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Diffstat (limited to '1.4.23-rc4/include/asterisk/dsp.h')
-rw-r--r-- | 1.4.23-rc4/include/asterisk/dsp.h | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/1.4.23-rc4/include/asterisk/dsp.h b/1.4.23-rc4/include/asterisk/dsp.h deleted file mode 100644 index ccc484c14..000000000 --- a/1.4.23-rc4/include/asterisk/dsp.h +++ /dev/null @@ -1,124 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2005, Digium, Inc. - * - * Mark Spencer <markster@digium.com> - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * \brief Convenient Signal Processing routines - */ - -#ifndef _ASTERISK_DSP_H -#define _ASTERISK_DSP_H - -#define DSP_FEATURE_SILENCE_SUPPRESS (1 << 0) -#define DSP_FEATURE_BUSY_DETECT (1 << 1) -#define DSP_FEATURE_DTMF_DETECT (1 << 3) -#define DSP_FEATURE_FAX_DETECT (1 << 4) - -#define DSP_DIGITMODE_DTMF 0 /* Detect DTMF digits */ -#define DSP_DIGITMODE_MF 1 /* Detect MF digits */ - -#define DSP_DIGITMODE_NOQUELCH (1 << 8) /* Do not quelch DTMF from in-band */ -#define DSP_DIGITMODE_MUTECONF (1 << 9) /* Mute conference */ -#define DSP_DIGITMODE_MUTEMAX (1 << 10) /* Delay audio by a frame to try to extra quelch */ -#define DSP_DIGITMODE_RELAXDTMF (1 << 11) /* "Radio" mode (relaxed DTMF) */ - -#define DSP_PROGRESS_TALK (1 << 16) /* Enable talk detection */ -#define DSP_PROGRESS_RINGING (1 << 17) /* Enable calling tone detection */ -#define DSP_PROGRESS_BUSY (1 << 18) /* Enable busy tone detection */ -#define DSP_PROGRESS_CONGESTION (1 << 19) /* Enable congestion tone detection */ -#define DSP_FEATURE_CALL_PROGRESS (DSP_PROGRESS_TALK | DSP_PROGRESS_RINGING | DSP_PROGRESS_BUSY | DSP_PROGRESS_CONGESTION) - -#define DSP_TONE_STATE_SILENCE 0 -#define DSP_TONE_STATE_RINGING 1 -#define DSP_TONE_STATE_DIALTONE 2 -#define DSP_TONE_STATE_TALKING 3 -#define DSP_TONE_STATE_BUSY 4 -#define DSP_TONE_STATE_SPECIAL1 5 -#define DSP_TONE_STATE_SPECIAL2 6 -#define DSP_TONE_STATE_SPECIAL3 7 -#define DSP_TONE_STATE_HUNGUP 8 - -struct ast_dsp; - -struct ast_dsp *ast_dsp_new(void); -void ast_dsp_free(struct ast_dsp *dsp); - -/*! \brief Set threshold value for silence */ -void ast_dsp_set_threshold(struct ast_dsp *dsp, int threshold); - -/*! \brief Set number of required cadences for busy */ -void ast_dsp_set_busy_count(struct ast_dsp *dsp, int cadences); - -/*! \brief Set expected lengths of the busy tone */ -void ast_dsp_set_busy_pattern(struct ast_dsp *dsp, int tonelength, int quietlength); - -/*! \brief Scans for progress indication in audio */ -int ast_dsp_call_progress(struct ast_dsp *dsp, struct ast_frame *inf); - -/*! \brief Set zone for doing progress detection */ -int ast_dsp_set_call_progress_zone(struct ast_dsp *dsp, char *zone); - -/*! \brief Return AST_FRAME_NULL frames when there is silence, AST_FRAME_BUSY on - busies, and call progress, all dependent upon which features are enabled */ -struct ast_frame *ast_dsp_process(struct ast_channel *chan, struct ast_dsp *dsp, struct ast_frame *inf); - -/*! \brief Return non-zero if this is silence. Updates "totalsilence" with the total - number of seconds of silence */ -int ast_dsp_silence(struct ast_dsp *dsp, struct ast_frame *f, int *totalsilence); - -/*! \brief Return non-zero if historically this should be a busy, request that - ast_dsp_silence has already been called */ -int ast_dsp_busydetect(struct ast_dsp *dsp); - -/*! \brief Return non-zero if DTMF hit was found */ -int ast_dsp_digitdetect(struct ast_dsp *dsp, struct ast_frame *f); - -/*! \brief Reset total silence count */ -void ast_dsp_reset(struct ast_dsp *dsp); - -/*! \brief Reset DTMF detector */ -void ast_dsp_digitreset(struct ast_dsp *dsp); - -/*! \brief Select feature set */ -void ast_dsp_set_features(struct ast_dsp *dsp, int features); - -/*! \brief Get pending DTMF/MF digits */ -int ast_dsp_getdigits(struct ast_dsp *dsp, char *buf, int max); - -/*! \brief Set digit mode */ -int ast_dsp_digitmode(struct ast_dsp *dsp, int digitmode); - -/*! \brief Get tstate (Tone State) */ -int ast_dsp_get_tstate(struct ast_dsp *dsp); - -/*! \brief Get tcount (Threshold counter) */ -int ast_dsp_get_tcount(struct ast_dsp *dsp); - -/*! - * \brief Hint that a frame from a dsp was freed - * - * This is called from ast_frame_free if AST_FRFLAG_FROM_DSP is set. This occurs - * because it is possible for the dsp to be freed while someone still holds a reference - * to the frame that is in that dsp. This has been known to happen when the dsp on a Zap - * channel detects a busy signal. The channel is hung up, and the application that read the - * frame to begin with still has a reference to the frame. - * - * \return nothing - */ -void ast_dsp_frame_freed(struct ast_frame *fr); - -#endif /* _ASTERISK_DSP_H */ |