lm4549.h (1058B)
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 18 typedef void (*lm4549_callback)(void *opaque); 19 20 #define LM4549_BUFFER_SIZE (512 * 2) /* 512 16-bit stereo samples */ 21 22 23 typedef 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 36 extern const VMStateDescription vmstate_lm4549_state; 37 38 39 void lm4549_init(lm4549_state *s, lm4549_callback data_req, void *opaque); 40 uint32_t lm4549_read(lm4549_state *s, hwaddr offset); 41 void lm4549_write(lm4549_state *s, hwaddr offset, uint32_t value); 42 uint32_t lm4549_write_samples(lm4549_state *s, uint32_t left, uint32_t right); 43 44 #endif /* HW_LM4549_H */