patch-2.2.17 linux/drivers/sound/emu10k1/cardwo.h

• Lines: 102
• Date: Mon Sep 4 18:39:21 2000
• Orig file: v2.2.16/drivers/sound/emu10k1/cardwo.h
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --recursive --new-file v2.2.16/drivers/sound/emu10k1/cardwo.h linux/drivers/sound/emu10k1/cardwo.h
@@ -0,0 +1,101 @@
+/*     
+ **********************************************************************
+ *     cardwo.h -- header file for card wave out functions
+ *     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 _CARDWO_H
+#define _CARDWO_H
+
+#include "icardwav.h"
+#include "audio.h"
+#include "voicemgr.h"
+#include "timer.h"
+
+/* setting this to other than a power of two may break some applications */
+#define WAVEOUT_MAXBUFSIZE	MAXBUFSIZE
+#define WAVEOUT_MINBUFSIZE	64
+
+#define WAVEOUT_DEFAULTFRAGLEN	20 /* Time to play a fragment in ms (latency) */
+#define WAVEOUT_DEFAULTBUFLEN	500 /* Time to play the entire buffer in ms */
+
+#define WAVEOUT_MINFRAGSHIFT	4
+
+struct waveout_buffer {
+	u16 ossfragshift;
+        u32 numfrags;
+	u32 fragment_size;	/* in bytes units */
+	u32 size;		/* in bytes units */
+	u32 pages;		/* buffer size in page units*/
+	int emupageindex;
+	void *addr[BUFMAXPAGES];
+	dma_addr_t dma_handle[BUFMAXPAGES];
+        u32 silence_pos;	/* software cursor position (including silence) */
+	u32 hw_pos;		/* hardware cursor position */
+	u32 bytestocopy;	/* free space on buffer (including silence) */
+	u8 fill_silence;
+	u32 silence_bytes;      /* silence bytes in buffer */
+};
+
+struct woinst 
+{
+	u8 state;
+	struct emu_voice voice;
+	struct emu_timer timer;
+        struct wave_format format;
+	struct waveout_buffer buffer;
+        wait_queue_head_t wait_queue;
+        u8 mmapped;
+        u32 total_copied;	/* total number of bytes written() to the buffer (excluding silence) */
+        u32 total_played;	/* total number of bytes played including silence */
+        u32 blocks;
+	u8 device;
+	spinlock_t lock;
+};
+
+struct emu10k1_waveout
+{
+	u32 globalvol;
+	u32 mute;
+	u32 left;
+	u32 right;
+	u32 globalreverb;
+	u32 globalchorus;
+};
+
+int emu10k1_waveout_open(struct emu10k1_wavedevice *);
+void emu10k1_waveout_close(struct emu10k1_wavedevice *);
+void emu10k1_waveout_start(struct emu10k1_wavedevice *);
+void emu10k1_waveout_stop(struct emu10k1_wavedevice *);
+void emu10k1_waveout_getxfersize(struct woinst*, u32 *);
+void emu10k1_waveout_xferdata(struct woinst*, u8*, u32 *);
+void emu10k1_waveout_fillsilence(struct woinst*);
+int emu10k1_waveout_setformat(struct emu10k1_wavedevice*, struct wave_format*);
+void emu10k1_waveout_update(struct woinst*);
+
+#endif /* _CARDWO_H */