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This patch implements the REST API's for POST /channels/{channelId}/play

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and GET /playback/{playbackId}.

This allows an external application to initiate playback of a sound on a
channel while the channel is in the Stasis application.

/play commands are issued asynchronously, and return immediately with
the URL of the associated /playback resource. Playback commands queue up,
playing in succession. The /playback resource shows the state of a
playback operation as enqueued, playing or complete. (Although the
operation will only be in the 'complete' state for a very short time,
since it is almost immediately freed up).

(closes issue ASTERISK-21283)
(closes issue ASTERISK-21586)
Review: https://reviewboard.asterisk.org/r/2531/



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@389587 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
David M. Lee
2013-05-23 20:11:35 +00:00
parent 3464e0919a
commit 10ba6bf8a8
20 changed files with 906 additions and 97 deletions
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117
include/asterisk/stasis_app_playback.h Normal file
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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* David M. Lee, II <dlee@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.
*/
#ifndef _ASTERISK_STASIS_APP_PLAYBACK_H
#define _ASTERISK_STASIS_APP_PLAYBACK_H
/*! \file
*
* \brief Stasis Application Playback API. See \ref res_stasis "Stasis
* Application API" for detailed documentation.
*
* \author David M. Lee, II <dlee@digium.com>
* \since 12
*/
#include "asterisk/stasis_app.h"
/*! Opaque struct for handling the playback of a single file */
struct stasis_app_playback;
/*! State of a playback operation */
enum stasis_app_playback_state {
/*! The playback has not started yet */
STASIS_PLAYBACK_STATE_QUEUED,
/*! The media is currently playing */
STASIS_PLAYBACK_STATE_PLAYING,
/*! The media has stopped playing */
STASIS_PLAYBACK_STATE_COMPLETE,
};
enum stasis_app_playback_media_control {
STASIS_PLAYBACK_STOP,
STASIS_PLAYBACK_PAUSE,
STASIS_PLAYBACK_PLAY,
STASIS_PLAYBACK_REWIND,
STASIS_PLAYBACK_FAST_FORWARD,
STASIS_PLAYBACK_SPEED_UP,
STASIS_PLAYBACK_SLOW_DOWN,
};
/*!
* \brief Play a file to the control's channel.
*
* Note that the file isn't the full path to the file. Asterisk's internal
* playback mechanism will automagically select the best format based on the
* available codecs for the channel.
*
* \param control Control for \c res_stasis.
* \param file Base filename for the file to play.
* \return Playback control object.
* \return \c NULL on error.
*/
struct stasis_app_playback *stasis_app_control_play_uri(
struct stasis_app_control *control, const char *file,
const char *language);
/*!
* \brief Gets the current state of a playback operation.
*
* \param playback Playback control object.
* \return The state of the \a playback object.
*/
enum stasis_app_playback_state stasis_app_playback_get_state(
struct stasis_app_playback *playback);
/*!
* \brief Gets the unique id of a playback object.
*
* \param playback Playback control object.
* \return \a playback's id.
* \return \c NULL if \a playback ic \c NULL
*/
const char *stasis_app_playback_get_id(
struct stasis_app_playback *playback);
/*!
* \brief Finds the playback object with the given id.
*
* \param id Id of the playback object to find.
* \return Associated \ref stasis_app_playback object.
* \return \c NULL if \a id not found.
*/
struct ast_json *stasis_app_playback_find_by_id(const char *id);
/*!
* \brief Controls the media for a given playback operation.
*
* \param playback Playback control object.
* \param control Media control operation.
* \return 0 on success
* \return non-zero on error.
*/
int stasis_app_playback_control(struct stasis_app_playback *playback,
enum stasis_app_playback_media_control control);
/*!
* \brief Message type for playback updates. The data is an
* \ref ast_channel_blob.
*/
struct stasis_message_type *stasis_app_playback_snapshot_type(void);
#endif /* _ASTERISK_STASIS_APP_PLAYBACK_H */