diff options
Diffstat (limited to 'libmpv/client.h')
| -rw-r--r-- | libmpv/client.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/libmpv/client.h b/libmpv/client.h index f9c4420063..4199744ba7 100644 --- a/libmpv/client.h +++ b/libmpv/client.h @@ -28,10 +28,19 @@ #ifdef _WIN32 #define MPV_EXPORT __declspec(dllexport) +#define MPV_SELECTANY __declspec(selectany) #elif defined(__GNUC__) || defined(__clang__) #define MPV_EXPORT __attribute__((visibility("default"))) +#define MPV_SELECTANY #else #define MPV_EXPORT +#define MPV_SELECTANY +#endif + +#ifdef __cpp_decltype +#define MPV_DECLTYPE decltype +#else +#define MPV_DECLTYPE __typeof__ #endif #ifdef __cplusplus @@ -1888,6 +1897,127 @@ MPV_EXPORT int mpv_get_wakeup_pipe(mpv_handle *ctx); #endif +/** + * 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 unrealistic, as we want one cplugin to be loaded without those restrictions. + * + * Instead of linking to any PE binary, we create function pointers for all mpv's + * exported symbols. For convenience names of entrypoints are redefined to those + * pointer, so no changes are required in cplugin source code, except of 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 pointers are decorated with `selectany` attribute, so no need + * to worry about multiple definitions, linker will keep only single instance. + */ +#ifdef MPV_CPLUGIN_DYNAMIC_SYM + +#define MPV_DEFINE_SYM_PTR(name) \ + MPV_SELECTANY MPV_EXPORT \ + MPV_DECLTYPE(name) *pfn_##name; + +MPV_DEFINE_SYM_PTR(mpv_client_api_version) +#define mpv_client_api_version pfn_mpv_client_api_version +MPV_DEFINE_SYM_PTR(mpv_error_string) +#define mpv_error_string pfn_mpv_error_string +MPV_DEFINE_SYM_PTR(mpv_free) +#define mpv_free pfn_mpv_free +MPV_DEFINE_SYM_PTR(mpv_client_name) +#define mpv_client_name pfn_mpv_client_name +MPV_DEFINE_SYM_PTR(mpv_client_id) +#define mpv_client_id pfn_mpv_client_id +MPV_DEFINE_SYM_PTR(mpv_create) +#define mpv_create pfn_mpv_create +MPV_DEFINE_SYM_PTR(mpv_initialize) +#define mpv_initialize pfn_mpv_initialize +MPV_DEFINE_SYM_PTR(mpv_destroy) +#define mpv_destroy pfn_mpv_destroy +MPV_DEFINE_SYM_PTR(mpv_terminate_destroy) +#define mpv_terminate_destroy pfn_mpv_terminate_destroy +MPV_DEFINE_SYM_PTR(mpv_create_client) +#define mpv_create_client pfn_mpv_create_client +MPV_DEFINE_SYM_PTR(mpv_create_weak_client) +#define mpv_create_weak_client pfn_mpv_create_weak_client +MPV_DEFINE_SYM_PTR(mpv_load_config_file) +#define mpv_load_config_file pfn_mpv_load_config_file +MPV_DEFINE_SYM_PTR(mpv_get_time_us) +#define mpv_get_time_us pfn_mpv_get_time_us +MPV_DEFINE_SYM_PTR(mpv_free_node_contents) +#define mpv_free_node_contents pfn_mpv_free_node_contents +MPV_DEFINE_SYM_PTR(mpv_set_option) +#define mpv_set_option pfn_mpv_set_option +MPV_DEFINE_SYM_PTR(mpv_set_option_string) +#define mpv_set_option_string pfn_mpv_set_option_string +MPV_DEFINE_SYM_PTR(mpv_command) +#define mpv_command pfn_mpv_command +MPV_DEFINE_SYM_PTR(mpv_command_node) +#define mpv_command_node pfn_mpv_command_node +MPV_DEFINE_SYM_PTR(mpv_command_ret) +#define mpv_command_ret pfn_mpv_command_ret +MPV_DEFINE_SYM_PTR(mpv_command_string) +#define mpv_command_string pfn_mpv_command_string +MPV_DEFINE_SYM_PTR(mpv_command_async) +#define mpv_command_async pfn_mpv_command_async +MPV_DEFINE_SYM_PTR(mpv_command_node_async) +#define mpv_command_node_async pfn_mpv_command_node_async +MPV_DEFINE_SYM_PTR(mpv_abort_async_command) +#define mpv_abort_async_command pfn_mpv_abort_async_command +MPV_DEFINE_SYM_PTR(mpv_set_property) +#define mpv_set_property pfn_mpv_set_property +MPV_DEFINE_SYM_PTR(mpv_set_property_string) +#define mpv_set_property_string pfn_mpv_set_property_string +MPV_DEFINE_SYM_PTR(mpv_del_property) +#define mpv_del_property pfn_mpv_del_property +MPV_DEFINE_SYM_PTR(mpv_set_property_async) +#define mpv_set_property_async pfn_mpv_set_property_async +MPV_DEFINE_SYM_PTR(mpv_get_property) +#define mpv_get_property pfn_mpv_get_property +MPV_DEFINE_SYM_PTR(mpv_get_property_string) +#define mpv_get_property_string pfn_mpv_get_property_string +MPV_DEFINE_SYM_PTR(mpv_get_property_osd_string) +#define mpv_get_property_osd_string pfn_mpv_get_property_osd_string +MPV_DEFINE_SYM_PTR(mpv_get_property_async) +#define mpv_get_property_async pfn_mpv_get_property_async +MPV_DEFINE_SYM_PTR(mpv_observe_property) +#define mpv_observe_property pfn_mpv_observe_property +MPV_DEFINE_SYM_PTR(mpv_unobserve_property) +#define mpv_unobserve_property pfn_mpv_unobserve_property +MPV_DEFINE_SYM_PTR(mpv_event_name) +#define mpv_event_name pfn_mpv_event_name +MPV_DEFINE_SYM_PTR(mpv_event_to_node) +#define mpv_event_to_node pfn_mpv_event_to_node +MPV_DEFINE_SYM_PTR(mpv_request_event) +#define mpv_request_event pfn_mpv_request_event +MPV_DEFINE_SYM_PTR(mpv_request_log_messages) +#define mpv_request_log_messages pfn_mpv_request_log_messages +MPV_DEFINE_SYM_PTR(mpv_wait_event) +#define mpv_wait_event pfn_mpv_wait_event +MPV_DEFINE_SYM_PTR(mpv_wakeup) +#define mpv_wakeup pfn_mpv_wakeup +MPV_DEFINE_SYM_PTR(mpv_set_wakeup_callback) +#define mpv_set_wakeup_callback pfn_mpv_set_wakeup_callback +MPV_DEFINE_SYM_PTR(mpv_wait_async_requests) +#define mpv_wait_async_requests pfn_mpv_wait_async_requests +MPV_DEFINE_SYM_PTR(mpv_hook_add) +#define mpv_hook_add pfn_mpv_hook_add +MPV_DEFINE_SYM_PTR(mpv_hook_continue) +#define mpv_hook_continue pfn_mpv_hook_continue +MPV_DEFINE_SYM_PTR(mpv_get_wakeup_pipe) +#define mpv_get_wakeup_pipe pfn_mpv_get_wakeup_pipe + +#endif + #ifdef __cplusplus } #endif |