package com.hw.photomovie.opengl; import android.graphics.Bitmap; import android.graphics.Rect; import android.graphics.RectF; public interface GLESCanvas { public GLId getGLId(); // Tells GLCanvas the size of the underlying GL surface. This should be // called before first drawing and when the size of GL surface is changed. // This is called by GLRoot and should not be called by the clients // who only want to draw on the GLCanvas. Both width and height must be // nonnegative. public abstract void setSize(int width, int height); // Clear the drawing buffers. This should only be used by GLRoot. public abstract void clearBuffer(); public abstract void clearBuffer(float[] argb); // Sets and gets the current alpha, alpha must be in [0, 1]. public abstract void setAlpha(float alpha); public abstract float getAlpha(); // (current alpha) = (current alpha) * alpha public abstract void multiplyAlpha(float alpha); // Change the current transform matrix. public abstract void translate(float x, float y, float z); public abstract void translate(float x, float y); public abstract void scale(float sx, float sy, float sz); public abstract void rotate(float angle, float x, float y, float z); public abstract void multiplyMatrix(float[] matrix, int offset); // Pushes the configuration state (matrix, and alpha) onto // a private stack. public abstract void save(); // Same as saveFreePuzzlePic(), but only saveFreePuzzlePic those specified in saveFlags. public abstract void save(int saveFlags); public static final int SAVE_FLAG_ALL = 0xFFFFFFFF; public static final int SAVE_FLAG_ALPHA = 0x01; public static final int SAVE_FLAG_MATRIX = 0x02; // Pops from the top of the stack as current configuration state (matrix, // alpha, and clip). This call balances a previous call to saveFreePuzzlePic(), and is // used to remove all modifications to the configuration state since the // last saveFreePuzzlePic call. public abstract void restore(); // Draws a line using the specified paint from (x1, y1) to (x2, y2). // (Both end points are included). public abstract void drawLine(float x1, float y1, float x2, float y2, GLPaint paint); // Draws a rectangle using the specified paint from (x1, y1) to (x2, y2). // (Both end points are included). public abstract void drawRect(float x1, float y1, float x2, float y2, GLPaint paint); // Fills the specified rectangle with the specified color. public abstract void fillRect(float x, float y, float width, float height, int color); // Draws a texture to the specified rectangle. public abstract void drawTexture( BasicTexture texture, int x, int y, int width, int height); public abstract void drawMesh(BasicTexture tex, int x, int y, int xyBuffer, int uvBuffer, int indexBuffer, int indexCount); // Draws the source rectangle part of the texture to the target rectangle. public abstract void drawTexture(BasicTexture texture, RectF source, RectF target); // Draw a texture with a specified texture transform. public abstract void drawTexture(BasicTexture texture, float[] mTextureTransform, int x, int y, int w, int h); // Draw two textures to the specified rectangle. The actual texture used is // from * (1 - ratio) + to * ratio // The two textures must have the same size. public abstract void drawMixed(BasicTexture from, int toColor, float ratio, int x, int y, int w, int h); // Draw a region of a texture and a specified color to the specified // rectangle. The actual color used is from * (1 - ratio) + to * ratio. // The region of the texture is defined by parameter "src". The target // rectangle is specified by parameter "target". public abstract void drawMixed(BasicTexture from, int toColor, float ratio, RectF src, RectF target); // Unloads the specified texture from the canvas. The resource allocated // to draw the texture will be released. The specified texture will return // to the unloaded state. This function should be called only from // BasicTexture or its descendant public abstract boolean unloadTexture(BasicTexture texture); // Delete the specified buffer object, similar to unloadTexture. public abstract void deleteBuffer(int bufferId); // Delete the textures and buffers in GL side. This function should only be // called in the GL thread. public abstract void deleteRecycledResources(); // Dump statistics information and clear the counters. For debug only. public abstract void dumpStatisticsAndClear(); public abstract void beginRenderTarget(RawTexture texture); public abstract void endRenderTarget(); /** * Sets texture parameters to use GL_CLAMP_TO_EDGE for both * GL_TEXTURE_WRAP_S and GL_TEXTURE_WRAP_T. Sets texture parameters to be * GL_LINEAR for GL_TEXTURE_MIN_FILTER and GL_TEXTURE_MAG_FILTER. * bindTexture() must be called prior to this. * * @param texture The texture to set parameters on. */ public abstract void setTextureParameters(BasicTexture texture); /** * Initializes the texture to a size by calling texImage2D on it. * * @param texture The texture to initialize the size. * @param format The texture format (e.g. GL_RGBA) * @param type The texture type (e.g. GL_UNSIGNED_BYTE) */ public abstract void initializeTextureSize(BasicTexture texture, int format, int type); /** * Initializes the texture to a size by calling texImage2D on it. * * @param texture The texture to initialize the size. * @param bitmap The bitmap to initialize the bitmap with. */ public abstract void initializeTexture(BasicTexture texture, Bitmap bitmap); /** * Calls glTexSubImage2D to upload a bitmap to the texture. * * @param texture The target texture to write to. * @param xOffset Specifies a texel offset in the x direction within the * texture array. * @param yOffset Specifies a texel offset in the y direction within the * texture array. * @param format The texture format (e.g. GL_RGBA) * @param type The texture type (e.g. GL_UNSIGNED_BYTE) */ public abstract void texSubImage2D(BasicTexture texture, int xOffset, int yOffset, Bitmap bitmap, int format, int type); /** * Generates buffers and uploads the buffer data. * * @param buffer The buffer to upload * @return The buffer ID that was generated. */ public abstract int uploadBuffer(java.nio.FloatBuffer buffer); /** * Generates buffers and uploads the element array buffer data. * * @param buffer The buffer to upload * @return The buffer ID that was generated. */ public abstract int uploadBuffer(java.nio.ByteBuffer buffer); /** * After LightCycle makes GL calls, this method is called to restore the GL * configuration to the one expected by GLCanvas. */ public abstract void recoverFromLightCycle(); /** * Gets the bounds given by x, y, width, and height as well as the internal * matrix state. There is no special handling for non-90-degree rotations. * It only considers the lower-left and upper-right corners as the bounds. * * @param bounds The output bounds to write to. * @param x The left side of the input rectangle. * @param y The bottom of the input rectangle. * @param width The width of the input rectangle. * @param height The height of the input rectangle. */ public abstract void getBounds(Rect bounds, int x, int y, int width, int height); /** * 在调用{@link com.hw.photomovie.filter.MovieFilter}绘制时先调用该函数释放自身的buffer，不然不知道绘到哪儿去了 */ public abstract void unbindArrayBuffer(); /** * 在调用{@link com.hw.photomovie.filter.MovieFilter}绘制后调用该函数重新绑定自身的buffer，不然自己不知道绘到哪儿去了 */ public abstract void rebindArrayBuffer(); }