This file is part of Echo Digital Audio's generic driver library. Copyright Echo Digital Audio Corporation (c) 1998 - 2005 All rights reserved www.echoaudio.com
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/* This function routes the sound from a virtual channel to a real output */ staticint set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, int gain)
{ int index;
if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
output >= num_busses_out(chip))) return -EINVAL;
/* Tell the DSP to read and update virtual mixer levels in comm page. */ staticint update_vmixer_level(struct echoaudio *chip)
{ if (wait_handshake(chip)) return -EIO;
clear_handshake(chip); return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
}
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