2007-05-08 12:22:42 +00:00
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/*
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* Copyright (C) 2006 Benjamin Zores
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* Copyright (C) 2007 Sven Gothel (Channel Navigation)
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* Stream layer for hardware MPEG 1/2/4 encoders a.k.a PVR
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* (such as WinTV PVR-150/250/350/500 (a.k.a IVTV), pvrusb2 and cx88).
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* See http://ivtvdriver.org/index.php/Main_Page for more details on the
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* cards supported by the ivtv driver.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2007-05-08 12:20:46 +00:00
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#ifndef PVR_H
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#define PVR_H
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#include "tv.h"
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/**
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* @brief Get the current station name.
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* The pointer is valid, till the stream is closed.
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* @return The stream's station name
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*/
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const char *pvr_get_current_stationname (stream_t *stream);
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/**
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* @brief Get the current channel name.
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* The pointer is valid, till the stream is closed.
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* @return The stream's channel name
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*/
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const char *pvr_get_current_channelname (stream_t *stream);
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/**
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* @brief Get the current frequency.
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* @return frequency
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*/
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int pvr_get_current_frequency (stream_t *stream);
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/**
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* @brief Set the current station using the channel name.
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* This function will fail,
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* if the channel does not exist, or the station is not enabled
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* @return 0 if the station is available, otherwise -1
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*/
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int pvr_set_channel (stream_t *stream, const char *channel);
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/**
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* @brief Set the current station using to the last set channel
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* @return 0 if the station is available, otherwise -1
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*/
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int pvr_set_lastchannel (stream_t *stream);
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/**
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* @brief Set the current channel using the frequency.
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* This function will fail,
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* if the frequency does not exist, or the station is not enabled
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* @return 0 if the station is available, otherwise -1
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*/
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int pvr_set_freq (stream_t *stream, int freq);
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/**
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* @brief Set the current station while stepping.
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* This function will fail,
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* if the station does not exist, or the station is not enabled
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* @return 0 if the station is available, otherwise -1
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*/
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int pvr_set_channel_step (stream_t *stream, int step);
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/**
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* @brief Set the current frequency while stepping
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* This function will fail,
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* if the frequency is invalid, i.e. <0
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* @return 0 if success, otherwise -1
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*/
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int pvr_force_freq_step (stream_t *stream, int step);
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#endif /* PVR_H */
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