Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.gallery3d.ui; |
| 18 | |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 19 | import android.graphics.Bitmap; |
| 20 | import android.graphics.Bitmap.Config; |
| 21 | import android.opengl.GLUtils; |
| 22 | |
Owen Lin | 73a04ff | 2012-03-14 17:27:24 +0800 | [diff] [blame] | 23 | import com.android.gallery3d.common.Utils; |
| 24 | |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 25 | import java.util.HashMap; |
Owen Lin | 73a04ff | 2012-03-14 17:27:24 +0800 | [diff] [blame] | 26 | |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 27 | import javax.microedition.khronos.opengles.GL11; |
| 28 | import javax.microedition.khronos.opengles.GL11Ext; |
| 29 | |
| 30 | // UploadedTextures use a Bitmap for the content of the texture. |
| 31 | // |
| 32 | // Subclasses should implement onGetBitmap() to provide the Bitmap and |
| 33 | // implement onFreeBitmap(mBitmap) which will be called when the Bitmap |
| 34 | // is not needed anymore. |
| 35 | // |
| 36 | // isContentValid() is meaningful only when the isLoaded() returns true. |
| 37 | // It means whether the content needs to be updated. |
| 38 | // |
| 39 | // The user of this class should call recycle() when the texture is not |
| 40 | // needed anymore. |
| 41 | // |
| 42 | // By default an UploadedTexture is opaque (so it can be drawn faster without |
| 43 | // blending). The user or subclass can override it using setOpaque(). |
| 44 | abstract class UploadedTexture extends BasicTexture { |
| 45 | |
| 46 | // To prevent keeping allocation the borders, we store those used borders here. |
| 47 | // Since the length will be power of two, it won't use too much memory. |
| 48 | private static HashMap<BorderKey, Bitmap> sBorderLines = |
| 49 | new HashMap<BorderKey, Bitmap>(); |
| 50 | private static BorderKey sBorderKey = new BorderKey(); |
| 51 | |
| 52 | @SuppressWarnings("unused") |
| 53 | private static final String TAG = "Texture"; |
| 54 | private boolean mContentValid = true; |
| 55 | private boolean mOpaque = true; |
| 56 | private boolean mThrottled = false; |
| 57 | private static int sUploadedCount; |
| 58 | private static final int UPLOAD_LIMIT = 100; |
| 59 | |
| 60 | protected Bitmap mBitmap; |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 61 | private int mBorder; |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 62 | |
| 63 | protected UploadedTexture() { |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 64 | this(false); |
| 65 | } |
| 66 | |
| 67 | protected UploadedTexture(boolean hasBorder) { |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 68 | super(null, 0, STATE_UNLOADED); |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 69 | if (hasBorder) { |
| 70 | setBorder(true); |
| 71 | mBorder = 1; |
| 72 | } |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | private static class BorderKey implements Cloneable { |
| 76 | public boolean vertical; |
| 77 | public Config config; |
| 78 | public int length; |
| 79 | |
| 80 | @Override |
| 81 | public int hashCode() { |
| 82 | int x = config.hashCode() ^ length; |
| 83 | return vertical ? x : -x; |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public boolean equals(Object object) { |
| 88 | if (!(object instanceof BorderKey)) return false; |
| 89 | BorderKey o = (BorderKey) object; |
| 90 | return vertical == o.vertical |
| 91 | && config == o.config && length == o.length; |
| 92 | } |
| 93 | |
| 94 | @Override |
| 95 | public BorderKey clone() { |
| 96 | try { |
| 97 | return (BorderKey) super.clone(); |
| 98 | } catch (CloneNotSupportedException e) { |
| 99 | throw new AssertionError(e); |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | protected void setThrottled(boolean throttled) { |
| 105 | mThrottled = throttled; |
| 106 | } |
| 107 | |
| 108 | private static Bitmap getBorderLine( |
| 109 | boolean vertical, Config config, int length) { |
| 110 | BorderKey key = sBorderKey; |
| 111 | key.vertical = vertical; |
| 112 | key.config = config; |
| 113 | key.length = length; |
| 114 | Bitmap bitmap = sBorderLines.get(key); |
| 115 | if (bitmap == null) { |
| 116 | bitmap = vertical |
| 117 | ? Bitmap.createBitmap(1, length, config) |
| 118 | : Bitmap.createBitmap(length, 1, config); |
| 119 | sBorderLines.put(key.clone(), bitmap); |
| 120 | } |
| 121 | return bitmap; |
| 122 | } |
| 123 | |
| 124 | private Bitmap getBitmap() { |
| 125 | if (mBitmap == null) { |
| 126 | mBitmap = onGetBitmap(); |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 127 | int w = mBitmap.getWidth() + mBorder * 2; |
| 128 | int h = mBitmap.getHeight() + mBorder * 2; |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 129 | if (mWidth == UNSPECIFIED) { |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 130 | setSize(w, h); |
| 131 | } else if (mWidth != w || mHeight != h) { |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 132 | throw new IllegalStateException(String.format( |
| 133 | "cannot change size: this = %s, orig = %sx%s, new = %sx%s", |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 134 | toString(), mWidth, mHeight, w, h)); |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 135 | } |
| 136 | } |
| 137 | return mBitmap; |
| 138 | } |
| 139 | |
| 140 | private void freeBitmap() { |
| 141 | Utils.assertTrue(mBitmap != null); |
| 142 | onFreeBitmap(mBitmap); |
| 143 | mBitmap = null; |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public int getWidth() { |
| 148 | if (mWidth == UNSPECIFIED) getBitmap(); |
| 149 | return mWidth; |
| 150 | } |
| 151 | |
| 152 | @Override |
| 153 | public int getHeight() { |
| 154 | if (mWidth == UNSPECIFIED) getBitmap(); |
| 155 | return mHeight; |
| 156 | } |
| 157 | |
| 158 | protected abstract Bitmap onGetBitmap(); |
| 159 | |
| 160 | protected abstract void onFreeBitmap(Bitmap bitmap); |
| 161 | |
| 162 | protected void invalidateContent() { |
| 163 | if (mBitmap != null) freeBitmap(); |
| 164 | mContentValid = false; |
Chih-Chung Chang | 4a01c6e | 2012-03-21 16:19:21 +0800 | [diff] [blame] | 165 | mWidth = UNSPECIFIED; |
| 166 | mHeight = UNSPECIFIED; |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Whether the content on GPU is valid. |
| 171 | */ |
| 172 | public boolean isContentValid(GLCanvas canvas) { |
| 173 | return isLoaded(canvas) && mContentValid; |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Updates the content on GPU's memory. |
| 178 | * @param canvas |
| 179 | */ |
| 180 | public void updateContent(GLCanvas canvas) { |
| 181 | if (!isLoaded(canvas)) { |
| 182 | if (mThrottled && ++sUploadedCount > UPLOAD_LIMIT) { |
| 183 | return; |
| 184 | } |
| 185 | uploadToCanvas(canvas); |
| 186 | } else if (!mContentValid) { |
| 187 | Bitmap bitmap = getBitmap(); |
| 188 | int format = GLUtils.getInternalFormat(bitmap); |
| 189 | int type = GLUtils.getType(bitmap); |
| 190 | canvas.getGLInstance().glBindTexture(GL11.GL_TEXTURE_2D, mId); |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 191 | GLUtils.texSubImage2D(GL11.GL_TEXTURE_2D, 0, mBorder, mBorder, |
| 192 | bitmap, format, type); |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 193 | freeBitmap(); |
| 194 | mContentValid = true; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | public static void resetUploadLimit() { |
| 199 | sUploadedCount = 0; |
| 200 | } |
| 201 | |
| 202 | public static boolean uploadLimitReached() { |
| 203 | return sUploadedCount > UPLOAD_LIMIT; |
| 204 | } |
| 205 | |
| 206 | static int[] sTextureId = new int[1]; |
| 207 | static float[] sCropRect = new float[4]; |
| 208 | |
| 209 | private void uploadToCanvas(GLCanvas canvas) { |
| 210 | GL11 gl = canvas.getGLInstance(); |
| 211 | |
| 212 | Bitmap bitmap = getBitmap(); |
| 213 | if (bitmap != null) { |
| 214 | try { |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 215 | int bWidth = bitmap.getWidth(); |
| 216 | int bHeight = bitmap.getHeight(); |
| 217 | int width = bWidth + mBorder * 2; |
| 218 | int height = bHeight + mBorder * 2; |
| 219 | int texWidth = getTextureWidth(); |
| 220 | int texHeight = getTextureHeight(); |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 221 | // Define a vertically flipped crop rectangle for |
| 222 | // OES_draw_texture. |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 223 | // The four values in sCropRect are: left, bottom, width, and |
| 224 | // height. Negative value of width or height means flip. |
| 225 | sCropRect[0] = mBorder; |
| 226 | sCropRect[1] = mBorder + bHeight; |
| 227 | sCropRect[2] = bWidth; |
| 228 | sCropRect[3] = -bHeight; |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 229 | |
| 230 | // Upload the bitmap to a new texture. |
| 231 | gl.glGenTextures(1, sTextureId, 0); |
| 232 | gl.glBindTexture(GL11.GL_TEXTURE_2D, sTextureId[0]); |
| 233 | gl.glTexParameterfv(GL11.GL_TEXTURE_2D, |
| 234 | GL11Ext.GL_TEXTURE_CROP_RECT_OES, sCropRect, 0); |
| 235 | gl.glTexParameteri(GL11.GL_TEXTURE_2D, |
| 236 | GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP_TO_EDGE); |
| 237 | gl.glTexParameteri(GL11.GL_TEXTURE_2D, |
| 238 | GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP_TO_EDGE); |
| 239 | gl.glTexParameterf(GL11.GL_TEXTURE_2D, |
| 240 | GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR); |
| 241 | gl.glTexParameterf(GL11.GL_TEXTURE_2D, |
| 242 | GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR); |
| 243 | |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 244 | if (bWidth == texWidth && bHeight == texHeight) { |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 245 | GLUtils.texImage2D(GL11.GL_TEXTURE_2D, 0, bitmap, 0); |
| 246 | } else { |
| 247 | int format = GLUtils.getInternalFormat(bitmap); |
| 248 | int type = GLUtils.getType(bitmap); |
| 249 | Config config = bitmap.getConfig(); |
| 250 | |
| 251 | gl.glTexImage2D(GL11.GL_TEXTURE_2D, 0, format, |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 252 | texWidth, texHeight, 0, format, type, null); |
| 253 | GLUtils.texSubImage2D(GL11.GL_TEXTURE_2D, 0, |
| 254 | mBorder, mBorder, bitmap, format, type); |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 255 | |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 256 | if (mBorder > 0) { |
| 257 | // Left border |
| 258 | Bitmap line = getBorderLine(true, config, texHeight); |
| 259 | GLUtils.texSubImage2D(GL11.GL_TEXTURE_2D, 0, |
| 260 | 0, 0, line, format, type); |
| 261 | |
| 262 | // Top border |
| 263 | line = getBorderLine(false, config, texWidth); |
| 264 | GLUtils.texSubImage2D(GL11.GL_TEXTURE_2D, 0, |
| 265 | 0, 0, line, format, type); |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 266 | } |
| 267 | |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 268 | // Right border |
| 269 | if (mBorder + bWidth < texWidth) { |
| 270 | Bitmap line = getBorderLine(true, config, texHeight); |
| 271 | GLUtils.texSubImage2D(GL11.GL_TEXTURE_2D, 0, |
| 272 | mBorder + bWidth, 0, line, format, type); |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 273 | } |
| 274 | |
Chih-Chung Chang | e3312ff | 2011-09-22 14:55:32 +0800 | [diff] [blame] | 275 | // Bottom border |
| 276 | if (mBorder + bHeight < texHeight) { |
| 277 | Bitmap line = getBorderLine(false, config, texWidth); |
| 278 | GLUtils.texSubImage2D(GL11.GL_TEXTURE_2D, 0, |
| 279 | 0, mBorder + bHeight, line, format, type); |
| 280 | } |
Owen Lin | a2fba68 | 2011-08-17 22:07:43 +0800 | [diff] [blame] | 281 | } |
| 282 | } finally { |
| 283 | freeBitmap(); |
| 284 | } |
| 285 | // Update texture state. |
| 286 | setAssociatedCanvas(canvas); |
| 287 | mId = sTextureId[0]; |
| 288 | mState = UploadedTexture.STATE_LOADED; |
| 289 | mContentValid = true; |
| 290 | } else { |
| 291 | mState = STATE_ERROR; |
| 292 | throw new RuntimeException("Texture load fail, no bitmap"); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | @Override |
| 297 | protected boolean onBind(GLCanvas canvas) { |
| 298 | updateContent(canvas); |
| 299 | return isContentValid(canvas); |
| 300 | } |
| 301 | |
| 302 | public void setOpaque(boolean isOpaque) { |
| 303 | mOpaque = isOpaque; |
| 304 | } |
| 305 | |
| 306 | public boolean isOpaque() { |
| 307 | return mOpaque; |
| 308 | } |
| 309 | |
| 310 | @Override |
| 311 | public void recycle() { |
| 312 | super.recycle(); |
| 313 | if (mBitmap != null) freeBitmap(); |
| 314 | } |
| 315 | } |