From 536333a0fe2e20bd7314a589635f08a451d1e12e Mon Sep 17 00:00:00 2001 From: Björn Axelsson Date: Sat, 24 Nov 2007 07:09:32 +0000 Subject: Extend URLProtocol with new function pointers and api functions for av_url_read_play(), av_url_read_pause() and av_url_read_seek(). MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit patch by: Björn Axelsson, bjorn d axelsson a intinor d se Originally committed as revision 11086 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/avio.c | 22 ++++++++++++++++++++++ libavformat/avio.h | 30 ++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) (limited to 'libavformat') diff --git a/libavformat/avio.c b/libavformat/avio.c index 793f8ab1f4..234a99a15d 100644 --- a/libavformat/avio.c +++ b/libavformat/avio.c @@ -187,3 +187,25 @@ void url_set_interrupt_cb(URLInterruptCB *interrupt_cb) interrupt_cb = default_interrupt_cb; url_interrupt_cb = interrupt_cb; } + +int av_url_read_play(URLContext *h) +{ + if (!h->prot->url_read_play) + return AVERROR(ENOSYS); + return h->prot->url_read_play(h); +} + +int av_url_read_pause(URLContext *h) +{ + if (!h->prot->url_read_pause) + return AVERROR(ENOSYS); + return h->prot->url_read_pause(h); +} + +int av_url_read_seek(URLContext *h, + int stream_index, int64_t timestamp, int flags) +{ + if (!h->prot->url_read_seek) + return AVERROR(ENOSYS); + return h->prot->url_read_seek(h, stream_index, timestamp, flags); +} diff --git a/libavformat/avio.h b/libavformat/avio.h index 89a347b78f..138508ed1c 100644 --- a/libavformat/avio.h +++ b/libavformat/avio.h @@ -86,6 +86,32 @@ void url_set_interrupt_cb(URLInterruptCB *interrupt_cb); /* not implemented */ int url_poll(URLPollEntry *poll_table, int n, int timeout); +/** Start playing or resume paused playout. Only meaningful if using a network + * streaming protocol (e.g. MMS). */ +int av_url_read_play(URLContext *h); +/** Pause playing - only meaningful if using a network streaming protocol + * (e.g. MMS). */ +int av_url_read_pause(URLContext *h); +/** + * Seek to a given timestamp relative to some component stream. + * Only meaningful if using a network streaming protocol (e.g. MMS.) + * @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 with ENOTSUP. + * @param time_stamp 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 with ENOTSUP if used and not supported. + * @return >= 0 on success + * @see AVInputFormat::read_seek + */ +int av_url_read_seek(URLContext *h, + int stream_index, int64_t timestamp, int flags); + /** * Passing this as the "whence" parameter to a seek function causes it to * return the filesize without seeking anywhere. Supporting this is optional. @@ -101,6 +127,10 @@ typedef struct URLProtocol { offset_t (*url_seek)(URLContext *h, offset_t pos, int whence); int (*url_close)(URLContext *h); struct URLProtocol *next; + int (*url_read_play)(URLContext *h); + int (*url_read_pause)(URLContext *h); + int (*url_read_seek)(URLContext *h, + int stream_index, int64_t timestamp, int flags); } URLProtocol; extern URLProtocol *first_protocol; -- cgit v1.2.3