1 files changed, 216 insertions, 0 deletions
diff --git a/gem2pdp/pdp-light.h b/gem2pdp/pdp-light.h
new file mode 100644
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--- /dev/null
+++ b/gem2pdp/pdp-light.h
@@ -0,0 +1,216 @@
+/*
+ *   Pure Data Packet header file.
+ *   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.
+ *
+ */
+
+
+
+#ifndef PDP_H
+#define PDP_H
+
+/* header and subheader size in bytes */
+#define PDP_HEADER_SIZE 256
+
+#include <string.h>
+#include <stdlib.h>
+
+/* some typedefs */
+#include "pdp_types.h"
+
+/* PDP_IMAGE COMPONENTS */
+
+/* header and methods for the built in image packet type */
+#include "pdp_image.h"
+
+/* low level image processing and high level dispatching routines */
+#include "pdp_imageproc.h"
+
+/* low level image conversion routines */
+#include "pdp_llconv.h"
+
+/* low level image resampling routines */
+#include "pdp_resample.h"
+
+
+
+/* PDP_BITMAP COMPONENTS */
+
+/* header and methods for the built in bitmap packet type */
+#include "pdp_bitmap.h"
+
+
+/* PDP_MATRIX COMPONENTS */
+#include "pdp_matrix.h"
+
+
+// packet class
+#include "pdp_list.h"
+
+typedef struct _pdp_list* (*t_pdp_attribute_method)(int, struct _pdp_list*);
+
+/* packet class attribute (method) */
+typedef struct _pdp_attribute
+{
+    t_pdp_symbol *name;
+    t_pdp_attribute_method method;
+
+    /* problem: do we support argument type checking ??
+       this seems to be better solved in a "spec doc" or a central place
+       where "reserved" methods can be defined. */
+
+    /* if null this means the input or output list can be anything */
+    struct _pdp_list *in_spec;      // template for the input list (including default arguments)
+    struct _pdp_list *out_spec;     // template for the output list
+} t_pdp_attribute;
+
+
+/* packet class header */
+typedef struct _pdp_class
+{
+    /* packet manips: non-pure data packets (using external resources) must define these */
+    t_pdp_packet_method1 reinit;     /* reuse method for pdp_packet_new() */
+    t_pdp_packet_method2 clone;      /* init from template for pdp_packet_clone_rw() */
+    t_pdp_packet_method2 copy;       /* init & copy from template for pdp_packet_copy_rw() */
+    t_pdp_packet_method1 cleanup;    /* free packet's resources (to be used by the garbage collector) */
+
+    t_pdp_symbol *type;              /* type template for packet class */
+    struct _pdp_list *attributes;    /* list of attributes (packet methods) */
+}t_pdp_class;
+
+
+/* packet object header */
+struct _pdp
+{
+    /* meta info */
+    unsigned int type;             /* main datatype of this object */
+    t_pdp_symbol *desc;            /* high level type description (sort of a mime type) */
+    unsigned int size;             /* datasize including header */
+    unsigned int flags;            /* packet flags */
+
+    /* reference count */
+    unsigned int users;            /* nb users of this object, readonly if > 1 */
+    unsigned int *refloc;          /* location of reference to packet for passing packets */
+
+    /* class object */
+    t_pdp_class *pclass;            /* if zero, the packet is a pure packet (just data, no member functions) */
+
+    /* class */
+    //struct _pdp_class *class;    /* the packet class */
+
+    u32 pad[9];                    /* reserved to provide binary compatibility for future extensions */
+
+    union                          /* each packet type has a unique subheader */
+    {
+	t_raw    raw;              /* raw subheader (for extensions unkown to pdp core system) */
+	t_image  image;            /* (nonstandard internal) 16 bit signed planar bitmap image format */
+	t_bitmap bitmap;           /* (standard) bitmap image (fourcc coded) */
+	//t_ca     ca;             /* cellular automaton state data */
+	//t_ascii  ascii;          /* ascii packet */
+    } info;
+
+};
+
+
+/* pdp data packet type id */
+#define PDP_IMAGE                 1  /* 16bit signed planar scanline encoded image packet */
+//RESERVED: #define PDP_CA        2  /* 1bit toroidial shifted scanline encoded cellular automaton */
+//RESERVED: #define PDP_ASCII     3  /* ascii packet */
+//RESERVED: #define PDP_TEXTURE   4  /* opengl texture object */
+//RESERVED: #define PDP_3DCONTEXT 5  /* opengl render context */
+#define PDP_BITMAP                6  /* 8bit image packet (fourcc coded??) */
+//RESERVED: #define PDP_MATRIX    7  /* floating point/double matrix/vector packet (from gsl) */
+
+/* PACKET FLAGS */
+
+#define PDP_FLAG_DONOTCOPY (1<<0)   /* don't copy the packet on register_rw, instead return an invalid packet */
+
+
+/* PDP SYSTEM COMPONENTS */
+
+/* packet class and pool manager */
+#include "pdp_packet.h"
+
+/* processing queue manager */
+#include "pdp_queue.h"
+
+/* several communication helper methods (pd specific) */
+#include "pdp_comm.h"
+
+/* type handling subsystem */
+#include "pdp_type.h"
+
+/* dpd command stuff */
+#include "pdp_dpd_command.h"
+
+
+/* BACKWARDS COMPAT STUFF */
+#include "pdp_compat.h"
+
+
+
+
+#endif 
+
+/*
+
+   PDP CORE API OVERVIEW
+
+   pdp_packet_* : packet methods, first argument is packet id
+
+      new:                construct a raw packet (depreciated)
+      new_*:              construct packet of specific type/subtype/...
+      mark_unused:        release
+      mark_passing:       conditional release (release on first copy ro/rw)
+      copy_ro:            readonly (shared) copy
+      copy_rw:            private copy
+      clone_rw:           private copy (copies only meta data, not the content)
+      header:             get the raw header (t_pdp *)
+      data:               get the raw data (void *)
+      pass_if_valid:      send a packet to pd outlet, if it is valid
+      replace_if_valid    delete packet and replace with new one, if new is valid
+      copy_ro_or_drop:    copy readonly, or don't copy if dest slot is full + send drop notify
+      copy_rw_or_drop:    same, but private copy
+      get_description:    retrieve type info
+      convert_ro:         same as copy_ro, but with an automatic conversion matching a type template
+      convert_rw:         same as convert_ro, but producing a private copy
+
+   pdp_pool_* : packet pool methods
+
+      collect_garbage:    manually free all unused resources in packet pool
+
+   pdp_queue_* : processing queue methods
+
+      add:                add a process method + callback
+      finish:             wait until a specific task is done
+      wait:               wait until processing queue is done
+
+   pdp_control_* : central pdp control hub methods
+
+      notify_drop:        notify that a packet has been dropped
+
+   pdp_type_* : packet type mediator methods
+
+      description_match:   check if two type templates match
+      register_conversion: register a type conversion program
+
+
+
+   NOTE: it is advised to derive your module from the pdp base class defined in pdp_base.h
+         instead of communicating directly with the pdp core
+
+*/