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      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 #include <stdlib.h>
     18 #include <stdio.h>
     19 #include <time.h>
     20 #include <sched.h>
     21 #include <sys/resource.h>
     22 
     23 #include <EGL/egl.h>
     24 #include <EGL/eglext.h>
     25 #include <GLES/gl.h>
     26 #include <GLES/glext.h>
     27 
     28 #include <utils/Timers.h>
     29 
     30 #include <WindowSurface.h>
     31 #include <ui/GraphicBuffer.h>
     32 #include <EGLUtils.h>
     33 
     34 using namespace android;
     35 
     36 static void printGLString(const char *name, GLenum s) {
     37     // fprintf(stderr, "printGLString %s, %d\n", name, s);
     38     const char *v = (const char *) glGetString(s);
     39     // int error = glGetError();
     40     // fprintf(stderr, "glGetError() = %d, result of glGetString = %x\n", error,
     41     //        (unsigned int) v);
     42     // if ((v < (const char*) 0) || (v > (const char*) 0x10000))
     43     //    fprintf(stderr, "GL %s = %s\n", name, v);
     44     // else
     45     //    fprintf(stderr, "GL %s = (null) 0x%08x\n", name, (unsigned int) v);
     46     fprintf(stderr, "GL %s = %s\n", name, v);
     47 }
     48 
     49 static void checkEglError(const char* op, EGLBoolean returnVal = EGL_TRUE) {
     50     if (returnVal != EGL_TRUE) {
     51         fprintf(stderr, "%s() returned %d\n", op, returnVal);
     52     }
     53 
     54     for (EGLint error = eglGetError(); error != EGL_SUCCESS; error
     55             = eglGetError()) {
     56         fprintf(stderr, "after %s() eglError %s (0x%x)\n", op, EGLUtils::strerror(error),
     57                 error);
     58     }
     59 }
     60 
     61 static void checkGlError(const char* op) {
     62     for (GLint error = glGetError(); error; error
     63             = glGetError()) {
     64         fprintf(stderr, "after %s() glError (0x%x)\n", op, error);
     65     }
     66 }
     67 
     68 bool setupGraphics(int w, int h) {
     69     glViewport(0, 0, w, h);
     70     checkGlError("glViewport");
     71     return true;
     72 }
     73 
     74 int align(int x, int a) {
     75     return (x + (a-1)) & (~(a-1));
     76 }
     77 
     78 const int yuvTexWidth = 600;
     79 const int yuvTexHeight = 480;
     80 const int yuvTexUsage = GraphicBuffer::USAGE_HW_TEXTURE |
     81         GraphicBuffer::USAGE_SW_WRITE_RARELY;
     82 const int yuvTexFormat = HAL_PIXEL_FORMAT_YV12;
     83 const int yuvTexOffsetY = 0;
     84 const int yuvTexStrideY = (yuvTexWidth + 0xf) & ~0xf;
     85 const int yuvTexOffsetV = yuvTexStrideY * yuvTexHeight;
     86 const int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf;
     87 const int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * yuvTexHeight/2;
     88 const int yuvTexStrideU = yuvTexStrideV;
     89 const bool yuvTexSameUV = false;
     90 static sp<GraphicBuffer> yuvTexBuffer;
     91 static GLuint yuvTex;
     92 
     93 static bool setupYuvTexSurface(EGLDisplay dpy) {
     94     int blockWidth = yuvTexWidth > 16 ? yuvTexWidth / 16 : 1;
     95     int blockHeight = yuvTexHeight > 16 ? yuvTexHeight / 16 : 1;
     96     yuvTexBuffer = new GraphicBuffer(yuvTexWidth, yuvTexHeight, yuvTexFormat,
     97             yuvTexUsage);
     98     char* buf = NULL;
     99     status_t err = yuvTexBuffer->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&buf));
    100     if (err != 0) {
    101         fprintf(stderr, "yuvTexBuffer->lock(...) failed: %d\n", err);
    102         return false;
    103     }
    104     for (int x = 0; x < yuvTexWidth; x++) {
    105         for (int y = 0; y < yuvTexHeight; y++) {
    106             int parityX = (x / blockWidth) & 1;
    107             int parityY = (y / blockHeight) & 1;
    108             unsigned char intensity = (parityX ^ parityY) ? 63 : 191;
    109             buf[yuvTexOffsetY + (y * yuvTexStrideY) + x] = intensity;
    110             if (x < yuvTexWidth / 2 && y < yuvTexHeight / 2) {
    111                 buf[yuvTexOffsetU + (y * yuvTexStrideU) + x] = intensity;
    112                 if (yuvTexSameUV) {
    113                     buf[yuvTexOffsetV + (y * yuvTexStrideV) + x] = intensity;
    114                 } else if (x < yuvTexWidth / 4 && y < yuvTexHeight / 4) {
    115                     buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 0] =
    116                     buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 1] =
    117                     buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 0] =
    118                     buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 1] = intensity;
    119                 }
    120             }
    121         }
    122     }
    123 
    124     err = yuvTexBuffer->unlock();
    125     if (err != 0) {
    126         fprintf(stderr, "yuvTexBuffer->unlock() failed: %d\n", err);
    127         return false;
    128     }
    129 
    130     EGLClientBuffer clientBuffer = (EGLClientBuffer)yuvTexBuffer->getNativeBuffer();
    131     EGLImageKHR img = eglCreateImageKHR(dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
    132             clientBuffer, 0);
    133     checkEglError("eglCreateImageKHR");
    134     if (img == EGL_NO_IMAGE_KHR) {
    135         return false;
    136     }
    137 
    138     glGenTextures(1, &yuvTex);
    139     checkGlError("glGenTextures");
    140     glBindTexture(GL_TEXTURE_EXTERNAL_OES, yuvTex);
    141     checkGlError("glBindTexture");
    142     glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, (GLeglImageOES)img);
    143     checkGlError("glEGLImageTargetTexture2DOES");
    144     glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    145     checkGlError("glTexParameteri");
    146     glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    147     checkGlError("glTexParameteri");
    148     glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
    149     checkGlError("glTexEnvx");
    150 
    151     GLint crop[4] = { 0, 0, yuvTexWidth, yuvTexHeight };
    152     glTexParameteriv(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_CROP_RECT_OES, crop);
    153     checkGlError("glTexParameteriv");
    154 
    155     return true;
    156 }
    157 
    158 void renderFrame(int w, int h) {
    159     glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
    160     checkGlError("glClearColor");
    161     glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
    162     checkGlError("glClear");
    163 
    164     glBindTexture(GL_TEXTURE_EXTERNAL_OES, yuvTex);
    165     checkGlError("glBindTexture");
    166     glEnable(GL_TEXTURE_EXTERNAL_OES);
    167     checkGlError("glEnable");
    168 
    169     glDrawTexiOES(0, 0, 0, w, h);
    170     checkGlError("glDrawTexiOES");
    171 }
    172 
    173 void printEGLConfiguration(EGLDisplay dpy, EGLConfig config) {
    174 
    175 #define X(VAL) {VAL, #VAL}
    176     struct {EGLint attribute; const char* name;} names[] = {
    177     X(EGL_BUFFER_SIZE),
    178     X(EGL_ALPHA_SIZE),
    179     X(EGL_BLUE_SIZE),
    180     X(EGL_GREEN_SIZE),
    181     X(EGL_RED_SIZE),
    182     X(EGL_DEPTH_SIZE),
    183     X(EGL_STENCIL_SIZE),
    184     X(EGL_CONFIG_CAVEAT),
    185     X(EGL_CONFIG_ID),
    186     X(EGL_LEVEL),
    187     X(EGL_MAX_PBUFFER_HEIGHT),
    188     X(EGL_MAX_PBUFFER_PIXELS),
    189     X(EGL_MAX_PBUFFER_WIDTH),
    190     X(EGL_NATIVE_RENDERABLE),
    191     X(EGL_NATIVE_VISUAL_ID),
    192     X(EGL_NATIVE_VISUAL_TYPE),
    193     X(EGL_SAMPLES),
    194     X(EGL_SAMPLE_BUFFERS),
    195     X(EGL_SURFACE_TYPE),
    196     X(EGL_TRANSPARENT_TYPE),
    197     X(EGL_TRANSPARENT_RED_VALUE),
    198     X(EGL_TRANSPARENT_GREEN_VALUE),
    199     X(EGL_TRANSPARENT_BLUE_VALUE),
    200     X(EGL_BIND_TO_TEXTURE_RGB),
    201     X(EGL_BIND_TO_TEXTURE_RGBA),
    202     X(EGL_MIN_SWAP_INTERVAL),
    203     X(EGL_MAX_SWAP_INTERVAL),
    204     X(EGL_LUMINANCE_SIZE),
    205     X(EGL_ALPHA_MASK_SIZE),
    206     X(EGL_COLOR_BUFFER_TYPE),
    207     X(EGL_RENDERABLE_TYPE),
    208     X(EGL_CONFORMANT),
    209    };
    210 #undef X
    211 
    212     for (size_t j = 0; j < sizeof(names) / sizeof(names[0]); j++) {
    213         EGLint value = -1;
    214         EGLint returnVal = eglGetConfigAttrib(dpy, config, names[j].attribute, &value);
    215         EGLint error = eglGetError();
    216         if (returnVal && error == EGL_SUCCESS) {
    217             printf(" %s: ", names[j].name);
    218             printf("%d (0x%x)", value, value);
    219         }
    220     }
    221     printf("\n");
    222 }
    223 
    224 int main(int /*argc*/, char** /*argv*/) {
    225     EGLBoolean returnValue;
    226     EGLConfig myConfig = {0};
    227 
    228     EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 1, EGL_NONE };
    229     EGLint s_configAttribs[] = {
    230             EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
    231             EGL_RENDERABLE_TYPE, EGL_OPENGL_ES_BIT,
    232             EGL_NONE };
    233     EGLint majorVersion;
    234     EGLint minorVersion;
    235     EGLContext context;
    236     EGLSurface surface;
    237     EGLint w, h;
    238 
    239     EGLDisplay dpy;
    240 
    241     checkEglError("<init>");
    242     dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
    243     checkEglError("eglGetDisplay");
    244     if (dpy == EGL_NO_DISPLAY) {
    245         printf("eglGetDisplay returned EGL_NO_DISPLAY.\n");
    246         return 0;
    247     }
    248 
    249     returnValue = eglInitialize(dpy, &majorVersion, &minorVersion);
    250     checkEglError("eglInitialize", returnValue);
    251     fprintf(stderr, "EGL version %d.%d\n", majorVersion, minorVersion);
    252     if (returnValue != EGL_TRUE) {
    253         printf("eglInitialize failed\n");
    254         return 0;
    255     }
    256 
    257     WindowSurface windowSurface;
    258     EGLNativeWindowType window = windowSurface.getSurface();
    259     returnValue = EGLUtils::selectConfigForNativeWindow(dpy, s_configAttribs, window, &myConfig);
    260     if (returnValue) {
    261         printf("EGLUtils::selectConfigForNativeWindow() returned %d", returnValue);
    262         return 1;
    263     }
    264 
    265     checkEglError("EGLUtils::selectConfigForNativeWindow");
    266 
    267     printf("Chose this configuration:\n");
    268     printEGLConfiguration(dpy, myConfig);
    269 
    270     surface = eglCreateWindowSurface(dpy, myConfig, window, NULL);
    271     checkEglError("eglCreateWindowSurface");
    272     if (surface == EGL_NO_SURFACE) {
    273         printf("gelCreateWindowSurface failed.\n");
    274         return 1;
    275     }
    276 
    277     context = eglCreateContext(dpy, myConfig, EGL_NO_CONTEXT, context_attribs);
    278     checkEglError("eglCreateContext");
    279     if (context == EGL_NO_CONTEXT) {
    280         printf("eglCreateContext failed\n");
    281         return 1;
    282     }
    283     returnValue = eglMakeCurrent(dpy, surface, surface, context);
    284     checkEglError("eglMakeCurrent", returnValue);
    285     if (returnValue != EGL_TRUE) {
    286         return 1;
    287     }
    288     eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
    289     checkEglError("eglQuerySurface");
    290     eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
    291     checkEglError("eglQuerySurface");
    292 
    293     fprintf(stderr, "Window dimensions: %d x %d\n", w, h);
    294 
    295     printGLString("Version", GL_VERSION);
    296     printGLString("Vendor", GL_VENDOR);
    297     printGLString("Renderer", GL_RENDERER);
    298     printGLString("Extensions", GL_EXTENSIONS);
    299 
    300     if(!setupYuvTexSurface(dpy)) {
    301         fprintf(stderr, "Could not set up texture surface.\n");
    302         return 1;
    303     }
    304 
    305     if(!setupGraphics(w, h)) {
    306         fprintf(stderr, "Could not set up graphics.\n");
    307         return 1;
    308     }
    309 
    310     for (;;) {
    311         static int dir = -1;
    312 
    313         renderFrame(w, h);
    314         eglSwapBuffers(dpy, surface);
    315         checkEglError("eglSwapBuffers");
    316 
    317         if (w <= 10 || h <= 10)
    318         {
    319             dir = -dir;
    320         }
    321 
    322         if (w >= 1300 || h >= 900)
    323         {
    324             dir = -dir;
    325         }
    326 
    327 
    328         w += dir;
    329         h += dir;
    330     }
    331 
    332     return 0;
    333 }
    334