From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- media/ffvpx/libavcodec/flac.h | 75 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 media/ffvpx/libavcodec/flac.h (limited to 'media/ffvpx/libavcodec/flac.h') diff --git a/media/ffvpx/libavcodec/flac.h b/media/ffvpx/libavcodec/flac.h new file mode 100644 index 0000000000..00e631ed20 --- /dev/null +++ b/media/ffvpx/libavcodec/flac.h @@ -0,0 +1,75 @@ +/* + * FLAC (Free Lossless Audio Codec) common stuff + * Copyright (c) 2008 Justin Ruggles + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * FLAC (Free Lossless Audio Codec) common stuff + */ + +#ifndef AVCODEC_FLAC_H +#define AVCODEC_FLAC_H + +#include "libavutil/intreadwrite.h" + +#define FLAC_STREAMINFO_SIZE 34 +#define FLAC_MAX_CHANNELS 8 +#define FLAC_MIN_BLOCKSIZE 16 +#define FLAC_MAX_BLOCKSIZE 65535 +#define FLAC_MIN_FRAME_SIZE 10 + +enum { + FLAC_CHMODE_INDEPENDENT = 0, + FLAC_CHMODE_LEFT_SIDE = 1, + FLAC_CHMODE_RIGHT_SIDE = 2, + FLAC_CHMODE_MID_SIDE = 3, +}; + +enum { + FLAC_METADATA_TYPE_STREAMINFO = 0, + FLAC_METADATA_TYPE_PADDING, + FLAC_METADATA_TYPE_APPLICATION, + FLAC_METADATA_TYPE_SEEKTABLE, + FLAC_METADATA_TYPE_VORBIS_COMMENT, + FLAC_METADATA_TYPE_CUESHEET, + FLAC_METADATA_TYPE_PICTURE, + FLAC_METADATA_TYPE_INVALID = 127 +}; + +/** + * Parse the metadata block parameters from the header. + * @param[in] block_header header data, at least 4 bytes + * @param[out] last indicator for last metadata block + * @param[out] type metadata block type + * @param[out] size metadata block size + */ +static av_always_inline void flac_parse_block_header(const uint8_t *block_header, + int *last, int *type, int *size) +{ + int tmp = *block_header; + if (last) + *last = tmp & 0x80; + if (type) + *type = tmp & 0x7F; + if (size) + *size = AV_RB24(block_header + 1); +} + +#endif /* AVCODEC_FLAC_H */ -- cgit v1.2.3