135 lines
4.7 KiB
C
135 lines
4.7 KiB
C
/*
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* libiax: An implementation of the Inter-Asterisk eXchange protocol
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*
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* Asterisk internal frame definitions.
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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*
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* This program is free software, distributed under the terms of
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* the GNU Lesser General Public License. Other components of
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* Asterisk are distributed under The GNU General Public License
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* only.
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*/
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#ifndef _LIBIAX_FRAME_H
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#define _LIBIAX_FRAME_H
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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/* Frame types */
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#define AST_FRAME_DTMF 1 /* A DTMF digit, subclass is the digit */
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#define AST_FRAME_VOICE 2 /* Voice data, subclass is AST_FORMAT_* */
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#define AST_FRAME_VIDEO 3 /* Video frame, maybe?? :) */
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#define AST_FRAME_CONTROL 4 /* A control frame, subclass is AST_CONTROL_* */
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#define AST_FRAME_NULL 5 /* An empty, useless frame */
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#define AST_FRAME_IAX 6 /* Inter Aterisk Exchange private frame type */
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#define AST_FRAME_TEXT 7 /* Text messages */
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#define AST_FRAME_IMAGE 8 /* Image Frames */
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#define AST_FRAME_HTML 9 /* HTML Frames */
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#define AST_FRAME_CNG 10 /* Comfort Noise frame (subclass is level of CNG in -dBov) */
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/* HTML subclasses */
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#define AST_HTML_URL 1 /* Sending a URL */
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#define AST_HTML_DATA 2 /* Data frame */
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#define AST_HTML_BEGIN 4 /* Beginning frame */
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#define AST_HTML_END 8 /* End frame */
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#define AST_HTML_LDCOMPLETE 16 /* Load is complete */
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#define AST_HTML_NOSUPPORT 17 /* Peer is unable to support HTML */
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#define AST_HTML_LINKURL 18 /* Send URL and track */
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#define AST_HTML_UNLINK 19 /* Request no more linkage */
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#define AST_HTML_LINKREJECT 20 /* Reject LINKURL */
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/* Data formats for capabilities and frames alike */
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/*! G.723.1 compression */
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#define AST_FORMAT_G723_1 (1 << 0)
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/*! GSM compression */
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#define AST_FORMAT_GSM (1 << 1)
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/*! Raw mu-law data (G.711) */
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#define AST_FORMAT_ULAW (1 << 2)
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/*! Raw A-law data (G.711) */
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#define AST_FORMAT_ALAW (1 << 3)
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/*! ADPCM (G.726, 32kbps) */
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#define AST_FORMAT_G726 (1 << 4)
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/*! ADPCM (IMA) */
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#define AST_FORMAT_ADPCM (1 << 5)
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/*! Raw 16-bit Signed Linear (8000 Hz) PCM */
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#define AST_FORMAT_SLINEAR (1 << 6)
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/*! LPC10, 180 samples/frame */
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#define AST_FORMAT_LPC10 (1 << 7)
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/*! G.729A audio */
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#define AST_FORMAT_G729A (1 << 8)
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/*! SpeeX Free Compression */
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#define AST_FORMAT_SPEEX (1 << 9)
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/*! iLBC Free Compression */
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#define AST_FORMAT_ILBC (1 << 10)
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/*! Maximum audio format */
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#define AST_FORMAT_MAX_AUDIO (1 << 15)
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/*! JPEG Images */
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#define AST_FORMAT_JPEG (1 << 16)
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/*! PNG Images */
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#define AST_FORMAT_PNG (1 << 17)
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/*! H.261 Video */
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#define AST_FORMAT_H261 (1 << 18)
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/*! H.263 Video */
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#define AST_FORMAT_H263 (1 << 19)
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/*! Max one */
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#define AST_FORMAT_MAX_VIDEO (1 << 24)
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/* Control frame types */
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#define AST_CONTROL_HANGUP 1 /* Other end has hungup */
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#define AST_CONTROL_RING 2 /* Local ring */
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#define AST_CONTROL_RINGING 3 /* Remote end is ringing */
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#define AST_CONTROL_ANSWER 4 /* Remote end has answered */
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#define AST_CONTROL_BUSY 5 /* Remote end is busy */
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#define AST_CONTROL_TAKEOFFHOOK 6 /* Make it go off hook */
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#define AST_CONTROL_OFFHOOK 7 /* Line is off hook */
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#define AST_CONTROL_CONGESTION 8 /* Congestion (circuits busy) */
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#define AST_CONTROL_FLASH 9 /* Flash hook */
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#define AST_CONTROL_WINK 10 /* Wink */
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#define AST_CONTROL_OPTION 11 /* Set an option */
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#define AST_FRIENDLY_OFFSET 64 /* Reserved header space */
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struct ast_frame {
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/*! Kind of frame */
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int frametype;
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/*! Subclass, frame dependent */
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int subclass;
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/*! Length of data */
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int datalen;
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/*! Number of 8khz samples in this frame */
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int samples;
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/*! Was the data malloc'd? i.e. should we free it when we discard the f
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rame? */
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int mallocd;
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/*! How far into "data" the data really starts */
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int offset;
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/*! Optional source of frame for debugging */
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char *src;
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/*! Pointer to actual data */
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void *data;
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/*! Next/Prev for linking stand alone frames */
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struct ast_frame *prev;
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/*! Next/Prev for linking stand alone frames */
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struct ast_frame *next;
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/* Unused except
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if debugging is turned on, but left
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in the struct
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so that it can be turned on without
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requiring a r
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ecompile of the whole thing */
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};
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif
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