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 <ui/FramebufferNativeWindow.h>
31#include <ui/GraphicBuffer.h>
32#include "EGLUtils.h"
33
34using namespace android;
35
36static 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
49static 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
61static 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
68bool setupGraphics(int w, int h) {
69    glViewport(0, 0, w, h);
70    checkGlError("glViewport");
71    return true;
72}
73
74int align(int x, int a) {
75    return (x + (a-1)) & (~(a-1));
76}
77
78const int yuvTexWidth = 600;
79const int yuvTexHeight = 480;
80const int yuvTexUsage = GraphicBuffer::USAGE_HW_TEXTURE |
81        GraphicBuffer::USAGE_SW_WRITE_RARELY;
82const int yuvTexFormat = HAL_PIXEL_FORMAT_YV12;
83const int yuvTexOffsetY = 0;
84const int yuvTexStrideY = (yuvTexWidth + 0xf) & ~0xf;
85const int yuvTexOffsetV = yuvTexStrideY * yuvTexHeight;
86const int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf;
87const int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * yuvTexHeight/2;
88const int yuvTexStrideU = yuvTexStrideV;
89const bool yuvTexSameUV = false;
90static sp<GraphicBuffer> yuvTexBuffer;
91static GLuint yuvTex;
92
93bool setupYuvTexSurface(EGLDisplay dpy, EGLContext context) {
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
158void 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
173void 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
224int 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    EGLNativeWindowType window = android_createDisplaySurface();
258    returnValue = EGLUtils::selectConfigForNativeWindow(dpy, s_configAttribs, window, &myConfig);
259    if (returnValue) {
260        printf("EGLUtils::selectConfigForNativeWindow() returned %d", returnValue);
261        return 1;
262    }
263
264    checkEglError("EGLUtils::selectConfigForNativeWindow");
265
266    printf("Chose this configuration:\n");
267    printEGLConfiguration(dpy, myConfig);
268
269    surface = eglCreateWindowSurface(dpy, myConfig, window, NULL);
270    checkEglError("eglCreateWindowSurface");
271    if (surface == EGL_NO_SURFACE) {
272        printf("gelCreateWindowSurface failed.\n");
273        return 1;
274    }
275
276    context = eglCreateContext(dpy, myConfig, EGL_NO_CONTEXT, context_attribs);
277    checkEglError("eglCreateContext");
278    if (context == EGL_NO_CONTEXT) {
279        printf("eglCreateContext failed\n");
280        return 1;
281    }
282    returnValue = eglMakeCurrent(dpy, surface, surface, context);
283    checkEglError("eglMakeCurrent", returnValue);
284    if (returnValue != EGL_TRUE) {
285        return 1;
286    }
287    eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
288    checkEglError("eglQuerySurface");
289    eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
290    checkEglError("eglQuerySurface");
291    GLint dim = w < h ? w : h;
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, context)) {
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