- 14 Jan, 2016 19 commits
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Aman Gupta authored
This new mode is useful for realtime decoding of closed captions so they can be display along with mpeg2 frames. Closed caption streams contain two major types of captions: - POPON captions, which are buffered off-screen and displayed only after EOC (end of caption, aka display buffer) - PAINTON/ROLLUP captions, which are written to the display as soon as they arrive. In a typical real-time eia608 decoder, commands like EOC (end of caption; display buffer), EDM (erase display memory) and EBM (erase buffered memory) perform their expected functions as soon as the commands are processed. This is implemented in the real_time branches added in this commit. Before this commit, and in the !real_time branches after this commit, the decoder cleverly implements its own version of the decoder which is specifically geared towards buffered decoding. It does so by actively ignoring commands like EBM (erase buffered memory), and then re-using the non-display buffer to hold the previous caption while the new one is received. This is the opposite of the real-time decoder, which uses the non-display buffer to hold the new caption while the display buffer is still showing the current caption. In addition to ignoring EBM, the buffered decoder also has custom implementations for EDM and EOC. An EDM (erase display memory) command flushes the existing contents before clearing the screen, and EOC similarly always flushes the active buffer (the previous subtitle) before flipping buffers.
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Aman Gupta authored
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Michael Niedermayer authored
Fixes: out of array reads Fixes: 07e8b9c5d348ccdf7add0f37de20cf6c/asan_heap-oob_27e8df7_6849_e56653f768070ec8cb52f587048444c2.mov Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Michael Niedermayer authored
This avoids running various table inits unnecessarily Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
This makes SWS more robust Fixes: 07650a772d98aa63b0fed6370dc89037/asan_heap-oob_27ddeaf_2657_2c81ff264dee5d9712cb3251fb9c3bbb.264 Fixes: out of array read Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Claudio Freire authored
This is quite an accurate approximation; testing shows ~ 2ulp error in the floating point result. Tested with FATE. Alternatively, if one wants "full accuracy", one can use powf, or sqrt instead of sqrtf. With powf, one gets 1 ulp error (theoretically should be 0, as 0.75 is exactly representable) on GNU libm, with sqrt, 0 ulp error. Signed-off-by:
Ganesh Ajjanagadde <gajjanagadde@gmail.com> Abstracted into pos_pow34 utility function Signed-off-by:
Claudio Freire <klaussfreire@gmail.com>
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Ganesh Ajjanagadde authored
Reviewed-by:
Ronald S. Bultje <rsbultje@gmail.com> Signed-off-by:
Ganesh Ajjanagadde <gajjanagadde@gmail.com>
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Andreas Cadhalpun authored
src and dst are only 8-bit-aligned, so accessing them as uint16_t causes SIGBUS crashes on architectures like sparc. This fixes ubsan runtime error: load of misaligned address for type 'const uint16_t', which requires 2 byte alignment Reviewed-by:
Michael Niedermayer <michael@niedermayer.cc> Signed-off-by:
Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
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- 13 Jan, 2016 19 commits
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Maxim Andreev authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Fixes out of array read Fixes: 04442da73d935b776d2236282588d4f9/signal_sigsegv_2625a69_8790_ae85ffc889070663319b3417ede777b0.mov Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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James Almer authored
Fixes a warning with -Wformat-extra-args
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Michael Niedermayer authored
decoding changes from 17 to 20 fps Reviewed-by; Rostislav Pehlivanov <atomnuker@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Reviewed-by:
Rostislav Pehlivanov <atomnuker@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
This avoids closing and opening the bit reader Reviewed-by:
Rostislav Pehlivanov <atomnuker@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
All MDCT outputs must be checked in case of 128point MDCTs Fixes: out of array read Fixes: 04442da73d935b776d2236282588d4f9/signal_sigsegv_2625a69_351_52ca6226eb83547a2d26e322ce84ed84.mov Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Kieran Kunhya authored
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Claudio Freire authored
Use the ability to invert phase with ms_mask instead of changing the codebook when possible, to avoid having to switch codebooks if some bands are INTENSTY_BT and others are INTENSITY_BT2, since usually a set ms_mask uses less bits that a codebook change. While it may not always be a win (ie: if it causes an ms_mask bitmap to be sent when it wouldn't have been otherwise), it's unlikely since the ms_mask bitmap will almost always be there already for M/S itself.
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Claudio Freire authored
The relative error between two encoding strategies is the simple difference of rate-distortion values, and not the absolute difference. An absolute measure would allow worsening of the quantization error as well as improving.
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Claudio Freire authored
1. Fix sf_idx and band_type addressing to address only the first subwindow in the group (others could hold garbage values) 2. Don't step on ms_mask when is_mask is set. I/S selection already sets the ms_mask properly and shouldn't be overridden. 3. Use mid/sid cb/sf when computing coding error, as should be since those are the cb/sfs that will eventually be set. 4. Fix distortion computation on multi-subwindow groups (was subtracting the bits terms multiple times) 5. Clear ms_mask when one side uses PNS and the other doesn't. When using PNS, ms_mask signals correlated noise, which can be detected just like regular M/S detection, so we don't skip noise bands, but when only one side uses PNS setting the flag can confuse some encoders, so avoid that.
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Claudio Freire authored
Correct addressing of sf_idx and band_type arrays in I/S code. Both arrays don't guarantee valid values for subwindows at all times, depending on which coder is being used, which could result in reading of garbage values. Instead, only the first subwindow in the window group has to be used, ie: use w*16+g instead of (w+w2)*16+g
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Claudio Freire authored
Change the condition for application of the M/S transform to match that of the decoder. Namely, that no special coding books must be in use in either channel. While the condition ought to be equivalent to the current one when the invariant of is_mask is kept, matching the decoder's condition is safer and easier to maintain.
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Claudio Freire authored
In rare corner cases it could still fail an assert on sf_diff due to failure to update prev_sf in some code paths. Fix that case.
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Claudio Freire authored
Fixes an assertion error reported in #2686 that happens when using prediction (either explicitly or implicitly by setting the AAC main profile), since prediction code would allow creating new zeroes or removing existing ones, without properly checking for SF delta violations. This patch forbids creating/removing zeroes, perhaps an overly conservative approach, but a safe one. More permissive and sophisticated approaches may be attempted in the future.
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Carl Eugen Hoyos authored
Fixes ticket #5151.
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Michael Niedermayer authored
Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Fixes out of array read Fixes: 03c406ec9530e594a074ce2979f8a1f0/asan_heap-oob_7dec26_4664_37c52495b2870a2eaac65f53958e76c1.flac Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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- 12 Jan, 2016 2 commits
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James Zern authored
since: cbcc88c0 libvpx: Support setting color range for vp9. Reviewed-by:
Ronald S. Bultje <rsbultje@gmail.com> Signed-off-by:
James Zern <jzern@google.com>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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