sys/v4l2/: add norm, channel and frequency properties.

Original commit message from CVS:
2004-01-12  Benjamin Otte  <in7y118@public.uni-hamburg.de>

* sys/v4l2/gstv4l2element.c: (gst_v4l2element_class_init),
(gst_v4l2element_dispose), (gst_v4l2element_set_property),
(gst_v4l2element_get_property):
* sys/v4l2/v4l2_calls.c: (gst_v4l2_set_defaults), (gst_v4l2_open):
add norm, channel and frequency properties.
* sys/v4l2/gstv4l2tuner.c:
fixes for tuner interface changes
* sys/v4l2/gstv4l2element.h:
* sys/v4l2/gstv4l2src.c:
* sys/v4l2/gstv4l2src.h:
* sys/v4l2/v4l2src_calls.c:
* sys/v4l2/v4l2src_calls.h:
rework v4l2src to work with saa1734 cards and allow mmaped buffers.

1 files changed, 28 insertions, 17 deletions

diff --git a/sys/v4l2/gstv4l2src.h b/sys/v4l2/gstv4l2src.h
index bae60900..ca528d1e 100644
--- a/sys/v4l2/gstv4l2src.h
+++ b/sys/v4l2/gstv4l2src.h
@@ -22,6 +22,10 @@
 
 #include <gstv4l2element.h>
 
+GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug);
+
+#define GST_V4L2_MAX_BUFFERS 16
+#define GST_V4L2_MIN_BUFFERS 2
 
 #define GST_TYPE_V4L2SRC \
 		(gst_v4l2src_get_type())
@@ -34,9 +38,26 @@
 #define GST_IS_V4L2SRC_CLASS(obj) \
 		(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2SRC))
 
+typedef struct _GstV4l2BufferPool	GstV4l2BufferPool;
+typedef struct _GstV4l2Buffer		GstV4l2Buffer;
+typedef	struct _GstV4l2Src		GstV4l2Src;
+typedef	struct _GstV4l2SrcClass		GstV4l2SrcClass;
+
+/* global info */
+struct _GstV4l2BufferPool {
+  GstAtomicInt		refcount; /* number of users: 1 for every buffer, 1 for element */
+  gint			video_fd;
+  guint			buffer_count;
+  GstV4l2Buffer *	buffers;
+};
 
-typedef	struct _GstV4l2Src	GstV4l2Src;
-typedef	struct _GstV4l2SrcClass	GstV4l2SrcClass;
+struct _GstV4l2Buffer {
+  struct v4l2_buffer	buffer;
+  guint8 *		start;
+  guint			length;
+  GstAtomicInt		refcount; /* add 1 if in use by element, add 1 if in use by GstBuffer */
+  GstV4l2BufferPool *	pool;
+};
 
 struct _GstV4l2Src {
 	GstV4l2Element v4l2element;
@@ -45,28 +66,21 @@ struct _GstV4l2Src {
 	GstPad *srcpad;
 
 	/* internal lists */
-	GList /*v4l2_fmtdesc*/ *formats, *format_list; /* list of available capture formats */
+	GSList *formats; /* list of available capture formats */
+
+	/* buffers */
+	GstV4l2BufferPool *pool;
 
-	/* buffer properties */
-	struct v4l2_buffer bufsettings;
 	struct v4l2_requestbuffers breq;
 	struct v4l2_format format;
 
-	/* num of queued frames and some GThread stuff
-	 * to wait if there's not enough */
-	gint8 *frame_queue_state;
-	GMutex *mutex_queue_state;
-	GCond *cond_queue_state;
-	gint num_queued;
-	gint queue_frame;
-
 	/* True if we want to stop */
 	gboolean quit;
 
 	/* A/V sync... frame counter and internal cache */
 	gulong handled;
-	gint last_frame;
 	gint need_writes;
+	GstBuffer *cached_buffer;
 	gulong last_seq;
 
 	/* clock */
@@ -75,9 +89,6 @@ struct _GstV4l2Src {
 	/* time to substract from clock time to get back to timestamp */
 	GstClockTime substract_time;
 
-	/* how often are we going to use each frame? */
-	gint *use_num_times;
-
 	/* how are we going to push buffers? */
 	gboolean use_fixed_fps;
 };