The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | #define LOG_TAG "BitmapFactory" |
| 2 | |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 3 | #include "BitmapFactory.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 4 | #include "SkImageDecoder.h" |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 5 | #include "SkImageRef_ashmem.h" |
| 6 | #include "SkImageRef_GlobalPool.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 7 | #include "SkPixelRef.h" |
| 8 | #include "SkStream.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 9 | #include "SkTemplates.h" |
| 10 | #include "SkUtils.h" |
| 11 | #include "CreateJavaOutputStreamAdaptor.h" |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 12 | #include "AutoDecodeCancel.h" |
Wei-Ta Chen | 6b849e2 | 2010-09-07 17:32:18 +0800 | [diff] [blame] | 13 | #include "Utils.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 14 | |
| 15 | #include <android_runtime/AndroidRuntime.h> |
| 16 | #include <utils/Asset.h> |
| 17 | #include <utils/ResourceTypes.h> |
| 18 | #include <netinet/in.h> |
| 19 | #include <sys/mman.h> |
Joseph Wen | 2dcfbef | 2010-09-10 10:15:09 +0800 | [diff] [blame] | 20 | #include <sys/stat.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 21 | |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 22 | jclass gOptions_class; |
| 23 | jfieldID gOptions_justBoundsFieldID; |
| 24 | jfieldID gOptions_sampleSizeFieldID; |
| 25 | jfieldID gOptions_configFieldID; |
| 26 | jfieldID gOptions_ditherFieldID; |
| 27 | jfieldID gOptions_purgeableFieldID; |
| 28 | jfieldID gOptions_shareableFieldID; |
| 29 | jfieldID gOptions_nativeAllocFieldID; |
| 30 | jfieldID gOptions_widthFieldID; |
| 31 | jfieldID gOptions_heightFieldID; |
| 32 | jfieldID gOptions_mimeFieldID; |
| 33 | jfieldID gOptions_mCancelID; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 34 | |
| 35 | static jclass gFileDescriptor_class; |
| 36 | static jfieldID gFileDescriptor_descriptor; |
| 37 | |
| 38 | #if 0 |
| 39 | #define TRACE_BITMAP(code) code |
| 40 | #else |
| 41 | #define TRACE_BITMAP(code) |
| 42 | #endif |
| 43 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 44 | using namespace android; |
| 45 | |
| 46 | class NinePatchPeeker : public SkImageDecoder::Peeker { |
Mike Reed | 39f10ec | 2010-03-24 10:08:50 -0400 | [diff] [blame] | 47 | SkImageDecoder* fHost; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 48 | public: |
Mike Reed | 39f10ec | 2010-03-24 10:08:50 -0400 | [diff] [blame] | 49 | NinePatchPeeker(SkImageDecoder* host) { |
| 50 | // the host lives longer than we do, so a raw ptr is safe |
| 51 | fHost = host; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 52 | fPatchIsValid = false; |
| 53 | } |
| 54 | |
| 55 | ~NinePatchPeeker() { |
| 56 | if (fPatchIsValid) { |
| 57 | free(fPatch); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | bool fPatchIsValid; |
| 62 | Res_png_9patch* fPatch; |
| 63 | |
| 64 | virtual bool peek(const char tag[], const void* data, size_t length) { |
| 65 | if (strcmp("npTc", tag) == 0 && length >= sizeof(Res_png_9patch)) { |
| 66 | Res_png_9patch* patch = (Res_png_9patch*) data; |
| 67 | size_t patchSize = patch->serializedSize(); |
| 68 | assert(length == patchSize); |
| 69 | // You have to copy the data because it is owned by the png reader |
| 70 | Res_png_9patch* patchNew = (Res_png_9patch*) malloc(patchSize); |
| 71 | memcpy(patchNew, patch, patchSize); |
| 72 | // this relies on deserialization being done in place |
| 73 | Res_png_9patch::deserialize(patchNew); |
| 74 | patchNew->fileToDevice(); |
| 75 | if (fPatchIsValid) { |
| 76 | free(fPatch); |
| 77 | } |
| 78 | fPatch = patchNew; |
| 79 | //printf("9patch: (%d,%d)-(%d,%d)\n", |
| 80 | // fPatch.sizeLeft, fPatch.sizeTop, |
| 81 | // fPatch.sizeRight, fPatch.sizeBottom); |
| 82 | fPatchIsValid = true; |
Mike Reed | 39f10ec | 2010-03-24 10:08:50 -0400 | [diff] [blame] | 83 | |
| 84 | // now update our host to force index or 32bit config |
| 85 | // 'cause we don't want 565 predithered, since as a 9patch, we know |
| 86 | // we will be stretched, and therefore we want to dither afterwards. |
| 87 | static const SkBitmap::Config gNo565Pref[] = { |
| 88 | SkBitmap::kIndex8_Config, |
| 89 | SkBitmap::kIndex8_Config, |
| 90 | SkBitmap::kARGB_8888_Config, |
| 91 | SkBitmap::kARGB_8888_Config, |
| 92 | SkBitmap::kARGB_8888_Config, |
| 93 | SkBitmap::kARGB_8888_Config, |
| 94 | }; |
| 95 | fHost->setPrefConfigTable(gNo565Pref); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 96 | } else { |
| 97 | fPatch = NULL; |
| 98 | } |
| 99 | return true; // keep on decoding |
| 100 | } |
| 101 | }; |
| 102 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 103 | /////////////////////////////////////////////////////////////////////////////// |
| 104 | |
| 105 | static inline int32_t validOrNeg1(bool isValid, int32_t value) { |
| 106 | // return isValid ? value : -1; |
| 107 | SkASSERT((int)isValid == 0 || (int)isValid == 1); |
| 108 | return ((int32_t)isValid - 1) | value; |
| 109 | } |
| 110 | |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 111 | jstring getMimeTypeString(JNIEnv* env, SkImageDecoder::Format format) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 112 | static const struct { |
| 113 | SkImageDecoder::Format fFormat; |
| 114 | const char* fMimeType; |
| 115 | } gMimeTypes[] = { |
| 116 | { SkImageDecoder::kBMP_Format, "image/bmp" }, |
| 117 | { SkImageDecoder::kGIF_Format, "image/gif" }, |
| 118 | { SkImageDecoder::kICO_Format, "image/x-ico" }, |
| 119 | { SkImageDecoder::kJPEG_Format, "image/jpeg" }, |
| 120 | { SkImageDecoder::kPNG_Format, "image/png" }, |
| 121 | { SkImageDecoder::kWBMP_Format, "image/vnd.wap.wbmp" } |
| 122 | }; |
| 123 | |
| 124 | const char* cstr = NULL; |
| 125 | for (size_t i = 0; i < SK_ARRAY_COUNT(gMimeTypes); i++) { |
| 126 | if (gMimeTypes[i].fFormat == format) { |
| 127 | cstr = gMimeTypes[i].fMimeType; |
| 128 | break; |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | jstring jstr = 0; |
| 133 | if (NULL != cstr) { |
| 134 | jstr = env->NewStringUTF(cstr); |
| 135 | } |
| 136 | return jstr; |
| 137 | } |
| 138 | |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 139 | static bool optionsPurgeable(JNIEnv* env, jobject options) { |
| 140 | return options != NULL && |
| 141 | env->GetBooleanField(options, gOptions_purgeableFieldID); |
| 142 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 143 | |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 144 | static bool optionsShareable(JNIEnv* env, jobject options) { |
| 145 | return options != NULL && |
| 146 | env->GetBooleanField(options, gOptions_shareableFieldID); |
| 147 | } |
| 148 | |
Mike Reed | 1b22b97 | 2009-07-17 11:21:47 -0400 | [diff] [blame] | 149 | static bool optionsReportSizeToVM(JNIEnv* env, jobject options) { |
| 150 | return NULL == options || |
| 151 | !env->GetBooleanField(options, gOptions_nativeAllocFieldID); |
| 152 | } |
| 153 | |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 154 | |
| 155 | static SkPixelRef* installPixelRef(SkBitmap* bitmap, SkStream* stream, |
Mike Reed | 1715441 | 2009-09-24 12:35:27 -0400 | [diff] [blame] | 156 | int sampleSize, bool ditherImage) { |
| 157 | SkImageRef* pr; |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 158 | // only use ashmem for large images, since mmaps come at a price |
Wei-Ta Chen | 2a2c5cd | 2009-06-03 14:08:04 -0700 | [diff] [blame] | 159 | if (bitmap->getSize() >= 32 * 1024) { |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 160 | pr = new SkImageRef_ashmem(stream, bitmap->config(), sampleSize); |
| 161 | } else { |
| 162 | pr = new SkImageRef_GlobalPool(stream, bitmap->config(), sampleSize); |
| 163 | } |
Mike Reed | 1715441 | 2009-09-24 12:35:27 -0400 | [diff] [blame] | 164 | pr->setDitherImage(ditherImage); |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 165 | bitmap->setPixelRef(pr)->unref(); |
Romain Guy | 288471d | 2010-08-19 14:41:16 -0700 | [diff] [blame] | 166 | pr->isOpaque(bitmap); |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 167 | return pr; |
| 168 | } |
| 169 | |
| 170 | // since we "may" create a purgeable imageref, we require the stream be ref'able |
| 171 | // i.e. dynamically allocated, since its lifetime may exceed the current stack |
| 172 | // frame. |
| 173 | static jobject doDecode(JNIEnv* env, SkStream* stream, jobject padding, |
Mike Reed | 36ad54a | 2010-03-10 10:28:10 -0500 | [diff] [blame] | 174 | jobject options, bool allowPurgeable, |
| 175 | bool forcePurgeable = false) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 176 | int sampleSize = 1; |
| 177 | SkImageDecoder::Mode mode = SkImageDecoder::kDecodePixels_Mode; |
| 178 | SkBitmap::Config prefConfig = SkBitmap::kNo_Config; |
| 179 | bool doDither = true; |
Mike Reed | 36ad54a | 2010-03-10 10:28:10 -0500 | [diff] [blame] | 180 | bool isPurgeable = forcePurgeable || |
| 181 | (allowPurgeable && optionsPurgeable(env, options)); |
Mike Reed | 1b22b97 | 2009-07-17 11:21:47 -0400 | [diff] [blame] | 182 | bool reportSizeToVM = optionsReportSizeToVM(env, options); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 183 | |
| 184 | if (NULL != options) { |
| 185 | sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID); |
| 186 | if (env->GetBooleanField(options, gOptions_justBoundsFieldID)) { |
| 187 | mode = SkImageDecoder::kDecodeBounds_Mode; |
| 188 | } |
| 189 | // initialize these, in case we fail later on |
| 190 | env->SetIntField(options, gOptions_widthFieldID, -1); |
| 191 | env->SetIntField(options, gOptions_heightFieldID, -1); |
| 192 | env->SetObjectField(options, gOptions_mimeFieldID, 0); |
| 193 | |
| 194 | jobject jconfig = env->GetObjectField(options, gOptions_configFieldID); |
| 195 | prefConfig = GraphicsJNI::getNativeBitmapConfig(env, jconfig); |
| 196 | doDither = env->GetBooleanField(options, gOptions_ditherFieldID); |
| 197 | } |
| 198 | |
| 199 | SkImageDecoder* decoder = SkImageDecoder::Factory(stream); |
| 200 | if (NULL == decoder) { |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 201 | return nullObjectReturn("SkImageDecoder::Factory returned null"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | decoder->setSampleSize(sampleSize); |
| 205 | decoder->setDitherImage(doDither); |
| 206 | |
Mike Reed | 39f10ec | 2010-03-24 10:08:50 -0400 | [diff] [blame] | 207 | NinePatchPeeker peeker(decoder); |
Mike Reed | 1b22b97 | 2009-07-17 11:21:47 -0400 | [diff] [blame] | 208 | JavaPixelAllocator javaAllocator(env, reportSizeToVM); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 209 | SkBitmap* bitmap = new SkBitmap; |
| 210 | Res_png_9patch dummy9Patch; |
| 211 | |
| 212 | SkAutoTDelete<SkImageDecoder> add(decoder); |
| 213 | SkAutoTDelete<SkBitmap> adb(bitmap); |
| 214 | |
| 215 | decoder->setPeeker(&peeker); |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 216 | if (!isPurgeable) { |
| 217 | decoder->setAllocator(&javaAllocator); |
| 218 | } |
| 219 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 220 | AutoDecoderCancel adc(options, decoder); |
| 221 | |
Ray Chen | 0a6a0e9 | 2009-04-02 01:31:49 -0700 | [diff] [blame] | 222 | // To fix the race condition in case "requestCancelDecode" |
| 223 | // happens earlier than AutoDecoderCancel object is added |
| 224 | // to the gAutoDecoderCancelMutex linked list. |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 225 | if (NULL != options && env->GetBooleanField(options, gOptions_mCancelID)) { |
| 226 | return nullObjectReturn("gOptions_mCancelID");; |
Ray Chen | 0a6a0e9 | 2009-04-02 01:31:49 -0700 | [diff] [blame] | 227 | } |
| 228 | |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 229 | SkImageDecoder::Mode decodeMode = mode; |
| 230 | if (isPurgeable) { |
| 231 | decodeMode = SkImageDecoder::kDecodeBounds_Mode; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 232 | } |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 233 | if (!decoder->decode(stream, bitmap, prefConfig, decodeMode)) { |
| 234 | return nullObjectReturn("decoder->decode returned false"); |
| 235 | } |
| 236 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 237 | // update options (if any) |
| 238 | if (NULL != options) { |
| 239 | env->SetIntField(options, gOptions_widthFieldID, bitmap->width()); |
| 240 | env->SetIntField(options, gOptions_heightFieldID, bitmap->height()); |
| 241 | // TODO: set the mimeType field with the data from the codec. |
| 242 | // but how to reuse a set of strings, rather than allocating new one |
| 243 | // each time? |
| 244 | env->SetObjectField(options, gOptions_mimeFieldID, |
| 245 | getMimeTypeString(env, decoder->getFormat())); |
| 246 | } |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 247 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 248 | // if we're in justBounds mode, return now (skip the java bitmap) |
| 249 | if (SkImageDecoder::kDecodeBounds_Mode == mode) { |
| 250 | return NULL; |
| 251 | } |
| 252 | |
| 253 | jbyteArray ninePatchChunk = NULL; |
| 254 | if (peeker.fPatchIsValid) { |
| 255 | size_t ninePatchArraySize = peeker.fPatch->serializedSize(); |
| 256 | ninePatchChunk = env->NewByteArray(ninePatchArraySize); |
| 257 | if (NULL == ninePatchChunk) { |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 258 | return nullObjectReturn("ninePatchChunk == null"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 259 | } |
| 260 | jbyte* array = (jbyte*)env->GetPrimitiveArrayCritical(ninePatchChunk, |
| 261 | NULL); |
| 262 | if (NULL == array) { |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 263 | return nullObjectReturn("primitive array == null"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 264 | } |
| 265 | peeker.fPatch->serialize(array); |
| 266 | env->ReleasePrimitiveArrayCritical(ninePatchChunk, array, 0); |
| 267 | } |
| 268 | |
| 269 | // detach bitmap from its autotdeleter, since we want to own it now |
| 270 | adb.detach(); |
| 271 | |
| 272 | if (padding) { |
| 273 | if (peeker.fPatchIsValid) { |
| 274 | GraphicsJNI::set_jrect(env, padding, |
| 275 | peeker.fPatch->paddingLeft, |
| 276 | peeker.fPatch->paddingTop, |
| 277 | peeker.fPatch->paddingRight, |
| 278 | peeker.fPatch->paddingBottom); |
| 279 | } else { |
| 280 | GraphicsJNI::set_jrect(env, padding, -1, -1, -1, -1); |
| 281 | } |
| 282 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 283 | |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 284 | SkPixelRef* pr; |
| 285 | if (isPurgeable) { |
Mike Reed | 1715441 | 2009-09-24 12:35:27 -0400 | [diff] [blame] | 286 | pr = installPixelRef(bitmap, stream, sampleSize, doDither); |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 287 | } else { |
| 288 | // if we get here, we're in kDecodePixels_Mode and will therefore |
| 289 | // already have a pixelref installed. |
| 290 | pr = bitmap->pixelRef(); |
| 291 | } |
| 292 | // promise we will never change our pixels (great for sharing and pictures) |
| 293 | pr->setImmutable(); |
| 294 | // now create the java bitmap |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 295 | return GraphicsJNI::createBitmap(env, bitmap, false, ninePatchChunk); |
| 296 | } |
| 297 | |
| 298 | static jobject nativeDecodeStream(JNIEnv* env, jobject clazz, |
| 299 | jobject is, // InputStream |
| 300 | jbyteArray storage, // byte[] |
| 301 | jobject padding, |
| 302 | jobject options) { // BitmapFactory$Options |
| 303 | jobject bitmap = NULL; |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 304 | SkStream* stream = CreateJavaInputStreamAdaptor(env, is, storage, 0); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 305 | |
| 306 | if (stream) { |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 307 | // for now we don't allow purgeable with java inputstreams |
| 308 | bitmap = doDecode(env, stream, padding, options, false); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 309 | stream->unref(); |
| 310 | } |
| 311 | return bitmap; |
| 312 | } |
| 313 | |
| 314 | static ssize_t getFDSize(int fd) { |
| 315 | off_t curr = ::lseek(fd, 0, SEEK_CUR); |
| 316 | if (curr < 0) { |
| 317 | return 0; |
| 318 | } |
| 319 | size_t size = ::lseek(fd, 0, SEEK_END); |
| 320 | ::lseek(fd, curr, SEEK_SET); |
| 321 | return size; |
| 322 | } |
| 323 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 324 | static jobject nativeDecodeFileDescriptor(JNIEnv* env, jobject clazz, |
| 325 | jobject fileDescriptor, |
| 326 | jobject padding, |
| 327 | jobject bitmapFactoryOptions) { |
| 328 | NPE_CHECK_RETURN_ZERO(env, fileDescriptor); |
| 329 | |
| 330 | jint descriptor = env->GetIntField(fileDescriptor, |
| 331 | gFileDescriptor_descriptor); |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 332 | |
| 333 | bool isPurgeable = optionsPurgeable(env, bitmapFactoryOptions); |
| 334 | bool isShareable = optionsShareable(env, bitmapFactoryOptions); |
| 335 | bool weOwnTheFD = false; |
| 336 | if (isPurgeable && isShareable) { |
| 337 | int newFD = ::dup(descriptor); |
| 338 | if (-1 != newFD) { |
| 339 | weOwnTheFD = true; |
| 340 | descriptor = newFD; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 341 | } |
| 342 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 343 | |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 344 | SkFDStream* stream = new SkFDStream(descriptor, weOwnTheFD); |
| 345 | SkAutoUnref aur(stream); |
| 346 | if (!stream->isValid()) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 347 | return NULL; |
| 348 | } |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 349 | |
| 350 | /* Restore our offset when we leave, so we can be called more than once |
| 351 | with the same descriptor. This is only required if we didn't dup the |
| 352 | file descriptor, but it is OK to do it all the time. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 353 | */ |
| 354 | AutoFDSeek as(descriptor); |
| 355 | |
Wei-Ta Chen | 2a2c5cd | 2009-06-03 14:08:04 -0700 | [diff] [blame] | 356 | /* Allow purgeable iff we own the FD, i.e., in the puregeable and |
| 357 | shareable case. |
| 358 | */ |
| 359 | return doDecode(env, stream, padding, bitmapFactoryOptions, weOwnTheFD); |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | /* make a deep copy of the asset, and return it as a stream, or NULL if there |
| 363 | was an error. |
| 364 | */ |
| 365 | static SkStream* copyAssetToStream(Asset* asset) { |
| 366 | // if we could "ref/reopen" the asset, we may not need to copy it here |
| 367 | off_t size = asset->seek(0, SEEK_SET); |
| 368 | if ((off_t)-1 == size) { |
| 369 | SkDebugf("---- copyAsset: asset rewind failed\n"); |
| 370 | return NULL; |
| 371 | } |
| 372 | |
| 373 | size = asset->getLength(); |
| 374 | if (size <= 0) { |
| 375 | SkDebugf("---- copyAsset: asset->getLength() returned %d\n", size); |
| 376 | return NULL; |
| 377 | } |
| 378 | |
| 379 | SkStream* stream = new SkMemoryStream(size); |
| 380 | void* data = const_cast<void*>(stream->getMemoryBase()); |
| 381 | off_t len = asset->read(data, size); |
| 382 | if (len != size) { |
| 383 | SkDebugf("---- copyAsset: asset->read(%d) returned %d\n", size, len); |
| 384 | delete stream; |
| 385 | stream = NULL; |
| 386 | } |
| 387 | return stream; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | static jobject nativeDecodeAsset(JNIEnv* env, jobject clazz, |
| 391 | jint native_asset, // Asset |
| 392 | jobject padding, // Rect |
| 393 | jobject options) { // BitmapFactory$Options |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 394 | SkStream* stream; |
| 395 | Asset* asset = reinterpret_cast<Asset*>(native_asset); |
Romain Guy | 18ef3725 | 2010-08-19 15:10:54 -0700 | [diff] [blame] | 396 | bool forcePurgeable = optionsPurgeable(env, options); |
| 397 | if (forcePurgeable) { |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 398 | // if we could "ref/reopen" the asset, we may not need to copy it here |
| 399 | // and we could assume optionsShareable, since assets are always RO |
| 400 | stream = copyAssetToStream(asset); |
| 401 | if (NULL == stream) { |
| 402 | return NULL; |
| 403 | } |
| 404 | } else { |
| 405 | // since we know we'll be done with the asset when we return, we can |
| 406 | // just use a simple wrapper |
| 407 | stream = new AssetStreamAdaptor(asset); |
| 408 | } |
| 409 | SkAutoUnref aur(stream); |
Mike Reed | 36ad54a | 2010-03-10 10:28:10 -0500 | [diff] [blame] | 410 | return doDecode(env, stream, padding, options, true, forcePurgeable); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 411 | } |
| 412 | |
| 413 | static jobject nativeDecodeByteArray(JNIEnv* env, jobject, jbyteArray byteArray, |
| 414 | int offset, int length, jobject options) { |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 415 | /* If optionsShareable() we could decide to just wrap the java array and |
| 416 | share it, but that means adding a globalref to the java array object |
| 417 | and managing its lifetime. For now we just always copy the array's data |
| 418 | if optionsPurgeable(). |
| 419 | */ |
| 420 | AutoJavaByteArray ar(env, byteArray); |
| 421 | SkStream* stream = new SkMemoryStream(ar.ptr() + offset, length, |
| 422 | optionsPurgeable(env, options)); |
| 423 | SkAutoUnref aur(stream); |
| 424 | return doDecode(env, stream, NULL, options, true); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 425 | } |
| 426 | |
| 427 | static void nativeRequestCancel(JNIEnv*, jobject joptions) { |
| 428 | (void)AutoDecoderCancel::RequestCancel(joptions); |
| 429 | } |
| 430 | |
| 431 | static jbyteArray nativeScaleNinePatch(JNIEnv* env, jobject, jbyteArray chunkObject, jfloat scale, |
| 432 | jobject padding) { |
| 433 | |
| 434 | jbyte* array = env->GetByteArrayElements(chunkObject, 0); |
| 435 | if (array != NULL) { |
| 436 | size_t chunkSize = env->GetArrayLength(chunkObject); |
| 437 | void* storage = alloca(chunkSize); |
| 438 | android::Res_png_9patch* chunk = static_cast<android::Res_png_9patch*>(storage); |
| 439 | memcpy(chunk, array, chunkSize); |
| 440 | android::Res_png_9patch::deserialize(chunk); |
| 441 | |
| 442 | chunk->paddingLeft = int(chunk->paddingLeft * scale + 0.5f); |
| 443 | chunk->paddingTop = int(chunk->paddingTop * scale + 0.5f); |
| 444 | chunk->paddingRight = int(chunk->paddingRight * scale + 0.5f); |
| 445 | chunk->paddingBottom = int(chunk->paddingBottom * scale + 0.5f); |
| 446 | |
| 447 | for (int i = 0; i < chunk->numXDivs; i++) { |
| 448 | chunk->xDivs[i] = int(chunk->xDivs[i] * scale + 0.5f); |
| 449 | if (i > 0 && chunk->xDivs[i] == chunk->xDivs[i - 1]) { |
| 450 | chunk->xDivs[i]++; |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | for (int i = 0; i < chunk->numYDivs; i++) { |
| 455 | chunk->yDivs[i] = int(chunk->yDivs[i] * scale + 0.5f); |
| 456 | if (i > 0 && chunk->yDivs[i] == chunk->yDivs[i - 1]) { |
| 457 | chunk->yDivs[i]++; |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | memcpy(array, chunk, chunkSize); |
| 462 | |
| 463 | if (padding) { |
| 464 | GraphicsJNI::set_jrect(env, padding, chunk->paddingLeft, chunk->paddingTop, |
| 465 | chunk->paddingRight, chunk->paddingBottom); |
| 466 | } |
| 467 | |
| 468 | env->ReleaseByteArrayElements(chunkObject, array, 0); |
| 469 | } |
| 470 | return chunkObject; |
| 471 | } |
| 472 | |
Mike Reed | ab4a0c1 | 2010-01-26 10:13:53 -0500 | [diff] [blame] | 473 | static void nativeSetDefaultConfig(JNIEnv* env, jobject, int nativeConfig) { |
| 474 | SkBitmap::Config config = static_cast<SkBitmap::Config>(nativeConfig); |
| 475 | |
| 476 | // these are the only default configs that make sense for codecs right now |
| 477 | static const SkBitmap::Config gValidDefConfig[] = { |
| 478 | SkBitmap::kRGB_565_Config, |
| 479 | SkBitmap::kARGB_8888_Config, |
| 480 | }; |
| 481 | |
| 482 | for (size_t i = 0; i < SK_ARRAY_COUNT(gValidDefConfig); i++) { |
| 483 | if (config == gValidDefConfig[i]) { |
| 484 | SkImageDecoder::SetDeviceConfig(config); |
| 485 | break; |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 490 | /////////////////////////////////////////////////////////////////////////////// |
| 491 | |
| 492 | static JNINativeMethod gMethods[] = { |
| 493 | { "nativeDecodeStream", |
| 494 | "(Ljava/io/InputStream;[BLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| 495 | (void*)nativeDecodeStream |
| 496 | }, |
| 497 | |
| 498 | { "nativeDecodeFileDescriptor", |
| 499 | "(Ljava/io/FileDescriptor;Landroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| 500 | (void*)nativeDecodeFileDescriptor |
| 501 | }, |
| 502 | |
| 503 | { "nativeDecodeAsset", |
| 504 | "(ILandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| 505 | (void*)nativeDecodeAsset |
| 506 | }, |
| 507 | |
| 508 | { "nativeDecodeByteArray", |
| 509 | "([BIILandroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| 510 | (void*)nativeDecodeByteArray |
| 511 | }, |
| 512 | |
| 513 | { "nativeScaleNinePatch", |
| 514 | "([BFLandroid/graphics/Rect;)[B", |
| 515 | (void*)nativeScaleNinePatch |
Mike Reed | ab4a0c1 | 2010-01-26 10:13:53 -0500 | [diff] [blame] | 516 | }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 517 | |
Mike Reed | ab4a0c1 | 2010-01-26 10:13:53 -0500 | [diff] [blame] | 518 | { "nativeSetDefaultConfig", "(I)V", (void*)nativeSetDefaultConfig }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 519 | }; |
| 520 | |
| 521 | static JNINativeMethod gOptionsMethods[] = { |
| 522 | { "requestCancel", "()V", (void*)nativeRequestCancel } |
| 523 | }; |
| 524 | |
| 525 | static jclass make_globalref(JNIEnv* env, const char classname[]) { |
| 526 | jclass c = env->FindClass(classname); |
| 527 | SkASSERT(c); |
| 528 | return (jclass)env->NewGlobalRef(c); |
| 529 | } |
| 530 | |
| 531 | static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz, |
| 532 | const char fieldname[], const char type[]) { |
| 533 | jfieldID id = env->GetFieldID(clazz, fieldname, type); |
| 534 | SkASSERT(id); |
| 535 | return id; |
| 536 | } |
| 537 | |
| 538 | #define kClassPathName "android/graphics/BitmapFactory" |
| 539 | |
| 540 | #define RETURN_ERR_IF_NULL(value) \ |
| 541 | do { if (!(value)) { assert(0); return -1; } } while (false) |
| 542 | |
| 543 | int register_android_graphics_BitmapFactory(JNIEnv* env); |
| 544 | int register_android_graphics_BitmapFactory(JNIEnv* env) { |
| 545 | gOptions_class = make_globalref(env, "android/graphics/BitmapFactory$Options"); |
| 546 | gOptions_justBoundsFieldID = getFieldIDCheck(env, gOptions_class, "inJustDecodeBounds", "Z"); |
| 547 | gOptions_sampleSizeFieldID = getFieldIDCheck(env, gOptions_class, "inSampleSize", "I"); |
| 548 | gOptions_configFieldID = getFieldIDCheck(env, gOptions_class, "inPreferredConfig", |
| 549 | "Landroid/graphics/Bitmap$Config;"); |
| 550 | gOptions_ditherFieldID = getFieldIDCheck(env, gOptions_class, "inDither", "Z"); |
Mike Reed | c70e06b | 2009-04-24 11:09:12 -0400 | [diff] [blame] | 551 | gOptions_purgeableFieldID = getFieldIDCheck(env, gOptions_class, "inPurgeable", "Z"); |
| 552 | gOptions_shareableFieldID = getFieldIDCheck(env, gOptions_class, "inInputShareable", "Z"); |
Mike Reed | 1b22b97 | 2009-07-17 11:21:47 -0400 | [diff] [blame] | 553 | gOptions_nativeAllocFieldID = getFieldIDCheck(env, gOptions_class, "inNativeAlloc", "Z"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 554 | gOptions_widthFieldID = getFieldIDCheck(env, gOptions_class, "outWidth", "I"); |
| 555 | gOptions_heightFieldID = getFieldIDCheck(env, gOptions_class, "outHeight", "I"); |
| 556 | gOptions_mimeFieldID = getFieldIDCheck(env, gOptions_class, "outMimeType", "Ljava/lang/String;"); |
Ray Chen | 0a6a0e9 | 2009-04-02 01:31:49 -0700 | [diff] [blame] | 557 | gOptions_mCancelID = getFieldIDCheck(env, gOptions_class, "mCancel", "Z"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 558 | |
| 559 | gFileDescriptor_class = make_globalref(env, "java/io/FileDescriptor"); |
| 560 | gFileDescriptor_descriptor = getFieldIDCheck(env, gFileDescriptor_class, "descriptor", "I"); |
| 561 | |
| 562 | int ret = AndroidRuntime::registerNativeMethods(env, |
| 563 | "android/graphics/BitmapFactory$Options", |
| 564 | gOptionsMethods, |
| 565 | SK_ARRAY_COUNT(gOptionsMethods)); |
| 566 | if (ret) { |
| 567 | return ret; |
| 568 | } |
| 569 | return android::AndroidRuntime::registerNativeMethods(env, kClassPathName, |
| 570 | gMethods, SK_ARRAY_COUNT(gMethods)); |
| 571 | } |