From 640dbb2e1780a6074b932a455252bb410e4393de Mon Sep 17 00:00:00 2001 From: Sven Gothel Date: Sun, 25 Aug 2013 09:06:11 +0200 Subject: libav/ffmpeg: Move current lavc53.lavf53.lavu51 (version 8) header files to their sub-folders; Add lavc54.lavf54.lavu52 (version 9) header files lavc54.lavf54.lavu52: - Begin testing w/ version 9 - Header files are binary incompatible (data types) Default is still lavc53.lavf53.lavu51 --- .../libav/lavc54.lavf54.lavu52/libavutil/crc.h | 74 ++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 make/stub_includes/libav/lavc54.lavf54.lavu52/libavutil/crc.h (limited to 'make/stub_includes/libav/lavc54.lavf54.lavu52/libavutil/crc.h') diff --git a/make/stub_includes/libav/lavc54.lavf54.lavu52/libavutil/crc.h b/make/stub_includes/libav/lavc54.lavf54.lavu52/libavutil/crc.h new file mode 100644 index 000000000..0540619d2 --- /dev/null +++ b/make/stub_includes/libav/lavc54.lavf54.lavu52/libavutil/crc.h @@ -0,0 +1,74 @@ +/* + * copyright (c) 2006 Michael Niedermayer + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_CRC_H +#define AVUTIL_CRC_H + +#include +#include +#include "attributes.h" + +typedef uint32_t AVCRC; + +typedef enum { + AV_CRC_8_ATM, + AV_CRC_16_ANSI, + AV_CRC_16_CCITT, + AV_CRC_32_IEEE, + AV_CRC_32_IEEE_LE, /*< reversed bitorder version of AV_CRC_32_IEEE */ + AV_CRC_MAX, /*< Not part of public API! Do not use outside libavutil. */ +}AVCRCId; + +/** + * Initialize a CRC table. + * @param ctx must be an array of size sizeof(AVCRC)*257 or sizeof(AVCRC)*1024 + * @param le If 1, the lowest bit represents the coefficient for the highest + * exponent of the corresponding polynomial (both for poly and + * actual CRC). + * If 0, you must swap the CRC parameter and the result of av_crc + * if you need the standard representation (can be simplified in + * most cases to e.g. bswap16): + * av_bswap32(crc << (32-bits)) + * @param bits number of bits for the CRC + * @param poly generator polynomial without the x**bits coefficient, in the + * representation as specified by le + * @param ctx_size size of ctx in bytes + * @return <0 on failure + */ +int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size); + +/** + * Get an initialized standard CRC table. + * @param crc_id ID of a standard CRC + * @return a pointer to the CRC table or NULL on failure + */ +const AVCRC *av_crc_get_table(AVCRCId crc_id); + +/** + * Calculate the CRC of a block. + * @param crc CRC of previous blocks if any or initial value for CRC + * @return CRC updated with the data from the given block + * + * @see av_crc_init() "le" parameter + */ +uint32_t av_crc(const AVCRC *ctx, uint32_t crc, + const uint8_t *buffer, size_t length) av_pure; + +#endif /* AVUTIL_CRC_H */ -- cgit v1.2.3