CameraParameters.cpp revision c0170bc6c6c81f5dfa86a132bf29ee48c01329d9
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 73// Values for white balance settings. 74const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 75const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 76const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 77const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 78const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 79const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 80const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 81const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 82 83// Values for effect settings. 84const char CameraParameters::EFFECT_NONE[] = "none"; 85const char CameraParameters::EFFECT_MONO[] = "mono"; 86const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 87const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 88const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 89const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 90const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 91const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 92const char CameraParameters::EFFECT_AQUA[] = "aqua"; 93 94// Values for antibanding settings. 95const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 96const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 97const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 98const char CameraParameters::ANTIBANDING_OFF[] = "off"; 99 100// Values for flash mode settings. 101const char CameraParameters::FLASH_MODE_OFF[] = "off"; 102const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 103const char CameraParameters::FLASH_MODE_ON[] = "on"; 104const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 105const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 106 107// Values for scene mode settings. 108const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 109const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 110const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 111const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 112const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 113const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 114const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 115const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 116const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 117const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 118const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 119const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 120const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 121const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 122const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 123 124// Formats for setPreviewFormat and setPictureFormat. 125const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 126const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 127const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 128const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 129const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 130 131// Values for focus mode settings. 132const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 133const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 134const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 135const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 136 137CameraParameters::CameraParameters() 138 : mMap() 139{ 140} 141 142CameraParameters::~CameraParameters() 143{ 144} 145 146String8 CameraParameters::flatten() const 147{ 148 String8 flattened(""); 149 size_t size = mMap.size(); 150 151 for (size_t i = 0; i < size; i++) { 152 String8 k, v; 153 k = mMap.keyAt(i); 154 v = mMap.valueAt(i); 155 156 flattened += k; 157 flattened += "="; 158 flattened += v; 159 if (i != size-1) 160 flattened += ";"; 161 } 162 163 return flattened; 164} 165 166void CameraParameters::unflatten(const String8 ¶ms) 167{ 168 const char *a = params.string(); 169 const char *b; 170 171 mMap.clear(); 172 173 for (;;) { 174 // Find the bounds of the key name. 175 b = strchr(a, '='); 176 if (b == 0) 177 break; 178 179 // Create the key string. 180 String8 k(a, (size_t)(b-a)); 181 182 // Find the value. 183 a = b+1; 184 b = strchr(a, ';'); 185 if (b == 0) { 186 // If there's no semicolon, this is the last item. 187 String8 v(a); 188 mMap.add(k, v); 189 break; 190 } 191 192 String8 v(a, (size_t)(b-a)); 193 mMap.add(k, v); 194 a = b+1; 195 } 196} 197 198 199void CameraParameters::set(const char *key, const char *value) 200{ 201 // XXX i think i can do this with strspn() 202 if (strchr(key, '=') || strchr(key, ';')) { 203 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 204 return; 205 } 206 207 if (strchr(value, '=') || strchr(key, ';')) { 208 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 209 return; 210 } 211 212 mMap.replaceValueFor(String8(key), String8(value)); 213} 214 215void CameraParameters::set(const char *key, int value) 216{ 217 char str[16]; 218 sprintf(str, "%d", value); 219 set(key, str); 220} 221 222void CameraParameters::setFloat(const char *key, float value) 223{ 224 char str[16]; // 14 should be enough. We overestimate to be safe. 225 snprintf(str, sizeof(str), "%g", value); 226 set(key, str); 227} 228 229const char *CameraParameters::get(const char *key) const 230{ 231 String8 v = mMap.valueFor(String8(key)); 232 if (v.length() == 0) 233 return 0; 234 return v.string(); 235} 236 237int CameraParameters::getInt(const char *key) const 238{ 239 const char *v = get(key); 240 if (v == 0) 241 return -1; 242 return strtol(v, 0, 0); 243} 244 245float CameraParameters::getFloat(const char *key) const 246{ 247 const char *v = get(key); 248 if (v == 0) return -1; 249 return strtof(v, 0); 250} 251 252static int parse_size(const char *str, int &width, int &height) 253{ 254 // Find the width. 255 char *end; 256 int w = (int)strtol(str, &end, 10); 257 // If an 'x' does not immediately follow, give up. 258 if (*end != 'x') 259 return -1; 260 261 // Find the height, immediately after the 'x'. 262 int h = (int)strtol(end+1, 0, 10); 263 264 width = w; 265 height = h; 266 267 return 0; 268} 269 270void CameraParameters::setPreviewSize(int width, int height) 271{ 272 char str[32]; 273 sprintf(str, "%dx%d", width, height); 274 set(KEY_PREVIEW_SIZE, str); 275} 276 277void CameraParameters::getPreviewSize(int *width, int *height) const 278{ 279 *width = -1; 280 *height = -1; 281 282 // Get the current string, if it doesn't exist, leave the -1x-1 283 const char *p = get(KEY_PREVIEW_SIZE); 284 if (p == 0) 285 return; 286 287 int w, h; 288 if (parse_size(p, w, h) == 0) { 289 *width = w; 290 *height = h; 291 } 292} 293 294void CameraParameters::setPreviewFrameRate(int fps) 295{ 296 set(KEY_PREVIEW_FRAME_RATE, fps); 297} 298 299int CameraParameters::getPreviewFrameRate() const 300{ 301 return getInt(KEY_PREVIEW_FRAME_RATE); 302} 303 304void CameraParameters::setPreviewFormat(const char *format) 305{ 306 set(KEY_PREVIEW_FORMAT, format); 307} 308 309const char *CameraParameters::getPreviewFormat() const 310{ 311 return get(KEY_PREVIEW_FORMAT); 312} 313 314void CameraParameters::setPictureSize(int width, int height) 315{ 316 char str[32]; 317 sprintf(str, "%dx%d", width, height); 318 set(KEY_PICTURE_SIZE, str); 319} 320 321void CameraParameters::getPictureSize(int *width, int *height) const 322{ 323 *width = -1; 324 *height = -1; 325 326 // Get the current string, if it doesn't exist, leave the -1x-1 327 const char *p = get(KEY_PICTURE_SIZE); 328 if (p == 0) 329 return; 330 331 int w, h; 332 if (parse_size(p, w, h) == 0) { 333 *width = w; 334 *height = h; 335 } 336} 337 338void CameraParameters::setPictureFormat(const char *format) 339{ 340 set(KEY_PICTURE_FORMAT, format); 341} 342 343const char *CameraParameters::getPictureFormat() const 344{ 345 return get(KEY_PICTURE_FORMAT); 346} 347 348void CameraParameters::dump() const 349{ 350 LOGD("dump: mMap.size = %d", mMap.size()); 351 for (size_t i = 0; i < mMap.size(); i++) { 352 String8 k, v; 353 k = mMap.keyAt(i); 354 v = mMap.valueAt(i); 355 LOGD("%s: %s\n", k.string(), v.string()); 356 } 357} 358 359status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 360{ 361 const size_t SIZE = 256; 362 char buffer[SIZE]; 363 String8 result; 364 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 365 result.append(buffer); 366 for (size_t i = 0; i < mMap.size(); i++) { 367 String8 k, v; 368 k = mMap.keyAt(i); 369 v = mMap.valueAt(i); 370 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 371 result.append(buffer); 372 } 373 write(fd, result.string(), result.size()); 374 return NO_ERROR; 375} 376 377}; // namespace android 378