| /* |
| * Copyright (C) 2011 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 "eglDisplay.h" |
| #include "HostConnection.h" |
| #include <dlfcn.h> |
| |
| static const int systemEGLVersionMajor = 1; |
| static const int systemEGLVersionMinor = 4; |
| static const char systemEGLVendor[] = "Google Android emulator"; |
| |
| // list of extensions supported by this EGL implementation |
| // NOTE that each extension name should be suffixed with space |
| static const char systemStaticEGLExtensions[] = |
| "EGL_ANDROID_image_native_buffer " |
| "EGL_KHR_fence_sync "; |
| |
| // list of extensions supported by this EGL implementation only if supported |
| // on the host implementation. |
| // NOTE that each extension name should be suffixed with space |
| static const char systemDynamicEGLExtensions[] = |
| "EGL_KHR_image_base " |
| "EGL_KHR_gl_texture_2d_image "; |
| |
| |
| static void *s_gles_lib = NULL; |
| static void *s_gles2_lib = NULL; |
| |
| // The following function will be called when we (libEGL) |
| // gets unloaded |
| // At this point we want to unload the gles libraries we |
| // might have loaded during initialization |
| static void __attribute__ ((destructor)) do_on_unload(void) |
| { |
| if (s_gles_lib) { |
| dlclose(s_gles_lib); |
| } |
| |
| if (s_gles2_lib) { |
| dlclose(s_gles2_lib); |
| } |
| } |
| |
| eglDisplay::eglDisplay() : |
| m_initialized(false), |
| m_major(0), |
| m_minor(0), |
| m_hostRendererVersion(0), |
| m_numConfigs(0), |
| m_numConfigAttribs(0), |
| m_attribs(DefaultKeyedVector<EGLint, EGLint>(ATTRIBUTE_NONE)), |
| m_configs(NULL), |
| m_gles_iface(NULL), |
| m_gles2_iface(NULL), |
| m_versionString(NULL), |
| m_vendorString(NULL), |
| m_extensionString(NULL) |
| { |
| pthread_mutex_init(&m_lock, NULL); |
| } |
| |
| eglDisplay::~eglDisplay() |
| { |
| pthread_mutex_destroy(&m_lock); |
| } |
| |
| bool eglDisplay::initialize(EGLClient_eglInterface *eglIface) |
| { |
| pthread_mutex_lock(&m_lock); |
| if (!m_initialized) { |
| |
| // |
| // load GLES client API |
| // |
| m_gles_iface = loadGLESClientAPI("/system/lib/egl/libGLESv1_CM_emulation.so", |
| eglIface, |
| &s_gles_lib); |
| if (!m_gles_iface) { |
| pthread_mutex_unlock(&m_lock); |
| ALOGE("Failed to load gles1 iface"); |
| return false; |
| } |
| |
| #ifdef WITH_GLES2 |
| m_gles2_iface = loadGLESClientAPI("/system/lib/egl/libGLESv2_emulation.so", |
| eglIface, |
| &s_gles2_lib); |
| // Note that if loading gles2 failed, we can still run with no |
| // GLES2 support, having GLES2 is not mandatory. |
| #endif |
| |
| // |
| // establish connection with the host |
| // |
| HostConnection *hcon = HostConnection::get(); |
| if (!hcon) { |
| pthread_mutex_unlock(&m_lock); |
| ALOGE("Failed to establish connection with the host\n"); |
| return false; |
| } |
| |
| // |
| // get renderControl encoder instance |
| // |
| renderControl_encoder_context_t *rcEnc = hcon->rcEncoder(); |
| if (!rcEnc) { |
| pthread_mutex_unlock(&m_lock); |
| ALOGE("Failed to get renderControl encoder instance"); |
| return false; |
| } |
| |
| // |
| // Query host reneder and EGL version |
| // |
| m_hostRendererVersion = rcEnc->rcGetRendererVersion(rcEnc); |
| EGLint status = rcEnc->rcGetEGLVersion(rcEnc, &m_major, &m_minor); |
| if (status != EGL_TRUE) { |
| // host EGL initialization failed !! |
| pthread_mutex_unlock(&m_lock); |
| return false; |
| } |
| |
| // |
| // Take minimum version beween what we support and what the host support |
| // |
| if (m_major > systemEGLVersionMajor) { |
| m_major = systemEGLVersionMajor; |
| m_minor = systemEGLVersionMinor; |
| } |
| else if (m_major == systemEGLVersionMajor && |
| m_minor > systemEGLVersionMinor) { |
| m_minor = systemEGLVersionMinor; |
| } |
| |
| // |
| // Query the host for the set of configs |
| // |
| m_numConfigs = rcEnc->rcGetNumConfigs(rcEnc, (uint32_t*)&m_numConfigAttribs); |
| if (m_numConfigs <= 0 || m_numConfigAttribs <= 0) { |
| // just sanity check - should never happen |
| pthread_mutex_unlock(&m_lock); |
| return false; |
| } |
| |
| uint32_t nInts = m_numConfigAttribs * (m_numConfigs + 1); |
| EGLint tmp_buf[nInts]; |
| m_configs = new EGLint[nInts-m_numConfigAttribs]; |
| if (!m_configs) { |
| pthread_mutex_unlock(&m_lock); |
| return false; |
| } |
| |
| //EGLint n = rcEnc->rcGetConfigs(rcEnc, nInts*sizeof(EGLint), m_configs); |
| EGLint n = rcEnc->rcGetConfigs(rcEnc, nInts*sizeof(EGLint), (GLuint*)tmp_buf); |
| if (n != m_numConfigs) { |
| pthread_mutex_unlock(&m_lock); |
| return false; |
| } |
| |
| //Fill the attributes vector. |
| //The first m_numConfigAttribs values of tmp_buf are the actual attributes enums. |
| for (int i=0; i<m_numConfigAttribs; i++) { |
| m_attribs.add(tmp_buf[i], i); |
| } |
| |
| //Copy the actual configs data to m_configs |
| memcpy(m_configs, tmp_buf + m_numConfigAttribs, m_numConfigs*m_numConfigAttribs*sizeof(EGLint)); |
| |
| m_initialized = true; |
| } |
| pthread_mutex_unlock(&m_lock); |
| |
| processConfigs(); |
| |
| return true; |
| } |
| |
| void eglDisplay::processConfigs() |
| { |
| for (int i=0; i<m_numConfigs; i++) { |
| EGLConfig config = (EGLConfig)i; |
| //Setup the EGL_NATIVE_VISUAL_ID attribute |
| PixelFormat format; |
| if (getConfigNativePixelFormat(config, &format)) { |
| setConfigAttrib(config, EGL_NATIVE_VISUAL_ID, format); |
| } |
| } |
| } |
| |
| void eglDisplay::terminate() |
| { |
| pthread_mutex_lock(&m_lock); |
| if (m_initialized) { |
| m_initialized = false; |
| delete [] m_configs; |
| m_configs = NULL; |
| |
| if (m_versionString) { |
| free(m_versionString); |
| m_versionString = NULL; |
| } |
| if (m_vendorString) { |
| free(m_vendorString); |
| m_vendorString = NULL; |
| } |
| if (m_extensionString) { |
| free(m_extensionString); |
| m_extensionString = NULL; |
| } |
| } |
| pthread_mutex_unlock(&m_lock); |
| } |
| |
| EGLClient_glesInterface *eglDisplay::loadGLESClientAPI(const char *libName, |
| EGLClient_eglInterface *eglIface, |
| void **libHandle) |
| { |
| void *lib = dlopen(libName, RTLD_NOW); |
| if (!lib) { |
| ALOGE("Failed to dlopen %s", libName); |
| return NULL; |
| } |
| |
| init_emul_gles_t init_gles_func = (init_emul_gles_t)dlsym(lib,"init_emul_gles"); |
| if (!init_gles_func) { |
| ALOGE("Failed to find init_emul_gles"); |
| dlclose((void*)lib); |
| return NULL; |
| } |
| |
| *libHandle = lib; |
| return (*init_gles_func)(eglIface); |
| } |
| |
| static char *queryHostEGLString(EGLint name) |
| { |
| HostConnection *hcon = HostConnection::get(); |
| if (hcon) { |
| renderControl_encoder_context_t *rcEnc = hcon->rcEncoder(); |
| if (rcEnc) { |
| int n = rcEnc->rcQueryEGLString(rcEnc, name, NULL, 0); |
| if (n < 0) { |
| // allocate space for the string with additional |
| // space charachter to be suffixed at the end. |
| char *str = (char *)malloc(-n+2); |
| n = rcEnc->rcQueryEGLString(rcEnc, name, str, -n); |
| if (n > 0) { |
| // add extra space at end of string which will be |
| // needed later when filtering the extension list. |
| strcat(str, " "); |
| return str; |
| } |
| |
| free(str); |
| } |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static bool findExtInList(const char* token, int tokenlen, const char* list) |
| { |
| const char* p = list; |
| while (*p != '\0') { |
| const char* q = strchr(p, ' '); |
| if (q == NULL) { |
| /* should not happen, list must be space-terminated */ |
| break; |
| } |
| if (tokenlen == (q - p) && !memcmp(token, p, tokenlen)) { |
| return true; /* found it */ |
| } |
| p = q+1; |
| } |
| return false; /* not found */ |
| } |
| |
| static char *buildExtensionString() |
| { |
| //Query host extension string |
| char *hostExt = queryHostEGLString(EGL_EXTENSIONS); |
| if (!hostExt || (hostExt[1] == '\0')) { |
| // no extensions on host - only static extension list supported |
| return strdup(systemStaticEGLExtensions); |
| } |
| |
| // |
| // Filter host extension list to include only extensions |
| // we can support (in the systemDynamicEGLExtensions list) |
| // |
| char *ext = (char *)hostExt; |
| char *c = ext; |
| char *insert = ext; |
| while(*c != '\0') { |
| if (*c == ' ') { |
| int len = c - ext; |
| if (findExtInList(ext, len, systemDynamicEGLExtensions)) { |
| if (ext != insert) { |
| memcpy(insert, ext, len+1); // including space |
| } |
| insert += (len + 1); |
| } |
| ext = c + 1; |
| } |
| c++; |
| } |
| *insert = '\0'; |
| |
| int n = strlen(hostExt); |
| if (n > 0) { |
| char *str; |
| asprintf(&str,"%s%s", systemStaticEGLExtensions, hostExt); |
| free((char*)hostExt); |
| return str; |
| } |
| else { |
| free((char*)hostExt); |
| return strdup(systemStaticEGLExtensions); |
| } |
| } |
| |
| const char *eglDisplay::queryString(EGLint name) |
| { |
| if (name == EGL_CLIENT_APIS) { |
| return "OpenGL_ES"; |
| } |
| else if (name == EGL_VERSION) { |
| pthread_mutex_lock(&m_lock); |
| if (m_versionString) { |
| pthread_mutex_unlock(&m_lock); |
| return m_versionString; |
| } |
| |
| // build version string |
| asprintf(&m_versionString, "%d.%d", m_major, m_minor); |
| pthread_mutex_unlock(&m_lock); |
| |
| return m_versionString; |
| } |
| else if (name == EGL_VENDOR) { |
| pthread_mutex_lock(&m_lock); |
| if (m_vendorString) { |
| pthread_mutex_unlock(&m_lock); |
| return m_vendorString; |
| } |
| |
| // build vendor string |
| const char *hostVendor = queryHostEGLString(EGL_VENDOR); |
| |
| if (hostVendor) { |
| asprintf(&m_vendorString, "%s Host: %s", |
| systemEGLVendor, hostVendor); |
| free((char*)hostVendor); |
| } |
| else { |
| m_vendorString = (char *)systemEGLVendor; |
| } |
| pthread_mutex_unlock(&m_lock); |
| |
| return m_vendorString; |
| } |
| else if (name == EGL_EXTENSIONS) { |
| pthread_mutex_lock(&m_lock); |
| if (m_extensionString) { |
| pthread_mutex_unlock(&m_lock); |
| return m_extensionString; |
| } |
| |
| // build extension string |
| m_extensionString = buildExtensionString(); |
| pthread_mutex_unlock(&m_lock); |
| |
| return m_extensionString; |
| } |
| else { |
| ALOGE("[%s] Unknown name %d\n", __FUNCTION__, name); |
| return NULL; |
| } |
| } |
| |
| /* To get the value of attribute <a> of config <c> use the following formula: |
| * value = *(m_configs + (int)c*m_numConfigAttribs + a); |
| */ |
| EGLBoolean eglDisplay::getAttribValue(EGLConfig config, EGLint attribIdx, EGLint * value) |
| { |
| if (attribIdx == ATTRIBUTE_NONE) |
| { |
| ALOGE("[%s] Bad attribute idx\n", __FUNCTION__); |
| return EGL_FALSE; |
| } |
| *value = *(m_configs + (int)config*m_numConfigAttribs + attribIdx); |
| return EGL_TRUE; |
| } |
| |
| EGLBoolean eglDisplay::getConfigAttrib(EGLConfig config, EGLint attrib, EGLint * value) |
| { |
| //Though it seems that valueFor() is thread-safe, we don't take chanses |
| pthread_mutex_lock(&m_lock); |
| EGLBoolean ret = getAttribValue(config, m_attribs.valueFor(attrib), value); |
| pthread_mutex_unlock(&m_lock); |
| return ret; |
| } |
| |
| void eglDisplay::dumpConfig(EGLConfig config) |
| { |
| EGLint value = 0; |
| DBG("^^^^^^^^^^ dumpConfig %d ^^^^^^^^^^^^^^^^^^", (int)config); |
| for (int i=0; i<m_numConfigAttribs; i++) { |
| getAttribValue(config, i, &value); |
| DBG("{%d}[%d] %d\n", (int)config, i, value); |
| } |
| } |
| |
| /* To set the value of attribute <a> of config <c> use the following formula: |
| * *(m_configs + (int)c*m_numConfigAttribs + a) = value; |
| */ |
| EGLBoolean eglDisplay::setAttribValue(EGLConfig config, EGLint attribIdx, EGLint value) |
| { |
| if (attribIdx == ATTRIBUTE_NONE) |
| { |
| ALOGE("[%s] Bad attribute idx\n", __FUNCTION__); |
| return EGL_FALSE; |
| } |
| *(m_configs + (int)config*m_numConfigAttribs + attribIdx) = value; |
| return EGL_TRUE; |
| } |
| |
| EGLBoolean eglDisplay::setConfigAttrib(EGLConfig config, EGLint attrib, EGLint value) |
| { |
| //Though it seems that valueFor() is thread-safe, we don't take chanses |
| pthread_mutex_lock(&m_lock); |
| EGLBoolean ret = setAttribValue(config, m_attribs.valueFor(attrib), value); |
| pthread_mutex_unlock(&m_lock); |
| return ret; |
| } |
| |
| |
| EGLBoolean eglDisplay::getConfigNativePixelFormat(EGLConfig config, PixelFormat * format) |
| { |
| EGLint redSize, blueSize, greenSize, alphaSize; |
| |
| if ( !(getAttribValue(config, m_attribs.valueFor(EGL_RED_SIZE), &redSize) && |
| getAttribValue(config, m_attribs.valueFor(EGL_BLUE_SIZE), &blueSize) && |
| getAttribValue(config, m_attribs.valueFor(EGL_GREEN_SIZE), &greenSize) && |
| getAttribValue(config, m_attribs.valueFor(EGL_ALPHA_SIZE), &alphaSize)) ) |
| { |
| ALOGE("Couldn't find value for one of the pixel format attributes"); |
| return EGL_FALSE; |
| } |
| |
| //calculate the GL internal format |
| if ((redSize==8)&&(greenSize==8)&&(blueSize==8)&&(alphaSize==8)) *format = PIXEL_FORMAT_RGBA_8888; //XXX: BGR? |
| else if ((redSize==8)&&(greenSize==8)&&(blueSize==8)&&(alphaSize==0)) *format = PIXEL_FORMAT_RGBX_8888; //XXX or PIXEL_FORMAT_RGB_888 |
| else if ((redSize==5)&&(greenSize==6)&&(blueSize==5)&&(alphaSize==0)) *format = PIXEL_FORMAT_RGB_565; |
| else if ((redSize==5)&&(greenSize==5)&&(blueSize==5)&&(alphaSize==1)) *format = PIXEL_FORMAT_RGBA_5551; |
| else if ((redSize==4)&&(greenSize==4)&&(blueSize==4)&&(alphaSize==4)) *format = PIXEL_FORMAT_RGBA_4444; |
| else { |
| return EGL_FALSE; |
| } |
| return EGL_TRUE; |
| } |
| EGLBoolean eglDisplay::getConfigGLPixelFormat(EGLConfig config, GLenum * format) |
| { |
| EGLint redSize, blueSize, greenSize, alphaSize; |
| |
| if ( !(getAttribValue(config, m_attribs.valueFor(EGL_RED_SIZE), &redSize) && |
| getAttribValue(config, m_attribs.valueFor(EGL_BLUE_SIZE), &blueSize) && |
| getAttribValue(config, m_attribs.valueFor(EGL_GREEN_SIZE), &greenSize) && |
| getAttribValue(config, m_attribs.valueFor(EGL_ALPHA_SIZE), &alphaSize)) ) |
| { |
| ALOGE("Couldn't find value for one of the pixel format attributes"); |
| return EGL_FALSE; |
| } |
| |
| //calculate the GL internal format |
| if ((redSize==8)&&(blueSize==8)&&(blueSize==8)&&(alphaSize==8)) *format = GL_RGBA; |
| else if ((redSize==8)&&(greenSize==8)&&(blueSize==8)&&(alphaSize==0)) *format = GL_RGB; |
| else if ((redSize==5)&&(greenSize==6)&&(blueSize==5)&&(alphaSize==0)) *format = GL_RGB565_OES; |
| else if ((redSize==5)&&(greenSize==5)&&(blueSize==5)&&(alphaSize==1)) *format = GL_RGB5_A1_OES; |
| else if ((redSize==4)&&(greenSize==4)&&(blueSize==4)&&(alphaSize==4)) *format = GL_RGBA4_OES; |
| else return EGL_FALSE; |
| |
| return EGL_TRUE; |
| } |
