--- /dev/null
+/* MikMod sound library
+ (c) 1998, 1999 Miodrag Vallat and others - see file AUTHORS for
+ complete list.
+
+ This library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Library 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 Library General Public License for more details.
+
+ You should have received a copy of the GNU Library 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.
+*/
+
+/*==============================================================================
+
+ $Id$
+
+ Windows Sound System and compatible soundcards definitions
+
+==============================================================================*/
+
+#ifndef __DOSWSS_H__
+#define __DOSWSS_H__
+
+#include "dosdma.h"
+#include "dosirq.h"
+
+#define WSS_ADDR (wss.port + 0x04)
+#define WSS_DATA (wss.port + 0x05)
+#define WSS_STATUS (wss.port + 0x06)
+#define WSS_PIO (wss.port + 0x07)
+
+/* WSS_ADDR: Bits 0-4 select an internal register to read/write */
+#define WSSR_INPUT_L 0x00 /* Left input control register */
+#define WSSR_INPUT_R 0x01 /* RIght input control register */
+#define WSSR_AUX1_L 0x02 /* Left Aux #1 input control */
+#define WSSR_AUX1_R 0x03 /* Right Aux #1 input control */
+#define WSSR_CD_L 0x04 /* Left Aux #2 input control */
+#define WSSR_CD_R 0x05 /* Right Aux #2 input control */
+#define WSSR_MASTER_L 0x06 /* Left output control */
+#define WSSR_MASTER_R 0x07 /* Right output control */
+#define WSSR_PLAY_FORMAT 0x08 /* Clock and data format */
+#define WSSR_IFACE_CTRL 0x09 /* Interface control */
+#define WSSR_PIN_CTRL 0x0a /* Pin control */
+#define WSSR_TEST_INIT 0x0b /* Test and initialization */
+#define WSSR_MISC_INFO 0x0c /* Miscellaneaous information */
+#define WSSR_LOOPBACK 0x0d /* Digital Mix */
+#define WSSR_COUNT_HIGH 0x0e /* Playback Upper Base Count */
+#define WSSR_COUNT_LOW 0x0f /* Playback Lower Base Count */
+#define WSSR_ALT_FEATURE_1 0x10 /* alternate #1 feature enable */
+#define WSSR_ALT_FEATURE_2 0x11 /* alternate #2 feature enable */
+#define WSSR_LINE_IN_L 0x12 /* left line input control */
+#define WSSR_LINE_IN_R 0x13 /* right line input control */
+#define WSSR_TIMER_LOW 0x14 /* timer low byte */
+#define WSSR_TIMER_HIGH 0x15 /* timer high byte */
+#define WSSR_IRQ_STATUS 0x18 /* irq status register */
+#define WSSR_MONO_IO_CTRL 0x1a /* mono input/output control */
+#define WSSR_REC_FORMAT 0x1c /* record format */
+#define WSSR_REC_COUNT_HIGH 0x1e /* record upper count */
+#define WSSR_REC_COUNT_LOW 0x1f /* record lower count */
+
+/* WSS_ADDR bits 7-5 definition */
+#define WSSM_INIT 0x80 /* Codec is initializing */
+#define WSSM_MCE 0x40 /* Mode change enable */
+#define WSSM_TRD 0x20 /* Transfer Request Disable */
+/* bits 4-0 are indirect register address (0-15) */
+
+/* WSS_STATUS bit masks */
+#define WSSM_CUL 0x80 /* Capture data upper/lower byte */
+#define WSSM_CLR 0x40 /* Capture left/right sample */
+#define WSSM_CRDY 0x20 /* Capture data read */
+#define WSSM_SOUR 0x10 /* Playback over/under run error */
+#define WSSM_PUL 0x08 /* Playback upper/lower byte */
+#define WSSM_PLR 0x04 /* Playback left/right sample */
+#define WSSM_PRDY 0x02 /* Playback data register read */
+#define WSSM_INT 0x01 /* interrupt status */
+
+/* Definitions for output level registers */
+#define WSSM_MUTE 0x80 /* Mute this output source */
+/* bits 5-0 are left output attenuation select (0-63) */
+/* bits 5-0 are right output attenuation select (0-63) */
+
+/* Definitions for clock and data format register (WSSR_PLAY_FORMAT) */
+#define WSSM_STEREO 0x10 /* stero mode */
+#define WSSM_ULAW_8 0x20 /* 8-bit U-law companded */
+#define WSSM_16BITS 0x40 /* 16 bit twos complement data - little endian */
+#define WSSM_ALAW_8 0x60 /* 8-bit A-law companded */
+#define WSSM_16BITS_BE 0xc0 /* 16-bit twos complement data - big endian */
+#define WSSM_ADPCM_16 0xa0 /* 16-bit ADPCM */
+/* Bits 3-1 define frequency divisor */
+#define WSSM_XTAL1 0x00 /* 24.576 crystal */
+#define WSSM_XTAL2 0x01 /* 16.9344 crystal */
+
+/* Definitions for interface control register (WSSR_IFACE_CTRL) */
+#define WSSM_CAPTURE_PIO 0x80 /* Capture PIO enable */
+#define WSSM_PLAYBACK_PIO 0x40 /* Playback PIO enable */
+#define WSSM_AUTOCALIB 0x08 /* auto calibrate */
+#define WSSM_SINGLE_DMA 0x04 /* Use single DMA channel */
+#define WSSM_PLAYBACK_ENABLE 0x01 /* playback enable */
+
+/* Definitions for Pin control register (WSSR_PIN_CTRL) */
+#define WSSM_IRQ_ENABLE 0x02 /* interrupt enable */
+#define WSSM_XCTL1 0x40 /* external control #1 */
+#define WSSM_XCTL0 0x80 /* external control #0 */
+
+/* Definitions for WSSR_TEST_INIT register */
+#define WSSM_CALIB_IN_PROGRESS 0x20 /* auto calibrate in progress */
+
+/* Definitions for misc control register (WSR_MISC_INFO) */
+#define WSSM_MODE2 0x40 /* MODE 2 */
+#define WSSM_MODE3 0x6c /* MODE 3 - enhanced mode */
+
+/* Definitions for codec irq status (WSSR_IRQ_STATUS) */
+#define WSSM_PLAYBACK_IRQ 0x10
+#define WSSM_RECORD_IRQ 0x20
+#define WSSM_TIMER_IRQ 0x40
+
+typedef unsigned char boolean;
+
+#ifndef FALSE
+#define FALSE 0
+#define TRUE 1
+#endif
+
+/* Play mode bits */
+#define WSSMODE_16BITS 0x0001
+#define WSSMODE_STEREO 0x0002
+#define WSSMODE_SIGNED 0x0004
+
+/* You can fill some members of this struct (i.e. port,irq,dma) before
+ * calling wss_detect() or wss_open()... this will ignore environment settings.
+ */
+typedef struct __wss_state_s {
+ boolean ok; /* Set if this structure is properly filled */
+ int port; /* Base codec port */
+ int irq; /* codec IRQ */
+ int dma; /* codec DMA */
+ struct irq_handle *irq_handle; /* The interrupt handler */
+ dma_buffer *dma_buff; /* Pre-allocated DMA buffer */
+ unsigned char mode; /* Current WSS mode (WSSMODE_XXX) */
+ boolean open; /* Whenever the card has been opened */
+ int samples; /* Number of samples in DMA buffer */
+ unsigned char level; /* Output level (63..0): doesn't change when mute */
+ unsigned char curlevel; /* Current output level (63(min)..0(max)) */
+ volatile int irqcount; /* Incremented on each IRQ... for diagnostics */
+ void (*timer_callback) (); /* Called TWICE per buffer play */
+} __wss_state;
+
+extern __wss_state wss;
+
+/* Wait until codec finishes initialization */
+static inline boolean __wss_wait()
+{
+ int count;
+ for (count = 10000; count >= 0; count--)
+ if (!(inportb(WSS_ADDR) & WSSM_INIT))
+ return TRUE;
+ return FALSE;
+}
+
+static inline void __wss_outreg(unsigned char reg, unsigned char val)
+{
+ outportb(WSS_ADDR, reg);
+ outportb(WSS_DATA, val);
+}
+
+static inline unsigned char __wss_inreg(unsigned char reg)
+{
+ outportb(WSS_ADDR, reg);
+ return inportb(WSS_DATA);
+}
+
+/* Set some bits in a specific register */
+static inline void __wss_regbit_set(unsigned char reg, unsigned char mask)
+{
+ outportb(WSS_ADDR, reg);
+ outportb(WSS_DATA, inportb(WSS_DATA) | mask);
+}
+
+/* Reset some bits in a specific register */
+static inline void __wss_regbit_reset(unsigned char reg, unsigned char mask)
+{
+ outportb(WSS_ADDR, reg);
+ outportb(WSS_DATA, inportb(WSS_DATA) & ~mask);
+}
+
+/* Detect whenever WSS is present and fill "wss" structure */
+extern boolean wss_detect();
+/* Reset WSS */
+extern void wss_reset();
+/* Open WSS for usage */
+extern boolean wss_open();
+/* Finish working with WSS */
+extern boolean wss_close();
+/* Enable/disable speaker output */
+extern void wss_output(boolean enable);
+/* Adjust frequency rate to nearest WSS available */
+extern unsigned int wss_adjust_freq(unsigned int freq);
+/* Start playing from DMA buffer in either 8/16 bit mono/stereo */
+extern boolean wss_start_dma(unsigned char mode, unsigned int freq);
+/* Stop playing from DMA buffer */
+extern void wss_stop_dma();
+/* Query current position/total size of the DMA buffer */
+extern void wss_query_dma(unsigned int *dma_size, unsigned int *dma_pos);
+/* Set output level (0(min)-63(max)) */
+extern void wss_level(int level);
+
+#endif /* __DOSWSS_H__ */
+
+/* ex:set ts=4: */
projects / dosdemo / blobdiff