CameraParameters.cpp revision 09a2ab9dfe5c8fe74703b9894d930b1b1dbf0c11
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"; 72const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances"; 73 74const char CameraParameters::TRUE[] = "true"; 75const char CameraParameters::INFINITY[] = "Infinity"; 76 77// Values for white balance settings. 78const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 79const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 80const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 81const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 82const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 83const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 84const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 85const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 86 87// Values for effect settings. 88const char CameraParameters::EFFECT_NONE[] = "none"; 89const char CameraParameters::EFFECT_MONO[] = "mono"; 90const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 91const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 92const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 93const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 94const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 95const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 96const char CameraParameters::EFFECT_AQUA[] = "aqua"; 97 98// Values for antibanding settings. 99const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 100const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 101const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 102const char CameraParameters::ANTIBANDING_OFF[] = "off"; 103 104// Values for flash mode settings. 105const char CameraParameters::FLASH_MODE_OFF[] = "off"; 106const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 107const char CameraParameters::FLASH_MODE_ON[] = "on"; 108const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 109const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 110 111// Values for scene mode settings. 112const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 113const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 114const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 115const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 116const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 117const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 118const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 119const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 120const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 121const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 122const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 123const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 124const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 125const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 126const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 127const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 128 129// Formats for setPreviewFormat and setPictureFormat. 130const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 131const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 132const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 133const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 134const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 135 136// Values for focus mode settings. 137const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 138const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 139const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 140const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 141const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 142const char CameraParameters::FOCUS_MODE_CONTINUOUS[] = "continuous"; 143 144CameraParameters::CameraParameters() 145 : mMap() 146{ 147} 148 149CameraParameters::~CameraParameters() 150{ 151} 152 153String8 CameraParameters::flatten() const 154{ 155 String8 flattened(""); 156 size_t size = mMap.size(); 157 158 for (size_t i = 0; i < size; i++) { 159 String8 k, v; 160 k = mMap.keyAt(i); 161 v = mMap.valueAt(i); 162 163 flattened += k; 164 flattened += "="; 165 flattened += v; 166 if (i != size-1) 167 flattened += ";"; 168 } 169 170 return flattened; 171} 172 173void CameraParameters::unflatten(const String8 ¶ms) 174{ 175 const char *a = params.string(); 176 const char *b; 177 178 mMap.clear(); 179 180 for (;;) { 181 // Find the bounds of the key name. 182 b = strchr(a, '='); 183 if (b == 0) 184 break; 185 186 // Create the key string. 187 String8 k(a, (size_t)(b-a)); 188 189 // Find the value. 190 a = b+1; 191 b = strchr(a, ';'); 192 if (b == 0) { 193 // If there's no semicolon, this is the last item. 194 String8 v(a); 195 mMap.add(k, v); 196 break; 197 } 198 199 String8 v(a, (size_t)(b-a)); 200 mMap.add(k, v); 201 a = b+1; 202 } 203} 204 205 206void CameraParameters::set(const char *key, const char *value) 207{ 208 // XXX i think i can do this with strspn() 209 if (strchr(key, '=') || strchr(key, ';')) { 210 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 211 return; 212 } 213 214 if (strchr(value, '=') || strchr(key, ';')) { 215 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 216 return; 217 } 218 219 mMap.replaceValueFor(String8(key), String8(value)); 220} 221 222void CameraParameters::set(const char *key, int value) 223{ 224 char str[16]; 225 sprintf(str, "%d", value); 226 set(key, str); 227} 228 229void CameraParameters::setFloat(const char *key, float value) 230{ 231 char str[16]; // 14 should be enough. We overestimate to be safe. 232 snprintf(str, sizeof(str), "%g", value); 233 set(key, str); 234} 235 236const char *CameraParameters::get(const char *key) const 237{ 238 String8 v = mMap.valueFor(String8(key)); 239 if (v.length() == 0) 240 return 0; 241 return v.string(); 242} 243 244int CameraParameters::getInt(const char *key) const 245{ 246 const char *v = get(key); 247 if (v == 0) 248 return -1; 249 return strtol(v, 0, 0); 250} 251 252float CameraParameters::getFloat(const char *key) const 253{ 254 const char *v = get(key); 255 if (v == 0) return -1; 256 return strtof(v, 0); 257} 258 259void CameraParameters::remove(const char *key) 260{ 261 mMap.removeItem(String8(key)); 262} 263 264static int parse_size(const char *str, int &width, int &height) 265{ 266 // Find the width. 267 char *end; 268 int w = (int)strtol(str, &end, 10); 269 // If an 'x' does not immediately follow, give up. 270 if (*end != 'x') 271 return -1; 272 273 // Find the height, immediately after the 'x'. 274 int h = (int)strtol(end+1, 0, 10); 275 276 width = w; 277 height = h; 278 279 return 0; 280} 281 282void CameraParameters::setPreviewSize(int width, int height) 283{ 284 char str[32]; 285 sprintf(str, "%dx%d", width, height); 286 set(KEY_PREVIEW_SIZE, str); 287} 288 289void CameraParameters::getPreviewSize(int *width, int *height) const 290{ 291 *width = -1; 292 *height = -1; 293 294 // Get the current string, if it doesn't exist, leave the -1x-1 295 const char *p = get(KEY_PREVIEW_SIZE); 296 if (p == 0) 297 return; 298 299 int w, h; 300 if (parse_size(p, w, h) == 0) { 301 *width = w; 302 *height = h; 303 } 304} 305 306void CameraParameters::setPreviewFrameRate(int fps) 307{ 308 set(KEY_PREVIEW_FRAME_RATE, fps); 309} 310 311int CameraParameters::getPreviewFrameRate() const 312{ 313 return getInt(KEY_PREVIEW_FRAME_RATE); 314} 315 316void CameraParameters::setPreviewFormat(const char *format) 317{ 318 set(KEY_PREVIEW_FORMAT, format); 319} 320 321const char *CameraParameters::getPreviewFormat() const 322{ 323 return get(KEY_PREVIEW_FORMAT); 324} 325 326void CameraParameters::setPictureSize(int width, int height) 327{ 328 char str[32]; 329 sprintf(str, "%dx%d", width, height); 330 set(KEY_PICTURE_SIZE, str); 331} 332 333void CameraParameters::getPictureSize(int *width, int *height) const 334{ 335 *width = -1; 336 *height = -1; 337 338 // Get the current string, if it doesn't exist, leave the -1x-1 339 const char *p = get(KEY_PICTURE_SIZE); 340 if (p == 0) 341 return; 342 343 int w, h; 344 if (parse_size(p, w, h) == 0) { 345 *width = w; 346 *height = h; 347 } 348} 349 350void CameraParameters::setPictureFormat(const char *format) 351{ 352 set(KEY_PICTURE_FORMAT, format); 353} 354 355const char *CameraParameters::getPictureFormat() const 356{ 357 return get(KEY_PICTURE_FORMAT); 358} 359 360void CameraParameters::dump() const 361{ 362 LOGD("dump: mMap.size = %d", mMap.size()); 363 for (size_t i = 0; i < mMap.size(); i++) { 364 String8 k, v; 365 k = mMap.keyAt(i); 366 v = mMap.valueAt(i); 367 LOGD("%s: %s\n", k.string(), v.string()); 368 } 369} 370 371status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 372{ 373 const size_t SIZE = 256; 374 char buffer[SIZE]; 375 String8 result; 376 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 377 result.append(buffer); 378 for (size_t i = 0; i < mMap.size(); i++) { 379 String8 k, v; 380 k = mMap.keyAt(i); 381 v = mMap.valueAt(i); 382 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 383 result.append(buffer); 384 } 385 write(fd, result.string(), result.size()); 386 return NO_ERROR; 387} 388 389}; // namespace android 390