diff options
Diffstat (limited to 'ext/gtk/gtkgstglwidget.c')
| -rw-r--r-- | ext/gtk/gtkgstglwidget.c | 558 |
1 files changed, 0 insertions, 558 deletions
diff --git a/ext/gtk/gtkgstglwidget.c b/ext/gtk/gtkgstglwidget.c deleted file mode 100644 index 76c46c9c8..000000000 --- a/ext/gtk/gtkgstglwidget.c +++ /dev/null @@ -1,558 +0,0 @@ -/* - * GStreamer - * Copyright (C) 2015 Matthew Waters <matthew@centricular.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> - -#include "gtkgstglwidget.h" -#include "gstgtkutils.h" -#include <gst/gl/gstglfuncs.h> -#include <gst/video/video.h> - -#if GST_GL_HAVE_WINDOW_X11 && GST_GL_HAVE_PLATFORM_GLX && defined (GDK_WINDOWING_X11) -#include <gdk/gdkx.h> -#include <gst/gl/x11/gstgldisplay_x11.h> -#endif - -#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (GDK_WINDOWING_WAYLAND) -#include <gdk/gdkwayland.h> -#include <gst/gl/wayland/gstgldisplay_wayland.h> -#endif - -/** - * SECTION:gtkgstglwidget - * @title: GtkGstGlWidget - * @short_description: a #GtkGLArea that renders GStreamer video #GstBuffers - * @see_also: #GtkGLArea, #GstBuffer - * - * #GtkGstGLWidget is an #GtkWidget that renders GStreamer video buffers. - */ - -#define GST_CAT_DEFAULT gtk_gst_gl_widget_debug -GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); - -G_DEFINE_TYPE_WITH_CODE (GtkGstGLWidget, gtk_gst_gl_widget, GTK_TYPE_GL_AREA, - GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "gtkgstglwidget", 0, - "Gtk Gst GL Widget");); - -#define GTK_GST_GL_WIDGET_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \ - GTK_TYPE_GST_GL_WIDGET, GtkGstGLWidgetPrivate)) - -struct _GtkGstGLWidgetPrivate -{ - gboolean initted; - GstGLDisplay *display; - GdkGLContext *gdk_context; - GstGLContext *other_context; - GstGLContext *context; - GstGLUpload *upload; - GstGLShader *shader; - GLuint vao; - GLuint vertex_buffer; - GLint attr_position; - GLint attr_texture; - GLuint current_tex; - GstGLOverlayCompositor *overlay_compositor; -}; - -static const GLfloat vertices[] = { - 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, - -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, - -1.0f, -1.0f, 0.0f, 0.0f, 1.0f, - 1.0f, -1.0f, 0.0f, 1.0f, 1.0f -}; - -static void -gtk_gst_gl_widget_bind_buffer (GtkGstGLWidget * gst_widget) -{ - GtkGstGLWidgetPrivate *priv = gst_widget->priv; - const GstGLFuncs *gl = priv->context->gl_vtable; - - gl->BindBuffer (GL_ARRAY_BUFFER, priv->vertex_buffer); - - /* Load the vertex position */ - gl->VertexAttribPointer (priv->attr_position, 3, GL_FLOAT, GL_FALSE, - 5 * sizeof (GLfloat), (void *) 0); - - /* Load the texture coordinate */ - gl->VertexAttribPointer (priv->attr_texture, 2, GL_FLOAT, GL_FALSE, - 5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat))); - - gl->EnableVertexAttribArray (priv->attr_position); - gl->EnableVertexAttribArray (priv->attr_texture); -} - -static void -gtk_gst_gl_widget_unbind_buffer (GtkGstGLWidget * gst_widget) -{ - GtkGstGLWidgetPrivate *priv = gst_widget->priv; - const GstGLFuncs *gl = priv->context->gl_vtable; - - gl->BindBuffer (GL_ARRAY_BUFFER, 0); - - gl->DisableVertexAttribArray (priv->attr_position); - gl->DisableVertexAttribArray (priv->attr_texture); -} - -static void -gtk_gst_gl_widget_init_redisplay (GtkGstGLWidget * gst_widget) -{ - GtkGstGLWidgetPrivate *priv = gst_widget->priv; - const GstGLFuncs *gl = priv->context->gl_vtable; - GError *error = NULL; - - gst_gl_insert_debug_marker (priv->other_context, "initializing redisplay"); - if (!(priv->shader = gst_gl_shader_new_default (priv->context, &error))) { - GST_ERROR ("Failed to initialize shader: %s", error->message); - return; - } - - priv->attr_position = - gst_gl_shader_get_attribute_location (priv->shader, "a_position"); - priv->attr_texture = - gst_gl_shader_get_attribute_location (priv->shader, "a_texcoord"); - - if (gl->GenVertexArrays) { - gl->GenVertexArrays (1, &priv->vao); - gl->BindVertexArray (priv->vao); - } - - gl->GenBuffers (1, &priv->vertex_buffer); - gl->BindBuffer (GL_ARRAY_BUFFER, priv->vertex_buffer); - gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices, - GL_STATIC_DRAW); - - if (gl->GenVertexArrays) { - gtk_gst_gl_widget_bind_buffer (gst_widget); - gl->BindVertexArray (0); - } - - gl->BindBuffer (GL_ARRAY_BUFFER, 0); - - priv->overlay_compositor = - gst_gl_overlay_compositor_new (priv->other_context); - - priv->initted = TRUE; -} - -static void -_redraw_texture (GtkGstGLWidget * gst_widget, guint tex) -{ - GtkGstGLWidgetPrivate *priv = gst_widget->priv; - const GstGLFuncs *gl = priv->context->gl_vtable; - const GLushort indices[] = { 0, 1, 2, 0, 2, 3 }; - - if (gst_widget->base.force_aspect_ratio) { - GstVideoRectangle src, dst, result; - gint widget_width, widget_height, widget_scale; - - gl->ClearColor (0.0, 0.0, 0.0, 0.0); - gl->Clear (GL_COLOR_BUFFER_BIT); - - widget_scale = gtk_widget_get_scale_factor ((GtkWidget *) gst_widget); - widget_width = gtk_widget_get_allocated_width ((GtkWidget *) gst_widget); - widget_height = gtk_widget_get_allocated_height ((GtkWidget *) gst_widget); - - src.x = 0; - src.y = 0; - src.w = gst_widget->base.display_width; - src.h = gst_widget->base.display_height; - - dst.x = 0; - dst.y = 0; - dst.w = widget_width * widget_scale; - dst.h = widget_height * widget_scale; - - gst_video_sink_center_rect (src, dst, &result, TRUE); - - gl->Viewport (result.x, result.y, result.w, result.h); - } - - gst_gl_shader_use (priv->shader); - - if (gl->BindVertexArray) - gl->BindVertexArray (priv->vao); - gtk_gst_gl_widget_bind_buffer (gst_widget); - - gl->ActiveTexture (GL_TEXTURE0); - gl->BindTexture (GL_TEXTURE_2D, tex); - gst_gl_shader_set_uniform_1i (priv->shader, "tex", 0); - - gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices); - - if (gl->BindVertexArray) - gl->BindVertexArray (0); - gtk_gst_gl_widget_unbind_buffer (gst_widget); - - gl->BindTexture (GL_TEXTURE_2D, 0); -} - -static inline void -_draw_black (GstGLContext * context) -{ - const GstGLFuncs *gl = context->gl_vtable; - - gst_gl_insert_debug_marker (context, "no buffer. rendering black"); - gl->ClearColor (0.0, 0.0, 0.0, 0.0); - gl->Clear (GL_COLOR_BUFFER_BIT); -} - -static gboolean -gtk_gst_gl_widget_render (GtkGLArea * widget, GdkGLContext * context) -{ - GtkGstGLWidgetPrivate *priv = GTK_GST_GL_WIDGET (widget)->priv; - GtkGstBaseWidget *base_widget = GTK_GST_BASE_WIDGET (widget); - - GTK_GST_BASE_WIDGET_LOCK (widget); - - if (!priv->context || !priv->other_context) - goto done; - - gst_gl_context_activate (priv->other_context, TRUE); - - if (!priv->initted) - gtk_gst_gl_widget_init_redisplay (GTK_GST_GL_WIDGET (widget)); - - if (!priv->initted || !base_widget->negotiated) { - _draw_black (priv->other_context); - goto done; - } - - /* Upload latest buffer */ - if (base_widget->pending_buffer) { - GstBuffer *buffer = base_widget->pending_buffer; - GstVideoFrame gl_frame; - GstGLSyncMeta *sync_meta; - - if (!gst_video_frame_map (&gl_frame, &base_widget->v_info, buffer, - GST_MAP_READ | GST_MAP_GL)) { - _draw_black (priv->other_context); - goto done; - } - - priv->current_tex = *(guint *) gl_frame.data[0]; - gst_gl_insert_debug_marker (priv->other_context, "redrawing texture %u", - priv->current_tex); - - gst_gl_overlay_compositor_upload_overlays (priv->overlay_compositor, - buffer); - - sync_meta = gst_buffer_get_gl_sync_meta (buffer); - if (sync_meta) { - /* XXX: the set_sync() seems to be needed for resizing */ - gst_gl_sync_meta_set_sync_point (sync_meta, priv->context); - gst_gl_sync_meta_wait (sync_meta, priv->other_context); - } - - gst_video_frame_unmap (&gl_frame); - - if (base_widget->buffer) - gst_buffer_unref (base_widget->buffer); - - /* Keep the buffer to ensure current_tex stay valid */ - base_widget->buffer = buffer; - base_widget->pending_buffer = NULL; - } - - GST_DEBUG ("rendering buffer %p with gdk context %p", - base_widget->buffer, context); - - _redraw_texture (GTK_GST_GL_WIDGET (widget), priv->current_tex); - gst_gl_overlay_compositor_draw_overlays (priv->overlay_compositor); - - gst_gl_insert_debug_marker (priv->other_context, "texture %u redrawn", - priv->current_tex); - -done: - if (priv->other_context) - gst_gl_context_activate (priv->other_context, FALSE); - - GTK_GST_BASE_WIDGET_UNLOCK (widget); - return FALSE; -} - -static void -_reset_gl (GtkGstGLWidget * gst_widget) -{ - GtkGstGLWidgetPrivate *priv = gst_widget->priv; - const GstGLFuncs *gl = priv->other_context->gl_vtable; - - if (!priv->gdk_context) - priv->gdk_context = gtk_gl_area_get_context (GTK_GL_AREA (gst_widget)); - - if (priv->gdk_context == NULL) - return; - - gdk_gl_context_make_current (priv->gdk_context); - gst_gl_context_activate (priv->other_context, TRUE); - - if (priv->vao) { - gl->DeleteVertexArrays (1, &priv->vao); - priv->vao = 0; - } - - if (priv->vertex_buffer) { - gl->DeleteBuffers (1, &priv->vertex_buffer); - priv->vertex_buffer = 0; - } - - if (priv->upload) { - gst_object_unref (priv->upload); - priv->upload = NULL; - } - - if (priv->shader) { - gst_object_unref (priv->shader); - priv->shader = NULL; - } - - if (priv->overlay_compositor) - gst_object_unref (priv->overlay_compositor); - - gst_gl_context_activate (priv->other_context, FALSE); - - gst_object_unref (priv->other_context); - priv->other_context = NULL; - - gdk_gl_context_clear_current (); - - g_object_unref (priv->gdk_context); - priv->gdk_context = NULL; -} - -static void -gtk_gst_gl_widget_finalize (GObject * object) -{ - GtkGstGLWidgetPrivate *priv = GTK_GST_GL_WIDGET (object)->priv; - GtkGstBaseWidget *base_widget = GTK_GST_BASE_WIDGET (object); - - if (priv->other_context) - gst_gtk_invoke_on_main ((GThreadFunc) _reset_gl, base_widget); - - if (priv->context) - gst_object_unref (priv->context); - - if (priv->display) - gst_object_unref (priv->display); - - gtk_gst_base_widget_finalize (object); - G_OBJECT_CLASS (gtk_gst_gl_widget_parent_class)->finalize (object); -} - -static void -gtk_gst_gl_widget_class_init (GtkGstGLWidgetClass * klass) -{ - GObjectClass *gobject_klass = (GObjectClass *) klass; - GtkGLAreaClass *gl_widget_klass = (GtkGLAreaClass *) klass; - - g_type_class_add_private (klass, sizeof (GtkGstGLWidgetPrivate)); - gtk_gst_base_widget_class_init (GTK_GST_BASE_WIDGET_CLASS (klass)); - - gobject_klass->finalize = gtk_gst_gl_widget_finalize; - gl_widget_klass->render = gtk_gst_gl_widget_render; -} - -static void -gtk_gst_gl_widget_init (GtkGstGLWidget * gst_widget) -{ - GtkGstBaseWidget *base_widget = GTK_GST_BASE_WIDGET (gst_widget); - GdkDisplay *display; - GtkGstGLWidgetPrivate *priv; - - gtk_gst_base_widget_init (base_widget); - - gst_widget->priv = priv = GTK_GST_GL_WIDGET_GET_PRIVATE (gst_widget); - - display = gdk_display_get_default (); - -#if GST_GL_HAVE_WINDOW_X11 && GST_GL_HAVE_PLATFORM_GLX && defined (GDK_WINDOWING_X11) - if (GDK_IS_X11_DISPLAY (display)) - priv->display = (GstGLDisplay *) - gst_gl_display_x11_new_with_display (gdk_x11_display_get_xdisplay - (display)); -#endif -#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (GDK_WINDOWING_WAYLAND) - if (GDK_IS_WAYLAND_DISPLAY (display)) { - struct wl_display *wayland_display = - gdk_wayland_display_get_wl_display (display); - priv->display = (GstGLDisplay *) - gst_gl_display_wayland_new_with_display (wayland_display); - } -#endif - - (void) display; - - if (!priv->display) - priv->display = gst_gl_display_new (); - - gtk_gl_area_set_has_alpha (GTK_GL_AREA (gst_widget), - !base_widget->ignore_alpha); -} - -static void -_get_gl_context (GtkGstGLWidget * gst_widget) -{ - GtkGstGLWidgetPrivate *priv = gst_widget->priv; - GstGLPlatform platform; - GstGLAPI gl_api; - guintptr gl_handle; - - gtk_widget_realize (GTK_WIDGET (gst_widget)); - - if (priv->other_context) - gst_object_unref (priv->other_context); - priv->other_context = NULL; - - if (priv->gdk_context) - g_object_unref (priv->gdk_context); - - priv->gdk_context = gtk_gl_area_get_context (GTK_GL_AREA (gst_widget)); - if (priv->gdk_context == NULL) { - GError *error = gtk_gl_area_get_error (GTK_GL_AREA (gst_widget)); - - GST_ERROR_OBJECT (gst_widget, "Error creating GdkGLContext : %s", - error ? error->message : "No error set by Gdk"); - g_clear_error (&error); - return; - } - - g_object_ref (priv->gdk_context); - - gdk_gl_context_make_current (priv->gdk_context); - -#if GST_GL_HAVE_WINDOW_X11 && GST_GL_HAVE_PLATFORM_GLX && defined (GDK_WINDOWING_X11) - if (GST_IS_GL_DISPLAY_X11 (priv->display)) { - platform = GST_GL_PLATFORM_GLX; - gl_api = gst_gl_context_get_current_gl_api (platform, NULL, NULL); - gl_handle = gst_gl_context_get_current_gl_context (platform); - if (gl_handle) - priv->other_context = - gst_gl_context_new_wrapped (priv->display, gl_handle, - platform, gl_api); - } -#endif -#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (GDK_WINDOWING_WAYLAND) - if (GST_IS_GL_DISPLAY_WAYLAND (priv->display)) { - platform = GST_GL_PLATFORM_EGL; - gl_api = gst_gl_context_get_current_gl_api (platform, NULL, NULL); - gl_handle = gst_gl_context_get_current_gl_context (platform); - if (gl_handle) - priv->other_context = - gst_gl_context_new_wrapped (priv->display, gl_handle, - platform, gl_api); - } -#endif - - (void) platform; - (void) gl_api; - (void) gl_handle; - - if (priv->other_context) { - GError *error = NULL; - - gst_gl_context_activate (priv->other_context, TRUE); - if (!gst_gl_context_fill_info (priv->other_context, &error)) { - GST_ERROR ("failed to retrieve gdk context info: %s", error->message); - g_clear_error (&error); - g_object_unref (priv->other_context); - priv->other_context = NULL; - } else { - gst_gl_context_activate (priv->other_context, FALSE); - } - } -} - -GtkWidget * -gtk_gst_gl_widget_new (void) -{ - return (GtkWidget *) g_object_new (GTK_TYPE_GST_GL_WIDGET, NULL); -} - -gboolean -gtk_gst_gl_widget_init_winsys (GtkGstGLWidget * gst_widget) -{ - GtkGstGLWidgetPrivate *priv = gst_widget->priv; - GError *error = NULL; - - g_return_val_if_fail (GTK_IS_GST_GL_WIDGET (gst_widget), FALSE); - g_return_val_if_fail (priv->display != NULL, FALSE); - - GTK_GST_BASE_WIDGET_LOCK (gst_widget); - - if (priv->display && priv->gdk_context && priv->other_context) { - GTK_GST_BASE_WIDGET_UNLOCK (gst_widget); - return TRUE; - } - - if (!priv->other_context) { - GTK_GST_BASE_WIDGET_UNLOCK (gst_widget); - gst_gtk_invoke_on_main ((GThreadFunc) _get_gl_context, gst_widget); - GTK_GST_BASE_WIDGET_LOCK (gst_widget); - } - - if (!GST_IS_GL_CONTEXT (priv->other_context)) { - GTK_GST_BASE_WIDGET_UNLOCK (gst_widget); - return FALSE; - } - - GST_OBJECT_LOCK (priv->display); - if (!gst_gl_display_create_context (priv->display, priv->other_context, - &priv->context, &error)) { - g_clear_error (&error); - GST_OBJECT_UNLOCK (priv->display); - GTK_GST_BASE_WIDGET_UNLOCK (gst_widget); - return FALSE; - } - gst_gl_display_add_context (priv->display, priv->context); - GST_OBJECT_UNLOCK (priv->display); - - GTK_GST_BASE_WIDGET_UNLOCK (gst_widget); - return TRUE; -} - -GstGLContext * -gtk_gst_gl_widget_get_gtk_context (GtkGstGLWidget * gst_widget) -{ - if (!gst_widget->priv->other_context) - return NULL; - - return gst_object_ref (gst_widget->priv->other_context); -} - -GstGLContext * -gtk_gst_gl_widget_get_context (GtkGstGLWidget * gst_widget) -{ - if (!gst_widget->priv->context) - return NULL; - - return gst_object_ref (gst_widget->priv->context); -} - -GstGLDisplay * -gtk_gst_gl_widget_get_display (GtkGstGLWidget * gst_widget) -{ - if (!gst_widget->priv->display) - return NULL; - - return gst_object_ref (gst_widget->priv->display); -} |