/* * 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 */ /* * APIs internal to the generic avformat layer. * * MUST NOT be included by individual muxers or demuxers. */ #ifndef AVFORMAT_AVFORMAT_INTERNAL_H#define AVFORMAT_AVFORMAT_INTERNAL_H #include <stdint.h> #include "avformat.h"#include "internal.h" typedef struct FormatContextInternal {    FFFormatContext fc;     union {        // muxing only        struct {            /**             * Whether or not avformat_init_output has already been called             */            int initialized;             /**             * Whether or not avformat_init_output fully initialized streams             */            int streams_initialized;              /**             * Number of streams relevant for interleaving.             * Muxing only.             */            int nb_interleaved_streams;             /**             * The interleavement function in use. Always set.             */            int (*interleave_packet)(struct AVFormatContext *s, AVPacket *pkt,                                     int flush, int has_packet); #if FF_API_COMPUTE_PKT_FIELDS2            int missing_ts_warning;#endif        };         // demuxing only        struct {            /**             * Raw packets from the demuxer, prior to parsing and decoding.             * This buffer is used for buffering packets until the codec can             * be identified, as parsing cannot be done without knowing the             * codec.             */            PacketList raw_packet_buffer;             /**             * Sum of the size of packets in raw_packet_buffer, in bytes.             */            int raw_packet_buffer_size;             /**             * Packets split by the parser get queued here.             */            PacketList parse_queue;             /**             * Contexts and child contexts do not contain a metadata option             */            int metafree;             /**             * Set if chapter ids are strictly monotonic.             */            int chapter_ids_monotonic;        };    }; #if FF_API_LAVF_SHORTEST    /**     * Timestamp of the end of the shortest stream.     */    int64_t shortest_end;#endif} FormatContextInternal; static av_always_inline FormatContextInternal *ff_fc_internal(AVFormatContext *s){    return (FormatContextInternal*)s;} #define RELATIVE_TS_BASE (INT64_MAX - (1LL << 48)) static av_always_inline int is_relative(int64_t ts){    return ts > (RELATIVE_TS_BASE - (1LL << 48));} /** * Wrap a given time stamp, if there is an indication for an overflow * * @param st stream * @param timestamp the time stamp to wrap * @return resulting time stamp */int64_t ff_wrap_timestamp(const AVStream *st, int64_t timestamp); typedef struct FFStreamGroup {    /**     * The public context.     */    AVStreamGroup pub;     AVFormatContext *fmtctx;} FFStreamGroup; static av_always_inline FFStreamGroup *ffstreamgroup(AVStreamGroup *stg){    return (FFStreamGroup*)stg;} static av_always_inline const FFStreamGroup *cffstreamgroup(const AVStreamGroup *stg){    return (const FFStreamGroup*)stg;} void ff_flush_packet_queue(AVFormatContext *s); const struct AVCodec *ff_find_decoder(AVFormatContext *s, const AVStream *st,                                      enum AVCodecID codec_id); /** * Frees a stream without modifying the corresponding AVFormatContext. * Must only be called if the latter doesn't matter or if the stream * is not yet attached to an AVFormatContext. */void ff_free_stream(AVStream **st); /** * Frees a stream group without modifying the corresponding AVFormatContext. * Must only be called if the latter doesn't matter or if the stream * is not yet attached to an AVFormatContext. */void ff_free_stream_group(AVStreamGroup **pstg); int ff_is_intra_only(enum AVCodecID id); struct FFOutputFormat;struct FFInputFormat;void avpriv_register_devices(const struct FFOutputFormat * const o[],                             const struct FFInputFormat * const i[]); #endif // AVFORMAT_AVFORMAT_INTERNAL_H