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gstreamer/subprojects/gst-plugins-base/gst-libs/gst/gl/x11/gstglcontext_glx.c

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/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.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.
*/
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* FIXME: Sharing contexts requires the Display to be the same.
* May need to box it
*/
#include <gst/gst.h>
#include "../gstgl_fwd.h"
#include <gst/gl/gstglcontext.h>
#include <gst/gl/gl.h>
#include "gstglcontext_glx.h"
#include "../utils/opengl_versions.h"
#include "../gstglcontext_private.h"
#define GST_CAT_DEFAULT gst_gl_context_debug
static guintptr gst_gl_context_glx_get_gl_context (GstGLContext * context);
static void gst_gl_context_glx_swap_buffers (GstGLContext * context);
static gboolean gst_gl_context_glx_activate (GstGLContext * context,
gboolean activate);
static gboolean gst_gl_context_glx_create_context (GstGLContext *
context, GstGLAPI gl_api, GstGLContext * other_context, GError ** error);
static void gst_gl_context_glx_destroy_context (GstGLContext * context);
static gboolean gst_gl_context_glx_choose_format (GstGLContext *
context, GError ** error);
static GstGLAPI gst_gl_context_glx_get_gl_api (GstGLContext * context);
static GstGLPlatform gst_gl_context_glx_get_gl_platform (GstGLContext *
context);
static void gst_gl_context_glx_get_gl_platform_version (GstGLContext * context,
gint * major, gint * minor);
static GstStructure *gst_gl_context_glx_get_config (GstGLContext * context);
static gboolean gst_gl_context_glx_request_config (GstGLContext * context,
GstStructure * config);
struct _GstGLContextGLXPrivate
{
int glx_major;
int glx_minor;
GstGLAPI context_api;
GLXFBConfig *fbconfigs;
GLXContext (*glXCreateContextAttribsARB) (Display *, GLXFBConfig,
GLXContext, Bool, const int *);
GstStructure *requested_config;
};
#define gst_gl_context_glx_parent_class parent_class
G_DEFINE_TYPE_WITH_PRIVATE (GstGLContextGLX, gst_gl_context_glx,
GST_TYPE_GL_CONTEXT);
static void
gst_gl_context_glx_class_init (GstGLContextGLXClass * klass)
{
GstGLContextClass *context_class = (GstGLContextClass *) klass;
context_class->get_gl_context =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_get_gl_context);
context_class->activate = GST_DEBUG_FUNCPTR (gst_gl_context_glx_activate);
context_class->create_context =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_create_context);
context_class->destroy_context =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_destroy_context);
context_class->choose_format =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_choose_format);
context_class->swap_buffers =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_swap_buffers);
context_class->get_gl_api = GST_DEBUG_FUNCPTR (gst_gl_context_glx_get_gl_api);
context_class->get_gl_platform =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_get_gl_platform);
context_class->get_proc_address =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_get_proc_address);
context_class->get_current_context =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_get_current_context);
context_class->get_gl_platform_version =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_get_gl_platform_version);
context_class->get_config = GST_DEBUG_FUNCPTR (gst_gl_context_glx_get_config);
context_class->request_config =
GST_DEBUG_FUNCPTR (gst_gl_context_glx_request_config);
}
static void
gst_gl_context_glx_init (GstGLContextGLX * context)
{
context->priv = gst_gl_context_glx_get_instance_private (context);
}
GstGLContextGLX *
gst_gl_context_glx_new (GstGLDisplay * display)
{
GstGLContextGLX *context;
if ((gst_gl_display_get_handle_type (display) & GST_GL_DISPLAY_TYPE_X11) == 0)
/* we require an x11 display handle to create GLX contexts */
return NULL;
context = g_object_new (GST_TYPE_GL_CONTEXT_GLX, NULL);
gst_object_ref_sink (context);
return context;
}
static GstGLConfigSurfaceType
glx_drawable_type_to_gst (int drawable_type)
{
GstGLConfigSurfaceType ret = GST_GL_CONFIG_SURFACE_TYPE_NONE;
if (drawable_type & GLX_WINDOW_BIT)
ret |= GST_GL_CONFIG_SURFACE_TYPE_WINDOW;
if (drawable_type & GLX_PIXMAP_BIT)
ret |= GST_GL_CONFIG_SURFACE_TYPE_PIXMAP;
if (drawable_type & GLX_PBUFFER_BIT)
ret |= GST_GL_CONFIG_SURFACE_TYPE_PBUFFER;
return ret;
}
static GstGLConfigCaveat
glx_caveat_to_gst (int caveat)
{
switch (caveat) {
case GLX_NONE:
return GST_GL_CONFIG_CAVEAT_NONE;
case GLX_SLOW_CONFIG:
return GST_GL_CONFIG_CAVEAT_SLOW;
case GLX_NON_CONFORMANT_CONFIG:
return GST_GL_CONFIG_CAVEAT_NON_CONFORMANT;
default:
GST_WARNING ("unknown GLX caveat value %u (0x%x)", caveat, caveat);
return GST_GL_CONFIG_CAVEAT_NON_CONFORMANT;
}
}
static GstStructure *
fb_config_to_structure (GstGLContext * context,
Display * dpy, GLXFBConfig fbconfig)
{
GstStructure *ret;
int val, render_type;
ret = gst_structure_new (GST_GL_CONFIG_STRUCTURE_NAME,
GST_GL_CONFIG_STRUCTURE_SET_ARGS (PLATFORM, GstGLPlatform,
GST_GL_PLATFORM_GLX), "platform-sub-type", G_TYPE_STRING, "fbconfig",
NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_FBCONFIG_ID, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (CONFIG_ID, int,
val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_VISUAL_ID, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (NATIVE_VISUAL_ID,
guint, val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_CONFIG_CAVEAT, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (CAVEAT,
GstGLConfigCaveat, glx_caveat_to_gst (val)), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_DRAWABLE_TYPE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (SURFACE_TYPE,
GstGLConfigSurfaceType, glx_drawable_type_to_gst (val)), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_X_RENDERABLE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (NATIVE_RENDERABLE,
gboolean, val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_LEVEL, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (LEVEL, int, val),
NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_RENDER_TYPE,
&render_type))
goto failure;
if (render_type & GLX_RGBA_BIT) {
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_RED_SIZE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (RED_SIZE, int,
val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_GREEN_SIZE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (GREEN_SIZE, int,
val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_BLUE_SIZE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (BLUE_SIZE, int,
val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_ALPHA_SIZE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (ALPHA_SIZE, int,
val), NULL);
}
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_DEPTH_SIZE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (DEPTH_SIZE, int,
val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_STENCIL_SIZE, &val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (STENCIL_SIZE, int,
val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_MAX_PBUFFER_WIDTH,
&val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MAX_PBUFFER_WIDTH,
int, val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_MAX_PBUFFER_HEIGHT,
&val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MAX_PBUFFER_HEIGHT,
int, val), NULL);
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_MAX_PBUFFER_PIXELS,
&val))
goto failure;
gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MAX_PBUFFER_PIXELS,
int, val), NULL);
return ret;
failure:
gst_structure_free (ret);
return NULL;
}
static void
gst_gl_context_glx_dump_fb_config (GstGLContextGLX * glx,
Display * dpy, GLXFBConfig fbconfig)
{
#define SIMPLE_STRING_ASSIGN(res_str,value,to_check,str) \
if (res_str == NULL && value == to_check) \
res_str = str
int fb_id, render_type;
{
int visual_id;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_FBCONFIG_ID,
&fb_id))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_VISUAL_ID,
&visual_id))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_RENDER_TYPE,
&render_type))
return;
GST_DEBUG_OBJECT (glx, "dumping GLXFBConfig %p with id 0x%x and "
"visual id 0x%x", fbconfig, fb_id, visual_id);
}
{
#define MAX_RENDER_TYPE 8
#define MAX_DRAWABLE_TYPE 8
int x_renderable, visual_type, drawable_type, caveat, i = 0;
const char *render_values[MAX_RENDER_TYPE] = { NULL, };
const char *drawable_values[MAX_DRAWABLE_TYPE] = { NULL, };
const char *caveat_str = NULL;
const char *visual_type_str = NULL;
char *render_type_str = NULL;
char *drawable_type_str = NULL;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_X_RENDERABLE,
&x_renderable))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_CONFIG_CAVEAT,
&caveat))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_X_VISUAL_TYPE,
&visual_type))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_DRAWABLE_TYPE,
&drawable_type))
return;
SIMPLE_STRING_ASSIGN (visual_type_str, visual_type, GLX_TRUE_COLOR,
"TrueColor");
SIMPLE_STRING_ASSIGN (visual_type_str, visual_type, GLX_DIRECT_COLOR,
"DirectColor");
SIMPLE_STRING_ASSIGN (visual_type_str, visual_type, GLX_PSEUDO_COLOR,
"PseudoColor");
SIMPLE_STRING_ASSIGN (visual_type_str, visual_type, GLX_STATIC_COLOR,
"StaticColor");
SIMPLE_STRING_ASSIGN (visual_type_str, visual_type, GLX_GRAY_SCALE,
"GrayScale");
SIMPLE_STRING_ASSIGN (visual_type_str, visual_type, GLX_STATIC_GRAY,
"StaticGray");
SIMPLE_STRING_ASSIGN (visual_type_str, visual_type, GLX_NONE, "None");
SIMPLE_STRING_ASSIGN (caveat_str, caveat, GLX_NONE, "None");
SIMPLE_STRING_ASSIGN (caveat_str, caveat, GLX_SLOW_CONFIG, "SlowConfig");
SIMPLE_STRING_ASSIGN (caveat_str, caveat, GLX_NON_CONFORMANT_CONFIG,
"NonConformantConfig");
i = 0;
if (render_type & GLX_RGBA_BIT)
render_values[i++] = "RGBA";
if (render_type & GLX_COLOR_INDEX_BIT)
render_values[i++] = "Color Index";
/* bad things have happened if this fails: we haven't allocated enough
* space to hold all the values */
g_assert (i < MAX_RENDER_TYPE);
i = 0;
if (drawable_type & GLX_WINDOW_BIT)
drawable_values[i++] = "Window";
if (drawable_type & GLX_PIXMAP_BIT)
drawable_values[i++] = "Pixmap";
if (drawable_type & GLX_PBUFFER_BIT)
drawable_values[i++] = "PBuffer";
/* bad things have happened if this fails: we haven't allocated enough
* space to hold all the values */
g_assert (i < MAX_DRAWABLE_TYPE);
render_type_str = g_strjoinv ("|", (char **) render_values);
drawable_type_str = g_strjoinv ("|", (char **) drawable_values);
GST_DEBUG_OBJECT (glx, "Is XRenderable?: %s, visual type: (0x%x) %s, "
"render type: (0x%x) %s, drawable type: (0x%x) %s, caveat: (0x%x) %s",
x_renderable ? "YES" : "NO", visual_type, visual_type_str, render_type,
render_type_str, drawable_type, drawable_type_str, caveat, caveat_str);
g_free (render_type_str);
g_free (drawable_type_str);
#undef MAX_RENDER_TYPE
#undef MAX_DRAWABLE_TYPE
}
{
int buffer_size, level, double_buffered, stereo, aux_buffers;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_BUFFER_SIZE,
&buffer_size))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_LEVEL, &level))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_DOUBLEBUFFER,
&double_buffered))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_STEREO, &stereo))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_AUX_BUFFERS,
&aux_buffers))
return;
GST_DEBUG_OBJECT (glx, "Level: %i, buffer size: %i, double buffered: %i, "
"stereo: %i, aux buffers: %i", level, buffer_size, double_buffered,
stereo, aux_buffers);
}
if (render_type & GLX_RGBA_BIT) {
int r, g, b, a;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_RED_SIZE, &r))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_GREEN_SIZE, &g))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_BLUE_SIZE, &b))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_ALPHA_SIZE, &a))
return;
GST_DEBUG_OBJECT (glx, "[R, G, B, A] = [%i, %i, %i, %i]", r, g, b, a);
}
{
int d, s;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_DEPTH_SIZE, &d))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_STENCIL_SIZE, &s))
return;
GST_DEBUG_OBJECT (glx, "[D, S] = [%i, %i]", d, s);
}
{
int r, g, b, a;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_ACCUM_RED_SIZE, &r))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_ACCUM_GREEN_SIZE,
&g))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_ACCUM_BLUE_SIZE,
&b))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_ACCUM_ALPHA_SIZE,
&a))
return;
GST_DEBUG_OBJECT (glx, "Accumulation [R, G, B, A] = [%i, %i, %i, %i]", r, g,
b, a);
}
{
int transparent_type;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_TRANSPARENT_TYPE,
&transparent_type))
return;
if (transparent_type == GLX_NONE) {
GST_DEBUG_OBJECT (glx, "Is opaque");
} else if (transparent_type == GLX_TRANSPARENT_INDEX) {
int transparent_index;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_TRANSPARENT_INDEX,
&transparent_index))
return;
GST_DEBUG_OBJECT (glx, "Is transparent for index value 0x%x",
transparent_index);
} else if (transparent_type == GLX_TRANSPARENT_RGB) {
int r, g, b, a;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig,
GLX_TRANSPARENT_RED_VALUE, &r))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig,
GLX_TRANSPARENT_GREEN_VALUE, &g))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig,
GLX_TRANSPARENT_BLUE_VALUE, &b))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig,
GLX_TRANSPARENT_ALPHA_VALUE, &a))
return;
GST_DEBUG_OBJECT (glx, "Is transparent for value [R, G, B, A] = "
"[0x%x, 0x%x, 0x%x, 0x%x]", r, g, b, a);
} else {
GST_DEBUG_OBJECT (glx, "Unknown transparent type 0x%x", transparent_type);
}
}
{
int w, h, pixels;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_MAX_PBUFFER_WIDTH,
&w))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_MAX_PBUFFER_HEIGHT,
&h))
return;
if (Success != glXGetFBConfigAttrib (dpy, fbconfig, GLX_MAX_PBUFFER_PIXELS,
&pixels))
return;
GST_DEBUG_OBJECT (glx,
"PBuffer maximum dimensions are [%i, %i]. Max pixels are %i", w,
h, pixels);
}
#undef SIMPLE_STRING_ASSIGN
}
static void
gst_gl_context_glx_dump_all_fb_configs (GstGLContextGLX * glx,
Display * dpy, int screen)
{
int i, n;
GLXFBConfig *configs;
configs = glXGetFBConfigs (dpy, screen, &n);
for (i = 0; i < n; i++) {
gst_gl_context_glx_dump_fb_config (glx, dpy, configs[i]);
}
XFree (configs);
}
static int *
fb_config_attributes_from_structure (GstStructure * config)
{
guint i = 0, n;
int *ret;
if (!config) {
gint attribs[] = {
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 16,
GLX_DOUBLEBUFFER, True,
None
};
return g_memdup2 (attribs, sizeof (attribs));
}
n = gst_structure_n_fields (config) * 2 + 1;
ret = g_new0 (gint, n);
#define TRANSFORM_VALUE(GL_CONF_NAME,GLX_ATTR_NAME) \
G_STMT_START { \
if (gst_structure_has_field_typed (config, \
GST_GL_CONFIG_ATTRIB_NAME(GL_CONF_NAME), \
GST_GL_CONFIG_ATTRIB_GTYPE(GL_CONF_NAME))) { \
int val; \
if (gst_structure_get (config, \
GST_GL_CONFIG_ATTRIB_NAME(GL_CONF_NAME), \
GST_GL_CONFIG_ATTRIB_GTYPE(GL_CONF_NAME), &val, NULL)) { \
ret[i++] = GLX_ATTR_NAME; \
ret[i++] = (int) val; \
} \
} \
} G_STMT_END
TRANSFORM_VALUE (CONFIG_ID, GLX_FBCONFIG_ID);
TRANSFORM_VALUE (RED_SIZE, GLX_RED_SIZE);
TRANSFORM_VALUE (GREEN_SIZE, GLX_GREEN_SIZE);
TRANSFORM_VALUE (BLUE_SIZE, GLX_BLUE_SIZE);
TRANSFORM_VALUE (ALPHA_SIZE, GLX_ALPHA_SIZE);
TRANSFORM_VALUE (DEPTH_SIZE, GLX_DEPTH_SIZE);
TRANSFORM_VALUE (STENCIL_SIZE, GLX_STENCIL_SIZE);
/* TODO: more values */
#undef TRANSFORM_VALUE
ret[i++] = None;
g_assert (i <= n);
return ret;
}
static GLXContext
_create_context_with_flags (GstGLContextGLX * context_glx, Display * dpy,
GLXFBConfig fbconfig, GLXContext share_context, gint major, gint minor,
gint contextFlags, gint profileMask)
{
GLXContext ret;
#define N_ATTRIBS 20
gint attribs[N_ATTRIBS];
int x_error = 0;
gint n = 0;
if (major) {
attribs[n++] = GLX_CONTEXT_MAJOR_VERSION_ARB;
attribs[n++] = major;
}
if (minor) {
attribs[n++] = GLX_CONTEXT_MINOR_VERSION_ARB;
attribs[n++] = minor;
}
if (contextFlags) {
attribs[n++] = GLX_CONTEXT_FLAGS_ARB;
attribs[n++] = contextFlags;
}
#ifdef GLX_ARB_create_context_profile
if (profileMask) {
attribs[n++] = GLX_CONTEXT_PROFILE_MASK_ARB;
attribs[n++] = profileMask;
}
#endif
attribs[n++] = None;
g_assert (n < N_ATTRIBS);
#undef N_ATTRIBS
gst_gl_window_x11_trap_x_errors ();
ret = context_glx->priv->glXCreateContextAttribsARB (dpy, fbconfig,
share_context, True, attribs);
x_error = gst_gl_window_x11_untrap_x_errors ();
if (x_error)
ret = 0;
return ret;
}
static gboolean
gst_gl_context_glx_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
{
GstGLContextGLX *context_glx;
GstGLWindow *window;
GstGLWindowX11 *window_x11;
GstGLDisplay *display = NULL;
gboolean create_context;
const char *glx_exts;
Display *device;
guintptr external_gl_context = 0;
context_glx = GST_GL_CONTEXT_GLX (context);
window = gst_gl_context_get_window (context);
if (!GST_IS_GL_WINDOW_X11 (window)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Cannot create an GLX context from a non-X11 window");
goto failure;
}
window_x11 = GST_GL_WINDOW_X11 (window);
display = gst_gl_context_get_display (context);
if (other_context) {
if (gst_gl_context_get_gl_platform (other_context) != GST_GL_PLATFORM_GLX) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Cannot share context with non-GLX context");
goto failure;
}
external_gl_context = gst_gl_context_get_gl_context (other_context);
}
device = (Display *) gst_gl_display_get_handle (display);
if (!device) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE, "Invalid Display handle");
goto failure;
}
glx_exts = glXQueryExtensionsString (device, DefaultScreen (device));
create_context = gst_gl_check_extension ("GLX_ARB_create_context", glx_exts);
context_glx->priv->glXCreateContextAttribsARB =
(gpointer) glXGetProcAddressARB ((const GLubyte *)
"glXCreateContextAttribsARB");
if (!context_glx->glx_context && gl_api & GST_GL_API_OPENGL3 && create_context
&& context_glx->priv->glXCreateContextAttribsARB) {
gint i;
for (i = 0; i < G_N_ELEMENTS (opengl_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if ((opengl_versions[i].major > 3
|| (opengl_versions[i].major == 3
&& opengl_versions[i].minor >= 2))) {
profileMask |= GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
contextFlags |= GLX_CONTEXT_DEBUG_BIT_ARB;
} else {
break;
}
GST_DEBUG_OBJECT (context, "trying to create a GL %d.%d context",
opengl_versions[i].major, opengl_versions[i].minor);
context_glx->glx_context = _create_context_with_flags (context_glx,
device, context_glx->priv->fbconfigs[0],
(GLXContext) external_gl_context, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (context_glx->glx_context) {
context_glx->priv->context_api = GST_GL_API_OPENGL3;
break;
}
}
}
if (!context_glx->glx_context && gl_api & GST_GL_API_OPENGL) {
context_glx->glx_context =
glXCreateContext (device, window_x11->visual_info,
(GLXContext) external_gl_context, TRUE);
context_glx->priv->context_api = GST_GL_API_OPENGL;
}
if (!context_glx->glx_context) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT, "Failed to create opengl context");
goto failure;
}
GST_LOG ("gl context id: %ld", (gulong) context_glx->glx_context);
gst_object_unref (window);
gst_object_unref (display);
return TRUE;
failure:
if (window)
gst_object_unref (window);
if (display)
gst_object_unref (display);
return FALSE;
}
static void
gst_gl_context_glx_destroy_context (GstGLContext * context)
{
GstGLWindow *window;
GstGLContextGLX *context_glx;
Display *device;
context_glx = GST_GL_CONTEXT_GLX (context);
window = gst_gl_context_get_window (context);
device = (Display *) gst_gl_display_get_handle (window->display);
if (context_glx->priv->fbconfigs)
XFree (context_glx->priv->fbconfigs);
context_glx->priv->fbconfigs = NULL;
glXDestroyContext (device, context_glx->glx_context);
context_glx->glx_context = 0;
if (context_glx->priv->requested_config)
gst_structure_free (context_glx->priv->requested_config);
context_glx->priv->requested_config = NULL;
gst_object_unref (window);
}
static gboolean
gst_gl_context_glx_choose_format (GstGLContext * context, GError ** error)
{
GstGLContextGLX *context_glx;
GstGLWindow *window;
GstGLWindowX11 *window_x11;
gint error_base;
gint event_base;
Display *device;
context_glx = GST_GL_CONTEXT_GLX (context);
window = gst_gl_context_get_window (context);
if (!GST_IS_GL_WINDOW_X11 (window)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Cannot create an GLX context from a non-X11 window");
goto failure;
}
window_x11 = GST_GL_WINDOW_X11 (window);
device = (Display *) gst_gl_display_get_handle (window->display);
if (!device) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE, "Invalid Display handle");
goto failure;
}
if (!glXQueryExtension (device, &error_base, &event_base)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE, "No GLX extension");
goto failure;
}
if (!glXQueryVersion (device, &context_glx->priv->glx_major,
&context_glx->priv->glx_minor)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"Failed to query GLX version (glXQueryVersion failed)");
goto failure;
}
GST_INFO ("GLX Version: %d.%d", context_glx->priv->glx_major,
context_glx->priv->glx_minor);
/* legacy case */
if (context_glx->priv->glx_major < 1 || (context_glx->priv->glx_major == 1
&& context_glx->priv->glx_minor < 3)) {
gint attribs[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 16,
GLX_DOUBLEBUFFER,
None
};
window_x11->visual_info = glXChooseVisual (device,
window_x11->screen_num, attribs);
if (!window_x11->visual_info) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Bad attributes in glXChooseVisual");
goto failure;
}
} else {
int fbcount;
int *attribs;
attribs =
fb_config_attributes_from_structure (context_glx->
priv->requested_config);
gst_gl_context_glx_dump_all_fb_configs (context_glx, device,
DefaultScreen (device));
context_glx->priv->fbconfigs = glXChooseFBConfig (device,
DefaultScreen (device), attribs, &fbcount);
g_free (attribs);
if (!context_glx->priv->fbconfigs) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Could not find any FBConfig's to use (check attributes?)");
goto failure;
}
GST_DEBUG_OBJECT (context_glx, "Chosen GLXFBConfig:");
gst_gl_context_glx_dump_fb_config (context_glx, device,
context_glx->priv->fbconfigs[0]);
window_x11->visual_info = glXGetVisualFromFBConfig (device,
context_glx->priv->fbconfigs[0]);
if (!window_x11->visual_info) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG, "Bad attributes in FBConfig");
goto failure;
}
}
gst_gl_window_x11_create_window ((GstGLWindowX11 *) window);
gst_object_unref (window);
return TRUE;
failure:
if (window)
gst_object_unref (window);
return FALSE;
}
static void
gst_gl_context_glx_swap_buffers (GstGLContext * context)
{
GstGLWindow *window = gst_gl_context_get_window (context);
Display *device = (Display *) gst_gl_display_get_handle (window->display);
Window window_handle = (Window) gst_gl_window_get_window_handle (window);
glXSwapBuffers (device, window_handle);
gst_object_unref (window);
}
static guintptr
gst_gl_context_glx_get_gl_context (GstGLContext * context)
{
return (guintptr) GST_GL_CONTEXT_GLX (context)->glx_context;
}
static gboolean
gst_gl_context_glx_activate (GstGLContext * context, gboolean activate)
{
GstGLWindow *window = gst_gl_context_get_window (context);
Display *device = (Display *) gst_gl_display_get_handle (window->display);
Window window_handle = (Window) gst_gl_window_get_window_handle (window);
gboolean result;
if (activate) {
result = glXMakeCurrent (device, window_handle,
GST_GL_CONTEXT_GLX (context)->glx_context);
} else {
result = glXMakeCurrent (device, None, NULL);
}
gst_object_unref (window);
return result;
}
GstGLAPI
gst_gl_context_glx_get_gl_api (GstGLContext * context)
{
GstGLContextGLX *context_glx;
context_glx = GST_GL_CONTEXT_GLX (context);
return context_glx->priv->context_api;
}
static GstGLPlatform
gst_gl_context_glx_get_gl_platform (GstGLContext * context)
{
return GST_GL_PLATFORM_GLX;
}
gpointer
gst_gl_context_glx_get_proc_address (GstGLAPI gl_api, const gchar * name)
{
gpointer result;
if (!(result = gst_gl_context_default_get_proc_address (gl_api, name))) {
result = glXGetProcAddressARB ((const GLubyte *) name);
}
return result;
}
guintptr
gst_gl_context_glx_get_current_context (void)
{
return (guintptr) glXGetCurrentContext ();
}
static void
gst_gl_context_glx_get_gl_platform_version (GstGLContext * context,
gint * major, gint * minor)
{
GstGLContextGLX *context_glx = GST_GL_CONTEXT_GLX (context);
*major = context_glx->priv->glx_major;
*minor = context_glx->priv->glx_minor;
}
static GstStructure *
gst_gl_context_glx_get_config (GstGLContext * context)
{
GstGLContextGLX *glx = GST_GL_CONTEXT_GLX (context);
GstGLWindow *window;
GstGLWindowX11 *window_x11;
Display *device;
GstStructure *ret;
window = gst_gl_context_get_window (context);
device = (Display *) gst_gl_display_get_handle (window->display);
window_x11 = GST_GL_WINDOW_X11 (window);
g_return_val_if_fail (glx->priv->fbconfigs || window_x11->visual_info, NULL);
if (glx->priv->fbconfigs) {
ret = fb_config_to_structure (context, device, glx->priv->fbconfigs[0]);
} else {
/*TODO: XVisualInfo for really old GLX/X11 versions, */
ret = NULL;
}
gst_object_unref (window);
return ret;
}
static gboolean
gst_gl_context_glx_request_config (GstGLContext * context,
GstStructure * config)
{
GstGLContextGLX *glx = GST_GL_CONTEXT_GLX (context);
if (glx->priv->requested_config)
gst_structure_free (glx->priv->requested_config);
glx->priv->requested_config = config;
return TRUE;
}
gboolean
gst_gl_context_glx_fill_info (GstGLContext * context, GError ** error)
{
GLXContext glx_context = (GLXContext) gst_gl_context_get_gl_context (context);
GstStructure *config;
Display *device;
GLXFBConfig *fbconfigs;
int fbconfig_id, n_fbconfigs;
int glx_major, glx_minor;
int attrs[3];
if (!glx_context) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE, "No GLX context");
return FALSE;
}
device = (Display *) gst_gl_display_get_handle (context->display);
if (!glXQueryVersion (device, &glx_major, &glx_minor)) {
GST_WARNING_OBJECT (context, "could not retrieve GLX version");
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"could not retrieve GLX version");
return FALSE;
}
if (!GST_GL_CHECK_GL_VERSION (glx_major, glx_minor, 1, 4)) {
GST_FIXME_OBJECT (context, "No support for retrieving the "
"GstGLContextConfig from GLX < 1.4, have %u.%u", glx_major, glx_minor);
return TRUE;
}
if (Success != glXQueryContext (device, glx_context, GLX_FBCONFIG_ID,
&fbconfig_id)) {
GST_WARNING_OBJECT (context,
"could not retrieve fbconfig id from glx context");
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"could not retrieve fbconfig id from glx context");
goto failure;
}
attrs[0] = GLX_FBCONFIG_ID;
attrs[1] = fbconfig_id;
attrs[2] = None;
fbconfigs = glXChooseFBConfig (device, DefaultScreen (device), attrs,
&n_fbconfigs);
if (!fbconfigs || n_fbconfigs <= 0) {
GST_WARNING_OBJECT (context,
"could not retrieve fbconfig from its ID 0x%x. "
"Wrong Display or Screen?", fbconfig_id);
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"could not retrieve fbconfig from its ID 0x%x. "
"Wrong Display or Screen?", fbconfig_id);
goto failure;
}
config = fb_config_to_structure (context, device, fbconfigs[0]);
if (!config) {
GST_WARNING_OBJECT (context, "could not transform fbconfig id 0x%x into "
"GstStructure.", fbconfig_id);
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"could not transform fbconfig id 0x%x into GstStructure.", fbconfig_id);
goto failure;
}
GST_INFO_OBJECT (context, "found config %" GST_PTR_FORMAT, config);
g_object_set_data_full (G_OBJECT (context),
GST_GL_CONTEXT_WRAPPED_GL_CONFIG_NAME, config,
(GDestroyNotify) gst_structure_free);
XFree (fbconfigs);
return TRUE;
failure:
return FALSE;
}
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