diff options
Diffstat (limited to '')
| -rw-r--r-- | src/lib/ffmpeg/avio.pas | 116 |
1 files changed, 104 insertions, 12 deletions
diff --git a/src/lib/ffmpeg/avio.pas b/src/lib/ffmpeg/avio.pas index 1a37e556..ba717c1a 100644 --- a/src/lib/ffmpeg/avio.pas +++ b/src/lib/ffmpeg/avio.pas @@ -97,7 +97,7 @@ type is_streamed: cint; (**< true if streamed (no seek possible), default = false *) max_packet_size: cint; (**< if non zero, the stream is packetized with this max packet size *) priv_data: pointer; - filename: PAnsiChar; (**< specified filename *) + filename: PAnsiChar; (**< specified URL *) end; PPURLContext = ^PURLContext; @@ -110,8 +110,29 @@ type TURLProtocol = record name: PAnsiChar; +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 url_open: function (h: PURLContext; filename: {const} PAnsiChar; flags: cint): cint; cdecl; +{$ELSE} + url_open: function (h: PURLContext; url: {const} PAnsiChar; flags: cint): cint; cdecl; +{$IFEND} +(** + * Reads up to size bytes from the resource accessed by h, and stores + * the read bytes in buf. + * + * @return The number of bytes actually read, or a negative value + * corresponding to an AVERROR code in case of error. A value of zero + * indicates that it is not possible to read more from the accessed + * resource (except if the value of the size argument is also zero). + *) url_read: function (h: PURLContext; buf: PByteArray; size: cint): cint; cdecl; +(** + * Read as many bytes as possible (up to size), calling the + * read function multiple times if necessary. + * Will also retry if the read function returns AVERROR(EAGAIN). + * This makes special short-read handling in applications + * unnecessary, if the return value is < size then it is + * certain there was either an error or the end of file was reached. + *) url_write: function (h: PURLContext; buf: PByteArray; size: cint): cint; cdecl; url_seek: function (h: PURLContext; pos: cint64; whence: cint): cint64; cdecl; url_close: function (h: PURLContext): cint; cdecl; @@ -174,11 +195,42 @@ type {$IF LIBAVFORMAT_VERSION >= 52021000} // 52.21.0 +(** + * Creates an URLContext for accessing to the resource indicated by + * URL, and opens it using the URLProtocol up. + * + * @param puc pointer to the location where, in case of success, the + * function puts the pointer to the created URLContext + * @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 + *) function url_open_protocol(puc: PPURLContext; up: PURLProtocol; +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 filename: {const} PAnsiChar; flags: cint): cint; +{$ELSE} + url: {const} PAnsiChar; flags: cint): cint; +{$IFEND} cdecl; external av__format; {$IFEND} + +(** + * Creates an URLContext for accessing to the resource indicated by + * url, and opens it. + * + * @param puc pointer to the location where, in case of success, the + * function puts the pointer to the created URLContext + * @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 + *) +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 function url_open(h: PPointer; filename: {const} PAnsiChar; flags: cint): cint; +{$ELSE} +function url_open(h: PPointer; url: {const} PAnsiChar; flags: cint): cint; +{$IFEND} cdecl; external av__format; function url_read (h: PURLContext; buf: PByteArray; size: cint): cint; cdecl; external av__format; @@ -190,19 +242,30 @@ function url_write (h: PURLContext; buf: PByteArray; size: cint): cint; cdecl; external av__format; function url_seek (h: PURLContext; pos: cint64; whence: cint): cint64; cdecl; external av__format; +(** + * Closes the resource accessed by the URLContext h, and frees the + * memory used by it. + * + * @return a negative value if an error condition occurred, 0 + * otherwise + *) function url_close (h: PURLContext): cint; cdecl; external av__format; +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 function url_exist(filename: {const} PAnsiChar): cint; +{$ELSE} +function url_exist(url: {const} PAnsiChar): cint; +{$IFEND} cdecl; external av__format; function url_filesize (h: PURLContext): cint64; cdecl; external av__format; -{ +(** * Return the file descriptor associated with this URL. For RTP, this * will return only the RTP file descriptor, not the RTCP file descriptor. * To get both, use rtp_get_file_handles(). * * @return the file descriptor associated with this URL, or <0 on error. -} + *) (* not implemented *) function url_get_file_handle(h: PURLContext): cint; cdecl; external av__format; @@ -274,16 +337,19 @@ var url_interrupt_cb: PURLInterruptCB; external av__format; **) -{ -* If protocol is NULL, returns the first registered protocol, -* if protocol is non-NULL, returns the next registered protocol after protocol, -* or NULL if protocol is the last one. -} +(** + * If protocol is NULL, returns the first registered protocol, + * if protocol is non-NULL, returns the next registered protocol after protocol, + * or NULL if protocol is the last one. + *) {$IF LIBAVFORMAT_VERSION >= 52002000} // 52.2.0 function av_protocol_next(p: PURLProtocol): PURLProtocol; cdecl; external av__format; {$IFEND} +(** + * Registers the URLProtocol protocol. + *) {$IF LIBAVFORMAT_VERSION <= 52028000} // 52.28.0 (** * @deprecated Use av_register_protocol() instead. @@ -462,8 +528,18 @@ function ff_get_v(bc: PByteIOContext): cuint64; function url_is_streamed(s: PByteIOContext): cint; {$IFDEF HasInline}inline;{$ENDIF} -(** @note when opened as read/write, the buffers are only used for - writing *) + +(** + * Creates and initializes a ByteIOContext for accessing the + * resource referenced by the URLContext h. + * @note When the URLContext h has been opened in read+write mode, the + * ByteIOContext can be used only for writing. + * + * @param s Used to return the pointer to the created ByteIOContext. + * In case of failure the pointed to value is set to NULL. + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + *) {$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0 function url_fdopen (var s: PByteIOContext; h: PURLContext): cint; {$ELSE} @@ -486,13 +562,29 @@ function url_resetbuf(s: PByteIOContext; flags: cint): cint; {$IFEND} {$IFEND} -(** @note when opened as read/write, the buffers are only used for - writing *) + +(** + * Creates and initializes a ByteIOContext for accessing the + * resource indicated by url. + * @note When the resource indicated by url has been opened in + * read+write mode, the ByteIOContext can be used only for writing. + * + * @param s Used to return the pointer to the created ByteIOContext. + * In case of failure the pointed to value is set to NULL. + * @param flags flags which control how the resource indicated by url + * is to be opened + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + *) +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 {$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0 function url_fopen(var s: PByteIOContext; filename: {const} PAnsiChar; flags: cint): cint; {$ELSE} function url_fopen(s: PByteIOContext; filename: {const} PAnsiChar; flags: cint): cint; {$IFEND} +{$ELSE} +function url_fopen(var s: PByteIOContext; url: {const} PAnsiChar; flags: cint): cint; +{$IFEND} cdecl; external av__format; function url_fclose(s: PByteIOContext): cint; cdecl; external av__format; |