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
  17typedef void (*lm4549_callback)(void *opaque);
  18
  19#define LM4549_BUFFER_SIZE (512 * 2) /* 512 16-bit stereo samples */
  20
  21
  22typedef struct {
  23    QEMUSoundCard card;
  24    SWVoiceOut *voice;
  25    uint32_t voice_is_active;
  26
  27    uint16_t regfile[128];
  28    lm4549_callback data_req_cb;
  29    void *opaque;
  30
  31    uint16_t buffer[LM4549_BUFFER_SIZE];
  32    uint32_t buffer_level;
  33} lm4549_state;
  34
  35extern const VMStateDescription vmstate_lm4549_state;
  36
  37
  38void lm4549_init(lm4549_state *s, lm4549_callback data_req, void *opaque);
  39uint32_t lm4549_read(lm4549_state *s, hwaddr offset);
  40void lm4549_write(lm4549_state *s, hwaddr offset, uint32_t value);
  41uint32_t lm4549_write_samples(lm4549_state *s, uint32_t left, uint32_t right);
  42
  43#endif /* #ifndef HW_LM4549_H */
  44