lavf: allow custom IO for all files

Some (de)muxers open additional files beyond the main IO context. Currently, they call avio_open() directly, which prevents the caller from using custom IO for such streams. This commit adds callbacks to AVFormatContext that default to avio_open2()/avio_close(), but can be overridden by the caller. All muxers and demuxers using AVIO are switched to using those callbacks instead of calling avio_open()/avio_close() directly. (de)muxers that use the URLProtocol layer directly instead of AVIO remain unconverted for now. This should be fixed in later commits.

Anton Khirnov committed 10 years ago

Commit 9f61abc1 parent 68395f815 files · +130 −68Browse files

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@@ -13,6 +13,10 @@ libavutil: 2015-08-28 · 12 unmodified lines
13		13
14	API changes, most recent first:	14	API changes, most recent first:
15		15
		16	2016-xx-xx - xxxxxxx - lavf 57.3.0 - avformat.h
		17	Add AVFormatContext.opaque, io_open and io_close, allowing custom IO
		18	for muxers and demuxers that open additional files.
		19
16	2015-xx-xx - xxxxxxx - lavc 57.12.0 - avcodec.h	20	2015-xx-xx - xxxxxxx - lavc 57.12.0 - avcodec.h
17	Add AVCodecDescriptor.profiles and avcodec_profile_name().	21	Add AVCodecDescriptor.profiles and avcodec_profile_name().
18		22

lavf: allow custom IO for all files

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