CameraParameters.cpp revision 4bf7ace0d9d51cd47e00f92d26e1ee87909b3cc5
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"; 125const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 126 127// Formats for setPreviewFormat and setPictureFormat. 128const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 129const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 130const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 131const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 132const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 133 134// Values for focus mode settings. 135const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 136const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 137const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 138const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 139const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 140const char CameraParameters::FOCUS_MODE_CONTINUOUS[] = "continuous"; 141 142CameraParameters::CameraParameters() 143 : mMap() 144{ 145} 146 147CameraParameters::~CameraParameters() 148{ 149} 150 151String8 CameraParameters::flatten() const 152{ 153 String8 flattened(""); 154 size_t size = mMap.size(); 155 156 for (size_t i = 0; i < size; i++) { 157 String8 k, v; 158 k = mMap.keyAt(i); 159 v = mMap.valueAt(i); 160 161 flattened += k; 162 flattened += "="; 163 flattened += v; 164 if (i != size-1) 165 flattened += ";"; 166 } 167 168 return flattened; 169} 170 171void CameraParameters::unflatten(const String8 ¶ms) 172{ 173 const char *a = params.string(); 174 const char *b; 175 176 mMap.clear(); 177 178 for (;;) { 179 // Find the bounds of the key name. 180 b = strchr(a, '='); 181 if (b == 0) 182 break; 183 184 // Create the key string. 185 String8 k(a, (size_t)(b-a)); 186 187 // Find the value. 188 a = b+1; 189 b = strchr(a, ';'); 190 if (b == 0) { 191 // If there's no semicolon, this is the last item. 192 String8 v(a); 193 mMap.add(k, v); 194 break; 195 } 196 197 String8 v(a, (size_t)(b-a)); 198 mMap.add(k, v); 199 a = b+1; 200 } 201} 202 203 204void CameraParameters::set(const char *key, const char *value) 205{ 206 // XXX i think i can do this with strspn() 207 if (strchr(key, '=') || strchr(key, ';')) { 208 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 209 return; 210 } 211 212 if (strchr(value, '=') || strchr(key, ';')) { 213 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 214 return; 215 } 216 217 mMap.replaceValueFor(String8(key), String8(value)); 218} 219 220void CameraParameters::set(const char *key, int value) 221{ 222 char str[16]; 223 sprintf(str, "%d", value); 224 set(key, str); 225} 226 227void CameraParameters::setFloat(const char *key, float value) 228{ 229 char str[16]; // 14 should be enough. We overestimate to be safe. 230 snprintf(str, sizeof(str), "%g", value); 231 set(key, str); 232} 233 234const char *CameraParameters::get(const char *key) const 235{ 236 String8 v = mMap.valueFor(String8(key)); 237 if (v.length() == 0) 238 return 0; 239 return v.string(); 240} 241 242int CameraParameters::getInt(const char *key) const 243{ 244 const char *v = get(key); 245 if (v == 0) 246 return -1; 247 return strtol(v, 0, 0); 248} 249 250float CameraParameters::getFloat(const char *key) const 251{ 252 const char *v = get(key); 253 if (v == 0) return -1; 254 return strtof(v, 0); 255} 256 257static int parse_size(const char *str, int &width, int &height) 258{ 259 // Find the width. 260 char *end; 261 int w = (int)strtol(str, &end, 10); 262 // If an 'x' does not immediately follow, give up. 263 if (*end != 'x') 264 return -1; 265 266 // Find the height, immediately after the 'x'. 267 int h = (int)strtol(end+1, 0, 10); 268 269 width = w; 270 height = h; 271 272 return 0; 273} 274 275void CameraParameters::setPreviewSize(int width, int height) 276{ 277 char str[32]; 278 sprintf(str, "%dx%d", width, height); 279 set(KEY_PREVIEW_SIZE, str); 280} 281 282void CameraParameters::getPreviewSize(int *width, int *height) const 283{ 284 *width = -1; 285 *height = -1; 286 287 // Get the current string, if it doesn't exist, leave the -1x-1 288 const char *p = get(KEY_PREVIEW_SIZE); 289 if (p == 0) 290 return; 291 292 int w, h; 293 if (parse_size(p, w, h) == 0) { 294 *width = w; 295 *height = h; 296 } 297} 298 299void CameraParameters::setPreviewFrameRate(int fps) 300{ 301 set(KEY_PREVIEW_FRAME_RATE, fps); 302} 303 304int CameraParameters::getPreviewFrameRate() const 305{ 306 return getInt(KEY_PREVIEW_FRAME_RATE); 307} 308 309void CameraParameters::setPreviewFormat(const char *format) 310{ 311 set(KEY_PREVIEW_FORMAT, format); 312} 313 314const char *CameraParameters::getPreviewFormat() const 315{ 316 return get(KEY_PREVIEW_FORMAT); 317} 318 319void CameraParameters::setPictureSize(int width, int height) 320{ 321 char str[32]; 322 sprintf(str, "%dx%d", width, height); 323 set(KEY_PICTURE_SIZE, str); 324} 325 326void CameraParameters::getPictureSize(int *width, int *height) const 327{ 328 *width = -1; 329 *height = -1; 330 331 // Get the current string, if it doesn't exist, leave the -1x-1 332 const char *p = get(KEY_PICTURE_SIZE); 333 if (p == 0) 334 return; 335 336 int w, h; 337 if (parse_size(p, w, h) == 0) { 338 *width = w; 339 *height = h; 340 } 341} 342 343void CameraParameters::setPictureFormat(const char *format) 344{ 345 set(KEY_PICTURE_FORMAT, format); 346} 347 348const char *CameraParameters::getPictureFormat() const 349{ 350 return get(KEY_PICTURE_FORMAT); 351} 352 353void CameraParameters::dump() const 354{ 355 LOGD("dump: mMap.size = %d", mMap.size()); 356 for (size_t i = 0; i < mMap.size(); i++) { 357 String8 k, v; 358 k = mMap.keyAt(i); 359 v = mMap.valueAt(i); 360 LOGD("%s: %s\n", k.string(), v.string()); 361 } 362} 363 364status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 365{ 366 const size_t SIZE = 256; 367 char buffer[SIZE]; 368 String8 result; 369 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 370 result.append(buffer); 371 for (size_t i = 0; i < mMap.size(); i++) { 372 String8 k, v; 373 k = mMap.keyAt(i); 374 v = mMap.valueAt(i); 375 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 376 result.append(buffer); 377 } 378 write(fd, result.string(), result.size()); 379 return NO_ERROR; 380} 381 382}; // namespace android 383