gst_plugins_base/sys/v4l/gstv4lmjpegsink.h
branchRCL_3
changeset 8 7e817e7e631c
parent 0 0e761a78d257
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/sys/v4l/gstv4lmjpegsink.h	Wed Sep 01 12:16:41 2010 +0100
@@ -0,0 +1,97 @@
+/* GStreamer
+ *
+ * gstv4lmjpegsink.h: hardware MJPEG video sink element
+ *
+ * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_V4LMJPEGSINK_H__
+#define __GST_V4LMJPEGSINK_H__
+
+#include <gstv4lelement.h>
+#include <sys/time.h>
+#include <videodev_mjpeg.h>
+
+
+G_BEGIN_DECLS
+
+
+#define GST_TYPE_V4LMJPEGSINK \
+  (gst_v4lmjpegsink_get_type())
+#define GST_V4LMJPEGSINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSink))
+#define GST_V4LMJPEGSINK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSinkClass))
+#define GST_IS_V4LMJPEGSINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LMJPEGSINK))
+#define GST_IS_V4LMJPEGSINK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LMJPEGSINK))
+
+typedef struct _GstV4lMjpegSink GstV4lMjpegSink;
+typedef struct _GstV4lMjpegSinkClass GstV4lMjpegSinkClass;
+
+struct _GstV4lMjpegSink {
+  GstV4lElement v4lelement;
+
+  /* the sink pas */
+  GstPad *sinkpad;
+
+  /* frame properties for common players */
+  gint frames_displayed;
+  guint64 frame_time;
+
+  /* system clock object */
+  GstClock *clock;
+
+  /* buffer/capture info */
+  struct mjpeg_sync bsync;
+  struct mjpeg_requestbuffers breq;
+
+  /* thread to keep track of synced frames */
+  gint8 *isqueued_queued_frames; /* 1 = queued, 0 = unqueued, -1 = error */
+  GThread *thread_queued_frames;
+  GMutex *mutex_queued_frames;
+  GCond **cond_queued_frames;
+  gint current_frame;
+
+  /* width/height/norm of the jpeg stream */
+  gint width;
+  gint height;
+  gint norm;
+
+  /* cache values */
+  gint x_offset;
+  gint y_offset;
+
+  gint numbufs;
+  gint bufsize; /* in KB */
+};
+
+struct _GstV4lMjpegSinkClass {
+  GstV4lElementClass parent_class;
+
+  /* signals */
+  void (*frame_displayed) (GstElement *element);
+};
+
+GType gst_v4lmjpegsink_get_type(void);
+
+
+G_END_DECLS
+
+#endif /* __GST_SDLVIDEOSINK_H__ */