91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
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* Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
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* Takashi Iwai <tiwai@suse.de>
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*
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* SB16ASP/AWE32 CSP control
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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
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __SOUND_SB16_CSP_H
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#define __SOUND_SB16_CSP_H
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#include <sound/sb.h>
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#include <sound/hwdep.h>
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#include <linux/firmware.h>
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#include <uapi/sound/sb16_csp.h>
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struct snd_sb_csp;
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/* indices for the known CSP programs */
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enum {
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CSP_PROGRAM_MULAW,
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CSP_PROGRAM_ALAW,
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CSP_PROGRAM_ADPCM_INIT,
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CSP_PROGRAM_ADPCM_PLAYBACK,
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CSP_PROGRAM_ADPCM_CAPTURE,
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CSP_PROGRAM_COUNT
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};
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/*
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* CSP operators
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*/
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struct snd_sb_csp_ops {
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int (*csp_use) (struct snd_sb_csp * p);
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int (*csp_unuse) (struct snd_sb_csp * p);
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int (*csp_autoload) (struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode);
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int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels);
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int (*csp_stop) (struct snd_sb_csp * p);
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int (*csp_qsound_transfer) (struct snd_sb_csp * p);
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};
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/*
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* CSP private data
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*/
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struct snd_sb_csp {
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struct snd_sb *chip; /* SB16 DSP */
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int used; /* usage flag - exclusive */
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char codec_name[16]; /* name of codec */
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unsigned short func_nr; /* function number */
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unsigned int acc_format; /* accepted PCM formats */
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int acc_channels; /* accepted channels */
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int acc_width; /* accepted sample width */
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int acc_rates; /* accepted sample rates */
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int mode; /* MODE */
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int run_channels; /* current CSP channels */
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int run_width; /* current sample width */
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int version; /* CSP version (0x10 - 0x1f) */
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int running; /* running state */
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struct snd_sb_csp_ops ops; /* operators */
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spinlock_t q_lock; /* locking */
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int q_enabled; /* enabled flag */
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int qpos_left; /* left position */
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int qpos_right; /* right position */
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int qpos_changed; /* position changed flag */
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struct snd_kcontrol *qsound_switch;
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struct snd_kcontrol *qsound_space;
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struct mutex access_mutex; /* locking */
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const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
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};
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int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
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#endif /* __SOUND_SB16_CSP */
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