android.graphics.Bitmap.copyPixelsToBuffer()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中android.graphics.Bitmap.copyPixelsToBuffer()方法的一些代码示例，展示了Bitmap.copyPixelsToBuffer()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Bitmap.copyPixelsToBuffer()方法的具体详情如下：
包路径：android.graphics.Bitmap
类名称：Bitmap
方法名：copyPixelsToBuffer

Bitmap.copyPixelsToBuffer介绍

暂无

代码示例

代码示例来源：origin: Rajawali/Rajawali

public void setBitmap(Bitmap bitmap) {
  mBitmap = bitmap;
  int imageSize = bitmap.getRowBytes() * bitmap.getHeight();
  ByteBuffer uncompressedBuffer = ByteBuffer.allocateDirect(imageSize);
  bitmap.copyPixelsToBuffer(uncompressedBuffer);
  uncompressedBuffer.position(0);
  ByteBuffer compressedBuffer = ByteBuffer.allocateDirect(
      ETC1.getEncodedDataSize(bitmap.getWidth(), bitmap.getHeight())).order(ByteOrder.nativeOrder());
  ETC1.encodeImage(uncompressedBuffer, bitmap.getWidth(), bitmap.getHeight(), 2, 2 * bitmap.getWidth(),
      compressedBuffer);
  mByteBuffers = new ByteBuffer[]{compressedBuffer};
  setWidth(bitmap.getWidth());
  setHeight(bitmap.getHeight());
}

代码示例来源：origin: Rajawali/Rajawali

private void setBitmap(Bitmap bitmap) {
    mBitmap = bitmap;
    int imageSize = bitmap.getRowBytes() * bitmap.getHeight();
    ByteBuffer uncompressedBuffer = ByteBuffer.allocateDirect(imageSize);
    bitmap.copyPixelsToBuffer(uncompressedBuffer);
    uncompressedBuffer.position(0);

    ByteBuffer compressedBuffer = ByteBuffer.allocateDirect(
      ETC1.getEncodedDataSize(bitmap.getWidth(), bitmap.getHeight())).order(ByteOrder.nativeOrder());
    ETC1.encodeImage(uncompressedBuffer, bitmap.getWidth(), bitmap.getHeight(), 2, 2 * bitmap.getWidth(),
      compressedBuffer);
    setCompressionFormat(ETC1.ETC1_RGB8_OES);

    mByteBuffers = new ByteBuffer[]{compressedBuffer};
    setWidth(bitmap.getWidth());
    setHeight(bitmap.getHeight());
  }
}

代码示例来源：origin: stackoverflow.com

imgIn.copyPixelsToBuffer(map);

代码示例来源：origin: stackoverflow.com

if(screenshot){                     
       int screenshotSize = width * height;
       ByteBuffer bb = ByteBuffer.allocateDirect(screenshotSize * 4);
       bb.order(ByteOrder.nativeOrder());
       gl.glReadPixels(0, 0, width, height, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, bb);
       int pixelsBuffer[] = new int[screenshotSize];
       bb.asIntBuffer().get(pixelsBuffer);
       bb = null;
       Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
       bitmap.setPixels(pixelsBuffer, screenshotSize-width, -width, 0, 0, width, height);
       pixelsBuffer = null;
       short sBuffer[] = new short[screenshotSize];
       ShortBuffer sb = ShortBuffer.wrap(sBuffer);
       bitmap.copyPixelsToBuffer(sb);
       //Making created bitmap (from OpenGL points) compatible with Android bitmap
       for (int i = 0; i < screenshotSize; ++i) {                  
         short v = sBuffer[i];
         sBuffer[i] = (short) (((v&0x1f) << 11) | (v&0x7e0) | ((v&0xf800) >> 11));
       }
       sb.rewind();
       bitmap.copyPixelsFromBuffer(sb);
       lastScreenshot = bitmap;
       screenshot = false;
     }

代码示例来源：origin: robolectric/robolectric

@Test(expected = RuntimeException.class)
public void throwsExceptionCopyPixelsToBufferTooSmall() {
 Bitmap bitmapOriginal = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
 ByteBuffer buffer = ByteBuffer.allocate(bitmapOriginal.getByteCount() - 1);
 bitmapOriginal.copyPixelsToBuffer(buffer);
}

代码示例来源：origin: robolectric/robolectric

@Test(expected = RuntimeException.class)
public void throwsExceptionCopyPixelsToBufferNonArgb8888() {
 Bitmap bitmapOriginal = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_4444);
 ByteBuffer buffer = ByteBuffer.allocate(bitmapOriginal.getByteCount());
 bitmapOriginal.copyPixelsToBuffer(buffer);
}

代码示例来源：origin: facebook/facebook-android-sdk

private static void compareImages(Bitmap bmp1, Bitmap bmp2) {
  assertTrue(bmp1.getHeight() == bmp2.getHeight());
  assertTrue(bmp1.getWidth() == bmp1.getWidth());
  ByteBuffer buffer1 = ByteBuffer.allocate(bmp1.getHeight() * bmp1.getRowBytes());
  bmp1.copyPixelsToBuffer(buffer1);
  ByteBuffer buffer2 = ByteBuffer.allocate(bmp2.getHeight() * bmp2.getRowBytes());
  bmp2.copyPixelsToBuffer(buffer2);
  assertTrue(Arrays.equals(buffer1.array(), buffer2.array()));
}

代码示例来源：origin: stackoverflow.com

base.copyPixelsToBuffer(buffBase);
buffBase.rewind();
blend.copyPixelsToBuffer(buffBlend);
buffBlend.rewind();

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

bitmap.copyPixelsToBuffer(data);

代码示例来源：origin: robolectric/robolectric

@Test(expected = RuntimeException.class)
public void throwsExceptionCopyPixelsToLongBuffer() {
 Bitmap bitmapOriginal = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
 LongBuffer buffer = LongBuffer.allocate(bitmapOriginal.getByteCount());
 bitmapOriginal.copyPixelsToBuffer(buffer);
}

代码示例来源：origin: robolectric/robolectric

@Test(expected = RuntimeException.class)
public void throwsExceptionCopyPixelsToShortBuffer() {
 Bitmap bitmapOriginal = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
 ShortBuffer buffer = ShortBuffer.allocate(bitmapOriginal.getByteCount());
 bitmapOriginal.copyPixelsToBuffer(buffer);
}

代码示例来源：origin: robolectric/robolectric

@Test(expected = RuntimeException.class)
public void throwsExceptionCopyPixelsToIntBuffer() {
 Bitmap bitmapOriginal = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
 IntBuffer buffer = IntBuffer.allocate(bitmapOriginal.getByteCount());
 bitmapOriginal.copyPixelsToBuffer(buffer);
}

代码示例来源：origin: robolectric/robolectric

@Test
public void shouldCopyPixelsToBufferAndReconstruct() {
 int width = 10;
 int height = 10;
 Bitmap bitmapOriginal = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
 bitmapOriginal.setPixel(0, 0, 123);
 bitmapOriginal.setPixel(1, 1, 456);
 bitmapOriginal.setPixel(2, 2, 789);
 int[] pixelsOriginal = new int[width * height];
 bitmapOriginal.getPixels(pixelsOriginal, 0, width, 0, 0, width, height);
 ByteBuffer buffer = ByteBuffer.allocate(bitmapOriginal.getByteCount());
 bitmapOriginal.copyPixelsToBuffer(buffer);
 assertThat(buffer.position()).isEqualTo(bitmapOriginal.getByteCount());
 buffer.rewind();
 Bitmap bitmapReconstructed = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
 // Set some random pixels to ensure that they're properly overwritten.
 bitmapReconstructed.setPixel(1,1, 999);
 bitmapReconstructed.setPixel(4,4, 999);
 bitmapReconstructed.copyPixelsFromBuffer(buffer);
 assertThat(buffer.position()).isEqualTo(bitmapOriginal.getByteCount());
 assertThat(bitmapReconstructed.getPixel(0, 0)).isEqualTo(123);
 assertThat(bitmapReconstructed.getPixel(1, 1)).isEqualTo(456);
 assertThat(bitmapReconstructed.getPixel(2, 2)).isEqualTo(789);
 int[] pixelsReconstructed = new int[width * height];
 bitmapReconstructed.getPixels(pixelsReconstructed, 0, width, 0, 0, width, height);
 assertThat(Arrays.equals(pixelsOriginal, pixelsReconstructed)).isTrue();
}

代码示例来源：origin: stackoverflow.com

public boolean equals(Bitmap bitmap1, Bitmap bitmap2) {
  ByteBuffer buffer1 = ByteBuffer.allocate(bitmap1.getHeight() * bitmap1.getRowBytes());
  bitmap1.copyPixelsToBuffer(buffer1);

  ByteBuffer buffer2 = ByteBuffer.allocate(bitmap2.getHeight() * bitmap2.getRowBytes());
  bitmap2.copyPixelsToBuffer(buffer2);

  return Arrays.equals(buffer1.array(), buffer2.array());
}

代码示例来源：origin: stackoverflow.com

myVideoScreenshotBm.copyPixelsToBuffer(dst);
if(bytesar==null || bmSize > bytesar.length)
  bytesar=new byte[bmSize];

代码示例来源：origin: stackoverflow.com

int inputPixel = 0x336699cc;
int[] pixels = new int[] { inputPixel };
Bitmap bm = Bitmap.createBitmap(pixels, 1, 1, Config.ARGB_8888);
ByteBuffer bb = ByteBuffer.allocate(4);
bm.copyPixelsToBuffer(bb);
Log.i("TAG", "inputPixel = 0x" + Integer.toHexString(inputPixel));
for (int i = 0; i < 4; i++) {
  String byteString = "0x" + Integer.toHexString(bb.array()[i] & 0xff);
  Log.i("TAG", "outputPixel byte " + i + " = " + byteString);
}

代码示例来源：origin: stackoverflow.com

protected long saveBitmap(SQLiteDatabase database, Bitmap bmp)
{
  int size = bmp.getRowBytes() * bmp.getHeight(); 
  ByteBuffer b = ByteBuffer.allocate(size); bmp.copyPixelsToBuffer(b); 
  byte[] bytes = new byte[size];
  b.get(bytes, 0, bytes.length);
  ContentValues cv=new ContentValues();
  cv.put(CHUNK, bytes);
  this.id= database.insert(TABLE, null, cv);
}

代码示例来源：origin: PrivacyApps/document-viewer

public static ByteBufferBitmap get(final Bitmap bmp) {
  if (bmp.getConfig() != Bitmap.Config.ARGB_8888) {
    throw new IllegalArgumentException("Wrong bitmap config: " + bmp.getConfig());
  }
  final ByteBufferBitmap b = ByteBufferManager.getBitmap(bmp.getWidth(), bmp.getHeight());
  bmp.copyPixelsToBuffer(b.pixels);
  return b;
}

代码示例来源：origin: stackoverflow.com

...

Bitmap b = ...
int bytes = b.getByteCount();
ByteBuffer buffer = ByteBuffer.allocate(bytes);
b.copyPixelsToBuffer(buffer); //Move the byte data to the buffer

byte[] data = buffer.array(); //Get the bytes array of the bitmap
YuvImage yuv = new YuvImage(data, ImageFormat.NV21, size.width, size.height, null);

代码示例来源：origin: stackoverflow.com

ByteBuffer copyToBuffer(Bitmap bitmap){
  int size = bitmap.getHeight() * bitmap.getRowBytes();
  ByteBuffer buffer = ByteBuffer.allocateDirect(size);
  bitmap.copyPixelsToBuffer(buffer);
  return buffer;
}

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