1#ifndef JPEG_H
2#define JPEG_H 1
3
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33static const u8 jpeg_head[] = {
34 0xff, 0xd8,
35
36
37 0xff, 0xdb, 0x00, 0x84,
380,
39#define JPEG_QT0_OFFSET 7
40 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
41 0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28,
42 0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
43 0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
44 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44,
45 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57,
46 0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
47 0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
481,
49#define JPEG_QT1_OFFSET 72
50 0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
51 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
52 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
53 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
54 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
55 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
56 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
57 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
58
59
60 0xff, 0xc4, 0x01, 0xa2,
61 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
62 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
63 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
64 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x01, 0x00, 0x03,
65 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
66 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
67 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
68 0x0a, 0x0b, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03,
69 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00,
70 0x00, 0x01, 0x7d, 0x01, 0x02, 0x03, 0x00, 0x04,
71 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13,
72 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81,
73 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15,
74 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82,
75 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25,
76 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36,
77 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46,
78 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56,
79 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66,
80 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76,
81 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86,
82 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95,
83 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4,
84 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3,
85 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2,
86 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca,
87 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
88 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
89 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5,
90 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0x11, 0x00, 0x02,
91 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
92 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01,
93 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
94 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22,
95 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1,
96 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62,
97 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25,
98 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28,
99 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a,
100 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
101 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a,
102 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
103 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
104 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
105 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
106 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
107 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
108 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
109 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
110 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3,
111 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2,
112 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
113#ifdef CONEX_CAM
114
115#define JPEG_HDR_SZ 556
116#else
117 0xff, 0xc0, 0x00, 0x11,
118 0x08,
119#define JPEG_HEIGHT_OFFSET 561
120 0x01, 0xe0,
121 0x02, 0x80,
122 0x03,
123 0x01,
124 0x21,
125 0x00,
126 0x02, 0x11, 0x01,
127 0x03, 0x11, 0x01,
128
129 0xff, 0xda, 0x00, 0x0c,
130 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00
131#define JPEG_HDR_SZ 589
132#endif
133};
134
135
136static void jpeg_define(u8 *jpeg_hdr,
137 int height,
138 int width,
139 int samplesY)
140{
141 memcpy(jpeg_hdr, jpeg_head, sizeof jpeg_head);
142#ifndef CONEX_CAM
143 jpeg_hdr[JPEG_HEIGHT_OFFSET + 0] = height >> 8;
144 jpeg_hdr[JPEG_HEIGHT_OFFSET + 1] = height;
145 jpeg_hdr[JPEG_HEIGHT_OFFSET + 2] = width >> 8;
146 jpeg_hdr[JPEG_HEIGHT_OFFSET + 3] = width;
147 jpeg_hdr[JPEG_HEIGHT_OFFSET + 6] = samplesY;
148#endif
149}
150
151
152static void jpeg_set_qual(u8 *jpeg_hdr,
153 int quality)
154{
155 int i, sc;
156
157 if (quality < 50)
158 sc = 5000 / quality;
159 else
160 sc = 200 - quality * 2;
161 for (i = 0; i < 64; i++) {
162 jpeg_hdr[JPEG_QT0_OFFSET + i] =
163 (jpeg_head[JPEG_QT0_OFFSET + i] * sc + 50) / 100;
164 jpeg_hdr[JPEG_QT1_OFFSET + i] =
165 (jpeg_head[JPEG_QT1_OFFSET + i] * sc + 50) / 100;
166 }
167}
168#endif
169