AVIOContext

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*.

@note None of the function pointers in AVIOContext 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 avio_alloc_context()

@nogc nothrow extern (C)

struct AVIOContext {

int function(void* opaque, uint8_t* buf, int buf_size) read_packet;

int function(void* opaque, uint8_t* buf, int buf_size) write_packet;

int64_t function(void* opaque, int64_t offset, int whence) seek;

int max_packet_size;

uint checksum;

ubyte* checksum_ptr;

uint function(uint checksum, const uint8_t* buf, uint size) update_checksum;

int error;

int function(void* opaque, int pause) read_pause;

int64_t function(void* opaque, int stream_index, int64_t timestamp, int flags) read_seek;

int seekable;

int64_t maxsize;

int direct;

int64_t bytes_read;

int seek_count;

int writeout_count;

int orig_buffer_size;

int short_seek_threshold;

const

char* protocol_whitelist;

}

Members

Variables

av_class AVClass* av_class;: A class for private options.
buf_end ubyte* 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.
buf_ptr ubyte* buf_ptr;: < Current position in the buffer
buffer ubyte* buffer;: < Start of the buffer.
buffer_size int buffer_size;: < Maximum buffer size
bytes_read int64_t bytes_read;: Bytes read statistic This field is internal to libavformat and access from outside is not allowed.
checksum uint checksum;: Undocumented in source.
checksum_ptr ubyte* checksum_ptr;: Undocumented in source.
direct 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.
eof_reached int eof_reached;: < true if eof reached
error int error;: < contains the error code or 0 if no error happened
max_packet_size int max_packet_size;: Undocumented in source.
maxsize int64_t maxsize;: max filesize, used to limit allocations This field is internal to libavformat and access from outside is not allowed.
must_flush int must_flush;: < true if the next seek should flush
opaque void* opaque;: < A private pointer, passed to the read/write/seek/... functions.
orig_buffer_size int orig_buffer_size;: 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.
pos int64_t pos;: < position in the file of the current buffer
protocol_whitelist char* protocol_whitelist;: ',' separated list of allowed protocols.
read_packet int function(void* opaque, uint8_t* buf, int buf_size) read_packet;: Undocumented in source.
read_pause int function(void* opaque, int pause) read_pause;: Pause or resume playback for network streaming protocols - e.g. MMS.
read_seek int64_t function(void* opaque, int stream_index, int64_t timestamp, int flags) read_seek;: 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.
seek int64_t function(void* opaque, int64_t offset, int whence) seek;: Undocumented in source.
seek_count int seek_count;: seek statistic This field is internal to libavformat and access from outside is not allowed.
seekable int seekable;: A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
short_seek_threshold int short_seek_threshold;: Threshold to favor readahead over seek. This is current internal only, do not use from outside.
update_checksum uint function(uint checksum, const uint8_t* buf, uint size) update_checksum;: Undocumented in source.
write_flag int write_flag;: < true if open for writing
write_packet int function(void* opaque, uint8_t* buf, int buf_size) write_packet;: Undocumented in source.
writeout_count int writeout_count;: writeout statistic This field is internal to libavformat and access from outside is not allowed.

AVIOContext

Members

Variables

Meta

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