Diva streaming IDI message header

master
MelwareDE 13 years ago
parent ef1052e6af
commit 0904e9d00a
  1. 134
      divastreaming/spi_descriptor.h

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/*
*
Copyright (c) Dialogic (R) 2009 - 2010
*
This source file is supplied for the use with
Eicon Networks range of DIVA Server Adapters.
*
Dialogic (R) File Revision : 1.9
*
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, or (at your option)
any later version.
*
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
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 __DIVA_SPI_DESCRIPTOR_H__
#define __DIVA_SPI_DESCRIPTOR_H__
#define MAX_SPI_DESCRIPTOR_LENGTH (4*1024)
#define MAX_XCONN_PER_DSP_DESCRIPTORS 8
#define SMALL_FLAT_RX_BUFFER_LENGTH 128
/*
SPI descriptor is always transferred in two parts:
byte* msg;
xmit(&msg[4], length-4);
xmit(msg, 4);
The second transfer is used as indication about end of the
descriptor transfer.
*/
typedef struct _diva_spi_msg_hdr {
byte length_lo; /* Total transfer length, includes the the length of the header, lo byte */
byte length_hi; /* Total transfer length, includes the length of the header, h byte */
byte Id; /* IDI Id. 0xff in case of the system message */
byte Ind; /* Ind */
} diva_spi_msg_hdr_t;
typedef struct _diva_spi_msg {
diva_spi_msg_hdr_t hdr;
byte data[MAX_SPI_DESCRIPTOR_LENGTH-sizeof(diva_spi_msg_hdr_t)];
} diva_spi_msg_t;
/*
System messages:
if Id == 0xff then system message
if (length_hi & 0x80) then system message is chained after the message
Messages:
byte - message type
byte - message length without this byte and the length byte
body - sequence of bytes, depends on the type of message
*/
/*
Used for comminication with
monitor task
*/
typedef struct _diva_dsp_monitor_message_hdr {
byte length_lo; /* Total transfer length, includes the the length of the header, lo byte */
byte length_hi; /* Total transfer length, includes the length of the header, h byte */
byte message_lo;
byte message_hi;
} diva_dsp_monitor_message_hdr_t;
typedef struct _diva_dsp_monitor_message {
diva_dsp_monitor_message_hdr_t hdr;
byte data[MAX_SPI_DESCRIPTOR_LENGTH-sizeof(diva_dsp_monitor_message_hdr_t)];
} diva_dsp_monitor_message_t;
/*
Format of the request:
length_lo
length_hi - set to "data_length + 5"
Id
Req - Stored in the Ind field
RegCh - Req Ch stored in the first byte of data field
data - first byte of data
*/
/*
Format of the return code without extended info:
length_lo
length_hi - set to 6
Id
Rc - Stored in the Ind field
RcCh - RcCh stored in the first byte of data field
type - Type. Set to zero for RC, stored in the second byte of data field
Format of the return code with extended info:
length_lo
length_hi - set to 14
Id
Rc - Stored in the Ind field
RcCh - RcCh stored in the first byte of data field
type - Type. Set to zero for RC, stored in the second byte of data field
dword - extended info type (bytes 2,3,4,5 of data field)
dword - extended info (bytes 6,7,8,9 of data field)
*/
/*
Format of the indication:
length_lo
length_hi - set to "data_lengt + 6"
Id
Ind - Stored in the Ind field
IndCh - IndCh stored in the first byte of data field
type - Type. Set to one for IND, stored in the second byte of data field
data - first byte of data, starts at third data byte
*/
typedef struct _diva_xconn_msg_hdr {
word counter;
word length;
} diva_xconn_msg_hdr_t;
typedef struct _diva_xconn_msg {
diva_xconn_msg_hdr_t hdr;
byte data[MAX_SPI_DESCRIPTOR_LENGTH-sizeof(diva_xconn_msg_hdr_t)];
} diva_xconn_msg_t;
#endif
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