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client API: clarify filename string encoding

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Admittedly, the behavior on Windows is not quite straightforward. The
behavior on the other platforms is equivalent to fopen().

Fixes #1585.

(cherry picked from commit a799a4c57f)
This commit is contained in:
wm4 2015-02-14 14:36:48 +01:00 committed by Diogo Franco (Kovensky)
parent 16c7de4aab
commit b476d21d0a
1 changed files with 24 additions and 0 deletions
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24
libmpv/client.h
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@ -121,6 +121,27 @@ extern "C" {
* process (such as ffmpeg OpenSSL support, or the mpv IPC code).
* - On memory exhaustion, mpv will kill the process.
*
* Encoding of filenames
* ---------------------
*
* mpv uses UTF-8 everywhere.
*
* On some platforms (like Linux), filenames actually do not have to be UTF-8;
* for this reason libmpv supports non-UTF-8 strings. libmpv uses what the
* kernel uses and does not recode filenames. At least on Linux, passing a
* string to libmpv is like passing a string to the fopen() function.
*
* On Windows, filenames are always UTF-8, libmpv converts between UTF-8 and
* UTF-16 when using win32 API functions. libmpv never uses or accepts
* filenames in the local 8 bit encoding. It does not use fopen() either;
* it uses _wfopen().
*
* On OS X, filenames and other strings taken/returned by libmpv can have
* inconsistent unicode normalization. This can sometimes lead to problems.
* You have to hope for the best.
*
* Also see the remarks for MPV_FORMAT_STRING.
*
* Embedding the video window
* --------------------------
*
@ -502,6 +523,9 @@ typedef enum mpv_format {
* and even filenames don't necessarily have to be in UTF-8 (at
* least on Linux). If you pass the strings to code that requires
* valid UTF-8, you have to sanitize it in some way.
* On Windows, filenames are always UTF-8, and libmpv converts
* between UTF-8 and UTF-16 when using win32 API functions. See
* the "Encoding of filenames" section for details.
*
* Example for reading:
*