma samples
Found-by: Kierank
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago
bb789016d4
swscale: Undeprecate sws_getContext()
sws_getCachedContext is not a full replacement for the function.
10 years ago
f84a1b597c
swscale: support AV_PIX_FMT_YA16 as input
Based on a long debug session with Kostya.
11 years ago
e96c3b81ca
avutil: rename AV_PIX_FMT_Y400A to AV_PIX_FMT_YA8
The rationale is that you have a packed format in form
<greyscale sample> <alpha sample> <greyscale sample> <alpha sample>
and shortening greyscale to 'G' might make one thing about Greenscale instead.
An alias pixel format and color space name are provided for compatibility.
11 years ago
b53bdae11f
swscale/utils: fix rgb -> fullrange yuv
Fixes part of Ticket3785
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
d84abf35c0
swscale/utils: remove unused define
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
6532a1a828
sws/x86: split mmxext fast bilinear scaler out
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
a4bd4733c0
swscale: Allow the max filter size to be set at compile time
This can help "extreme" resizes, e.g with some 4k stuff.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
11 years ago
ce4d91ba2a
sws: document color range >8bit oddity
11 years ago
c3417ed7fd
swscale/utils: Add check that ensures that the hardcoded struct offsets are valid
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
656fe7ecce
swscale/utils: use FF_ALLOC(Z)_ARRAY_OR_GOTO() and av_malloc(z)_array()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
3a177a9cca
swscale: Fix an undefined behaviour
Prevent a division by zero down the codepath.
Sample-Id: 00001721-google
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
11 years ago
4959a4fcf7
swscale/utils: fix changing src/dst range after initializing the context
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
fa98885be4
swscale/utils: move handling of unscaled case to the end of init function
This way all context fields get initialized and can be used without needing to reinit the context
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago
Michael Niedermayer
Hendrik Leppkes
Vittorio Giovara
Pedro Arthur
Paul B Mahol
Michael Niedermayer
Ronald S. Bultje
Federico Tomassetti
Federico Tomassetti
Kieran Kunhya
James Almer
Diego Biurrun
Derek Buitenhuis
Luca Barbato