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| author | Guillaume Martres <smarter@ubuntu.com> | 2013-10-12 11:55:48 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-10-15 22:13:02 +0200 |
| commit | c8dd048ab8cff815c9f4b16a62db0b74df011f0a (patch) | |
| tree | e9167d50e3b802a195b6fcfb4c042332f0d2b469 /libavcodec/cabac_functions.h | |
| parent | 2a19fcc12311f71f55eab7129b764d4cb800c934 (diff) | |
| download | ffmpeg-c8dd048ab8cff815c9f4b16a62db0b74df011f0a.tar.gz | |
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>
Diffstat (limited to 'libavcodec/cabac_functions.h')
| -rw-r--r-- | libavcodec/cabac_functions.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libavcodec/cabac_functions.h b/libavcodec/cabac_functions.h index 8a7275d9de..b84258bfa7 100644 --- a/libavcodec/cabac_functions.h +++ b/libavcodec/cabac_functions.h @@ -160,4 +160,24 @@ static int av_unused get_cabac_terminate(CABACContext *c){ } } +/** + * Skip @p n bytes and reset the decoder. + * @return the address of the first skipped byte or NULL if there's less than @p n bytes left + */ +static av_unused const uint8_t* skip_bytes(CABACContext *c, int n) { + const uint8_t *ptr = c->bytestream; + + if (c->low & 0x1) + ptr--; +#if CABAC_BITS == 16 + if (c->low & 0x1FF) + ptr--; +#endif + if ((int) (c->bytestream_end - ptr) < n) + return NULL; + ff_init_cabac_decoder(c, ptr + n, c->bytestream_end - ptr - n); + + return ptr; +} + #endif /* AVCODEC_CABAC_FUNCTIONS_H */ |