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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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362 lines
11 KiB
C
362 lines
11 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 <gst/gl/gl.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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#define GST_GL_WINDOW_X11_GLX_GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW_X11_GLX, GstGLWindowX11GLXPrivate))
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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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struct _GstGLWindowX11GLXPrivate
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{
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int glx_major;
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int glx_minor;
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GstGLAPI context_api;
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GLXFBConfig *fbconfigs;
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GLXContext (*glXCreateContextAttribsARB) (Display *, GLXFBConfig,
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GLXContext, Bool, const int *);
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};
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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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g_type_class_add_private (klass, sizeof (GstGLWindowX11GLXPrivate));
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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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window->priv = GST_GL_WINDOW_X11_GLX_GET_PRIVATE (window);
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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 inline void
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_describe_fbconfig (Display * display, GLXFBConfig config)
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{
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int val;
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glXGetFBConfigAttrib (display, config, GLX_FBCONFIG_ID, &val);
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GST_DEBUG ("ID: %d", val);
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glXGetFBConfigAttrib (display, config, GLX_DOUBLEBUFFER, &val);
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GST_DEBUG ("double buffering: %d", val);
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glXGetFBConfigAttrib (display, config, GLX_RED_SIZE, &val);
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GST_DEBUG ("red: %d", val);
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glXGetFBConfigAttrib (display, config, GLX_GREEN_SIZE, &val);
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GST_DEBUG ("green: %d", val);
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glXGetFBConfigAttrib (display, config, GLX_BLUE_SIZE, &val);
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GST_DEBUG ("blue: %d", val);
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glXGetFBConfigAttrib (display, config, GLX_ALPHA_SIZE, &val);
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GST_DEBUG ("alpha: %d", val);
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glXGetFBConfigAttrib (display, config, GLX_DEPTH_SIZE, &val);
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GST_DEBUG ("depth: %d", val);
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glXGetFBConfigAttrib (display, config, GLX_STENCIL_SIZE, &val);
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GST_DEBUG ("stencil: %d", val);
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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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gboolean create_context;
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const char *glx_exts;
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int x_error;
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window_glx = GST_GL_WINDOW_X11_GLX (window_x11);
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glx_exts =
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glXQueryExtensionsString (window_x11->device,
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DefaultScreen (window_x11->device));
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create_context = gst_gl_check_extension ("GLX_ARB_create_context", glx_exts);
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window_glx->priv->glXCreateContextAttribsARB =
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(gpointer) glXGetProcAddressARB ((const GLubyte *)
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"glXCreateContextAttribsARB");
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if (create_context && window_glx->priv->glXCreateContextAttribsARB) {
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int context_attribs_3[] = {
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GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
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GLX_CONTEXT_MINOR_VERSION_ARB, 0,
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//GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
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None
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};
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int context_attribs_pre_3[] = {
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GLX_CONTEXT_MAJOR_VERSION_ARB, 1,
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GLX_CONTEXT_MINOR_VERSION_ARB, 4,
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None
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};
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gst_gl_window_x11_trap_x_errors ();
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window_glx->glx_context =
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window_glx->priv->glXCreateContextAttribsARB (window_x11->device,
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window_glx->priv->fbconfigs[0], (GLXContext) external_gl_context, True,
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context_attribs_3);
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x_error = gst_gl_window_x11_untrap_x_errors ();
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window_glx->priv->context_api = GST_GL_API_OPENGL3 | GST_GL_API_OPENGL;
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if (!window_glx->glx_context || x_error != 0) {
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GST_DEBUG ("Failed to create an Opengl 3 context. trying a legacy one");
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gst_gl_window_x11_trap_x_errors ();
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window_glx->glx_context =
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window_glx->priv->glXCreateContextAttribsARB (window_x11->device,
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window_glx->priv->fbconfigs[0], (GLXContext) external_gl_context,
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True, context_attribs_pre_3);
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x_error = gst_gl_window_x11_untrap_x_errors ();
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if (x_error != 0)
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window_glx->glx_context = NULL;
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window_glx->priv->context_api = GST_GL_API_OPENGL;
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}
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} else {
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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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window_glx->priv->context_api = GST_GL_API_OPENGL;
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}
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if (window_glx->priv->fbconfigs)
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XFree (window_glx->priv->fbconfigs);
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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");
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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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GstGLWindowX11GLX *window_glx;
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gint error_base;
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gint event_base;
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window_glx = GST_GL_WINDOW_X11_GLX (window_x11);
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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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if (!glXQueryVersion (window_x11->device, &window_glx->priv->glx_major,
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&window_glx->priv->glx_minor)) {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_CREATE_CONTEXT,
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"Failed to query GLX version (glXQueryVersion failed)");
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goto failure;
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}
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GST_INFO ("GLX Version: %d.%d", window_glx->priv->glx_major,
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window_glx->priv->glx_minor);
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/* legacy case */
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if (window_glx->priv->glx_major < 1 || (window_glx->priv->glx_major == 1
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&& window_glx->priv->glx_minor < 3)) {
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gint attribs[] = {
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GLX_RGBA,
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GLX_RED_SIZE, 1,
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GLX_GREEN_SIZE, 1,
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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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window_x11->visual_info = glXChooseVisual (window_x11->device,
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window_x11->screen_num, attribs);
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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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} else {
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gint attribs[] = {
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GLX_RENDER_TYPE, GLX_RGBA_BIT,
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GLX_RED_SIZE, 1,
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GLX_GREEN_SIZE, 1,
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GLX_BLUE_SIZE, 1,
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GLX_DEPTH_SIZE, 16,
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GLX_DOUBLEBUFFER, True,
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None
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};
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int fbcount;
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window_glx->priv->fbconfigs = glXChooseFBConfig (window_x11->device,
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DefaultScreen (window_x11->device), attribs, &fbcount);
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if (!window_glx->priv->fbconfigs) {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_CONFIG,
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"Could not find any FBConfig's to use (check attributes?)");
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goto failure;
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}
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_describe_fbconfig (window_x11->device, window_glx->priv->fbconfigs[0]);
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window_x11->visual_info = glXGetVisualFromFBConfig (window_x11->device,
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window_glx->priv->fbconfigs[0]);
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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 FBConfig");
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goto failure;
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}
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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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GstGLWindowX11GLX *window_glx;
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window_glx = GST_GL_WINDOW_X11_GLX (window);
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return window_glx->priv->context_api;
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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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