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gstreamer/gst-libs/gst/gl/egl/gstglcontext_egl.c
Thibault Saunier 909baa2360 Pass the code through codespell
2019-08-30 13:05:36 +00:00

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/*
* GStreamer
* Copyright (C) 2013 Sebastian Dröge <slomo@circular-chaos.org>
*
* 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 <gmodule.h>
/* FIXME: Sharing contexts requires the EGLDisplay to be the same
* may need to box it.
*/
#include "gstglcontext_egl.h"
#include <gst/gl/gstglcontext_private.h>
#include <gst/gl/gstglfeature.h>
#include <gst/gl/gstglwindow.h>
#include "gstegl.h"
#include "../utils/opengl_versions.h"
#include "../utils/gles_versions.h"
#if GST_GL_HAVE_WINDOW_X11
#include "../x11/gstglwindow_x11.h"
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
#include "../wayland/gstglwindow_wayland_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_WIN32
#include "../win32/gstglwindow_win32.h"
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
#include "../dispmanx/gstglwindow_dispmanx_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_GBM
#include "../gbm/gstglwindow_gbm_egl.h"
#endif
#define GST_CAT_DEFAULT gst_gl_context_debug
static gboolean gst_gl_context_egl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error);
static void gst_gl_context_egl_destroy_context (GstGLContext * context);
static gboolean gst_gl_context_egl_choose_format (GstGLContext * context,
GError ** error);
static gboolean gst_gl_context_egl_activate (GstGLContext * context,
gboolean activate);
static void gst_gl_context_egl_swap_buffers (GstGLContext * context);
static guintptr gst_gl_context_egl_get_gl_context (GstGLContext * context);
static GstGLAPI gst_gl_context_egl_get_gl_api (GstGLContext * context);
static GstGLPlatform gst_gl_context_egl_get_gl_platform (GstGLContext *
context);
static gboolean gst_gl_context_egl_check_feature (GstGLContext * context,
const gchar * feature);
static void gst_gl_context_egl_get_gl_platform_version (GstGLContext * context,
gint * major, gint * minor);
G_DEFINE_TYPE (GstGLContextEGL, gst_gl_context_egl, GST_TYPE_GL_CONTEXT);
static void
gst_gl_context_egl_class_init (GstGLContextEGLClass * klass)
{
GstGLContextClass *context_class = (GstGLContextClass *) klass;
context_class->get_gl_context =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_context);
context_class->activate = GST_DEBUG_FUNCPTR (gst_gl_context_egl_activate);
context_class->create_context =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_create_context);
context_class->destroy_context =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_destroy_context);
context_class->choose_format =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_choose_format);
context_class->swap_buffers =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_swap_buffers);
context_class->get_gl_api = GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_api);
context_class->get_gl_platform =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_platform);
context_class->get_proc_address =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_proc_address);
context_class->check_feature =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_check_feature);
context_class->get_current_context =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_current_context);
context_class->get_gl_platform_version =
GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_platform_version);
}
static void
gst_gl_context_egl_init (GstGLContextEGL * context)
{
}
/* Must be called in the gl thread */
GstGLContextEGL *
gst_gl_context_egl_new (GstGLDisplay * display)
{
GstGLContextEGL *context;
/* XXX: display type could theoretically be anything, as long as
* eglGetDisplay supports it. */
context = g_object_new (GST_TYPE_GL_CONTEXT_EGL, NULL);
gst_object_ref_sink (context);
return context;
}
static gboolean
gst_gl_context_egl_choose_format (GstGLContext * context, GError ** error)
{
#if GST_GL_HAVE_WINDOW_X11
if (GST_IS_GL_WINDOW_X11 (context->window)) {
GstGLWindow *window = gst_gl_context_get_window (context);
GstGLWindowX11 *window_x11 = GST_GL_WINDOW_X11 (window);
gint ret;
window_x11->visual_info = g_new0 (XVisualInfo, 1);
ret = XMatchVisualInfo (window_x11->device, window_x11->screen_num,
window_x11->depth, TrueColor, window_x11->visual_info);
gst_object_unref (window);
if (ret == 0) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG, "Failed to match XVisualInfo");
return FALSE;
}
}
#endif
return TRUE;
}
static void
gst_gl_context_egl_dump_config (GstGLContextEGL * egl, EGLConfig config)
{
int id;
int buffer_type;
if (!egl->egl_display)
return;
{
int native_visual_id, native_visual_type;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_CONFIG_ID, &id))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_NATIVE_VISUAL_ID,
&native_visual_id))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_NATIVE_VISUAL_TYPE,
&native_visual_type))
return;
GST_DEBUG_OBJECT (egl, "dumping EGLConfig %p with id 0x%x and "
"native visual id 0x%x of type 0x%x", config, id, native_visual_id,
native_visual_type);
}
{
#define MAX_CONFORMANT 8
int conformant, i = 0;
const char *conformant_values[MAX_CONFORMANT] = { NULL, };
char *conformant_str = NULL;;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_CONFORMANT,
&conformant))
return;
if (conformant & EGL_OPENGL_BIT)
conformant_values[i++] = "OpenGL";
if (conformant & EGL_OPENGL_ES_BIT)
conformant_values[i++] = "OpenGL ES";
if (conformant & EGL_OPENGL_ES2_BIT)
conformant_values[i++] = "OpenGL ES 2.x";
#if defined(EGL_KHR_create_context)
if (conformant & EGL_OPENGL_ES3_BIT_KHR)
conformant_values[i++] = "OpenGL ES 3.x";
#endif
if (conformant & EGL_OPENVG_BIT)
conformant_values[i++] = "OpenVG";
/* bad things have happened if this fails: we haven't allocated enough
* space to hold all the values */
g_assert (i < MAX_CONFORMANT);
conformant_str = g_strjoinv ("|", (char **) conformant_values);
GST_DEBUG_OBJECT (egl, "Conformant for %s", conformant_str);
g_free (conformant_str);
#undef MAX_CONFORMANT
}
{
#define MAX_RENDERABLE 8
int renderable, i = 0;
const char *renderable_values[MAX_RENDERABLE] = { NULL, };
char *renderable_str = NULL;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_RENDERABLE_TYPE,
&renderable))
return;
if (renderable & EGL_OPENGL_BIT)
renderable_values[i++] = "OpenGL";
if (renderable & EGL_OPENGL_ES_BIT)
renderable_values[i++] = "OpenGL ES";
if (renderable & EGL_OPENGL_ES2_BIT)
renderable_values[i++] = "OpenGL ES 2.x";
#if defined(EGL_KHR_create_context)
if (renderable & EGL_OPENGL_ES3_BIT_KHR)
renderable_values[i++] = "OpenGL ES 3.x";
#endif
if (renderable & EGL_OPENVG_BIT)
renderable_values[i++] = "OpenVG";
/* bad things have happened if this fails: we haven't allocated enough
* space to hold all the values */
g_assert (i < MAX_RENDERABLE);
renderable_str = g_strjoinv ("|", (char **) renderable_values);
GST_DEBUG_OBJECT (egl, "Renderable for %s", renderable_str);
g_free (renderable_str);
#undef MAX_RENDERABLE
}
{
#define MAX_SURFACE 8
int surface, i = 0;
const char *surface_values[MAX_SURFACE] = { NULL, };
char *surface_str = NULL;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_SURFACE_TYPE,
&surface))
return;
if (surface & EGL_WINDOW_BIT)
surface_values[i++] = "window";
if (surface & EGL_PBUFFER_BIT)
surface_values[i++] = "pbuffer";
if (surface & EGL_MULTISAMPLE_RESOLVE_BOX_BIT)
surface_values[i++] = "multisample-resolve-box";
if (surface & EGL_SWAP_BEHAVIOR_PRESERVED_BIT)
surface_values[i++] = "swap-behaviour-preserved";
if (surface & EGL_VG_ALPHA_FORMAT_PRE_BIT)
surface_values[i++] = "vg-alpha-format-pre";
if (surface & EGL_VG_COLORSPACE_LINEAR_BIT)
surface_values[i++] = "vg-colorspace-linear";
/* bad things have happened if this fails: we haven't allocated enough
* space to hold all the values */
g_assert (i < MAX_SURFACE);
surface_str = g_strjoinv ("|", (char **) surface_values);
GST_DEBUG_OBJECT (egl, "Surface for (0x%x) %s", surface, surface_str);
g_free (surface_str);
#undef MAX_RENDERABLE
}
{
#define MAX_CAVEAT 8
int caveat, i = 0;
const char *caveat_values[MAX_CAVEAT] = { NULL, };
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_CONFIG_CAVEAT,
&caveat))
return;
if (caveat == EGL_SLOW_CONFIG) {
caveat_values[i++] = "slow";
} else if (caveat == EGL_NON_CONFORMANT_CONFIG) {
caveat_values[i++] = "non-conformant";
}
if (i > 0) {
char *caveat_str = g_strjoinv ("|", (char **) caveat_values);
GST_DEBUG_OBJECT (egl, "Advertised as %s", caveat_str);
g_free (caveat_str);
}
#undef MAX_CAVEAT
}
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_COLOR_BUFFER_TYPE,
&buffer_type))
return;
if (buffer_type == EGL_RGB_BUFFER) {
int red, blue, green, alpha;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_RED_SIZE, &red))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_GREEN_SIZE, &green))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_BLUE_SIZE, &blue))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_ALPHA_SIZE, &alpha))
return;
GST_DEBUG_OBJECT (egl, "[R, G, B, A] = [%i, %i, %i, %i]", red, green, blue,
alpha);
} else if (buffer_type == EGL_LUMINANCE_BUFFER) {
int luminance, alpha;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_LUMINANCE_SIZE,
&luminance))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_ALPHA_SIZE, &alpha))
return;
GST_DEBUG_OBJECT (egl, "[L, A] = [%i, %i]", luminance, alpha);
} else {
GST_WARNING_OBJECT (egl, "unknown EGL_COLOR_BUFFER_TYPE value %x",
buffer_type);
return;
}
{
int depth, stencil;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_DEPTH_SIZE, &depth))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_STENCIL_SIZE,
&stencil))
return;
GST_DEBUG_OBJECT (egl, "[D, S] = [%i, %i]", depth, stencil);
}
{
int min, max;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MIN_SWAP_INTERVAL,
&min))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_SWAP_INTERVAL,
&max))
return;
GST_DEBUG_OBJECT (egl, "Swap interval range is [%i, %i]", min, max);
}
{
int width, height, pixels;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_PBUFFER_WIDTH,
&width))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_PBUFFER_HEIGHT,
&height))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_PBUFFER_PIXELS,
&pixels))
return;
GST_DEBUG_OBJECT (egl,
"PBuffer maximum dimensions are [%i, %i]. Max pixels are %i", width,
height, pixels);
}
{
int sample_buffers, samples_per_pixel;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_SAMPLE_BUFFERS,
&sample_buffers))
return;
if (!eglGetConfigAttrib (egl->egl_display, config, EGL_SAMPLES,
&samples_per_pixel))
return;
GST_DEBUG_OBJECT (egl, "Multisample buffers: %i and Samples per pixel: %i",
sample_buffers, samples_per_pixel);
}
}
static void
gst_gl_context_egl_dump_all_configs (GstGLContextEGL * egl)
{
int i, n;
EGLConfig *configs;
if (!eglGetConfigs (egl->egl_display, NULL, 0, &n)) {
GST_WARNING_OBJECT (egl, "Failed to get number of EGLConfig's");
return;
}
configs = g_new0 (EGLConfig, n);
if (!eglGetConfigs (egl->egl_display, configs, n, &n)) {
GST_WARNING_OBJECT (egl, "Failed to get the list of EGLConfig's");
goto out;
}
for (i = 0; i < n; i++)
gst_gl_context_egl_dump_config (egl, configs[i]);
out:
g_free (configs);
}
static gboolean
gst_gl_context_egl_choose_config (GstGLContextEGL * egl, GstGLAPI gl_api,
gint major, GError ** error)
{
gboolean create_context;
EGLint numConfigs;
gint i;
EGLint config_attrib[20];
EGLint egl_api = 0;
EGLBoolean ret = EGL_FALSE;
EGLint surface_type = EGL_WINDOW_BIT;
GstGLWindow *window;
window = gst_gl_context_get_window (GST_GL_CONTEXT (egl));
if (!window || !gst_gl_window_has_output_surface (window)) {
GST_INFO_OBJECT (egl,
"gl window has no output surface, use pixel buffer surfaces");
surface_type = EGL_PBUFFER_BIT;
}
create_context =
gst_gl_check_extension ("EGL_KHR_create_context", egl->egl_exts);
/* silence unused warnings */
(void) create_context;
if (gl_api & GST_GL_API_GLES2) {
if (major == 3) {
#if defined(EGL_KHR_create_context)
if (create_context) {
egl_api = EGL_OPENGL_ES3_BIT_KHR;
} else
#endif
{
return FALSE;
}
} else {
egl_api = EGL_OPENGL_ES2_BIT;
}
} else
egl_api = EGL_OPENGL_BIT;
try_again:
i = 0;
config_attrib[i++] = EGL_SURFACE_TYPE;
config_attrib[i++] = surface_type;
config_attrib[i++] = EGL_RENDERABLE_TYPE;
config_attrib[i++] = egl_api;
#if defined(USE_EGL_RPI) && GST_GL_HAVE_WINDOW_WAYLAND
/* The configurations with a=0 seems to be buggy whereas
* it works when using dispmanx directly */
config_attrib[i++] = EGL_ALPHA_SIZE;
config_attrib[i++] = 1;
#endif
config_attrib[i++] = EGL_DEPTH_SIZE;
config_attrib[i++] = 16;
config_attrib[i++] = EGL_RED_SIZE;
config_attrib[i++] = 1;
config_attrib[i++] = EGL_GREEN_SIZE;
config_attrib[i++] = 1;
config_attrib[i++] = EGL_BLUE_SIZE;
config_attrib[i++] = 1;
config_attrib[i++] = EGL_NONE;
ret = eglChooseConfig (egl->egl_display, config_attrib,
&egl->egl_config, 1, &numConfigs);
if (ret && numConfigs == 0) {
if (surface_type == EGL_PBUFFER_BIT) {
surface_type = EGL_WINDOW_BIT;
GST_TRACE_OBJECT (egl, "Retrying config with window bit");
goto try_again;
}
}
if (ret && numConfigs == 1) {
GST_INFO ("config set: %" G_GUINTPTR_FORMAT ", %u",
(guintptr) egl->egl_config, (unsigned int) numConfigs);
} else {
if (!ret) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG, "Failed to choose EGLConfig: %s",
gst_egl_get_error_string (eglGetError ()));
} else if (numConfigs <= 1) {
g_set_error_literal (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Could not find a compatible EGLConfig:");
} else {
g_warn_if_reached ();
}
goto failure;
}
GST_DEBUG_OBJECT (egl, "chosen EGLConfig:");
gst_gl_context_egl_dump_config (egl, egl->egl_config);
return TRUE;
failure:
return FALSE;
}
static EGLContext
_create_context_with_flags (GstGLContextEGL * egl, EGLContext share_context,
GstGLAPI gl_api, gint major, gint minor, gint contextFlags,
gint profileMask)
{
gboolean create_context;
#define N_ATTRIBS 20
gint attribs[N_ATTRIBS];
gint n = 0;
/* fail creation of apis/versions/flags that require EGL_KHR_create_context
* if the extension doesn't exist, namely:0
*
* - profile mask
* - context flags
* - GL3 > 3.1
* - GLES2 && minor > 0
*/
create_context =
gst_gl_check_extension ("EGL_KHR_create_context", egl->egl_exts);
(void) create_context;
if (!create_context && (profileMask || contextFlags
|| ((gl_api & GST_GL_API_OPENGL3)
&& GST_GL_CHECK_GL_VERSION (major, minor, 3, 2))
|| ((gl_api & GST_GL_API_GLES2) && minor > 0))) {
return 0;
}
GST_DEBUG_OBJECT (egl, "attempting to create OpenGL%s context version %d.%d "
"flags %x profile %x", gl_api & GST_GL_API_GLES2 ? " ES" : "", major,
minor, contextFlags, profileMask);
#if defined(EGL_KHR_create_context)
if (create_context) {
if (major) {
attribs[n++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
attribs[n++] = major;
}
if (minor) {
attribs[n++] = EGL_CONTEXT_MINOR_VERSION_KHR;
attribs[n++] = minor;
}
if (contextFlags) {
attribs[n++] = EGL_CONTEXT_FLAGS_KHR;
attribs[n++] = contextFlags;
}
if (profileMask) {
attribs[n++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
attribs[n++] = profileMask;
}
} else
#endif
{
attribs[n++] = EGL_CONTEXT_CLIENT_VERSION;
attribs[n++] = major;
}
attribs[n++] = EGL_NONE;
g_assert (n < N_ATTRIBS);
#undef N_ATTRIBS
return eglCreateContext (egl->egl_display, egl->egl_config, share_context,
attribs);
}
static gboolean
gst_gl_context_egl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
{
GstGLContextEGL *egl;
GstGLWindow *window = NULL;
guintptr window_handle = 0;
EGLint egl_major;
EGLint egl_minor;
gboolean need_surface = TRUE;
guintptr external_gl_context = 0;
guintptr egl_display;
egl = GST_GL_CONTEXT_EGL (context);
window = gst_gl_context_get_window (context);
GST_DEBUG_OBJECT (context, "Creating EGL context");
if (other_context) {
if (gst_gl_context_get_gl_platform (other_context) != GST_GL_PLATFORM_EGL) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Cannot share context with non-EGL context");
goto failure;
}
external_gl_context = gst_gl_context_get_gl_context (other_context);
}
if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2)) ==
GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"EGL supports opengl or gles2");
goto failure;
}
if (!egl->display_egl) {
GstGLDisplay *display = gst_gl_context_get_display (context);
egl->display_egl = gst_gl_display_egl_from_gl_display (display);
if (!egl->display_egl) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"Failed to create EGLDisplay from native display");
gst_object_unref (display);
goto failure;
}
gst_object_unref (display);
}
egl_display = gst_gl_display_get_handle (GST_GL_DISPLAY (egl->display_egl));
egl->egl_display = (EGLDisplay) egl_display;
if (eglInitialize (egl->egl_display, &egl_major, &egl_minor)) {
GST_INFO ("egl initialized, version: %d.%d", egl_major, egl_minor);
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"Failed to initialize egl: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
egl->egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
GST_DEBUG_OBJECT (egl, "Have EGL extensions: %s", egl->egl_exts);
gst_gl_context_egl_dump_all_configs (egl);
if (gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3)) {
GstGLAPI chosen_gl_api = 0;
gint i;
/* egl + opengl only available with EGL 1.4+ */
if (egl_major == 1 && egl_minor <= 3) {
if ((gl_api & ~GST_GL_API_OPENGL) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_OLD_LIBS,
"EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
egl_major, egl_minor);
goto failure;
} else {
GST_WARNING
("EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
egl_major, egl_minor);
if (gl_api & GST_GL_API_GLES2) {
goto try_gles2;
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Failed to choose a suitable OpenGL API");
goto failure;
}
}
}
if (!eglBindAPI (EGL_OPENGL_API)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to bind OpenGL API: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
GST_INFO ("Bound OpenGL");
/* api, version only matters for gles */
if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_OPENGL, 0, error)) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
for (i = 0; i < G_N_ELEMENTS (opengl_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if (GST_GL_CHECK_GL_VERSION (opengl_versions[i].major,
opengl_versions[i].minor, 3, 2)) {
/* skip gl3 contexts if requested */
if ((gl_api & GST_GL_API_OPENGL3) == 0)
continue;
chosen_gl_api = GST_GL_API_OPENGL3;
#if defined(EGL_KHR_create_context)
profileMask |= EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
#endif
} else if (opengl_versions[i].major == 3 && opengl_versions[i].minor == 1) {
/* skip 3.1, the implementation is free to give us either a core or a
* compatibility context (we have no say) */
continue;
} else {
/* skip legacy contexts if requested */
if ((gl_api & GST_GL_API_OPENGL) == 0)
continue;
chosen_gl_api = GST_GL_API_OPENGL;
}
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
chosen_gl_api, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
#if defined(EGL_KHR_create_context)
profileMask &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
chosen_gl_api, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
#endif
}
egl->gl_api = chosen_gl_api;
} else if (gl_api & GST_GL_API_GLES2) {
gint i;
try_gles2:
if (!eglBindAPI (EGL_OPENGL_ES_API)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to bind OpenGL|ES API: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
GST_INFO ("Bound OpenGL|ES");
for (i = 0; i < G_N_ELEMENTS (gles2_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
guint maj = gles2_versions[i].major;
guint min = gles2_versions[i].minor;
if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_GLES2, maj, error)) {
GST_DEBUG_OBJECT (context, "Failed to choose a GLES%d config: %s",
maj, error && *error ? (*error)->message : "Unknown");
g_clear_error (error);
continue;
}
#if defined(EGL_KHR_create_context)
/* try a debug context */
contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
GST_GL_API_GLES2, maj, min, contextFlags, profileMask);
if (egl->egl_context)
break;
/* try without a debug context */
contextFlags &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
#endif
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
GST_GL_API_GLES2, maj, min, contextFlags, profileMask);
if (egl->egl_context)
break;
}
egl->gl_api = GST_GL_API_GLES2;
}
if (egl->egl_context != EGL_NO_CONTEXT) {
GST_INFO ("gl context created: %" G_GUINTPTR_FORMAT,
(guintptr) egl->egl_context);
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"Failed to create a OpenGL context: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
/* FIXME do we want a window vfunc ? */
#if GST_GL_HAVE_WINDOW_X11
if (GST_IS_GL_WINDOW_X11 (context->window)) {
gst_gl_window_x11_create_window ((GstGLWindowX11 *) context->window);
}
#endif
if (other_context == NULL) {
/* FIXME: fails to show two outputs at all. We need a property/option for
* glimagesink to say its a visible context */
#if GST_GL_HAVE_WINDOW_WAYLAND
if (GST_IS_GL_WINDOW_WAYLAND_EGL (context->window)) {
gst_gl_window_wayland_egl_create_window ((GstGLWindowWaylandEGL *)
context->window);
}
#endif
#if GST_GL_HAVE_WINDOW_WIN32
if (GST_IS_GL_WINDOW_WIN32 (context->window)) {
gst_gl_window_win32_create_window ((GstGLWindowWin32 *) context->window);
}
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
if (GST_IS_GL_WINDOW_DISPMANX_EGL (context->window)) {
gst_gl_window_dispmanx_egl_create_window ((GstGLWindowDispmanxEGL *)
context->window);
}
#endif
#if GST_GL_HAVE_WINDOW_GBM
if (GST_IS_GL_WINDOW_GBM_EGL (context->window)) {
gst_gl_window_gbm_egl_create_window ((GstGLWindowGBMEGL *)
context->window);
}
#endif
}
if (window)
window_handle = gst_gl_window_get_window_handle (window);
if (window_handle) {
#if GST_GL_HAVE_WINDOW_WINRT
const EGLint attrs[] = {
/* EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER is an optimization that can
* have large performance benefits on mobile devices. */
EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER, EGL_TRUE,
EGL_NONE
};
#else
const EGLint *attrs = NULL;
#endif
GST_DEBUG ("Creating EGLSurface from window_handle %p",
(void *) window_handle);
egl->egl_surface =
eglCreateWindowSurface (egl->egl_display, egl->egl_config,
(EGLNativeWindowType) window_handle, attrs);
/* Store window handle for later comparison */
egl->window_handle = window_handle;
} else if (!gst_gl_check_extension ("EGL_KHR_surfaceless_context",
egl->egl_exts)) {
EGLint surface_attrib[7];
gint j = 0;
GST_DEBUG ("Surfaceless context, creating PBufferSurface");
/* FIXME: Width/height doesn't seem to matter but we can't leave them
* at 0, otherwise X11 complains about BadValue */
surface_attrib[j++] = EGL_WIDTH;
surface_attrib[j++] = 1;
surface_attrib[j++] = EGL_HEIGHT;
surface_attrib[j++] = 1;
surface_attrib[j++] = EGL_LARGEST_PBUFFER;
surface_attrib[j++] = EGL_TRUE;
surface_attrib[j++] = EGL_NONE;
egl->egl_surface =
eglCreatePbufferSurface (egl->egl_display, egl->egl_config,
surface_attrib);
} else {
GST_DEBUG ("No surface/handle !");
egl->egl_surface = EGL_NO_SURFACE;
need_surface = FALSE;
}
if (need_surface) {
if (egl->egl_surface != EGL_NO_SURFACE) {
GST_INFO ("surface created");
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to create window surface: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
}
egl->egl_major = egl_major;
egl->egl_minor = egl_minor;
if (window)
gst_object_unref (window);
return TRUE;
failure:
if (window)
gst_object_unref (window);
return FALSE;
}
static void
gst_gl_context_egl_destroy_context (GstGLContext * context)
{
GstGLContextEGL *egl;
egl = GST_GL_CONTEXT_EGL (context);
gst_gl_context_egl_activate (context, FALSE);
if (egl->egl_surface) {
eglDestroySurface (egl->egl_display, egl->egl_surface);
egl->egl_surface = EGL_NO_SURFACE;
}
if (egl->egl_context) {
eglDestroyContext (egl->egl_display, egl->egl_context);
egl->egl_context = NULL;
}
egl->window_handle = 0;
eglReleaseThread ();
if (egl->display_egl) {
gst_object_unref (egl->display_egl);
egl->display_egl = NULL;
}
}
static gboolean
gst_gl_context_egl_activate (GstGLContext * context, gboolean activate)
{
GstGLContextEGL *egl;
gboolean result;
egl = GST_GL_CONTEXT_EGL (context);
if (activate) {
GstGLWindow *window = gst_gl_context_get_window (context);
guintptr handle = 0;
/* Check if the backing handle changed */
if (window) {
handle = gst_gl_window_get_window_handle (window);
gst_object_unref (window);
}
if (handle && handle != egl->window_handle) {
#if GST_GL_HAVE_WINDOW_WINRT
const EGLint attrs[] = {
/* EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER is an optimization that can
* have large performance benefits on mobile devices. */
EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER, EGL_TRUE,
EGL_NONE
};
#else
const EGLint *attrs = NULL;
#endif
GST_DEBUG_OBJECT (context,
"Handle changed (have:%p, now:%p), switching surface",
(void *) egl->window_handle, (void *) handle);
if (egl->egl_surface) {
result = eglDestroySurface (egl->egl_display, egl->egl_surface);
egl->egl_surface = EGL_NO_SURFACE;
if (!result) {
GST_ERROR_OBJECT (context, "Failed to destroy old window surface: %s",
gst_egl_get_error_string (eglGetError ()));
goto done;
}
}
egl->egl_surface =
eglCreateWindowSurface (egl->egl_display, egl->egl_config,
(EGLNativeWindowType) handle, attrs);
egl->window_handle = handle;
if (egl->egl_surface == EGL_NO_SURFACE) {
GST_ERROR_OBJECT (context, "Failed to create window surface: %s",
gst_egl_get_error_string (eglGetError ()));
result = FALSE;
goto done;
}
}
result = eglMakeCurrent (egl->egl_display, egl->egl_surface,
egl->egl_surface, egl->egl_context);
} else {
result = eglMakeCurrent (egl->egl_display, EGL_NO_SURFACE,
EGL_NO_SURFACE, EGL_NO_CONTEXT);
}
if (!result) {
GST_ERROR_OBJECT (context,
"Failed to bind context to the current rendering thread: %s",
gst_egl_get_error_string (eglGetError ()));
}
done:
return result;
}
static guintptr
gst_gl_context_egl_get_gl_context (GstGLContext * context)
{
return (guintptr) GST_GL_CONTEXT_EGL (context)->egl_context;
}
static void
gst_gl_context_egl_swap_buffers (GstGLContext * context)
{
GstGLContextEGL *egl;
egl = GST_GL_CONTEXT_EGL (context);
eglSwapBuffers (egl->egl_display, egl->egl_surface);
}
static GstGLAPI
gst_gl_context_egl_get_gl_api (GstGLContext * context)
{
return GST_GL_CONTEXT_EGL (context)->gl_api;
}
static GstGLPlatform
gst_gl_context_egl_get_gl_platform (GstGLContext * context)
{
return GST_GL_PLATFORM_EGL;
}
static GModule *module_egl;
static gpointer
load_egl_module (gpointer user_data)
{
#ifdef GST_GL_LIBEGL_MODULE_NAME
module_egl = g_module_open (GST_GL_LIBEGL_MODULE_NAME, G_MODULE_BIND_LAZY);
#else
/* On Linux the .so is only in -dev packages, try with a real soname
* Proper compilers will optimize away the strcmp */
if (g_strcmp0 (G_MODULE_SUFFIX, "so") == 0)
module_egl = g_module_open ("libEGL.so.1", G_MODULE_BIND_LAZY);
/* This automatically handles the suffix and even .la files */
if (!module_egl)
module_egl = g_module_open ("libEGL", G_MODULE_BIND_LAZY);
#endif
return NULL;
}
gpointer
gst_gl_context_egl_get_proc_address (GstGLAPI gl_api, const gchar * name)
{
gpointer result = NULL;
static GOnce g_once = G_ONCE_INIT;
#ifdef __APPLE__
#if GST_GL_HAVE_OPENGL && !defined(GST_GL_LIBGL_MODULE_NAME)
if (!result && (gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3))) {
static GModule *module_opengl = NULL;
if (g_once_init_enter (&module_opengl)) {
GModule *setup_module_opengl =
g_module_open ("libGL.dylib", G_MODULE_BIND_LAZY);
g_once_init_leave (&module_opengl, setup_module_opengl);
}
if (module_opengl)
g_module_symbol (module_opengl, name, &result);
}
#endif
#if GST_GL_HAVE_GLES2 && !defined(GST_GL_LIBGLESV2_MODULE_NAME)
if (!result && (gl_api & (GST_GL_API_GLES2))) {
static GModule *module_gles2 = NULL;
if (g_once_init_enter (&module_gles2)) {
GModule *setup_module_gles2 =
g_module_open ("libGLESv2.dylib", G_MODULE_BIND_LAZY);
g_once_init_leave (&module_gles2, setup_module_gles2);
}
if (module_gles2)
g_module_symbol (module_gles2, name, &result);
}
#endif
#endif // __APPLE__
if (!result)
result = gst_gl_context_default_get_proc_address (gl_api, name);
g_once (&g_once, load_egl_module, NULL);
if (!result && module_egl) {
g_module_symbol (module_egl, name, &result);
}
/* FIXME: On Android this returns wrong addresses for non-EGL functions */
#if GST_GL_HAVE_WINDOW_ANDROID
if (!result && g_str_has_prefix (name, "egl")) {
#else
if (!result) {
result = eglGetProcAddress (name);
#endif
}
return result;
}
static gboolean
gst_gl_context_egl_check_feature (GstGLContext * context, const gchar * feature)
{
GstGLContextEGL *context_egl = GST_GL_CONTEXT_EGL (context);
return gst_gl_check_extension (feature, context_egl->egl_exts);
}
guintptr
gst_gl_context_egl_get_current_context (void)
{
return (guintptr) eglGetCurrentContext ();
}
static void
gst_gl_context_egl_get_gl_platform_version (GstGLContext * context,
gint * major, gint * minor)
{
GstGLContextEGL *context_egl = GST_GL_CONTEXT_EGL (context);
*major = context_egl->egl_major;
*minor = context_egl->egl_minor;
}
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