LXR qemu/hw/audio/lm4549.h

   1/*
   2 * LM4549 Audio Codec Interface
   3 *
   4 * Copyright (c) 2011
   5 * Written by Mathieu Sonet - www.elasticsheep.com
   6 *
   7 * This code is licensed under the GPL.
   8 *
   9 * *****************************************************************
  10 */
  11
  12#ifndef HW_LM4549_H
  13#define HW_LM4549_H
  14
  15#include "audio/audio.h"
  16#include "exec/hwaddr.h"
  17
  18typedef void (*lm4549_callback)(void *opaque);
  19
  20#define LM4549_BUFFER_SIZE (512 * 2) /* 512 16-bit stereo samples */
  21
  22
  23typedef struct {
  24    QEMUSoundCard card;
  25    SWVoiceOut *voice;
  26    uint32_t voice_is_active;
  27
  28    uint16_t regfile[128];
  29    lm4549_callback data_req_cb;
  30    void *opaque;
  31
  32    uint16_t buffer[LM4549_BUFFER_SIZE];
  33    uint32_t buffer_level;
  34} lm4549_state;
  35
  36extern const VMStateDescription vmstate_lm4549_state;
  37
  38
  39void lm4549_init(lm4549_state *s, lm4549_callback data_req, void *opaque);
  40uint32_t lm4549_read(lm4549_state *s, hwaddr offset);
  41void lm4549_write(lm4549_state *s, hwaddr offset, uint32_t value);
  42uint32_t lm4549_write_samples(lm4549_state *s, uint32_t left, uint32_t right);
  43
  44#endif /* HW_LM4549_H */
  45