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FFmpeg
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Functions for querying libavformat capabilities, allocating core structures, etc. More...
Functions | |
| unsigned | avformat_version (void) |
| Return the LIBAVFORMAT_VERSION_INT constant. More... | |
| const char * | avformat_configuration (void) |
| Return the libavformat build-time configuration. More... | |
| const char * | avformat_license (void) |
| Return the libavformat license. More... | |
| void | av_register_all (void) |
| Initialize libavformat and register all the muxers, demuxers and protocols. More... | |
| void | av_register_input_format (AVInputFormat *format) |
| void | av_register_output_format (AVOutputFormat *format) |
| int | avformat_network_init (void) |
| Do global initialization of network components. More... | |
| int | avformat_network_deinit (void) |
| Undo the initialization done by avformat_network_init. More... | |
| AVInputFormat * | av_iformat_next (const AVInputFormat *f) |
| If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registered input format after f or NULL if f is the last one. More... | |
| AVOutputFormat * | av_oformat_next (const AVOutputFormat *f) |
| If f is NULL, returns the first registered output format, if f is non-NULL, returns the next registered output format after f or NULL if f is the last one. More... | |
| AVFormatContext * | avformat_alloc_context (void) |
| Allocate an AVFormatContext. More... | |
| void | avformat_free_context (AVFormatContext *s) |
| Free an AVFormatContext and all its streams. More... | |
| const AVClass * | avformat_get_class (void) |
| Get the AVClass for AVFormatContext. More... | |
| AVStream * | avformat_new_stream (AVFormatContext *s, const AVCodec *c) |
| Add a new stream to a media file. More... | |
| int | av_stream_add_side_data (AVStream *st, enum AVPacketSideDataType type, uint8_t *data, size_t size) |
| Wrap an existing array as stream side data. More... | |
| uint8_t * | av_stream_new_side_data (AVStream *stream, enum AVPacketSideDataType type, int size) |
| Allocate new information from stream. More... | |
| uint8_t * | av_stream_get_side_data (const AVStream *stream, enum AVPacketSideDataType type, int *size) |
| Get side information from stream. More... | |
| AVProgram * | av_new_program (AVFormatContext *s, int id) |
Functions for querying libavformat capabilities, allocating core structures, etc.
| unsigned avformat_version | ( | void | ) |
| const char* avformat_configuration | ( | void | ) |
| const char* avformat_license | ( | void | ) |
Initialize libavformat and register all the muxers, demuxers and protocols.
If you do not call this function, then you can select exactly which formats you want to support.
Definition at line 390 of file allformats.c.
Referenced by ff_load_image(), main(), and movie_common_init().
| void av_register_input_format | ( | AVInputFormat * | format | ) |
| void av_register_output_format | ( | AVOutputFormat * | format | ) |
Do global initialization of network components.
This is optional, but recommended, since it avoids the overhead of implicitly doing the setup for each session.
Calling this function will become mandatory if using network protocols at some major version bump.
Definition at line 4848 of file utils.c.
Referenced by main().
Undo the initialization done by avformat_network_init.
Definition at line 4861 of file utils.c.
Referenced by do_exit(), ffmpeg_cleanup(), and main().
| AVInputFormat* av_iformat_next | ( | const AVInputFormat * | f | ) |
If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registered input format after f or NULL if f is the last one.
Definition at line 45 of file format.c.
Referenced by av_find_input_format(), av_probe_input_format3(), device_next(), ff_img_read_header(), format_child_class_next(), print_times(), probe(), show_format_opts(), and show_formats_devices().
| AVOutputFormat* av_oformat_next | ( | const AVOutputFormat * | f | ) |
If f is NULL, returns the first registered output format, if f is non-NULL, returns the next registered output format after f or NULL if f is the last one.
Definition at line 53 of file format.c.
Referenced by av_guess_format(), device_next(), format_child_class_next(), show_format_opts(), and show_formats_devices().
| AVFormatContext* avformat_alloc_context | ( | void | ) |
Allocate an AVFormatContext.
avformat_free_context() can be used to free the context and everything allocated by the framework within it.
Definition at line 144 of file options.c.
Referenced by avformat_alloc_output_context2(), avformat_open_input(), build_feed_streams(), dash_init(), ff_alloc_input_device_context(), ff_rtp_chain_mux_open(), ff_wms_parse_sdp_a_line(), hds_write_header(), hls_read_header(), http_prepare_data(), http_receive_data(), init_fps(), ism_write_header(), main(), mov_finalize_stsd_codec(), mpegts_init(), open_file(), open_input_file(), open_output_file(), prepare_sdp_description(), rdt_init(), read_ffserver_streams(), read_gab2_sub(), read_thread(), reopen_demux_for_component(), rtp_mpegts_write_header(), rtp_new_av_stream(), and sap_read_header().
| void avformat_free_context | ( | AVFormatContext * | s | ) |
Free an AVFormatContext and all its streams.
| s | context to free |
Definition at line 4302 of file utils.c.
Referenced by avformat_alloc_context(), avformat_alloc_output_context2(), avformat_close_input(), avformat_open_input(), build_feed_streams(), close_slave(), dash_free(), ff_alloc_input_device_context(), ff_mov_close_hinting(), ff_rtp_chain_mux_open(), ff_rtsp_undo_setup(), ffmpeg_cleanup(), fifo_deinit(), finish(), hds_free(), hls_read_header(), hls_write_header(), hls_write_trailer(), ism_free(), list_devices_for_context(), main(), mov_read_close(), mpegts_deinit(), open_output_file(), reopen_demux_for_component(), rtp_mpegts_write_close(), rtp_mpegts_write_header(), run_test(), sap_write_close(), seg_free(), seg_write_trailer(), segment_start(), webm_chunk_write_trailer(), and write_packet().
Get the AVClass for AVFormatContext.
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
Definition at line 168 of file options.c.
Referenced by open_input_file(), open_output_file(), opt_default(), show_format_opts(), and show_help_default().
| AVStream* avformat_new_stream | ( | AVFormatContext * | s, |
| const AVCodec * | c | ||
| ) |
Add a new stream to a media file.
When demuxing, it is called by the demuxer in read_header(). If the flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also be called in read_packet().
When muxing, should be called by the user before avformat_write_header().
User is required to call avcodec_close() and avformat_free_context() to clean up the allocation by avformat_new_stream().
| s | media file handle |
| c | If non-NULL, the AVCodecContext corresponding to the new stream will be initialized to use this codec. This is needed for e.g. codec-specific defaults to be set, so codec should be provided if it is known. |
Definition at line 4367 of file utils.c.
Referenced by aa_read_header(), acm_read_header(), add_dstream(), add_stream(), adp_read_header(), ads_read_header(), adts_aac_read_header(), adx_read_header(), aea_read_header(), afc_read_header(), aiff_read_header(), aix_read_header(), amr_read_header(), apc_read_header(), ape_read_header(), ape_tag_read_field(), apng_read_header(), aqt_read_header(), asf_read_picture(), asf_read_stream_properties(), ass_read_header(), ast_read_header(), audio_read_header(), avi_read_header(), avisynth_create_stream(), avpriv_dv_init_demux(), avr_read_header(), avs_read_packet(), bfi_read_header(), bmv_read_header(), build_feed_streams(), cdata_read_header(), cdxl_read_packet(), cin_read_header(), cine_read_header(), concat_read_header(), create_audio_stream(), create_new_audio_stream(), create_stream(), create_subcc_streams(), dash_init(), daud_header(), dc1394_read_common(), dcstr_read_header(), decode_main_header(), dfa_read_header(), dsf_read_header(), dshow_add_device(), dss_read_header(), dtshd_read_header(), dv_extract_audio_info(), dxa_read_header(), ea_read_header(), epaf_read_header(), fbdev_read_header(), ff_decklink_read_header(), ff_flac_parse_picture(), ff_id3v2_parse_apic(), ff_img_read_header(), ff_raw_audio_read_header(), ff_raw_data_read_header(), ff_raw_video_read_header(), ff_rtp_chain_mux_open(), ff_spdif_read_packet(), ffm2_read_header(), ffm_read_header(), fifo_mux_init(), film_read_header(), fits_read_header(), flac_read_header(), flic_read_header(), frm_read_header(), fsb_read_header(), g722_read_header(), g723_1_init(), g726_read_header(), g729_read_header(), gdigrab_read_header(), gdv_read_header(), genh_read_header(), get_attachment(), get_audio_config(), get_sindex(), get_video_config(), gif_read_header(), grab_read_header(), gsm_read_header(), hds_write_header(), hls_mux_init(), hnm_read_header(), http_prepare_data(), idcin_read_header(), iec61883_read_header(), iff_read_header(), ilbc_read_header(), init_audio(), init_fps(), init_stream(), init_video_stream(), initialize_fifo_tst_muxer_chain(), ipmovie_read_header(), ircam_read_header(), ism_write_header(), iss_read_header(), ivr_read_header(), jacosub_read_header(), kmsgrab_read_header(), lavfi_read_header(), lmlm4_read_header(), loas_read_header(), lrc_read_header(), lvf_read_header(), lxf_read_header(), main(), match_streams_one_to_one(), matroska_parse_tracks(), matroska_read_header(), microdvd_read_header(), mmf_read_header(), modplug_read_header(), mov_read_covr(), mov_read_trak(), mp3_read_header(), mpc8_read_header(), mpc_read_header(), mpegps_read_packet(), mpegts_init(), mpegts_push_data(), 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_add_metadata_stream(), mxf_parse_structural_metadata(), mxg_read_header(), nc_read_header(), ndi_create_audio_stream(), ndi_create_video_stream(), new_output_stream(), new_stream(), nist_read_header(), nsv_parse_NSVs_header(), nuv_header(), ogg_new_stream(), oma_read_header(), open_demux_for_component(), open_output_file(), open_slave(), parse_strk(), parse_vtrk(), pcm_read_header(), pjs_read_header(), pmp_header(), pmt_cb(), prepare_sdp_description(), pulse_read_header(), pva_read_header(), pvf_read_header(), qcp_read_header(), r3d_read_red1(), r3d_read_reda(), rawvideo_read_header(), read_desc_chunk(), read_frame(), read_header(), read_header_gme(), read_header_openmpt(), read_packet(), realtext_read_header(), redspark_read_header(), rl2_read_header(), rm_read_header(), rm_read_header_old(), rm_read_multi(), roq_read_packet(), rpl_read_header(), rsd_read_header(), rso_read_header(), rtp_mpegts_write_header(), rtp_new_av_stream(), s337m_read_packet(), sami_read_header(), sap_fetch_packet(), sap_read_header(), sbg_read_header(), scc_read_header(), sdr2_read_header(), sds_read_header(), sdx_read_header(), segment_mux_init(), seq_read_header(), siff_parse_vbv1(), smacker_read_header(), smjpeg_read_header(), smush_read_header(), sol_read_header(), sox_read_header(), srt_read_header(), stl_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sup_read_header(), svag_read_header(), swf_read_packet(), tak_read_header(), tedcaptions_read_header(), thp_read_header(), threedostr_read_header(), tmv_read_header(), tta_read_header(), txd_read_header(), update_streams_from_subdemuxer(), v210_read_header(), v4l2_read_header(), vag_read_header(), vc1t_read_header(), vfw_read_header(), vid_read_packet(), vivo_read_header(), vmd_read_header(), voc_read_packet(), vpk_read_header(), vplayer_read_header(), vqf_read_header(), wc3_read_header(), webvtt_read_header(), write_packet(), wsaud_read_header(), wsd_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), wve_read_header(), xa_read_header(), xmv_process_packet_header(), xvag_read_header(), xwma_read_header(), yop_read_header(), and yuv4_read_header().
| int av_stream_add_side_data | ( | AVStream * | st, |
| enum AVPacketSideDataType | type, | ||
| uint8_t * | data, | ||
| size_t | size | ||
| ) |
Wrap an existing array as stream side data.
| st | stream |
| type | side information type |
| data | the side data array. It must be allocated with the av_malloc() family of functions. The ownership of the data is transferred to st. |
| size | side information size |
Definition at line 5270 of file utils.c.
Referenced by av_stream_new_side_data(), ff_mkv_stereo3d_conv(), mkv_parse_video_color(), mkv_parse_video_projection(), and mov_read_header().
| uint8_t* av_stream_new_side_data | ( | AVStream * | stream, |
| enum AVPacketSideDataType | type, | ||
| int | size | ||
| ) |
Allocate new information from stream.
| stream | stream |
| type | desired side information type |
| size | side information size |
Definition at line 5306 of file utils.c.
Referenced by ff_replaygain_export_raw(), init_output_stream(), mkv_parse_video_color(), mov_read_dac3(), and mov_read_dec3().
| uint8_t* av_stream_get_side_data | ( | const AVStream * | stream, |
| enum AVPacketSideDataType | type, | ||
| int * | size | ||
| ) |
Get side information from stream.
| stream | stream |
| type | desired side information type |
| size | pointer for side information size to store (optional) |
Definition at line 5254 of file utils.c.
Referenced by get_rotation(), mkv_write_video_color(), mkv_write_video_projection(), mov_write_esds_tag(), mov_write_isml_manifest(), mov_write_moov_tag(), mov_write_tkhd_tag(), mov_write_video_tag(), mp3_update_xing(), and mpeg_mux_init().
| AVProgram* av_new_program | ( | AVFormatContext * | s, |
| int | id | ||
| ) |
Definition at line 4466 of file utils.c.
Referenced by dash_read_header(), hls_read_header(), open_output_file(), pat_cb(), and sdt_cb().
1.8.6
