// since we "may" create a purgeable imageref, we require the stream be ref'able
// i.e. dynamically allocated, since its lifetime may exceed the current stack
// frame.
static jobject doDecode(JNIEnv* env, SkStreamRewindable* stream, jobject padding,
jobject options, bool allowPurgeable, bool forcePurgeable = false) {
int sampleSize = 1;
SkImageDecoder::Mode mode = SkImageDecoder::kDecodePixels_Mode;
SkBitmap::Config prefConfig = SkBitmap::kARGB_8888_Config;
bool doDither = true;
bool isMutable = false;
float scale = 1.0f;
bool isPurgeable = forcePurgeable || (allowPurgeable && optionsPurgeable(env, options));
bool preferQualityOverSpeed = false;
bool requireUnpremultiplied = false;
jobject javaBitmap = NULL;
if (options != NULL) {
sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID);
if (optionsJustBounds(env, options)) {
mode = SkImageDecoder::kDecodeBounds_Mode;
}
// 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);
isMutable = env->GetBooleanField(options, gOptions_mutableFieldID);
doDither = env->GetBooleanField(options, gOptions_ditherFieldID);
preferQualityOverSpeed = env->GetBooleanField(options,
gOptions_preferQualityOverSpeedFieldID);
requireUnpremultiplied = !env->GetBooleanField(options, gOptions_premultipliedFieldID);
javaBitmap = env->GetObjectField(options, gOptions_bitmapFieldID);
if (env->GetBooleanField(options, gOptions_scaledFieldID)) {
const int density = env->GetIntField(options, gOptions_densityFieldID);
const int targetDensity = env->GetIntField(options, gOptions_targetDensityFieldID);
const int screenDensity = env->GetIntField(options, gOptions_screenDensityFieldID);
if (density != 0 && targetDensity != 0 && density != screenDensity) {
scale = (float) targetDensity / density;
}
}
}
const bool willScale = scale != 1.0f;
isPurgeable &= !willScale;
SkImageDecoder* decoder = SkImageDecoder::Factory(stream);
if (decoder == NULL) {
return nullObjectReturn("SkImageDecoder::Factory returned null");
}
decoder->setSampleSize(sampleSize);
decoder->setDitherImage(doDither);
decoder->setPreferQualityOverSpeed(preferQualityOverSpeed);
decoder->setRequireUnpremultipliedColors(requireUnpremultiplied);
SkBitmap* outputBitmap = NULL;
unsigned int existingBufferSize = 0;
if (javaBitmap != NULL) {
outputBitmap = (SkBitmap*) env->GetIntField(javaBitmap, gBitmap_nativeBitmapFieldID);
if (outputBitmap->isImmutable()) {
ALOGW("Unable to reuse an immutable bitmap as an image decoder target.");
javaBitmap = NULL;
outputBitmap = NULL;
} else {
existingBufferSize = GraphicsJNI::getBitmapAllocationByteCount(env, javaBitmap);
}
}
SkAutoTDelete<SkBitmap> adb(outputBitmap == NULL ? new SkBitmap : NULL);
if (outputBitmap == NULL) outputBitmap = adb.get();
NinePatchPeeker peeker(decoder);
decoder->setPeeker(&peeker);
SkImageDecoder::Mode decodeMode = isPurgeable ? SkImageDecoder::kDecodeBounds_Mode : mode;
JavaPixelAllocator javaAllocator(env);
RecyclingPixelAllocator recyclingAllocator(outputBitmap->pixelRef(), existingBufferSize);
ScaleCheckingAllocator scaleCheckingAllocator(scale, existingBufferSize);
SkBitmap::Allocator* outputAllocator = (javaBitmap != NULL) ?
(SkBitmap::Allocator*)&recyclingAllocator : (SkBitmap::Allocator*)&javaAllocator;
if (decodeMode != SkImageDecoder::kDecodeBounds_Mode) {
if (!willScale) {
// If the java allocator is being used to allocate the pixel memory, the decoder
// need not write zeroes, since the memory is initialized to 0.
decoder->setSkipWritingZeroes(outputAllocator == &javaAllocator);
decoder->setAllocator(outputAllocator);
} else if (javaBitmap != NULL) {
// check for eventual scaled bounds at allocation time, so we don't decode the bitmap
// only to find the scaled result too large to fit in the allocation
decoder->setAllocator(&scaleCheckingAllocator);
}
}
// Only setup the decoder to be deleted after its stack-based, refcounted
// components (allocators, peekers, etc) are declared. This prevents RefCnt
// asserts from firing due to the order objects are deleted from the stack.
SkAutoTDelete<SkImageDecoder> add(decoder);
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 (options != NULL && env->GetBooleanField(options, gOptions_mCancelID)) {
return nullObjectReturn("gOptions_mCancelID");
}
SkBitmap decodingBitmap;
if (!decoder->decode(stream, &decodingBitmap, prefConfig, decodeMode)) {
return nullObjectReturn("decoder->decode returned false");
}
int scaledWidth = decodingBitmap.width();
int scaledHeight = decodingBitmap.height();
if (willScale && mode != SkImageDecoder::kDecodeBounds_Mode) {
scaledWidth = int(scaledWidth * scale + 0.5f);
scaledHeight = int(scaledHeight * scale + 0.5f);
}
// update options (if any)
if (options != NULL) {
env->SetIntField(options, gOptions_widthFieldID, scaledWidth);
env->SetIntField(options, gOptions_heightFieldID, scaledHeight);
env->SetObjectField(options, gOptions_mimeFieldID,
getMimeTypeString(env, decoder->getFormat()));
}
// if we're in justBounds mode, return now (skip the java bitmap)
if (mode == SkImageDecoder::kDecodeBounds_Mode) {
return NULL;
}
jbyteArray ninePatchChunk = NULL;
if (peeker.fPatch != NULL) {
if (willScale) {
scaleNinePatchChunk(peeker.fPatch, scale);
}
size_t ninePatchArraySize = peeker.fPatch->serializedSize();
ninePatchChunk = env->NewByteArray(ninePatchArraySize);
if (ninePatchChunk == NULL) {
return nullObjectReturn("ninePatchChunk == null");
}
jbyte* array = (jbyte*) env->GetPrimitiveArrayCritical(ninePatchChunk, NULL);
if (array == NULL) {
return nullObjectReturn("primitive array == null");
}
peeker.fPatch->serialize(array);
env->ReleasePrimitiveArrayCritical(ninePatchChunk, array, 0);
}
jintArray layoutBounds = NULL;
if (peeker.fLayoutBounds != NULL) {
layoutBounds = env->NewIntArray(4);
if (layoutBounds == NULL) {
return nullObjectReturn("layoutBounds == null");
}
jint scaledBounds[4];
if (willScale) {
for (int i=0; i<4; i++) {
scaledBounds[i] = (jint)((((jint*)peeker.fLayoutBounds)[i]*scale) + .5f);
}
} else {
memcpy(scaledBounds, (jint*)peeker.fLayoutBounds, sizeof(scaledBounds));
}
env->SetIntArrayRegion(layoutBounds, 0, 4, scaledBounds);
if (javaBitmap != NULL) {
env->SetObjectField(javaBitmap, gBitmap_layoutBoundsFieldID, layoutBounds);
}
}
if (willScale) {
// This is weird so let me explain: we could use the scale parameter
// directly, but for historical reasons this is how the corresponding
// Dalvik code has always behaved. We simply recreate the behavior here.
// The result is slightly different from simply using scale because of
// the 0.5f rounding bias applied when computing the target image size
const float sx = scaledWidth / float(decodingBitmap.width());
const float sy = scaledHeight / float(decodingBitmap.height());
// TODO: avoid copying when scaled size equals decodingBitmap size
SkBitmap::Config config = configForScaledOutput(decodingBitmap.config());
outputBitmap->setConfig(config, scaledWidth, scaledHeight);
outputBitmap->setIsOpaque(decodingBitmap.isOpaque());
if (!outputBitmap->allocPixels(outputAllocator, NULL)) {
return nullObjectReturn("allocation failed for scaled bitmap");
}
// If outputBitmap's pixels are newly allocated by Java, there is no need
// to erase to 0, since the pixels were initialized to 0.
if (outputAllocator != &javaAllocator) {
outputBitmap->eraseColor(0);
}
SkPaint paint;
paint.setFilterBitmap(true);
SkCanvas canvas(*outputBitmap);
canvas.scale(sx, sy);
canvas.drawBitmap(decodingBitmap, 0.0f, 0.0f, &paint);
} else {
outputBitmap->swap(decodingBitmap);
}
if (padding) {
if (peeker.fPatch != NULL) {
GraphicsJNI::set_jrect(env, padding,
peeker.fPatch->paddingLeft, peeker.fPatch->paddingTop,
peeker.fPatch->paddingRight, peeker.fPatch->paddingBottom);
} else {
GraphicsJNI::set_jrect(env, padding, -1, -1, -1, -1);
}
}
SkPixelRef* pr;
if (isPurgeable) {
pr = installPixelRef(outputBitmap, stream, sampleSize, doDither);
} else {
// if we get here, we're in kDecodePixels_Mode and will therefore
// already have a pixelref installed.
pr = outputBitmap->pixelRef();
}
if (pr == NULL) {
return nullObjectReturn("Got null SkPixelRef");
}
if (!isMutable && javaBitmap == NULL) {
// promise we will never change our pixels (great for sharing and pictures)
pr->setImmutable();
}
// detach bitmap from its autodeleter, since we want to own it now
adb.detach();
if (javaBitmap != NULL) {
bool isPremultiplied = !requireUnpremultiplied;
GraphicsJNI::reinitBitmap(env, javaBitmap, outputBitmap, isPremultiplied);
outputBitmap->notifyPixelsChanged();
// If a java bitmap was passed in for reuse, pass it back
return javaBitmap;
}
int bitmapCreateFlags = 0x0;
if (isMutable) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Mutable;
if (!requireUnpremultiplied) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Premultiplied;
// now create the java bitmap
return GraphicsJNI::createBitmap(env, outputBitmap, javaAllocator.getStorageObj(),
bitmapCreateFlags, ninePatchChunk, layoutBounds, -1);
}
static jobject doDecode(JNIEnv* env, SkStreamRewindable* stream, jobject padding, jobject options) {
int sampleSize = 1;
int preferSize = 0;
int postproc = 0;
int postprocflag = 0;
#ifdef MTK_IMAGE_DC_SUPPORT
void* dc;
bool dcflag = false;
jint* pdynamicCon = NULL;
jintArray dynamicCon;
jsize size = 0;
#endif
SkImageDecoder::Mode decodeMode = SkImageDecoder::kDecodePixels_Mode;
SkColorType prefColorType = kN32_SkColorType;
bool doDither = true;
bool isMutable = false;
float scale = 1.0f;
bool preferQualityOverSpeed = false;
bool requireUnpremultiplied = false;
jobject javaBitmap = NULL;
if (options != NULL) {
sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID);
if (optionsJustBounds(env, options)) {
decodeMode = SkImageDecoder::kDecodeBounds_Mode;
}
// 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);
isMutable = env->GetBooleanField(options, gOptions_mutableFieldID);
doDither = env->GetBooleanField(options, gOptions_ditherFieldID);
preferQualityOverSpeed = env->GetBooleanField(options,
gOptions_preferQualityOverSpeedFieldID);
requireUnpremultiplied = !env->GetBooleanField(options, gOptions_premultipliedFieldID);
javaBitmap = env->GetObjectField(options, gOptions_bitmapFieldID);
postproc = env->GetBooleanField(options, gOptions_postprocFieldID);
postprocflag = env->GetIntField(options, gOptions_postprocflagFieldID);
#ifdef MTK_IMAGE_DC_SUPPORT
dcflag = env->GetBooleanField(options, gOptions_dynamicConflagFieldID);
dynamicCon = (jintArray)env->GetObjectField(options, gOptions_dynamicConFieldID);
//pdynamicCon = (unsigned int*)env->GetIntArrayElements(dynamicCon, 0);
pdynamicCon = env->GetIntArrayElements(dynamicCon, NULL);
size = env->GetArrayLength(dynamicCon);
//for (int i=0; i<size; i++)
//{
//ALOGD("pdynamicCon[%d]=%d", i, pdynamicCon[i]);
//}
//ALOGD("BitmapFactory.cpp postproc=%d, postprocflag=%d", postproc, postprocflag);
//ALOGD("BitmapFactory.cpp dcflag=%d", dcflag);
//ALOGD("BitmapFactory.cpp dynamicCon=%p", dynamicCon);
//ALOGD("BitmapFactory.cpp size=%d", size);
#endif
if (env->GetBooleanField(options, gOptions_scaledFieldID)) {
const int density = env->GetIntField(options, gOptions_densityFieldID);
const int targetDensity = env->GetIntField(options, gOptions_targetDensityFieldID);
const int screenDensity = env->GetIntField(options, gOptions_screenDensityFieldID);
if (density != 0 && targetDensity != 0 && density != screenDensity) {
scale = (float) targetDensity / density;
}
}
}
const bool willScale = scale != 1.0f;
SkImageDecoder* decoder = SkImageDecoder::Factory(stream);
if (decoder == NULL) {
return nullObjectReturn("SkImageDecoder::Factory returned null");
}
decoder->setSampleSize(sampleSize);
decoder->setDitherImage(doDither);
decoder->setPreferQualityOverSpeed(preferQualityOverSpeed);
decoder->setRequireUnpremultipliedColors(requireUnpremultiplied);
decoder->setPreferSize(preferSize);
decoder->setPostProcFlag((postproc | (postprocflag << 4)));
#ifdef MTK_IMAGE_DC_SUPPORT
if (dcflag == true) {
dc= (void*)pdynamicCon;
int len = (int)size;
decoder->setDynamicCon(dc, len);
} else {
dc = NULL;
decoder->setDynamicCon(dc, 0);
}
// (env)->ReleaseIntArrayElements(dynamicCon, pdynamicCon, 0);
#endif
SkBitmap* outputBitmap = NULL;
unsigned int existingBufferSize = 0;
if (javaBitmap != NULL) {
outputBitmap = (SkBitmap*) env->GetLongField(javaBitmap, gBitmap_nativeBitmapFieldID);
if (outputBitmap->isImmutable()) {
ALOGW("Unable to reuse an immutable bitmap as an image decoder target.");
javaBitmap = NULL;
outputBitmap = NULL;
} else {
existingBufferSize = GraphicsJNI::getBitmapAllocationByteCount(env, javaBitmap);
}
}
SkAutoTDelete<SkBitmap> adb(outputBitmap == NULL ? new SkBitmap : NULL);
if (outputBitmap == NULL) outputBitmap = adb.get();
NinePatchPeeker peeker(decoder);
decoder->setPeeker(&peeker);
JavaPixelAllocator javaAllocator(env);
RecyclingPixelAllocator recyclingAllocator(outputBitmap->pixelRef(), existingBufferSize);
ScaleCheckingAllocator scaleCheckingAllocator(scale, existingBufferSize);
SkBitmap::Allocator* outputAllocator = (javaBitmap != NULL) ?
(SkBitmap::Allocator*)&recyclingAllocator : (SkBitmap::Allocator*)&javaAllocator;
if (decodeMode != SkImageDecoder::kDecodeBounds_Mode) {
if (!willScale) {
// If the java allocator is being used to allocate the pixel memory, the decoder
// need not write zeroes, since the memory is initialized to 0.
decoder->setSkipWritingZeroes(outputAllocator == &javaAllocator);
decoder->setAllocator(outputAllocator);
} else if (javaBitmap != NULL) {
// check for eventual scaled bounds at allocation time, so we don't decode the bitmap
// only to find the scaled result too large to fit in the allocation
decoder->setAllocator(&scaleCheckingAllocator);
}
}
// Only setup the decoder to be deleted after its stack-based, refcounted
// components (allocators, peekers, etc) are declared. This prevents RefCnt
// asserts from firing due to the order objects are deleted from the stack.
SkAutoTDelete<SkImageDecoder> add(decoder);
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 (options != NULL && env->GetBooleanField(options, gOptions_mCancelID)) {
return nullObjectReturn("gOptions_mCancelID");
}
SkBitmap decodingBitmap;
if (!decoder->decode(stream, &decodingBitmap, prefColorType, decodeMode)) {
return nullObjectReturn("decoder->decode returned false");
}
int scaledWidth = decodingBitmap.width();
int scaledHeight = decodingBitmap.height();
if (willScale && decodeMode != SkImageDecoder::kDecodeBounds_Mode) {
scaledWidth = int(scaledWidth * scale + 0.5f);
scaledHeight = int(scaledHeight * scale + 0.5f);
}
// update options (if any)
if (options != NULL) {
env->SetIntField(options, gOptions_widthFieldID, scaledWidth);
env->SetIntField(options, gOptions_heightFieldID, scaledHeight);
env->SetObjectField(options, gOptions_mimeFieldID,
getMimeTypeString(env, decoder->getFormat()));
}
// if we're in justBounds mode, return now (skip the java bitmap)
if (decodeMode == SkImageDecoder::kDecodeBounds_Mode) {
return NULL;
}
jbyteArray ninePatchChunk = NULL;
if (peeker.mPatch != NULL) {
if (willScale) {
scaleNinePatchChunk(peeker.mPatch, scale, scaledWidth, scaledHeight);
}
size_t ninePatchArraySize = peeker.mPatch->serializedSize();
ninePatchChunk = env->NewByteArray(ninePatchArraySize);
if (ninePatchChunk == NULL) {
return nullObjectReturn("ninePatchChunk == null");
}
jbyte* array = (jbyte*) env->GetPrimitiveArrayCritical(ninePatchChunk, NULL);
if (array == NULL) {
return nullObjectReturn("primitive array == null");
}
memcpy(array, peeker.mPatch, peeker.mPatchSize);
env->ReleasePrimitiveArrayCritical(ninePatchChunk, array, 0);
}
jobject ninePatchInsets = NULL;
if (peeker.mHasInsets) {
ninePatchInsets = env->NewObject(gInsetStruct_class, gInsetStruct_constructorMethodID,
peeker.mOpticalInsets[0], peeker.mOpticalInsets[1], peeker.mOpticalInsets[2], peeker.mOpticalInsets[3],
peeker.mOutlineInsets[0], peeker.mOutlineInsets[1], peeker.mOutlineInsets[2], peeker.mOutlineInsets[3],
peeker.mOutlineRadius, peeker.mOutlineAlpha, scale);
if (ninePatchInsets == NULL) {
return nullObjectReturn("nine patch insets == null");
}
if (javaBitmap != NULL) {
env->SetObjectField(javaBitmap, gBitmap_ninePatchInsetsFieldID, ninePatchInsets);
}
}
if (willScale) {
// This is weird so let me explain: we could use the scale parameter
// directly, but for historical reasons this is how the corresponding
// Dalvik code has always behaved. We simply recreate the behavior here.
// The result is slightly different from simply using scale because of
// the 0.5f rounding bias applied when computing the target image size
const float sx = scaledWidth / float(decodingBitmap.width());
const float sy = scaledHeight / float(decodingBitmap.height());
// TODO: avoid copying when scaled size equals decodingBitmap size
SkColorType colorType = colorTypeForScaledOutput(decodingBitmap.colorType());
// FIXME: If the alphaType is kUnpremul and the image has alpha, the
// colors may not be correct, since Skia does not yet support drawing
// to/from unpremultiplied bitmaps.
outputBitmap->setInfo(SkImageInfo::Make(scaledWidth, scaledHeight,
colorType, decodingBitmap.alphaType()));
if (!outputBitmap->allocPixels(outputAllocator, NULL)) {
return nullObjectReturn("allocation failed for scaled bitmap");
}
// If outputBitmap's pixels are newly allocated by Java, there is no need
// to erase to 0, since the pixels were initialized to 0.
if (outputAllocator != &javaAllocator) {
outputBitmap->eraseColor(0);
}
SkPaint paint;
paint.setFilterLevel(SkPaint::kLow_FilterLevel);
SkCanvas canvas(*outputBitmap);
canvas.scale(sx, sy);
canvas.drawBitmap(decodingBitmap, 0.0f, 0.0f, &paint);
} else {
outputBitmap->swap(decodingBitmap);
}
if (padding) {
if (peeker.mPatch != NULL) {
GraphicsJNI::set_jrect(env, padding,
peeker.mPatch->paddingLeft, peeker.mPatch->paddingTop,
peeker.mPatch->paddingRight, peeker.mPatch->paddingBottom);
} else {
GraphicsJNI::set_jrect(env, padding, -1, -1, -1, -1);
}
}
// if we get here, we're in kDecodePixels_Mode and will therefore
// already have a pixelref installed.
if (outputBitmap->pixelRef() == NULL) {
return nullObjectReturn("Got null SkPixelRef");
}
if (!isMutable && javaBitmap == NULL) {
// promise we will never change our pixels (great for sharing and pictures)
outputBitmap->setImmutable();
}
// detach bitmap from its autodeleter, since we want to own it now
adb.detach();
if (javaBitmap != NULL) {
bool isPremultiplied = !requireUnpremultiplied;
GraphicsJNI::reinitBitmap(env, javaBitmap, outputBitmap, isPremultiplied);
outputBitmap->notifyPixelsChanged();
// If a java bitmap was passed in for reuse, pass it back
return javaBitmap;
}
int bitmapCreateFlags = 0x0;
if (isMutable) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Mutable;
if (!requireUnpremultiplied) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Premultiplied;
// now create the java bitmap
return GraphicsJNI::createBitmap(env, outputBitmap, javaAllocator.getStorageObj(),
bitmapCreateFlags, ninePatchChunk, ninePatchInsets, -1);
}