LXR linux/sound/oss/vidc.h

   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_fill.S */
  14
  15/*
  16 * Filler routines for different channels and sample sizes
  17 */
  18
  19extern unsigned long vidc_fill_1x8_u(unsigned long ibuf, unsigned long iend,
  20                                     unsigned long obuf, int mask);
  21extern unsigned long vidc_fill_2x8_u(unsigned long ibuf, unsigned long iend,
  22                                     unsigned long obuf, int mask);
  23extern unsigned long vidc_fill_1x8_s(unsigned long ibuf, unsigned long iend,
  24                                     unsigned long obuf, int mask);
  25extern unsigned long vidc_fill_2x8_s(unsigned long ibuf, unsigned long iend,
  26                                     unsigned long obuf, int mask);
  27extern unsigned long vidc_fill_1x16_s(unsigned long ibuf, unsigned long iend,
  28                                      unsigned long obuf, int mask);
  29extern unsigned long vidc_fill_2x16_s(unsigned long ibuf, unsigned long iend,
  30                                      unsigned long obuf, int mask);
  31
  32/*
  33 * DMA Interrupt handler
  34 */
  35
  36extern irqreturn_t vidc_sound_dma_irq(int irqnr, void *ref);
  37
  38/*
  39 * Filler routine pointer
  40 */
  41
  42extern unsigned long (*vidc_filler) (unsigned long ibuf, unsigned long iend,
  43                                     unsigned long obuf, int mask);
  44
  45/*
  46 * Virtual DMA buffer exhausted
  47 */
  48
  49extern irqreturn_t (*dma_interrupt) (void);
  50
  51/*
  52 * Virtual DMA buffer addresses
  53 */
  54
  55extern unsigned long dma_start, dma_count, dma_bufsize;
  56extern unsigned long dma_buf[2], dma_pbuf[2];
  57
  58/* vidc_synth.c */
  59
  60extern void     vidc_synth_init(struct address_info *hw_config);
  61extern void     vidc_synth_exit(struct address_info *hw_config);
  62extern int      vidc_synth_get_volume(void);
  63extern int      vidc_synth_set_volume(int vol);
  64