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path: root/amadec/adec_read.c (plain)
blob: c1a9b573de9ec60efe2b8147aef787fd19ca2182
1#include <stdio.h>
2#include <string.h> // strcmp
3#include <time.h> // clock
4#include <fcntl.h>
5#include <unistd.h>
6
7#include <sys/mman.h>
8#include <audio-dec.h>
9#include <adec-pts-mgt.h>
10#include <amthreadpool.h>
11
12#include "Amsysfsutils.h"
13#include "amconfigutils.h"
14
15
16#define ASTREAM_DEV "/dev/uio0"
17#define ASTREAM_ADDR "/sys/class/astream/astream-dev/uio0/maps/map0/addr"
18#define ASTREAM_SIZE "/sys/class/astream/astream-dev/uio0/maps/map0/size"
19#define ASTREAM_OFFSET "/sys/class/astream/astream-dev/uio0/maps/map0/offset"
20#define ADDR_OFFSET "/sys/class/astream/addr_offset"
21
22
23#define AIU_AIFIFO_CTRL 0x1580
24#define AIU_AIFIFO_STATUS 0x1581
25#define AIU_AIFIFO_GBIT 0x1582
26#define AIU_AIFIFO_CLB 0x1583
27#define AIU_MEM_AIFIFO_START_PTR 0x1584
28#define AIU_MEM_AIFIFO_CURR_PTR 0x1585
29#define AIU_MEM_AIFIFO_END_PTR 0x1586
30#define AIU_MEM_AIFIFO_BYTES_AVAIL 0x1587
31#define AIU_MEM_AIFIFO_CONTROL 0x1588
32#define AIU_MEM_AIFIFO_MAN_WP 0x1589
33#define AIU_MEM_AIFIFO_MAN_RP 0x158a
34#define AIU_MEM_AIFIFO_LEVEL 0x158b
35#define AIU_MEM_AIFIFO_BUF_CNTL 0x158c
36#define AIU_MEM_AIFIFO_BUF_WRAP_COUNT 0x158d
37#define AIU_MEM_AIFIFO2_BUF_WRAP_COUNT 0x158e
38#define AIU_MEM_AIFIFO_MEM_CTL 0x158f
39
40volatile unsigned* reg_base = 0;
41#define READ_MPEG_REG(reg) reg_base[reg-AIU_AIFIFO_CTRL]
42#define WRITE_MPEG_REG(reg, val) reg_base[reg-AIU_AIFIFO_CTRL]=val
43#define AIFIFO_READY (((READ_MPEG_REG(AIU_MEM_AIFIFO_CONTROL)&(1<<9))))
44#define min(x,y) ((x<y)?(x):(y))
45
46static volatile void *memmap = MAP_FAILED;
47static int phys_size = 0;
48
49static unsigned long get_num_infile(char *file)
50{
51 return amsysfs_get_sysfs_ulong(file);
52}
53
54int uio_init(aml_audio_dec_t *audec)
55{
56 // int fd = -1;
57 int pagesize = getpagesize();
58 int phys_start;
59 // int phys_size;
60 int phys_offset;
61 // volatile unsigned memmap;
62 int addr_offset;
63
64
65 audec->fd_uio = open(ASTREAM_DEV, O_RDWR);
66 if (audec->fd_uio < 0) {
67 adec_print("error open UIO 0\n");
68 return -1;
69 }
70 phys_start = get_num_infile(ASTREAM_ADDR);
71 phys_size = get_num_infile(ASTREAM_SIZE);
72 phys_offset = get_num_infile(ASTREAM_OFFSET);
73 addr_offset = get_num_infile(ADDR_OFFSET);
74
75 adec_print("add=%08x, size=%08x, phy_offset=%08x, addr_offset=%d\n",
76 phys_start, phys_size, phys_offset, addr_offset);
77
78 phys_size = (phys_size + pagesize - 1) & (~(pagesize - 1));
79 memmap = mmap(NULL, phys_size, PROT_READ | PROT_WRITE, MAP_SHARED, audec->fd_uio, 0 * pagesize);
80
81 adec_print("memmap = %x , pagesize = %x\n", memmap, pagesize);
82 if (memmap == MAP_FAILED) {
83 adec_print("map /dev/uio0 failed\n");
84 return -1;
85 }
86 if (phys_offset == 0)
87 phys_offset = ((AIU_AIFIFO_CTRL + addr_offset) << 2) & (pagesize - 1);
88 reg_base = memmap + phys_offset;
89 return 0;
90}
91
92int uio_deinit(aml_audio_dec_t *audec)
93{
94 if (audec->fd_uio >= 0) {
95 close(audec->fd_uio);
96 }
97 audec->fd_uio = -1;
98
99 if (memmap != NULL && memmap != MAP_FAILED) {
100 munmap(memmap, phys_size);
101 }
102 adec_print("audio_dec_release done \n");
103 return 0;
104}
105
106
107static inline void waiting_bits(int bits)
108{
109 int bytes;
110 bytes = READ_MPEG_REG(AIU_MEM_AIFIFO_BYTES_AVAIL);
111 while (bytes * 8 < bits) {
112 if (amthreadpool_on_requare_exit(0)) {
113 break;
114 }
115 amthreadpool_thread_usleep(1000);
116 bytes = READ_MPEG_REG(AIU_MEM_AIFIFO_BYTES_AVAIL);
117 }
118}
119
120
121#define EXTRA_DATA_SIZE 128
122int read_buffer(unsigned char *buffer, int size)
123{
124 int bytes;
125 int len;
126 unsigned char *p = buffer;
127 int tmp;
128 int space;
129 int i;
130 int wait_times = 0, fifo_ready_wait = 0;
131
132 int iii;
133
134 iii = READ_MPEG_REG(AIU_MEM_AIFIFO_LEVEL) - EXTRA_DATA_SIZE;
135 // adec_print("read_buffer start iii = %d!!\n", iii);
136
137 static int cc = 0;
138 len = 0;
139#if 0
140 while (size >= iii) {
141 cc++ ;
142 amthreadpool_thread_usleep(1000);
143 iii = READ_MPEG_REG(AIU_MEM_AIFIFO_LEVEL) - EXTRA_DATA_SIZE;
144 if (cc % 2000 == 0) {
145 adec_print("read_buffer start in while iii = %d!!exit_decode_thread:%d \n", iii, exit_decode_thread);
146 }
147 if (exit_decode_thread) {
148 goto out;
149 }
150 }
151#endif
152 if ((size >= iii)) {
153 return 0;
154 }
155
156 // adec_print("read_buffer start while iii= %d!!\n", iii);
157 for (len = 0; len < size;) {
158 space = (size - len);
159 bytes = READ_MPEG_REG(AIU_MEM_AIFIFO_BYTES_AVAIL);
160 //adec_print("read_buffer start AIU_MEM_AIFIFO_BYTES_AVAIL bytes= %d!!\n", bytes);
161 wait_times = 0;
162 while (bytes == 0) {
163 waiting_bits((space > 128) ? 128 * 8 : (space * 8)); /*wait 32 bytes,if the space is less than 32 bytes,wait the space bits*/
164 bytes = READ_MPEG_REG(AIU_MEM_AIFIFO_BYTES_AVAIL);
165
166 adec_print("read_buffer while AIU_MEM_AIFIFO_BYTES_AVAIL = %d!!\n", bytes);
167 wait_times++;
168 if (wait_times > 10 || amthreadpool_on_requare_exit(0)) {
169 adec_print("goto out!!\n");
170 goto out;
171 }
172 }
173 bytes = min(space, bytes);
174
175 //adec_print("read_buffer while bytes = %d!!\n", bytes);
176 for (i = 0; i < bytes; i++) {
177 while (!AIFIFO_READY) {
178 fifo_ready_wait++;
179 amthreadpool_thread_usleep(1000);
180 if (fifo_ready_wait > 100 || amthreadpool_on_requare_exit(0)) {
181 adec_print("FATAL err,AIFIFO is not ready,check!!\n");
182 return 0;
183 }
184 }
185 WRITE_MPEG_REG(AIU_AIFIFO_GBIT, 8);
186 tmp = READ_MPEG_REG(AIU_AIFIFO_GBIT);
187 //adec_print("read_buffer while tmp = %d!!\n", tmp);
188
189 *p++ = tmp & 0xff;
190 fifo_ready_wait = 0;
191
192 }
193 len += bytes;
194 }
195out:
196 //stream_in_offset+=len;
197 return len;
198}
199
200
201
generated by cgit at 2024-05-13 00:03:20 (GMT)