diff options
Diffstat (limited to 'src/org/cyanogenmod/wallpapers/photophase/utils/GLESUtil.java')
| -rw-r--r-- | src/org/cyanogenmod/wallpapers/photophase/utils/GLESUtil.java | 115 |
1 files changed, 101 insertions, 14 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/utils/GLESUtil.java b/src/org/cyanogenmod/wallpapers/photophase/utils/GLESUtil.java index 8b34601..1d7c8bc 100644 --- a/src/org/cyanogenmod/wallpapers/photophase/utils/GLESUtil.java +++ b/src/org/cyanogenmod/wallpapers/photophase/utils/GLESUtil.java @@ -22,6 +22,9 @@ import android.graphics.Bitmap; import android.graphics.Color; import android.graphics.Rect; import android.media.effect.Effect; +import android.opengl.ETC1Util; +import android.opengl.ETC1Util.ETC1Texture; +import android.opengl.ETC1; import android.opengl.GLES20; import android.opengl.GLUtils; import android.util.Log; @@ -31,6 +34,9 @@ import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.Reader; +import java.nio.Buffer; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; /** @@ -46,7 +52,10 @@ public final class GLESUtil { public static final String DEBUG_GL_MEMOBJS_NEW_TAG = "MEMOBJS_NEW"; public static final String DEBUG_GL_MEMOBJS_DEL_TAG = "MEMOBJS_DEL"; - private static final Object sSync = new Object(); + private static final Object SYNC = new Object(); + + private static final int MAX_ACEPTABLE_COMPRESSION_TIME = 1000; + private static boolean sDisabledTextureCompression = false; /** * A helper class to deal with OpenGL float colors. @@ -330,10 +339,11 @@ public final class GLESUtil { * @param effect The effect to apply to the image or null if no effect is needed * @param dimen The new dimensions * @param recycle If the bitmap should be recycled + * @param compress Try to compress the bitmap into ETC1 * @return GLESTextureInfo The texture info */ - public static GLESTextureInfo loadTexture( - File file, Rect dimensions, Effect effect, Rect dimen, boolean recycle) { + public static GLESTextureInfo loadTexture(File file, Rect dimensions, Effect effect, + Rect dimen, boolean recycle, boolean compress) { Bitmap bitmap = null; try { // Decode and associate the bitmap (invert the desired dimensions) @@ -344,7 +354,7 @@ public final class GLESUtil { } if (DEBUG) Log.d(TAG, "image: " + file.getAbsolutePath()); - GLESTextureInfo ti = loadTexture(bitmap, effect, dimen); + GLESTextureInfo ti = loadTexture(bitmap, effect, dimen, compress); ti.path = file; return ti; @@ -370,10 +380,11 @@ public final class GLESUtil { * @param effect The effect to apply to the image or null if no effect is needed * @param dimen The new dimensions * @param recycle If the bitmap should be recycled + * @param compress Try to compress the bitmap into ETC1 * @return GLESTextureInfo The texture info */ - public static GLESTextureInfo loadTexture( - Context ctx, int resourceId, Effect effect, Rect dimen, boolean recycle) { + public static GLESTextureInfo loadTexture(Context ctx, int resourceId, Effect effect, + Rect dimen, boolean recycle, boolean compress) { Bitmap bitmap = null; InputStream raw = null; try { @@ -387,7 +398,7 @@ public final class GLESUtil { } if (DEBUG) Log.d(TAG, "resourceId: " + resourceId); - GLESTextureInfo ti = loadTexture(bitmap, effect, dimen); + GLESTextureInfo ti = loadTexture(bitmap, effect, dimen, compress); return ti; } catch (Exception e) { @@ -418,9 +429,11 @@ public final class GLESUtil { * @param bitmap The bitmap reference * @param effect The effect to apply to the image or null if no effect is needed * @param dimen The new dimensions + * @param compress Try to compress the bitmap into ETC1 * @return GLESTextureInfo The texture info */ - public static GLESTextureInfo loadTexture(Bitmap bitmap, Effect effect, Rect dimen) { + public static GLESTextureInfo loadTexture(Bitmap bitmap, Effect effect, Rect dimen, + boolean compress) { // Check that we have a valid image name reference if (bitmap == null) { return new GLESTextureInfo(); @@ -455,18 +468,59 @@ public final class GLESUtil { GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE); GLESUtil.glesCheckError("glTexParameteri"); - // Load the texture - GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0); - if (!GLES20.glIsTexture(textureHandles[0])) { - Log.e(TAG, "Failed to load a valid texture"); - return new GLESTextureInfo(); + // Load the texture. Check weather the device supports ETC1 compressed format + // AOSP ETC1 implementation doesn't support alpha channel + boolean fallback = true; + int bytesPerPixel = bitmap.getRowBytes() / bitmap.getWidth(); + boolean hasAlpha = bitmap.hasAlpha() || (bytesPerPixel < 2 || bytesPerPixel > 3); + if (!sDisabledTextureCompression && compress && ETC1Util.isETC1Supported() && !hasAlpha) { + // Compress the texture + long start = System.currentTimeMillis(); + ETC1Texture texture = createETC1CompressedTextureFromBitmap(bitmap); + if (texture != null) { + try { + long time = System.currentTimeMillis() - start; + if (DEBUG) { + Log.d(TAG, "Compression time: " + time + " ms"); + } + if (time > MAX_ACEPTABLE_COMPRESSION_TIME) { + sDisabledTextureCompression = true; + Log.e(TAG, "Excessive compression time (" + time + " ms). " + + "Disabling compression"); + } + + // Load the compressed texture + int width = texture.getWidth(); + int height = texture.getHeight(); + Buffer data = texture.getData(); + int imageSize = data.remaining(); + GLES20.glCompressedTexImage2D(GLES20.GL_TEXTURE_2D, 0, ETC1.ETC1_RGB8_OES, + width, height, 0, imageSize, data); + GLESUtil.glesCheckError("glCompressedTexImage2D"); + fallback = !GLES20.glIsTexture(textureHandles[0]); + } finally { + texture = null; + } + } + } + if (fallback) { + if (DEBUG) { + Log.d(TAG, "Fallback to uncompressed texture."); + } + + // Fallback to uncompressed texture + GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0); + if (!GLES20.glIsTexture(textureHandles[0])) { + Log.e(TAG, "Failed to load a valid texture"); + return new GLESTextureInfo(); + } } // Has a effect? int handle = textureHandles[0]; if (effect != null) { // Apply the effect (we need a thread-safe call here) - synchronized (sSync) { + synchronized (SYNC) { // No more than 1024 (the minimum supported by all the gles20 devices) int w = Math.min(dimen.width(), 1024); int h = Math.min(dimen.width(), 1024); @@ -553,4 +607,37 @@ public final class GLESUtil { } } + /** + * Method that compress a uncompressed bitmap to an compressed ETC1 texture + * + * @param bitmap The uncompressed bitmap + * @return ETC1Texture The ETC1 compressed texture + */ + private static ETC1Texture createETC1CompressedTextureFromBitmap(Bitmap bitmap) { + int width = bitmap.getWidth(); + int height = bitmap.getHeight(); + int dataSize = bitmap.getRowBytes() * height; + int bytesPerPixel = bitmap.getRowBytes() / width; + int stride = bitmap.getRowBytes(); + + ByteBuffer dataBuffer = ByteBuffer.allocateDirect(dataSize).order(ByteOrder.nativeOrder()); + try { + bitmap.copyPixelsToBuffer(dataBuffer); + dataBuffer.position(0); + + int encodedImageSize = ETC1.getEncodedDataSize(width, height); + ByteBuffer compressedImage = ByteBuffer.allocateDirect(encodedImageSize). + order(ByteOrder.nativeOrder()); + try { + ETC1.encodeImage(dataBuffer, width, height, bytesPerPixel, stride, compressedImage); + return new ETC1Util.ETC1Texture(width, height, compressedImage); + } catch (IllegalArgumentException ex) { + compressedImage = null; + } + } finally { + dataBuffer = null; + } + return null; + } + } |