/* * Copyright (c) 2012 Andrew D'Addesio * Copyright (c) 2013-2014 Mozilla Corporation * * 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 * Opus decoder/parser shared code */ #include "libavutil/attributes.h" #include "libavutil/channel_layout.h" #include "libavutil/error.h" #include "libavutil/intreadwrite.h" #include "libavutil/log.h" #include "libavutil/mem.h" #include "avcodec.h" #include "internal.h" #include "mathops.h" #include "opus.h" #include "opus_parse.h" #include "vorbis_data.h" static const uint16_t opus_frame_duration[32] = …; /** * Read a 1- or 2-byte frame length */ static inline int xiph_lacing_16bit(const uint8_t **ptr, const uint8_t *end) { … } /** * Read a multi-byte length (used for code 3 packet padding size) */ static inline int xiph_lacing_full(const uint8_t **ptr, const uint8_t *end) { … } /** * Parse Opus packet info from raw packet data */ int ff_opus_parse_packet(OpusPacket *pkt, const uint8_t *buf, int buf_size, int self_delimiting) { … } static int channel_reorder_vorbis(int nb_channels, int channel_idx) { … } static int channel_reorder_unknown(int nb_channels, int channel_idx) { … } av_cold int ff_opus_parse_extradata(AVCodecContext *avctx, OpusParseContext *s) { … }