static jobject doBuildTileIndex(JNIEnv* env, SkStream* stream) {
SkImageDecoder* decoder = SkImageDecoder::Factory(stream);
int width, height;
if (NULL == decoder) {
// fail to get decoder, do not forget to free stream
stream->unref();
doThrowIOE(env, "Image format not supported");
return nullObjectReturn("SkImageDecoder::Factory returned null");
}
JavaPixelAllocator *javaAllocator = new JavaPixelAllocator(env);
decoder->setAllocator(javaAllocator);
javaAllocator->unref();
if (!decoder->buildTileIndex(stream, &width, &height)) {
char msg[100];
snprintf(msg, sizeof(msg), "Image failed to decode using %s decoder",
decoder->getFormatName());
// fail to build tile index, do not forget to free stream
stream->unref();
doThrowIOE(env, msg);
return nullObjectReturn("decoder->buildTileIndex returned false");
}
SkBitmapRegionDecoder *bm = new SkBitmapRegionDecoder(decoder, stream, width, height);
return GraphicsJNI::createBitmapRegionDecoder(env, bm);
}
/*
* nine patch not supported
*
* purgeable not supported
* reportSizeToVM not supported
*/
static jobject nativeDecodeRegion(JNIEnv* env, jobject, SkBitmapRegionDecoder *brd,
int start_x, int start_y, int width, int height, jobject options) {
jobject tileBitmap = NULL;
SkImageDecoder *decoder = brd->getDecoder();
int sampleSize = 1;
SkBitmap::Config prefConfig = SkBitmap::kNo_Config;
bool doDither = true;
bool preferQualityOverSpeed = false;
if (NULL != options) {
sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID);
// initialize these, in case we fail later on
env->SetIntField(options, gOptions_widthFieldID, -1);
env->SetIntField(options, gOptions_heightFieldID, -1);
env->SetObjectField(options, gOptions_mimeFieldID, 0);
jobject jconfig = env->GetObjectField(options, gOptions_configFieldID);
prefConfig = GraphicsJNI::getNativeBitmapConfig(env, jconfig);
doDither = env->GetBooleanField(options, gOptions_ditherFieldID);
preferQualityOverSpeed = env->GetBooleanField(options,
gOptions_preferQualityOverSpeedFieldID);
// Get the bitmap for re-use if it exists.
tileBitmap = env->GetObjectField(options, gOptions_bitmapFieldID);
}
decoder->setDitherImage(doDither);
decoder->setPreferQualityOverSpeed(preferQualityOverSpeed);
AutoDecoderCancel adc(options, decoder);
// To fix the race condition in case "requestCancelDecode"
// happens earlier than AutoDecoderCancel object is added
// to the gAutoDecoderCancelMutex linked list.
if (NULL != options && env->GetBooleanField(options, gOptions_mCancelID)) {
return nullObjectReturn("gOptions_mCancelID");;
}
SkIRect region;
region.fLeft = start_x;
region.fTop = start_y;
region.fRight = start_x + width;
region.fBottom = start_y + height;
SkBitmap* bitmap = NULL;
SkTScopedPtr<SkBitmap> adb;
if (tileBitmap != NULL) {
// Re-use bitmap.
bitmap = GraphicsJNI::getNativeBitmap(env, tileBitmap);
}
if (bitmap == NULL) {
bitmap = new SkBitmap;
adb.reset(bitmap);
}
if (!brd->decodeRegion(bitmap, region, prefConfig, sampleSize)) {
return nullObjectReturn("decoder->decodeRegion returned false");
}
// update options (if any)
if (NULL != options) {
env->SetIntField(options, gOptions_widthFieldID, bitmap->width());
env->SetIntField(options, gOptions_heightFieldID, bitmap->height());
// TODO: set the mimeType field with the data from the codec.
// but how to reuse a set of strings, rather than allocating new one
// each time?
env->SetObjectField(options, gOptions_mimeFieldID,
getMimeTypeString(env, decoder->getFormat()));
}
SkPixelRef* pr = bitmap->pixelRef();
// promise we will never change our pixels (great for sharing and pictures)
// pr->setImmutable();
if(tileBitmap != NULL) {
return tileBitmap;
}
// detach bitmap from its autodeleter, since we want to own it now
adb.release();
JavaPixelAllocator* allocator = (JavaPixelAllocator*) decoder->getAllocator();
jbyteArray buff = allocator->getStorageObjAndReset();
return GraphicsJNI::createBitmap(env, bitmap, buff, false, NULL, -1);
}
/*
* nine patch not supported
*
* purgeable not supported
* reportSizeToVM not supported
*/
static jobject nativeDecodeRegion(JNIEnv* env, jobject, jlong brdHandle,
jint start_x, jint start_y, jint width, jint height, jobject options) {
SkBitmapRegionDecoder *brd = reinterpret_cast<SkBitmapRegionDecoder*>(brdHandle);
jobject tileBitmap = NULL;
SkImageDecoder *decoder = brd->getDecoder();
int sampleSize = 1;
SkColorType prefColorType = kUnknown_SkColorType;
bool doDither = true;
bool preferQualityOverSpeed = false;
bool requireUnpremultiplied = false;
if (NULL != options) {
sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID);
// initialize these, in case we fail later on
env->SetIntField(options, gOptions_widthFieldID, -1);
env->SetIntField(options, gOptions_heightFieldID, -1);
env->SetObjectField(options, gOptions_mimeFieldID, 0);
jobject jconfig = env->GetObjectField(options, gOptions_configFieldID);
prefColorType = GraphicsJNI::getNativeBitmapColorType(env, jconfig);
doDither = env->GetBooleanField(options, gOptions_ditherFieldID);
preferQualityOverSpeed = env->GetBooleanField(options,
gOptions_preferQualityOverSpeedFieldID);
// Get the bitmap for re-use if it exists.
tileBitmap = env->GetObjectField(options, gOptions_bitmapFieldID);
requireUnpremultiplied = !env->GetBooleanField(options, gOptions_premultipliedFieldID);
}
decoder->setDitherImage(doDither);
decoder->setPreferQualityOverSpeed(preferQualityOverSpeed);
decoder->setRequireUnpremultipliedColors(requireUnpremultiplied);
AutoDecoderCancel adc(options, decoder);
// To fix the race condition in case "requestCancelDecode"
// happens earlier than AutoDecoderCancel object is added
// to the gAutoDecoderCancelMutex linked list.
if (NULL != options && env->GetBooleanField(options, gOptions_mCancelID)) {
return nullObjectReturn("gOptions_mCancelID");;
}
SkIRect region;
region.fLeft = start_x;
region.fTop = start_y;
region.fRight = start_x + width;
region.fBottom = start_y + height;
SkBitmap* bitmap = NULL;
SkAutoTDelete<SkBitmap> adb;
if (tileBitmap != NULL) {
// Re-use bitmap.
bitmap = GraphicsJNI::getNativeBitmap(env, tileBitmap);
}
if (bitmap == NULL) {
bitmap = new SkBitmap;
adb.reset(bitmap);
}
if (!brd->decodeRegion(bitmap, region, prefColorType, sampleSize)) {
return nullObjectReturn("decoder->decodeRegion returned false");
}
// update options (if any)
if (NULL != options) {
env->SetIntField(options, gOptions_widthFieldID, bitmap->width());
env->SetIntField(options, gOptions_heightFieldID, bitmap->height());
// TODO: set the mimeType field with the data from the codec.
// but how to reuse a set of strings, rather than allocating new one
// each time?
env->SetObjectField(options, gOptions_mimeFieldID,
getMimeTypeString(env, decoder->getFormat()));
}
if (tileBitmap != NULL) {
return tileBitmap;
}
// detach bitmap from its autodeleter, since we want to own it now
adb.detach();
JavaPixelAllocator* allocator = (JavaPixelAllocator*) decoder->getAllocator();
jbyteArray buff = allocator->getStorageObjAndReset();
int bitmapCreateFlags = 0;
if (!requireUnpremultiplied) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Premultiplied;
return GraphicsJNI::createBitmap(env, bitmap, buff, bitmapCreateFlags, NULL, NULL, -1);
}
