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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_CONTROL_H
#define MPLAYER_CONTROL_H
#include <sys/types.h>
/*********************************************
// Extended control used with arguments that operates on only one
// channel at the time
*/
typedef struct af_control_ext_s{
void* arg; // Argument
int ch; // Chanel number
}af_control_ext_t;
/*********************************************
// Control parameters
*/
/* The control system is divided into 3 levels
mandatory calls - all filters must answer to all of these
optional calls - are optional
filter specific calls - applies only to some filters
*/
#define AF_CONTROL_MANDATORY 0x10000000
#define AF_CONTROL_OPTIONAL 0x20000000
#define AF_CONTROL_FILTER_SPECIFIC 0x40000000
// MANDATORY CALLS
/* Reinitialize filter. The optional argument contains the new
configuration in form of a struct mp_audio struct. If the filter does not
support the new format the struct should be changed and AF_FALSE
should be returned. If the incoming and outgoing data streams are
identical the filter can return AF_DETACH. This will remove the
filter. */
#define AF_CONTROL_REINIT 0x00000100 | AF_CONTROL_MANDATORY
// OPTIONAL CALLS
// Called just before destruction of a filter
#define AF_CONTROL_PRE_DESTROY 0x00000200 | AF_CONTROL_OPTIONAL
/* Commandline parameters. If there were any commandline parameters
for this specific filter, they will be given as a char* in the
argument */
#define AF_CONTROL_COMMAND_LINE 0x00000300 | AF_CONTROL_OPTIONAL
// FILTER SPECIFIC CALLS
// Basic operations: These can be ored with any of the below calls
// Set argument
#define AF_CONTROL_SET 0x00000000
// Get argument
#define AF_CONTROL_GET 0x00000001
// Resample
// Set output rate in resample
#define AF_CONTROL_RESAMPLE_RATE 0x00000100 | AF_CONTROL_FILTER_SPECIFIC
// Format
#define AF_CONTROL_FORMAT_FMT 0x00000400 | AF_CONTROL_FILTER_SPECIFIC
// Channels
// Set number of output channels in channels
#define AF_CONTROL_CHANNELS 0x00000600 | AF_CONTROL_FILTER_SPECIFIC
// Volume
// Set volume level, arg is a float* with the volume for all the channels
#define AF_CONTROL_VOLUME_LEVEL 0x00000D00 | AF_CONTROL_FILTER_SPECIFIC
// Pan
// Pan levels, arg is a control_ext with a float*
#define AF_CONTROL_PAN_LEVEL 0x00001A00 | AF_CONTROL_FILTER_SPECIFIC
// Number of outputs from pan, arg is int*
#define AF_CONTROL_PAN_NOUT 0x00001B00 | AF_CONTROL_FILTER_SPECIFIC
// Balance, arg is float*; range -1 (left) to 1 (right), 0 center
#define AF_CONTROL_PAN_BALANCE 0x00001C00 | AF_CONTROL_FILTER_SPECIFIC
// Delay length in ms, arg is a control_ext with a float*
#define AF_CONTROL_DELAY_LEN 0x00001E00 | AF_CONTROL_FILTER_SPECIFIC
// Subwoofer
// Channel number which to insert the filtered data, arg in int*
#define AF_CONTROL_SUB_CH 0x00001F00 | AF_CONTROL_FILTER_SPECIFIC
// Cutoff frequency [Hz] for lowpass filter, arg is float*
#define AF_CONTROL_SUB_FC 0x00002000 | AF_CONTROL_FILTER_SPECIFIC
// Export
#define AF_CONTROL_EXPORT_SZ 0x00003000 | AF_CONTROL_FILTER_SPECIFIC
// Channel number which to inster the filtered data, arg in int*
#define AF_CONTROL_CENTER_CH 0x00003200 | AF_CONTROL_FILTER_SPECIFIC
#define AF_CONTROL_PLAYBACK_SPEED 0x00003500 | AF_CONTROL_FILTER_SPECIFIC
#define AF_CONTROL_SCALETEMPO_AMOUNT 0x00003600 | AF_CONTROL_FILTER_SPECIFIC
#endif /* MPLAYER_CONTROL_H */
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