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mengshun / mp4v2

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MP4ReadProvider still causes direct call to stat64 #138

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. use mp4readprovider with custom open/read/seek/close implementations
2. do NOT use a file in the underlying file system (hence custom impls)
3. mp4v2 calls stat64 (according to strace) on the non-existing file and then 
fails to open the file (presumably because it doesn't get the file size)

What is the expected output? What do you see instead?
I had hoped you'd just run assuming 'infinite' file size until read fails;
alternatively, you need to modify the API to allow me to also provide a 'stat' 
replacement.

What version of the product are you using? On what operating system?
2.0.0, Debian.

Please provide any additional information below.
I was trying to use MP4v2 in GNU libextractor.

Original issue reported on code.google.com by groth...@gmail.com on 23 Aug 2012 at 9:24

GoogleCodeExporter commented 9 years ago 
Totally agree; this is something about the read/writer provider interfaces that 
I've found nonsensical; open/read/seek/close is available, but not file size of 
all things.

Original comment by kid...@gmail.com on 1 Oct 2012 at 2:38