Sun Aug 6 15:11:16 2006

Asterisk developer's documentation


Main Page | Modules | Alphabetical List | Data Structures | Directories | File List | Data Fields | Globals | Related Pages

frame.h File Reference

Asterisk internal frame definitions. More...

#include <sys/types.h>
#include <sys/time.h>
#include "asterisk/endian.h"

Include dependency graph for frame.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Defines

#define AST_CONTROL_ANSWER   4
#define AST_CONTROL_BUSY   5
#define AST_CONTROL_CONGESTION   8
#define AST_CONTROL_FLASH   9
#define AST_CONTROL_HANGUP   1
#define AST_CONTROL_HOLD   16
#define AST_CONTROL_OFFHOOK   7
#define AST_CONTROL_OPTION   11
#define AST_CONTROL_PROCEEDING   15
#define AST_CONTROL_PROGRESS   14
#define AST_CONTROL_RADIO_KEY   12
#define AST_CONTROL_RADIO_UNKEY   13
#define AST_CONTROL_RING   2
#define AST_CONTROL_RINGING   3
#define AST_CONTROL_TAKEOFFHOOK   6
#define AST_CONTROL_UNHOLD   17
#define AST_CONTROL_VIDUPDATE   18
#define AST_CONTROL_WINK   10
#define AST_FORMAT_ADPCM   (1 << 5)
#define AST_FORMAT_ALAW   (1 << 3)
#define AST_FORMAT_G723_1   (1 << 0)
#define AST_FORMAT_G726   (1 << 4)
#define AST_FORMAT_G729A   (1 << 8)
#define AST_FORMAT_GSM   (1 << 1)
#define AST_FORMAT_H261   (1 << 18)
#define AST_FORMAT_H263   (1 << 19)
#define AST_FORMAT_H263_PLUS   (1 << 20)
#define AST_FORMAT_ILBC   (1 << 10)
#define AST_FORMAT_JPEG   (1 << 16)
#define AST_FORMAT_LPC10   (1 << 7)
#define AST_FORMAT_MAX_AUDIO   (1 << 15)
#define AST_FORMAT_MAX_VIDEO   (1 << 24)
#define AST_FORMAT_PNG   (1 << 17)
#define AST_FORMAT_SLINEAR   (1 << 6)
#define AST_FORMAT_SPEEX   (1 << 9)
#define AST_FORMAT_ULAW   (1 << 2)
#define ast_frame_byteswap_be(fr)   do { struct ast_frame *__f = (fr); ast_swapcopy_samples(__f->data, __f->data, __f->samples); } while(0)
#define ast_frame_byteswap_le(fr)   do { ; } while(0)
#define AST_FRAME_CNG   10
#define AST_FRAME_CONTROL   4
#define AST_FRAME_DTMF   1
#define AST_FRAME_HTML   9
#define AST_FRAME_IAX   6
#define AST_FRAME_IMAGE   8
#define AST_FRAME_NULL   5
#define AST_FRAME_T38   11
#define AST_FRAME_TEXT   7
#define AST_FRAME_VIDEO   3
#define AST_FRAME_VOICE   2
#define AST_FRIENDLY_OFFSET   64
#define AST_HTML_BEGIN   4
#define AST_HTML_DATA   2
#define AST_HTML_END   8
#define AST_HTML_LDCOMPLETE   16
#define AST_HTML_LINKREJECT   20
#define AST_HTML_LINKURL   18
#define AST_HTML_NOSUPPORT   17
#define AST_HTML_UNLINK   19
#define AST_HTML_URL   1
#define AST_MALLOCD_DATA   (1 << 1)
#define AST_MALLOCD_HDR   (1 << 0)
#define AST_MALLOCD_SRC   (1 << 2)
#define AST_MIN_OFFSET   32
#define AST_OPTION_AUDIO_MODE   4
#define AST_OPTION_FLAG_ACCEPT   1
#define AST_OPTION_FLAG_ANSWER   5
#define AST_OPTION_FLAG_QUERY   4
#define AST_OPTION_FLAG_REJECT   2
#define AST_OPTION_FLAG_REQUEST   0
#define AST_OPTION_FLAG_WTF   6
#define AST_OPTION_RELAXDTMF   3
#define AST_OPTION_RXGAIN   6
#define AST_OPTION_TDD   2
#define AST_OPTION_TONE_VERIFY   1
#define AST_OPTION_TXGAIN   5
#define ast_smoother_feed(s, f)   __ast_smoother_feed(s, f, 0)
#define ast_smoother_feed_be(s, f)   __ast_smoother_feed(s, f, 1)
#define ast_smoother_feed_le(s, f)   __ast_smoother_feed(s, f, 0)
#define AST_SMOOTHER_FLAG_G729   (1 << 0)

Functions

int __ast_smoother_feed (struct ast_smoother *s, struct ast_frame *f, int swap)
char * ast_codec2str (int codec)
 Get a name from a format Gets a name from a format.
int ast_codec_choose (struct ast_codec_pref *pref, int formats, int find_best)
 Select the best format according to preference list from supplied options. If "find_best" is non-zero then if nothing is found, the "Best" format of the format list is selected, otherwise 0 is returned.
int ast_codec_get_len (int format, int samples)
 Returns the number of bytes for the number of samples of the given format.
int ast_codec_get_samples (struct ast_frame *f)
 Returns the number of samples contained in the frame.
static int ast_codec_interp_len (int format)
 Gets duration in ms of interpolation frame for a format.
int ast_codec_pref_append (struct ast_codec_pref *pref, int format)
 Append a codec to a preference list, removing it first if it was already there.
void ast_codec_pref_convert (struct ast_codec_pref *pref, char *buf, size_t size, int right)
 Shift a codec preference list up or down 65 bytes so that it becomes an ASCII string.
int ast_codec_pref_index (struct ast_codec_pref *pref, int index)
 Codec located at a particular place in the preference index.
void ast_codec_pref_init (struct ast_codec_pref *pref)
 Initialize a codec preference to "no preference".
void ast_codec_pref_remove (struct ast_codec_pref *pref, int format)
 Remove a codec from a preference list.
int ast_codec_pref_string (struct ast_codec_pref *pref, char *buf, size_t size)
 Dump codec preference list into a string.
int ast_fr_fdhangup (int fd)
 Sends a hangup to an fd Send a hangup (NULL equivalent) on an fd.
ast_frameast_fr_fdread (int fd)
 Reads a frame from an fd Read a frame from a stream or packet fd, as written by fd_write.
int ast_fr_fdwrite (int fd, struct ast_frame *frame)
int ast_frame_adjust_volume (struct ast_frame *f, int adjustment)
 Adjusts the volume of the audio samples contained in a frame.
void ast_frame_dump (char *name, struct ast_frame *f, char *prefix)
int ast_frame_slinear_sum (struct ast_frame *f1, struct ast_frame *f2)
 Sums two frames of audio samples.
ast_frameast_frdup (struct ast_frame *fr)
 Copies a frame.
void ast_frfree (struct ast_frame *fr)
 Requests a frame to be allocated Frees a frame.
ast_frameast_frisolate (struct ast_frame *fr)
 Copies a frame.
ast_format_listast_get_format_list (size_t *size)
ast_format_listast_get_format_list_index (int index)
int ast_getformatbyname (char *name)
 Gets a format from a name.
char * ast_getformatname (int format)
 Get the name of a format.
char * ast_getformatname_multiple (char *buf, size_t size, int format)
 Get the names of a set of formats.
void ast_parse_allow_disallow (struct ast_codec_pref *pref, int *mask, const char *list, int allowing)
 Parse an "allow" or "deny" line and update the mask and pref if provided.
void ast_smoother_free (struct ast_smoother *s)
int ast_smoother_get_flags (struct ast_smoother *smoother)
ast_smootherast_smoother_new (int bytes)
ast_frameast_smoother_read (struct ast_smoother *s)
void ast_smoother_reset (struct ast_smoother *s, int bytes)
void ast_smoother_set_flags (struct ast_smoother *smoother, int flags)
void ast_swapcopy_samples (void *dst, const void *src, int samples)


Detailed Description

Asterisk internal frame definitions.

Definition in file frame.h.


Define Documentation

#define AST_CONTROL_ANSWER   4
 

Remote end has answered

Definition at line 217 of file frame.h.

Referenced by __ast_dsp_call_progress(), __ast_request_and_dial(), agent_read(), alsa_call(), ast_dsp_process(), ast_feature_request_and_dial(), ast_frame_dump(), ast_pickup_call(), ast_read(), ast_waitfordigit_full(), cb_events(), connection_made(), console_answer(), console_sendtext(), control2str(), handle_hd_hf(), handle_message(), handle_response_invite(), i4l_handle_escape(), iax2_answer(), local_answer(), misdn_indication(), monitor_handle_owned(), nbs_call(), oss_answer(), oss_call(), phone_exception(), pickup_exec(), rpt(), vpb_indicate(), wait_for_answer(), zt_handle_event(), and zt_read().

#define AST_CONTROL_BUSY   5
 

Remote end is busy

Definition at line 219 of file frame.h.

Referenced by __ast_dsp_call_progress(), __ast_request_and_dial(), alsa_indicate(), aopen_handle_escape(), ast_bridge_call(), ast_dsp_process(), ast_feature_request_and_dial(), ast_frame_dump(), ast_indicate(), async_wait(), bestdata_handle_escape(), builtin_atxfer(), control2str(), handle_response(), i4l_handle_escape(), mgcp_indicate(), misdn_indication(), monitor_handle_owned(), oh323_indicate(), oss_indicate(), pbx_builtin_busy(), rpt_exec(), send_cause2ast(), sip_indicate(), skinny_call(), skinny_indicate(), vpb_indicate(), wait_for_answer(), zt_indicate(), and zt_read().

#define AST_CONTROL_CONGESTION   8
 

Congestion (circuits busy)

Definition at line 225 of file frame.h.

Referenced by __ast_dsp_call_progress(), __ast_request_and_dial(), alsa_indicate(), ast_bridge_call(), ast_dsp_process(), ast_feature_request_and_dial(), ast_frame_dump(), ast_indicate(), async_wait(), auto_congest(), control2str(), disa_exec(), handle_response(), handle_response_invite(), mgcp_indicate(), misdn_indication(), monitor_handle_owned(), nbs_call(), oh323_indicate(), oss_hangup(), oss_indicate(), pbx_builtin_congestion(), send_cause2ast(), sip_indicate(), skinny_indicate(), socket_read(), vpb_indicate(), wait_for_answer(), zt_indicate(), and zt_read().

#define AST_CONTROL_FLASH   9
 

Flash hook

Definition at line 227 of file frame.h.

Referenced by ast_bridge_call(), ast_frame_dump(), console_flash(), control2str(), handle_request_info(), misdn_indication(), monitor_handle_owned(), send_dtmf(), wait_for_answer(), zt_indicate(), and zt_read().

#define AST_CONTROL_HANGUP   1
 

Other end has hungup

Definition at line 211 of file frame.h.

Referenced by __ast_dsp_call_progress(), __ast_request_and_dial(), app_exec(), ast_bridge_call(), ast_dsp_process(), ast_feature_request_and_dial(), ast_frame_dump(), ast_queue_frame(), ast_queue_hangup(), ast_read(), ast_recvtext(), ast_waitfordigit_full(), attempt_transmit(), control2str(), disa_exec(), do_parking_thread(), local_hangup(), monitor_handle_owned(), receive_dtmf_digits(), rpt(), rpt_exec(), vpb_indicate(), and wait_for_answer().

#define AST_CONTROL_HOLD   16
 

Indicate call is placed on hold

Definition at line 241 of file frame.h.

Referenced by ast_generic_bridge(), ast_indicate(), ast_park_call(), ast_rtp_bridge(), builtin_atxfer(), builtin_blindtransfer(), control2str(), misdn_indication(), sip_indicate(), wait_for_answer(), and zt_indicate().

#define AST_CONTROL_OFFHOOK   7
 

Line is off hook

Definition at line 223 of file frame.h.

Referenced by ast_frame_dump(), control2str(), misdn_indication(), wait_for_answer(), and zt_handle_event().

#define AST_CONTROL_OPTION   11
 

Set a low-level option

Definition at line 231 of file frame.h.

Referenced by ast_bridge_call(), ast_frame_dump(), control2str(), and iax2_setoption().

#define AST_CONTROL_PROCEEDING   15
 

Indicate CALL PROCEEDING

Definition at line 239 of file frame.h.

Referenced by ast_indicate(), control2str(), oh323_indicate(), sip_indicate(), skinny_indicate(), wait_for_answer(), and zt_indicate().

#define AST_CONTROL_PROGRESS   14
 

Indicate PROGRESS

Definition at line 237 of file frame.h.

Referenced by __ast_request_and_dial(), ast_indicate(), cb_events(), control2str(), handle_response(), handle_response_invite(), misdn_indication(), oh323_indicate(), pbx_builtin_progress(), progress(), setup_rtp_connection(), sip_indicate(), skinny_indicate(), socket_read(), wait_for_answer(), and zt_indicate().

#define AST_CONTROL_RADIO_KEY   12
 

Key Radio

Definition at line 233 of file frame.h.

Referenced by ast_frame_dump(), control2str(), function_remote(), handle_remote_data(), handle_remote_phone_dtmf(), rmt_telem_start(), rpt(), rpt_exec(), zt_handle_event(), zt_indicate(), and zt_read().

#define AST_CONTROL_RADIO_UNKEY   13
 

Un-Key Radio

Definition at line 235 of file frame.h.

Referenced by ast_frame_dump(), control2str(), function_remote(), handle_remote_data(), handle_remote_phone_dtmf(), rmt_telem_finish(), rmt_telem_start(), rpt(), rpt_exec(), zt_handle_event(), zt_indicate(), and zt_read().

#define AST_CONTROL_RING   2
 

Local ring

Definition at line 213 of file frame.h.

Referenced by aopen_handle_escape(), ast_frame_dump(), bestdata_handle_escape(), control2str(), i4l_handle_escape(), misdn_indication(), modem_mini_packet(), monitor_handle_owned(), oss_call(), ss_thread(), waitforring_exec(), and zt_handle_event().

#define AST_CONTROL_RINGING   3
 

Remote end is ringing

Definition at line 215 of file frame.h.

Referenced by __ast_dsp_call_progress(), __ast_request_and_dial(), alsa_call(), alsa_indicate(), ast_bridge_call(), ast_dsp_process(), ast_feature_request_and_dial(), ast_frame_dump(), ast_indicate(), ast_waitfordigit_full(), attempt_transfer(), cb_events(), chan_ringing(), control2str(), dial_exec_full(), handle_response_invite(), i4l_handle_escape(), mgcp_call(), mgcp_indicate(), misdn_indication(), oh323_indicate(), oss_call(), oss_indicate(), pbx_builtin_ringing(), phone_call(), progress(), queue_exec(), sip_indicate(), skinny_call(), skinny_indicate(), vpb_call(), vpb_fixup(), vpb_indicate(), wait_for_answer(), zt_fixup(), zt_handle_event(), zt_indicate(), and zt_read().

#define AST_CONTROL_TAKEOFFHOOK   6
 

Make it go off hook

Definition at line 221 of file frame.h.

Referenced by ast_frame_dump(), control2str(), and misdn_indication().

#define AST_CONTROL_UNHOLD   17
 

Indicate call is left from hold

Definition at line 243 of file frame.h.

Referenced by ast_feature_request_and_dial(), ast_generic_bridge(), ast_indicate(), ast_rtp_bridge(), builtin_atxfer(), builtin_blindtransfer(), control2str(), do_parking_thread(), misdn_indication(), park_exec(), sip_indicate(), wait_for_answer(), and zt_indicate().

#define AST_CONTROL_VIDUPDATE   18
 

Indicate video frame update

Definition at line 245 of file frame.h.

Referenced by alsa_indicate(), ast_generic_bridge(), ast_indicate(), ast_play_and_record_full(), ast_rtp_bridge(), handle_recordfile(), handle_request_info(), oss_indicate(), record_exec(), sip_indicate(), and wait_for_answer().

#define AST_CONTROL_WINK   10
 

Wink

Definition at line 229 of file frame.h.

Referenced by ast_frame_dump(), and control2str().

#define AST_FORMAT_ADPCM   (1 << 5)
 

ADPCM (IMA)

Definition at line 183 of file frame.h.

Referenced by adpcmtolin_sample(), ast2vpbformat(), ast2vpbformatname(), ast_best_codec(), ast_codec_get_len(), ast_codec_get_samples(), ast_rtp_write(), astformatbits(), convertcap(), lintoadpcm_frameout(), load_module(), vox_open(), vox_read(), and vox_write().

#define AST_FORMAT_ALAW   (1 << 3)
 

Raw A-law data (G.711)

Definition at line 179 of file frame.h.

Referenced by alawtolin_sample(), alawtoulaw_sample(), ast2vpbformat(), ast2vpbformatname(), ast_best_codec(), ast_codec_get_len(), ast_codec_get_samples(), ast_dsp_process(), ast_rtp_write(), astformatbits(), cb_events(), convertcap(), lintoalaw_frameout(), load_module(), misdn_read(), misdn_set_opt_exec(), misdn_tx2ast_frm(), pcm_open(), pcm_read(), pcm_write(), sms_exec(), sms_generate(), ulawtoalaw_frameout(), zt_new(), zt_read(), and zt_write().

#define AST_FORMAT_G723_1   (1 << 0)
 

G.723.1 compression

Definition at line 173 of file frame.h.

Referenced by ast_best_codec(), ast_codec_get_samples(), ast_rtp_write(), convertcap(), g723_open(), g723_write(), g723tolin_sample(), lintog723_frameout(), load_module(), phone_request(), phone_setup(), and phone_write().

#define AST_FORMAT_G726   (1 << 4)
 

ADPCM (G.726, 32kbps)

Definition at line 181 of file frame.h.

Referenced by ast_best_codec(), ast_codec_get_len(), ast_codec_get_samples(), ast_rtp_write(), g726_16_open(), g726_24_open(), g726_32_open(), g726_40_open(), g726_read(), g726_write(), g726tolin_sample(), lintog726_frameout(), and load_module().

#define AST_FORMAT_G729A   (1 << 8)
 

G.729A audio

Definition at line 189 of file frame.h.

Referenced by add_codec_to_sdp(), ast_best_codec(), ast_codec_get_len(), ast_codec_get_samples(), ast_rtp_write(), convertcap(), g729_open(), g729_read(), g729_write(), and load_module().

#define AST_FORMAT_GSM   (1 << 1)
 

GSM compression

Definition at line 175 of file frame.h.

Referenced by ast_best_codec(), ast_codec_get_len(), ast_codec_get_samples(), ast_rtp_write(), convertcap(), gsm_open(), gsm_read(), gsm_write(), gsmtolin_sample(), lintogsm_frameout(), load_module(), wav_open(), wav_read(), and wav_write().

#define AST_FORMAT_H261   (1 << 18)
 

H.261 Video

Definition at line 201 of file frame.h.

Referenced by ast_rtp_write().

#define AST_FORMAT_H263   (1 << 19)
 

H.263 Video

Definition at line 203 of file frame.h.

Referenced by ast_rtp_write(), h263_open(), h263_read(), h263_write(), and load_module().

#define AST_FORMAT_H263_PLUS   (1 << 20)
 

H.263+ Video

Definition at line 205 of file frame.h.

Referenced by ast_rtp_write().

#define AST_FORMAT_ILBC   (1 << 10)
 

iLBC Free Compression

Definition at line 193 of file frame.h.

Referenced by ast_best_codec(), ast_codec_get_len(), ast_codec_get_samples(), ast_codec_interp_len(), ast_rtp_write(), convertcap(), ilbc_open(), ilbc_read(), ilbc_write(), ilbctolin_sample(), lintoilbc_frameout(), and load_module().

#define AST_FORMAT_JPEG   (1 << 16)
 

JPEG Images

Definition at line 197 of file frame.h.

Referenced by jpeg_read_image(), and jpeg_write_image().

#define AST_FORMAT_LPC10   (1 << 7)
 

LPC10, 180 samples/frame

Definition at line 187 of file frame.h.

Referenced by ast_best_codec(), ast_codec_get_samples(), ast_rtp_write(), lintolpc10_frameout(), and lpc10tolin_sample().

#define AST_FORMAT_MAX_AUDIO   (1 << 15)
 

Maximum audio format

Definition at line 195 of file frame.h.

Referenced by add_sdp(), ast_closestream(), ast_filehelper(), ast_playstream(), ast_rtp_raw_write(), ast_rtp_read(), ast_writestream(), oh323_request(), phone_read(), sip_request_call(), transmit_connect_with_sdp(), and transmit_modify_with_sdp().

#define AST_FORMAT_MAX_VIDEO   (1 << 24)
 

Maximum video format

Definition at line 207 of file frame.h.

Referenced by add_sdp().

#define AST_FORMAT_PNG   (1 << 17)
 

PNG Images

Definition at line 199 of file frame.h.

Referenced by phone_read().

#define AST_FORMAT_SLINEAR   (1 << 6)
 

Raw 16-bit Signed Linear (8000 Hz) PCM

Definition at line 185 of file frame.h.

Referenced by action_originate(), adpcmtolin_frameout(), agent_new(), alawtolin_frameout(), alsa_new(), alsa_read(), alsa_request(), aopen_read(), ast2vpbformat(), ast2vpbformatname(), ast_app_getvoice(), ast_best_codec(), ast_channel_make_compatible(), ast_channel_spy_add(), ast_channel_start_silence_generator(), ast_codec_get_len(), ast_codec_get_samples(), ast_dsp_call_progress(), ast_dsp_digitdetect(), ast_dsp_process(), ast_dsp_silence(), ast_frame_adjust_volume(), ast_frame_slinear_sum(), ast_play_and_prepend(), ast_play_and_record_full(), ast_rtp_read(), ast_rtp_write(), ast_slinfactory_feed(), astformatbits(), attempt_reconnect(), attempt_thread(), background_detect_exec(), bestdata_read(), channel_spy(), chanspy_exec(), conf_run(), dictate_exec(), do_chanreads(), do_waiting(), eagi_exec(), fast_originate(), function_ilink(), g723tolin_frameout(), g726tolin_frameout(), gsmtolin_frameout(), handle_recordfile(), i4l_read(), i4l_write(), iax_frame_wrap(), ices_exec(), ilbctolin_frameout(), launch_monitor_thread(), linear_alloc(), linear_generator(), lintoadpcm_sample(), lintoalaw_sample(), lintog723_sample(), lintog726_sample(), lintogsm_sample(), lintoilbc_sample(), lintolpc10_sample(), lintospeex_sample(), lintoulaw_sample(), load_module(), load_moh_classes(), lpc10tolin_frameout(), measurenoise(), misdn_set_opt_exec(), moh_class_malloc(), mp3_exec(), nbs_request(), nbs_xwrite(), NBScat_exec(), ogg_vorbis_read(), ogg_vorbis_write(), oss_new(), oss_read(), oss_request(), page_thread(), parkandannounce_exec(), phone_new(), phone_read(), phone_request(), phone_setup(), phone_write(), playtones_alloc(), playtones_generator(), queue_frame_to_spies(), record_exec(), rpt(), rpt_call(), rpt_exec(), rpt_tele_thread(), send_waveform_to_channel(), silence_generator_generate(), slinear_open(), slinear_read(), slinear_write(), sms_exec(), sms_generate(), socket_read(), speextolin_frameout(), tonepair_alloc(), tonepair_generator(), ulawtolin_frameout(), vpb_new(), wav_open(), wav_read(), wav_write(), zt_new(), zt_read(), zt_request(), and zt_write().

#define AST_FORMAT_SPEEX   (1 << 9)
 

SpeeX Free Compression

Definition at line 191 of file frame.h.

Referenced by ast_best_codec(), ast_codec_get_samples(), ast_rtp_write(), convertcap(), lintospeex_frameout(), and speextolin_sample().

#define AST_FORMAT_ULAW   (1 << 2)
 

Raw mu-law data (G.711)

Definition at line 177 of file frame.h.

Referenced by __adsi_transmit_messages(), adsi_careful_send(), adsi_transmit_message_full(), alarmreceiver_exec(), alawtoulaw_frameout(), ast2vpbformat(), ast2vpbformatname(), ast_best_codec(), ast_codec_get_len(), ast_codec_get_samples(), ast_dsp_process(), ast_rtp_write(), astformatbits(), au_open(), au_read(), au_write(), build_conf(), conf_run(), convertcap(), disa_exec(), get_callerid_ast(), lintoulaw_frameout(), load_module(), milliwatt_exec(), milliwatt_generate(), pcm_open(), pcm_read(), pcm_write(), phone_request(), phone_setup(), phone_write(), send_tone_burst(), ulawtoalaw_sample(), ulawtolin_sample(), zt_new(), zt_read(), zt_request(), and zt_write().

#define ast_frame_byteswap_be fr   )     do { struct ast_frame *__f = (fr); ast_swapcopy_samples(__f->data, __f->data, __f->samples); } while(0)
 

Definition at line 364 of file frame.h.

Referenced by ast_rtp_read(), and socket_read().

#define ast_frame_byteswap_le fr   )     do { ; } while(0)
 

Definition at line 363 of file frame.h.

Referenced by phone_read().

#define AST_FRAME_CNG   10
 

Comfort Noise frame (subclass is level of CNG in -dBov), body may include zero or more 8-bit quantization coefficients

Definition at line 147 of file frame.h.

Referenced by ast_read(), ast_translate(), calc_timestamp(), lintospeex_frameout(), process_rfc3389(), and schedule_delivery().

#define AST_FRAME_CONTROL   4
 

A control frame, subclass is AST_CONTROL_*

Definition at line 134 of file frame.h.

Referenced by __ast_request_and_dial(), agent_read(), alsa_call(), aopen_handle_escape(), app_exec(), ast_bridge_call(), ast_dsp_process(), ast_feature_request_and_dial(), ast_frame_dump(), ast_generic_bridge(), ast_queue_control(), ast_queue_frame(), ast_queue_hangup(), ast_read(), ast_recvtext(), ast_rtp_bridge(), ast_waitfordigit_full(), ast_write(), async_wait(), attempt_transmit(), auto_congest(), bestdata_handle_escape(), console_answer(), console_flash(), console_sendtext(), disa_exec(), do_parking_thread(), handle_request_info(), i4l_handle_escape(), iax2_answer(), iax2_bridge(), iax2_indicate(), iax2_setoption(), iax_showframe(), local_answer(), local_hangup(), local_indicate(), mgcp_queue_control(), misdn_bridge(), modem_mini_packet(), monitor_handle_owned(), oss_call(), phone_exception(), receive_dtmf_digits(), rpt(), rpt_exec(), send_dtmf(), socket_read(), ss_thread(), wait_for_answer(), waitforring_exec(), zt_bridge(), zt_handle_event(), and zt_read().

#define AST_FRAME_DTMF   1
 

A DTMF digit, subclass is the digit

Definition at line 128 of file frame.h.

Referenced by __adsi_transmit_messages(), action_zapdialoffhook(), agent_ack_sleep(), agent_read(), app_exec(), ast_app_getvoice(), ast_bridge_call(), ast_dsp_process(), ast_dtmf_stream(), ast_feature_request_and_dial(), ast_frame_dump(), ast_generic_bridge(), ast_play_and_prepend(), ast_play_and_record_full(), ast_read(), ast_rtp_bridge(), ast_waitfordigit(), ast_waitfordigit_full(), ast_write(), background_detect_exec(), bestdata_handle_escape(), cb_events(), channel_spy(), conf_exec(), conf_run(), console_dial(), dictate_exec(), disa_exec(), do_chanreads(), do_immediate_setup(), echo_exec(), handle_message(), handle_recordfile(), handle_request(), handle_request_info(), i4l_handle_escape(), i4l_read(), iax2_bridge(), iax2_digit(), iax_showframe(), local_digit(), mgcp_rtp_read(), misdn_tx2ast_frm(), monitor_handle_owned(), mp3_exec(), NBScat_exec(), oh323_rtp_read(), phone_exception(), receive_dtmf_digits(), record_exec(), rpt(), rpt_call(), rpt_exec(), send_digit(), send_dtmf(), send_waveform_to_channel(), sip_rtp_read(), ss_thread(), vpb_bridge(), wait_for_answer(), zt_bridge(), zt_handle_event(), and zt_read().

#define AST_FRAME_HTML   9
 

HTML Frame

Definition at line 144 of file frame.h.

Referenced by ast_frame_dump(), ast_generic_bridge(), ast_write(), iax2_sendhtml(), local_sendhtml(), sendurl_exec(), and wait_for_answer().

#define AST_FRAME_IAX   6
 

Inter Asterisk Exchange private frame type

Definition at line 138 of file frame.h.

Referenced by ast_frame_dump(), attempt_transmit(), auth_reject(), authenticate_reply(), authenticate_request(), auto_hangup(), cache_get_callno_locked(), calc_timestamp(), dp_lookup(), iax2_call(), iax2_do_register(), iax2_dprequest(), iax2_hangup(), iax2_poke_peer(), iax2_provision(), iax2_send(), iax2_start_transfer(), iax2_transfer(), iax2_vnak(), iax_showframe(), raw_hangup(), registry_authrequest(), registry_rerequest(), send_lagrq(), send_ping(), socket_read(), try_transfer(), and update_registry().

#define AST_FRAME_IMAGE   8
 

Image Frames

Definition at line 142 of file frame.h.

Referenced by ast_frame_dump(), ast_generic_bridge(), iax2_bridge(), iax2_sendimage(), jpeg_read_image(), jpeg_write_image(), mgcp_write(), nbs_xwrite(), oh323_write(), phone_read(), phone_write(), sip_write(), skinny_write(), wait_for_answer(), and zt_write().

#define AST_FRAME_NULL   5
 

An empty, useless frame

Definition at line 136 of file frame.h.

Referenced by __zt_exception(), agent_new(), agent_read(), alsa_read(), aopen_handle_escape(), ast_channel_masquerade(), ast_channel_setwhentohangup(), ast_do_masquerade(), ast_dsp_process(), ast_frame_dump(), ast_read(), ast_rtcp_read(), ast_rtp_read(), ast_softhangup_nolock(), bestdata_handle_escape(), do_chanreads(), features_read(), handle_request_invite(), handle_response_invite(), i4l_handle_escape(), i4l_read(), iax2_read(), iax2_write(), local_read(), mgcp_rtp_read(), misdn_tx2ast_frm(), monitor_handle_owned(), oh323_rtp_read(), oss_read(), phone_exception(), phone_read(), process_sdp(), send_dtmf(), sip_rtp_read(), socket_read(), vpb_read(), wakeup_sub(), zt_handle_event(), and zt_read().

#define AST_FRAME_T38   11
 

T.38 Fax-over-IP data stream

Definition at line 149 of file frame.h.

#define AST_FRAME_TEXT   7
 

Text messages

Definition at line 140 of file frame.h.

Referenced by ast_feature_request_and_dial(), ast_frame_dump(), ast_generic_bridge(), ast_recvtext(), ast_write(), console_sendtext(), function_ilink(), handle_link_data(), iax2_bridge(), iax2_sendtext(), receive_message(), rpt(), rpt_exec(), send_link_dtmf(), wait_for_answer(), and zt_read().

#define AST_FRAME_VIDEO   3
 

Video frame, maybe?? :)

Definition at line 132 of file frame.h.

Referenced by ast_frame_dump(), ast_generic_bridge(), ast_play_and_prepend(), ast_play_and_record_full(), ast_rtp_bridge(), ast_rtp_read(), ast_rtp_write(), ast_write(), ast_writestream(), decode_frame(), echo_exec(), h263_open(), h263_read(), h263_write(), handle_recordfile(), iax2_bridge(), iax2_send(), phone_read(), record_exec(), sip_write(), socket_read(), and vpb_bridge().

#define AST_FRAME_VOICE   2
 

Voice data, subclass is AST_FORMAT_*

Definition at line 130 of file frame.h.

Referenced by __ast_smoother_feed(), adpcmtolin_frameout(), adpcmtolin_sample(), adsi_careful_send(), agent_read(), agent_write(), alawtolin_frameout(), alawtolin_sample(), alawtoulaw_frameout(), alawtoulaw_sample(), alsa_read(), aopen_read(), ast_app_getvoice(), ast_channel_spy_read_frame(), ast_dsp_call_progress(), ast_dsp_digitdetect(), ast_dsp_process(), ast_dsp_silence(), ast_frame_adjust_volume(), ast_frame_dump(), ast_frame_slinear_sum(), ast_generic_bridge(), ast_play_and_prepend(), ast_play_and_record_full(), ast_prod(), ast_queue_frame(), ast_read(), ast_rtp_bridge(), ast_rtp_read(), ast_rtp_write(), ast_smoother_read(), ast_waitfordigit_full(), ast_waitstream_full(), ast_write(), ast_writestream(), au_open(), au_read(), au_write(), background_detect_exec(), bestdata_read(), calc_timestamp(), conf_run(), dictate_exec(), disa_exec(), do_chanreads(), do_waiting(), echo_exec(), g723_open(), g723_write(), g723tolin_frameout(), g723tolin_sample(), g726_16_open(), g726_24_open(), g726_32_open(), g726_40_open(), g726_read(), g726_write(), g726tolin_frameout(), g726tolin_sample(), g729_open(), g729_read(), g729_write(), get_from_jb(), gsm_open(), gsm_read(), gsm_write(), gsmtolin_frameout(), gsmtolin_sample(), handle_recordfile(), i4l_read(), i4l_write(), iax2_bridge(), iax2_send(), iax2_write(), iax_frame_wrap(), ices_exec(), ilbc_open(), ilbc_read(), ilbc_write(), ilbctolin_frameout(), ilbctolin_sample(), linear_generator(), lintoadpcm_frameout(), lintoadpcm_sample(), lintoalaw_frameout(), lintoalaw_sample(), lintog723_frameout(), lintog723_sample(), lintog726_frameout(), lintog726_sample(), lintogsm_frameout(), lintogsm_sample(), lintoilbc_frameout(), lintoilbc_sample(), lintolpc10_frameout(), lintolpc10_sample(), lintospeex_frameout(), lintospeex_sample(), lintoulaw_frameout(), lintoulaw_sample(), local_write(), lpc10tolin_frameout(), lpc10tolin_sample(), measurenoise(), mgcp_rtp_read(), mgcp_write(), milliwatt_generate(), misdn_read(), misdn_tx2ast_frm(), moh_generate(), mp3_exec(), nbs_xwrite(), NBScat_exec(), ogg_vorbis_read(), ogg_vorbis_write(), oh323_rtp_read(), oh323_write(), oss_read(), pcm_open(), pcm_read(), pcm_write(), phone_read(), phone_write(), playtones_generator(), record_exec(), recordthread(), rpt(), rpt_exec(), run_agi(), schedule_delivery(), send_tone_burst(), send_waveform_to_channel(), silence_generator_generate(), sip_rtp_read(), sip_write(), skinny_rtp_read(), skinny_write(), slinear_open(), slinear_read(), slinear_write(), sms_exec(), sms_generate(), socket_read(), speextolin_frameout(), speextolin_sample(), tonepair_generator(), ulawtoalaw_frameout(), ulawtoalaw_sample(), ulawtolin_frameout(), ulawtolin_sample(), vox_open(), vox_read(), vox_write(), vpb_bridge(), vpb_write(), wait_for_answer(), wav_open(), wav_read(), wav_write(), zt_read(), and zt_write().

#define AST_FRIENDLY_OFFSET   64
 

Definition at line 114 of file frame.h.

Referenced by adpcmtolin_frameout(), alawtolin_frameout(), alawtoulaw_frameout(), alsa_read(), aopen_read(), ast_frisolate(), ast_prod(), ast_rtp_read(), ast_smoother_read(), au_read(), bestdata_read(), conf_run(), do_chanreads(), g723_read(), g723tolin_frameout(), g726_read(), g726tolin_frameout(), g729_read(), get_from_jb(), gsm_read(), gsmtolin_frameout(), h263_read(), i4l_read(), iax_frame_wrap(), ilbc_read(), ilbctolin_frameout(), linear_generator(), lintoadpcm_frameout(), lintoalaw_frameout(), lintog723_frameout(), lintog726_frameout(), lintogsm_frameout(), lintoilbc_frameout(), lintolpc10_frameout(), lintospeex_frameout(), lintoulaw_frameout(), lpc10tolin_frameout(), milliwatt_generate(), moh_generate(), mp3_exec(), NBScat_exec(), ogg_vorbis_read(), oss_read(), pcm_read(), phone_read(), playtones_generator(), process_rfc3389(), send_tone_burst(), send_waveform_to_channel(), slinear_read(), sms_generate(), speextolin_frameout(), tonepair_generator(), ulawtoalaw_frameout(), ulawtolin_frameout(), vox_read(), wav_read(), and zt_read().

#define AST_HTML_BEGIN   4
 

Beginning frame

Definition at line 157 of file frame.h.

Referenced by ast_frame_dump().

#define AST_HTML_DATA   2
 

Data frame

Definition at line 155 of file frame.h.

Referenced by ast_frame_dump().

#define AST_HTML_END   8
 

End frame

Definition at line 159 of file frame.h.

Referenced by ast_frame_dump().

#define AST_HTML_LDCOMPLETE   16
 

Load is complete

Definition at line 161 of file frame.h.

Referenced by ast_frame_dump(), and sendurl_exec().

#define AST_HTML_LINKREJECT   20
 

Reject link request

Definition at line 169 of file frame.h.

Referenced by ast_frame_dump().

#define AST_HTML_LINKURL   18
 

Send URL, and track

Definition at line 165 of file frame.h.

Referenced by ast_frame_dump().

#define AST_HTML_NOSUPPORT   17
 

Peer is unable to support HTML

Definition at line 163 of file frame.h.

Referenced by ast_frame_dump(), and sendurl_exec().

#define AST_HTML_UNLINK   19
 

No more HTML linkage

Definition at line 167 of file frame.h.

Referenced by ast_frame_dump().

#define AST_HTML_URL   1
 

Sending a URL

Definition at line 153 of file frame.h.

Referenced by ast_channel_sendurl(), and ast_frame_dump().

#define AST_MALLOCD_DATA   (1 << 1)
 

Need the data be free'd?

Definition at line 122 of file frame.h.

Referenced by ast_frfree(), and ast_frisolate().

#define AST_MALLOCD_HDR   (1 << 0)
 

Need the header be free'd?

Definition at line 120 of file frame.h.

Referenced by ast_frdup(), ast_frfree(), and ast_frisolate().

#define AST_MALLOCD_SRC   (1 << 2)
 

Need the source be free'd? (haha!)

Definition at line 124 of file frame.h.

Referenced by ast_frfree(), and ast_frisolate().

#define AST_MIN_OFFSET   32
 

Definition at line 117 of file frame.h.

Referenced by __ast_smoother_feed().

#define AST_OPTION_AUDIO_MODE   4
 

Set (or clear) Audio (Not-Clear) Mode

Definition at line 268 of file frame.h.

Referenced by zt_hangup(), and zt_setoption().

#define AST_OPTION_FLAG_ACCEPT   1
 

Definition at line 251 of file frame.h.

#define AST_OPTION_FLAG_ANSWER   5
 

Definition at line 254 of file frame.h.

#define AST_OPTION_FLAG_QUERY   4
 

Definition at line 253 of file frame.h.

#define AST_OPTION_FLAG_REJECT   2
 

Definition at line 252 of file frame.h.

#define AST_OPTION_FLAG_REQUEST   0
 

Definition at line 250 of file frame.h.

Referenced by ast_bridge_call(), and iax2_setoption().

#define AST_OPTION_FLAG_WTF   6
 

Definition at line 255 of file frame.h.

#define AST_OPTION_RELAXDTMF   3
 

Relax the parameters for DTMF reception (mainly for radio use)

Definition at line 265 of file frame.h.

Referenced by rpt(), and zt_setoption().

#define AST_OPTION_RXGAIN   6
 

Set channel receive gain Option data is a single signed char representing number of decibels (dB) to set gain to (on top of any gain specified in channel driver)

Definition at line 284 of file frame.h.

Referenced by iax2_setoption(), play_record_review(), reset_volumes(), set_talk_volume(), vm_forwardoptions(), and zt_setoption().

#define AST_OPTION_TDD   2
 

Put a compatible channel into TDD (TTY for the hearing-impared) mode

Definition at line 262 of file frame.h.

Referenced by handle_tddmode(), zt_hangup(), and zt_setoption().

#define AST_OPTION_TONE_VERIFY   1
 

Verify touchtones by muting audio transmission (and reception) and verify the tone is still present

Definition at line 259 of file frame.h.

Referenced by conf_run(), rpt(), try_calling(), zt_hangup(), and zt_setoption().

#define AST_OPTION_TXGAIN   5
 

Set channel transmit gain Option data is a single signed char representing number of decibels (dB) to set gain to (on top of any gain specified in channel driver)

Definition at line 276 of file frame.h.

Referenced by chanspy_exec(), iax2_setoption(), reset_volumes(), set_listen_volume(), set_volume(), and zt_setoption().

#define ast_smoother_feed s,
 )     __ast_smoother_feed(s, f, 0)
 

Definition at line 412 of file frame.h.

Referenced by ast_rtp_write().

#define ast_smoother_feed_be s,
 )     __ast_smoother_feed(s, f, 1)
 

Definition at line 414 of file frame.h.

Referenced by ast_rtp_write().

#define ast_smoother_feed_le s,
 )     __ast_smoother_feed(s, f, 0)
 

Definition at line 415 of file frame.h.

#define AST_SMOOTHER_FLAG_G729   (1 << 0)
 

Definition at line 247 of file frame.h.

Referenced by __ast_smoother_feed(), ast_rtp_write(), and ast_smoother_read().


Function Documentation

int __ast_smoother_feed struct ast_smoother s,
struct ast_frame f,
int  swap
 

Definition at line 137 of file frame.c.

References AST_FRAME_VOICE, ast_log(), AST_MIN_OFFSET, AST_SMOOTHER_FLAG_G729, ast_swapcopy_samples(), ast_frame::data, ast_smoother::data, ast_frame::datalen, ast_smoother::delivery, ast_frame::delivery, ast_smoother::flags, ast_smoother::format, ast_frame::frametype, ast_smoother::len, LOG_NOTICE, LOG_WARNING, ast_frame::offset, ast_smoother::opt, ast_smoother::optimizablestream, ast_frame::samples, ast_smoother::samplesperbyte, ast_smoother::size, SMOOTHER_SIZE, and ast_frame::subclass.

00138 {
00139    if (f->frametype != AST_FRAME_VOICE) {
00140       ast_log(LOG_WARNING, "Huh?  Can't smooth a non-voice frame!\n");
00141       return -1;
00142    }
00143    if (!s->format) {
00144       s->format = f->subclass;
00145       s->samplesperbyte = (float)f->samples / (float)f->datalen;
00146    } else if (s->format != f->subclass) {
00147       ast_log(LOG_WARNING, "Smoother was working on %d format frames, now trying to feed %d?\n", s->format, f->subclass);
00148       return -1;
00149    }
00150    if (s->len + f->datalen > SMOOTHER_SIZE) {
00151       ast_log(LOG_WARNING, "Out of smoother space\n");
00152       return -1;
00153    }
00154    if (((f->datalen == s->size) || ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729)))
00155              && !s->opt && (f->offset >= AST_MIN_OFFSET)) {
00156       if (!s->len) {
00157          /* Optimize by sending the frame we just got
00158             on the next read, thus eliminating the douple
00159             copy */
00160          s->opt = f;
00161          return 0;
00162       } else {
00163          s->optimizablestream++;
00164          if (s->optimizablestream > 10) {
00165             /* For the past 10 rounds, we have input and output
00166                frames of the correct size for this smoother, yet
00167                we were unable to optimize because there was still
00168                some cruft left over.  Lets just drop the cruft so
00169                we can move to a fully optimized path */
00170             s->len = 0;
00171             s->opt = f;
00172             return 0;
00173          }
00174       }
00175    } else 
00176       s->optimizablestream = 0;
00177    if (s->flags & AST_SMOOTHER_FLAG_G729) {
00178       if (s->len % 10) {
00179          ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n");
00180          return 0;
00181       }
00182    }
00183    if (swap)
00184       ast_swapcopy_samples(s->data+s->len, f->data, f->samples);
00185    else
00186       memcpy(s->data + s->len, f->data, f->datalen);
00187    /* If either side is empty, reset the delivery time */
00188    if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery))   /* XXX really ? */
00189       s->delivery = f->delivery;
00190    s->len += f->datalen;
00191    return 0;
00192 }

char* ast_codec2str int  codec  ) 
 

Get a name from a format Gets a name from a format.

Parameters:
codec codec number (1,2,4,8,16,etc.)
Returns:
This returns a static string identifying the format on success, 0 on error.

Definition at line 586 of file frame.c.

Referenced by moh_alloc(), show_codec_n(), and show_codecs().

00586                                {
00587    int x = 0;
00588    char *ret = "unknown";
00589    for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) {
00590       if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == codec) {
00591          ret = AST_FORMAT_LIST[x].desc;
00592          break;
00593       }
00594    }
00595    return ret;
00596 }

int ast_codec_choose struct ast_codec_pref pref,
int  formats,
int  find_best
 

Select the best format according to preference list from supplied options. If "find_best" is non-zero then if nothing is found, the "Best" format of the format list is selected, otherwise 0 is returned.

Definition at line 1000 of file frame.c.

References ast_best_codec(), ast_format_list::bits, and ast_codec_pref::order.

Referenced by process_sdp(), sip_new(), and socket_read().

01001 {
01002    size_t size = 0;
01003    int x = 0, ret = 0, slot = 0;
01004 
01005    size = sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list);
01006    for (x = 0; x < size; x++) {
01007       slot = pref->order[x];
01008 
01009       if(!slot)
01010          break;
01011       if ( formats & AST_FORMAT_LIST[slot-1].bits ) {
01012          ret = AST_FORMAT_LIST[slot-1].bits;
01013          break;
01014       }
01015    }
01016    if(ret)
01017       return ret;
01018 
01019       return find_best ? ast_best_codec(formats) : 0;
01020 }

int ast_codec_get_len int  format,
int  samples
 

Returns the number of bytes for the number of samples of the given format.

Definition at line 1241 of file frame.c.

References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_G726, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_SLINEAR, AST_FORMAT_ULAW, ast_getformatname(), ast_log(), and LOG_WARNING.

Referenced by ast_channel_spy_read_frame(), copy_data_from_queue(), moh_generate(), and monmp3thread().

01242 {
01243    int len = 0;
01244 
01245    /* XXX Still need speex, g723, and lpc10 XXX */ 
01246    switch(format) {
01247    case AST_FORMAT_ILBC:
01248       len = (samples / 240) * 50;
01249       break;
01250    case AST_FORMAT_GSM:
01251       len = (samples / 160) * 33;
01252       break;
01253    case AST_FORMAT_G729A:
01254       len = samples / 8;
01255       break;
01256    case AST_FORMAT_SLINEAR:
01257       len = samples * 2;
01258       break;
01259    case AST_FORMAT_ULAW:
01260    case AST_FORMAT_ALAW:
01261       len = samples;
01262       break;
01263    case AST_FORMAT_ADPCM:
01264    case AST_FORMAT_G726:
01265       len = samples / 2;
01266       break;
01267    default:
01268       ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format));
01269    }
01270 
01271    return len;
01272 }

int ast_codec_get_samples struct ast_frame f  ) 
 

Returns the number of samples contained in the frame.

Definition at line 1200 of file frame.c.

References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_LPC10, AST_FORMAT_SLINEAR, AST_FORMAT_SPEEX, AST_FORMAT_ULAW, ast_getformatname(), ast_log(), ast_frame::data, ast_frame::datalen, g723_samples(), LOG_WARNING, speex_samples(), and ast_frame::subclass.

Referenced by ast_rtp_read(), moh_generate(), schedule_delivery(), and socket_read().

01201 {
01202    int samples=0;
01203    switch(f->subclass) {
01204    case AST_FORMAT_SPEEX:
01205       samples = speex_samples(f->data, f->datalen);
01206       break;
01207    case AST_FORMAT_G723_1:
01208                 samples = g723_samples(f->data, f->datalen);
01209       break;
01210    case AST_FORMAT_ILBC:
01211       samples = 240 * (f->datalen / 50);
01212       break;
01213    case AST_FORMAT_GSM:
01214       samples = 160 * (f->datalen / 33);
01215       break;
01216    case AST_FORMAT_G729A:
01217       samples = f->datalen * 8;
01218       break;
01219    case AST_FORMAT_SLINEAR:
01220       samples = f->datalen / 2;
01221       break;
01222    case AST_FORMAT_LPC10:
01223                 /* assumes that the RTP packet contains one LPC10 frame */
01224       samples = 22 * 8;
01225       samples += (((char *)(f->data))[7] & 0x1) * 8;
01226       break;
01227    case AST_FORMAT_ULAW:
01228    case AST_FORMAT_ALAW:
01229       samples = f->datalen;
01230       break;
01231    case AST_FORMAT_ADPCM:
01232    case AST_FORMAT_G726:
01233       samples = f->datalen * 2;
01234       break;
01235    default:
01236       ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname(f->subclass));
01237    }
01238    return samples;
01239 }

static int ast_codec_interp_len int  format  )  [inline, static]
 

Gets duration in ms of interpolation frame for a format.

Definition at line 456 of file frame.h.

References AST_FORMAT_ILBC.

Referenced by get_from_jb().

00457 { 
00458    return (format == AST_FORMAT_ILBC) ? 30 : 20;
00459 }

int ast_codec_pref_append struct ast_codec_pref pref,
int  format
 

Append a codec to a preference list, removing it first if it was already there.

Definition at line 971 of file frame.c.

References ast_codec_pref_remove(), ast_format_list::bits, and ast_codec_pref::order.

Referenced by ast_parse_allow_disallow().

00972 {
00973    size_t size = 0;
00974    int x = 0, newindex = -1;
00975 
00976    ast_codec_pref_remove(pref, format);
00977    size = sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list);
00978 
00979    for (x = 0; x < size; x++) {
00980       if(AST_FORMAT_LIST[x].bits == format) {
00981          newindex = x + 1;
00982          break;
00983       }
00984    }
00985 
00986    if(newindex) {
00987       for (x = 0; x < size; x++) {
00988          if(!pref->order[x]) {
00989             pref->order[x] = newindex;
00990             break;
00991          }
00992       }
00993    }
00994 
00995    return x;
00996 }

void ast_codec_pref_convert struct ast_codec_pref pref,
char *  buf,
size_t  size,
int  right
 

Shift a codec preference list up or down 65 bytes so that it becomes an ASCII string.

Definition at line 874 of file frame.c.

References ast_codec_pref::order.

Referenced by check_access(), create_addr(), dump_prefs(), and socket_read().

00875 {
00876    int x = 0, differential = (int) 'A', mem = 0;
00877    char *from = NULL, *to = NULL;
00878 
00879    if(right) {
00880       from = pref->order;
00881       to = buf;
00882       mem = size;
00883    } else {
00884       to = pref->order;
00885       from = buf;
00886       mem = 32;
00887    }
00888 
00889    memset(to, 0, mem);
00890    for (x = 0; x < 32 ; x++) {
00891       if(!from[x])
00892          break;
00893       to[x] = right ? (from[x] + differential) : (from[x] - differential);
00894    }
00895 }

int ast_codec_pref_index struct ast_codec_pref pref,
int  index
 

Codec located at a particular place in the preference index.

Definition at line 932 of file frame.c.

References ast_format_list::bits, and ast_codec_pref::order.

Referenced by _sip_show_peer(), add_sdp(), ast_codec_pref_string(), function_iaxpeer(), function_sippeer(), iax2_show_peer(), print_codec_to_cli(), sip_show_user(), and socket_read().

00933 {
00934    int slot = 0;
00935 
00936    
00937    if((index >= 0) && (index < sizeof(pref->order))) {
00938       slot = pref->order[index];
00939    }
00940 
00941    return slot ? AST_FORMAT_LIST[slot-1].bits : 0;
00942 }

void ast_codec_pref_init struct ast_codec_pref pref  ) 
 

Initialize a codec preference to "no preference".

void ast_codec_pref_remove struct ast_codec_pref pref,
int  format
 

Remove a codec from a preference list.

Definition at line 945 of file frame.c.

References ast_format_list::bits, and ast_codec_pref::order.

Referenced by ast_codec_pref_append(), and ast_parse_allow_disallow().

00946 {
00947    struct ast_codec_pref oldorder;
00948    int x=0, y=0;
00949    size_t size = 0;
00950    int slot = 0;
00951 
00952    if(!pref->order[0])
00953       return;
00954 
00955    size = sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list);
00956 
00957    memcpy(&oldorder,pref,sizeof(struct ast_codec_pref));
00958    memset(pref,0,sizeof(struct ast_codec_pref));
00959 
00960    for (x = 0; x < size; x++) {
00961       slot = oldorder.order[x];
00962       if(! slot)
00963          break;
00964       if(AST_FORMAT_LIST[slot-1].bits != format)
00965          pref->order[y++] = slot;
00966    }
00967    
00968 }

int ast_codec_pref_string struct ast_codec_pref pref,
char *  buf,
size_t  size
 

Dump codec preference list into a string.

Definition at line 897 of file frame.c.

References ast_codec_pref_index(), and ast_getformatname().

Referenced by dump_prefs(), and socket_read().

00898 {
00899    int x = 0, codec = 0; 
00900    size_t total_len = 0, slen = 0;
00901    char *formatname = 0;
00902    
00903    memset(buf,0,size);
00904    total_len = size;
00905    buf[0] = '(';
00906    total_len--;
00907    for(x = 0; x < 32 ; x++) {
00908       if(total_len <= 0)
00909          break;
00910       if(!(codec = ast_codec_pref_index(pref,x)))
00911          break;
00912       if((formatname = ast_getformatname(codec))) {
00913          slen = strlen(formatname);
00914          if(slen > total_len)
00915             break;
00916          strncat(buf,formatname,total_len);
00917          total_len -= slen;
00918       }
00919       if(total_len && x < 31 && ast_codec_pref_index(pref , x + 1)) {
00920          strncat(buf,"|",total_len);
00921          total_len--;
00922       }
00923    }
00924    if(total_len) {
00925       strncat(buf,")",total_len);
00926       total_len--;
00927    }
00928 
00929    return size - total_len;
00930 }

int ast_fr_fdhangup int  fd  ) 
 

Sends a hangup to an fd Send a hangup (NULL equivalent) on an fd.

Parameters:
fd fd to write to
Returns:
Returns 0 on success, -1 on failure

struct ast_frame* ast_fr_fdread int  fd  ) 
 

Reads a frame from an fd Read a frame from a stream or packet fd, as written by fd_write.

Parameters:
fd an opened fd to read from
Returns:
returns a frame on success, NULL on error

int ast_fr_fdwrite int  fd,
struct ast_frame frame
 

Writes a frame to an fd Write a frame to an fd

Parameters:
fd Which fd to write to
frame frame to write to the fd
Returns:
Returns 0 on success, -1 on failure

int ast_frame_adjust_volume struct ast_frame f,
int  adjustment
 

Adjusts the volume of the audio samples contained in a frame.

Parameters:
f The frame containing the samples (must be AST_FRAME_VOICE and AST_FORMAT_SLINEAR)
adjustment The number of dB to adjust up or down.
Returns:
0 for success, non-zero for an error

Definition at line 1274 of file frame.c.

References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_slinear_saturated_divide(), ast_slinear_saturated_multiply(), ast_frame::data, ast_frame::frametype, and ast_frame::subclass.

Referenced by ast_channel_spy_read_frame(), and conf_run().

01275 {
01276    int count;
01277    short *fdata = f->data;
01278    short adjust_value = abs(adjustment);
01279 
01280    if ((f->frametype != AST_FRAME_VOICE) || (f->subclass != AST_FORMAT_SLINEAR))
01281       return -1;
01282 
01283    if (!adjustment)
01284       return 0;
01285 
01286    for (count = 0; count < f->samples; count++) {
01287       if (adjustment > 0) {
01288          ast_slinear_saturated_multiply(&fdata[count], &adjust_value);
01289       } else if (adjustment < 0) {
01290          ast_slinear_saturated_divide(&fdata[count], &adjust_value);
01291       }
01292    }
01293 
01294    return 0;
01295 }

void ast_frame_dump char *  name,
struct ast_frame f,
char *  prefix
 

Dump a frame for debugging purposes

Definition at line 673 of file frame.c.

References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_TAKEOFFHOOK, AST_CONTROL_WINK, AST_FRAME_CONTROL, AST_FRAME_DTMF, AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_IMAGE, AST_FRAME_NULL, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_getformatname(), AST_HTML_BEGIN, AST_HTML_DATA, AST_HTML_END, AST_HTML_LDCOMPLETE, AST_HTML_LINKREJECT, AST_HTML_LINKURL, AST_HTML_NOSUPPORT, AST_HTML_UNLINK, AST_HTML_URL, ast_strlen_zero(), ast_verbose(), COLOR_BLACK, COLOR_BRCYAN, COLOR_BRGREEN, COLOR_BRMAGENTA, COLOR_BRRED, COLOR_YELLOW, ast_frame::data, ast_frame::frametype, n, ast_frame::subclass, and term_color().

Referenced by ast_read(), and ast_write().

00674 {
00675    char *n = "unknown";
00676    char ftype[40] = "Unknown Frametype";
00677    char cft[80];
00678    char subclass[40] = "Unknown Subclass";
00679    char csub[80];
00680    char moreinfo[40] = "";
00681    char cn[60];
00682    char cp[40];
00683    char cmn[40];
00684    if (name)
00685       n = name;
00686    if (!f) {
00687       ast_verbose("%s [ %s (NULL) ] [%s]\n", 
00688          term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
00689          term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 
00690          term_color(cn, n, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
00691       return;
00692    }
00693    /* XXX We should probably print one each of voice and video when the format changes XXX */
00694    if (f->frametype == AST_FRAME_VOICE)
00695       return;
00696    if (f->frametype == AST_FRAME_VIDEO)
00697       return;
00698    switch(f->frametype) {
00699    case AST_FRAME_DTMF:
00700       strcpy(ftype, "DTMF");
00701       subclass[0] = f->subclass;
00702       subclass[1] = '\0';
00703       break;
00704    case AST_FRAME_CONTROL:
00705       strcpy(ftype, "Control");
00706       switch(f->subclass) {
00707       case AST_CONTROL_HANGUP:
00708          strcpy(subclass, "Hangup");
00709          break;
00710       case AST_CONTROL_RING:
00711          strcpy(subclass, "Ring");
00712          break;
00713       case AST_CONTROL_RINGING:
00714          strcpy(subclass, "Ringing");
00715          break;
00716       case AST_CONTROL_ANSWER:
00717          strcpy(subclass, "Answer");
00718          break;
00719       case AST_CONTROL_BUSY:
00720          strcpy(subclass, "Busy");
00721          break;
00722       case AST_CONTROL_TAKEOFFHOOK:
00723          strcpy(subclass, "Take Off Hook");
00724          break;
00725       case AST_CONTROL_OFFHOOK:
00726          strcpy(subclass, "Line Off Hook");
00727          break;
00728       case AST_CONTROL_CONGESTION:
00729          strcpy(subclass, "Congestion");
00730          break;
00731       case AST_CONTROL_FLASH:
00732          strcpy(subclass, "Flash");
00733          break;
00734       case AST_CONTROL_WINK:
00735          strcpy(subclass, "Wink");
00736          break;
00737       case AST_CONTROL_OPTION:
00738          strcpy(subclass, "Option");
00739          break;
00740       case AST_CONTROL_RADIO_KEY:
00741          strcpy(subclass, "Key Radio");
00742          break;
00743       case AST_CONTROL_RADIO_UNKEY:
00744          strcpy(subclass, "Unkey Radio");
00745          break;
00746       case -1:
00747          strcpy(subclass, "Stop generators");
00748          break;
00749       default:
00750          snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass);
00751       }
00752       break;
00753    case AST_FRAME_NULL:
00754       strcpy(ftype, "Null Frame");
00755       strcpy(subclass, "N/A");
00756       break;
00757    case AST_FRAME_IAX:
00758       /* Should never happen */
00759       strcpy(ftype, "IAX Specific");
00760       snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass);
00761       break;
00762    case AST_FRAME_TEXT:
00763       strcpy(ftype, "Text");
00764       strcpy(subclass, "N/A");
00765       ast_copy_string(moreinfo, f->data, sizeof(moreinfo));
00766       break;
00767    case AST_FRAME_IMAGE:
00768       strcpy(ftype, "Image");
00769       snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass));
00770       break;
00771    case AST_FRAME_HTML:
00772       strcpy(ftype, "HTML");
00773       switch(f->subclass) {
00774       case AST_HTML_URL:
00775          strcpy(subclass, "URL");
00776          ast_copy_string(moreinfo, f->data, sizeof(moreinfo));
00777          break;
00778       case AST_HTML_DATA:
00779          strcpy(subclass, "Data");
00780          break;
00781       case AST_HTML_BEGIN:
00782          strcpy(subclass, "Begin");
00783          break;
00784       case AST_HTML_END:
00785          strcpy(subclass, "End");
00786          break;
00787       case AST_HTML_LDCOMPLETE:
00788          strcpy(subclass, "Load Complete");
00789          break;
00790       case AST_HTML_NOSUPPORT:
00791          strcpy(subclass, "No Support");
00792          break;
00793       case AST_HTML_LINKURL:
00794          strcpy(subclass, "Link URL");
00795          ast_copy_string(moreinfo, f->data, sizeof(moreinfo));
00796          break;
00797       case AST_HTML_UNLINK:
00798          strcpy(subclass, "Unlink");
00799          break;
00800       case AST_HTML_LINKREJECT:
00801          strcpy(subclass, "Link Reject");
00802          break;
00803       default:
00804          snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass);
00805          break;
00806       }
00807       break;
00808    default:
00809       snprintf(ftype, sizeof(ftype), "Unknown Frametype '%d'", f->frametype);
00810    }
00811    if (!ast_strlen_zero(moreinfo))
00812       ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) '%s' ] [%s]\n",  
00813          term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
00814          term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
00815          f->frametype, 
00816          term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)),
00817          f->subclass, 
00818          term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)),
00819          term_color(cn, n, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
00820    else
00821       ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) ] [%s]\n",  
00822          term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
00823          term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
00824          f->frametype, 
00825          term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)),
00826          f->subclass, 
00827          term_color(cn, n, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
00828 
00829 }

int ast_frame_slinear_sum struct ast_frame f1,
struct ast_frame f2
 

Sums two frames of audio samples.

Parameters:
f1 The first frame (which will contain the result)
f2 The second frame
Returns:
0 for success, non-zero for an error
The frames must be AST_FRAME_VOICE and must contain AST_FORMAT_SLINEAR samples, and must contain the same number of samples.

Definition at line 1297 of file frame.c.

References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_slinear_saturated_add(), ast_frame::data, ast_frame::frametype, ast_frame::samples, and ast_frame::subclass.

Referenced by ast_channel_spy_read_frame().

01298 {
01299    int count;
01300    short *data1, *data2;
01301 
01302    if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass != AST_FORMAT_SLINEAR))
01303       return -1;
01304 
01305    if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass != AST_FORMAT_SLINEAR))
01306       return -1;
01307 
01308    if (f1->samples != f2->samples)
01309       return -1;
01310 
01311    for (count = 0, data1 = f1->data, data2 = f2->data;
01312         count < f1->samples;
01313         count++, data1++, data2++)
01314       ast_slinear_saturated_add(data1, data2);
01315 
01316    return 0;
01317 }

struct ast_frame* ast_frdup struct ast_frame fr  ) 
 

Copies a frame.

Parameters:
fr frame to copy Dupliates a frame -- should only rarely be used, typically frisolate is good enough
Returns:
Returns a frame on success, NULL on error

Definition at line 361 of file frame.c.

References AST_MALLOCD_HDR, ast_frame::data, ast_frame::datalen, ast_frame::delivery, ast_frame::frametype, malloc, ast_frame::mallocd, ast_frame::next, ast_frame::offset, ast_frame::prev, ast_frame::samples, ast_frame::src, and ast_frame::subclass.

Referenced by ast_channel_spy_read_frame(), ast_queue_frame(), ast_rtp_write(), ast_slinfactory_feed(), and queue_frame_to_spies().

00362 {
00363    struct ast_frame *out;
00364    int len, srclen = 0;
00365    void *buf;
00366    /* Start with standard stuff */
00367    len = sizeof(struct ast_frame) + AST_FRIENDLY_OFFSET + f->datalen;
00368    /* If we have a source, add space for it */
00369    /*
00370     * XXX Watch out here - if we receive a src which is not terminated
00371     * properly, we can be easily attacked. Should limit the size we deal with.
00372     */
00373    if (f->src)
00374       srclen = strlen(f->src);
00375    if (srclen > 0)
00376       len += srclen + 1;
00377    buf = malloc(len);
00378    if (!buf)
00379       return NULL;
00380    out = buf;
00381    /* Set us as having malloc'd header only, so it will eventually
00382       get freed. */
00383    out->frametype = f->frametype;
00384    out->subclass = f->subclass;
00385    out->datalen = f->datalen;
00386    out->samples = f->samples;
00387    out->delivery = f->delivery;
00388    out->mallocd = AST_MALLOCD_HDR;
00389    out->offset = AST_FRIENDLY_OFFSET;
00390    out->data = buf + sizeof(struct ast_frame) + AST_FRIENDLY_OFFSET;
00391    if (srclen > 0) {
00392       out->src = out->data + f->datalen;
00393       /* Must have space since we allocated for it */
00394       strcpy((char *)out->src, f->src);
00395    } else
00396       out->src = NULL;
00397    out->prev = NULL;
00398    out->next = NULL;
00399    memcpy(out->data, f->data, out->datalen); 
00400    return out;
00401 }

void ast_frfree struct ast_frame fr  ) 
 

Requests a frame to be allocated Frees a frame.

Todo:
Important: I should be made more efficient. Frame headers should most definitely be cached

Definition at line 273 of file frame.c.

References AST_MALLOCD_DATA, AST_MALLOCD_HDR, AST_MALLOCD_SRC, ast_mutex_lock(), ast_mutex_unlock(), ast_frame::data, free, ast_frame::mallocd, ast_frame::next, ast_frame::offset, ast_frame::prev, and ast_frame::src.

Referenced by __adsi_transmit_messages(), __ast_request_and_dial(), adsi_careful_send(), agent_ack_sleep(), agent_read(), app_exec(), ast_app_getvoice(), ast_bridge_call(), ast_channel_free(), ast_channel_spy_read_frame(), ast_channel_spy_remove(), ast_dsp_process(), ast_feature_request_and_dial(), ast_generic_bridge(), ast_masq_park_call(), ast_play_and_prepend(), ast_play_and_record_full(), ast_queue_frame(), ast_read(), ast_recvtext(), ast_rtp_bridge(), ast_safe_sleep(), ast_safe_sleep_conditional(), ast_send_image(), ast_slinfactory_destroy(), ast_slinfactory_read(), ast_tonepair(), ast_translate(), ast_waitfordigit(), ast_waitfordigit_full(), ast_waitstream(), ast_waitstream_exten(), ast_waitstream_full(), ast_write(), async_wait(), autoservice_run(), background_detect_exec(), builtin_atxfer(), calc_cost(), channel_spy(), check_goto_on_transfer(), conf_exec(), conf_flush(), conf_run(), copy_data_from_queue(), dictate_exec(), disa_exec(), do_parking_thread(), do_waiting(), echo_exec(), find_cache(), gen_generate(), handle_recordfile(), iax2_bridge(), iax_park_thread(), ices_exec(), measurenoise(), mixmonitor_thread(), moh_files_generator(), mp3_exec(), NBScat_exec(), queue_frame_to_spies(), receive_dtmf_digits(), record_exec(), recordthread(), rpt(), rpt_exec(), run_agi(), send_tone_burst(), send_waveform_to_channel(), sendurl_exec(), sms_exec(), spy_generate(), ss_thread(), vpb_bridge(), wait_for_answer(), wait_for_hangup(), waitforring_exec(), and zt_bridge().

00274 {
00275    if (fr->mallocd & AST_MALLOCD_DATA) {
00276       if (fr->data) 
00277          free(fr->data - fr->offset);
00278    }
00279    if (fr->mallocd & AST_MALLOCD_SRC) {
00280       if (fr->src)
00281          free((char *)fr->src);
00282    }
00283    if (fr->mallocd & AST_MALLOCD_HDR) {
00284 #ifdef TRACE_FRAMES
00285       headers--;
00286       ast_mutex_lock(&framelock);
00287       if (fr->next)
00288          fr->next->prev = fr->prev;
00289       if (fr->prev)
00290          fr->prev->next = fr->next;
00291       else
00292          headerlist = fr->next;
00293       ast_mutex_unlock(&framelock);
00294 #endif         
00295       free(fr);
00296    }
00297 }

struct ast_frame* ast_frisolate struct ast_frame fr  ) 
 

Copies a frame.

Parameters:
fr frame to act upon 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.
Returns:
Returns a frame on success, NULL on error

Definition at line 304 of file frame.c.

References ast_frame_header_new(), AST_FRIENDLY_OFFSET, ast_log(), AST_MALLOCD_DATA, AST_MALLOCD_HDR, AST_MALLOCD_SRC, ast_frame::data, ast_frame::datalen, ast_frame::frametype, free, LOG_WARNING, malloc, ast_frame::mallocd, ast_frame::offset, ast_frame::samples, ast_frame::src, strdup, and ast_frame::subclass.

Referenced by jpeg_read_image(), and monitor_handle_owned().

00305 {
00306    struct ast_frame *out;
00307    void *newdata;
00308 
00309    if (!(fr->mallocd & AST_MALLOCD_HDR)) {
00310       /* Allocate a new header if needed */
00311       out = ast_frame_header_new();
00312       if (!out) {
00313          ast_log(LOG_WARNING, "Out of memory\n");
00314          return NULL;
00315       }
00316       out->frametype = fr->frametype;
00317       out->subclass = fr->subclass;
00318       out->datalen = fr->datalen;
00319       out->samples = fr->samples;
00320       out->offset = fr->offset;
00321       out->src = NULL;
00322       out->data = fr->data;
00323    } else
00324       out = fr;
00325    
00326    if (!(fr->mallocd & AST_MALLOCD_SRC)) {
00327       if (fr->src) {
00328          out->src = strdup(fr->src);
00329          if (!out->src) {
00330             if (out != fr)
00331                free(out);
00332             ast_log(LOG_WARNING, "Out of memory\n");
00333             return NULL;
00334          }
00335       }
00336    } else
00337       out->src = fr->src;
00338    
00339    if (!(fr->mallocd & AST_MALLOCD_DATA))  {
00340       newdata = malloc(fr->datalen + AST_FRIENDLY_OFFSET);
00341       if (!newdata) {
00342          if (out->src != fr->src)
00343             free((void *) out->src);
00344          if (out != fr)
00345             free(out);
00346          ast_log(LOG_WARNING, "Out of memory\n");
00347          return NULL;
00348       }
00349       newdata += AST_FRIENDLY_OFFSET;
00350       out->offset = AST_FRIENDLY_OFFSET;
00351       out->datalen = fr->datalen;
00352       memcpy(newdata, fr->data, fr->datalen);
00353       out->data = newdata;
00354    }
00355 
00356    out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA;
00357    
00358    return out;
00359 }

struct ast_format_list* ast_get_format_list size_t *  size  ) 
 

Definition at line 503 of file frame.c.

00504 {
00505    *size = (sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list));
00506    return AST_FORMAT_LIST;
00507 }

struct ast_format_list* ast_get_format_list_index int  index  ) 
 

Definition at line 498 of file frame.c.

00499 {
00500    return &AST_FORMAT_LIST[index];
00501 }

int ast_getformatbyname char *  name  ) 
 

Gets a format from a name.

Parameters:
name string of format
Returns:
This returns the form of the format in binary on success, 0 on error.

Definition at line 568 of file frame.c.

References ast_expand_codec_alias(), and format.

Referenced by ast_parse_allow_disallow(), iax_template_parse(), load_moh_classes(), reload_config(), try_suggested_sip_codec(), and update_common_options().

00569 {
00570    int x = 0, all = 0, format = 0;
00571 
00572    all = strcasecmp(name, "all") ? 0 : 1;
00573    for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) {
00574       if(AST_FORMAT_LIST[x].visible && (all || 
00575                                 !strcasecmp(AST_FORMAT_LIST[x].name,name) ||
00576                                 !strcasecmp(AST_FORMAT_LIST[x].name,ast_expand_codec_alias(name)))) {
00577          format |= AST_FORMAT_LIST[x].bits;
00578          if(!all)
00579             break;
00580       }
00581    }
00582 
00583    return format;
00584 }

char* ast_getformatname int  format  ) 
 

Get the name of a format.

Parameters:
format id of format
Returns:
A static string containing the name of the format or "UNKN" if unknown.

Definition at line 509 of file frame.c.

Referenced by __login_exec(), __sip_show_channels(), _sip_show_peer(), add_codec_to_sdp(), agent_call(), ast_channel_spy_add(), ast_codec_get_len(), ast_codec_get_samples(), ast_codec_pref_string(), ast_dsp_process(), ast_frame_dump(), ast_play_and_prepend(), ast_play_and_record_full(), ast_read(), ast_register_translator(), ast_rtp_write(), ast_slinfactory_feed(), ast_streamfile(), ast_translator_build_path(), ast_unregister_translator(), ast_writestream(), do_waiting(), eagi_exec(), function_iaxpeer(), function_sippeer(), iax2_request(), iax2_show_channels(), iax2_show_peer(), iax_show_provisioning(), modem_request(), moh_classes_show(), moh_release(), phone_setup(), print_codec_to_cli(), queue_frame_to_spies(), rebuild_matrix(), set_format(), show_codecs(), show_file_formats(), show_image_formats(), show_translation(), sip_request_call(), sip_show_channel(), sip_show_user(), socket_read(), and zt_read().

00510 {
00511    int x = 0;
00512    char *ret = "unknown";
00513    for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) {
00514       if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == format) {
00515          ret = AST_FORMAT_LIST[x].name;
00516          break;
00517       }
00518    }
00519    return ret;
00520 }

char* ast_getformatname_multiple char *  buf,
size_t  size,
int  format
 

Get the names of a set of formats.

Parameters:
buf a buffer for the output string
size size of buf (bytes)
format the format (combined IDs of codecs) Prints a list of readable codec names corresponding to "format". ex: for format=AST_FORMAT_GSM|AST_FORMAT_SPEEX|AST_FORMAT_ILBC it will return "0x602 (GSM|SPEEX|ILBC)"
Returns:
The return value is buf.

Definition at line 522 of file frame.c.

References ast_format_list::bits, name, and ast_format_list::visible.

Referenced by _sip_show_peer(), function_iaxpeer(), function_sippeer(), iax2_bridge(), iax2_show_peer(), and process_sdp().

00522                                                                      {
00523 
00524    int x = 0;
00525    unsigned len;
00526    char *end = buf;
00527    char *start = buf;
00528    if (!size) return buf;
00529    snprintf(end, size, "0x%x (", format);
00530    len = strlen(end);
00531    end += len;
00532    size -= len;
00533    start = end;
00534    for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) {
00535       if (AST_FORMAT_LIST[x].visible && (AST_FORMAT_LIST[x].bits & format)) {
00536          snprintf(end, size,"%s|",AST_FORMAT_LIST[x].name);
00537          len = strlen(end);
00538          end += len;
00539          size -= len;
00540       }
00541    }
00542    if (start == end)
00543       snprintf(start, size, "nothing)");
00544    else if (size > 1)
00545       *(end -1) = ')';
00546    return buf;
00547 }

void ast_parse_allow_disallow struct ast_codec_pref pref,
int *  mask,
const char *  list,
int  allowing
 

Parse an "allow" or "deny" line and update the mask and pref if provided.

Definition at line 1022 of file frame.c.

References ast_codec_pref_append(), ast_codec_pref_remove(), ast_getformatbyname(), ast_log(), ast_strdupa, format, LOG_WARNING, parse(), and strsep().

Referenced by build_peer(), build_user(), reload_config(), and set_config().

01023 {
01024    char *parse;
01025    char *this;
01026    int format;
01027 
01028    parse = ast_strdupa(list);
01029    while ((this = strsep(&parse, ","))) {
01030       if (!(format = ast_getformatbyname(this))) {
01031          ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this);
01032          continue;
01033       }
01034 
01035       if (mask) {
01036          if (allowing)
01037             *mask |= format;
01038          else
01039             *mask &= ~format;
01040       }
01041 
01042       if (pref) {
01043          if (strcasecmp(this, "all")) {
01044             if (allowing)
01045                ast_codec_pref_append(pref, format);
01046             else
01047                ast_codec_pref_remove(pref, format);
01048          } else if (!allowing) {
01049             memset(pref, 0, sizeof(*pref));
01050          }
01051       }
01052    }
01053 }

void ast_smoother_free struct ast_smoother s  ) 
 

Definition at line 243 of file frame.c.

References free.

Referenced by ast_rtp_destroy(), and ast_rtp_write().

00244 {
00245    free(s);
00246 }

int ast_smoother_get_flags struct ast_smoother smoother  ) 
 

Definition at line 127 of file frame.c.

References ast_smoother::flags.

00128 {
00129    return s->flags;
00130 }

struct ast_smoother* ast_smoother_new int  bytes  ) 
 

Definition at line 116 of file frame.c.

References ast_smoother_reset(), malloc, and s.

Referenced by ast_rtp_write().

00117 {
00118    struct ast_smoother *s;
00119    if (size < 1)
00120       return NULL;
00121    s = malloc(sizeof(struct ast_smoother));
00122    if (s)
00123       ast_smoother_reset(s, size);
00124    return s;
00125 }

struct ast_frame* ast_smoother_read struct ast_smoother s  ) 
 

Definition at line 194 of file frame.c.

References AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), AST_SMOOTHER_FLAG_G729, ast_tvadd(), ast_smoother::data, ast_frame::data, ast_frame::datalen, ast_smoother::delivery, ast_frame::delivery, ast_smoother::f, ast_smoother::flags, ast_smoother::format, ast_smoother::framedata, ast_frame::frametype, ast_smoother::len, LOG_WARNING, ast_frame::offset, ast_smoother::opt, ast_frame::samples, ast_smoother::samplesperbyte, ast_smoother::size, and ast_frame::subclass.

Referenced by ast_rtp_write().

00195 {
00196    struct ast_frame *opt;
00197    int len;
00198    /* IF we have an optimization frame, send it */
00199    if (s->opt) {
00200       if (s->opt->offset < AST_FRIENDLY_OFFSET)
00201          ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).",
00202                      s->opt->offset);
00203       opt = s->opt;
00204       s->opt = NULL;
00205       return opt;
00206    }
00207 
00208    /* Make sure we have enough data */
00209    if (s->len < s->size) {
00210       /* Or, if this is a G.729 frame with VAD on it, send it immediately anyway */
00211       if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->size % 10)))
00212          return NULL;
00213    }
00214    len = s->size;
00215    if (len > s->len)
00216       len = s->len;
00217    /* Make frame */
00218    s->f.frametype = AST_FRAME_VOICE;
00219    s->f.subclass = s->format;
00220    s->f.data = s->framedata + AST_FRIENDLY_OFFSET;
00221    s->f.offset = AST_FRIENDLY_OFFSET;
00222    s->f.datalen = len;
00223    /* Samples will be improper given VAD, but with VAD the concept really doesn't even exist */
00224    s->f.samples = len * s->samplesperbyte;   /* XXX rounding */
00225    s->f.delivery = s->delivery;
00226    /* Fill Data */
00227    memcpy(s->f.data, s->data, len);
00228    s->len -= len;
00229    /* Move remaining data to the front if applicable */
00230    if (s->len) {
00231       /* In principle this should all be fine because if we are sending
00232          G.729 VAD, the next timestamp will take over anyawy */
00233       memmove(s->data, s->data + len, s->len);
00234       if (!ast_tvzero(s->delivery)) {
00235          /* If we have delivery time, increment it, otherwise, leave it at 0 */
00236          s->delivery = ast_tvadd(s->delivery, ast_samp2tv(s->f.samples, 8000));
00237       }
00238    }
00239    /* Return frame */
00240    return &s->f;
00241 }

void ast_smoother_reset struct ast_smoother s,
int  bytes
 

Definition at line 110 of file frame.c.

References ast_smoother::size.

Referenced by ast_smoother_new().

00111 {
00112    memset(s, 0, sizeof(struct ast_smoother));
00113    s->size = size;
00114 }

void ast_smoother_set_flags struct ast_smoother smoother,
int  flags
 

Definition at line 132 of file frame.c.

References ast_smoother::flags.

Referenced by ast_rtp_write().

00133 {
00134    s->flags = flags;
00135 }

void ast_swapcopy_samples void *  dst,
const void *  src,
int  samples
 

Definition at line 487 of file frame.c.

Referenced by __ast_smoother_feed(), iax_frame_wrap(), and phone_write_buf().

00488 {
00489    int i;
00490    unsigned short *dst_s = dst;
00491    const unsigned short *src_s = src;
00492 
00493    for (i=0; i<samples; i++)
00494       dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8);
00495 }


Generated on Sun Aug 6 15:11:32 2006 for Asterisk - the Open Source PBX by  doxygen 1.4.2