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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 is currently playing */
STASIS_PLAYBACK_STATE_PAUSED,
/*! The media is transitioning to the next in the list */
STASIS_PLAYBACK_STATE_CONTINUING,
/*! The media has stopped playing */
STASIS_PLAYBACK_STATE_COMPLETE,
/*! The playback was canceled. */
STASIS_PLAYBACK_STATE_CANCELED,
/*! The playback was stopped. */
STASIS_PLAYBACK_STATE_STOPPED,
/*! Enum end sentinel. */
STASIS_PLAYBACK_STATE_MAX,
};
/*! Valid operation for controlling a playback. */
enum stasis_app_playback_media_operation {
/*! Stop the playback operation. */
STASIS_PLAYBACK_STOP,
/*! Restart the media from the beginning. */
STASIS_PLAYBACK_RESTART,
/*! Pause playback. */
STASIS_PLAYBACK_PAUSE,
/*! Resume paused playback. */
STASIS_PLAYBACK_UNPAUSE,
/*! Rewind playback. */
STASIS_PLAYBACK_REVERSE,
/*! Fast forward playback. */
STASIS_PLAYBACK_FORWARD,
/*! Enum end sentinel. */
STASIS_PLAYBACK_MEDIA_OP_MAX,
};
enum stasis_app_playback_target_type {
/*! The target is a channel */
STASIS_PLAYBACK_TARGET_CHANNEL = 0,
/*! The target is a bridge */
STASIS_PLAYBACK_TARGET_BRIDGE,
};
/*!
* \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 media Array of const char * media files to play.
* \param media_count The number of media files in \c media.
* \param language Selects the file based on language.
* \param target_id ID of the target bridge or channel.
* \param target_type What the target type is
* \param skipms Number of milliseconds to skip for forward/reverse operations.
* \param offsetms Number of milliseconds to skip before playing.
* \param id ID to assign the new playback or NULL for default.
* \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 **media,
size_t media_count, const char *language, const char *target_id,
enum stasis_app_playback_target_type target_type,
int skipms, long offsetms, const char *id);
/*!
* \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 stasis_app_playback *stasis_app_playback_find_by_id(const char *id);
/*!
* \brief Convert a playback to its JSON representation
*
* \param playback The playback object to convert to JSON
*
* \retval \c NULL on error
* \retval A JSON object on success
*/
struct ast_json *stasis_app_playback_to_json(
const struct stasis_app_playback *playback);
enum stasis_playback_oper_results {
STASIS_PLAYBACK_OPER_OK,
STASIS_PLAYBACK_OPER_FAILED,
STASIS_PLAYBACK_OPER_NOT_PLAYING,
};
/*!
* \brief Controls the media for a given playback operation.
*
* \param playback Playback control object.
* \param control Media control operation.
* \return \c STASIS_PLAYBACK_OPER_OK on success.
* \return \ref stasis_playback_oper_results indicating failure.
*/
enum stasis_playback_oper_results stasis_app_playback_operation(
struct stasis_app_playback *playback,
enum stasis_app_playback_media_operation operation);
/*!
* \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 */
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