CameraParameters.cpp revision 0b0279e0d20a8beb69aa2af5f4cb278841710dfb
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"; 73const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format"; 74 75const char CameraParameters::TRUE[] = "true"; 76const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 77 78// Values for white balance settings. 79const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 80const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 81const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 82const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 83const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 84const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 85const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 86const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 87 88// Values for effect settings. 89const char CameraParameters::EFFECT_NONE[] = "none"; 90const char CameraParameters::EFFECT_MONO[] = "mono"; 91const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 92const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 93const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 94const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 95const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 96const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 97const char CameraParameters::EFFECT_AQUA[] = "aqua"; 98 99// Values for antibanding settings. 100const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 101const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 102const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 103const char CameraParameters::ANTIBANDING_OFF[] = "off"; 104 105// Values for flash mode settings. 106const char CameraParameters::FLASH_MODE_OFF[] = "off"; 107const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 108const char CameraParameters::FLASH_MODE_ON[] = "on"; 109const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 110const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 111 112// Values for scene mode settings. 113const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 114const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 115const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 116const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 117const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 118const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 119const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 120const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 121const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 122const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 123const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 124const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 125const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 126const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 127const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 128const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 129 130// Formats for setPreviewFormat and setPictureFormat. 131const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 132const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 133const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 134const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 135const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 136 137// Values for focus mode settings. 138const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 139const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 140const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 141const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 142const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 143const char CameraParameters::FOCUS_MODE_CONTINUOUS[] = "continuous"; 144 145CameraParameters::CameraParameters() 146 : mMap() 147{ 148} 149 150CameraParameters::~CameraParameters() 151{ 152} 153 154String8 CameraParameters::flatten() const 155{ 156 String8 flattened(""); 157 size_t size = mMap.size(); 158 159 for (size_t i = 0; i < size; i++) { 160 String8 k, v; 161 k = mMap.keyAt(i); 162 v = mMap.valueAt(i); 163 164 flattened += k; 165 flattened += "="; 166 flattened += v; 167 if (i != size-1) 168 flattened += ";"; 169 } 170 171 return flattened; 172} 173 174void CameraParameters::unflatten(const String8 ¶ms) 175{ 176 const char *a = params.string(); 177 const char *b; 178 179 mMap.clear(); 180 181 for (;;) { 182 // Find the bounds of the key name. 183 b = strchr(a, '='); 184 if (b == 0) 185 break; 186 187 // Create the key string. 188 String8 k(a, (size_t)(b-a)); 189 190 // Find the value. 191 a = b+1; 192 b = strchr(a, ';'); 193 if (b == 0) { 194 // If there's no semicolon, this is the last item. 195 String8 v(a); 196 mMap.add(k, v); 197 break; 198 } 199 200 String8 v(a, (size_t)(b-a)); 201 mMap.add(k, v); 202 a = b+1; 203 } 204} 205 206 207void CameraParameters::set(const char *key, const char *value) 208{ 209 // XXX i think i can do this with strspn() 210 if (strchr(key, '=') || strchr(key, ';')) { 211 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 212 return; 213 } 214 215 if (strchr(value, '=') || strchr(key, ';')) { 216 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 217 return; 218 } 219 220 mMap.replaceValueFor(String8(key), String8(value)); 221} 222 223void CameraParameters::set(const char *key, int value) 224{ 225 char str[16]; 226 sprintf(str, "%d", value); 227 set(key, str); 228} 229 230void CameraParameters::setFloat(const char *key, float value) 231{ 232 char str[16]; // 14 should be enough. We overestimate to be safe. 233 snprintf(str, sizeof(str), "%g", value); 234 set(key, str); 235} 236 237const char *CameraParameters::get(const char *key) const 238{ 239 String8 v = mMap.valueFor(String8(key)); 240 if (v.length() == 0) 241 return 0; 242 return v.string(); 243} 244 245int CameraParameters::getInt(const char *key) const 246{ 247 const char *v = get(key); 248 if (v == 0) 249 return -1; 250 return strtol(v, 0, 0); 251} 252 253float CameraParameters::getFloat(const char *key) const 254{ 255 const char *v = get(key); 256 if (v == 0) return -1; 257 return strtof(v, 0); 258} 259 260void CameraParameters::remove(const char *key) 261{ 262 mMap.removeItem(String8(key)); 263} 264 265static int parse_size(const char *str, int &width, int &height) 266{ 267 // Find the width. 268 char *end; 269 int w = (int)strtol(str, &end, 10); 270 // If an 'x' does not immediately follow, give up. 271 if (*end != 'x') 272 return -1; 273 274 // Find the height, immediately after the 'x'. 275 int h = (int)strtol(end+1, 0, 10); 276 277 width = w; 278 height = h; 279 280 return 0; 281} 282 283void CameraParameters::setPreviewSize(int width, int height) 284{ 285 char str[32]; 286 sprintf(str, "%dx%d", width, height); 287 set(KEY_PREVIEW_SIZE, str); 288} 289 290void CameraParameters::getPreviewSize(int *width, int *height) const 291{ 292 *width = -1; 293 *height = -1; 294 295 // Get the current string, if it doesn't exist, leave the -1x-1 296 const char *p = get(KEY_PREVIEW_SIZE); 297 if (p == 0) 298 return; 299 300 int w, h; 301 if (parse_size(p, w, h) == 0) { 302 *width = w; 303 *height = h; 304 } 305} 306 307void CameraParameters::setPreviewFrameRate(int fps) 308{ 309 set(KEY_PREVIEW_FRAME_RATE, fps); 310} 311 312int CameraParameters::getPreviewFrameRate() const 313{ 314 return getInt(KEY_PREVIEW_FRAME_RATE); 315} 316 317void CameraParameters::setPreviewFormat(const char *format) 318{ 319 set(KEY_PREVIEW_FORMAT, format); 320} 321 322const char *CameraParameters::getPreviewFormat() const 323{ 324 return get(KEY_PREVIEW_FORMAT); 325} 326 327void CameraParameters::setPictureSize(int width, int height) 328{ 329 char str[32]; 330 sprintf(str, "%dx%d", width, height); 331 set(KEY_PICTURE_SIZE, str); 332} 333 334void CameraParameters::getPictureSize(int *width, int *height) const 335{ 336 *width = -1; 337 *height = -1; 338 339 // Get the current string, if it doesn't exist, leave the -1x-1 340 const char *p = get(KEY_PICTURE_SIZE); 341 if (p == 0) 342 return; 343 344 int w, h; 345 if (parse_size(p, w, h) == 0) { 346 *width = w; 347 *height = h; 348 } 349} 350 351void CameraParameters::setPictureFormat(const char *format) 352{ 353 set(KEY_PICTURE_FORMAT, format); 354} 355 356const char *CameraParameters::getPictureFormat() const 357{ 358 return get(KEY_PICTURE_FORMAT); 359} 360 361void CameraParameters::dump() const 362{ 363 LOGD("dump: mMap.size = %d", mMap.size()); 364 for (size_t i = 0; i < mMap.size(); i++) { 365 String8 k, v; 366 k = mMap.keyAt(i); 367 v = mMap.valueAt(i); 368 LOGD("%s: %s\n", k.string(), v.string()); 369 } 370} 371 372status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 373{ 374 const size_t SIZE = 256; 375 char buffer[SIZE]; 376 String8 result; 377 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 378 result.append(buffer); 379 for (size_t i = 0; i < mMap.size(); i++) { 380 String8 k, v; 381 k = mMap.keyAt(i); 382 v = mMap.valueAt(i); 383 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 384 result.append(buffer); 385 } 386 write(fd, result.string(), result.size()); 387 return NO_ERROR; 388} 389 390}; // namespace android 391