Initial commit
This commit is contained in:
hpdragon
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cmake_minimum_required(VERSION 3.10)
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set(PROJECT_NAME "flutter_gstreamer_player")
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project(${PROJECT_NAME} LANGUAGES CXX)
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set(CMAKE_CXX_STANDARD 17)
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add_compile_options(-fPIC)
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# This value is used when generating builds using this plugin, so it must
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# not be changed
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set(PLUGIN_NAME "flutter_gstreamer_player_plugin")
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# GStreamer libraries
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find_package(PkgConfig)
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pkg_search_module(GLIB REQUIRED glib-2.0)
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pkg_check_modules(GSTREAMER REQUIRED gstreamer-1.0)
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pkg_check_modules(GST_APP REQUIRED gstreamer-app-1.0)
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pkg_check_modules(GST_VIDEO REQUIRED gstreamer-video-1.0)
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include_directories(${GSTREAMER_INCLUDE_DIRS} ${GLIB2_INCLUDE_DIRS})
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# Custom GStreamer player
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add_library(GST_PLAYER STATIC
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"../gst_player/gst_player.cc"
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)
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include_directories(GST_PLAYER STATIC
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"../gst_player"
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)
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add_library(${PLUGIN_NAME} SHARED
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"flutter_gstreamer_player_plugin.cc"
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)
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apply_standard_settings(${PLUGIN_NAME})
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set_target_properties(${PLUGIN_NAME} PROPERTIES
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CXX_VISIBILITY_PRESET hidden)
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target_compile_definitions(${PLUGIN_NAME} PRIVATE FLUTTER_PLUGIN_IMPL)
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target_include_directories(${PLUGIN_NAME} INTERFACE
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"${CMAKE_CURRENT_SOURCE_DIR}/include")
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target_link_libraries(${PLUGIN_NAME} PRIVATE flutter)
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target_link_libraries(${PLUGIN_NAME} PRIVATE PkgConfig::GTK)
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target_link_libraries(${PLUGIN_NAME} PRIVATE ${GST_APP_LIBRARIES} ${GST_VIDEO_LIBRARIES})
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target_link_libraries(${PLUGIN_NAME} PRIVATE GST_PLAYER)
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# List of absolute paths to libraries that should be bundled with the plugin
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set(flutter_gstreamer_player_bundled_libraries
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""
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PARENT_SCOPE
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)
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#include "gst_player.h"
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#include "include/flutter_gstreamer_player/flutter_gstreamer_player_plugin.h"
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#include "include/flutter_gstreamer_player/flutter_gstreamer_player_video_outlet.h"
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#include <flutter_linux/flutter_linux.h>
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#include <gtk/gtk.h>
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#include <sys/utsname.h>
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#include <cstring>
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#define FLUTTER_GSTREAMER_PLAYER_PLUGIN(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), flutter_gstreamer_player_plugin_get_type(), \
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FlutterGstreamerPlayerPlugin))
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struct _FlutterGstreamerPlayerPlugin {
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GObject parent_instance;
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FlMethodChannel* method_channel;
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FlTextureRegistrar* texture_registrar;
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};
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std::unordered_map<int32_t, VideoOutlet*> g_video_outlets;
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G_DEFINE_TYPE(FlutterGstreamerPlayerPlugin, flutter_gstreamer_player_plugin, g_object_get_type())
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// Called when a method call is received from Flutter.
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static void flutter_gstreamer_player_plugin_handle_method_call(
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FlutterGstreamerPlayerPlugin* self,
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FlMethodCall* method_call) {
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g_autoptr(FlMethodResponse) response = nullptr;
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const gchar* method = fl_method_call_get_name(method_call);
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// TODO properly handle these method calls
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if (strcmp(method, "getPlatformVersion") == 0) {
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struct utsname uname_data = {};
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uname(&uname_data);
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g_autofree gchar *version = g_strdup_printf("Linux %s", uname_data.version);
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g_autoptr(FlValue) result = fl_value_new_string(version);
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(result));
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} else if (strcmp(method, "PlayerRegisterTexture") == 0) {
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auto arguments = fl_method_call_get_args(method_call);
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auto pipeline =
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fl_value_get_string(fl_value_lookup_string(arguments, "pipeline"));
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int32_t player_id =
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fl_value_get_int(fl_value_lookup_string(arguments, "playerId"));
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auto [it, added] = g_video_outlets.try_emplace(player_id, nullptr);
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GstPlayer* gstPlayer = g_players->Get(player_id);
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if (added) {
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it->second = video_outlet_new();
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FL_PIXEL_BUFFER_TEXTURE_GET_CLASS(it->second)->copy_pixels =
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video_outlet_copy_pixels;
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fl_texture_registrar_register_texture(self->texture_registrar,
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FL_TEXTURE(it->second));
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auto video_outlet_private = (VideoOutletPrivate*) video_outlet_get_instance_private(it->second);
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video_outlet_private->texture_id = reinterpret_cast<int64_t>(FL_TEXTURE(it->second));
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gstPlayer->onVideo([texture_registrar = self->texture_registrar,
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video_outlet_ptr = it->second,
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video_outlet_private = video_outlet_private]
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(uint8_t* frame, int32_t width, int32_t height) -> void {
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video_outlet_private->buffer = frame;
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video_outlet_private->video_width = width;
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video_outlet_private->video_height = height;
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fl_texture_registrar_mark_texture_frame_available(
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texture_registrar,
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FL_TEXTURE(video_outlet_ptr));
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});
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}
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gstPlayer->play(pipeline);
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response =
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FL_METHOD_RESPONSE(fl_method_success_response_new(fl_value_new_int(
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((VideoOutletPrivate*) video_outlet_get_instance_private(it->second))->texture_id
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)));
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} else if (strcmp(method, "dispose") == 0) {
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g_autoptr(FlValue) result = fl_value_new_bool(true);
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response = FL_METHOD_RESPONSE(fl_method_success_response_new(result));
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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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static void flutter_gstreamer_player_plugin_dispose(GObject* object) {
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G_OBJECT_CLASS(flutter_gstreamer_player_plugin_parent_class)->dispose(object);
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}
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static void flutter_gstreamer_player_plugin_class_init(FlutterGstreamerPlayerPluginClass* klass) {
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G_OBJECT_CLASS(klass)->dispose = flutter_gstreamer_player_plugin_dispose;
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}
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static void flutter_gstreamer_player_plugin_init(FlutterGstreamerPlayerPlugin* self) {}
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static void method_call_cb(FlMethodChannel* channel, FlMethodCall* method_call,
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gpointer user_data) {
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FlutterGstreamerPlayerPlugin* plugin = FLUTTER_GSTREAMER_PLAYER_PLUGIN(user_data);
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flutter_gstreamer_player_plugin_handle_method_call(plugin, method_call);
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}
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void flutter_gstreamer_player_plugin_register_with_registrar(FlPluginRegistrar* registrar) {
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FlutterGstreamerPlayerPlugin* plugin = FLUTTER_GSTREAMER_PLAYER_PLUGIN(
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g_object_new(flutter_gstreamer_player_plugin_get_type(), nullptr));
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g_autoptr(FlStandardMethodCodec) codec = fl_standard_method_codec_new();
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g_autoptr(FlMethodChannel) channel =
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fl_method_channel_new(fl_plugin_registrar_get_messenger(registrar),
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"flutter_gstreamer_player",
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FL_METHOD_CODEC(codec));
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plugin->texture_registrar =
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fl_plugin_registrar_get_texture_registrar(registrar);
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fl_method_channel_set_method_call_handler(channel, method_call_cb,
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g_object_ref(plugin),
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g_object_unref);
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g_object_unref(plugin);
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}
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@@ -0,0 +1,26 @@
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#ifndef FLUTTER_PLUGIN_FLUTTER_GSTREAMER_PLAYER_PLUGIN_H_
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#define FLUTTER_PLUGIN_FLUTTER_GSTREAMER_PLAYER_PLUGIN_H_
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#include <flutter_linux/flutter_linux.h>
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G_BEGIN_DECLS
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#ifdef FLUTTER_PLUGIN_IMPL
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#define FLUTTER_PLUGIN_EXPORT __attribute__((visibility("default")))
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#else
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#define FLUTTER_PLUGIN_EXPORT
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#endif
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typedef struct _FlutterGstreamerPlayerPlugin FlutterGstreamerPlayerPlugin;
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typedef struct {
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GObjectClass parent_class;
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} FlutterGstreamerPlayerPluginClass;
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FLUTTER_PLUGIN_EXPORT GType flutter_gstreamer_player_plugin_get_type();
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FLUTTER_PLUGIN_EXPORT void flutter_gstreamer_player_plugin_register_with_registrar(
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FlPluginRegistrar* registrar);
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G_END_DECLS
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#endif // FLUTTER_PLUGIN_FLUTTER_GSTREAMER_PLAYER_PLUGIN_H_
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#ifndef VIDEO_OUTLET_H_
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#define VIDEO_OUTLET_H_
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#include <flutter_linux/flutter_linux.h>
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#include <gtk/gtk.h>
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struct _VideoOutletClass {
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FlPixelBufferTextureClass parent_class;
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};
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struct VideoOutletPrivate {
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int64_t texture_id = 0;
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uint8_t* buffer = nullptr;
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int32_t video_width = 0;
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int32_t video_height = 0;
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};
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G_DECLARE_DERIVABLE_TYPE(VideoOutlet, video_outlet, MY_OPENGL, VIDEO_OUTLET,
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FlPixelBufferTexture)
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G_DEFINE_TYPE_WITH_CODE(VideoOutlet, video_outlet, fl_pixel_buffer_texture_get_type(), G_ADD_PRIVATE(VideoOutlet))
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static VideoOutlet* video_outlet_new() {
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return MY_OPENGL_VIDEO_OUTLET(g_object_new(video_outlet_get_type(), nullptr));
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}
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static gboolean video_outlet_copy_pixels(
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FlPixelBufferTexture* texture, const uint8_t** out_buffer, uint32_t* width,
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uint32_t* height, GError** error) {
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auto video_outlet_private = (VideoOutletPrivate*) video_outlet_get_instance_private(MY_OPENGL_VIDEO_OUTLET(texture));
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*out_buffer = video_outlet_private->buffer;
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*width = video_outlet_private->video_width;
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*height = video_outlet_private->video_height;
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return TRUE;
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}
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static void video_outlet_class_init(VideoOutletClass* klass) {
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FL_PIXEL_BUFFER_TEXTURE_CLASS(klass)->copy_pixels = video_outlet_copy_pixels;
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}
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static void video_outlet_init(VideoOutlet* self) {}
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#endif
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