path: root/audio_hwsync.h (plain)
blob: 99bf8ae783415d3049a22b2b0aee4083f0b2b113

1	#ifndef _AUDIO_HWSYNC_H_
2	#define _AUDIO_HWSYNC_H_
3
4	#define TSYNC_FIRSTAPTS "/sys/class/tsync/firstapts"
5	#define TSYNC_PCRSCR "/sys/class/tsync/pts_pcrscr"
6	#define TSYNC_EVENT "/sys/class/tsync/event"
7	#define TSYNC_APTS "/sys/class/tsync/pts_audio"
8	#define SYSTIME_CORRECTION_THRESHOLD (90000*10/100)
9	#define NSEC_PER_SECOND 1000000000ULL
10	#define HW_SYNC_STATE_HEADER 0
11	#define HW_SYNC_STATE_BODY 1
12	#define HW_SYNC_STATE_RESYNC 2
13	#define APTS_DISCONTINUE_THRESHOLD (90000)
14	#define APTS_DISCONTINUE_THRESHOLD_MIN (90000/1000*100)
15	#define APTS_DISCONTINUE_THRESHOLD_MAX (5*90000)
16
17	typedef struct audio_hwsync {
18	uint8_t hw_sync_header[16];
19	size_t hw_sync_header_cnt;
20	int hw_sync_state;
21	size_t hw_sync_body_cnt;
22	int hw_sync_frame_size;
23	uint8_t hw_sync_body_buf[4096];
24	uint8_t body_align[64];
25	uint8_t body_align_cnt;
26	bool first_apts_flag;//flag to indicate set first apts
27	uint64_t first_apts;
28	uint64_t last_apts_from_header;
29	} audio_hwsync_t;
30	static inline bool hwsync_header_valid(uint8_t *header)
31	{
32	return (header[0] == 0x55) &&
33	(header[1] == 0x55) &&
34	(header[2] == 0x00) &&
35	(header[3] == 0x01);
36	}
37
38	static inline uint64_t hwsync_header_get_pts(uint8_t *header)
39	{
40	return (((uint64_t)header[8]) << 56) |
41	(((uint64_t)header[9]) << 48) |
42	(((uint64_t)header[10]) << 40) |
43	(((uint64_t)header[11]) << 32) |
44	(((uint64_t)header[12]) << 24) |
45	(((uint64_t)header[13]) << 16) |
46	(((uint64_t)header[14]) << 8) |
47	((uint64_t)header[15]);
48	}
49
50	static inline uint32_t hwsync_header_get_size(uint8_t *header)
51	{
52	return (((uint32_t)header[4]) << 24) |
53	(((uint32_t)header[5]) << 16) |
54	(((uint32_t)header[6]) << 8) |
55	((uint32_t)header[7]);
56	}
57
58	static inline uint64_t pts_abs(uint64_t a, uint64_t b)
59	{
60	if (a >= b)
61	return (a - b);
62	else
63	return (b - a);
64	}
65
66	struct aml_stream_out;
67
68	void aml_audio_hwsync_clear_status(struct aml_stream_out *out);
69	int aml_audio_hwsync_find_frame(struct aml_stream_out *out,
70	const void *in_buffer, size_t in_bytes, uint64_t *cur_pts, int *outsize);
71	#endif
72