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209 lines
6 KiB
C
209 lines
6 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include "gstglwindow_x11_glx.h"
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#define GST_CAT_DEFAULT gst_gl_window_debug
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#define gst_gl_window_x11_glx_parent_class parent_class
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G_DEFINE_TYPE (GstGLWindowX11GLX, gst_gl_window_x11_glx,
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GST_GL_TYPE_WINDOW_X11);
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static guintptr gst_gl_window_x11_glx_get_gl_context (GstGLWindowX11 *
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window_x11);
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static void gst_gl_window_x11_glx_swap_buffers (GstGLWindowX11 * window_x11);
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static gboolean gst_gl_window_x11_glx_activate (GstGLWindowX11 * window_x11,
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gboolean activate);
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static gboolean gst_gl_window_x11_glx_create_context (GstGLWindowX11 *
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window_x11, GstGLAPI gl_api, guintptr external_gl_context, GError ** error);
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static void gst_gl_window_x11_glx_destroy_context (GstGLWindowX11 * window_x11);
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static gboolean gst_gl_window_x11_glx_choose_format (GstGLWindowX11 *
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window_x11, GError ** error);
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GstGLAPI gst_gl_window_x11_glx_get_gl_api (GstGLWindow * window);
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static gpointer gst_gl_window_x11_glx_get_proc_address (GstGLWindow * window,
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const gchar * name);
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static void
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gst_gl_window_x11_glx_class_init (GstGLWindowX11GLXClass * klass)
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{
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GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
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GstGLWindowX11Class *window_x11_class = (GstGLWindowX11Class *) klass;
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window_x11_class->get_gl_context =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_get_gl_context);
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window_x11_class->activate =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_activate);
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window_x11_class->create_context =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_create_context);
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window_x11_class->destroy_context =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_destroy_context);
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window_x11_class->choose_format =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_choose_format);
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window_x11_class->swap_buffers =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_swap_buffers);
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window_class->get_gl_api =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_get_gl_api);
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window_class->get_proc_address =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_glx_get_proc_address);
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}
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static void
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gst_gl_window_x11_glx_init (GstGLWindowX11GLX * window)
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{
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}
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/* Must be called in the gl thread */
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GstGLWindowX11GLX *
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gst_gl_window_x11_glx_new (void)
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{
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GstGLWindowX11GLX *window = g_object_new (GST_GL_TYPE_WINDOW_X11_GLX, NULL);
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return window;
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}
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static gboolean
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gst_gl_window_x11_glx_create_context (GstGLWindowX11 * window_x11,
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GstGLAPI gl_api, guintptr external_gl_context, GError ** error)
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{
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GstGLWindowX11GLX *window_glx;
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window_glx = GST_GL_WINDOW_X11_GLX (window_x11);
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window_glx->glx_context =
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glXCreateContext (window_x11->device, window_x11->visual_info,
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(GLXContext) external_gl_context, TRUE);
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if (!window_glx->glx_context) {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_CREATE_CONTEXT,
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"Failed to create opengl context (glXCreateContext failed)");
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goto failure;
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}
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GST_LOG ("gl context id: %ld", (gulong) window_glx->glx_context);
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return TRUE;
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failure:
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return FALSE;
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}
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static void
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gst_gl_window_x11_glx_destroy_context (GstGLWindowX11 * window_x11)
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{
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GstGLWindowX11GLX *window_glx;
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window_glx = GST_GL_WINDOW_X11_GLX (window_x11);
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glXDestroyContext (window_x11->device, window_glx->glx_context);
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window_glx->glx_context = 0;
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}
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static gboolean
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gst_gl_window_x11_glx_choose_format (GstGLWindowX11 * window_x11,
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GError ** error)
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{
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gint error_base;
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gint event_base;
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gint attrib[] = {
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GLX_RGBA,
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GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
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GLX_DEPTH_SIZE, 16,
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GLX_DOUBLEBUFFER,
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None
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};
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if (!glXQueryExtension (window_x11->device, &error_base, &event_base)) {
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g_set_error (error, GST_GL_WINDOW_ERROR,
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GST_GL_WINDOW_ERROR_RESOURCE_UNAVAILABLE, "No GLX extension");
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goto failure;
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}
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window_x11->visual_info = glXChooseVisual (window_x11->device,
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window_x11->screen_num, attrib);
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if (!window_x11->visual_info) {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_CONFIG,
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"Bad attributes in glXChooseVisual");
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goto failure;
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}
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return TRUE;
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failure:
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return FALSE;
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}
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static void
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gst_gl_window_x11_glx_swap_buffers (GstGLWindowX11 * window_x11)
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{
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glXSwapBuffers (window_x11->device, window_x11->internal_win_id);
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}
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static guintptr
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gst_gl_window_x11_glx_get_gl_context (GstGLWindowX11 * window_x11)
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{
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return (guintptr) GST_GL_WINDOW_X11_GLX (window_x11)->glx_context;
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}
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static gboolean
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gst_gl_window_x11_glx_activate (GstGLWindowX11 * window_x11, gboolean activate)
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{
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gboolean result;
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if (activate) {
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result = glXMakeCurrent (window_x11->device, window_x11->internal_win_id,
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GST_GL_WINDOW_X11_GLX (window_x11)->glx_context);
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} else {
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result = glXMakeCurrent (window_x11->device, None, NULL);
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}
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return result;
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}
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GstGLAPI
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gst_gl_window_x11_glx_get_gl_api (GstGLWindow * window)
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{
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return GST_GL_API_OPENGL;
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}
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static gpointer
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gst_gl_window_x11_glx_get_proc_address (GstGLWindow * window,
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const gchar * name)
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{
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gpointer result;
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if (!(result = glXGetProcAddressARB ((const GLubyte *) name))) {
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result = gst_gl_window_default_get_proc_address (window, name);
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}
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return result;
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}
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