| /* |
| * linux/drivers/sound/vidc.h |
| * |
| * Copyright (C) 1997 Russell King <rmk@arm.linux.org.uk> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * VIDC sound function prototypes |
| */ |
| |
| /* vidc_fill.S */ |
| |
| /* |
| * Filler routines for different channels and sample sizes |
| */ |
| |
| extern unsigned long vidc_fill_1x8_u(unsigned long ibuf, unsigned long iend, |
| unsigned long obuf, int mask); |
| extern unsigned long vidc_fill_2x8_u(unsigned long ibuf, unsigned long iend, |
| unsigned long obuf, int mask); |
| extern unsigned long vidc_fill_1x8_s(unsigned long ibuf, unsigned long iend, |
| unsigned long obuf, int mask); |
| extern unsigned long vidc_fill_2x8_s(unsigned long ibuf, unsigned long iend, |
| unsigned long obuf, int mask); |
| extern unsigned long vidc_fill_1x16_s(unsigned long ibuf, unsigned long iend, |
| unsigned long obuf, int mask); |
| extern unsigned long vidc_fill_2x16_s(unsigned long ibuf, unsigned long iend, |
| unsigned long obuf, int mask); |
| |
| /* |
| * DMA Interrupt handler |
| */ |
| |
| extern irqreturn_t vidc_sound_dma_irq(int irqnr, void *ref); |
| |
| /* |
| * Filler routine pointer |
| */ |
| |
| extern unsigned long (*vidc_filler) (unsigned long ibuf, unsigned long iend, |
| unsigned long obuf, int mask); |
| |
| /* |
| * Virtual DMA buffer exhausted |
| */ |
| |
| extern irqreturn_t (*dma_interrupt) (void); |
| |
| /* |
| * Virtual DMA buffer addresses |
| */ |
| |
| extern unsigned long dma_start, dma_count, dma_bufsize; |
| extern unsigned long dma_buf[2], dma_pbuf[2]; |
| |
| /* vidc_synth.c */ |
| |
| extern void vidc_synth_init(struct address_info *hw_config); |
| extern void vidc_synth_exit(struct address_info *hw_config); |
| extern int vidc_synth_get_volume(void); |
| extern int vidc_synth_set_volume(int vol); |