CameraParameters.cpp revision 949c5037a6e019ff575bd481d286908c2eaa1e34
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_WHITE_BALANCE[] = "whitebalance"; 48const char CameraParameters::KEY_SUPPORTED_WHITE_BALANCE[] = "whitebalance-values"; 49const char CameraParameters::KEY_EFFECT[] = "effect"; 50const char CameraParameters::KEY_SUPPORTED_EFFECTS[] = "effect-values"; 51const char CameraParameters::KEY_ANTIBANDING[] = "antibanding"; 52const char CameraParameters::KEY_SUPPORTED_ANTIBANDING[] = "antibanding-values"; 53const char CameraParameters::KEY_SCENE_MODE[] = "scene-mode"; 54const char CameraParameters::KEY_SUPPORTED_SCENE_MODES[] = "scene-mode-values"; 55const char CameraParameters::KEY_FLASH_MODE[] = "flash-mode"; 56const char CameraParameters::KEY_SUPPORTED_FLASH_MODES[] = "flash-mode-values"; 57const char CameraParameters::KEY_FOCUS_MODE[] = "focus-mode"; 58const char CameraParameters::KEY_SUPPORTED_FOCUS_MODES[] = "focus-mode-values"; 59const char CameraParameters::KEY_FOCAL_LENGTH[] = "focal-length"; 60const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle"; 61const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle"; 62const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation"; 63const char CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION[] = "max-exposure-compensation"; 64const char CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION[] = "min-exposure-compensation"; 65const char CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP[] = "exposure-compensation-step"; 66const char CameraParameters::KEY_ZOOM[] = "zoom"; 67const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 68const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 69const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 70const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 71 72// Values for white balance settings. 73const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 74const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 75const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 76const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 77const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 78const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 79const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 80const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 81 82// Values for effect settings. 83const char CameraParameters::EFFECT_NONE[] = "none"; 84const char CameraParameters::EFFECT_MONO[] = "mono"; 85const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 86const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 87const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 88const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 89const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 90const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 91const char CameraParameters::EFFECT_AQUA[] = "aqua"; 92 93// Values for antibanding settings. 94const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 95const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 96const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 97const char CameraParameters::ANTIBANDING_OFF[] = "off"; 98 99// Values for flash mode settings. 100const char CameraParameters::FLASH_MODE_OFF[] = "off"; 101const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 102const char CameraParameters::FLASH_MODE_ON[] = "on"; 103const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 104const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 105 106// Values for scene mode settings. 107const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 108const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 109const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 110const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 111const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 112const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 113const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 114const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 115const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 116const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 117const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 118const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 119const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 120const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 121const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 122 123// Formats for setPreviewFormat and setPictureFormat. 124const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 125const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 126const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 127const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 128const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 129 130// Values for focus mode settings. 131const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 132const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 133const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 134const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 135 136CameraParameters::CameraParameters() 137 : mMap() 138{ 139} 140 141CameraParameters::~CameraParameters() 142{ 143} 144 145String8 CameraParameters::flatten() const 146{ 147 String8 flattened(""); 148 size_t size = mMap.size(); 149 150 for (size_t i = 0; i < size; i++) { 151 String8 k, v; 152 k = mMap.keyAt(i); 153 v = mMap.valueAt(i); 154 155 flattened += k; 156 flattened += "="; 157 flattened += v; 158 if (i != size-1) 159 flattened += ";"; 160 } 161 162 return flattened; 163} 164 165void CameraParameters::unflatten(const String8 ¶ms) 166{ 167 const char *a = params.string(); 168 const char *b; 169 170 mMap.clear(); 171 172 for (;;) { 173 // Find the bounds of the key name. 174 b = strchr(a, '='); 175 if (b == 0) 176 break; 177 178 // Create the key string. 179 String8 k(a, (size_t)(b-a)); 180 181 // Find the value. 182 a = b+1; 183 b = strchr(a, ';'); 184 if (b == 0) { 185 // If there's no semicolon, this is the last item. 186 String8 v(a); 187 mMap.add(k, v); 188 break; 189 } 190 191 String8 v(a, (size_t)(b-a)); 192 mMap.add(k, v); 193 a = b+1; 194 } 195} 196 197 198void CameraParameters::set(const char *key, const char *value) 199{ 200 // XXX i think i can do this with strspn() 201 if (strchr(key, '=') || strchr(key, ';')) { 202 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 203 return; 204 } 205 206 if (strchr(value, '=') || strchr(key, ';')) { 207 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 208 return; 209 } 210 211 mMap.replaceValueFor(String8(key), String8(value)); 212} 213 214void CameraParameters::set(const char *key, int value) 215{ 216 char str[16]; 217 sprintf(str, "%d", value); 218 set(key, str); 219} 220 221void CameraParameters::setFloat(const char *key, float value) 222{ 223 char str[16]; // 14 should be enough. We overestimate to be safe. 224 snprintf(str, sizeof(str), "%g", value); 225 set(key, str); 226} 227 228const char *CameraParameters::get(const char *key) const 229{ 230 String8 v = mMap.valueFor(String8(key)); 231 if (v.length() == 0) 232 return 0; 233 return v.string(); 234} 235 236int CameraParameters::getInt(const char *key) const 237{ 238 const char *v = get(key); 239 if (v == 0) 240 return -1; 241 return strtol(v, 0, 0); 242} 243 244float CameraParameters::getFloat(const char *key) const 245{ 246 const char *v = get(key); 247 if (v == 0) return -1; 248 return strtof(v, 0); 249} 250 251static int parse_size(const char *str, int &width, int &height) 252{ 253 // Find the width. 254 char *end; 255 int w = (int)strtol(str, &end, 10); 256 // If an 'x' does not immediately follow, give up. 257 if (*end != 'x') 258 return -1; 259 260 // Find the height, immediately after the 'x'. 261 int h = (int)strtol(end+1, 0, 10); 262 263 width = w; 264 height = h; 265 266 return 0; 267} 268 269void CameraParameters::setPreviewSize(int width, int height) 270{ 271 char str[32]; 272 sprintf(str, "%dx%d", width, height); 273 set(KEY_PREVIEW_SIZE, str); 274} 275 276void CameraParameters::getPreviewSize(int *width, int *height) const 277{ 278 *width = -1; 279 *height = -1; 280 281 // Get the current string, if it doesn't exist, leave the -1x-1 282 const char *p = get(KEY_PREVIEW_SIZE); 283 if (p == 0) 284 return; 285 286 int w, h; 287 if (parse_size(p, w, h) == 0) { 288 *width = w; 289 *height = h; 290 } 291} 292 293void CameraParameters::setPreviewFrameRate(int fps) 294{ 295 set(KEY_PREVIEW_FRAME_RATE, fps); 296} 297 298int CameraParameters::getPreviewFrameRate() const 299{ 300 return getInt(KEY_PREVIEW_FRAME_RATE); 301} 302 303void CameraParameters::setPreviewFormat(const char *format) 304{ 305 set(KEY_PREVIEW_FORMAT, format); 306} 307 308const char *CameraParameters::getPreviewFormat() const 309{ 310 return get(KEY_PREVIEW_FORMAT); 311} 312 313void CameraParameters::setPictureSize(int width, int height) 314{ 315 char str[32]; 316 sprintf(str, "%dx%d", width, height); 317 set(KEY_PICTURE_SIZE, str); 318} 319 320void CameraParameters::getPictureSize(int *width, int *height) const 321{ 322 *width = -1; 323 *height = -1; 324 325 // Get the current string, if it doesn't exist, leave the -1x-1 326 const char *p = get(KEY_PICTURE_SIZE); 327 if (p == 0) 328 return; 329 330 int w, h; 331 if (parse_size(p, w, h) == 0) { 332 *width = w; 333 *height = h; 334 } 335} 336 337void CameraParameters::setPictureFormat(const char *format) 338{ 339 set(KEY_PICTURE_FORMAT, format); 340} 341 342const char *CameraParameters::getPictureFormat() const 343{ 344 return get(KEY_PICTURE_FORMAT); 345} 346 347void CameraParameters::dump() const 348{ 349 LOGD("dump: mMap.size = %d", mMap.size()); 350 for (size_t i = 0; i < mMap.size(); i++) { 351 String8 k, v; 352 k = mMap.keyAt(i); 353 v = mMap.valueAt(i); 354 LOGD("%s: %s\n", k.string(), v.string()); 355 } 356} 357 358status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 359{ 360 const size_t SIZE = 256; 361 char buffer[SIZE]; 362 String8 result; 363 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 364 result.append(buffer); 365 for (size_t i = 0; i < mMap.size(); i++) { 366 String8 k, v; 367 k = mMap.keyAt(i); 368 v = mMap.valueAt(i); 369 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 370 result.append(buffer); 371 } 372 write(fd, result.string(), result.size()); 373 return NO_ERROR; 374} 375 376}; // namespace android 377