voicemgr.h
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上传日期:2013-04-10
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- /*
- **********************************************************************
- * sblive_voice.h -- EMU Voice Resource Manager header file
- * Copyright 1999, 2000 Creative Labs, Inc.
- *
- **********************************************************************
- *
- * Date Author Summary of changes
- * ---- ------ ------------------
- * October 20, 1999 Bertrand Lee base code release
- *
- **********************************************************************
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
- * USA.
- *
- **********************************************************************
- */
- #ifndef _VOICEMGR_H
- #define _VOICEMGR_H
- #include "hwaccess.h"
- /* struct emu_voice.usage flags */
- #define VOICE_USAGE_FREE 0x01
- #define VOICE_USAGE_MIDI 0x02
- #define VOICE_USAGE_PLAYBACK 0x04
- /* struct emu_voice.flags flags */
- #define VOICE_FLAGS_STEREO 0x02
- #define VOICE_FLAGS_16BIT 0x04
- struct voice_param
- {
- /* FX bus amount send */
- u32 send_routing;
- u32 send_a;
- u32 send_b;
- u32 send_c;
- u32 send_d;
- u32 initial_fc;
- u32 fc_target;
- u32 initial_attn;
- u32 volume_target;
- u32 byampl_env_sustain;
- u32 byampl_env_decay;
- };
- struct voice_mem {
- int emupageindex;
- void *addr[BUFMAXPAGES];
- dma_addr_t dma_handle[BUFMAXPAGES];
- u32 pages;
- };
- struct emu_voice
- {
- struct emu10k1_card *card;
- u8 usage; /* Free, MIDI, playback */
- u8 num; /* Voice ID */
- u8 flags; /* Stereo/mono, 8/16 bit */
- u32 startloop;
- u32 endloop;
- u32 start;
- u32 initial_pitch;
- u32 pitch_target;
- struct voice_param params[2];
- struct voice_mem mem;
- };
- int emu10k1_voice_alloc_buffer(struct emu10k1_card *, struct voice_mem *, u32);
- void emu10k1_voice_free_buffer(struct emu10k1_card *, struct voice_mem *);
- int emu10k1_voice_alloc(struct emu10k1_card *, struct emu_voice *);
- void emu10k1_voice_free(struct emu_voice *);
- void emu10k1_voice_playback_setup(struct emu_voice *);
- void emu10k1_voices_start(struct emu_voice *, unsigned int, int);
- void emu10k1_voices_stop(struct emu_voice *, int);
- #endif /* _VOICEMGR_H */