static GUBGraphicContext *gub_create_graphic_context_egl(GstPipeline *pipeline, float crop_left, float crop_top, float crop_right, float crop_bottom)
{
static const GLfloat vVertices[] = {
-1.f, -1.f, 0.f, 0.f,
-1.f, 1.f, 0.f, 1.f,
1.f, -1.f, 1.f, 0.f,
1.f, 1.f, 1.f, 1.f
};
guintptr raw_context;
GstStructure *s;
GstGLDisplay *display;
GstGLContext *gl_context;
GUBGraphicContextEGL *gcontext;
raw_context = gst_gl_context_get_current_gl_context(GST_GL_PLATFORM_EGL);
if (!raw_context) {
gub_log("Could not retrieve current EGL context");
return NULL;
}
display = (GstGLDisplay *)gst_gl_display_egl_new();
gl_context = gst_gl_context_new_wrapped(display, raw_context, GST_GL_PLATFORM_EGL, GST_GL_API_GLES2);
gub_log("Current GL context is %p (GSTGL Platform %s GSTGL API %s)", raw_context,
gst_gl_platform_to_string(gst_gl_context_get_gl_platform(gl_context)),
gst_gl_api_to_string(gst_gl_context_get_gl_api(gl_context)));
gub_log("VENDOR: %s", glGetString(GL_VENDOR));
gub_log("RENDERER: %s", glGetString(GL_RENDERER));
gub_log("VERSION: %s", glGetString(GL_VERSION));
gub_log("GLSL VERSION: %s", glGetString(GL_SHADING_LANGUAGE_VERSION));
gcontext = (GUBGraphicContextEGL *)malloc(sizeof(GUBGraphicContextEGL));
gcontext->gl = gl_context;
gcontext->display = display;
gcontext->crop_left = crop_left;
gcontext->crop_top = crop_top;
gcontext->crop_right = crop_right;
gcontext->crop_bottom = crop_bottom;
glGenFramebuffers(1, &gcontext->fbo);
if (gl_context->gl_vtable->GenVertexArrays)
gl_context->gl_vtable->GenVertexArrays(1, &gcontext->vao);
if (gcontext->gl->gl_vtable->BindVertexArray)
gcontext->gl->gl_vtable->BindVertexArray(gcontext->vao);
glGenBuffers(1, &gcontext->vbo);
glBindBuffer(GL_ARRAY_BUFFER, gcontext->vbo);
glBufferData(GL_ARRAY_BUFFER, 16 * sizeof(GLfloat), vVertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
gcontext->po = gub_create_program();
gcontext->samplerLoc = glGetUniformLocation(gcontext->po, "sTexture");
return gcontext;
}
/**
* gst_gl_display_filter_gl_api:
* @display: a #GstGLDisplay
* @gl_api: a #GstGLAPI to filter with
*
* limit the use of OpenGL to the requested @gl_api. This is intended to allow
* application and elements to request a specific set of OpenGL API's based on
* what they support. See gst_gl_context_get_gl_api() for the retreiving the
* API supported by a #GstGLContext.
*/
void
gst_gl_display_filter_gl_api (GstGLDisplay * display, GstGLAPI gl_api)
{
gchar *gl_api_s;
g_return_if_fail (GST_IS_GL_DISPLAY (display));
gl_api_s = gst_gl_api_to_string (gl_api);
GST_TRACE_OBJECT (display, "filtering with api %s", gl_api_s);
g_free (gl_api_s);
GST_OBJECT_LOCK (display);
display->priv->gl_api &= gl_api;
GST_OBJECT_UNLOCK (display);
}
static GstPadProbeReturn
query_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
APP_STATE_T *state = (APP_STATE_T *) user_data;
GstQuery *query = GST_PAD_PROBE_INFO_QUERY (info);
GstStructure *external_gl_context_desc = NULL;
gchar *platform = NULL;
gchar *gl_apis = NULL;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ALLOCATION:
{
platform = gst_gl_platform_to_string (GST_GL_PLATFORM_EGL);
gl_apis = gst_gl_api_to_string (GST_GL_API_GLES2);
external_gl_context_desc =
gst_structure_new ("GstVideoGLTextureUploadMeta",
"gst.gl.context.handle", G_TYPE_POINTER, state->context,
"gst.gl.context.type", G_TYPE_STRING, platform,
"gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL);
gst_query_add_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, external_gl_context_desc);
gst_structure_free (external_gl_context_desc);
g_free (gl_apis);
g_free (platform);
GST_DEBUG ("done alocation");
return GST_PAD_PROBE_OK;
break;
}
case GST_QUERY_CONTEXT:
{
return gst_gl_handle_context_query (state->pipeline, query,
(GstGLDisplay **) & state->gst_display);
break;
}
case GST_QUERY_DRAIN:
{
flush_internal (state);
break;
}
default:
break;
}
return GST_PAD_PROBE_OK;
}
static gboolean
gst_glimage_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (bsink);
GstBufferPool *pool;
GstStructure *config;
GstCaps *caps;
guint size;
gboolean need_pool;
GstStructure *gl_context;
gchar *platform, *gl_apis;
gpointer handle;
if (!_ensure_gl_setup (glimage_sink))
return FALSE;
gst_query_parse_allocation (query, &caps, &need_pool);
if (caps == NULL)
goto no_caps;
if ((pool = glimage_sink->pool))
gst_object_ref (pool);
if (pool != NULL) {
GstCaps *pcaps;
/* we had a pool, check caps */
GST_DEBUG_OBJECT (glimage_sink, "check existing pool caps");
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
if (!gst_caps_is_equal (caps, pcaps)) {
GST_DEBUG_OBJECT (glimage_sink, "pool has different caps");
/* different caps, we can't use this pool */
gst_object_unref (pool);
pool = NULL;
}
gst_structure_free (config);
}
if (pool == NULL && need_pool) {
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps))
goto invalid_caps;
GST_DEBUG_OBJECT (glimage_sink, "create new pool");
pool = gst_gl_buffer_pool_new (glimage_sink->context);
/* the normal size of a frame */
size = info.size;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
}
/* we need at least 2 buffer because we hold on to the last one */
gst_query_add_allocation_pool (query, pool, size, 2, 0);
/* we also support various metadata */
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
gst_object_unref (pool);
gl_apis =
gst_gl_api_to_string (gst_gl_context_get_gl_api (glimage_sink->context));
platform =
gst_gl_platform_to_string (gst_gl_context_get_gl_platform
(glimage_sink->context));
handle = (gpointer) gst_gl_context_get_gl_context (glimage_sink->context);
gl_context =
gst_structure_new ("GstVideoGLTextureUploadMeta", "gst.gl.GstGLContext",
GST_GL_TYPE_CONTEXT, glimage_sink->context, "gst.gl.context.handle",
G_TYPE_POINTER, handle, "gst.gl.context.type", G_TYPE_STRING, platform,
"gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL);
gst_query_add_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, gl_context);
g_free (gl_apis);
g_free (platform);
gst_structure_free (gl_context);
return TRUE;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (bsink, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (bsink, "invalid caps specified");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (bsink, "failed setting config");
return FALSE;
}
}
//gboolean
//gst_gl_context_create (GstGLContext * context, GstGLContext * other_context, GError ** error)
static gpointer
gst_gl_context_create_thread (GstGLContext * context)
{
GstGLContextClass *context_class;
GstGLWindowClass *window_class;
GstGLFuncs *gl;
gboolean ret = FALSE;
GstGLAPI compiled_api, user_api, gl_api;
gchar *api_string;
gchar *compiled_api_s;
gchar *user_api_string;
const gchar *user_choice;
GError **error;
GstGLContext *other_context;
GString *ext_g_str = NULL;
const gchar *ext_const_c_str = NULL;
g_mutex_lock (&context->priv->render_lock);
error = context->priv->error;
other_context = context->priv->other_context;
context_class = GST_GL_CONTEXT_GET_CLASS (context);
window_class = GST_GL_WINDOW_GET_CLASS (context->window);
if (window_class->open) {
if (!window_class->open (context->window, error)) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
}
gl = context->gl_vtable;
compiled_api = _compiled_api ();
user_choice = g_getenv ("GST_GL_API");
user_api = gst_gl_api_from_string (user_choice);
user_api_string = gst_gl_api_to_string (user_api);
compiled_api_s = gst_gl_api_to_string (compiled_api);
if ((user_api & compiled_api) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"Cannot create context with the user requested api (%s). "
"We have support for (%s)", user_api_string, compiled_api_s);
g_free (user_api_string);
g_free (compiled_api_s);
goto failure;
}
if (context_class->choose_format &&
!context_class->choose_format (context, error)) {
g_assert (error == NULL || *error != NULL);
g_free (compiled_api_s);
g_free (user_api_string);
goto failure;
}
GST_INFO ("Attempting to create opengl context. user chosen api(s) (%s), "
"compiled api support (%s)", user_api_string, compiled_api_s);
if (!context_class->create_context (context, compiled_api & user_api,
other_context, error)) {
g_assert (error == NULL || *error != NULL);
g_free (compiled_api_s);
g_free (user_api_string);
goto failure;
}
GST_INFO ("created context");
if (!context_class->activate (context, TRUE)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"Failed to activate the GL Context");
g_free (compiled_api_s);
g_free (user_api_string);
goto failure;
}
gl_api = gst_gl_context_get_gl_api (context);
g_assert (gl_api != GST_GL_API_NONE && gl_api != GST_GL_API_ANY);
api_string = gst_gl_api_to_string (gl_api);
GST_INFO ("available GL APIs: %s", api_string);
if (((compiled_api & gl_api) & user_api) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"failed to create context, context "
"could not provide correct api. user (%s), compiled (%s), context (%s)",
user_api_string, compiled_api_s, api_string);
g_free (api_string);
g_free (compiled_api_s);
g_free (user_api_string);
goto failure;
}
g_free (api_string);
g_free (compiled_api_s);
g_free (user_api_string);
gl->GetError = gst_gl_context_get_proc_address (context, "glGetError");
gl->GetString = gst_gl_context_get_proc_address (context, "glGetString");
gl->GetStringi = gst_gl_context_get_proc_address (context, "glGetStringi");
gl->GetIntegerv = gst_gl_context_get_proc_address (context, "glGetIntegerv");
if (!gl->GetError || !gl->GetString) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"could not GetProcAddress core opengl functions");
goto failure;
}
/* gl api specific code */
ret = _create_context_info (context, gl_api, &context->priv->gl_major,
&context->priv->gl_minor, error);
if (!ret) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
/* GL core contexts and GLES3 */
if (gl->GetIntegerv && gl->GetStringi && context->priv->gl_major >= 3)
ext_g_str = _build_extension_string (context);
if (ext_g_str && ext_g_str->len) {
GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_g_str->str);
_gst_gl_feature_check_ext_functions (context, context->priv->gl_major,
context->priv->gl_minor, ext_g_str->str);
context->priv->gl_exts = g_string_free (ext_g_str, FALSE);
} else {
ext_const_c_str = (const gchar *) gl->GetString (GL_EXTENSIONS);
if (!ext_const_c_str)
ext_const_c_str = "";
GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_const_c_str);
_gst_gl_feature_check_ext_functions (context, context->priv->gl_major,
context->priv->gl_minor, ext_const_c_str);
context->priv->gl_exts = g_strdup (ext_const_c_str);
}
context->priv->alive = TRUE;
g_cond_signal (&context->priv->create_cond);
// g_mutex_unlock (&context->priv->render_lock);
gst_gl_window_send_message_async (context->window,
(GstGLWindowCB) _unlock_create_thread, context, NULL);
gst_gl_window_run (context->window);
GST_INFO ("loop exited\n");
g_mutex_lock (&context->priv->render_lock);
context->priv->alive = FALSE;
context_class->activate (context, FALSE);
context_class->destroy_context (context);
/* User supplied callback */
if (context->window->close)
context->window->close (context->window->close_data);
/* window specific shutdown */
if (window_class->close) {
window_class->close (context->window);
}
g_cond_signal (&context->priv->destroy_cond);
g_mutex_unlock (&context->priv->render_lock);
return NULL;
failure:
{
g_cond_signal (&context->priv->create_cond);
g_mutex_unlock (&context->priv->render_lock);
return NULL;
}
}
static gboolean
gst_gl_mixer_propose_allocation (GstGLMixer * mix,
GstQuery * decide_query, GstQuery * query)
{
GstBufferPool *pool;
GstStructure *config;
GstCaps *caps;
guint size = 0;
gboolean need_pool;
GError *error = NULL;
GstStructure *gl_context;
gchar *platform, *gl_apis;
gpointer handle;
GstAllocator *allocator = NULL;
GstAllocationParams params;
gst_query_parse_allocation (query, &caps, &need_pool);
if (caps == NULL)
goto no_caps;
if ((pool = mix->priv->pool))
gst_object_ref (pool);
if (pool != NULL) {
GstCaps *pcaps;
/* we had a pool, check caps */
GST_DEBUG_OBJECT (mix, "check existing pool caps");
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
if (!gst_caps_is_equal (caps, pcaps)) {
GST_DEBUG_OBJECT (mix, "pool has different caps");
/* different caps, we can't use this pool */
gst_object_unref (pool);
pool = NULL;
}
gst_structure_free (config);
}
if (!gst_gl_ensure_display (mix, &mix->display))
return FALSE;
if (!mix->context) {
mix->context = gst_gl_context_new (mix->display);
if (!gst_gl_context_create (mix->context, NULL, &error))
goto context_error;
}
if (pool == NULL && need_pool) {
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps))
goto invalid_caps;
GST_DEBUG_OBJECT (mix, "create new pool");
pool = gst_gl_buffer_pool_new (mix->context);
/* the normal size of a frame */
size = info.size;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
}
if (pool) {
gst_query_add_allocation_pool (query, pool, size, 1, 0);
gst_object_unref (pool);
}
/* we also support various metadata */
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
gl_apis = gst_gl_api_to_string (gst_gl_context_get_gl_api (mix->context));
platform =
gst_gl_platform_to_string (gst_gl_context_get_gl_platform (mix->context));
handle = (gpointer) gst_gl_context_get_gl_context (mix->context);
gl_context =
gst_structure_new ("GstVideoGLTextureUploadMeta", "gst.gl.GstGLContext",
GST_GL_TYPE_CONTEXT, mix->context, "gst.gl.context.handle",
G_TYPE_POINTER, handle, "gst.gl.context.type", G_TYPE_STRING, platform,
"gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL);
gst_query_add_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, gl_context);
g_free (gl_apis);
g_free (platform);
gst_structure_free (gl_context);
gst_allocation_params_init (¶ms);
allocator = gst_allocator_find (GST_GL_MEMORY_ALLOCATOR);
gst_query_add_allocation_param (query, allocator, ¶ms);
gst_object_unref (allocator);
return TRUE;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (mix, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (mix, "invalid caps specified");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (mix, "failed setting config");
return FALSE;
}
context_error:
{
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
(NULL));
return FALSE;
}
}
static gboolean
gst_gl_base_mixer_decide_allocation (GstGLBaseMixer * mix, GstQuery * query)
{
GstGLBaseMixerClass *mix_class = GST_GL_BASE_MIXER_GET_CLASS (mix);
GError *error = NULL;
gboolean ret = TRUE;
if (!gst_gl_ensure_element_data (mix, &mix->display,
&mix->priv->other_context))
return FALSE;
gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
_find_local_gl_context (mix);
if (!mix->context) {
GST_OBJECT_LOCK (mix->display);
do {
if (mix->context) {
gst_object_unref (mix->context);
mix->context = NULL;
}
/* just get a GL context. we don't care */
mix->context =
gst_gl_display_get_gl_context_for_thread (mix->display, NULL);
if (!mix->context) {
if (!gst_gl_display_create_context (mix->display,
mix->priv->other_context, &mix->context, &error)) {
GST_OBJECT_UNLOCK (mix->display);
goto context_error;
}
}
} while (!gst_gl_display_add_context (mix->display, mix->context));
GST_OBJECT_UNLOCK (mix->display);
}
{
GstGLAPI current_gl_api = gst_gl_context_get_gl_api (mix->context);
if ((current_gl_api & mix_class->supported_gl_api) == 0)
goto unsupported_gl_api;
}
if (mix_class->decide_allocation)
ret = mix_class->decide_allocation (mix, query);
return ret;
unsupported_gl_api:
{
GstGLAPI gl_api = gst_gl_context_get_gl_api (mix->context);
gchar *gl_api_str = gst_gl_api_to_string (gl_api);
gchar *supported_gl_api_str =
gst_gl_api_to_string (mix_class->supported_gl_api);
GST_ELEMENT_ERROR (mix, RESOURCE, BUSY,
("GL API's not compatible context: %s supported: %s", gl_api_str,
supported_gl_api_str), (NULL));
g_free (supported_gl_api_str);
g_free (gl_api_str);
return FALSE;
}
context_error:
{
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
(NULL));
g_clear_error (&error);
return FALSE;
}
}
//gboolean
//gst_gl_context_create (GstGLContext * context, GstGLContext * other_context, GError ** error)
static gpointer
gst_gl_context_create_thread (GstGLContext * context)
{
GstGLContextClass *context_class;
GstGLWindowClass *window_class;
GstGLFuncs *gl;
GstGLAPI compiled_api, user_api, gl_api, display_api;
gchar *api_string;
gchar *compiled_api_s;
gchar *user_api_s;
gchar *display_api_s;
const gchar *user_choice;
GError **error;
GstGLContext *other_context;
g_mutex_lock (&context->priv->render_lock);
GST_DEBUG_OBJECT (context, "Creating thread");
error = context->priv->error;
other_context = g_weak_ref_get (&context->priv->other_context_ref);
context_class = GST_GL_CONTEXT_GET_CLASS (context);
window_class = GST_GL_WINDOW_GET_CLASS (context->window);
display_api = gst_gl_display_get_gl_api_unlocked (context->display);
if (display_api == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"Cannot create context with satisfying requested apis "
"(display has no GL api!)");
goto failure;
}
if (window_class->open) {
if (!window_class->open (context->window, error)) {
GST_WARNING_OBJECT (context, "Failed to open window");
g_assert (error == NULL || *error != NULL);
goto failure;
}
}
gl = context->gl_vtable;
compiled_api = _compiled_api ();
compiled_api_s = gst_gl_api_to_string (compiled_api);
user_choice = g_getenv ("GST_GL_API");
user_api = gst_gl_api_from_string (user_choice);
user_api_s = gst_gl_api_to_string (user_api);
display_api_s = gst_gl_api_to_string (display_api);
if ((user_api & compiled_api & display_api) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"Cannot create context with the user requested api (%s). "
"We have support for (%s), display api (%s)", user_api_s,
compiled_api_s, display_api_s);
g_free (user_api_s);
g_free (compiled_api_s);
g_free (display_api_s);
goto failure;
}
if (context_class->choose_format &&
!context_class->choose_format (context, error)) {
GST_WARNING_OBJECT (context, "Failed to choose format");
g_assert (error == NULL || *error != NULL);
g_free (compiled_api_s);
g_free (user_api_s);
g_free (display_api_s);
goto failure;
}
GST_INFO_OBJECT (context,
"Attempting to create opengl context. user chosen api(s) (%s), "
"compiled api support (%s) display api (%s)", user_api_s, compiled_api_s,
display_api_s);
if (!context_class->create_context (context,
compiled_api & user_api & display_api, other_context, error)) {
GST_WARNING_OBJECT (context, "Failed to create context");
g_assert (error == NULL || *error != NULL);
g_free (compiled_api_s);
g_free (user_api_s);
g_free (display_api_s);
goto failure;
}
GST_INFO_OBJECT (context, "created context");
if (!gst_gl_context_activate (context, TRUE)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"Failed to activate the GL Context");
g_free (compiled_api_s);
g_free (user_api_s);
g_free (display_api_s);
goto failure;
}
gl_api = gst_gl_context_get_gl_api (context);
g_assert (gl_api != GST_GL_API_NONE && gl_api != GST_GL_API_ANY);
api_string = gst_gl_api_to_string (gl_api);
GST_INFO_OBJECT (context, "available GL APIs: %s", api_string);
if (((compiled_api & gl_api & display_api) & user_api) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"failed to create context, context "
"could not provide correct api. user (%s), compiled (%s), context (%s)",
user_api_s, compiled_api_s, api_string);
g_free (api_string);
g_free (compiled_api_s);
g_free (user_api_s);
g_free (display_api_s);
goto failure;
}
g_free (api_string);
g_free (compiled_api_s);
g_free (user_api_s);
g_free (display_api_s);
GST_DEBUG_OBJECT (context, "Filling info");
if (!gst_gl_context_fill_info (context, error)) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
context->priv->alive = TRUE;
if (gl->DebugMessageCallback) {
#if !defined(GST_DISABLE_GST_DEBUG)
GST_INFO_OBJECT (context, "Enabling GL context debugging");
/* enable them all */
gl->DebugMessageControl (GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0,
GL_TRUE);
gl->DebugMessageCallback (_gst_gl_debug_callback, context);
#endif
}
if (other_context) {
GST_DEBUG_OBJECT (context, "Unreffing other_context %" GST_PTR_FORMAT,
other_context);
gst_object_unref (other_context);
}
g_cond_signal (&context->priv->create_cond);
// g_mutex_unlock (&context->priv->render_lock);
gst_gl_window_send_message_async (context->window,
(GstGLWindowCB) _unlock_create_thread, context, NULL);
gst_gl_window_run (context->window);
GST_INFO_OBJECT (context, "loop exited");
g_mutex_lock (&context->priv->render_lock);
context->priv->alive = FALSE;
gst_gl_context_activate (context, FALSE);
context_class->destroy_context (context);
/* User supplied callback */
if (context->window->close)
context->window->close (context->window->close_data);
/* window specific shutdown */
if (window_class->close) {
window_class->close (context->window);
}
g_cond_signal (&context->priv->destroy_cond);
g_mutex_unlock (&context->priv->render_lock);
return NULL;
failure:
{
if (other_context)
gst_object_unref (other_context);
g_cond_signal (&context->priv->create_cond);
g_mutex_unlock (&context->priv->render_lock);
return NULL;
}
}
static gboolean
gst_gl_test_src_decide_allocation (GstBaseSrc * basesrc, GstQuery * query)
{
GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc);
GstBufferPool *pool = NULL;
GstStructure *config;
GstCaps *caps;
guint min, max, size;
gboolean update_pool;
GError *error = NULL;
if (!gst_gl_ensure_element_data (src, &src->display, &src->other_context))
return FALSE;
gst_gl_display_filter_gl_api (src->display, SUPPORTED_GL_APIS);
_find_local_gl_context (src);
if (!src->context) {
GST_OBJECT_LOCK (src->display);
do {
if (src->context) {
gst_object_unref (src->context);
src->context = NULL;
}
/* just get a GL context. we don't care */
src->context =
gst_gl_display_get_gl_context_for_thread (src->display, NULL);
if (!src->context) {
if (!gst_gl_display_create_context (src->display, src->other_context,
&src->context, &error)) {
GST_OBJECT_UNLOCK (src->display);
goto context_error;
}
}
} while (!gst_gl_display_add_context (src->display, src->context));
GST_OBJECT_UNLOCK (src->display);
}
if ((gst_gl_context_get_gl_api (src->context) & SUPPORTED_GL_APIS) == 0)
goto unsupported_gl_api;
gst_gl_context_thread_add (src->context,
(GstGLContextThreadFunc) _src_generate_fbo_gl, src);
if (!src->fbo)
goto context_error;
gst_query_parse_allocation (query, &caps, NULL);
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
update_pool = TRUE;
} else {
GstVideoInfo vinfo;
gst_video_info_init (&vinfo);
gst_video_info_from_caps (&vinfo, caps);
size = vinfo.size;
min = max = 0;
update_pool = FALSE;
}
if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) {
/* can't use this pool */
if (pool)
gst_object_unref (pool);
pool = gst_gl_buffer_pool_new (src->context);
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_GL_SYNC_META);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
gst_buffer_pool_set_config (pool, config);
if (update_pool)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
gst_gl_test_src_init_shader (src);
gst_object_unref (pool);
return TRUE;
unsupported_gl_api:
{
GstGLAPI gl_api = gst_gl_context_get_gl_api (src->context);
gchar *gl_api_str = gst_gl_api_to_string (gl_api);
gchar *supported_gl_api_str = gst_gl_api_to_string (SUPPORTED_GL_APIS);
GST_ELEMENT_ERROR (src, RESOURCE, BUSY,
("GL API's not compatible context: %s supported: %s", gl_api_str,
supported_gl_api_str), (NULL));
g_free (supported_gl_api_str);
g_free (gl_api_str);
return FALSE;
}
context_error:
{
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, ("%s", error->message),
(NULL));
g_clear_error (&error);
if (src->context)
gst_object_unref (src->context);
src->context = NULL;
return FALSE;
}
}
