• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 "CameraParams2"
19  // #define LOG_NDEBUG 0
20  #include <utils/Log.h>
21  
22  #include <string.h>
23  #include <stdlib.h>
24  #include <camera/CameraParameters2.h>
25  
26  namespace android {
27  
CameraParameters2()28  CameraParameters2::CameraParameters2()
29                  : mMap()
30  {
31  }
32  
~CameraParameters2()33  CameraParameters2::~CameraParameters2()
34  {
35  }
36  
flatten() const37  String8 CameraParameters2::flatten() const
38  {
39      String8 flattened("");
40      size_t size = mMap.size();
41  
42      for (size_t i = 0; i < size; i++) {
43          String8 k, v;
44          k = mMap.keyAt(i);
45          v = mMap.valueAt(i);
46  
47          flattened += k;
48          flattened += "=";
49          flattened += v;
50          if (i != size-1)
51              flattened += ";";
52      }
53  
54      ALOGV("%s: Flattened params = %s", __FUNCTION__, flattened.string());
55  
56      return flattened;
57  }
58  
unflatten(const String8 & params)59  void CameraParameters2::unflatten(const String8 &params)
60  {
61      const char *a = params.string();
62      const char *b;
63  
64      mMap.clear();
65  
66      for (;;) {
67          // Find the bounds of the key name.
68          b = strchr(a, '=');
69          if (b == 0)
70              break;
71  
72          // Create the key string.
73          String8 k(a, (size_t)(b-a));
74  
75          // Find the value.
76          a = b+1;
77          b = strchr(a, ';');
78          if (b == 0) {
79              // If there's no semicolon, this is the last item.
80              String8 v(a);
81              mMap.add(k, v);
82              break;
83          }
84  
85          String8 v(a, (size_t)(b-a));
86          mMap.add(k, v);
87          a = b+1;
88      }
89  }
90  
91  
set(const char * key,const char * value)92  void CameraParameters2::set(const char *key, const char *value)
93  {
94      // XXX i think i can do this with strspn()
95      if (strchr(key, '=') || strchr(key, ';')) {
96          //XXX ALOGE("Key \"%s\"contains invalid character (= or ;)", key);
97          return;
98      }
99  
100      if (strchr(value, '=') || strchr(value, ';')) {
101          //XXX ALOGE("Value \"%s\"contains invalid character (= or ;)", value);
102          return;
103      }
104  
105      // Replacing a value updates the key's order to be the new largest order
106      ssize_t res = mMap.replaceValueFor(String8(key), String8(value));
107      LOG_ALWAYS_FATAL_IF(res < 0, "replaceValueFor(%s,%s) failed", key, value);
108  }
109  
set(const char * key,int value)110  void CameraParameters2::set(const char *key, int value)
111  {
112      char str[16];
113      sprintf(str, "%d", value);
114      set(key, str);
115  }
116  
setFloat(const char * key,float value)117  void CameraParameters2::setFloat(const char *key, float value)
118  {
119      char str[16];  // 14 should be enough. We overestimate to be safe.
120      snprintf(str, sizeof(str), "%g", value);
121      set(key, str);
122  }
123  
get(const char * key) const124  const char *CameraParameters2::get(const char *key) const
125  {
126      ssize_t idx = mMap.indexOfKey(String8(key));
127      if (idx < 0) {
128          return NULL;
129      } else {
130          return mMap.valueAt(idx).string();
131      }
132  }
133  
getInt(const char * key) const134  int CameraParameters2::getInt(const char *key) const
135  {
136      const char *v = get(key);
137      if (v == 0)
138          return -1;
139      return strtol(v, 0, 0);
140  }
141  
getFloat(const char * key) const142  float CameraParameters2::getFloat(const char *key) const
143  {
144      const char *v = get(key);
145      if (v == 0) return -1;
146      return strtof(v, 0);
147  }
148  
compareSetOrder(const char * key1,const char * key2,int * order) const149  status_t CameraParameters2::compareSetOrder(const char *key1, const char *key2,
150          int *order) const {
151      if (key1 == NULL) {
152          ALOGE("%s: key1 must not be NULL", __FUNCTION__);
153          return BAD_VALUE;
154      } else if (key2 == NULL) {
155          ALOGE("%s: key2 must not be NULL", __FUNCTION__);
156          return BAD_VALUE;
157      } else if (order == NULL) {
158          ALOGE("%s: order must not be NULL", __FUNCTION__);
159          return BAD_VALUE;
160      }
161  
162      ssize_t index1 = mMap.indexOfKey(String8(key1));
163      ssize_t index2 = mMap.indexOfKey(String8(key2));
164      if (index1 < 0) {
165          ALOGW("%s: Key1 (%s) was not set", __FUNCTION__, key1);
166          return NAME_NOT_FOUND;
167      } else if (index2 < 0) {
168          ALOGW("%s: Key2 (%s) was not set", __FUNCTION__, key2);
169          return NAME_NOT_FOUND;
170      }
171  
172      *order = (index1 == index2) ? 0  :
173               (index1 < index2)  ? -1 :
174               1;
175  
176      return OK;
177  }
178  
remove(const char * key)179  void CameraParameters2::remove(const char *key)
180  {
181      mMap.removeItem(String8(key));
182  }
183  
184  // Parse string like "640x480" or "10000,20000"
parse_pair(const char * str,int * first,int * second,char delim,char ** endptr=NULL)185  static int parse_pair(const char *str, int *first, int *second, char delim,
186                        char **endptr = NULL)
187  {
188      // Find the first integer.
189      char *end;
190      int w = (int)strtol(str, &end, 10);
191      // If a delimeter does not immediately follow, give up.
192      if (*end != delim) {
193          ALOGE("Cannot find delimeter (%c) in str=%s", delim, str);
194          return -1;
195      }
196  
197      // Find the second integer, immediately after the delimeter.
198      int h = (int)strtol(end+1, &end, 10);
199  
200      *first = w;
201      *second = h;
202  
203      if (endptr) {
204          *endptr = end;
205      }
206  
207      return 0;
208  }
209  
parseSizesList(const char * sizesStr,Vector<Size> & sizes)210  static void parseSizesList(const char *sizesStr, Vector<Size> &sizes)
211  {
212      if (sizesStr == 0) {
213          return;
214      }
215  
216      char *sizeStartPtr = (char *)sizesStr;
217  
218      while (true) {
219          int width, height;
220          int success = parse_pair(sizeStartPtr, &width, &height, 'x',
221                                   &sizeStartPtr);
222          if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) {
223              ALOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr);
224              return;
225          }
226          sizes.push(Size(width, height));
227  
228          if (*sizeStartPtr == '\0') {
229              return;
230          }
231          sizeStartPtr++;
232      }
233  }
234  
setPreviewSize(int width,int height)235  void CameraParameters2::setPreviewSize(int width, int height)
236  {
237      char str[32];
238      sprintf(str, "%dx%d", width, height);
239      set(CameraParameters::KEY_PREVIEW_SIZE, str);
240  }
241  
getPreviewSize(int * width,int * height) const242  void CameraParameters2::getPreviewSize(int *width, int *height) const
243  {
244      *width = *height = -1;
245      // Get the current string, if it doesn't exist, leave the -1x-1
246      const char *p = get(CameraParameters::KEY_PREVIEW_SIZE);
247      if (p == 0)  return;
248      parse_pair(p, width, height, 'x');
249  }
250  
getPreferredPreviewSizeForVideo(int * width,int * height) const251  void CameraParameters2::getPreferredPreviewSizeForVideo(int *width, int *height) const
252  {
253      *width = *height = -1;
254      const char *p = get(CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO);
255      if (p == 0)  return;
256      parse_pair(p, width, height, 'x');
257  }
258  
getSupportedPreviewSizes(Vector<Size> & sizes) const259  void CameraParameters2::getSupportedPreviewSizes(Vector<Size> &sizes) const
260  {
261      const char *previewSizesStr = get(CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES);
262      parseSizesList(previewSizesStr, sizes);
263  }
264  
setVideoSize(int width,int height)265  void CameraParameters2::setVideoSize(int width, int height)
266  {
267      char str[32];
268      sprintf(str, "%dx%d", width, height);
269      set(CameraParameters::KEY_VIDEO_SIZE, str);
270  }
271  
getVideoSize(int * width,int * height) const272  void CameraParameters2::getVideoSize(int *width, int *height) const
273  {
274      *width = *height = -1;
275      const char *p = get(CameraParameters::KEY_VIDEO_SIZE);
276      if (p == 0) return;
277      parse_pair(p, width, height, 'x');
278  }
279  
getSupportedVideoSizes(Vector<Size> & sizes) const280  void CameraParameters2::getSupportedVideoSizes(Vector<Size> &sizes) const
281  {
282      const char *videoSizesStr = get(CameraParameters::KEY_SUPPORTED_VIDEO_SIZES);
283      parseSizesList(videoSizesStr, sizes);
284  }
285  
setPreviewFrameRate(int fps)286  void CameraParameters2::setPreviewFrameRate(int fps)
287  {
288      set(CameraParameters::KEY_PREVIEW_FRAME_RATE, fps);
289  }
290  
getPreviewFrameRate() const291  int CameraParameters2::getPreviewFrameRate() const
292  {
293      return getInt(CameraParameters::KEY_PREVIEW_FRAME_RATE);
294  }
295  
getPreviewFpsRange(int * min_fps,int * max_fps) const296  void CameraParameters2::getPreviewFpsRange(int *min_fps, int *max_fps) const
297  {
298      *min_fps = *max_fps = -1;
299      const char *p = get(CameraParameters::KEY_PREVIEW_FPS_RANGE);
300      if (p == 0) return;
301      parse_pair(p, min_fps, max_fps, ',');
302  }
303  
setPreviewFpsRange(int min_fps,int max_fps)304  void CameraParameters2::setPreviewFpsRange(int min_fps, int max_fps)
305  {
306      String8 str = String8::format("%d,%d", min_fps, max_fps);
307      set(CameraParameters::KEY_PREVIEW_FPS_RANGE, str.string());
308  }
309  
setPreviewFormat(const char * format)310  void CameraParameters2::setPreviewFormat(const char *format)
311  {
312      set(CameraParameters::KEY_PREVIEW_FORMAT, format);
313  }
314  
getPreviewFormat() const315  const char *CameraParameters2::getPreviewFormat() const
316  {
317      return get(CameraParameters::KEY_PREVIEW_FORMAT);
318  }
319  
setPictureSize(int width,int height)320  void CameraParameters2::setPictureSize(int width, int height)
321  {
322      char str[32];
323      sprintf(str, "%dx%d", width, height);
324      set(CameraParameters::KEY_PICTURE_SIZE, str);
325  }
326  
getPictureSize(int * width,int * height) const327  void CameraParameters2::getPictureSize(int *width, int *height) const
328  {
329      *width = *height = -1;
330      // Get the current string, if it doesn't exist, leave the -1x-1
331      const char *p = get(CameraParameters::KEY_PICTURE_SIZE);
332      if (p == 0) return;
333      parse_pair(p, width, height, 'x');
334  }
335  
getSupportedPictureSizes(Vector<Size> & sizes) const336  void CameraParameters2::getSupportedPictureSizes(Vector<Size> &sizes) const
337  {
338      const char *pictureSizesStr = get(CameraParameters::KEY_SUPPORTED_PICTURE_SIZES);
339      parseSizesList(pictureSizesStr, sizes);
340  }
341  
setPictureFormat(const char * format)342  void CameraParameters2::setPictureFormat(const char *format)
343  {
344      set(CameraParameters::KEY_PICTURE_FORMAT, format);
345  }
346  
getPictureFormat() const347  const char *CameraParameters2::getPictureFormat() const
348  {
349      return get(CameraParameters::KEY_PICTURE_FORMAT);
350  }
351  
dump() const352  void CameraParameters2::dump() const
353  {
354      ALOGD("dump: mMap.size = %d", mMap.size());
355      for (size_t i = 0; i < mMap.size(); i++) {
356          String8 k, v;
357          k = mMap.keyAt(i);
358          v = mMap.valueAt(i);
359          ALOGD("%s: %s\n", k.string(), v.string());
360      }
361  }
362  
dump(int fd,const Vector<String16> & args) const363  status_t CameraParameters2::dump(int fd, const Vector<String16>& args) const
364  {
365      (void)args;
366      const size_t SIZE = 256;
367      char buffer[SIZE];
368      String8 result;
369      snprintf(buffer, 255, "CameraParameters2::dump: mMap.size = %zu\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