CameraParameters.cpp revision d8d888ea7c14715c2210c8dea1a623116c992264
1/* 2** 3** Copyright 2008, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#define LOG_TAG "CameraParams" 19#include <utils/Log.h> 20 21#include <string.h> 22#include <stdlib.h> 23#include <camera/CameraParameters.h> 24 25namespace android { 26// Parameter keys to communicate between camera application and driver. 27const char CameraParameters::KEY_PREVIEW_SIZE[] = "preview-size"; 28const char CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES[] = "preview-size-values"; 29const char CameraParameters::KEY_PREVIEW_FORMAT[] = "preview-format"; 30const char CameraParameters::KEY_SUPPORTED_PREVIEW_FORMATS[] = "preview-format-values"; 31const char CameraParameters::KEY_PREVIEW_FRAME_RATE[] = "preview-frame-rate"; 32const char CameraParameters::KEY_SUPPORTED_PREVIEW_FRAME_RATES[] = "preview-frame-rate-values"; 33const char CameraParameters::KEY_PICTURE_SIZE[] = "picture-size"; 34const char CameraParameters::KEY_SUPPORTED_PICTURE_SIZES[] = "picture-size-values"; 35const char CameraParameters::KEY_PICTURE_FORMAT[] = "picture-format"; 36const char CameraParameters::KEY_SUPPORTED_PICTURE_FORMATS[] = "picture-format-values"; 37const char CameraParameters::KEY_JPEG_THUMBNAIL_WIDTH[] = "jpeg-thumbnail-width"; 38const char CameraParameters::KEY_JPEG_THUMBNAIL_HEIGHT[] = "jpeg-thumbnail-height"; 39const char CameraParameters::KEY_SUPPORTED_JPEG_THUMBNAIL_SIZES[] = "jpeg-thumbnail-size-values"; 40const char CameraParameters::KEY_JPEG_THUMBNAIL_QUALITY[] = "jpeg-thumbnail-quality"; 41const char CameraParameters::KEY_JPEG_QUALITY[] = "jpeg-quality"; 42const char CameraParameters::KEY_ROTATION[] = "rotation"; 43const char CameraParameters::KEY_GPS_LATITUDE[] = "gps-latitude"; 44const char CameraParameters::KEY_GPS_LONGITUDE[] = "gps-longitude"; 45const char CameraParameters::KEY_GPS_ALTITUDE[] = "gps-altitude"; 46const char CameraParameters::KEY_GPS_TIMESTAMP[] = "gps-timestamp"; 47const char CameraParameters::KEY_GPS_PROCESSING_METHOD[] = "gps-processing-method"; 48const char CameraParameters::KEY_WHITE_BALANCE[] = "whitebalance"; 49const char CameraParameters::KEY_SUPPORTED_WHITE_BALANCE[] = "whitebalance-values"; 50const char CameraParameters::KEY_EFFECT[] = "effect"; 51const char CameraParameters::KEY_SUPPORTED_EFFECTS[] = "effect-values"; 52const char CameraParameters::KEY_ANTIBANDING[] = "antibanding"; 53const char CameraParameters::KEY_SUPPORTED_ANTIBANDING[] = "antibanding-values"; 54const char CameraParameters::KEY_SCENE_MODE[] = "scene-mode"; 55const char CameraParameters::KEY_SUPPORTED_SCENE_MODES[] = "scene-mode-values"; 56const char CameraParameters::KEY_FLASH_MODE[] = "flash-mode"; 57const char CameraParameters::KEY_SUPPORTED_FLASH_MODES[] = "flash-mode-values"; 58const char CameraParameters::KEY_FOCUS_MODE[] = "focus-mode"; 59const char CameraParameters::KEY_SUPPORTED_FOCUS_MODES[] = "focus-mode-values"; 60const char CameraParameters::KEY_FOCAL_LENGTH[] = "focal-length"; 61const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle"; 62const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle"; 63const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation"; 64const char CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION[] = "max-exposure-compensation"; 65const char CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION[] = "min-exposure-compensation"; 66const char CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP[] = "exposure-compensation-step"; 67const char CameraParameters::KEY_ZOOM[] = "zoom"; 68const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 69const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 70const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 71const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 72 73const char CameraParameters::TRUE[] = "true"; 74 75// Values for white balance settings. 76const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 77const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 78const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 79const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 80const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 81const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 82const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 83const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 84 85// Values for effect settings. 86const char CameraParameters::EFFECT_NONE[] = "none"; 87const char CameraParameters::EFFECT_MONO[] = "mono"; 88const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 89const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 90const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 91const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 92const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 93const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 94const char CameraParameters::EFFECT_AQUA[] = "aqua"; 95 96// Values for antibanding settings. 97const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 98const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 99const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 100const char CameraParameters::ANTIBANDING_OFF[] = "off"; 101 102// Values for flash mode settings. 103const char CameraParameters::FLASH_MODE_OFF[] = "off"; 104const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 105const char CameraParameters::FLASH_MODE_ON[] = "on"; 106const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 107const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 108 109// Values for scene mode settings. 110const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 111const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 112const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 113const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 114const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 115const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 116const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 117const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 118const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 119const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 120const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 121const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 122const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 123const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 124const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 125 126// Formats for setPreviewFormat and setPictureFormat. 127const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 128const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 129const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 130const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 131const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 132 133// Values for focus mode settings. 134const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 135const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 136const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 137const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 138 139CameraParameters::CameraParameters() 140 : mMap() 141{ 142} 143 144CameraParameters::~CameraParameters() 145{ 146} 147 148String8 CameraParameters::flatten() const 149{ 150 String8 flattened(""); 151 size_t size = mMap.size(); 152 153 for (size_t i = 0; i < size; i++) { 154 String8 k, v; 155 k = mMap.keyAt(i); 156 v = mMap.valueAt(i); 157 158 flattened += k; 159 flattened += "="; 160 flattened += v; 161 if (i != size-1) 162 flattened += ";"; 163 } 164 165 return flattened; 166} 167 168void CameraParameters::unflatten(const String8 ¶ms) 169{ 170 const char *a = params.string(); 171 const char *b; 172 173 mMap.clear(); 174 175 for (;;) { 176 // Find the bounds of the key name. 177 b = strchr(a, '='); 178 if (b == 0) 179 break; 180 181 // Create the key string. 182 String8 k(a, (size_t)(b-a)); 183 184 // Find the value. 185 a = b+1; 186 b = strchr(a, ';'); 187 if (b == 0) { 188 // If there's no semicolon, this is the last item. 189 String8 v(a); 190 mMap.add(k, v); 191 break; 192 } 193 194 String8 v(a, (size_t)(b-a)); 195 mMap.add(k, v); 196 a = b+1; 197 } 198} 199 200 201void CameraParameters::set(const char *key, const char *value) 202{ 203 // XXX i think i can do this with strspn() 204 if (strchr(key, '=') || strchr(key, ';')) { 205 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 206 return; 207 } 208 209 if (strchr(value, '=') || strchr(key, ';')) { 210 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 211 return; 212 } 213 214 mMap.replaceValueFor(String8(key), String8(value)); 215} 216 217void CameraParameters::set(const char *key, int value) 218{ 219 char str[16]; 220 sprintf(str, "%d", value); 221 set(key, str); 222} 223 224void CameraParameters::setFloat(const char *key, float value) 225{ 226 char str[16]; // 14 should be enough. We overestimate to be safe. 227 snprintf(str, sizeof(str), "%g", value); 228 set(key, str); 229} 230 231const char *CameraParameters::get(const char *key) const 232{ 233 String8 v = mMap.valueFor(String8(key)); 234 if (v.length() == 0) 235 return 0; 236 return v.string(); 237} 238 239int CameraParameters::getInt(const char *key) const 240{ 241 const char *v = get(key); 242 if (v == 0) 243 return -1; 244 return strtol(v, 0, 0); 245} 246 247float CameraParameters::getFloat(const char *key) const 248{ 249 const char *v = get(key); 250 if (v == 0) return -1; 251 return strtof(v, 0); 252} 253 254static int parse_size(const char *str, int &width, int &height) 255{ 256 // Find the width. 257 char *end; 258 int w = (int)strtol(str, &end, 10); 259 // If an 'x' does not immediately follow, give up. 260 if (*end != 'x') 261 return -1; 262 263 // Find the height, immediately after the 'x'. 264 int h = (int)strtol(end+1, 0, 10); 265 266 width = w; 267 height = h; 268 269 return 0; 270} 271 272void CameraParameters::setPreviewSize(int width, int height) 273{ 274 char str[32]; 275 sprintf(str, "%dx%d", width, height); 276 set(KEY_PREVIEW_SIZE, str); 277} 278 279void CameraParameters::getPreviewSize(int *width, int *height) const 280{ 281 *width = -1; 282 *height = -1; 283 284 // Get the current string, if it doesn't exist, leave the -1x-1 285 const char *p = get(KEY_PREVIEW_SIZE); 286 if (p == 0) 287 return; 288 289 int w, h; 290 if (parse_size(p, w, h) == 0) { 291 *width = w; 292 *height = h; 293 } 294} 295 296void CameraParameters::setPreviewFrameRate(int fps) 297{ 298 set(KEY_PREVIEW_FRAME_RATE, fps); 299} 300 301int CameraParameters::getPreviewFrameRate() const 302{ 303 return getInt(KEY_PREVIEW_FRAME_RATE); 304} 305 306void CameraParameters::setPreviewFormat(const char *format) 307{ 308 set(KEY_PREVIEW_FORMAT, format); 309} 310 311const char *CameraParameters::getPreviewFormat() const 312{ 313 return get(KEY_PREVIEW_FORMAT); 314} 315 316void CameraParameters::setPictureSize(int width, int height) 317{ 318 char str[32]; 319 sprintf(str, "%dx%d", width, height); 320 set(KEY_PICTURE_SIZE, str); 321} 322 323void CameraParameters::getPictureSize(int *width, int *height) const 324{ 325 *width = -1; 326 *height = -1; 327 328 // Get the current string, if it doesn't exist, leave the -1x-1 329 const char *p = get(KEY_PICTURE_SIZE); 330 if (p == 0) 331 return; 332 333 int w, h; 334 if (parse_size(p, w, h) == 0) { 335 *width = w; 336 *height = h; 337 } 338} 339 340void CameraParameters::setPictureFormat(const char *format) 341{ 342 set(KEY_PICTURE_FORMAT, format); 343} 344 345const char *CameraParameters::getPictureFormat() const 346{ 347 return get(KEY_PICTURE_FORMAT); 348} 349 350void CameraParameters::dump() const 351{ 352 LOGD("dump: mMap.size = %d", mMap.size()); 353 for (size_t i = 0; i < mMap.size(); i++) { 354 String8 k, v; 355 k = mMap.keyAt(i); 356 v = mMap.valueAt(i); 357 LOGD("%s: %s\n", k.string(), v.string()); 358 } 359} 360 361status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 362{ 363 const size_t SIZE = 256; 364 char buffer[SIZE]; 365 String8 result; 366 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 367 result.append(buffer); 368 for (size_t i = 0; i < mMap.size(); i++) { 369 String8 k, v; 370 k = mMap.keyAt(i); 371 v = mMap.valueAt(i); 372 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 373 result.append(buffer); 374 } 375 write(fd, result.string(), result.size()); 376 return NO_ERROR; 377} 378 379}; // namespace android 380