/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sched.h>
#include <sys/resource.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <utils/Timers.h>
#include <WindowSurface.h>
#include <ui/GraphicBuffer.h>
#include <EGLUtils.h>
using namespace android;
static void printGLString(const char *name, GLenum s) {
// fprintf(stderr, "printGLString %s, %d\n", name, s);
const char *v = (const char *) glGetString(s);
// int error = glGetError();
// fprintf(stderr, "glGetError() = %d, result of glGetString = %x\n", error,
// (unsigned int) v);
// if ((v < (const char*) 0) || (v > (const char*) 0x10000))
// fprintf(stderr, "GL %s = %s\n", name, v);
// else
// fprintf(stderr, "GL %s = (null) 0x%08x\n", name, (unsigned int) v);
fprintf(stderr, "GL %s = %s\n", name, v);
}
static void checkEglError(const char* op, EGLBoolean returnVal = EGL_TRUE) {
if (returnVal != EGL_TRUE) {
fprintf(stderr, "%s() returned %d\n", op, returnVal);
}
for (EGLint error = eglGetError(); error != EGL_SUCCESS; error
= eglGetError()) {
fprintf(stderr, "after %s() eglError %s (0x%x)\n", op, EGLUtils::strerror(error),
error);
}
}
static void checkGlError(const char* op) {
for (GLint error = glGetError(); error; error
= glGetError()) {
fprintf(stderr, "after %s() glError (0x%x)\n", op, error);
}
}
static const char gVertexShader[] = "attribute vec4 vPosition;\n"
"varying vec2 yuvTexCoords;\n"
"void main() {\n"
" yuvTexCoords = vPosition.xy + vec2(0.5, 0.5);\n"
" gl_Position = vPosition;\n"
"}\n";
static const char gFragmentShader[] = "#extension GL_OES_EGL_image_external : require\n"
"precision mediump float;\n"
"uniform samplerExternalOES yuvTexSampler;\n"
"varying vec2 yuvTexCoords;\n"
"void main() {\n"
" gl_FragColor = texture2D(yuvTexSampler, yuvTexCoords);\n"
"}\n";
GLuint loadShader(GLenum shaderType, const char* pSource) {
GLuint shader = glCreateShader(shaderType);
if (shader) {
glShaderSource(shader, 1, &pSource, NULL);
glCompileShader(shader);
GLint compiled = 0;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
if (!compiled) {
GLint infoLen = 0;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen);
if (infoLen) {
char* buf = (char*) malloc(infoLen);
if (buf) {
glGetShaderInfoLog(shader, infoLen, NULL, buf);
fprintf(stderr, "Could not compile shader %d:\n%s\n",
shaderType, buf);
free(buf);
}
} else {
fprintf(stderr, "Guessing at GL_INFO_LOG_LENGTH size\n");
char* buf = (char*) malloc(0x1000);
if (buf) {
glGetShaderInfoLog(shader, 0x1000, NULL, buf);
fprintf(stderr, "Could not compile shader %d:\n%s\n",
shaderType, buf);
free(buf);
}
}
glDeleteShader(shader);
shader = 0;
}
}
return shader;
}
GLuint createProgram(const char* pVertexSource, const char* pFragmentSource) {
GLuint vertexShader = loadShader(GL_VERTEX_SHADER, pVertexSource);
if (!vertexShader) {
return 0;
}
GLuint pixelShader = loadShader(GL_FRAGMENT_SHADER, pFragmentSource);
if (!pixelShader) {
return 0;
}
GLuint program = glCreateProgram();
if (program) {
glAttachShader(program, vertexShader);
checkGlError("glAttachShader");
glAttachShader(program, pixelShader);
checkGlError("glAttachShader");
glLinkProgram(program);
GLint linkStatus = GL_FALSE;
glGetProgramiv(program, GL_LINK_STATUS, &linkStatus);
if (linkStatus != GL_TRUE) {
GLint bufLength = 0;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &bufLength);
if (bufLength) {
char* buf = (char*) malloc(bufLength);
if (buf) {
glGetProgramInfoLog(program, bufLength, NULL, buf);
fprintf(stderr, "Could not link program:\n%s\n", buf);
free(buf);
}
}
glDeleteProgram(program);
program = 0;
}
}
return program;
}
GLuint gProgram;
GLint gvPositionHandle;
GLint gYuvTexSamplerHandle;
bool setupGraphics(int w, int h) {
gProgram = createProgram(gVertexShader, gFragmentShader);
if (!gProgram) {
return false;
}
gvPositionHandle = glGetAttribLocation(gProgram, "vPosition");
checkGlError("glGetAttribLocation");
fprintf(stderr, "glGetAttribLocation(\"vPosition\") = %d\n",
gvPositionHandle);
gYuvTexSamplerHandle = glGetUniformLocation(gProgram, "yuvTexSampler");
checkGlError("glGetUniformLocation");
fprintf(stderr, "glGetUniformLocation(\"yuvTexSampler\") = %d\n",
gYuvTexSamplerHandle);
glViewport(0, 0, w, h);
checkGlError("glViewport");
return true;
}
int align(int x, int a) {
return (x + (a-1)) & (~(a-1));
}
const int yuvTexWidth = 608;
const int yuvTexHeight = 480;
const int yuvTexUsage = GraphicBuffer::USAGE_HW_TEXTURE |
GraphicBuffer::USAGE_SW_WRITE_RARELY;
const int yuvTexFormat = HAL_PIXEL_FORMAT_YV12;
const int yuvTexOffsetY = 0;
const bool yuvTexSameUV = false;
static sp<GraphicBuffer> yuvTexBuffer;
static GLuint yuvTex;
bool setupYuvTexSurface(EGLDisplay dpy, EGLContext context) {
int blockWidth = yuvTexWidth > 16 ? yuvTexWidth / 16 : 1;
int blockHeight = yuvTexHeight > 16 ? yuvTexHeight / 16 : 1;
yuvTexBuffer = new GraphicBuffer(yuvTexWidth, yuvTexHeight, yuvTexFormat,
yuvTexUsage);
int yuvTexStrideY = yuvTexBuffer->getStride();
int yuvTexOffsetV = yuvTexStrideY * yuvTexHeight;
int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf;
int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * yuvTexHeight/2;
int yuvTexStrideU = yuvTexStrideV;
char* buf = NULL;
status_t err = yuvTexBuffer->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&buf));
if (err != 0) {
fprintf(stderr, "yuvTexBuffer->lock(...) failed: %d\n", err);
return false;
}
for (int x = 0; x < yuvTexWidth; x++) {
for (int y = 0; y < yuvTexHeight; y++) {
int parityX = (x / blockWidth) & 1;
int parityY = (y / blockHeight) & 1;
unsigned char intensity = (parityX ^ parityY) ? 63 : 191;
buf[yuvTexOffsetY + (y * yuvTexStrideY) + x] = intensity;
if (x < yuvTexWidth / 2 && y < yuvTexHeight / 2) {
buf[yuvTexOffsetU + (y * yuvTexStrideU) + x] = intensity;
if (yuvTexSameUV) {
buf[yuvTexOffsetV + (y * yuvTexStrideV) + x] = intensity;
} else if (x < yuvTexWidth / 4 && y < yuvTexHeight / 4) {
buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 0] =
buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 1] =
buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 0] =
buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 1] = intensity;
}
}
}
}
err = yuvTexBuffer->unlock();
if (err != 0) {
fprintf(stderr, "yuvTexBuffer->unlock() failed: %d\n", err);
return false;
}
EGLClientBuffer clientBuffer = (EGLClientBuffer)yuvTexBuffer->getNativeBuffer();
EGLImageKHR img = eglCreateImageKHR(dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
clientBuffer, 0);
checkEglError("eglCreateImageKHR");
if (img == EGL_NO_IMAGE_KHR) {
return false;
}
glGenTextures(1, &yuvTex);
checkGlError("glGenTextures");
glBindTexture(GL_TEXTURE_EXTERNAL_OES, yuvTex);
checkGlError("glBindTexture");
glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, (GLeglImageOES)img);
checkGlError("glEGLImageTargetTexture2DOES");
return true;
}
const GLfloat gTriangleVertices[] = {
-0.5f, 0.5f,
-0.5f, -0.5f,
0.5f, -0.5f,
0.5f, 0.5f,
};
void renderFrame() {
glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
checkGlError("glClearColor");
glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
checkGlError("glClear");
glUseProgram(gProgram);
checkGlError("glUseProgram");
glVertexAttribPointer(gvPositionHandle, 2, GL_FLOAT, GL_FALSE, 0, gTriangleVertices);
checkGlError("glVertexAttribPointer");
glEnableVertexAttribArray(gvPositionHandle);
checkGlError("glEnableVertexAttribArray");
glUniform1i(gYuvTexSamplerHandle, 0);
checkGlError("glUniform1i");
glBindTexture(GL_TEXTURE_EXTERNAL_OES, yuvTex);
checkGlError("glBindTexture");
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
checkGlError("glDrawArrays");
}
void printEGLConfiguration(EGLDisplay dpy, EGLConfig config) {
#define X(VAL) {VAL, #VAL}
struct {EGLint attribute; const char* name;} names[] = {
X(EGL_BUFFER_SIZE),
X(EGL_ALPHA_SIZE),
X(EGL_BLUE_SIZE),
X(EGL_GREEN_SIZE),
X(EGL_RED_SIZE),
X(EGL_DEPTH_SIZE),
X(EGL_STENCIL_SIZE),
X(EGL_CONFIG_CAVEAT),
X(EGL_CONFIG_ID),
X(EGL_LEVEL),
X(EGL_MAX_PBUFFER_HEIGHT),
X(EGL_MAX_PBUFFER_PIXELS),
X(EGL_MAX_PBUFFER_WIDTH),
X(EGL_NATIVE_RENDERABLE),
X(EGL_NATIVE_VISUAL_ID),
X(EGL_NATIVE_VISUAL_TYPE),
X(EGL_SAMPLES),
X(EGL_SAMPLE_BUFFERS),
X(EGL_SURFACE_TYPE),
X(EGL_TRANSPARENT_TYPE),
X(EGL_TRANSPARENT_RED_VALUE),
X(EGL_TRANSPARENT_GREEN_VALUE),
X(EGL_TRANSPARENT_BLUE_VALUE),
X(EGL_BIND_TO_TEXTURE_RGB),
X(EGL_BIND_TO_TEXTURE_RGBA),
X(EGL_MIN_SWAP_INTERVAL),
X(EGL_MAX_SWAP_INTERVAL),
X(EGL_LUMINANCE_SIZE),
X(EGL_ALPHA_MASK_SIZE),
X(EGL_COLOR_BUFFER_TYPE),
X(EGL_RENDERABLE_TYPE),
X(EGL_CONFORMANT),
};
#undef X
for (size_t j = 0; j < sizeof(names) / sizeof(names[0]); j++) {
EGLint value = -1;
EGLint returnVal = eglGetConfigAttrib(dpy, config, names[j].attribute, &value);
EGLint error = eglGetError();
if (returnVal && error == EGL_SUCCESS) {
printf(" %s: ", names[j].name);
printf("%d (0x%x)", value, value);
}
}
printf("\n");
}
int main(int argc, char** argv) {
EGLBoolean returnValue;
EGLConfig myConfig = {0};
EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
EGLint s_configAttribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE };
EGLint majorVersion;
EGLint minorVersion;
EGLContext context;
EGLSurface surface;
EGLint w, h;
EGLDisplay dpy;
checkEglError("<init>");
dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
checkEglError("eglGetDisplay");
if (dpy == EGL_NO_DISPLAY) {
printf("eglGetDisplay returned EGL_NO_DISPLAY.\n");
return 0;
}
returnValue = eglInitialize(dpy, &majorVersion, &minorVersion);
checkEglError("eglInitialize", returnValue);
fprintf(stderr, "EGL version %d.%d\n", majorVersion, minorVersion);
if (returnValue != EGL_TRUE) {
printf("eglInitialize failed\n");
return 0;
}
WindowSurface windowSurface;
EGLNativeWindowType window = windowSurface.getSurface();
returnValue = EGLUtils::selectConfigForNativeWindow(dpy, s_configAttribs, window, &myConfig);
if (returnValue) {
printf("EGLUtils::selectConfigForNativeWindow() returned %d", returnValue);
return 1;
}
checkEglError("EGLUtils::selectConfigForNativeWindow");
printf("Chose this configuration:\n");
printEGLConfiguration(dpy, myConfig);
surface = eglCreateWindowSurface(dpy, myConfig, window, NULL);
checkEglError("eglCreateWindowSurface");
if (surface == EGL_NO_SURFACE) {
printf("gelCreateWindowSurface failed.\n");
return 1;
}
context = eglCreateContext(dpy, myConfig, EGL_NO_CONTEXT, context_attribs);
checkEglError("eglCreateContext");
if (context == EGL_NO_CONTEXT) {
printf("eglCreateContext failed\n");
return 1;
}
returnValue = eglMakeCurrent(dpy, surface, surface, context);
checkEglError("eglMakeCurrent", returnValue);
if (returnValue != EGL_TRUE) {
return 1;
}
eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
checkEglError("eglQuerySurface");
eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
checkEglError("eglQuerySurface");
GLint dim = w < h ? w : h;
fprintf(stderr, "Window dimensions: %d x %d\n", w, h);
printGLString("Version", GL_VERSION);
printGLString("Vendor", GL_VENDOR);
printGLString("Renderer", GL_RENDERER);
printGLString("Extensions", GL_EXTENSIONS);
if(!setupYuvTexSurface(dpy, context)) {
fprintf(stderr, "Could not set up texture surface.\n");
return 1;
}
if(!setupGraphics(w, h)) {
fprintf(stderr, "Could not set up graphics.\n");
return 1;
}
for (;;) {
renderFrame();
eglSwapBuffers(dpy, surface);
checkEglError("eglSwapBuffers");
}
return 0;
}