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-rw-r--r--sys/glsink/gstgldownload.c294
1 files changed, 294 insertions, 0 deletions
diff --git a/sys/glsink/gstgldownload.c b/sys/glsink/gstgldownload.c
new file mode 100644
index 00000000..55f9e759
--- /dev/null
+++ b/sys/glsink/gstgldownload.c
@@ -0,0 +1,294 @@
+/*
+ * GStreamer
+ * Copyright (C) 2007 David Schleef <ds@schleef.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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gstglbuffer.h>
+
+#define GST_CAT_DEFAULT gst_gl_download_debug
+GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
+
+#define GST_TYPE_GL_DOWNLOAD (gst_gl_download_get_type())
+#define GST_GL_DOWNLOAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_DOWNLOAD,GstGLDownload))
+#define GST_IS_GL_DOWNLOAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_DOWNLOAD))
+#define GST_GL_DOWNLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_GL_DOWNLOAD,GstGLDownloadClass))
+#define GST_IS_GL_DOWNLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_GL_DOWNLOAD))
+#define GST_GL_DOWNLOAD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_GL_DOWNLOAD,GstGLDownloadClass))
+typedef struct _GstGLDownload GstGLDownload;
+typedef struct _GstGLDownloadClass GstGLDownloadClass;
+
+typedef void (*GstGLDownloadProcessFunc) (GstGLDownload *, guint8 *, guint);
+
+struct _GstGLDownload
+{
+ GstElement element;
+
+ GstPad *srcpad;
+ GstPad *sinkpad;
+
+ /* < private > */
+
+ GstGLDisplay *display;
+ GstVideoFormat format;
+ int width;
+ int height;
+};
+
+struct _GstGLDownloadClass
+{
+ GstElementClass element_class;
+};
+
+static const GstElementDetails element_details = GST_ELEMENT_DETAILS ("FIXME",
+ "Filter/Effect",
+ "FIXME example filter",
+ "FIXME <fixme@fixme.com>");
+
+#define GST_GL_VIDEO_CAPS "video/x-raw-gl"
+
+static GstStaticPadTemplate gst_gl_download_src_pad_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx)
+ );
+
+static GstStaticPadTemplate gst_gl_download_sink_pad_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_GL_VIDEO_CAPS)
+ );
+
+enum
+{
+ PROP_0
+};
+
+#define DEBUG_INIT(bla) \
+ GST_DEBUG_CATEGORY_INIT (gst_gl_download_debug, "gldownload", 0, "gldownload element");
+
+GST_BOILERPLATE_FULL (GstGLDownload, gst_gl_download, GstElement,
+ GST_TYPE_ELEMENT, DEBUG_INIT);
+
+static void gst_gl_download_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_gl_download_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static GstFlowReturn gst_gl_download_chain (GstPad * pad, GstBuffer * buf);
+static void gst_gl_download_reset (GstGLDownload * download);
+static GstStateChangeReturn
+gst_gl_download_change_state (GstElement * element, GstStateChange transition);
+static gboolean gst_gl_download_sink_setcaps (GstPad * pad, GstCaps * caps);
+
+
+static void
+gst_gl_download_base_init (gpointer klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_set_details (element_class, &element_details);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_gl_download_src_pad_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_gl_download_sink_pad_template));
+}
+
+static void
+gst_gl_download_class_init (GstGLDownloadClass * klass)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gobject_class->set_property = gst_gl_download_set_property;
+ gobject_class->get_property = gst_gl_download_get_property;
+
+ GST_ELEMENT_CLASS (klass)->change_state = gst_gl_download_change_state;
+}
+
+static void
+gst_gl_download_init (GstGLDownload * download, GstGLDownloadClass * klass)
+{
+ gst_element_create_all_pads (GST_ELEMENT (download));
+
+ download->sinkpad =
+ gst_element_get_static_pad (GST_ELEMENT (download), "sink");
+ download->srcpad = gst_element_get_static_pad (GST_ELEMENT (download), "src");
+
+ gst_pad_set_setcaps_function (download->sinkpad,
+ gst_gl_download_sink_setcaps);
+ gst_pad_set_chain_function (download->sinkpad, gst_gl_download_chain);
+
+ gst_gl_download_reset (download);
+}
+
+static void
+gst_gl_download_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ //GstGLDownload *download = GST_GL_DOWNLOAD (object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_gl_download_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ //GstGLDownload *download = GST_GL_DOWNLOAD (object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_gl_download_reset (GstGLDownload * download)
+{
+ if (download->display) {
+ g_object_unref (download->display);
+ download->display = NULL;
+ }
+ download->format = GST_VIDEO_FORMAT_BGRx;
+}
+
+static gboolean
+gst_gl_download_start (GstGLDownload * download)
+{
+ gboolean ret;
+
+ download->format = GST_VIDEO_FORMAT_BGRx;
+ download->display = gst_gl_display_new ();
+ ret = gst_gl_display_connect (download->display, NULL);
+
+ return ret;
+}
+
+static gboolean
+gst_gl_download_stop (GstGLDownload * download)
+{
+ gst_gl_download_reset (download);
+
+ return TRUE;
+}
+
+static gboolean
+gst_gl_download_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstGLDownload *download;
+ gboolean ret;
+ GstStructure *structure;
+ GstCaps *srccaps;
+
+ download = GST_GL_DOWNLOAD (gst_pad_get_parent (pad));
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ ret = gst_structure_get_int (structure, "width", &download->width);
+ ret &= gst_structure_get_int (structure, "height", &download->height);
+ if (!ret)
+ return FALSE;
+
+ srccaps = gst_video_format_new_caps (download->format,
+ download->width, download->height, 30, 1, 1, 1);
+ ret = gst_pad_set_caps (download->srcpad, srccaps);
+ gst_caps_unref (srccaps);
+
+ return ret;
+}
+
+static GstFlowReturn
+gst_gl_download_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstGLDownload *download;
+ GstGLBuffer *inbuf = GST_GL_BUFFER (buf);
+ GstBuffer *outbuf;
+
+ GST_ERROR ("got here");
+ download = GST_GL_DOWNLOAD (gst_pad_get_parent (pad));
+
+ outbuf = gst_buffer_new_and_alloc (inbuf->width * inbuf->height * 4);
+
+ gst_buffer_copy_metadata (GST_BUFFER (outbuf), buf,
+ GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS);
+ gst_buffer_set_caps (GST_BUFFER (outbuf), GST_PAD_CAPS (download->srcpad));
+
+ GST_ERROR ("downloading %p size %d",
+ GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
+ gst_gl_buffer_download (inbuf, GST_BUFFER_DATA (outbuf));
+
+ gst_pad_push (download->srcpad, GST_BUFFER (outbuf));
+
+ gst_object_unref (download);
+ return GST_FLOW_OK;
+}
+
+static GstStateChangeReturn
+gst_gl_download_change_state (GstElement * element, GstStateChange transition)
+{
+ GstGLDownload *download;
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+
+ GST_DEBUG ("change state");
+
+ download = GST_GL_DOWNLOAD (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ gst_gl_download_start (download);
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ if (ret == GST_STATE_CHANGE_FAILURE)
+ return ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_gl_download_stop (download);
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
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