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<a href="#pub-attribs">Data Fields</a> </div>
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<div class="title">AVIOContext Struct Reference</div> </div>
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<p>Bytestream IO Context.
<a href="structAVIOContext.html#details">More...</a></p>
<p><code>#include <<a class="el" href="avio_8h_source.html">libavformat/avio.h</a>></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:a25d3b039ac00850a25d7b772566db6a8"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="structAVClass.html">AVClass</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a25d3b039ac00850a25d7b772566db6a8">av_class</a></td></tr>
<tr class="memdesc:a25d3b039ac00850a25d7b772566db6a8"><td class="mdescLeft"> </td><td class="mdescRight">A class for private options. <a href="#a25d3b039ac00850a25d7b772566db6a8">More...</a><br /></td></tr>
<tr class="separator:a25d3b039ac00850a25d7b772566db6a8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a901e8fd2b978d40957c4ed0b77c2daf0"><td class="memItemLeft" align="right" valign="top">unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a901e8fd2b978d40957c4ed0b77c2daf0">buffer</a></td></tr>
<tr class="memdesc:a901e8fd2b978d40957c4ed0b77c2daf0"><td class="mdescLeft"> </td><td class="mdescRight">Start of the buffer. <a href="#a901e8fd2b978d40957c4ed0b77c2daf0">More...</a><br /></td></tr>
<tr class="separator:a901e8fd2b978d40957c4ed0b77c2daf0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0204148f407d72becba822b90e8ce9a6"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a0204148f407d72becba822b90e8ce9a6">buffer_size</a></td></tr>
<tr class="memdesc:a0204148f407d72becba822b90e8ce9a6"><td class="mdescLeft"> </td><td class="mdescRight">Maximum buffer size. <a href="#a0204148f407d72becba822b90e8ce9a6">More...</a><br /></td></tr>
<tr class="separator:a0204148f407d72becba822b90e8ce9a6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3500915a7434270c42dffc80fafffa2d"><td class="memItemLeft" align="right" valign="top">unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a3500915a7434270c42dffc80fafffa2d">buf_ptr</a></td></tr>
<tr class="memdesc:a3500915a7434270c42dffc80fafffa2d"><td class="mdescLeft"> </td><td class="mdescRight">Current position in the buffer. <a href="#a3500915a7434270c42dffc80fafffa2d">More...</a><br /></td></tr>
<tr class="separator:a3500915a7434270c42dffc80fafffa2d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0683d1a134b647c54f6d087d152c9a64"><td class="memItemLeft" align="right" valign="top">unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a0683d1a134b647c54f6d087d152c9a64">buf_end</a></td></tr>
<tr class="memdesc:a0683d1a134b647c54f6d087d152c9a64"><td class="mdescLeft"> </td><td class="mdescRight">End of the data, may be less than buffer+buffer_size if the read function returned less data than requested, e.g. <a href="#a0683d1a134b647c54f6d087d152c9a64">More...</a><br /></td></tr>
<tr class="separator:a0683d1a134b647c54f6d087d152c9a64"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afa97c079a10a48588f7b55f9dfff1e47"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a></td></tr>
<tr class="memdesc:afa97c079a10a48588f7b55f9dfff1e47"><td class="mdescLeft"> </td><td class="mdescRight">A private pointer, passed to the read/write/seek/... <a href="#afa97c079a10a48588f7b55f9dfff1e47">More...</a><br /></td></tr>
<tr class="separator:afa97c079a10a48588f7b55f9dfff1e47"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9be0423e0c66d11d8e0ace043e3aec08"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a9be0423e0c66d11d8e0ace043e3aec08">read_packet</a> )(void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, uint8_t *buf, int buf_size)</td></tr>
<tr class="separator:a9be0423e0c66d11d8e0ace043e3aec08"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afb1f05f0e4e957090ccc23f0b82a0b08"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#afb1f05f0e4e957090ccc23f0b82a0b08">write_packet</a> )(void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, uint8_t *buf, int buf_size)</td></tr>
<tr class="separator:afb1f05f0e4e957090ccc23f0b82a0b08"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4cda0cd632c90d13a546f663287e6cf5"><td class="memItemLeft" align="right" valign="top">int64_t(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a4cda0cd632c90d13a546f663287e6cf5">seek</a> )(void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, int64_t offset, int whence)</td></tr>
<tr class="separator:a4cda0cd632c90d13a546f663287e6cf5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7158ec9b44d75704ea5c2fa5ac28fd50"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a7158ec9b44d75704ea5c2fa5ac28fd50">pos</a></td></tr>
<tr class="memdesc:a7158ec9b44d75704ea5c2fa5ac28fd50"><td class="mdescLeft"> </td><td class="mdescRight">position in the file of the current buffer <a href="#a7158ec9b44d75704ea5c2fa5ac28fd50">More...</a><br /></td></tr>
<tr class="separator:a7158ec9b44d75704ea5c2fa5ac28fd50"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a06e6f0186fcf571355cee82e837dc339"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a06e6f0186fcf571355cee82e837dc339">must_flush</a></td></tr>
<tr class="memdesc:a06e6f0186fcf571355cee82e837dc339"><td class="mdescLeft"> </td><td class="mdescRight">unused <a href="#a06e6f0186fcf571355cee82e837dc339">More...</a><br /></td></tr>
<tr class="separator:a06e6f0186fcf571355cee82e837dc339"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa9214f54c01f07076e0a0718b2e9c27b"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#aa9214f54c01f07076e0a0718b2e9c27b">eof_reached</a></td></tr>
<tr class="memdesc:aa9214f54c01f07076e0a0718b2e9c27b"><td class="mdescLeft"> </td><td class="mdescRight">true if eof reached <a href="#aa9214f54c01f07076e0a0718b2e9c27b">More...</a><br /></td></tr>
<tr class="separator:aa9214f54c01f07076e0a0718b2e9c27b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aab6ff8baf51038f1557e817717baccba"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#aab6ff8baf51038f1557e817717baccba">write_flag</a></td></tr>
<tr class="memdesc:aab6ff8baf51038f1557e817717baccba"><td class="mdescLeft"> </td><td class="mdescRight">true if open for writing <a href="#aab6ff8baf51038f1557e817717baccba">More...</a><br /></td></tr>
<tr class="separator:aab6ff8baf51038f1557e817717baccba"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aca19990941933d7573a485851c6b798e"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#aca19990941933d7573a485851c6b798e">max_packet_size</a></td></tr>
<tr class="separator:aca19990941933d7573a485851c6b798e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a949cd6dbd89e2d5d59f5c768754004ca"><td class="memItemLeft" align="right" valign="top">unsigned long </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a949cd6dbd89e2d5d59f5c768754004ca">checksum</a></td></tr>
<tr class="separator:a949cd6dbd89e2d5d59f5c768754004ca"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a10cbe217c46aeb653d360a9391aff310"><td class="memItemLeft" align="right" valign="top">unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a10cbe217c46aeb653d360a9391aff310">checksum_ptr</a></td></tr>
<tr class="separator:a10cbe217c46aeb653d360a9391aff310"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7ff26703ccfb39cdd38fd49f5a95796c"><td class="memItemLeft" align="right" valign="top">unsigned long(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a7ff26703ccfb39cdd38fd49f5a95796c">update_checksum</a> )(unsigned long <a class="el" href="structAVIOContext.html#a949cd6dbd89e2d5d59f5c768754004ca">checksum</a>, const uint8_t *buf, unsigned int size)</td></tr>
<tr class="separator:a7ff26703ccfb39cdd38fd49f5a95796c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afb903b1d9614bfb59e8cc5213de3777b"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#afb903b1d9614bfb59e8cc5213de3777b">error</a></td></tr>
<tr class="memdesc:afb903b1d9614bfb59e8cc5213de3777b"><td class="mdescLeft"> </td><td class="mdescRight">contains the error code or 0 if no error happened <a href="#afb903b1d9614bfb59e8cc5213de3777b">More...</a><br /></td></tr>
<tr class="separator:afb903b1d9614bfb59e8cc5213de3777b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae3658a91428df0cfa2b834f6bd7d7bd4"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#ae3658a91428df0cfa2b834f6bd7d7bd4">read_pause</a> )(void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, int pause)</td></tr>
<tr class="memdesc:ae3658a91428df0cfa2b834f6bd7d7bd4"><td class="mdescLeft"> </td><td class="mdescRight">Pause or resume playback for network streaming protocols - e.g. <a href="#ae3658a91428df0cfa2b834f6bd7d7bd4">More...</a><br /></td></tr>
<tr class="separator:ae3658a91428df0cfa2b834f6bd7d7bd4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac2e538dd7f6a73cbc77e6ffdf3f11882"><td class="memItemLeft" align="right" valign="top">int64_t(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#ac2e538dd7f6a73cbc77e6ffdf3f11882">read_seek</a> )(void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, int stream_index, int64_t timestamp, int flags)</td></tr>
<tr class="memdesc:ac2e538dd7f6a73cbc77e6ffdf3f11882"><td class="mdescLeft"> </td><td class="mdescRight">Seek to a given timestamp in stream with the specified stream_index. <a href="#ac2e538dd7f6a73cbc77e6ffdf3f11882">More...</a><br /></td></tr>
<tr class="separator:ac2e538dd7f6a73cbc77e6ffdf3f11882"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0e3c41c290b38923880b9cccb669bf78"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a0e3c41c290b38923880b9cccb669bf78">seekable</a></td></tr>
<tr class="memdesc:a0e3c41c290b38923880b9cccb669bf78"><td class="mdescLeft"> </td><td class="mdescRight">A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable. <a href="#a0e3c41c290b38923880b9cccb669bf78">More...</a><br /></td></tr>
<tr class="separator:a0e3c41c290b38923880b9cccb669bf78"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a33e387aeb28b7a352c62ba8c30a214e7"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a33e387aeb28b7a352c62ba8c30a214e7">maxsize</a></td></tr>
<tr class="memdesc:a33e387aeb28b7a352c62ba8c30a214e7"><td class="mdescLeft"> </td><td class="mdescRight">max filesize, used to limit allocations This field is internal to libavformat and access from outside is not allowed. <a href="#a33e387aeb28b7a352c62ba8c30a214e7">More...</a><br /></td></tr>
<tr class="separator:a33e387aeb28b7a352c62ba8c30a214e7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af719be70947f5f8eebaa5f8ac58fd306"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#af719be70947f5f8eebaa5f8ac58fd306">direct</a></td></tr>
<tr class="memdesc:af719be70947f5f8eebaa5f8ac58fd306"><td class="mdescLeft"> </td><td class="mdescRight">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. <a href="#af719be70947f5f8eebaa5f8ac58fd306">More...</a><br /></td></tr>
<tr class="separator:af719be70947f5f8eebaa5f8ac58fd306"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2685da68190c842c028ec161ff2b563e"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a2685da68190c842c028ec161ff2b563e">bytes_read</a></td></tr>
<tr class="memdesc:a2685da68190c842c028ec161ff2b563e"><td class="mdescLeft"> </td><td class="mdescRight">Bytes read statistic This field is internal to libavformat and access from outside is not allowed. <a href="#a2685da68190c842c028ec161ff2b563e">More...</a><br /></td></tr>
<tr class="separator:a2685da68190c842c028ec161ff2b563e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a38b3c122a21fc2271e3174342e87a79f"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a38b3c122a21fc2271e3174342e87a79f">seek_count</a></td></tr>
<tr class="memdesc:a38b3c122a21fc2271e3174342e87a79f"><td class="mdescLeft"> </td><td class="mdescRight">seek statistic This field is internal to libavformat and access from outside is not allowed. <a href="#a38b3c122a21fc2271e3174342e87a79f">More...</a><br /></td></tr>
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<tr class="memitem:ac027eace34bf1dbcab5f71b0806d1c8a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#ac027eace34bf1dbcab5f71b0806d1c8a">writeout_count</a></td></tr>
<tr class="memdesc:ac027eace34bf1dbcab5f71b0806d1c8a"><td class="mdescLeft"> </td><td class="mdescRight">writeout statistic This field is internal to libavformat and access from outside is not allowed. <a href="#ac027eace34bf1dbcab5f71b0806d1c8a">More...</a><br /></td></tr>
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<tr class="memitem:a167eec001560f151e6ae0ebb4e2fd0fa"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a167eec001560f151e6ae0ebb4e2fd0fa">orig_buffer_size</a></td></tr>
<tr class="memdesc:a167eec001560f151e6ae0ebb4e2fd0fa"><td class="mdescLeft"> </td><td class="mdescRight">Original buffer size used internally after probing and ensure seekback to reset the buffer size This field is internal to libavformat and access from outside is not allowed. <a href="#a167eec001560f151e6ae0ebb4e2fd0fa">More...</a><br /></td></tr>
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<tr class="memitem:a9f82e8f4ffb1ba689bab08592c468298"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a9f82e8f4ffb1ba689bab08592c468298">short_seek_threshold</a></td></tr>
<tr class="memdesc:a9f82e8f4ffb1ba689bab08592c468298"><td class="mdescLeft"> </td><td class="mdescRight">Threshold to favor readahead over seek. <a href="#a9f82e8f4ffb1ba689bab08592c468298">More...</a><br /></td></tr>
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<tr class="memitem:a574dffd7a2101c2b41fb5fd051f501a0"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a574dffd7a2101c2b41fb5fd051f501a0">protocol_whitelist</a></td></tr>
<tr class="memdesc:a574dffd7a2101c2b41fb5fd051f501a0"><td class="mdescLeft"> </td><td class="mdescRight">',' separated list of allowed protocols. <a href="#a574dffd7a2101c2b41fb5fd051f501a0">More...</a><br /></td></tr>
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<tr class="memitem:a7ff42016848ad2bb5219539e8f1289a5"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a7ff42016848ad2bb5219539e8f1289a5">protocol_blacklist</a></td></tr>
<tr class="memdesc:a7ff42016848ad2bb5219539e8f1289a5"><td class="mdescLeft"> </td><td class="mdescRight">',' separated list of disallowed protocols. <a href="#a7ff42016848ad2bb5219539e8f1289a5">More...</a><br /></td></tr>
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<tr class="memitem:af665c7258315b757f3514f6ee4c338b7"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#af665c7258315b757f3514f6ee4c338b7">write_data_type</a> )(void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, uint8_t *buf, int buf_size, enum <a class="el" href="avio_8h.html#a4dbe7c0b3d5c86e46b9991ee805c5e21">AVIODataMarkerType</a> type, int64_t time)</td></tr>
<tr class="memdesc:af665c7258315b757f3514f6ee4c338b7"><td class="mdescLeft"> </td><td class="mdescRight">A callback that is used instead of write_packet. <a href="#af665c7258315b757f3514f6ee4c338b7">More...</a><br /></td></tr>
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<tr class="memitem:a434053350677c5d2bed3678c79545411"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a434053350677c5d2bed3678c79545411">ignore_boundary_point</a></td></tr>
<tr class="memdesc:a434053350677c5d2bed3678c79545411"><td class="mdescLeft"> </td><td class="mdescRight">If set, don't call write_data_type separately for AVIO_DATA_MARKER_BOUNDARY_POINT, but ignore them and treat them as AVIO_DATA_MARKER_UNKNOWN (to avoid needlessly small chunks of data returned from the callback). <a href="#a434053350677c5d2bed3678c79545411">More...</a><br /></td></tr>
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<tr class="memitem:a6ff30f754694871e8ac3b3eccdc784a9"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="avio_8h.html#a4dbe7c0b3d5c86e46b9991ee805c5e21">AVIODataMarkerType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a6ff30f754694871e8ac3b3eccdc784a9">current_type</a></td></tr>
<tr class="memdesc:a6ff30f754694871e8ac3b3eccdc784a9"><td class="mdescLeft"> </td><td class="mdescRight">Internal, not meant to be used from outside of <a class="el" href="structAVIOContext.html" title="Bytestream IO Context. ">AVIOContext</a>. <a href="#a6ff30f754694871e8ac3b3eccdc784a9">More...</a><br /></td></tr>
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<tr class="memitem:a13fd0839be2b03fbb663b91fb4a431de"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a13fd0839be2b03fbb663b91fb4a431de">last_time</a></td></tr>
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<tr class="memitem:a95a97850d60ef3e0a518c742b021772f"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a95a97850d60ef3e0a518c742b021772f">short_seek_get</a> )(void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>)</td></tr>
<tr class="memdesc:a95a97850d60ef3e0a518c742b021772f"><td class="mdescLeft"> </td><td class="mdescRight">A callback that is used instead of short_seek_threshold. <a href="#a95a97850d60ef3e0a518c742b021772f">More...</a><br /></td></tr>
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<tr class="memitem:a70ed80c758a3801219435c2ed7835bce"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a70ed80c758a3801219435c2ed7835bce">written</a></td></tr>
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<tr class="memitem:a51e82bc4929c1041fa7942003c5e1191"><td class="memItemLeft" align="right" valign="top">unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a51e82bc4929c1041fa7942003c5e1191">buf_ptr_max</a></td></tr>
<tr class="memdesc:a51e82bc4929c1041fa7942003c5e1191"><td class="mdescLeft"> </td><td class="mdescRight">Maximum reached position before a backward seek in the write buffer, used keeping track of already written data for a later flush. <a href="#a51e82bc4929c1041fa7942003c5e1191">More...</a><br /></td></tr>
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<tr class="memitem:a49a9413b9447d88f98450d119dcc476c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVIOContext.html#a49a9413b9447d88f98450d119dcc476c">min_packet_size</a></td></tr>
<tr class="memdesc:a49a9413b9447d88f98450d119dcc476c"><td class="mdescLeft"> </td><td class="mdescRight">Try to buffer at least this amount of data before flushing it. <a href="#a49a9413b9447d88f98450d119dcc476c">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Bytestream IO Context. </p>
<p>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*.</p>
<dl class="section note"><dt>Note</dt><dd>None of the function pointers in <a class="el" href="structAVIOContext.html" title="Bytestream IO Context. ">AVIOContext</a> should be called directly, they should only be set by the client application when implementing custom I/O. Normally these are set to the function pointers specified in <a class="el" href="avio_8h.html#a853f5149136a27ffba3207d8520172a5" title="Allocate and initialize an AVIOContext for buffered I/O. ">avio_alloc_context()</a> </dd></dl>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="avio_reading_8c-example.html#_a8">avio_reading.c</a>, <a class="el" href="http_multiclient_8c-example.html#_a1">http_multiclient.c</a>, and <a class="el" href="transcode_aac_8c-example.html#_a16">transcode_aac.c</a>.</dd>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00161">161</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
</div><h2 class="groupheader">Field Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a25d3b039ac00850a25d7b772566db6a8">◆ </a></span>av_class</h2>
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<td class="memname">const <a class="el" href="structAVClass.html">AVClass</a>* AVIOContext::av_class</td>
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<p>A class for private options. </p>
<p>If this <a class="el" href="structAVIOContext.html" title="Bytestream IO Context. ">AVIOContext</a> is created by <a class="el" href="avio_8h.html#ade8a63980569494c99593ebf0d1e891b" title="Create and initialize a AVIOContext for accessing the resource indicated by url. ">avio_open2()</a>, av_class is set and passes the options down to protocols.</p>
<p>If this <a class="el" href="structAVIOContext.html" title="Bytestream IO Context. ">AVIOContext</a> is manually allocated, then av_class may be set by the caller.</p>
<p>warning – this field can be NULL, be sure to not pass this <a class="el" href="structAVIOContext.html" title="Bytestream IO Context. ">AVIOContext</a> to any av_opt_* functions in that case. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00174">174</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a901e8fd2b978d40957c4ed0b77c2daf0">◆ </a></span>buffer</h2>
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<td class="memname">unsigned char* AVIOContext::buffer</td>
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<p>Start of the buffer. </p>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="avio_reading_8c-example.html#a21">avio_reading.c</a>.</dd>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00226">226</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="avio__reading_8c_source.html#l00057">main()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a0204148f407d72becba822b90e8ce9a6">◆ </a></span>buffer_size</h2>
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<td class="memname">int AVIOContext::buffer_size</td>
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<p>Maximum buffer size. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00227">227</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a3500915a7434270c42dffc80fafffa2d">◆ </a></span>buf_ptr</h2>
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<td class="memname">unsigned char* AVIOContext::buf_ptr</td>
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<p>Current position in the buffer. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00228">228</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a0683d1a134b647c54f6d087d152c9a64">◆ </a></span>buf_end</h2>
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<td class="memname">unsigned char* AVIOContext::buf_end</td>
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<p>End of the data, may be less than buffer+buffer_size if the read function returned less data than requested, e.g. </p>
<p>for streams where no more data has been received yet. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00229">229</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#afa97c079a10a48588f7b55f9dfff1e47">◆ </a></span>opaque</h2>
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<td class="memname">void* AVIOContext::opaque</td>
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<p>A private pointer, passed to the read/write/seek/... </p>
<p>functions. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00233">233</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9be0423e0c66d11d8e0ace043e3aec08">◆ </a></span>read_packet</h2>
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<td class="memname">int(* AVIOContext::read_packet) (void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, uint8_t *buf, int buf_size)</td>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00235">235</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<td class="memname">int(* AVIOContext::write_packet) (void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, uint8_t *buf, int buf_size)</td>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00236">236</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a4cda0cd632c90d13a546f663287e6cf5">◆ </a></span>seek</h2>
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<td class="memname">int64_t(* AVIOContext::seek) (void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, int64_t offset, int whence)</td>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00237">237</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7158ec9b44d75704ea5c2fa5ac28fd50">◆ </a></span>pos</h2>
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<td class="memname">int64_t AVIOContext::pos</td>
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<p>position in the file of the current buffer </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00238">238</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a06e6f0186fcf571355cee82e837dc339">◆ </a></span>must_flush</h2>
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<td class="memname">int AVIOContext::must_flush</td>
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<p>unused </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00239">239</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa9214f54c01f07076e0a0718b2e9c27b">◆ </a></span>eof_reached</h2>
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<td class="memname">int AVIOContext::eof_reached</td>
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<p>true if eof reached </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00240">240</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aab6ff8baf51038f1557e817717baccba">◆ </a></span>write_flag</h2>
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<td class="memname">int AVIOContext::write_flag</td>
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<p>true if open for writing </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00241">241</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aca19990941933d7573a485851c6b798e">◆ </a></span>max_packet_size</h2>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00242">242</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00243">243</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a10cbe217c46aeb653d360a9391aff310">◆ </a></span>checksum_ptr</h2>
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<td class="memname">unsigned char* AVIOContext::checksum_ptr</td>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00244">244</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7ff26703ccfb39cdd38fd49f5a95796c">◆ </a></span>update_checksum</h2>
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<td class="memname">unsigned long(* AVIOContext::update_checksum) (unsigned long <a class="el" href="structAVIOContext.html#a949cd6dbd89e2d5d59f5c768754004ca">checksum</a>, const uint8_t *buf, unsigned int size)</td>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00245">245</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#afb903b1d9614bfb59e8cc5213de3777b">◆ </a></span>error</h2>
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<td class="memname">int AVIOContext::error</td>
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<p>contains the error code or 0 if no error happened </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00246">246</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae3658a91428df0cfa2b834f6bd7d7bd4">◆ </a></span>read_pause</h2>
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<td class="memname">int(* AVIOContext::read_pause) (void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, int pause)</td>
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<p>Pause or resume playback for network streaming protocols - e.g. </p>
<p>MMS. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00250">250</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac2e538dd7f6a73cbc77e6ffdf3f11882">◆ </a></span>read_seek</h2>
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<td class="memname">int64_t(* AVIOContext::read_seek) (void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, int stream_index, int64_t timestamp, int flags)</td>
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<p>Seek to a given timestamp in stream with the specified stream_index. </p>
<p>Needed for some network streaming protocols which don't support seeking to byte position. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00256">256</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a0e3c41c290b38923880b9cccb669bf78">◆ </a></span>seekable</h2>
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<td class="memname">int AVIOContext::seekable</td>
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<p>A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00261">261</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a33e387aeb28b7a352c62ba8c30a214e7">◆ </a></span>maxsize</h2>
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<td class="memname">int64_t AVIOContext::maxsize</td>
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<p>max filesize, used to limit allocations This field is internal to libavformat and access from outside is not allowed. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00267">267</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af719be70947f5f8eebaa5f8ac58fd306">◆ </a></span>direct</h2>
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<td class="memname">int AVIOContext::direct</td>
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<p>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. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00274">274</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2685da68190c842c028ec161ff2b563e">◆ </a></span>bytes_read</h2>
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<td class="memname">int64_t AVIOContext::bytes_read</td>
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<p>Bytes read statistic This field is internal to libavformat and access from outside is not allowed. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00280">280</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a38b3c122a21fc2271e3174342e87a79f">◆ </a></span>seek_count</h2>
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<td class="memname">int AVIOContext::seek_count</td>
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<p>seek statistic This field is internal to libavformat and access from outside is not allowed. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00286">286</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac027eace34bf1dbcab5f71b0806d1c8a">◆ </a></span>writeout_count</h2>
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<td class="memname">int AVIOContext::writeout_count</td>
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<p>writeout statistic This field is internal to libavformat and access from outside is not allowed. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00292">292</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a167eec001560f151e6ae0ebb4e2fd0fa">◆ </a></span>orig_buffer_size</h2>
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<td class="memname">int AVIOContext::orig_buffer_size</td>
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<p>Original buffer size used internally after probing and ensure seekback to reset the buffer size This field is internal to libavformat and access from outside is not allowed. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00299">299</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9f82e8f4ffb1ba689bab08592c468298">◆ </a></span>short_seek_threshold</h2>
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<td class="memname">int AVIOContext::short_seek_threshold</td>
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<p>Threshold to favor readahead over seek. </p>
<p>This is current internal only, do not use from outside. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00305">305</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a574dffd7a2101c2b41fb5fd051f501a0">◆ </a></span>protocol_whitelist</h2>
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<td class="memname">const char* AVIOContext::protocol_whitelist</td>
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<p>',' separated list of allowed protocols. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00310">310</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7ff42016848ad2bb5219539e8f1289a5">◆ </a></span>protocol_blacklist</h2>
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<td class="memname">const char* AVIOContext::protocol_blacklist</td>
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<p>',' separated list of disallowed protocols. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00315">315</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af665c7258315b757f3514f6ee4c338b7">◆ </a></span>write_data_type</h2>
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<td class="memname">int(* AVIOContext::write_data_type) (void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>, uint8_t *buf, int buf_size, enum <a class="el" href="avio_8h.html#a4dbe7c0b3d5c86e46b9991ee805c5e21">AVIODataMarkerType</a> type, int64_t time)</td>
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<p>A callback that is used instead of write_packet. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00320">320</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a434053350677c5d2bed3678c79545411">◆ </a></span>ignore_boundary_point</h2>
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<td class="memname">int AVIOContext::ignore_boundary_point</td>
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<p>If set, don't call write_data_type separately for AVIO_DATA_MARKER_BOUNDARY_POINT, but ignore them and treat them as AVIO_DATA_MARKER_UNKNOWN (to avoid needlessly small chunks of data returned from the callback). </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00327">327</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6ff30f754694871e8ac3b3eccdc784a9">◆ </a></span>current_type</h2>
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<td class="memname">enum <a class="el" href="avio_8h.html#a4dbe7c0b3d5c86e46b9991ee805c5e21">AVIODataMarkerType</a> AVIOContext::current_type</td>
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<p>Internal, not meant to be used from outside of <a class="el" href="structAVIOContext.html" title="Bytestream IO Context. ">AVIOContext</a>. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00332">332</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a13fd0839be2b03fbb663b91fb4a431de">◆ </a></span>last_time</h2>
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<td class="memname">int64_t AVIOContext::last_time</td>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00333">333</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a95a97850d60ef3e0a518c742b021772f">◆ </a></span>short_seek_get</h2>
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<td class="memname">int(* AVIOContext::short_seek_get) (void *<a class="el" href="structAVIOContext.html#afa97c079a10a48588f7b55f9dfff1e47">opaque</a>)</td>
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<p>A callback that is used instead of short_seek_threshold. </p>
<p>This is current internal only, do not use from outside. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00339">339</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a70ed80c758a3801219435c2ed7835bce">◆ </a></span>written</h2>
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<td class="memname">int64_t AVIOContext::written</td>
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<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00341">341</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a51e82bc4929c1041fa7942003c5e1191">◆ </a></span>buf_ptr_max</h2>
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<td class="memname">unsigned char* AVIOContext::buf_ptr_max</td>
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<p>Maximum reached position before a backward seek in the write buffer, used keeping track of already written data for a later flush. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00347">347</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a49a9413b9447d88f98450d119dcc476c">◆ </a></span>min_packet_size</h2>
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<td class="memname">int AVIOContext::min_packet_size</td>
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<p>Try to buffer at least this amount of data before flushing it. </p>
<p class="definition">Definition at line <a class="el" href="avio_8h_source.html#l00352">352</a> of file <a class="el" href="avio_8h_source.html">avio.h</a>.</p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>libavformat/<a class="el" href="avio_8h_source.html">avio.h</a></li>
</ul>
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