From 4c63f091a4767fbd5c0cefed92446a1a184065d0 Mon Sep 17 00:00:00 2001
From: markster <markster@f38db490-d61c-443f-a65b-d21fe96a405b>
Date: Sun, 21 Nov 1999 02:26:43 +0000
Subject: Version 0.1.0 from FTP

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@65 f38db490-d61c-443f-a65b-d21fe96a405b
---
 include/asterisk/frame.h | 101 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100755 include/asterisk/frame.h

(limited to 'include/asterisk/frame.h')

diff --git a/include/asterisk/frame.h b/include/asterisk/frame.h
new file mode 100755
index 000000000..d9fb440f0
--- /dev/null
+++ b/include/asterisk/frame.h
@@ -0,0 +1,101 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * Asterisk internal frame definitions.
+ * 
+ * Copyright (C) 1999, Adtran Inc. and Linux Support Services, LLC
+ *
+ * Mark Spencer <markster@linux-support.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+
+#ifndef _ASTERISK_FRAME_H
+#define _ASTERISK_FRAME_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+/* A frame of data read used to communicate between 
+   between channels and applications */
+struct ast_frame {
+	int frametype;				/* Kind of frame */
+	int subclass;				/* Subclass, frame dependent */
+	int datalen;				/* Length of data */
+	int timelen;				/* Amount of time associated with this frame */
+	int mallocd;				/* Was the data malloc'd?  i.e. should we
+								   free it when we discard the frame? */
+	int offset;					/* How far into "data" the data really starts */
+	char *src;					/* Optional source of frame for debugging */
+	void *data;					/* Pointer to actual data */
+};
+
+struct ast_frame_chain {
+	/* XXX Should ast_frame chain's be just prt of frames, i.e. should they just link? XXX */
+	struct ast_frame *fr;
+	struct ast_frame_chain *next;
+};
+
+#define AST_FRIENDLY_OFFSET 	64		/* It's polite for a a new frame to
+										   have at least this number of bytes
+										   of offset before your real frame data
+										   so that additional headers can be
+										   added. */
+
+#define AST_MALLOCD_HDR		(1 << 0)	/* Need the header be free'd? */
+#define AST_MALLOCD_DATA	(1 << 1)	/* Need the data be free'd? */
+#define AST_MALLOCD_SRC		(1 << 2)	/* Need the source be free'd? (haha!) */
+
+/* Frame types */
+#define AST_FRAME_DTMF		1		/* A DTMF digit, subclass is the digit */
+#define AST_FRAME_VOICE		2		/* Voice data, subclass is AST_FORMAT_* */
+#define AST_FRAME_VIDEO		3		/* Video frame, maybe?? :) */
+#define AST_FRAME_CONTROL	4		/* A control frame, subclass is AST_CONTROL_* */
+#define AST_FRAME_NULL		5		/* An empty, useless frame */
+
+/* Data formats for capabilities and frames alike */
+#define AST_FORMAT_G723_1	(1 << 0)	/* G.723.1 compression */
+#define AST_FORMAT_GSM		(1 << 1)	/* GSM compression */
+#define AST_FORMAT_ULAW		(1 << 2)	/* Raw mu-law data (G.711) */
+#define AST_FORMAT_ALAW		(1 << 3)	/* Raw A-law data (G.711) */
+#define AST_FORMAT_MP3		(1 << 4)	/* MPEG-2 layer 3 */
+#define AST_FORMAT_ADPCM	(1 << 5)	/* ADPCM */
+#define AST_FORMAT_SLINEAR	(1 << 6)	/* Raw 16-bit Signed Linear (8000 Hz) PCM */
+#define AST_FORMAT_MAX_AUDIO (1 << 15)	/* Maximum audio format */
+#define AST_FORMAT_JPEG		(1 << 16)	/* JPEG Images */
+#define AST_FORMAT_PNG		(1 << 17)	/* PNG Images */
+#define AST_FORMAT_H261		(1 << 18)	/* H.261 Video */
+#define AST_FORMAT_H263		(1 << 19)	/* H.263 Video */
+
+/* Control frame types */
+#define AST_CONTROL_HANGUP		1			/* Other end has hungup */
+#define AST_CONTROL_RING		2			/* Local ring */
+#define AST_CONTROL_RINGING 	3			/* Remote end is ringing */
+#define AST_CONTROL_ANSWER		4			/* Remote end has answered */
+#define AST_CONTROL_BUSY		5			/* Remote end is busy */
+#define AST_CONTROL_TAKEOFFHOOK 6			/* Make it go off hook */
+#define AST_CONTROL_OFFHOOK		7			/* Line is off hook */
+
+/* Request a frame be allocated.  source is an optional source of the frame, 
+   len is the requested length, or "0" if the caller will supply the buffer */
+struct ast_frame *ast_fralloc(char *source, int len);
+
+/* Free a frame, and the memory it used if applicable */
+void ast_frfree(struct ast_frame *fr);
+
+/* Take a frame, and if it's not been malloc'd, make a malloc'd copy
+   and if the data hasn't been malloced then make the
+   data malloc'd.  If you need to store frames, say for queueing, then
+   you should call this function. */
+struct ast_frame *ast_frisolate(struct ast_frame *fr);
+
+void ast_frchain(struct ast_frame_chain *fc);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+
+#endif
-- 
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