Android/frameworks_base
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

am 766d7236: Merge change 4737 into donut

Browse Source 
Merge commit '766d7236c84f636b816d71189e309e67db1f593a'

* commit '766d7236c84f636b816d71189e309e67db1f593a':
  Add prepareToDraw() to Bitmap for fixing http://b/issue?id=1907995.
This commit is contained in:
Android (Google) Code Review
2009-06-22 03:50:23 -07:00
committed by The Android Open Source Project
parent a44e01d46b 766d7236c8
commit ce1311a3a0
3 changed files with 103 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

106
graphics/java/android/graphics/Bitmap.java
View File

@@ -16,14 +16,14 @@
package android.graphics;
import android.os.Parcelable;
import android.os.Parcel;
import android.os.Parcelable;
import java.io.OutputStream;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.ShortBuffer;
import java.nio.IntBuffer;
import java.io.OutputStream;
import java.nio.ShortBuffer;
public final class Bitmap implements Parcelable {
/**
@@ -32,14 +32,14 @@ public final class Bitmap implements Parcelable {
* @see Bitmap#getDensityScale()
* @see Bitmap#setDensityScale(float)
*
* @hide pending API council approval
* @hide pending API council approval
*/
public static final float DENSITY_SCALE_UNKNOWN = -1.0f;
// Note: mNativeBitmap is used by FaceDetector_jni.cpp
// Don't change/rename without updating FaceDetector_jni.cpp
private final int mNativeBitmap;
private final boolean mIsMutable;
private byte[] mNinePatchChunk; // may be null
private int mWidth = -1;
@@ -63,7 +63,7 @@ public final class Bitmap implements Parcelable {
if (nativeBitmap == 0) {
throw new RuntimeException("internal error: native bitmap is 0");
}
// we delete this in our finalizer
mNativeBitmap = nativeBitmap;
mIsMutable = isMutable;
@@ -83,7 +83,7 @@ public final class Bitmap implements Parcelable {
*
* @see #setDensityScale(float)
* @see #isAutoScalingEnabled()
* @see #setAutoScalingEnabled(boolean)
* @see #setAutoScalingEnabled(boolean)
* @see android.util.DisplayMetrics#DEFAULT_DENSITY
* @see android.util.DisplayMetrics#density
* @see #DENSITY_SCALE_UNKNOWN
@@ -105,7 +105,7 @@ public final class Bitmap implements Parcelable {
*
* @see #getDensityScale()
* @see #isAutoScalingEnabled()
* @see #setAutoScalingEnabled(boolean)
* @see #setAutoScalingEnabled(boolean)
* @see android.util.DisplayMetrics#DEFAULT_DENSITY
* @see android.util.DisplayMetrics#density
* @see #DENSITY_SCALE_UNKNOWN
@@ -126,7 +126,7 @@ public final class Bitmap implements Parcelable {
* <p>Auto scaling is turned off by default. If auto scaling is enabled but the
* bitmap has an unknown density scale, then the bitmap will never be automatically
* scaled at drawing time.</p>
*
*
* @return True if the bitmap must be scaled at drawing time, false otherwise.
*
* @see #setAutoScalingEnabled(boolean)
@@ -167,7 +167,7 @@ public final class Bitmap implements Parcelable {
public void setNinePatchChunk(byte[] chunk) {
mNinePatchChunk = chunk;
}
/**
* Free up the memory associated with this bitmap's pixels, and mark the
* bitmap as "dead", meaning it will throw an exception if getPixels() or
@@ -194,7 +194,7 @@ public final class Bitmap implements Parcelable {
public final boolean isRecycled() {
return mRecycled;
}
/**
* This is called by methods that want to throw an exception if the bitmap
* has already been recycled.
@@ -204,7 +204,7 @@ public final class Bitmap implements Parcelable {
throw new IllegalStateException(errorMessage);
}
}
/**
* Common code for checking that x and y are >= 0
*
@@ -246,16 +246,16 @@ public final class Bitmap implements Parcelable {
this.nativeInt = ni;
}
final int nativeInt;
/* package */ static Config nativeToConfig(int ni) {
return sConfigs[ni];
}
private static Config sConfigs[] = {
null, null, ALPHA_8, null, RGB_565, ARGB_4444, ARGB_8888
};
}
/**
* Copy the bitmap's pixels into the specified buffer (allocated by the
* caller). An exception is thrown if the buffer is not large enough to
@@ -275,16 +275,16 @@ public final class Bitmap implements Parcelable {
} else {
throw new RuntimeException("unsupported Buffer subclass");
}
long bufferSize = (long)elements << shift;
long pixelSize = (long)getRowBytes() * getHeight();
if (bufferSize < pixelSize) {
throw new RuntimeException("Buffer not large enough for pixels");
}
nativeCopyPixelsToBuffer(mNativeBitmap, dst);
// now update the buffer's position
int position = dst.position();
position += pixelSize >> shift;
@@ -299,7 +299,7 @@ public final class Bitmap implements Parcelable {
*/
public void copyPixelsFromBuffer(Buffer src) {
checkRecycled("copyPixelsFromBuffer called on recycled bitmap");
int elements = src.remaining();
int shift;
if (src instanceof ByteBuffer) {
@@ -311,17 +311,17 @@ public final class Bitmap implements Parcelable {
} else {
throw new RuntimeException("unsupported Buffer subclass");
}
long bufferBytes = (long)elements << shift;
long bitmapBytes = (long)getRowBytes() * getHeight();
if (bufferBytes < bitmapBytes) {
throw new RuntimeException("Buffer not large enough for pixels");
}
nativeCopyPixelsFromBuffer(mNativeBitmap, src);
}
/**
* Tries to make a new bitmap based on the dimensions of this bitmap,
* setting the new bitmap's config to the one specified, and then copying
@@ -350,7 +350,7 @@ public final class Bitmap implements Parcelable {
if (m == null) {
m = new Matrix();
}
final int width = src.getWidth();
final int height = src.getHeight();
final float sx = dstWidth / (float)width;
@@ -365,9 +365,9 @@ public final class Bitmap implements Parcelable {
}
}
return b;
return b;
}
/**
* Returns an immutable bitmap from the source bitmap. The new bitmap may
* be the same object as source, or a copy may have been made.
@@ -390,7 +390,7 @@ public final class Bitmap implements Parcelable {
public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height) {
return createBitmap(source, x, y, width, height, null, false);
}
/**
* Returns an immutable bitmap from subset of the source bitmap,
* transformed by the optional matrix.
@@ -425,7 +425,7 @@ public final class Bitmap implements Parcelable {
height == source.getHeight() && (m == null || m.isIdentity())) {
return source;
}
int neww = width;
int newh = height;
Canvas canvas = new Canvas();
@@ -470,7 +470,7 @@ public final class Bitmap implements Parcelable {
return bitmap;
}
/**
* Returns a mutable bitmap with the specified width and height.
*
@@ -484,7 +484,7 @@ public final class Bitmap implements Parcelable {
bm.eraseColor(0); // start with black/transparent pixels
return bm;
}
/**
* Returns a immutable bitmap with the specified width and height, with each
* pixel value set to the corresponding value in the colors array.
@@ -593,7 +593,7 @@ public final class Bitmap implements Parcelable {
return nativeCompress(mNativeBitmap, format.nativeInt, quality,
stream, new byte[WORKING_COMPRESS_STORAGE]);
}
/**
* Returns true if the bitmap is marked as mutable (i.e. can be drawn into)
*/
@@ -610,7 +610,7 @@ public final class Bitmap implements Parcelable {
public final int getHeight() {
return mHeight == -1 ? mHeight = nativeHeight(mNativeBitmap) : mHeight;
}
/**
* Convenience method that returns the width of this bitmap divided
* by the density scale factor.
@@ -648,7 +648,7 @@ public final class Bitmap implements Parcelable {
public final int getRowBytes() {
return nativeRowBytes(mNativeBitmap);
}
/**
* If the bitmap's internal config is in one of the public formats, return
* that config, otherwise return null.
@@ -690,7 +690,7 @@ public final class Bitmap implements Parcelable {
checkPixelAccess(x, y);
return nativeGetPixel(mNativeBitmap, x, y);
}
/**
* Returns in pixels[] a copy of the data in the bitmap. Each value is
* a packed int representing a {@link Color}. The stride parameter allows
@@ -722,7 +722,7 @@ public final class Bitmap implements Parcelable {
nativeGetPixels(mNativeBitmap, pixels, offset, stride,
x, y, width, height);
}
/**
* Shared code to check for illegal arguments passed to getPixel()
* or setPixel()
@@ -779,7 +779,7 @@ public final class Bitmap implements Parcelable {
throw new ArrayIndexOutOfBoundsException();
}
}
/**
* Write the specified {@link Color} into the bitmap (assuming it is
* mutable) at the x,y coordinate.
@@ -799,10 +799,10 @@ public final class Bitmap implements Parcelable {
checkPixelAccess(x, y);
nativeSetPixel(mNativeBitmap, x, y, color);
}
/**
* Replace pixels in the bitmap with the colors in the array. Each element
* in the array is a packed int prepresenting a {@link Color}
* in the array is a packed int prepresenting a {@link Color}
*
* @param pixels The colors to write to the bitmap
* @param offset The index of the first color to read from pixels[]
@@ -834,7 +834,7 @@ public final class Bitmap implements Parcelable {
nativeSetPixels(mNativeBitmap, pixels, offset, stride,
x, y, width, height);
}
public static final Parcelable.Creator<Bitmap> CREATOR
= new Parcelable.Creator<Bitmap>() {
/**
@@ -884,7 +884,7 @@ public final class Bitmap implements Parcelable {
public Bitmap extractAlpha() {
return extractAlpha(null, null);
}
/**
* Returns a new bitmap that captures the alpha values of the original.
* These values may be affected by the optional Paint parameter, which
@@ -917,6 +917,22 @@ public final class Bitmap implements Parcelable {
return bm;
}
/**
* Rebuilds any caches associated with the bitmap that are used for
* drawing it. In the case of purgeable bitmaps, this call will attempt to
* ensure that the pixels have been decoded.
* If this is called on more than one bitmap in sequence, the priority is
* given in LRU order (i.e. the last bitmap called will be given highest
* priority).
*
* For bitmaps with no associated caches, this call is effectively a no-op,
* and therefore is harmless.
*/
public void prepareToDraw() {
nativePrepareToDraw(mNativeBitmap);
}
@Override
protected void finalize() throws Throwable {
try {
nativeDestructor(mNativeBitmap);
@@ -924,7 +940,7 @@ public final class Bitmap implements Parcelable {
super.finalize();
}
}
//////////// native methods
private static native Bitmap nativeCreate(int[] colors, int offset,
@@ -944,12 +960,12 @@ public final class Bitmap implements Parcelable {
private static native int nativeRowBytes(int nativeBitmap);
private static native int nativeConfig(int nativeBitmap);
private static native boolean nativeHasAlpha(int nativeBitmap);
private static native int nativeGetPixel(int nativeBitmap, int x, int y);
private static native void nativeGetPixels(int nativeBitmap, int[] pixels,
int offset, int stride, int x,
int y, int width, int height);
private static native void nativeSetPixel(int nativeBitmap, int x, int y,
int color);
private static native void nativeSetPixels(int nativeBitmap, int[] colors,
@@ -969,6 +985,8 @@ public final class Bitmap implements Parcelable {
int nativePaint,
int[] offsetXY);
private static native void nativePrepareToDraw(int nativeBitmap);
/* package */ final int ni() {
return mNativeBitmap;
}