mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-01 12:20:42 +00:00
glbasesrc: add support for changing display's
This commit is contained in:
Matthew Waters
GStreamer Merge Bot
parent
4c008895ce
commit
de58d23b5c
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@ -54,6 +54,8 @@ struct _GstGLBaseSrcPrivate
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gboolean negotiated;
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gboolean gl_result;
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gboolean gl_started;
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GRecMutex context_lock;
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};
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/* Properties */
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@ -70,6 +72,7 @@ G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstGLBaseSrc, gst_gl_base_src,
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"glbasesrc", 0, "glbasesrc element");
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);
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static void gst_gl_base_src_finalize (GObject * object);
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static void gst_gl_base_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gl_base_src_get_property (GObject * object, guint prop_id,
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@ -98,6 +101,8 @@ static void gst_gl_base_src_default_gl_stop (GstGLBaseSrc * src);
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static gboolean gst_gl_base_src_default_fill_gl_memory (GstGLBaseSrc * src,
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GstGLMemory * mem);
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static gboolean gst_gl_base_src_find_gl_context_unlocked (GstGLBaseSrc * src);
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static void
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gst_gl_base_src_class_init (GstGLBaseSrcClass * klass)
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{
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@ -106,6 +111,7 @@ gst_gl_base_src_class_init (GstGLBaseSrcClass * klass)
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GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gobject_class->finalize = gst_gl_base_src_finalize;
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gobject_class->set_property = gst_gl_base_src_set_property;
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gobject_class->get_property = gst_gl_base_src_get_property;
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@ -142,12 +148,23 @@ gst_gl_base_src_init (GstGLBaseSrc * src)
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{
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src->priv = gst_gl_base_src_get_instance_private (src);
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src->priv->timestamp_offset = 0;
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g_rec_mutex_init (&src->priv->context_lock);
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/* we operate in time */
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gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
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gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
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}
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static void
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gst_gl_base_src_finalize (GObject * object)
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{
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GstGLBaseSrc *src = GST_GL_BASE_SRC (object);
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g_rec_mutex_clear (&src->priv->context_lock);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_gl_base_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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@ -184,7 +201,7 @@ gst_gl_base_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
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{
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GstGLBaseSrc *glbasesrc = GST_GL_BASE_SRC (bsrc);
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GST_DEBUG ("setcaps");
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GST_DEBUG_OBJECT (bsrc, "set caps %" GST_PTR_FORMAT, caps);
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if (!gst_video_info_from_caps (&glbasesrc->out_info, caps))
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goto wrong_caps;
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@ -198,7 +215,7 @@ gst_gl_base_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
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/* ERRORS */
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wrong_caps:
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{
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GST_WARNING ("wrong caps");
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GST_WARNING_OBJECT (bsrc, "wrong caps");
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return FALSE;
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}
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}
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@ -208,12 +225,27 @@ gst_gl_base_src_set_context (GstElement * element, GstContext * context)
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{
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GstGLBaseSrc *src = GST_GL_BASE_SRC (element);
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GstGLBaseSrcClass *klass = GST_GL_BASE_SRC_GET_CLASS (src);
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GstGLDisplay *old_display, *new_display;
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g_rec_mutex_lock (&src->priv->context_lock);
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old_display = src->display ? gst_object_ref (src->display) : NULL;
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gst_gl_handle_set_context (element, context, &src->display,
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&src->priv->other_context);
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if (src->display)
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gst_gl_display_filter_gl_api (src->display, klass->supported_gl_api);
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new_display = src->display ? gst_object_ref (src->display) : NULL;
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if (old_display && new_display) {
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if (old_display != new_display) {
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gst_clear_object (&src->context);
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if (gst_gl_base_src_find_gl_context_unlocked (src)) {
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gst_pad_mark_reconfigure (GST_BASE_SRC_PAD (src));
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}
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}
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}
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gst_clear_object (&old_display);
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gst_clear_object (&new_display);
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g_rec_mutex_unlock (&src->priv->context_lock);
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GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
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}
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@ -229,9 +261,13 @@ gst_gl_base_src_query (GstBaseSrc * bsrc, GstQuery * query)
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CONTEXT:
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{
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if (gst_gl_handle_context_query ((GstElement *) src, query,
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src->display, src->context, src->priv->other_context))
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return TRUE;
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gboolean ret;
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g_rec_mutex_lock (&src->priv->context_lock);
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ret = gst_gl_handle_context_query ((GstElement *) src, query,
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src->display, src->context, src->priv->other_context);
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g_rec_mutex_unlock (&src->priv->context_lock);
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if (ret)
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return ret;
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break;
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}
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case GST_QUERY_CONVERT:
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@ -288,6 +324,7 @@ gst_gl_base_src_gl_start (GstGLContext * context, gpointer data)
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GstGLBaseSrc *src = GST_GL_BASE_SRC (data);
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GstGLBaseSrcClass *src_class = GST_GL_BASE_SRC_GET_CLASS (src);
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GST_INFO_OBJECT (src, "starting");
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gst_gl_insert_debug_marker (src->context,
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"starting element %s", GST_OBJECT_NAME (src));
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@ -305,9 +342,12 @@ gst_gl_base_src_gl_stop (GstGLContext * context, gpointer data)
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GstGLBaseSrc *src = GST_GL_BASE_SRC (data);
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GstGLBaseSrcClass *src_class = GST_GL_BASE_SRC_GET_CLASS (src);
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GST_INFO_OBJECT (src, "stopping");
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gst_gl_insert_debug_marker (src->context,
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"stopping element %s", GST_OBJECT_NAME (src));
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src->priv->out_tex = NULL;
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if (src->priv->gl_started)
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src_class->gl_stop (src);
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@ -325,6 +365,7 @@ _fill_gl (GstGLContext * context, GstGLBaseSrc * src)
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{
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GstGLBaseSrcClass *klass = GST_GL_BASE_SRC_GET_CLASS (src);
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GST_TRACE_OBJECT (src, "filling gl memory %p", src->priv->out_tex);
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src->priv->gl_result = klass->fill_gl_memory (src, src->priv->out_tex);
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}
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@ -336,6 +377,7 @@ gst_gl_base_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
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GstVideoFrame out_frame;
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GstGLSyncMeta *sync_meta;
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g_rec_mutex_lock (&src->priv->context_lock);
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if (G_UNLIKELY (!src->priv->negotiated || !src->context))
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goto not_negotiated;
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@ -353,10 +395,6 @@ gst_gl_base_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
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gst_gl_context_thread_add (src->context, (GstGLContextThreadFunc) _fill_gl,
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src);
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if (!src->priv->gl_result) {
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gst_video_frame_unmap (&out_frame);
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goto gl_error;
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}
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gst_video_frame_unmap (&out_frame);
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if (!src->priv->gl_result)
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goto gl_error;
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@ -364,6 +402,7 @@ gst_gl_base_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
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sync_meta = gst_buffer_get_gl_sync_meta (buffer);
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if (sync_meta)
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gst_gl_sync_meta_set_sync_point (sync_meta, src->context);
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g_rec_mutex_unlock (&src->priv->context_lock);
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GST_BUFFER_TIMESTAMP (buffer) =
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src->priv->timestamp_offset + src->running_time;
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@ -386,18 +425,21 @@ gst_gl_base_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
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gl_error:
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{
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g_rec_mutex_unlock (&src->priv->context_lock);
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GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (_("failed to draw pattern")),
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(_("A GL error occurred")));
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return GST_FLOW_NOT_NEGOTIATED;
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}
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not_negotiated:
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{
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g_rec_mutex_unlock (&src->priv->context_lock);
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GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
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(_("format wasn't negotiated before get function")));
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return GST_FLOW_NOT_NEGOTIATED;
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}
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eos:
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{
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g_rec_mutex_unlock (&src->priv->context_lock);
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GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d",
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(gint) src->priv->n_frames);
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return GST_FLOW_EOS;
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@ -421,6 +463,7 @@ gst_gl_base_src_stop (GstBaseSrc * basesrc)
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{
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GstGLBaseSrc *src = GST_GL_BASE_SRC (basesrc);
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g_rec_mutex_lock (&src->priv->context_lock);
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gst_caps_replace (&src->out_caps, NULL);
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if (src->context) {
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@ -430,6 +473,7 @@ gst_gl_base_src_stop (GstBaseSrc * basesrc)
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gst_object_unref (src->context);
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}
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src->context = NULL;
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g_rec_mutex_unlock (&src->priv->context_lock);
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return TRUE;
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}
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@ -437,25 +481,29 @@ gst_gl_base_src_stop (GstBaseSrc * basesrc)
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static gboolean
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_find_local_gl_context (GstGLBaseSrc * src)
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{
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if (gst_gl_query_local_gl_context (GST_ELEMENT (src), GST_PAD_SRC,
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&src->context))
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return TRUE;
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GstGLContext *context = src->context;
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if (gst_gl_query_local_gl_context (GST_ELEMENT (src), GST_PAD_SRC, &context)) {
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if (context->display == src->display) {
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src->context = context;
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return TRUE;
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}
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if (context != src->context)
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gst_clear_object (&context);
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}
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return FALSE;
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}
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static gboolean
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gst_gl_base_src_decide_allocation (GstBaseSrc * basesrc, GstQuery * query)
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gst_gl_base_src_find_gl_context_unlocked (GstGLBaseSrc * src)
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{
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GstGLBaseSrc *src = GST_GL_BASE_SRC (basesrc);
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GstGLBaseSrcClass *klass = GST_GL_BASE_SRC_GET_CLASS (src);
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GstBufferPool *pool = NULL;
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GstStructure *config;
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GstCaps *caps;
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guint min, max, size;
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gboolean update_pool;
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GError *error = NULL;
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gboolean new_context = FALSE;
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GST_DEBUG_OBJECT (src, "attempting to find an OpenGL context, existing %"
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GST_PTR_FORMAT, src->context);
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if (!src->context)
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new_context = TRUE;
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@ -487,6 +535,7 @@ gst_gl_base_src_decide_allocation (GstBaseSrc * basesrc, GstQuery * query)
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} while (!gst_gl_display_add_context (src->display, src->context));
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GST_OBJECT_UNLOCK (src->display);
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}
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GST_INFO_OBJECT (src, "found OpenGL context %" GST_PTR_FORMAT, src->context);
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if (new_context || !src->priv->gl_started) {
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if (src->priv->gl_started)
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@ -504,47 +553,6 @@ gst_gl_base_src_decide_allocation (GstBaseSrc * basesrc, GstQuery * query)
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goto error;
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}
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gst_query_parse_allocation (query, &caps, NULL);
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if (gst_query_get_n_allocation_pools (query) > 0) {
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gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
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update_pool = TRUE;
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} else {
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GstVideoInfo vinfo;
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gst_video_info_init (&vinfo);
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gst_video_info_from_caps (&vinfo, caps);
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size = vinfo.size;
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min = max = 0;
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update_pool = FALSE;
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}
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if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) {
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/* can't use this pool */
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if (pool)
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gst_object_unref (pool);
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pool = gst_gl_buffer_pool_new (src->context);
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}
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, min, max);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
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gst_buffer_pool_config_add_option (config,
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GST_BUFFER_POOL_OPTION_GL_SYNC_META);
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gst_buffer_pool_config_add_option (config,
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GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
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gst_buffer_pool_set_config (pool, config);
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if (update_pool)
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gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
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else
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gst_query_add_allocation_pool (query, pool, size, min, max);
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gst_object_unref (pool);
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return TRUE;
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unsupported_gl_api:
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@ -583,6 +591,70 @@ error:
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}
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}
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static gboolean
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gst_gl_base_src_decide_allocation (GstBaseSrc * basesrc, GstQuery * query)
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{
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GstGLBaseSrc *src = GST_GL_BASE_SRC (basesrc);
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GstGLContext *context;
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GstBufferPool *pool = NULL;
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GstStructure *config;
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GstCaps *caps;
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guint min, max, size;
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gboolean update_pool;
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g_rec_mutex_lock (&src->priv->context_lock);
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if (!gst_gl_base_src_find_gl_context_unlocked (src)) {
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g_rec_mutex_unlock (&src->priv->context_lock);
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return FALSE;
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}
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context = gst_object_ref (src->context);
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g_rec_mutex_unlock (&src->priv->context_lock);
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gst_query_parse_allocation (query, &caps, NULL);
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if (gst_query_get_n_allocation_pools (query) > 0) {
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gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
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update_pool = TRUE;
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} else {
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GstVideoInfo vinfo;
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gst_video_info_init (&vinfo);
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gst_video_info_from_caps (&vinfo, caps);
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size = vinfo.size;
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min = max = 0;
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update_pool = FALSE;
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}
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if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) {
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/* can't use this pool */
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if (pool)
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gst_object_unref (pool);
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pool = gst_gl_buffer_pool_new (context);
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}
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, min, max);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
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gst_buffer_pool_config_add_option (config,
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GST_BUFFER_POOL_OPTION_GL_SYNC_META);
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gst_buffer_pool_config_add_option (config,
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GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
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gst_buffer_pool_set_config (pool, config);
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if (update_pool)
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gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
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else
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gst_query_add_allocation_pool (query, pool, size, min, max);
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gst_object_unref (pool);
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gst_object_unref (context);
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return TRUE;
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}
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static GstStateChangeReturn
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gst_gl_base_src_change_state (GstElement * element, GstStateChange transition)
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{
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@ -599,15 +671,10 @@ gst_gl_base_src_change_state (GstElement * element, GstStateChange transition)
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switch (transition) {
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case GST_STATE_CHANGE_READY_TO_NULL:
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if (src->priv->other_context) {
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gst_object_unref (src->priv->other_context);
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src->priv->other_context = NULL;
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}
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if (src->display) {
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gst_object_unref (src->display);
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src->display = NULL;
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}
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g_rec_mutex_lock (&src->priv->context_lock);
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gst_clear_object (&src->priv->other_context);
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gst_clear_object (&src->display);
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g_rec_mutex_unlock (&src->priv->context_lock);
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break;
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default:
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break;
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