X-Git-Url: http://47.100.26.94:8080/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjni%2Finclude%2Flibavformat%2Favio.h;fp=app%2Fsrc%2Fmain%2Fjni%2Finclude%2Flibavformat%2Favio.h;h=0000000000000000000000000000000000000000;hb=577426ccc66649228285c4a0b6ba8752836059c6;hp=7fbce32b6c9c48247b3b12e7cda7b8b9f854b5c6;hpb=b7202442677d0cf41e6e59870cd6c34e5619b8b9;p=rtmpclient.git diff --git a/app/src/main/jni/include/libavformat/avio.h b/app/src/main/jni/include/libavformat/avio.h deleted file mode 100644 index 7fbce32..0000000 --- a/app/src/main/jni/include/libavformat/avio.h +++ /dev/null @@ -1,732 +0,0 @@ -/* - * copyright (c) 2001 Fabrice Bellard - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef AVFORMAT_AVIO_H -#define AVFORMAT_AVIO_H - -/** - * @file - * @ingroup lavf_io - * Buffered I/O operations - */ - -#include - -#include "libavutil/common.h" -#include "libavutil/dict.h" -#include "libavutil/log.h" - -#include "libavformat/version.h" - -#define AVIO_SEEKABLE_NORMAL 0x0001 /**< Seeking works like for a local file */ - -/** - * Callback for checking whether to abort blocking functions. - * AVERROR_EXIT is returned in this case by the interrupted - * function. During blocking operations, callback is called with - * opaque as parameter. If the callback returns 1, the - * blocking operation will be aborted. - * - * No members can be added to this struct without a major bump, if - * new elements have been added after this struct in AVFormatContext - * or AVIOContext. - */ -typedef struct AVIOInterruptCB { - int (*callback)(void*); - void *opaque; -} AVIOInterruptCB; - -/** - * Directory entry types. - */ -enum AVIODirEntryType { - AVIO_ENTRY_UNKNOWN, - AVIO_ENTRY_BLOCK_DEVICE, - AVIO_ENTRY_CHARACTER_DEVICE, - AVIO_ENTRY_DIRECTORY, - AVIO_ENTRY_NAMED_PIPE, - AVIO_ENTRY_SYMBOLIC_LINK, - AVIO_ENTRY_SOCKET, - AVIO_ENTRY_FILE, - AVIO_ENTRY_SERVER, - AVIO_ENTRY_SHARE, - AVIO_ENTRY_WORKGROUP, -}; - -/** - * Describes single entry of the directory. - * - * Only name and type fields are guaranteed be set. - * Rest of fields are protocol or/and platform dependent and might be unknown. - */ -typedef struct AVIODirEntry { - char *name; /**< Filename */ - int type; /**< Type of the entry */ - int utf8; /**< Set to 1 when name is encoded with UTF-8, 0 otherwise. - Name can be encoded with UTF-8 even though 0 is set. */ - int64_t size; /**< File size in bytes, -1 if unknown. */ - int64_t modification_timestamp; /**< Time of last modification in microseconds since unix - epoch, -1 if unknown. */ - int64_t access_timestamp; /**< Time of last access in microseconds since unix epoch, - -1 if unknown. */ - int64_t status_change_timestamp; /**< Time of last status change in microseconds since unix - epoch, -1 if unknown. */ - int64_t user_id; /**< User ID of owner, -1 if unknown. */ - int64_t group_id; /**< Group ID of owner, -1 if unknown. */ - int64_t filemode; /**< Unix file mode, -1 if unknown. */ -} AVIODirEntry; - -typedef struct AVIODirContext { - struct URLContext *url_context; -} AVIODirContext; - -/** - * 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() - */ -typedef struct AVIOContext { - /** - * 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. - */ - const AVClass *av_class; - - /* - * The following shows the relationship between buffer, buf_ptr, buf_end, buf_size, - * and pos, when reading and when writing (since AVIOContext is used for both): - * - ********************************************************************************** - * READING - ********************************************************************************** - * - * | buffer_size | - * |---------------------------------------| - * | | - * - * buffer buf_ptr buf_end - * +---------------+-----------------------+ - * |/ / / / / / / /|/ / / / / / /| | - * read buffer: |/ / consumed / | to be read /| | - * |/ / / / / / / /|/ / / / / / /| | - * +---------------+-----------------------+ - * - * pos - * +-------------------------------------------+-----------------+ - * input file: | | | - * +-------------------------------------------+-----------------+ - * - * - ********************************************************************************** - * WRITING - ********************************************************************************** - * - * | buffer_size | - * |-------------------------------| - * | | - * - * buffer buf_ptr buf_end - * +-------------------+-----------+ - * |/ / / / / / / / / /| | - * write buffer: | / to be flushed / | | - * |/ / / / / / / / / /| | - * +-------------------+-----------+ - * - * pos - * +--------------------------+-----------------------------------+ - * output file: | | | - * +--------------------------+-----------------------------------+ - * - */ - 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. for streams where - no more data has been received yet. */ - void *opaque; /**< A private pointer, passed to the read/write/seek/... - functions. */ - 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 */ - /** - * Pause or resume playback for network streaming protocols - e.g. MMS. - */ - int (*read_pause)(void *opaque, int pause); - /** - * 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. - */ - int64_t (*read_seek)(void *opaque, int stream_index, - int64_t timestamp, int flags); - /** - * A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable. - */ - int seekable; - - /** - * max filesize, used to limit allocations - * This field is internal to libavformat and access from outside is not allowed. - */ - int64_t maxsize; - - /** - * 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. - */ - int direct; - - /** - * Bytes read statistic - * This field is internal to libavformat and access from outside is not allowed. - */ - int64_t bytes_read; - - /** - * seek statistic - * This field is internal to libavformat and access from outside is not allowed. - */ - int seek_count; - - /** - * writeout statistic - * This field is internal to libavformat and access from outside is not allowed. - */ - int writeout_count; - - /** - * 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. - */ - int orig_buffer_size; - - /** - * Threshold to favor readahead over seek. - * This is current internal only, do not use from outside. - */ - int short_seek_threshold; - - /** - * ',' separated list of allowed protocols. - */ - const char *protocol_whitelist; -} AVIOContext; - -/* unbuffered I/O */ - -/** - * Return the name of the protocol that will handle the passed URL. - * - * NULL is returned if no protocol could be found for the given URL. - * - * @return Name of the protocol or NULL. - */ -const char *avio_find_protocol_name(const char *url); - -/** - * Return AVIO_FLAG_* access flags corresponding to the access permissions - * of the resource in url, or a negative value corresponding to an - * AVERROR code in case of failure. The returned access flags are - * masked by the value in flags. - * - * @note This function is intrinsically unsafe, in the sense that the - * checked resource may change its existence or permission status from - * one call to another. Thus you should not trust the returned value, - * unless you are sure that no other processes are accessing the - * checked resource. - */ -int avio_check(const char *url, int flags); - -/** - * Move or rename a resource. - * - * @note url_src and url_dst should share the same protocol and authority. - * - * @param url_src url to resource to be moved - * @param url_dst new url to resource if the operation succeeded - * @return >=0 on success or negative on error. - */ -int avpriv_io_move(const char *url_src, const char *url_dst); - -/** - * Delete a resource. - * - * @param url resource to be deleted. - * @return >=0 on success or negative on error. - */ -int avpriv_io_delete(const char *url); - -/** - * Open directory for reading. - * - * @param s directory read context. Pointer to a NULL pointer must be passed. - * @param url directory to be listed. - * @param options A dictionary filled with protocol-private options. On return - * this parameter will be destroyed and replaced with a dictionary - * containing options that were not found. May be NULL. - * @return >=0 on success or negative on error. - */ -int avio_open_dir(AVIODirContext **s, const char *url, AVDictionary **options); - -/** - * Get next directory entry. - * - * Returned entry must be freed with avio_free_directory_entry(). In particular - * it may outlive AVIODirContext. - * - * @param s directory read context. - * @param[out] next next entry or NULL when no more entries. - * @return >=0 on success or negative on error. End of list is not considered an - * error. - */ -int avio_read_dir(AVIODirContext *s, AVIODirEntry **next); - -/** - * Close directory. - * - * @note Entries created using avio_read_dir() are not deleted and must be - * freeded with avio_free_directory_entry(). - * - * @param s directory read context. - * @return >=0 on success or negative on error. - */ -int avio_close_dir(AVIODirContext **s); - -/** - * Free entry allocated by avio_read_dir(). - * - * @param entry entry to be freed. - */ -void avio_free_directory_entry(AVIODirEntry **entry); - -/** - * Allocate and initialize an AVIOContext for buffered I/O. It must be later - * freed with av_free(). - * - * @param buffer Memory block for input/output operations via AVIOContext. - * The buffer must be allocated with av_malloc() and friends. - * It may be freed and replaced with a new buffer by libavformat. - * AVIOContext.buffer holds the buffer currently in use, - * which must be later freed with av_free(). - * @param buffer_size The buffer size is very important for performance. - * For protocols with fixed blocksize it should be set to this blocksize. - * For others a typical size is a cache page, e.g. 4kb. - * @param write_flag Set to 1 if the buffer should be writable, 0 otherwise. - * @param opaque An opaque pointer to user-specific data. - * @param read_packet A function for refilling the buffer, may be NULL. - * @param write_packet A function for writing the buffer contents, may be NULL. - * The function may not change the input buffers content. - * @param seek A function for seeking to specified byte position, may be NULL. - * - * @return Allocated AVIOContext or NULL on failure. - */ -AVIOContext *avio_alloc_context( - unsigned char *buffer, - int buffer_size, - int write_flag, - void *opaque, - 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)); - -void avio_w8(AVIOContext *s, int b); -void avio_write(AVIOContext *s, const unsigned char *buf, int size); -void avio_wl64(AVIOContext *s, uint64_t val); -void avio_wb64(AVIOContext *s, uint64_t val); -void avio_wl32(AVIOContext *s, unsigned int val); -void avio_wb32(AVIOContext *s, unsigned int val); -void avio_wl24(AVIOContext *s, unsigned int val); -void avio_wb24(AVIOContext *s, unsigned int val); -void avio_wl16(AVIOContext *s, unsigned int val); -void avio_wb16(AVIOContext *s, unsigned int val); - -/** - * Write a NULL-terminated string. - * @return number of bytes written. - */ -int avio_put_str(AVIOContext *s, const char *str); - -/** - * Convert an UTF-8 string to UTF-16LE and write it. - * @param s the AVIOContext - * @param str NULL-terminated UTF-8 string - * - * @return number of bytes written. - */ -int avio_put_str16le(AVIOContext *s, const char *str); - -/** - * Convert an UTF-8 string to UTF-16BE and write it. - * @param s the AVIOContext - * @param str NULL-terminated UTF-8 string - * - * @return number of bytes written. - */ -int avio_put_str16be(AVIOContext *s, const char *str); - -/** - * Passing this as the "whence" parameter to a seek function causes it to - * return the filesize without seeking anywhere. Supporting this is optional. - * If it is not supported then the seek function will return <0. - */ -#define AVSEEK_SIZE 0x10000 - -/** - * Oring this flag as into the "whence" parameter to a seek function causes it to - * seek by any means (like reopening and linear reading) or other normally unreasonable - * means that can be extremely slow. - * This may be ignored by the seek code. - */ -#define AVSEEK_FORCE 0x20000 - -/** - * fseek() equivalent for AVIOContext. - * @return new position or AVERROR. - */ -int64_t avio_seek(AVIOContext *s, int64_t offset, int whence); - -/** - * Skip given number of bytes forward - * @return new position or AVERROR. - */ -int64_t avio_skip(AVIOContext *s, int64_t offset); - -/** - * ftell() equivalent for AVIOContext. - * @return position or AVERROR. - */ -static av_always_inline int64_t avio_tell(AVIOContext *s) -{ - return avio_seek(s, 0, SEEK_CUR); -} - -/** - * Get the filesize. - * @return filesize or AVERROR - */ -int64_t avio_size(AVIOContext *s); - -/** - * feof() equivalent for AVIOContext. - * @return non zero if and only if end of file - */ -int avio_feof(AVIOContext *s); -#if FF_API_URL_FEOF -/** - * @deprecated use avio_feof() - */ -attribute_deprecated -int url_feof(AVIOContext *s); -#endif - -/** @warning Writes up to 4 KiB per call */ -int avio_printf(AVIOContext *s, const char *fmt, ...) av_printf_format(2, 3); - -/** - * Force flushing of buffered data. - * - * For write streams, force the buffered data to be immediately written to the output, - * without to wait to fill the internal buffer. - * - * For read streams, discard all currently buffered data, and advance the - * reported file position to that of the underlying stream. This does not - * read new data, and does not perform any seeks. - */ -void avio_flush(AVIOContext *s); - -/** - * Read size bytes from AVIOContext into buf. - * @return number of bytes read or AVERROR - */ -int avio_read(AVIOContext *s, unsigned char *buf, int size); - -/** - * @name Functions for reading from AVIOContext - * @{ - * - * @note return 0 if EOF, so you cannot use it if EOF handling is - * necessary - */ -int avio_r8 (AVIOContext *s); -unsigned int avio_rl16(AVIOContext *s); -unsigned int avio_rl24(AVIOContext *s); -unsigned int avio_rl32(AVIOContext *s); -uint64_t avio_rl64(AVIOContext *s); -unsigned int avio_rb16(AVIOContext *s); -unsigned int avio_rb24(AVIOContext *s); -unsigned int avio_rb32(AVIOContext *s); -uint64_t avio_rb64(AVIOContext *s); -/** - * @} - */ - -/** - * Read a string from pb into buf. The reading will terminate when either - * a NULL character was encountered, maxlen bytes have been read, or nothing - * more can be read from pb. The result is guaranteed to be NULL-terminated, it - * will be truncated if buf is too small. - * Note that the string is not interpreted or validated in any way, it - * might get truncated in the middle of a sequence for multi-byte encodings. - * - * @return number of bytes read (is always <= maxlen). - * If reading ends on EOF or error, the return value will be one more than - * bytes actually read. - */ -int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen); - -/** - * Read a UTF-16 string from pb and convert it to UTF-8. - * The reading will terminate when either a null or invalid character was - * encountered or maxlen bytes have been read. - * @return number of bytes read (is always <= maxlen) - */ -int avio_get_str16le(AVIOContext *pb, int maxlen, char *buf, int buflen); -int avio_get_str16be(AVIOContext *pb, int maxlen, char *buf, int buflen); - - -/** - * @name URL open modes - * The flags argument to avio_open must be one of the following - * constants, optionally ORed with other flags. - * @{ - */ -#define AVIO_FLAG_READ 1 /**< read-only */ -#define AVIO_FLAG_WRITE 2 /**< write-only */ -#define AVIO_FLAG_READ_WRITE (AVIO_FLAG_READ|AVIO_FLAG_WRITE) /**< read-write pseudo flag */ -/** - * @} - */ - -/** - * Use non-blocking mode. - * If this flag is set, operations on the context will return - * AVERROR(EAGAIN) if they can not be performed immediately. - * If this flag is not set, operations on the context will never return - * AVERROR(EAGAIN). - * Note that this flag does not affect the opening/connecting of the - * context. Connecting a protocol will always block if necessary (e.g. on - * network protocols) but never hang (e.g. on busy devices). - * Warning: non-blocking protocols is work-in-progress; this flag may be - * silently ignored. - */ -#define AVIO_FLAG_NONBLOCK 8 - -/** - * Use direct mode. - * 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. - */ -#define AVIO_FLAG_DIRECT 0x8000 - -/** - * Create and initialize a AVIOContext for accessing the - * resource indicated by url. - * @note When the resource indicated by url has been opened in - * read+write mode, the AVIOContext can be used only for writing. - * - * @param s Used to return the pointer to the created AVIOContext. - * In case of failure the pointed to value is set to NULL. - * @param url resource to access - * @param flags flags which control how the resource indicated by url - * is to be opened - * @return >= 0 in case of success, a negative value corresponding to an - * AVERROR code in case of failure - */ -int avio_open(AVIOContext **s, const char *url, int flags); - -/** - * Create and initialize a AVIOContext for accessing the - * resource indicated by url. - * @note When the resource indicated by url has been opened in - * read+write mode, the AVIOContext can be used only for writing. - * - * @param s Used to return the pointer to the created AVIOContext. - * In case of failure the pointed to value is set to NULL. - * @param url resource to access - * @param flags flags which control how the resource indicated by url - * is to be opened - * @param int_cb an interrupt callback to be used at the protocols level - * @param options A dictionary filled with protocol-private options. On return - * this parameter will be destroyed and replaced with a dict containing options - * that were not found. May be NULL. - * @return >= 0 in case of success, a negative value corresponding to an - * AVERROR code in case of failure - */ -int avio_open2(AVIOContext **s, const char *url, int flags, - const AVIOInterruptCB *int_cb, AVDictionary **options); - -/** - * Close the resource accessed by the AVIOContext s and free it. - * This function can only be used if s was opened by avio_open(). - * - * The internal buffer is automatically flushed before closing the - * resource. - * - * @return 0 on success, an AVERROR < 0 on error. - * @see avio_closep - */ -int avio_close(AVIOContext *s); - -/** - * Close the resource accessed by the AVIOContext *s, free it - * and set the pointer pointing to it to NULL. - * This function can only be used if s was opened by avio_open(). - * - * The internal buffer is automatically flushed before closing the - * resource. - * - * @return 0 on success, an AVERROR < 0 on error. - * @see avio_close - */ -int avio_closep(AVIOContext **s); - - -/** - * Open a write only memory stream. - * - * @param s new IO context - * @return zero if no error. - */ -int avio_open_dyn_buf(AVIOContext **s); - -/** - * Return the written size and a pointer to the buffer. The buffer - * must be freed with av_free(). - * Padding of AV_INPUT_BUFFER_PADDING_SIZE is added to the buffer. - * - * @param s IO context - * @param pbuffer pointer to a byte buffer - * @return the length of the byte buffer - */ -int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer); - -/** - * Iterate through names of available protocols. - * - * @param opaque A private pointer representing current protocol. - * It must be a pointer to NULL on first iteration and will - * be updated by successive calls to avio_enum_protocols. - * @param output If set to 1, iterate over output protocols, - * otherwise over input protocols. - * - * @return A static string containing the name of current protocol or NULL - */ -const char *avio_enum_protocols(void **opaque, int output); - -/** - * Pause and resume playing - only meaningful if using a network streaming - * protocol (e.g. MMS). - * - * @param h IO context from which to call the read_pause function pointer - * @param pause 1 for pause, 0 for resume - */ -int avio_pause(AVIOContext *h, int pause); - -/** - * Seek to a given timestamp relative to some component stream. - * Only meaningful if using a network streaming protocol (e.g. MMS.). - * - * @param h IO context from which to call the seek function pointers - * @param stream_index The stream index that the timestamp is relative to. - * If stream_index is (-1) the timestamp should be in AV_TIME_BASE - * units from the beginning of the presentation. - * If a stream_index >= 0 is used and the protocol does not support - * seeking based on component streams, the call will fail. - * @param timestamp timestamp in AVStream.time_base units - * or if there is no stream specified then in AV_TIME_BASE units. - * @param flags Optional combination of AVSEEK_FLAG_BACKWARD, AVSEEK_FLAG_BYTE - * and AVSEEK_FLAG_ANY. The protocol may silently ignore - * AVSEEK_FLAG_BACKWARD and AVSEEK_FLAG_ANY, but AVSEEK_FLAG_BYTE will - * fail if used and not supported. - * @return >= 0 on success - * @see AVInputFormat::read_seek - */ -int64_t avio_seek_time(AVIOContext *h, int stream_index, - int64_t timestamp, int flags); - -/* Avoid a warning. The header can not be included because it breaks c++. */ -struct AVBPrint; - -/** - * Read contents of h into print buffer, up to max_size bytes, or up to EOF. - * - * @return 0 for success (max_size bytes read or EOF reached), negative error - * code otherwise - */ -int avio_read_to_bprint(AVIOContext *h, struct AVBPrint *pb, size_t max_size); - -/** - * Accept and allocate a client context on a server context. - * @param s the server context - * @param c the client context, must be unallocated - * @return >= 0 on success or a negative value corresponding - * to an AVERROR on failure - */ -int avio_accept(AVIOContext *s, AVIOContext **c); - -/** - * Perform one step of the protocol handshake to accept a new client. - * This function must be called on a client returned by avio_accept() before - * using it as a read/write context. - * It is separate from avio_accept() because it may block. - * A step of the handshake is defined by places where the application may - * decide to change the proceedings. - * For example, on a protocol with a request header and a reply header, each - * one can constitute a step because the application may use the parameters - * from the request to change parameters in the reply; or each individual - * chunk of the request can constitute a step. - * If the handshake is already finished, avio_handshake() does nothing and - * returns 0 immediately. - * - * @param c the client context to perform the handshake on - * @return 0 on a complete and successful handshake - * > 0 if the handshake progressed, but is not complete - * < 0 for an AVERROR code - */ -int avio_handshake(AVIOContext *c); -#endif /* AVFORMAT_AVIO_H */