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FFmpeg
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#include <math.h>#include "libavutil/avassert.h"#include "libavutil/avstring.h"#include "libavutil/channel_layout.h"#include "libavutil/frame.h"#include "libavutil/iamf.h"#include "libavutil/intreadwrite.h"#include "libavutil/mem.h"#include "libavutil/opt.h"#include "libavutil/pixfmt.h"#include "libavutil/samplefmt.h"#include "libavcodec/avcodec.h"#include "libavcodec/codec.h"#include "libavcodec/bsf.h"#include "libavcodec/codec_desc.h"#include "libavcodec/packet_internal.h"#include "avformat.h"#include "avio.h"#include "demux.h"#include "mux.h"#include "internal.h"Go to the source code of this file.
Macros | |
| #define | OFF(field) offsetof(AVFormatContext, field) |
Functions | |
| void | ff_free_stream (AVStream **pst) |
| Frees a stream without modifying the corresponding AVFormatContext. More... | |
| void | ff_free_stream_group (AVStreamGroup **pstg) |
| Frees a stream group without modifying the corresponding AVFormatContext. More... | |
| void | ff_remove_stream (AVFormatContext *s, AVStream *st) |
| Remove a stream from its AVFormatContext and free it. More... | |
| void | ff_remove_stream_group (AVFormatContext *s, AVStreamGroup *stg) |
| Remove a stream group from its AVFormatContext and free it. More... | |
| void | ff_flush_packet_queue (AVFormatContext *s) |
| void | avformat_free_context (AVFormatContext *s) |
| Free an AVFormatContext and all its streams. More... | |
| static int | stream_params_copy (AVStream *dst, const AVStream *src) |
| Copy all stream parameters from source to destination stream, with the exception of the index field, which is usually set by avformat_new_stream(). More... | |
| AVStream * | ff_stream_clone (AVFormatContext *dst_ctx, const AVStream *src) |
| Create a new stream and copy to it all parameters from a source stream, with the exception of the index field, which is set when the new stream is created. More... | |
| const char * | avformat_stream_group_name (enum AVStreamGroupParamsType type) |
| AVProgram * | av_new_program (AVFormatContext *ac, int id) |
| void | av_program_add_stream_index (AVFormatContext *ac, int progid, unsigned idx) |
| AVProgram * | av_find_program_from_stream (AVFormatContext *ic, AVProgram *last, int s) |
| Find the programs which belong to a given stream. More... | |
| int | av_find_default_stream_index (AVFormatContext *s) |
| int | av_find_best_stream (AVFormatContext *ic, enum AVMediaType type, int wanted_stream_nb, int related_stream, const AVCodec **decoder_ret, int flags) |
| static int | match_stream_specifier (const AVFormatContext *s, const AVStream *st, const char *spec, const char **indexptr, const AVStreamGroup **g, const AVProgram **p) |
| Matches a stream specifier (but ignores requested index). More... | |
| int | avformat_match_stream_specifier (AVFormatContext *s, AVStream *st, const char *spec) |
| Check if the stream st contained in s is matched by the stream specifier spec. More... | |
| AVRational | av_guess_sample_aspect_ratio (AVFormatContext *format, AVStream *stream, AVFrame *frame) |
| Guess the sample aspect ratio of a frame, based on both the stream and the frame aspect ratio. More... | |
| AVRational | av_guess_frame_rate (AVFormatContext *format, AVStream *st, AVFrame *frame) |
| Guess the frame rate, based on both the container and codec information. More... | |
| int | avformat_transfer_internal_stream_timing_info (const AVOutputFormat *ofmt, AVStream *ost, const AVStream *ist, enum AVTimebaseSource copy_tb) |
| Transfer internal timing information from one stream to another. More... | |
| AVRational | av_stream_get_codec_timebase (const AVStream *st) |
| Get the internal codec timebase from a stream. More... | |
| void | avpriv_set_pts_info (AVStream *st, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den) |
| Set the time base and wrapping info for a given stream. More... | |
| const AVCodec * | ff_find_decoder (AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id) |
| int | ff_copy_whiteblacklists (AVFormatContext *dst, const AVFormatContext *src) |
| Copies the whilelists from one context to the other. More... | |
| int | ff_is_intra_only (enum AVCodecID id) |
| void | ff_format_set_url (AVFormatContext *s, char *url) |
| Set AVFormatContext url field to the provided pointer. More... | |
| int | ff_format_io_close (AVFormatContext *s, AVIOContext **pb) |
| #define OFF | ( | field | ) | offsetof(AVFormatContext, field) |
| void ff_free_stream | ( | AVStream ** | st | ) |
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.
Definition at line 44 of file avformat.c.
Referenced by avformat_free_context(), avformat_new_stream(), and ff_remove_stream().
| void ff_free_stream_group | ( | AVStreamGroup ** | pstg | ) |
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.
Definition at line 83 of file avformat.c.
Referenced by avformat_free_context(), avformat_stream_group_create(), and ff_remove_stream_group().
| void ff_remove_stream | ( | AVFormatContext * | s, |
| AVStream * | st | ||
| ) |
Remove a stream from its AVFormatContext and free it.
The stream must be the last stream of the AVFormatContext.
Definition at line 114 of file avformat.c.
Referenced by avi_read_header(), ff_add_attached_pic(), ff_rm_read_mdpr_codecdata(), and ff_stream_clone().
| void ff_remove_stream_group | ( | AVFormatContext * | s, |
| AVStreamGroup * | stg | ||
| ) |
Remove a stream group from its AVFormatContext and free it.
The stream group must be the last stream group of the AVFormatContext.
Definition at line 122 of file avformat.c.
Referenced by mov_parse_tiles().
| void ff_flush_packet_queue | ( | AVFormatContext * | s | ) |
Definition at line 131 of file avformat.c.
Referenced by avformat_free_context(), estimate_timings_from_pts(), and ff_read_frame_flush().
Copy all stream parameters from source to destination stream, with the exception of the index field, which is usually set by avformat_new_stream().
Definition at line 270 of file avformat.c.
Referenced by ff_stream_clone().
| AVStream* ff_stream_clone | ( | AVFormatContext * | dst_ctx, |
| const AVStream * | src | ||
| ) |
Create a new stream and copy to it all parameters from a source stream, with the exception of the index field, which is set when the new stream is created.
| dst_ctx | pointer to the context in which the new stream is created |
| src | pointer to source AVStream |
Definition at line 306 of file avformat.c.
Referenced by fifo_mux_init(), open_slave(), segment_mux_init(), set_context_streams_from_tracks(), and webm_chunk_init().
| void av_program_add_stream_index | ( | AVFormatContext * | ac, |
| int | progid, | ||
| unsigned | idx | ||
| ) |
Definition at line 365 of file avformat.c.
Referenced by add_stream_to_programs(), dash_read_header(), of_add_programs(), and pmt_cb().
| int av_find_best_stream | ( | AVFormatContext * | ic, |
| enum AVMediaType | type, | ||
| int | wanted_stream_nb, | ||
| int | related_stream, | ||
| const AVCodec ** | decoder_ret, | ||
| int | flags | ||
| ) |
Definition at line 443 of file avformat.c.
Referenced by find_stream(), main(), open_codec_context(), open_input_file(), read_thread(), seek_test(), video_decode(), and video_decode_example().
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static |
Matches a stream specifier (but ignores requested index).
| indexptr | set to point to the requested stream index if there is one |
Definition at line 518 of file avformat.c.
Referenced by avformat_match_stream_specifier().
| void avpriv_set_pts_info | ( | AVStream * | st, |
| int | pts_wrap_bits, | ||
| unsigned int | pts_num, | ||
| unsigned int | pts_den | ||
| ) |
Set the time base and wrapping info for a given stream.
This will be used to interpret the stream's timestamps. If the new time base is invalid (numerator or denominator are non-positive), it leaves the stream unchanged.
| st | stream |
| pts_wrap_bits | number of bits effectively used by the pts (used for wrap control) |
| pts_num | time base numerator |
| pts_den | time base denominator |
Definition at line 853 of file avformat.c.
Referenced by aa_read_header(), aax_read_header(), ace_read_header(), acm_read_header(), add_video_stream(), adp_read_header(), ads_read_header(), adts_aac_read_header(), adx_read_header(), aea_read_header(), afc_read_header(), aiff_read_header(), aiff_write_header(), aix_read_header(), apac_read_header(), ape_read_header(), apng_read_header(), aqt_read_header(), argo_brp_read_header(), asf_read_stream_properties(), asf_write_header1(), asfrtp_parse_sdp_line(), ass_read_header(), ast_read_header(), audio_read_header(), audio_write_header(), av1_read_header(), avformat_new_stream(), avi_read_header(), avi_write_header(), avisynth_create_stream_audio(), avisynth_create_stream_video(), avr_read_header(), bfi_read_header(), binka_read_header(), bmv_read_header(), bonk_read_header(), cdata_read_header(), cdxl_read_packet(), celt_header(), cin_read_header(), cine_read_header(), codec2_read_header_common(), copy_stream_props(), create_audio_stream(), create_new_audio_stream(), create_stream(), dat_read_packet(), daud_header(), dc1394_read_common(), dcstr_read_header(), decklink_setup_audio(), decklink_setup_video(), decode_stream_header(), derf_read_header(), dfa_read_header(), dfpwm_read_header(), dhav_read_packet(), dirac_header(), dsf_read_header(), dshow_add_device(), dss_read_header(), dtshd_read_header(), dvdvideo_audio_stream_add(), dvdvideo_subp_stream_add(), dvdvideo_video_stream_add(), dxa_read_header(), ea_read_header(), epaf_read_header(), evc_read_header(), fbdev_read_header(), ff_argo_asf_fill_stream(), ff_decklink_read_header(), ff_decklink_write_header(), ff_img_read_header(), ff_raw_video_read_header(), ff_rm_read_mdpr_codecdata(), ff_voc_get_packet(), film_read_header(), fits_read_header(), flac_header(), flac_read_header(), flv_init(), fsb_read_header(), fwse_read_header(), g722_read_header(), g723_1_init(), g729_read_header(), gdigrab_read_header(), gdv_read_header(), genh_read_header(), get_audio_config(), get_packet_header(), get_video_config(), gif_init(), gif_read_header(), grab_read_header(), gsm_read_header(), gxf_header(), gxf_write_header(), hca_read_header(), hcom_read_header(), hls_write_header(), hnm_read_header(), iamf_read_header(), idcin_read_header(), iff_read_header(), ifv_read_header(), ilbc_read_header(), init_audio(), init_muxer(), init_stream(), init_video_stream(), ipmovie_read_header(), ipu_read_header(), ircam_read_header(), iss_read_header(), jacosub_read_header(), jpegxl_anim_read_header(), kmsgrab_read_header(), laf_read_header(), lavfi_read_header(), lmlm4_read_header(), loas_read_header(), lrc_read_header(), lrc_write_header(), lvf_read_header(), lxf_read_header(), mcc_read_header(), microdvd_read_header(), microdvd_write_header(), mkv_init(), mlp_read_header(), mmf_read_header(), modplug_read_header(), mods_read_header(), moflex_read_sync(), mov_init(), mov_read_trak(), mp3_read_header(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpegts_init(), mpegts_read_header(), mpegts_set_stream_info(), mpjpeg_read_header(), mpl2_read_header(), mpsub_read_header(), msf_read_header(), msnwc_tcp_read_header(), mtaf_read_header(), mtv_read_header(), musx_read_header(), mv_read_header(), mxf_init(), mxf_parse_structural_metadata(), mxg_read_header(), nc_read_header(), new_stream(), nist_read_header(), nsv_parse_NSVs_header(), nut_write_header(), nuv_header(), ogg_build_vp8_headers(), ogg_init(), ogg_new_stream(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_header(), open_demux_for_component(), opus_header(), osq_read_header(), parse_audio_var(), parse_chunk(), parse_strk(), parse_video_var(), parse_vtrk(), pcm_read_header(), pdv_read_header(), pjs_read_header(), pmp_header(), pp_bnk_read_header(), pulse_read_header(), pulse_write_header(), pva_read_header(), pvf_read_header(), qoa_read_header(), qt_rtp_parse_packet(), r3d_read_red1(), r3d_read_reda(), rawvideo_read_header(), rcwt_read_header(), rcwt_write_header(), read_frame(), read_gab2_sub(), read_header(), read_header_gme(), read_header_openmpt(), read_header_vs(), read_sl_header(), realtext_read_header(), redspark_read_header(), rka_read_header(), rl2_read_header(), roq_read_packet(), rpl_read_header(), rsd_read_header(), rso_read_header(), rtp_write_header(), sami_read_header(), sbg_read_header(), scc_read_header(), scc_write_header(), scd_read_track(), sdns_read_header(), sdr2_read_header(), sds_read_header(), seg_init(), seq_read_header(), ser_read_header(), set_context_streams_from_tracks(), set_stream_info_from_input_stream(), sga_audio_packet(), sga_video_packet(), siff_parse_vbv1(), simbiosis_imx_read_header(), skeleton_header(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), smush_read_header(), sol_read_header(), sox_read_header(), speex_header(), srt_read_header(), srt_write_header(), stl_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sup_init(), sup_read_header(), svag_read_header(), svs_read_header(), swf_read_packet(), tak_read_header(), tedcaptions_read_header(), theora_header(), thp_read_header(), threedostr_read_header(), tmv_read_header(), track_header(), tta_init(), tta_read_header(), ttml_write_header(), txd_read_header(), ty_read_header(), v4l2_read_header(), vag_read_header(), vc1t_read_header(), vc1test_write_header(), vfw_read_header(), vid_read_packet(), vivo_read_header(), vmd_read_header(), vorbis_header(), vp8_header(), vpk_read_header(), vplayer_read_header(), vqf_read_header(), wady_read_header(), wavarc_read_header(), wc3_read_header(), webm_chunk_init(), webp_init(), webvtt_read_header(), webvtt_write_header(), write_header(), write_stream_data(), wsaud_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), wve_read_header(), xa_read_header(), xmd_read_header(), xmv_process_packet_header(), xvag_read_header(), xwma_read_header(), yop_read_header(), and yuv4_read_header().
| const AVCodec* ff_find_decoder | ( | AVFormatContext * | s, |
| const AVStream * | st, | ||
| enum AVCodecID | codec_id | ||
| ) |
Definition at line 880 of file avformat.c.
Referenced by av_find_best_stream(), and find_probe_decoder().
| int ff_copy_whiteblacklists | ( | AVFormatContext * | dst, |
| const AVFormatContext * | src | ||
| ) |
Copies the whilelists from one context to the other.
Definition at line 898 of file avformat.c.
Referenced by dvdvideo_subdemux_open(), ff_wms_parse_sdp_a_line(), hls_read_header(), ism_write_header(), open_file(), open_track_resource_context(), rdt_init(), read_gab2_sub(), reopen_demux_for_component(), and sap_read_header().
Definition at line 926 of file avformat.c.
Referenced by compute_pkt_fields(), and init_muxer().
| void ff_format_set_url | ( | AVFormatContext * | s, |
| char * | url | ||
| ) |
Set AVFormatContext url field to the provided pointer.
The pointer must point to a valid string. The existing url field is freed if necessary. Also set the legacy filename field to the same string which was provided in url.
Definition at line 937 of file avformat.c.
Referenced by hls_start(), parse_playlist(), sap_write_header(), set_segment_filename(), sls_flag_use_localtime_filename(), sls_flags_filename_process(), and webm_chunk_init().
| int ff_format_io_close | ( | AVFormatContext * | s, |
| AVIOContext ** | pb | ||
| ) |
Definition at line 944 of file avformat.c.
Referenced by chunk_end(), close_file(), close_slave(), copy_moof(), dash_free(), dash_read_packet(), dash_seek(), dashenc_io_close(), dashenc_io_open(), ff_format_shift_data(), ff_img_read_packet(), fifo_thread_write_trailer(), find_index_range(), free_playlist_list(), free_representation(), hds_free(), hls_close(), hls_deinit(), hls_encryption_start(), hls_read_header(), hls_read_seek(), hls_write_packet(), hls_write_trailer(), hlsenc_io_close(), hlsenc_io_open(), mov_free_stream_context(), open_input(), open_url_keepalive(), parse_assetmap(), parse_fragment(), parse_playlist(), read_close(), read_data(), read_header(), recheck_discard_flags(), seg_free(), seg_write_header(), segment_end(), update_init_section(), webm_chunk_deinit(), webm_chunk_write_header(), write_abst(), write_and_close(), write_manifest(), and write_packet().
1.8.17