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 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 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 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 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 } 108 109 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 } 115 116 static void libjpeg_term_source(j_decompress_ptr /*cinfo*/) {} 117 118 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 } 126 127 libjpeg_source_mgr::~libjpeg_source_mgr() {} 128 129 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 } 138 139 Decoder_libjpeg::~Decoder_libjpeg() 140 { 141 release(); 142 } 143 144 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 } 163 164 int Decoder_libjpeg::readDHTSize() 165 { 166 return sizeof(jpeg_odml_dht); 167 } 168 169 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 } 183 184 185 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
