--- /dev/null
+/**
+ * Summary: udi_gfx.h
+ * Contains the graphics metalanguage interface details
+ *
+ * Author:
+ * Marcel Sondaar
+ *
+ * License:
+ * <Public Domain>
+ *
+ * Source:
+ * https://www.d-rift.nl/combuster/mos3/?p=viewsource&file=/include/common/udi_gfx.h
+ */
+
+// note that the specification, and thus, the contents of this file is not fixed.
+
+#ifndef __UDI_GFX_H__
+#define __UDI_GFX_H__
+
+#include <udi.h>
+
+#ifndef UDI_GFX_VERSION
+#error "UDI_GFX_VERSION not defined."
+#elif UDI_GFX_VERSION != 0x101
+#error "UDI_GFX_VERSION not supported."
+#endif
+
+/**
+ * Enumeration: UDI_GFX_PROP
+ * Lists the various UDI properties
+ */
+
+// General state properties
+/* Constant: UDI_GFX_PROP_ENABLE
+ *
+ * Valid values:
+ * 0 - disabled
+ * 1 - enabled
+ *
+ * Ranges:
+ * Hardwired 1, or 0-1
+ *
+ * The connector or engine is enabled (nonzero) or disabled (zero). A disabled
+ * engine forwards all data from the previous stage unmodified. A disabled
+ * connector does not send any data over the connector. Drivers may power down
+ * the physical counterparts of disabled components to preserve power, and users
+ * should expect delays when enabling connectors or components representing
+ * framebuffers. Disabling is however not recommended for sprite layers, which
+ * may repeatedly be enabled and disabled. A disabled component can still have
+ * its state changed, and the driver must complete all commands and other state
+ * changes as expected, regardless of disabled or power state. The valid ranges
+ * reported for this property may be 1 (always enabled) or 0-1 (either enabled
+ * or disabled).
+ */
+#define UDI_GFX_PROP_ENABLE 0
+/* Constant: UDI_GFX_PROP_INPUT
+ *
+ * Valid values:
+ * Any valid engine ID, provided no dependency cycles are created, or -1
+ *
+ * Ranges:
+ * Any non-empty set of valid values. Often hardwired.
+ *
+ * Points to the engine that is processed before this unit. In the case of a
+ * connector, it points to the last engine in a pipeline, and each engine points
+ * to the next engine in the sequence. A value of -1 indicates a source that
+ * only yields black pixels. Implementations must not allow cyclic structures.
+ * Changing this value may reallocate resources, and engines that are no longer
+ * referenced may lose their data (but not their state) when it is not part of
+ * any pipeline. If preservation is required, the ENABLE state should be used
+ * instead. Valid ranges includes one or more from the list of engines and -1
+ * combined. In most cases, this property can not be modified.
+ */
+#define UDI_GFX_PROP_INPUT 1
+/* Constant: UDI_GFX_PROP_WIDTH
+ *
+ * Valid values:
+ * Any non-zero positive number.
+ *
+ * Ranges:
+ * Contains at least one valid value. Often only multiples of UNIT_WIDTH
+ * or a power of two are allowed. May be hardwired.
+ *
+ * Contains the amount of pixels in the horizontal direction. For connectors,
+ * this is the amount of data pixels rendered horizontally. For engines, this
+ * is the width in pixels of the image. Pixels requested from an engine outside
+ * the range (0..width-1) are defined according to the <UDI_GFX_PROP_CLIP>
+ * property. In some cases, hardware may support only fixed combinations of
+ * width and height. In such cases, changing the width will also change the
+ * height to a corresponding valid number. Valid ranges include any values
+ * strictly above zero. For connectors, expect large continuous ranges, large
+ * ranges with a certain modulus, a limited number of fixed values, or a
+ * constant value.
+ */
+#define UDI_GFX_PROP_WIDTH 2
+/* Constant: UDI_GFX_PROP_HEIGHT
+ *
+ * Valid values:
+ * Any non-zero positive number.
+ *
+ * Ranges:
+ * Contains at least one valid value. Often only multiples of UNIT_HEIGHT
+ * or a power of two are allowed. May be hardwired.
+ *
+ * Contains the amount of pixels in the vertical direction. Functions similar
+ * to the width property, but changing it will not alter the width property,
+ * and it's range at any time contains the valid range for the currently
+ * selected width.
+ */
+#define UDI_GFX_PROP_HEIGHT 3
+
+/* Constant: UDI_GFX_PROP_CUSTOM
+ * The first property index of the driver's custom range. These are not assigned
+ * directly assigned by the UDI specification, but may be specified in the
+ * operator tree.
+ */
+#define UDI_GFX_PROP_CUSTOM 1024
+
+// engine properties
+
+/* Constant: UDI_GFX_PROP_CLIP
+ *
+ * Valid values:
+ * 0 - points outside width x height are passed from next stage
+ * 1 - the engine's contents is tiled with size width x height
+ * 2 - points outside the width overflow into the y coordinate
+ * 3 - points outside the height overflow into the x coordinate
+ *
+ * Ranges:
+ * Hardwired zero for connectors. Any non-empty subset for engines, usually
+ * hardwired.
+ *
+ * For engines, contains the behaviour for pixels requested outside the width
+ * and height of the engine. Can be either 0 (pass from next stage), 1 (the
+ * coordinates are wrapped modulus the height and width), 2 (the coordinates
+ * overflow onto the next scanline horizontally, and wrap vertically), 3 (the
+ * coordinates overflow onto the next column vertically, and wrap horizontally).
+ * Valid ranges contain one or more of these options. For overlays and sprites,
+ * a value 0 is common. For framebuffers, 2 is the most common value. For
+ * connectors, this property is always 0 since they do not store pixel data
+ */
+#define UDI_GFX_PROP_CLIP 4
+
+/* Constant: UDI_GFX_PROP_UNIT_WIDTH
+ *
+ * Valid values:
+ * Any non-zero positive value
+ *
+ * Ranges:
+ * Any non-empty set of valid values. May be hardwired to 1 for
+ * framebuffers, or a range of small values for hardware scaling, or any
+ * larger hardwired number or set for tiling engines.
+ *
+ * Tiles are used to indicate that the hardware groups sets of pixels and have
+ * each group share certain properties, i.e. color or tile index, or share the
+ * same chroma subsample with only a different intensity. If the engine has no
+ * such grouping, or shares all properties over the entire contents, the value
+ * of this property should be 1. Some tile examples include rescaling, where a
+ * tile width of 2 indicates a pixel doubling in X direction, or in text mode
+ * where a tile width of 8 or 9 corresponds with the width of common bitmap
+ * fonts
+ */
+#define UDI_GFX_PROP_UNIT_WIDTH 5
+
+/* Constant: UDI_GFX_PROP_UNIT_HEIGHT
+ *
+ * Valid values:
+ * Any non-zero positive value
+ *
+ * Ranges:
+ * Any non-empty set of valid values. May be hardwired to 1 for
+ * framebuffers, or a range of small values for hardware scaling, or any
+ * larger hardwired number or set for tiling engines.
+ *
+ * See <UDI_GFX_PROP_UNIT_WIDTH>, but for the Y direction. Common values are
+ * 1-2 for framebuffers (doublescanning on or off), identical to the tile
+ * width, or mostly independent.
+ */
+#define UDI_GFX_PROP_UNIT_HEIGHT 6
+
+#define UDI_GFX_PROP_TRANSLATEX 7
+#define UDI_GFX_PROP_TRANSLATEY 8
+#define UDI_GFX_PROP_SOURCE_WIDTH 12
+#define UDI_GFX_PROP_SOURCE_HEIGHT 13
+#define UDI_GFX_PROP_GL_VERSION 14
+#define UDI_GFX_PROP_GLES_VERSION 15
+#define UDI_GFX_PROP_STATE_BLOCK 16
+/**
+ * Each engine consists of 1 or more operators
+ */
+#define UDI_GFX_PROP_OPERATOR_INDEX 17 //!< Index of operator to inspect/manipulate
+#define UDI_GFX_PROP_OPERATOR_OPCODE 18 //!< Operation performed by operator
+#define UDI_GFX_PROP_OPERATOR_ARG_1 19 //!< argument 1
+#define UDI_GFX_PROP_OPERATOR_ARG_2 20 //!< argument 2
+#define UDI_GFX_PROP_OPERATOR_ARG_3 21 //!< argument 3
+#define UDI_GFX_PROP_COLOR_BITS 22
+#define UDI_GFX_PROP_GL_TARGET 23
+#define UDI_GFX_PROP_INPUTX 25
+#define UDI_GFX_PROP_INPUTY 26
+
+// properties for removal:
+#define UDI_GFX_PROP_STORE_COUNT 24 // not generic
+#define UDI_GFX_PROP_STORE_WIDTH 9 // not generic
+#define UDI_GFX_PROP_STORE_HEIGHT 10 // not generic
+#define UDI_GFX_PROP_STORE_BITS 11 // not generic
+#define UDI_GFX_PROP_PALETTE 1024 // optional, can be derived from the operator tree
+#define UDI_GFX_PROP_BUFFER 1025 // optional, can be derived from the operator tree
+#define UDI_GFX_PROP_TILESHEET 1026 // optional, can be derived from the operator tree
+
+// connector properties
+#define UDI_GFX_PROP_SIGNAL 23
+#define UDI_GFX_PROP_CONNECTOR_TYPE 24
+#define UDI_GFX_PROP_VGA_H_FRONT_PORCH 25
+#define UDI_GFX_PROP_VGA_H_BACK_PORCH 26
+#define UDI_GFX_PROP_VGA_H_SYNC 27
+#define UDI_GFX_PROP_VGA_V_FRONT_PORCH 28
+#define UDI_GFX_PROP_VGA_V_BACK_PORCH 29
+#define UDI_GFX_PROP_VGA_V_SYNC 30
+#define UDI_GFX_PROP_DOT_CLOCK 31
+#define UDI_GFX_PROP_VGA_H_SYNC_POL 32
+#define UDI_GFX_PROP_VGA_V_SYNC_POL 33
+
+/**
+ * Enumeration: UDI_GFX_SIGNAL
+ * Lists the various signal types
+ */
+#define UDI_GFX_SIGNAL_HIDDEN 0
+#define UDI_GFX_SIGNAL_INTEGRATED 0
+#define UDI_GFX_SIGNAL_RGBHV 1
+#define UDI_GFX_SIGNAL_RGBS 2
+#define UDI_GFX_SIGNAL_RGSB 3
+#define UDI_GFX_SIGNAL_YPBPR 4
+#define UDI_GFX_SIGNAL_DVID 5
+#define UDI_GFX_SIGNAL_YUV 6
+#define UDI_GFX_SIGNAL_YIQ 7
+#define UDI_GFX_SIGNAL_Y_UV 8
+#define UDI_GFX_SIGNAL_Y_IQ 9
+#define UDI_GFX_SIGNAL_HDMI 10
+#define UDI_GFX_SIGNAL_TEXT 11
+#define UDI_GFX_SIGNAL_CUSTOM 12
+
+/**
+ * Enumeration: UDI_GFX_CONNECTOR
+ * Lists the various external connectors
+ */
+#define UDI_GFX_CONNECTOR_HIDDEN 0
+#define UDI_GFX_CONNECTOR_VGA 1
+#define UDI_GFX_CONNECTOR_DVI 2
+#define UDI_GFX_CONNECTOR_SVIDEO 3
+#define UDI_GFX_CONNECTOR_COMPONENT 4
+#define UDI_GFX_CONNECTOR_HDMI 5
+#define UDI_GFX_CONNECTOR_RF 6
+#define UDI_GFX_CONNECTOR_SCART 7
+#define UDI_GFX_CONNECTOR_COMPOSITE 8
+
+/**
+ * Enumeration: UDI_GFX_OPERATOR
+ * Lists the display output operator
+ *
+ * a1/a2/a3 represents taking the output of a previous operation
+ * v1/v2/v3 represents the literal value of that argument
+ */
+#define UDI_GFX_OPERATOR_RGB 0 // output = (color) red(a1) + green(a2) + blue(a3) (each component is UDI_GFX_PROP_COLOR_BITS
+#define UDI_GFX_OPERATOR_YUV 1 // output = (color) Y(a1) + U(a2) + V(a3)
+#define UDI_GFX_OPERATOR_YIQ 2 // output = (color) Y(a1) + I(a2) + Q(a3)
+#define UDI_GFX_OPERATOR_I 3 // output = (color) intensity(a1)
+#define UDI_GFX_OPERATOR_ALPHA 4 // output = (color) a1 + alpha(a2)
+#define UDI_GFX_OPERATOR_ADD 5 // output = a1 + a2 + v3
+#define UDI_GFX_OPERATOR_SUB 6 // output = a1 - a2 - v3
+#define UDI_GFX_OPERATOR_MUL 7 // output = a1 * a2
+#define UDI_GFX_OPERATOR_DIV 8 // output = a1 / a2
+#define UDI_GFX_OPERATOR_MAD 9 // output = a1 * a2 + a3
+#define UDI_GFX_OPERATOR_FRC 10 // output = (a1 * a2) / a3
+#define UDI_GFX_OPERATOR_SHR 11 // output = a1 >> (a2 + v3)
+#define UDI_GFX_OPERATOR_SHL 12 // output = a1 << (a2 + v3)
+#define UDI_GFX_OPERATOR_ROR 13 // output = a1 >> a2 (over a3 bits)
+#define UDI_GFX_OPERATOR_ROL 14 // output = a1 << a2 (over a3 bits)
+#define UDI_GFX_OPERATOR_SAR 15 // output = a1 >> a2 (width is a3 bits, i.e. empties are filled with bit a3-1)
+#define UDI_GFX_OPERATOR_SAL 16 // output = a1 <<< (a2 + v3) (empties filled with bit 0)
+#define UDI_GFX_OPERATOR_AND 17 // output = a1 & a2
+#define UDI_GFX_OPERATOR_OR 18 // output = a1 | a2 | v3
+#define UDI_GFX_OPERATOR_NOT 19 // output = ~a1
+#define UDI_GFX_OPERATOR_XOR 20 // output = a1 ^ a2 ^ v3
+#define UDI_GFX_OPERATOR_NEG 21 // output = -a1
+#define UDI_GFX_OPERATOR_SEG 22 // output = (a1 >> v2) & (2**v3-1) (select v3 bits starting from bit v2)
+#define UDI_GFX_OPERATOR_RANGE 23 // output = (a1 > a2) ? a2 : ((a1 < a3) ? a3 : a1)
+#define UDI_GFX_OPERATOR_CONST 24 // output = v1
+#define UDI_GFX_OPERATOR_ATTR 25 // output = property[a1 + v2]
+#define UDI_GFX_OPERATOR_SWITCH 26 // output = output[(a1 % v3) + v2]
+#define UDI_GFX_OPERATOR_BUFFER 27 // output = buffer[a1][a2] (buffer is v3 bits per entry)
+#define UDI_GFX_OPERATOR_X 28 // output = output x pixel
+#define UDI_GFX_OPERATOR_Y 29 // output = output y pixel
+#define UDI_GFX_OPERATOR_TX 30 // output = horizontal tile index belonging to output pixel
+#define UDI_GFX_OPERATOR_TY 31 // output = vertical tile index belonging to output pixel
+#define UDI_GFX_OPERATOR_TXOFF 32 // output = horizontal offset from start of tile
+#define UDI_GFX_OPERATOR_TYOFF 33 // output = vertical offset from start of tile
+#define UDI_GFX_OPERATOR_INPUT 34 // output = input engine[x][y] component v1
+#define UDI_GFX_OPERATOR_DINPUT 35 // output = input engine[a1][a2] component v3
+
+
+
+// Constant: UDI_GFX_PROVIDER_OPS_NUM
+// the ops number used for the graphics driver
+#define UDI_GFX_PROVIDER_OPS_NUM 1
+
+// Constant: UDI_GFX_CLIENT_OPS_NUM
+// the ops number used for the graphics application
+#define UDI_GFX_CLIENT_OPS_NUM 2
+
+// Structure: udi_gfx_bind_cb_t
+// Contains the operations of a driver binding request
+typedef struct {
+ // Variable: gcb
+ // The main control block
+ udi_cb_t gcb;
+} udi_gfx_bind_cb_t;
+#define UDI_GFX_BIND_CB_NUM 1
+
+// Function: udi_block_bind_req
+// function pointer prototype for connecting to a block device
+//
+// in:
+// cb - A pointer to a <udi_block_bind_cb_t>
+//
+typedef void udi_gfx_bind_req_op_t (udi_gfx_bind_cb_t *cb );
+udi_gfx_bind_req_op_t udi_gfx_bind_req;
+
+// Function: udi_gfx_bind_ack
+// function pointer prototype for acknowledging a connection request
+//
+// in:
+// cb - A pointer to a <udi_gfx_bind_cb_t>
+// sockets - The number of addressable socket components
+// engines - The number of addressable engine components
+// status - The result of the bind operation
+//
+typedef void udi_gfx_bind_ack_op_t (udi_gfx_bind_cb_t *cb, udi_index_t sockets, udi_index_t engines, udi_status_t status );
+udi_gfx_bind_ack_op_t udi_gfx_bind_ack;
+
+// Function: udi_gfx_unbind_req
+// function pointer prototype for disconnecting a block device
+//
+// in:
+// cb - A pointer to a <udi_block_bind_cb_t>
+//
+typedef void udi_gfx_unbind_req_op_t (udi_gfx_bind_cb_t *cb );
+udi_gfx_unbind_req_op_t udi_gfx_unbind_req;
+
+// Function: udi_gfx_unbind_ack
+// function pointer prototype for connecting to a block device
+//
+// in:
+// cb - A pointer to a <udi_gfx_bind_cb_t>
+//
+typedef void udi_gfx_unbind_ack_op_t (udi_gfx_bind_cb_t *cb );
+udi_gfx_unbind_ack_op_t udi_gfx_unbind_ack;
+
+// Structure: udi_gfx_state_cb_t
+// Contains the operations of a read/write transaction
+typedef struct {
+ // Variable: gcb
+ // The main control block
+ udi_cb_t gcb;
+ udi_ubit32_t subsystem;
+ udi_ubit32_t attribute;
+} udi_gfx_state_cb_t;
+#define UDI_GFX_STATE_CB_NUM 2
+
+// Function: udi_gfx_set_engine_req
+// function pointer prototype for setting an engine state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_set_engine_req_op_t (udi_gfx_state_cb_t *cb, udi_ubit32_t value);
+udi_gfx_set_engine_req_op_t udi_gfx_set_engine_req;
+
+// Function: udi_gfx_set_connector_req
+// function pointer prototype for setting an connector state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_set_connector_req_op_t (udi_gfx_state_cb_t *cb, udi_ubit32_t value);
+udi_gfx_set_connector_req_op_t udi_gfx_set_connector_req;
+
+// Function: udi_gfx_set_engine_ack
+// function pointer prototype for setting an engine state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_set_engine_ack_op_t (udi_gfx_state_cb_t *cb );
+udi_gfx_set_engine_ack_op_t udi_gfx_set_engine_ack;
+
+// Function: udi_gfx_set_connector_ack
+// function pointer prototype for setting an engine state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_set_connector_ack_op_t (udi_gfx_state_cb_t *cb );
+udi_gfx_set_connector_ack_op_t udi_gfx_set_connector_ack;
+
+// Function: udi_gfx_get_engine_req
+// function pointer prototype for setting an engine state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_get_engine_req_op_t (udi_gfx_state_cb_t *cb );
+udi_gfx_get_engine_req_op_t udi_gfx_get_engine_req;
+
+// Function: udi_gfx_get_connector_req
+// function pointer prototype for setting an connector state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_get_connector_req_op_t (udi_gfx_state_cb_t *cb );
+udi_gfx_get_connector_req_op_t udi_gfx_get_connector_req;
+
+// Function: udi_gfx_get_engine_ack
+// function pointer prototype for setting an engine state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_get_engine_ack_op_t (udi_gfx_state_cb_t *cb, udi_ubit32_t value);
+udi_gfx_get_engine_ack_op_t udi_gfx_get_engine_ack;
+
+// Function: udi_gfx_get_connector_ack
+// function pointer prototype for setting an engine state
+//
+// in:
+// cb - A pointer to a <udi_gfx_state_cb_t>
+//
+typedef void udi_gfx_get_connector_ack_op_t (udi_gfx_state_cb_t *cb, udi_ubit32_t value);
+udi_gfx_get_connector_ack_op_t udi_gfx_get_connector_ack;
+
+
+// Structure: udi_gfx_range_cb_t
+// Contains the operations of a range request transaction
+typedef struct {
+ // Variable: gcb
+ // The main control block
+ udi_cb_t gcb;
+ udi_ubit32_t subsystem;
+ udi_ubit32_t attribute;
+ udi_buf_t * rangedata;
+} udi_gfx_range_cb_t;
+#define UDI_GFX_RANGE_CB_NUM 3
+
+// Function: udi_gfx_range_engine_req
+// function pointer prototype for getting an engine property range
+//
+// in:
+// cb - A pointer to a <udi_gfx_range_cb_t>
+//
+typedef void udi_gfx_range_engine_req_op_t (udi_gfx_range_cb_t *cb );
+udi_gfx_range_engine_req_op_t udi_gfx_range_engine_req;
+
+// Function: udi_gfx_range_connector_req
+// function pointer prototype for getting a connector property range
+//
+// in:
+// cb - A pointer to a <udi_gfx_range_cb_t>
+//
+typedef void udi_gfx_range_connector_req_op_t (udi_gfx_range_cb_t *cb );
+udi_gfx_range_connector_req_op_t udi_gfx_range_connector_req;
+
+// Function: udi_gfx_range_engine_ack
+// function pointer prototype for replying an engine property range
+//
+// in:
+// cb - A pointer to a <udi_gfx_range_cb_t>
+//
+typedef void udi_gfx_range_engine_ack_op_t (udi_gfx_range_cb_t *cb );
+udi_gfx_range_engine_ack_op_t udi_gfx_range_engine_ack;
+
+// Function: udi_gfx_range_connector_ack
+// function pointer prototype for replying a connector property range
+//
+// in:
+// cb - A pointer to a <udi_gfx_range_cb_t>
+//
+typedef void udi_gfx_range_connector_ack_op_t (udi_gfx_range_cb_t *cb );
+udi_gfx_range_connector_ack_op_t udi_gfx_range_connector_ack;
+
+
+// Structure: udi_gfx_command_cb_t
+// Contains the operations of a command sequence
+typedef struct {
+ // Variable: gcb
+ // The main control block
+ udi_cb_t gcb;
+ udi_buf_t * commanddata;
+} udi_gfx_command_cb_t;
+#define UDI_GFX_COMMAND_CB_NUM 4
+
+// Function: udi_gfx_command
+// function pointer prototype for sending command data
+//
+// in:
+// cb - A pointer to a <udi_gfx_command_cb_t>
+//
+typedef void udi_gfx_command_req_op_t (udi_gfx_command_cb_t *cb );
+udi_gfx_command_req_op_t udi_gfx_command_req;
+
+// Function: udi_gfx_command_ack
+// function pointer prototype for sending command data
+//
+// in:
+// cb - A pointer to a <udi_gfx_command_cb_t>
+//
+typedef void udi_gfx_command_ack_op_t (udi_gfx_command_cb_t *cb);
+udi_gfx_command_ack_op_t udi_gfx_command_ack;
+
+/* Structure: udi_gfx_provider_ops_t
+ The graphics metalanguage e*ntry points (provider side)
+ */
+typedef const struct {
+ udi_channel_event_ind_op_t *channel_event_ind_op;
+ udi_gfx_bind_req_op_t *gfx_bind_req_op;
+ udi_gfx_unbind_req_op_t *gfx_unbind_req_op;
+ udi_gfx_set_connector_req_op_t *gfx_set_connector_req_op;
+ udi_gfx_set_engine_req_op_t *gfx_set_engine_req_op;
+ udi_gfx_get_connector_req_op_t *gfx_get_connector_req_op;
+ udi_gfx_get_engine_req_op_t *gfx_get_engine_req_op;
+ udi_gfx_range_connector_req_op_t *gfx_range_connector_req_op;
+ udi_gfx_range_engine_req_op_t *gfx_range_engine_req_op;
+ udi_gfx_command_req_op_t *gfx_command_op;
+} udi_gfx_provider_ops_t;
+
+/* Structure: udi_gfx_client_ops_t
+ * The graphics metalanguage entry points (client side)
+ */
+typedef const struct {
+ udi_channel_event_ind_op_t *channel_event_ind_op;
+ udi_gfx_bind_ack_op_t *udi_gfx_bind_ack;
+ udi_gfx_unbind_ack_op_t *udi_gfx_unbind_ack;
+ udi_gfx_set_connector_ack_op_t *udi_gfx_set_connector_ack;
+ udi_gfx_set_engine_ack_op_t *udi_gfx_set_engine_ack;
+ udi_gfx_get_connector_ack_op_t *udi_gfx_get_connector_ack;
+ udi_gfx_get_engine_ack_op_t *udi_gfx_get_engine_ack;
+ udi_gfx_range_connector_ack_op_t *udi_gfx_range_connector_ack;
+ udi_gfx_range_engine_ack_op_t *udi_gfx_range_engine_ack;
+ udi_gfx_command_ack_op_t *udi_gfx_command_ack;
+} udi_gfx_client_ops_t;
+
+
+// temporary
+#ifndef UDI_ANNOY_ME
+void EngineReturnSimpleRange (int source, int index, int prop, int first, int last, int modulus);
+void ConnectorReturnSimpleRange (int source, int index, int prop, int first, int last, int modulus);
+void EngineReturnConstantRange (int source, int index, int prop, int value);
+void ConnectorReturnConstantRange (int source, int index, int prop, int value);
+void EngineReturnBooleanRange (int source, int index, int prop, int value1, int value2);
+void ConnectorReturnBooleanRange (int source, int index, int prop, int value1, int value2);
+#endif
+
+#endif
+
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