1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "Decoder_libjpeg.h"
18
19 extern "C" {
20 #include "jpeglib.h"
21 #include "jerror.h"
22 }
23
24 #define NUM_COMPONENTS_IN_YUV 3
25
26 namespace Ti {
27 namespace Camera {
28
29 /* JPEG DHT Segment omitted from MJPEG data */
30 static unsigned char jpeg_odml_dht[0x1a6] = {
31 0xff, 0xd8, /* Start of Image */
32 0xff, 0xc4, 0x01, 0xa2, /* Define Huffman Table */
33
34 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
35 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
36
37 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
38 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
39
40 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
41 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
42 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
43 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
44 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
45 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
46 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
47 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
48 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
49 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
50 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
51 0xf9, 0xfa,
52
53 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77,
54 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
55 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
56 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
57 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
58 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
59 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
60 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
61 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
62 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
63 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
64 0xf9, 0xfa
65 };
66
67 struct libjpeg_source_mgr : jpeg_source_mgr {
68 libjpeg_source_mgr(unsigned char *buffer_ptr, int len);
69 ~libjpeg_source_mgr();
70
71 unsigned char *mBufferPtr;
72 int mFilledLen;
73 };
74
libjpeg_init_source(j_decompress_ptr cinfo)75 static void libjpeg_init_source(j_decompress_ptr cinfo) {
76 libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
77 src->next_input_byte = (const JOCTET*)src->mBufferPtr;
78 src->bytes_in_buffer = 0;
79 src->current_offset = 0;
80 }
81
libjpeg_seek_input_data(j_decompress_ptr cinfo,long byte_offset)82 static boolean libjpeg_seek_input_data(j_decompress_ptr cinfo, long byte_offset) {
83 libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
84 src->current_offset = byte_offset;
85 src->next_input_byte = (const JOCTET*)src->mBufferPtr + byte_offset;
86 src->bytes_in_buffer = 0;
87 return TRUE;
88 }
89
libjpeg_fill_input_buffer(j_decompress_ptr cinfo)90 static boolean libjpeg_fill_input_buffer(j_decompress_ptr cinfo) {
91 libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
92 src->current_offset += src->mFilledLen;
93 src->next_input_byte = src->mBufferPtr;
94 src->bytes_in_buffer = src->mFilledLen;
95 return TRUE;
96 }
97
libjpeg_skip_input_data(j_decompress_ptr cinfo,long num_bytes)98 static void libjpeg_skip_input_data(j_decompress_ptr cinfo, long num_bytes) {
99 libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
100
101 if (num_bytes > (long)src->bytes_in_buffer) {
102 CAMHAL_LOGEA("\n\n\n libjpeg_skip_input_data - num_bytes > (long)src->bytes_in_buffer \n\n\n");
103 } else {
104 src->next_input_byte += num_bytes;
105 src->bytes_in_buffer -= num_bytes;
106 }
107 }
108
libjpeg_resync_to_restart(j_decompress_ptr cinfo,int desired)109 static boolean libjpeg_resync_to_restart(j_decompress_ptr cinfo, int desired) {
110 libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
111 src->next_input_byte = (const JOCTET*)src->mBufferPtr;
112 src->bytes_in_buffer = 0;
113 return TRUE;
114 }
115
libjpeg_term_source(j_decompress_ptr)116 static void libjpeg_term_source(j_decompress_ptr /*cinfo*/) {}
117
libjpeg_source_mgr(unsigned char * buffer_ptr,int len)118 libjpeg_source_mgr::libjpeg_source_mgr(unsigned char *buffer_ptr, int len) : mBufferPtr(buffer_ptr), mFilledLen(len) {
119 init_source = libjpeg_init_source;
120 fill_input_buffer = libjpeg_fill_input_buffer;
121 skip_input_data = libjpeg_skip_input_data;
122 resync_to_restart = libjpeg_resync_to_restart;
123 term_source = libjpeg_term_source;
124 seek_input_data = libjpeg_seek_input_data;
125 }
126
~libjpeg_source_mgr()127 libjpeg_source_mgr::~libjpeg_source_mgr() {}
128
Decoder_libjpeg()129 Decoder_libjpeg::Decoder_libjpeg()
130 {
131 mWidth = 0;
132 mHeight = 0;
133 Y_Plane = NULL;
134 U_Plane = NULL;
135 V_Plane = NULL;
136 UV_Plane = NULL;
137 }
138
~Decoder_libjpeg()139 Decoder_libjpeg::~Decoder_libjpeg()
140 {
141 release();
142 }
143
release()144 void Decoder_libjpeg::release()
145 {
146 if (Y_Plane) {
147 free(Y_Plane);
148 Y_Plane = NULL;
149 }
150 if (U_Plane) {
151 free(U_Plane);
152 U_Plane = NULL;
153 }
154 if (V_Plane) {
155 free(V_Plane);
156 V_Plane = NULL;
157 }
158 if (UV_Plane) {
159 free(UV_Plane);
160 UV_Plane = NULL;
161 }
162 }
163
readDHTSize()164 int Decoder_libjpeg::readDHTSize()
165 {
166 return sizeof(jpeg_odml_dht);
167 }
168
appendDHT(unsigned char * jpeg_src,int filled_len,unsigned char * jpeg_with_dht_buffer,int buff_size)169 int Decoder_libjpeg::appendDHT(unsigned char *jpeg_src, int filled_len, unsigned char *jpeg_with_dht_buffer, int buff_size)
170 {
171 /* Appending DHT to JPEG */
172
173 int len = filled_len + sizeof(jpeg_odml_dht) - 2; // final length of jpeg data
174 if (len > buff_size) {
175 CAMHAL_LOGEA("\n\n\n Buffer size too small. filled_len=%d, buff_size=%d, sizeof(jpeg_odml_dht)=%d\n\n\n", filled_len, buff_size, sizeof(jpeg_odml_dht));
176 return 0;
177 }
178
179 memcpy(jpeg_with_dht_buffer, jpeg_odml_dht, sizeof(jpeg_odml_dht));
180 memcpy((jpeg_with_dht_buffer + sizeof(jpeg_odml_dht)), jpeg_src + 2, (filled_len - 2));
181 return len;
182 }
183
184
decode(unsigned char * jpeg_src,int filled_len,unsigned char * nv12_buffer,int stride)185 bool Decoder_libjpeg::decode(unsigned char *jpeg_src, int filled_len, unsigned char *nv12_buffer, int stride)
186 {
187 struct jpeg_decompress_struct cinfo;
188 struct jpeg_error_mgr jerr;
189 struct libjpeg_source_mgr s_mgr(jpeg_src, filled_len);
190
191 if (filled_len == 0)
192 return false;
193
194 cinfo.err = jpeg_std_error(&jerr);
195 jpeg_create_decompress(&cinfo);
196
197 cinfo.src = &s_mgr;
198 int status = jpeg_read_header(&cinfo, true);
199 if (status != JPEG_HEADER_OK) {
200 CAMHAL_LOGEA("jpeg header corrupted");
201 return false;
202 }
203
204 cinfo.out_color_space = JCS_YCbCr;
205 cinfo.raw_data_out = true;
206 status = jpeg_start_decompress(&cinfo);
207 if (!status){
208 CAMHAL_LOGEA("jpeg_start_decompress failed");
209 return false;
210 }
211
212 if (mWidth == 0){
213 mWidth = cinfo.output_width;
214 mHeight = cinfo.output_height;
215 CAMHAL_LOGEA("w x h = %d x %d. stride=%d", cinfo.output_width, cinfo.output_height, stride);
216 }
217 else if ((cinfo.output_width > mWidth) || (cinfo.output_height > mHeight)) {
218 CAMHAL_LOGEA(" Free the existing buffers so that they are reallocated for new w x h. Old WxH = %dx%d. New WxH = %dx%d",
219 mWidth, mHeight, cinfo.output_width, cinfo.output_height);
220 release();
221 }
222
223 unsigned int decoded_uv_buffer_size = cinfo.output_width * cinfo.output_height / 2;
224 if (Y_Plane == NULL)Y_Plane = (unsigned char **)malloc(cinfo.output_height * sizeof(unsigned char *));
225 if (U_Plane == NULL)U_Plane = (unsigned char **)malloc(cinfo.output_height * sizeof(unsigned char *));
226 if (V_Plane == NULL)V_Plane = (unsigned char **)malloc(cinfo.output_height * sizeof(unsigned char *));
227 if (UV_Plane == NULL) UV_Plane = (unsigned char *)malloc(decoded_uv_buffer_size);
228
229 unsigned char **YUV_Planes[NUM_COMPONENTS_IN_YUV];
230 YUV_Planes[0] = Y_Plane;
231 YUV_Planes[1] = U_Plane;
232 YUV_Planes[2] = V_Plane;
233
234 unsigned char *row = &nv12_buffer[0];
235
236 // Y Component
237 for (unsigned int j = 0; j < cinfo.output_height; j++, row += stride)
238 YUV_Planes[0][j] = row;
239
240 row = &UV_Plane[0];
241
242 // U Component
243 for (unsigned int j = 0; j < cinfo.output_height; j+=2, row += cinfo.output_width / 2){
244 YUV_Planes[1][j+0] = row;
245 YUV_Planes[1][j+1] = row;
246 }
247
248 // V Component
249 for (unsigned int j = 0; j < cinfo.output_height; j+=2, row += cinfo.output_width / 2){
250 YUV_Planes[2][j+0] = row;
251 YUV_Planes[2][j+1] = row;
252 }
253
254 // Interleaving U and V
255 for (unsigned int i = 0; i < cinfo.output_height; i += 8) {
256 jpeg_read_raw_data(&cinfo, YUV_Planes, 8);
257 YUV_Planes[0] += 8;
258 YUV_Planes[1] += 8;
259 YUV_Planes[2] += 8;
260 }
261
262 unsigned char *uv_ptr = nv12_buffer + (stride * cinfo.output_height);
263 unsigned char *u_ptr = UV_Plane;
264 unsigned char *v_ptr = UV_Plane + (decoded_uv_buffer_size / 2);
265 for(unsigned int i = 0; i < cinfo.output_height / 2; i++){
266 for(unsigned int j = 0; j < cinfo.output_width; j+=2){
267 *(uv_ptr + j) = *u_ptr; u_ptr++;
268 *(uv_ptr + j + 1) = *v_ptr; v_ptr++;
269 }
270 uv_ptr = uv_ptr + stride;
271 }
272
273 jpeg_finish_decompress(&cinfo);
274 jpeg_destroy_decompress(&cinfo);
275
276 return true;
277 }
278
279 } // namespace Camera
280 } // namespace Ti
281
282