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[697/906] display: allow the user to try and choose the GL api we use via env variable

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GST_GL_API=opengl,opengl3,gles2,gles3
This commit is contained in:
Matthew Waters 2013-06-11 11:27:56 +10:00 committed by Tim-Philipp Müller
parent f5472457bf
commit ad31c9f8e2
1 changed files with 62 additions and 10 deletions
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72
gst-libs/gst/gl/gstgldisplay.c
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@ -418,6 +418,43 @@ _compiled_api (void)
return ret; return ret;
} }
GstGLAPI
_parse_gl_api (const gchar * apis_s)
{
GstGLAPI ret = GST_GL_API_NONE;
gchar *apis = (gchar *) apis_s;
while (apis) {
if (apis[0] == '\0') {
break;
} else if (apis[0] == ' ' || apis[0] == ',') {
apis = &apis[1];
} else if (g_strstr_len (apis, 7, "opengl3")) {
ret |= GST_GL_API_OPENGL3;
apis = &apis[7];
} else if (g_strstr_len (apis, 6, "opengl")) {
ret |= GST_GL_API_OPENGL;
apis = &apis[6];
} else if (g_strstr_len (apis, 5, "gles1")) {
ret |= GST_GL_API_GLES;
apis = &apis[5];
} else if (g_strstr_len (apis, 5, "gles2")) {
ret |= GST_GL_API_GLES2;
apis = &apis[5];
} else if (g_strstr_len (apis, 5, "gles3")) {
ret |= GST_GL_API_GLES3;
apis = &apis[5];
} else {
break;
}
}
if (ret == GST_GL_API_NONE)
ret = GST_GL_API_ANY;
return ret;
}
gpointer gpointer
gst_gl_display_thread_create_context (GstGLDisplay * display) gst_gl_display_thread_create_context (GstGLDisplay * display)
{ {
@ -425,9 +462,11 @@ gst_gl_display_thread_create_context (GstGLDisplay * display)
gint gl_major = 0; gint gl_major = 0;
gboolean ret = FALSE; gboolean ret = FALSE;
GError *error = NULL; GError *error = NULL;
GstGLAPI compiled_api; GstGLAPI compiled_api, user_api;
gchar *api_string; gchar *api_string;
gchar *compiled_api_s; gchar *compiled_api_s;
gchar *user_api_string;
const gchar *user_choice;
gst_gl_display_lock (display); gst_gl_display_lock (display);
@ -439,10 +478,22 @@ gst_gl_display_thread_create_context (GstGLDisplay * display)
goto failure; goto failure;
} }
if (!gst_gl_window_create_context (display->gl_window, compiled_api, user_choice = g_getenv ("GST_GL_API");
display->external_gl_context, &error)) {
user_api = _parse_gl_api (user_choice);
user_api_string = gst_gl_api_string (user_api);
compiled_api_s = gst_gl_api_string (compiled_api);
GST_INFO ("Attempting to create opengl context. user chosen api(s):%s, "
"compiled api support:%s", user_api_string, compiled_api_s);
if (!gst_gl_window_create_context (display->gl_window,
compiled_api & user_api, display->external_gl_context, &error)) {
gst_gl_display_set_error (display, gst_gl_display_set_error (display,
error ? error->message : "Failed to create gl window"); error ? error->message : "Failed to create gl window");
g_free (compiled_api_s);
g_free (user_api_string);
goto failure; goto failure;
} }
GST_INFO ("window created context"); GST_INFO ("window created context");
@ -454,18 +505,19 @@ gst_gl_display_thread_create_context (GstGLDisplay * display)
api_string = gst_gl_api_string (display->gl_api); api_string = gst_gl_api_string (display->gl_api);
GST_INFO ("available GL APIs: %s", api_string); GST_INFO ("available GL APIs: %s", api_string);
compiled_api_s = gst_gl_api_string (compiled_api); if (((compiled_api & display->gl_api) & user_api) == GST_GL_API_NONE) {
GST_INFO ("compiled api support: %s", compiled_api_s); gst_gl_display_set_error (display, "failed to create context, window "
"could not provide correct api. user:%s, compiled:%s, window:%s",
if ((compiled_api & display->gl_api) == GST_GL_API_NONE) { user_api_string, compiled_api_s, api_string);
gst_gl_display_set_error (display, "failed to create_context, window " g_free (api_string);
"could not provide correct api. compiled api supports:%s, window " g_free (compiled_api_s);
"supports:%s", compiled_api_s, api_string); g_free (user_api_string);
goto failure; goto failure;
} }
g_free (api_string); g_free (api_string);
g_free (compiled_api_s); g_free (compiled_api_s);
g_free (user_api_string);
gl->GetError = gl->GetError =
gst_gl_window_get_proc_address (display->gl_window, "glGetError"); gst_gl_window_get_proc_address (display->gl_window, "glGetError");