5 Commits

Author SHA1 Message Date
Guillaume Martres
e43805d401 hevc: remove useless clip in FUNC(sao_band_filter)()
The src buffer should only contain values in the interval
[0, (1 << BIT_DEPTH) - 1]. Since shift = (BIT_DEPTH - 5), src[x] >> shift
must be in the interval [0, 31], so no clip is needed.

This removes the code that was changed in 5856bca360c5bc3e340a357d91b1f993c80a7bea
as the clip that was repositioned in that commit is removed

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit b00a8b4d194f1bf23343f3f42138affa1fe26641)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-13 16:15:07 +01:00
Guillaume Martres
ea21b7b68c hevc: clip pixels when transquant bypass is used
Fixes: asan_stack-oob_eae8e3_7333_WPP_B_ericsson_MAIN10_2.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

This is a more proper fix than 5856bca360c5bc3e340a357d91b1f993c80a7bea

The reconstructed picture should always be clipped (see section 8.6.5),
previously we did not clip coding units where
cu_transquant_bypass_flag == 1

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit c9fe0caf7a1abde7ca0b1a359f551103064867b1)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-13 16:12:17 +01:00
Luca Barbato
738a2a04b6 hevc: Clip the pixel before shifting
Prevent an out of array bound read.

Fixes: asan_stack-oob_eae8e3_7333_WPP_B_ericsson_MAIN10_2.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 5856bca360c5bc3e340a357d91b1f993c80a7bea)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-13 16:12:01 +01:00
Mickaël Raulet
c68faca68e hevc: fix transform_skip which is only valid for 4x4(cherry picked from commit 740e5a71e5121dbf3fabdc4fec97829c18ecc2d8)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-10-22 08:41:14 +02:00
Guillaume Martres
c8dd048ab8 lavc: add a HEVC decoder.
Initially written by Guillaume Martres <smarter@ubuntu.com> as a GSoC
project. Further contributions by the OpenHEVC project and other
developers, namely:

Mickaël Raulet <mraulet@insa-rennes.fr>
Seppo Tomperi <seppo.tomperi@vtt.fi>
Gildas Cocherel <gildas.cocherel@laposte.net>
Khaled Jerbi <khaled_jerbi@yahoo.fr>
Wassim Hamidouche <wassim.hamidouche@insa-rennes.fr>
Vittorio Giovara <vittorio.giovara@gmail.com>
Jan Ekström <jeebjp@gmail.com>
Anton Khirnov <anton@khirnov.net>
Martin Storsjö <martin@martin.st>
Luca Barbato <lu_zero@gentoo.org>
Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>

Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-10-15 22:13:02 +02:00