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459 lines
9.9 KiB
C
459 lines
9.9 KiB
C
/******************************************************************************
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Copyright (C) 2017 by Hugh Bailey <jim@obsproject.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include <obs.h>
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#include <util/dstr.h>
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#include <util/platform.h>
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#include <util/threading.h>
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#include <util/circlebuf.h>
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#include "obs-scripting-internal.h"
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#include "obs-scripting-callback.h"
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#include "obs-scripting-config.h"
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#if COMPILE_LUA
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extern obs_script_t *obs_lua_script_create(const char *path,
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obs_data_t *settings);
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extern bool obs_lua_script_load(obs_script_t *s);
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extern void obs_lua_script_unload(obs_script_t *s);
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extern void obs_lua_script_destroy(obs_script_t *s);
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extern void obs_lua_load(void);
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extern void obs_lua_unload(void);
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extern obs_properties_t *obs_lua_script_get_properties(obs_script_t *script);
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extern void obs_lua_script_update(obs_script_t *script, obs_data_t *settings);
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extern void obs_lua_script_save(obs_script_t *script);
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#endif
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#if COMPILE_PYTHON
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extern obs_script_t *obs_python_script_create(const char *path,
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obs_data_t *settings);
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extern bool obs_python_script_load(obs_script_t *s);
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extern void obs_python_script_unload(obs_script_t *s);
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extern void obs_python_script_destroy(obs_script_t *s);
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extern void obs_python_load(void);
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extern void obs_python_unload(void);
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extern obs_properties_t *obs_python_script_get_properties(obs_script_t *script);
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extern void obs_python_script_update(obs_script_t *script,
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obs_data_t *settings);
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extern void obs_python_script_save(obs_script_t *script);
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#endif
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pthread_mutex_t detach_mutex;
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struct script_callback *detached_callbacks;
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static struct dstr file_filter = {0};
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static bool scripting_loaded = false;
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static const char *supported_formats[] = {
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#if COMPILE_LUA
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"lua",
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#endif
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#if COMPILE_PYTHON
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"py",
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#endif
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NULL};
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/* -------------------------------------------- */
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static pthread_mutex_t defer_call_mutex;
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static struct circlebuf defer_call_queue;
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static bool defer_call_exit = false;
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static os_sem_t *defer_call_semaphore;
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static pthread_t defer_call_thread;
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struct defer_call {
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defer_call_cb call;
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void *cb;
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};
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static void *defer_thread(void *unused)
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{
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UNUSED_PARAMETER(unused);
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while (os_sem_wait(defer_call_semaphore) == 0) {
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struct defer_call info;
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pthread_mutex_lock(&defer_call_mutex);
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if (defer_call_exit) {
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pthread_mutex_unlock(&defer_call_mutex);
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return NULL;
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}
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circlebuf_pop_front(&defer_call_queue, &info, sizeof(info));
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pthread_mutex_unlock(&defer_call_mutex);
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info.call(info.cb);
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}
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return NULL;
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}
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void defer_call_post(defer_call_cb call, void *cb)
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{
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struct defer_call info;
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info.call = call;
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info.cb = cb;
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pthread_mutex_lock(&defer_call_mutex);
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if (!defer_call_exit)
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circlebuf_push_back(&defer_call_queue, &info, sizeof(info));
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pthread_mutex_unlock(&defer_call_mutex);
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os_sem_post(defer_call_semaphore);
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}
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/* -------------------------------------------- */
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bool obs_scripting_load(void)
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{
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circlebuf_init(&defer_call_queue);
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if (pthread_mutex_init(&detach_mutex, NULL) != 0) {
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return false;
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}
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if (pthread_mutex_init(&defer_call_mutex, NULL) != 0) {
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pthread_mutex_destroy(&detach_mutex);
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return false;
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}
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if (os_sem_init(&defer_call_semaphore, 0) != 0) {
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pthread_mutex_destroy(&defer_call_mutex);
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pthread_mutex_destroy(&detach_mutex);
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return false;
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}
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if (pthread_create(&defer_call_thread, NULL, defer_thread, NULL) != 0) {
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os_sem_destroy(defer_call_semaphore);
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pthread_mutex_destroy(&defer_call_mutex);
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pthread_mutex_destroy(&detach_mutex);
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return false;
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}
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#if COMPILE_LUA
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obs_lua_load();
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#endif
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#if COMPILE_PYTHON
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obs_python_load();
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#ifndef _WIN32 /* don't risk python startup load issues on windows */
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obs_scripting_load_python(NULL);
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#endif
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#endif
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scripting_loaded = true;
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return true;
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}
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void obs_scripting_unload(void)
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{
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if (!scripting_loaded)
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return;
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/* ---------------------- */
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#if COMPILE_LUA
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obs_lua_unload();
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#endif
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#if COMPILE_PYTHON
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obs_python_unload();
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#endif
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dstr_free(&file_filter);
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/* ---------------------- */
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int total_detached = 0;
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pthread_mutex_lock(&detach_mutex);
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struct script_callback *cur = detached_callbacks;
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while (cur) {
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struct script_callback *next = cur->next;
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just_free_script_callback(cur);
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cur = next;
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++total_detached;
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}
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pthread_mutex_unlock(&detach_mutex);
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pthread_mutex_destroy(&detach_mutex);
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blog(LOG_INFO, "[Scripting] Total detached callbacks: %d",
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total_detached);
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/* ---------------------- */
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pthread_mutex_lock(&defer_call_mutex);
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/* TODO */
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defer_call_exit = true;
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circlebuf_free(&defer_call_queue);
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pthread_mutex_unlock(&defer_call_mutex);
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os_sem_post(defer_call_semaphore);
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pthread_join(defer_call_thread, NULL);
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pthread_mutex_destroy(&defer_call_mutex);
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os_sem_destroy(defer_call_semaphore);
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scripting_loaded = false;
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}
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const char **obs_scripting_supported_formats(void)
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{
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return supported_formats;
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}
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static inline bool pointer_valid(const void *x, const char *name,
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const char *func)
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{
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if (!x) {
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blog(LOG_WARNING, "obs-scripting: [%s] %s is null", func, name);
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return false;
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}
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return true;
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}
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#define ptr_valid(x) pointer_valid(x, #x, __FUNCTION__)
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obs_script_t *obs_script_create(const char *path, obs_data_t *settings)
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{
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obs_script_t *script = NULL;
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const char *ext;
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if (!scripting_loaded)
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return NULL;
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if (!ptr_valid(path))
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return NULL;
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ext = strrchr(path, '.');
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if (!ext)
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return NULL;
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#if COMPILE_LUA
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if (strcmp(ext, ".lua") == 0) {
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script = obs_lua_script_create(path, settings);
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} else
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#endif
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#if COMPILE_PYTHON
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if (strcmp(ext, ".py") == 0) {
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script = obs_python_script_create(path, settings);
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} else
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#endif
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{
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blog(LOG_WARNING, "Unsupported/unknown script type: %s", path);
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}
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return script;
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}
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const char *obs_script_get_description(const obs_script_t *script)
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{
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return ptr_valid(script) ? script->desc.array : NULL;
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}
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const char *obs_script_get_path(const obs_script_t *script)
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{
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const char *path = ptr_valid(script) ? script->path.array : "";
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return path ? path : "";
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}
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const char *obs_script_get_file(const obs_script_t *script)
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{
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const char *file = ptr_valid(script) ? script->file.array : "";
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return file ? file : "";
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}
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enum obs_script_lang obs_script_get_lang(const obs_script_t *script)
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{
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return ptr_valid(script) ? script->type : OBS_SCRIPT_LANG_UNKNOWN;
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}
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obs_data_t *obs_script_get_settings(obs_script_t *script)
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{
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obs_data_t *settings;
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if (!ptr_valid(script))
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return NULL;
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settings = script->settings;
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obs_data_addref(settings);
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return settings;
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}
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obs_properties_t *obs_script_get_properties(obs_script_t *script)
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{
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obs_properties_t *props = NULL;
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if (!ptr_valid(script))
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return NULL;
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#if COMPILE_LUA
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if (script->type == OBS_SCRIPT_LANG_LUA) {
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props = obs_lua_script_get_properties(script);
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goto out;
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}
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#endif
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#if COMPILE_PYTHON
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if (script->type == OBS_SCRIPT_LANG_PYTHON) {
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props = obs_python_script_get_properties(script);
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goto out;
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}
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#endif
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out:
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if (!props)
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props = obs_properties_create();
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return props;
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}
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obs_data_t *obs_script_save(obs_script_t *script)
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{
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obs_data_t *settings;
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if (!ptr_valid(script))
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return NULL;
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#if COMPILE_LUA
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if (script->type == OBS_SCRIPT_LANG_LUA) {
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obs_lua_script_save(script);
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goto out;
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}
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#endif
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#if COMPILE_PYTHON
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if (script->type == OBS_SCRIPT_LANG_PYTHON) {
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obs_python_script_save(script);
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goto out;
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}
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#endif
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out:
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settings = script->settings;
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obs_data_addref(settings);
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return settings;
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}
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static void clear_queue_signal(void *p_event)
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{
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os_event_t *event = p_event;
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os_event_signal(event);
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}
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static void clear_call_queue(void)
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{
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os_event_t *event;
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if (os_event_init(&event, OS_EVENT_TYPE_AUTO) != 0)
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return;
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defer_call_post(clear_queue_signal, event);
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os_event_wait(event);
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os_event_destroy(event);
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}
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void obs_script_update(obs_script_t *script, obs_data_t *settings)
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{
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if (!ptr_valid(script))
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return;
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#if COMPILE_LUA
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if (script->type == OBS_SCRIPT_LANG_LUA) {
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obs_lua_script_update(script, settings);
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}
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#endif
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#if COMPILE_PYTHON
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if (script->type == OBS_SCRIPT_LANG_PYTHON) {
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obs_python_script_update(script, settings);
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}
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#endif
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}
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bool obs_script_reload(obs_script_t *script)
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{
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if (!scripting_loaded)
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return false;
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if (!ptr_valid(script))
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return false;
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#if COMPILE_LUA
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if (script->type == OBS_SCRIPT_LANG_LUA) {
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obs_lua_script_unload(script);
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clear_call_queue();
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obs_lua_script_load(script);
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goto out;
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}
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#endif
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#if COMPILE_PYTHON
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if (script->type == OBS_SCRIPT_LANG_PYTHON) {
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obs_python_script_unload(script);
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clear_call_queue();
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obs_python_script_load(script);
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goto out;
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}
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#endif
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out:
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return script->loaded;
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}
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bool obs_script_loaded(const obs_script_t *script)
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{
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return ptr_valid(script) ? script->loaded : false;
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}
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void obs_script_destroy(obs_script_t *script)
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{
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if (!script)
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return;
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#if COMPILE_LUA
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if (script->type == OBS_SCRIPT_LANG_LUA) {
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obs_lua_script_unload(script);
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obs_lua_script_destroy(script);
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return;
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}
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#endif
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#if COMPILE_PYTHON
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if (script->type == OBS_SCRIPT_LANG_PYTHON) {
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obs_python_script_unload(script);
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obs_python_script_destroy(script);
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return;
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}
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#endif
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}
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#if !COMPILE_PYTHON
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bool obs_scripting_load_python(const char *python_path)
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{
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UNUSED_PARAMETER(python_path);
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return false;
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}
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bool obs_scripting_python_loaded(void)
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{
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return false;
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}
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bool obs_scripting_python_runtime_linked(void)
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{
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return (bool)true;
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}
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#endif
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