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FFmpeg
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FFmpeg
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Bytestream IO Context. More...
#include <avio.h>
Data Fields | |
| const AVClass * | av_class |
| A class for private options. | |
| unsigned char * | buffer |
| Start of the buffer. | |
| int | buffer_size |
| Maximum buffer size. | |
| unsigned char * | buf_ptr |
| Current position in the buffer. | |
| unsigned char * | buf_end |
| End of the data, may be less than buffer+buffer_size if the read function returned less data than requested, e.g. | |
| void * | opaque |
| A private pointer, passed to the read/write/seek/... | |
| int(* | read_packet )(void *opaque, uint8_t *buf, int buf_size) |
| int(* | write_packet )(void *opaque, uint8_t *buf, int buf_size) |
| int64_t(* | seek )(void *opaque, int64_t offset, int whence) |
| int64_t | pos |
| position in the file of the current buffer | |
| int | must_flush |
| true if the next seek should flush | |
| int | eof_reached |
| true if eof reached | |
| int | write_flag |
| true if open for writing | |
| int | max_packet_size |
| unsigned long | checksum |
| unsigned char * | checksum_ptr |
| unsigned long(* | update_checksum )(unsigned long checksum, const uint8_t *buf, unsigned int size) |
| int | error |
| contains the error code or 0 if no error happened | |
| int(* | read_pause )(void *opaque, int pause) |
| Pause or resume playback for network streaming protocols - e.g. | |
| int64_t(* | read_seek )(void *opaque, int stream_index, int64_t timestamp, int flags) |
| Seek to a given timestamp in stream with the specified stream_index. | |
| int | seekable |
| A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable. | |
| int64_t | maxsize |
| max filesize, used to limit allocations This field is internal to libavformat and access from outside is not allowed. | |
| int | direct |
| avio_read and avio_write should if possible be satisfied directly instead of going through a buffer, and avio_seek will always call the underlying seek function directly. | |
| int64_t | bytes_read |
| Bytes read statistic This field is internal to libavformat and access from outside is not allowed. | |
| int | seek_count |
| seek statistic This field is internal to libavformat and access from outside is not allowed. | |
Bytestream IO Context.
New fields can be added to the end with minor version bumps. Removal, reordering and changes to existing fields require a major version bump. sizeof(AVIOContext) must not be used outside libav*.
| const AVClass* AVIOContext::av_class |
A class for private options.
If this AVIOContext is created by avio_open2(), av_class is set and passes the options down to protocols.
If this AVIOContext is manually allocated, then av_class may be set by the caller.
warning – this field can be NULL, be sure to not pass this AVIOContext to any av_opt_* functions in that case.
Definition at line 81 of file avio.h.
Referenced by av_probe_input_buffer(), and format_child_next().
| unsigned char* AVIOContext::buffer |
Start of the buffer.
Definition at line 82 of file avio.h.
Referenced by asf_write_trailer(), avio_close(), avio_read(), avio_seek(), close_null_ctx(), ffio_init_context(), ffio_read_partial(), ffio_rewind_with_probe_data(), ffio_set_buf_size(), fill_buffer(), flush_buffer(), free_variant_list(), hls_read_seek(), url_resetbuf(), and wtvfile_close().
| int AVIOContext::buffer_size |
Maximum buffer size.
Definition at line 83 of file avio.h.
Referenced by avio_read(), ff_gen_syncpoint_search(), ffio_init_context(), ffio_rewind_with_probe_data(), ffio_set_buf_size(), ffm_read_data(), fill_buffer(), and url_resetbuf().
| unsigned char* AVIOContext::buf_ptr |
Current position in the buffer.
Definition at line 84 of file avio.h.
Referenced by asf_write_trailer(), avio_r8(), avio_read(), avio_seek(), avio_seek_time(), avio_w8(), avio_write(), ffio_fill(), ffio_get_checksum(), ffio_init_checksum(), ffio_init_context(), ffio_read_partial(), ffio_rewind_with_probe_data(), ffio_set_buf_size(), fill_buffer(), flush_buffer(), hls_read_seek(), mxf_write_content_storage(), mxf_write_identification(), mxf_write_multi_descriptor(), mxf_write_package(), mxf_write_preface(), mxf_write_sequence(), mxf_write_structural_component(), mxf_write_track(), read_gab2_sub(), and rv10_write_header().
| unsigned char* AVIOContext::buf_end |
End of the data, may be less than buffer+buffer_size if the read function returned less data than requested, e.g.
for streams where no more data has been received yet.
Definition at line 85 of file avio.h.
Referenced by avio_r8(), avio_read(), avio_seek(), avio_seek_time(), avio_w8(), avio_write(), ffio_fill(), ffio_init_context(), ffio_read_partial(), ffio_rewind_with_probe_data(), fill_buffer(), hls_read_seek(), init_packetizer(), read_gab2_sub(), and url_resetbuf().
| void* AVIOContext::opaque |
A private pointer, passed to the read/write/seek/...
functions.
Definition at line 89 of file avio.h.
Referenced by avio_close(), avio_close_dyn_buf(), avio_pause(), avio_read(), avio_seek(), avio_seek_time(), avio_size(), ffio_init_context(), ffio_read_partial(), ffio_url_child_next(), fill_buffer(), hls_read_header(), writeout(), and wtvfile_close().
Definition at line 91 of file avio.h.
Referenced by avio_read(), ffio_init_context(), ffio_read_partial(), and fill_buffer().
Definition at line 92 of file avio.h.
Referenced by ffio_init_context(), and writeout().
Definition at line 93 of file avio.h.
Referenced by avio_seek(), avio_seek_time(), avio_size(), ffio_init_context(), and nut_read_header().
| int64_t AVIOContext::pos |
position in the file of the current buffer
Definition at line 94 of file avio.h.
Referenced by asfrtp_parse_packet(), avio_read(), avio_seek(), avio_seek_time(), avio_size(), ffio_init_context(), ffio_read_partial(), ffio_rewind_with_probe_data(), ffm_read_packet(), fill_buffer(), hls_read_seek(), init_packetizer(), and writeout().
| int AVIOContext::must_flush |
true if the next seek should flush
Definition at line 95 of file avio.h.
Referenced by avio_flush(), avio_seek(), ffio_init_context(), and ffio_rewind_with_probe_data().
| int AVIOContext::eof_reached |
true if eof reached
Definition at line 96 of file avio.h.
Referenced by asfrtp_parse_packet(), avio_read(), avio_seek(), bmv_read_packet(), dfa_read_packet(), ff_mov_read_stsd_entries(), ffio_init_context(), ffio_rewind_with_probe_data(), fill_buffer(), gxf_packet(), hls_read_seek(), idcin_read_header(), idcin_read_packet(), mov_read_ctts(), mov_read_sbgp(), mov_read_stco(), mov_read_stps(), mov_read_stsc(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_trun(), new_output_stream(), read_thread(), recheck_discard_flags(), url_feof(), xwma_read_header(), and yuv4_read_packet().
| int AVIOContext::write_flag |
true if open for writing
Definition at line 97 of file avio.h.
Referenced by avio_close(), avio_read(), avio_seek(), ffio_read_partial(), ffio_rewind_with_probe_data(), ffio_set_buf_size(), and url_resetbuf().
| int AVIOContext::max_packet_size |
Definition at line 98 of file avio.h.
Referenced by avio_close_dyn_buf(), ffio_init_context(), fill_buffer(), and rtp_write_header().
| unsigned long AVIOContext::checksum |
Definition at line 99 of file avio.h.
Referenced by ffio_get_checksum(), ffio_init_checksum(), fill_buffer(), and flush_buffer().
| unsigned char* AVIOContext::checksum_ptr |
Definition at line 100 of file avio.h.
Referenced by ffio_get_checksum(), ffio_init_checksum(), fill_buffer(), and flush_buffer().
| unsigned long(* AVIOContext::update_checksum)(unsigned long checksum, const uint8_t *buf, unsigned int size) |
Definition at line 101 of file avio.h.
Referenced by avio_read(), avio_write(), ffio_get_checksum(), ffio_init_checksum(), ffio_init_context(), fill_buffer(), and flush_buffer().
| int AVIOContext::error |
contains the error code or 0 if no error happened
Definition at line 102 of file avio.h.
Referenced by av_interleaved_write_frame(), av_write_frame(), av_write_trailer(), avformat_write_header(), avi_sync(), avio_read(), cin_read_frame_header(), ebml_read_num(), ff_asf_get_packet(), ffio_init_context(), ffio_read_partial(), fill_buffer(), flv_write_packet(), idcin_read_header(), idcin_read_packet(), mxg_read_packet(), read_thread(), writeout(), wtvfile_read_packet(), and yuv4_read_packet().
Pause or resume playback for network streaming protocols - e.g.
MMS.
Definition at line 106 of file avio.h.
Referenced by avio_pause(), and ffio_init_context().
Seek to a given timestamp in stream with the specified stream_index.
Needed for some network streaming protocols which don't support seeking to byte position.
Definition at line 112 of file avio.h.
Referenced by avio_seek_time(), and ffio_init_context().
| int AVIOContext::seekable |
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition at line 117 of file avio.h.
Referenced by aiff_read_header(), aiff_write_trailer(), amf_parse_object(), ape_read_header(), asf_write_header1(), asf_write_trailer(), ast_write_trailer(), avi_read_header(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avio_seek(), caf_write_header(), caf_write_trailer(), estimate_timings(), ff_id3v1_read(), ff_voc_get_packet(), ffio_init_context(), ffm2_read_header(), ffm_read_header(), flac_write_trailer(), flv_read_packet(), gxf_write_header(), hls_read_header(), http_prepare_data(), http_receive_data(), ico_write_header(), matroska_execute_seekhead(), mkv_write_header(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_trailer(), mov_find_next_sample(), mov_read_default(), mov_read_header(), mov_write_header(), mov_write_trailer(), mp3_read_header(), mp3_write_xing(), mpc8_read_header(), mpc_read_header(), mpegps_read_pes_header(), mpegts_read_header(), mv_read_packet(), mv_read_seek(), mxf_parse_handle_essence(), mxf_write_footer(), nut_read_header(), ogg_get_length(), ogg_read_page(), ogg_replace_stream(), put_id3v2_tags(), r3d_read_header(), read_header(), read_seek(), rm_read_header(), rm_write_trailer(), rso_write_header(), rv10_write_header(), smjpeg_write_trailer(), sox_write_trailer(), swf_write_trailer(), tak_read_header(), vc1test_write_trailer(), write_trailer(), wv_read_block_header(), and wv_read_header().
| int64_t AVIOContext::maxsize |
max filesize, used to limit allocations This field is internal to libavformat and access from outside is not allowed.
Definition at line 123 of file avio.h.
Referenced by ffio_limit(), mp3_read_header(), and thp_read_header().
| int AVIOContext::direct |
avio_read and avio_write should if possible be satisfied directly instead of going through a buffer, and avio_seek will always call the underlying seek function directly.
Definition at line 130 of file avio.h.
Referenced by avio_read(), avio_seek(), avio_write(), and ffio_init_context().
| int64_t AVIOContext::bytes_read |
Bytes read statistic This field is internal to libavformat and access from outside is not allowed.
Definition at line 136 of file avio.h.
Referenced by avio_close(), avio_read(), and fill_buffer().
| int AVIOContext::seek_count |
seek statistic This field is internal to libavformat and access from outside is not allowed.
Definition at line 142 of file avio.h.
Referenced by avio_close(), and avio_seek().
1.8.2
