303 lines
13 KiB
C++
303 lines
13 KiB
C++
#include "mpv_plugin.h"
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#include <cstring>
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#include "mpv_texture.h"
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struct _MpvPlugin {
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GObject parent_instance;
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FlPluginRegistrar* registrar;
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FlMethodChannel* method_channel;
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FlEventChannel* event_channel;
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FlTextureRegistrar* texture_registrar;
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std::unique_ptr<mpv::MpvPlayer> player;
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MpvTexture* texture; // owned via GObject ref
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gboolean visible;
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gboolean initialized;
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};
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G_DEFINE_TYPE(MpvPlugin, mpv_plugin, G_TYPE_OBJECT)
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// Forward declarations
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static void mpv_plugin_handle_method_call(FlMethodChannel* channel, FlMethodCall* method_call, gpointer user_data);
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static void send_event(MpvPlugin* self, FlValue* event) {
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if (self->event_channel) {
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g_autoptr(GError) error = nullptr;
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if (!fl_event_channel_send(self->event_channel, event, nullptr, &error)) {
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if (error != nullptr) {
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g_warning("Failed to send event: %s", error->message);
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}
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}
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}
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}
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static void mpv_plugin_dispose(GObject* object) {
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MpvPlugin* self = MPV_PLUGIN(object);
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// Texture must be disposed BEFORE player — mpv_texture_dispose needs
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// the player's EGL context to clean up GL resources.
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if (self->texture) {
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mpv_texture_dispose(self->texture);
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if (self->texture_registrar) {
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fl_texture_registrar_unregister_texture(self->texture_registrar, FL_TEXTURE(self->texture));
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}
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g_object_unref(self->texture);
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self->texture = nullptr;
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}
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if (self->player) {
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self->player->Dispose();
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self->player.reset();
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}
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g_clear_object(&self->method_channel);
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g_clear_object(&self->event_channel);
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g_clear_object(&self->registrar);
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G_OBJECT_CLASS(mpv_plugin_parent_class)->dispose(object);
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}
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static void mpv_plugin_class_init(MpvPluginClass* klass) { G_OBJECT_CLASS(klass)->dispose = mpv_plugin_dispose; }
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static void mpv_plugin_init(MpvPlugin* self) {
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self->visible = FALSE;
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self->initialized = FALSE;
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self->texture = nullptr;
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self->texture_registrar = nullptr;
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}
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MpvPlugin* mpv_plugin_new(FlPluginRegistrar* registrar) {
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MpvPlugin* self = MPV_PLUGIN(g_object_new(MPV_PLUGIN_TYPE, nullptr));
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self->registrar = FL_PLUGIN_REGISTRAR(g_object_ref(registrar));
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self->texture_registrar = fl_plugin_registrar_get_texture_registrar(registrar);
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self->player = std::make_unique<mpv::MpvPlayer>();
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g_autoptr(FlStandardMethodCodec) codec = fl_standard_method_codec_new();
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self->method_channel = fl_method_channel_new(
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fl_plugin_registrar_get_messenger(registrar), "com.plezy/mpv_player", FL_METHOD_CODEC(codec));
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fl_method_channel_set_method_call_handler(self->method_channel, mpv_plugin_handle_method_call, self, nullptr);
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self->event_channel = fl_event_channel_new(
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fl_plugin_registrar_get_messenger(registrar), "com.plezy/mpv_player/events", FL_METHOD_CODEC(codec));
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return self;
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}
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// Static reference to keep the plugin alive.
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static MpvPlugin* g_mpv_plugin = nullptr;
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void mpv_plugin_register_with_registrar(FlPluginRegistrar* registrar) { g_mpv_plugin = mpv_plugin_new(registrar); }
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/// Method call handler.
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static void mpv_plugin_handle_method_call(FlMethodChannel* channel, FlMethodCall* method_call, gpointer user_data) {
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(void)channel;
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MpvPlugin* self = MPV_PLUGIN(user_data);
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const gchar* method = fl_method_call_get_name(method_call);
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FlValue* args = fl_method_call_get_args(method_call);
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g_autoptr(FlMethodResponse) response = nullptr;
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if (strcmp(method, "initialize") == 0) {
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if (self->initialized && self->texture) {
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// Already initialized — return existing texture ID
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response =
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FL_METHOD_RESPONSE(fl_method_success_response_new(fl_value_new_int(mpv_texture_get_id(self->texture))));
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} else {
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// Create player if it was disposed or doesn't exist
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if (!self->player || self->player->IsDisposed()) {
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self->player = std::make_unique<mpv::MpvPlayer>();
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}
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if (self->player->Initialize()) {
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// Create the FlTextureGL and register it
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FlView* view = fl_plugin_registrar_get_view(self->registrar);
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self->texture = mpv_texture_new(self->player.get(), self->texture_registrar, view);
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fl_texture_registrar_register_texture(self->texture_registrar, FL_TEXTURE(self->texture));
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// Create the render context eagerly — mpv needs it BEFORE any
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// file is loaded, otherwise VO init fails with "No render context
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// set" and the video track is dropped entirely.
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self->player->InitRenderContext();
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// Set redraw callback: when mpv has a frame, mark texture available
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MpvTexture* tex = self->texture;
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self->player->SetRedrawCallback([tex]() { mpv_texture_mark_frame_available(tex); });
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self->initialized = TRUE;
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// Set up event callback
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self->player->SetEventCallback([self](FlValue* event) { send_event(self, event); });
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// Return the texture ID for the Dart Texture widget
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response =
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FL_METHOD_RESPONSE(fl_method_success_response_new(fl_value_new_int(mpv_texture_get_id(self->texture))));
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} else {
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response =
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FL_METHOD_RESPONSE(fl_method_error_response_new("INIT_FAILED", "Failed to initialize MPV player", nullptr));
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}
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}
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} else if (strcmp(method, "dispose") == 0) {
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// Disconnect and unregister texture FIRST — this stops Flutter from
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// calling populate(), preventing concurrent mpv_render_context_render()
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// during player disposal.
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if (self->texture) {
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mpv_texture_dispose(self->texture);
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fl_texture_registrar_unregister_texture(self->texture_registrar, FL_TEXTURE(self->texture));
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g_object_unref(self->texture);
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self->texture = nullptr;
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}
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if (self->player) {
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self->player->Dispose();
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// Don't reset player here — stray g_idle callbacks still reference it.
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// It will be replaced on next initialize() call.
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}
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self->initialized = FALSE;
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self->visible = FALSE;
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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} else if (strcmp(method, "command") == 0) {
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if (!self->player || !self->initialized) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("NOT_INITIALIZED", "Player not initialized", nullptr));
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} else {
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FlValue* args_value = fl_value_lookup_string(args, "args");
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if (args_value == nullptr || fl_value_get_type(args_value) != FL_VALUE_TYPE_LIST) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'args' list", nullptr));
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} else {
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std::vector<std::string> command_args;
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size_t len = fl_value_get_length(args_value);
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for (size_t i = 0; i < len; i++) {
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FlValue* item = fl_value_get_list_value(args_value, i);
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if (fl_value_get_type(item) == FL_VALUE_TYPE_STRING) {
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command_args.push_back(fl_value_get_string(item));
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}
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}
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g_object_ref(method_call);
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self->player->CommandAsync(command_args, [method_call](int error) {
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g_autoptr(FlMethodResponse) async_response = nullptr;
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if (error < 0) {
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async_response =
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FL_METHOD_RESPONSE(fl_method_error_response_new("COMMAND_FAILED", "MPV command failed", nullptr));
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} else {
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async_response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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}
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fl_method_call_respond(method_call, async_response, nullptr);
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g_object_unref(method_call);
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});
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return; // Response sent asynchronously
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}
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}
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} else if (strcmp(method, "setProperty") == 0) {
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if (!self->player || !self->initialized) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("NOT_INITIALIZED", "Player not initialized", nullptr));
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} else {
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FlValue* name_value = fl_value_lookup_string(args, "name");
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FlValue* value_value = fl_value_lookup_string(args, "value");
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if (name_value == nullptr || fl_value_get_type(name_value) != FL_VALUE_TYPE_STRING) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'name'", nullptr));
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} else if (value_value == nullptr || fl_value_get_type(value_value) != FL_VALUE_TYPE_STRING) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'value'", nullptr));
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} else {
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g_object_ref(method_call);
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self->player->SetPropertyAsync(
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fl_value_get_string(name_value), fl_value_get_string(value_value), [method_call](int error) {
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g_autoptr(FlMethodResponse) async_response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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fl_method_call_respond(method_call, async_response, nullptr);
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g_object_unref(method_call);
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});
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return; // Response sent asynchronously
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}
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}
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} else if (strcmp(method, "setLogLevel") == 0) {
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if (!self->player || !self->initialized) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("NOT_INITIALIZED", "Player not initialized", nullptr));
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} else {
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FlValue* level_value = fl_value_lookup_string(args, "level");
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if (level_value == nullptr || fl_value_get_type(level_value) != FL_VALUE_TYPE_STRING) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'level'", nullptr));
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} else {
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self->player->SetLogLevel(fl_value_get_string(level_value));
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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}
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}
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} else if (strcmp(method, "getProperty") == 0) {
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if (!self->player || !self->initialized) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("NOT_INITIALIZED", "Player not initialized", nullptr));
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} else {
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FlValue* name_value = fl_value_lookup_string(args, "name");
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if (name_value == nullptr || fl_value_get_type(name_value) != FL_VALUE_TYPE_STRING) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'name'", nullptr));
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} else {
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g_object_ref(method_call);
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self->player->GetPropertyAsync(
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fl_value_get_string(name_value), [method_call](int error, const std::string& value) {
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g_autoptr(FlMethodResponse) async_response = nullptr;
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if (error < 0 || value.empty()) {
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async_response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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} else {
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async_response = FL_METHOD_RESPONSE(fl_method_success_response_new(fl_value_new_string(value.c_str())));
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}
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fl_method_call_respond(method_call, async_response, nullptr);
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g_object_unref(method_call);
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});
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return; // Response sent asynchronously
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}
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}
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} else if (strcmp(method, "observeProperty") == 0) {
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if (!self->player || !self->initialized) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("NOT_INITIALIZED", "Player not initialized", nullptr));
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} else {
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FlValue* name_value = fl_value_lookup_string(args, "name");
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FlValue* format_value = fl_value_lookup_string(args, "format");
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FlValue* id_value = fl_value_lookup_string(args, "id");
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if (name_value == nullptr || fl_value_get_type(name_value) != FL_VALUE_TYPE_STRING) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'name'", nullptr));
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} else if (format_value == nullptr || fl_value_get_type(format_value) != FL_VALUE_TYPE_STRING) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'format'", nullptr));
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} else if (id_value == nullptr || fl_value_get_type(id_value) != FL_VALUE_TYPE_INT) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'id'", nullptr));
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} else {
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self->player->ObserveProperty(
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fl_value_get_string(name_value), fl_value_get_string(format_value),
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static_cast<int>(fl_value_get_int(id_value)));
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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}
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}
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} else if (strcmp(method, "setVisible") == 0) {
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FlValue* visible_value = fl_value_lookup_string(args, "visible");
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if (visible_value == nullptr || fl_value_get_type(visible_value) != FL_VALUE_TYPE_BOOL) {
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response = FL_METHOD_RESPONSE(fl_method_error_response_new("INVALID_ARGS", "Missing 'visible'", nullptr));
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} else {
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self->visible = fl_value_get_bool(visible_value);
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if (self->visible && self->texture) {
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// Trigger a frame render when becoming visible
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mpv_texture_mark_frame_available(self->texture);
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}
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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}
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} else if (strcmp(method, "updateFrame") == 0) {
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if (self->visible && self->texture) {
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mpv_texture_mark_frame_available(self->texture);
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}
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
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} else if (strcmp(method, "isInitialized") == 0) {
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gboolean initialized = self->player && self->initialized;
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(fl_value_new_bool(initialized)));
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} else {
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response = FL_METHOD_RESPONSE(fl_method_not_implemented_response_new());
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}
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fl_method_call_respond(method_call, response, nullptr);
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}
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