mirror of https://github.com/mpv-player/mpv
eab3842d8b
Defining MPV_CPLUGIN_DYNAMIC_SYM during plugin compilation will replace mpv_* functions with function pointers. Those pointer will be initialized when loading the plugin. It is recommended to use this symbol table when targeting Windows. The loader does not have notion of global symbols. Loading cplugin into mpv process will not allow this plugin to call any of the symbols that may be available in other modules. Instead cplugin has to link explicitly to specific PE binary, libmpv-2.dll/mpv.exe or any other binary that may have linked mpv statically. This limits portability of cplugin as it would need to be compiled separately for each of target PE binary that includes mpv's symbols. Which in practice is unrealictis, as we want one cplugin to be loaded without those restrictions. Instead of linking to any PE binary, we create function pointer for all mpv's exported symbols. For convinience names of entrypoints are redefined to those pointer so no changes are required in cplugin source code, except defining MPV_CPLUGIN_DYNAMIC_SYM. Those function pointer are exported to make them available for mpv to init with correct values during runtime, before calling `mpv_open_cplugin`. Note that those pointer are decorated with `selectany` attribute, so no need to worry about multiple definitions, linker will keep only single instance. This fixes cplugin usability on Windows. Without any API changes, only recompilation with -DMPV_CPLUGIN_DYNAMIC_SYM is needed. |
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| .. | ||
| man | ||
| client-api-changes.rst | ||
| compatibility.rst | ||
| compile-windows.md | ||
| contribute.md | ||
| edl-mpv.rst | ||
| encoding.rst | ||
| interface-changes.rst | ||
| mplayer-changes.rst | ||
| release-policy.md | ||
| tech-overview.txt | ||