Examples with BitmapFactory android.graphics.BitmapFactory used on opensource projects

Example 1 with BitmapFactory

use of android.graphics.BitmapFactory in project platform_frameworks_base by android.

the class CodecTest method getThumbnail.

//Test for mediaMeta Data Thumbnail
public static boolean getThumbnail(String filePath, String goldenPath) {
    Log.v(TAG, "getThumbnail - " + filePath);
    int goldenHeight = 0;
    int goldenWidth = 0;
    int outputWidth = 0;
    int outputHeight = 0;
    //This test is only for the short media file
    try {
        BitmapFactory mBitmapFactory = new BitmapFactory();
        MediaMetadataRetriever mMediaMetadataRetriever = new MediaMetadataRetriever();
        try {
            mMediaMetadataRetriever.setDataSource(filePath);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        Bitmap outThumbnail = mMediaMetadataRetriever.getFrameAtTime(-1);
        //Verify the thumbnail
        Bitmap goldenBitmap = mBitmapFactory.decodeFile(goldenPath);
        outputWidth = outThumbnail.getWidth();
        outputHeight = outThumbnail.getHeight();
        goldenHeight = goldenBitmap.getHeight();
        goldenWidth = goldenBitmap.getWidth();
        //check the image dimension
        if ((outputWidth != goldenWidth) || (outputHeight != goldenHeight))
            return false;
        // Check half line of pixel
        int x = goldenHeight / 2;
        for (int j = 1; j < goldenWidth / 2; j++) {
            if (goldenBitmap.getPixel(x, j) != outThumbnail.getPixel(x, j)) {
                Log.v(TAG, "pixel = " + goldenBitmap.getPixel(x, j));
                return false;
            }
        }
    } catch (Exception e) {
        Log.v(TAG, e.toString());
        return false;
    }
    return true;
}

Example 2 with BitmapFactory

use of android.graphics.BitmapFactory in project Lazy by l123456789jy.

the class BitmapUtil method safeDecodeStream.

/**
     * A safer decodeStream method
     * rather than the one of {@link BitmapFactory}
     * which will be easy to get OutOfMemory Exception
     * while loading a big image file.
     *
     * @param uri 压缩相册返回的照片
     * @return
     * @throws FileNotFoundException
     */
public static Bitmap safeDecodeStream(Uri uri, int targetWidth, int targetHeight, Context mContext) throws FileNotFoundException {
    BitmapFactory.Options options = new BitmapFactory.Options();
    android.content.ContentResolver resolver = mContext.getContentResolver();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeStream(new BufferedInputStream(resolver.openInputStream(uri), 16 * 1024), null, options);
    // 得到图片的宽度、高度；
    float imgWidth = options.outWidth;
    float imgHeight = options.outHeight;
    // 分别计算图片宽度、高度与目标宽度、高度的比例；取大于等于该比例的最小整数；
    int widthRatio = (int) Math.ceil(imgWidth / (float) targetWidth);
    int heightRatio = (int) Math.ceil(imgHeight / (float) targetHeight);
    options.inSampleSize = 1;
    if (widthRatio > 1 || widthRatio > 1) {
        if (widthRatio > heightRatio) {
            options.inSampleSize = widthRatio;
        } else {
            options.inSampleSize = heightRatio;
        }
    }
    // 设置好缩放比例后，加载图片进内容；
    options.inJustDecodeBounds = false;
    return BitmapFactory.decodeStream(new BufferedInputStream(resolver.openInputStream(uri), 16 * 1024), null, options);
}

Example 3 with BitmapFactory

use of android.graphics.BitmapFactory in project android_frameworks_base by DirtyUnicorns.

the class CodecTest method getThumbnail.

//Test for mediaMeta Data Thumbnail
public static boolean getThumbnail(String filePath, String goldenPath) {
    Log.v(TAG, "getThumbnail - " + filePath);
    int goldenHeight = 0;
    int goldenWidth = 0;
    int outputWidth = 0;
    int outputHeight = 0;
    //This test is only for the short media file
    try {
        BitmapFactory mBitmapFactory = new BitmapFactory();
        MediaMetadataRetriever mMediaMetadataRetriever = new MediaMetadataRetriever();
        try {
            mMediaMetadataRetriever.setDataSource(filePath);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        Bitmap outThumbnail = mMediaMetadataRetriever.getFrameAtTime(-1);
        //Verify the thumbnail
        Bitmap goldenBitmap = mBitmapFactory.decodeFile(goldenPath);
        outputWidth = outThumbnail.getWidth();
        outputHeight = outThumbnail.getHeight();
        goldenHeight = goldenBitmap.getHeight();
        goldenWidth = goldenBitmap.getWidth();
        //check the image dimension
        if ((outputWidth != goldenWidth) || (outputHeight != goldenHeight))
            return false;
        // Check half line of pixel
        int x = goldenHeight / 2;
        for (int j = 1; j < goldenWidth / 2; j++) {
            if (goldenBitmap.getPixel(x, j) != outThumbnail.getPixel(x, j)) {
                Log.v(TAG, "pixel = " + goldenBitmap.getPixel(x, j));
                return false;
            }
        }
    } catch (Exception e) {
        Log.v(TAG, e.toString());
        return false;
    }
    return true;
}

Example 4 with BitmapFactory

use of android.graphics.BitmapFactory in project android_frameworks_base by ParanoidAndroid.

the class CodecTest method getThumbnail.

//Test for mediaMeta Data Thumbnail
public static boolean getThumbnail(String filePath, String goldenPath) {
    Log.v(TAG, "getThumbnail - " + filePath);
    int goldenHeight = 0;
    int goldenWidth = 0;
    int outputWidth = 0;
    int outputHeight = 0;
    //This test is only for the short media file
    try {
        BitmapFactory mBitmapFactory = new BitmapFactory();
        MediaMetadataRetriever mMediaMetadataRetriever = new MediaMetadataRetriever();
        try {
            mMediaMetadataRetriever.setDataSource(filePath);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        Bitmap outThumbnail = mMediaMetadataRetriever.getFrameAtTime(-1);
        //Verify the thumbnail 
        Bitmap goldenBitmap = mBitmapFactory.decodeFile(goldenPath);
        outputWidth = outThumbnail.getWidth();
        outputHeight = outThumbnail.getHeight();
        goldenHeight = goldenBitmap.getHeight();
        goldenWidth = goldenBitmap.getWidth();
        //check the image dimension
        if ((outputWidth != goldenWidth) || (outputHeight != goldenHeight))
            return false;
        // Check half line of pixel
        int x = goldenHeight / 2;
        for (int j = 1; j < goldenWidth / 2; j++) {
            if (goldenBitmap.getPixel(x, j) != outThumbnail.getPixel(x, j)) {
                Log.v(TAG, "pixel = " + goldenBitmap.getPixel(x, j));
                return false;
            }
        }
    } catch (Exception e) {
        Log.v(TAG, e.toString());
        return false;
    }
    return true;
}

Example 5 with BitmapFactory

use of android.graphics.BitmapFactory in project android-gltron by Chluverman.

the class GLTexture method loadTexture.

// Will load a texture out of a drawable resource file, and return an OpenGL texture ID:
private void loadTexture(GL10 gl, Context context, int resource) {
    // In which ID will we be storing this texture?
    gl.glGenTextures(1, _texID, 0);
    // We need to flip the textures vertically:
    Matrix flip = new Matrix();
    flip.postScale(1f, -1f);
    // This will tell the BitmapFactory to not scale based on the device's pixel density:
    // (Thanks to Matthew Marshall for this bit)
    BitmapFactory.Options opts = new BitmapFactory.Options();
    opts.inScaled = false;
    // Load up, and flip the texture:
    Bitmap temp = BitmapFactory.decodeResource(context.getResources(), resource, opts);
    Bitmap bmp = Bitmap.createBitmap(temp, 0, 0, temp.getWidth(), temp.getHeight(), flip, true);
    temp.recycle();
    gl.glBindTexture(GL10.GL_TEXTURE_2D, _texID[0]);
    // Set all of our texture parameters:
    if (boGenMipMap) {
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR_MIPMAP_NEAREST);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR_MIPMAP_NEAREST);
    } else {
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
    }
    gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, WrapS);
    gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, WrapT);
    DebugType = GLUtils.getInternalFormat(bmp);
    // Generate, and load up all of the mipmaps:
    if (boGenMipMap) {
        for (int level = 0, height = bmp.getHeight(), width = bmp.getWidth(); true; level++) {
            // Push the bitmap onto the GPU:
            GLUtils.texImage2D(GL10.GL_TEXTURE_2D, level, bmp, 0);
            // We need to stop when the texture is 1x1:
            if (height == 1 && width == 1)
                break;
            // Resize, and let's go again:
            width >>= 1;
            height >>= 1;
            if (width < 1)
                width = 1;
            if (height < 1)
                height = 1;
            Bitmap bmp2 = Bitmap.createScaledBitmap(bmp, width, height, true);
            bmp.recycle();
            bmp = bmp2;
        }
    } else {
        GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bmp, 0);
    }
    bmp.recycle();
}