path: root/amadec/omx_audio/DDP_mediasource.h (plain)
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1	#ifndef MEDIA_DDPMEDIASOURCE_H_
2	#define MEDIA_DDPMEDIASOURCE_H_
3
4	#include "MediaSource.h"
5	#include "DataSource.h"
6	#include "MediaBufferGroup.h"
7	#include "MetaData.h"
8	#include "audio_mediasource.h"
9
10	namespace android {
11
12	#define DDPshort short
13	#define DDPerr short
14	#define DDPushort unsigned short
15	#define BYTESPERWRD 2
16	#define BITSPERWRD (BYTESPERWRD*8)
17	#define SYNCWRD ((DDPshort)0x0b77)
18	#define MAXFSCOD 3
19	#define MAXDDDATARATE 38
20	#define BS_STD 8
21	#define ISDD(bsid) ((bsid) <= BS_STD)
22	#define MAXCHANCFGS 8
23	#define BS_AXE 16
24	#define ISDDP(bsid) ((bsid) <= BS_AXE && (bsid) > 10)
25	#define BS_BITOFFSET 40
26	#define PTR_HEAD_SIZE 7 //20
27	#define FRAME_RECORD_NUM 40
28	typedef struct {
29	DDPshort *buf;
30	DDPshort bitptr;
31	DDPshort data;
32	} DDP_BSTRM;
33
34	typedef struct {
35	unsigned char rawbuf[6144];
36	int len;
37	} BUF_T;
38
39	const DDPshort chanary[MAXCHANCFGS] = { 2, 1, 2, 3, 3, 4, 4, 5 };
40	enum { MODE11 = 0, MODE_RSVD = 0, MODE10, MODE20,
41	MODE30, MODE21, MODE31, MODE22, MODE32
42	};
43
44	const DDPushort msktab[] = {
45	0x0000, 0x8000, 0xc000, 0xe000,
46	0xf000, 0xf800, 0xfc00, 0xfe00,
47	0xff00, 0xff80, 0xffc0, 0xffe0,
48	0xfff0, 0xfff8, 0xfffc, 0xfffe, 0xffff
49	};
50
51	const DDPshort frmsizetab[MAXFSCOD][MAXDDDATARATE] = {
52	/* 48kHz */
53	{
54	64, 64, 80, 80, 96, 96, 112, 112,
55	128, 128, 160, 160, 192, 192, 224, 224,
56	256, 256, 320, 320, 384, 384, 448, 448,
57	512, 512, 640, 640, 768, 768, 896, 896,
58	1024, 1024, 1152, 1152, 1280, 1280},
59	/* 44.1kHz */
60	{
61	69, 70, 87, 88, 104, 105, 121, 122,
62	139, 140, 174, 175, 208, 209, 243, 244,
63	278, 279, 348, 349, 417, 418, 487, 488,
64	557, 558, 696, 697, 835, 836, 975, 976,
65	1114, 1115, 1253, 1254, 1393, 1394},
66	/* 32kHz */
67	{
68	96, 96, 120, 120, 144, 144, 168, 168,
69	192, 192, 240, 240, 288, 288, 336, 336,
70	384, 384, 480, 480, 576, 576, 672, 672,
71	768, 768, 960, 960, 1152, 1152, 1344, 1344,
72	1536, 1536, 1728, 1728, 1920, 1920}
73	};
74
75	typedef int (*fp_read_buffer) (unsigned char *, int);
76
77	class DDP_MediaSource:public AudioMediaSource {
78	public:
79	DDP_MediaSource(void *read_buffer);
80
81	status_t start(MetaData * params = NULL);
82	status_t stop();
83	sp < MetaData > getFormat();
84	status_t read(MediaBuffer ** buffer,
85	const ReadOptions * options = NULL);
86
87	int GetReadedBytes();
88	int GetSampleRate();
89	int GetChNum();
90	virtual int GetChNumOriginal();
91	int *Get_pStop_ReadBuf_Flag();
92	int Set_pStop_ReadBuf_Flag(int *pStop);
93
94	int SetReadedBytes(int size);
95	int MediaSourceRead_buffer(unsigned char *buffer, int size);
96
97	fp_read_buffer fpread_buffer;
98
99	//----------------------------------------
100	DDPerr ddbs_init(DDPshort * buf, DDPshort bitptr,
101	DDP_BSTRM * p_bstrm);
102	DDPerr ddbs_unprj(DDP_BSTRM * p_bstrm, DDPshort * p_data,
103	DDPshort numbits);
104	int Get_ChNum_DD(void *buf);
105	int Get_ChNum_DDP(void *buf);
106	DDPerr ddbs_skip(DDP_BSTRM * p_bstrm, DDPshort numbits);
107	DDPerr ddbs_getbsid(DDP_BSTRM * p_inbstrm, DDPshort * p_bsid);
108	int Get_ChNum_AC3_Frame(void *buf);
109	int get_frame_size(void);
110	void store_frame_size(int lastFrameLen);
111	//---------------------------------------
112
113	int sample_rate;
114	int ChNum;
115	int frame_size;
116	BUF_T frame;
117	int64_t bytes_readed_sum_pre;
118	int64_t bytes_readed_sum;
119	int extractor_cost_bytes;
120	int extractor_cost_bytes_last;
121	int *pStop_ReadBuf_Flag;
122	int ChNumOriginal;
123	int frame_length_his[FRAME_RECORD_NUM];
124	protected:
125	virtual ~ DDP_MediaSource();
126
127	private:
128	bool mStarted;
129	sp < DataSource > mDataSource;
130	sp < MetaData > mMeta;
131	MediaBufferGroup *mGroup;
132	int64_t mCurrentTimeUs;
133	int mBytesReaded;
134
135	DDP_MediaSource(const DDP_MediaSource &);
136	DDP_MediaSource & operator=(const DDP_MediaSource &);
137	};
138
139	}
140
141	#endif
142