1 files changed, 95 insertions, 0 deletions
diff --git a/include/pdp_image.h b/include/pdp_image.h
new file mode 100644
index 0000000..3dabfb1
--- /dev/null
+++ b/include/pdp_image.h
@@ -0,0 +1,95 @@
+/*
+ *   Pure Data Packet system implementation. Image packet interface
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program 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 General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+/*
+  This file contains methods for the image packets
+  pdp_packet_new_* methods are several image packet constructors
+
+  It also contains some pdp_type_ methods, for type checking
+  and conversion.
+
+*/
+
+#ifndef PDP_IMAGE_H
+#define PDP_IMAGE_H
+
+#include "pdp_symbol.h"
+#include "pdp_types.h"
+
+/* image subheader */   
+typedef struct _image
+{
+    /* standard images */
+    unsigned int encoding;    /* image encoding (data format) */
+    unsigned int width;       /* image width in pixels */
+    unsigned int height;      /* image height in pixels */
+    unsigned int depth;       /* number of colour planes if PDP_IMAGE_MCHP */
+    unsigned int chanmask;    /* channel bitmask to mask out inactive channels (0 == not used) */
+
+} t_image;
+
+
+/* image encodings */
+#define PDP_IMAGE_YV12   1  /* 24bbp: 16 bit Y plane followed by 16 bit 2x2 subsampled V and U planes.*/
+#define PDP_IMAGE_GREY   2  /* 16bbp: 16 bit Y plane */
+#define PDP_IMAGE_MCHP   4  /* generic 16bit multi channel planar (16 bit 3D tensor) */
+
+/* slice synchro information */
+#define PDP_IMAGE_SLICE_FIRST (1<<0)
+#define PDP_IMAGE_SLICE_LAST  (1<<1)
+#define PDP_IMAGE_SLICE_BODY  (1<<2)
+
+
+
+/* all symbols are C style */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+
+
+/* validate and compat check */
+bool pdp_packet_image_isvalid(int packet);
+bool pdp_packet_image_compat(int packet0, int packet1);
+
+/* short cuts to create specific packets */
+int pdp_packet_new_image(u32 encoding, u32 width, u32 height);
+int pdp_packet_new_image_YCrCb(u32 width, u32 height);
+int pdp_packet_new_image_grey(u32 width, u32 height);
+int pdp_packet_new_image_mchp(u32 width, u32 height, u32 depth);
+
+#define pdp_packet_new_image_multi pdp_packet_new_image_mchp
+
+/* get info */
+t_pdp_symbol *pdp_packet_image_get_description(int packet);
+t_image *pdp_packet_image_info(int packet);
+
+/* set props */
+void pdp_packet_image_set_chanmask(int packet, unsigned int chanmask);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif