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Linux Cross Reference
Linux/drivers/sound/vidc.h

Version: ~ [ 2.4.0 ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~ 
  1 /*
  2  *  linux/drivers/sound/vidc.h
  3  *
  4  *  Copyright (C) 1997 Russell King <rmk@arm.linux.org.uk>
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License version 2 as
  8  * published by the Free Software Foundation.
  9  *
 10  *  VIDC sound function prototypes
 11  */
 12 
 13 /* vidc.c */
 14 
 15 extern int vidc_busy;
 16 
 17 /* vidc_fill.S */
 18 
 19 /*
 20  * Filler routines for different channels and sample sizes
 21  */
 22 
 23 extern unsigned long vidc_fill_1x8_u(unsigned long ibuf, unsigned long iend,
 24                                      unsigned long obuf, int mask);
 25 extern unsigned long vidc_fill_2x8_u(unsigned long ibuf, unsigned long iend,
 26                                      unsigned long obuf, int mask);
 27 extern unsigned long vidc_fill_1x8_s(unsigned long ibuf, unsigned long iend,
 28                                      unsigned long obuf, int mask);
 29 extern unsigned long vidc_fill_2x8_s(unsigned long ibuf, unsigned long iend,
 30                                      unsigned long obuf, int mask);
 31 extern unsigned long vidc_fill_1x16_s(unsigned long ibuf, unsigned long iend,
 32                                       unsigned long obuf, int mask);
 33 extern unsigned long vidc_fill_2x16_s(unsigned long ibuf, unsigned long iend,
 34                                       unsigned long obuf, int mask);
 35 
 36 /*
 37  * DMA Interrupt handler
 38  */
 39 
 40 extern void vidc_sound_dma_irq(int irqnr, void *ref, struct pt_regs *regs);
 41 
 42 /*
 43  * Filler routine pointer
 44  */
 45 
 46 extern unsigned long (*vidc_filler) (unsigned long ibuf, unsigned long iend,
 47                                      unsigned long obuf, int mask);
 48 
 49 /*
 50  * Virtual DMA buffer exhausted
 51  */
 52 
 53 extern void     (*dma_interrupt) (void);
 54 
 55 /*
 56  * Virtual DMA buffer addresses
 57  */
 58 
 59 extern unsigned long dma_start, dma_count, dma_bufsize;
 60 extern unsigned long dma_buf[2], dma_pbuf[2];
 61 
 62 /* vidc_synth.c */
 63 
 64 extern void     vidc_synth_init(struct address_info *hw_config);
 65 extern void     vidc_synth_exit(struct address_info *hw_config);
 66 extern int      vidc_synth_get_volume(void);
 67 extern int      vidc_synth_set_volume(int vol);
 68
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