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kayasrc: support opening multiple cameras from one frame grabber

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Previously only one camera per physical capture card could be opened.
Multiple cameras per card can now be captured, however they must both
still be in the same process. There is no IPC implemented yet.
This commit is contained in:
Joshua M. Doe
2019-10-02 09:39:05 -04:00
parent 75aaec26b6
commit 5ef38d0833
2 changed files with 125 additions and 53 deletions
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21
sys/kaya/gstkayasrc.h
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@@ -24,6 +24,8 @@
#include <KYFGLib.h>
#define KAYA_SRC_MAX_FG_HANDLES 16
G_BEGIN_DECLS
#define GST_TYPE_KAYA_SRC (gst_kayasrc_get_type())
@@ -31,17 +33,20 @@ G_BEGIN_DECLS
#define GST_KAYA_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_KAYA_SRC,GstKayaSrcClass))
#define GST_IS_KAYA_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_KAYA_SRC))
#define GST_IS_KAYA_SRC_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_KAYA_SRC))
#define GST_KAYA_SRC_GET_CLASS(klass) \
(G_TYPE_INSTANCE_GET_CLASS ((klass), GST_TYPE_KAYA_SRC, GstKayaSrcClass))
typedef struct _GstKayaSrc GstKayaSrc;
typedef struct _GstKayaSrcClass GstKayaSrcClass;
typedef struct _GstKayaSrcFramegrabber GstKayaSrcFramegrabber;
struct _GstKayaSrc
{
GstPushSrc base_kayasrc;
/* handles */
FGHANDLE fg_handle;
GstKayaSrcFramegrabber *fg_data;
CAMHANDLE cam_handle;
STREAM_HANDLE stream_handle;
STREAM_BUFFER_HANDLE *buffer_handles;
@@ -58,6 +63,7 @@ struct _GstKayaSrc
gchar *execute_command;
gboolean acquisition_started;
guint64 frame_count;
gboolean stop_requested;
gint64 dropped_frames;
@@ -68,9 +74,20 @@ struct _GstKayaSrc
GstClockTime kaya_base;
};
struct _GstKayaSrcFramegrabber
{
FGHANDLE fg_handle;
guint32 ref_count;
CAMHANDLE cam_handles[4];
int num_cams;
GMutex fg_mutex;
};
struct _GstKayaSrcClass
{
GstPushSrcClass base_kayasrc_class;
GstKayaSrcFramegrabber fg_data[KAYA_SRC_MAX_FG_HANDLES];
};
GType gst_kayasrc_get_type (void);