emulator: opengl: Back-port GLES emulation from the master tree.
The modules here are only built when BUILD_EMULATOR_OPENGL is defined to true in your environment or your BoardConfig.mk (see tools/emulator/opengl/Android.mk) Change-Id: I5f32c35b4452fb5a7b4d5f9fc5870ec1da6032e6
This commit is contained in:
David 'Digit' Turner
798
tools/emulator/opengl/system/gralloc/gralloc.cpp
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798
tools/emulator/opengl/system/gralloc/gralloc.cpp
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@@ -0,0 +1,798 @@
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <string.h>
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#include <pthread.h>
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#ifdef HAVE_ANDROID_OS // just want PAGE_SIZE define
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# include <asm/page.h>
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#else
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# include <sys/user.h>
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#endif
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#include <cutils/ashmem.h>
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#include <unistd.h>
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#include <errno.h>
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#include <dlfcn.h>
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#include <sys/mman.h>
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#include "gralloc_cb.h"
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#include "HostConnection.h"
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#include "glUtils.h"
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#include <cutils/log.h>
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#include <cutils/properties.h>
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#define DBG_FUNC DBG("%s\n", __FUNCTION__)
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//
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// our private gralloc module structure
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//
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struct private_module_t {
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gralloc_module_t base;
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};
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/* If not NULL, this is a pointer to the fallback module.
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* This really is gralloc.default, which we'll use if we detect
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* that the emulator we're running in does not support GPU emulation.
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*/
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static gralloc_module_t* sFallback;
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static pthread_once_t sFallbackOnce = PTHREAD_ONCE_INIT;
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static void fallback_init(void); // forward
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typedef struct _alloc_list_node {
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buffer_handle_t handle;
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_alloc_list_node *next;
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_alloc_list_node *prev;
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} AllocListNode;
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//
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// Our gralloc device structure (alloc interface)
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//
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struct gralloc_device_t {
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alloc_device_t device;
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AllocListNode *allocListHead; // double linked list of allocated buffers
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pthread_mutex_t lock;
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};
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//
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// Our framebuffer device structure
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//
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struct fb_device_t {
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framebuffer_device_t device;
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};
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static int map_buffer(cb_handle_t *cb, void **vaddr)
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{
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if (cb->fd < 0 || cb->ashmemSize <= 0) {
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return -EINVAL;
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}
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void *addr = mmap(0, cb->ashmemSize, PROT_READ | PROT_WRITE,
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MAP_SHARED, cb->fd, 0);
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if (addr == MAP_FAILED) {
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return -errno;
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}
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cb->ashmemBase = intptr_t(addr);
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cb->ashmemBasePid = getpid();
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*vaddr = addr;
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return 0;
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}
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#define DEFINE_HOST_CONNECTION \
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HostConnection *hostCon = HostConnection::get(); \
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renderControl_encoder_context_t *rcEnc = (hostCon ? hostCon->rcEncoder() : NULL)
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#define DEFINE_AND_VALIDATE_HOST_CONNECTION \
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HostConnection *hostCon = HostConnection::get(); \
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if (!hostCon) { \
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LOGE("gralloc: Failed to get host connection\n"); \
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return -EIO; \
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} \
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renderControl_encoder_context_t *rcEnc = hostCon->rcEncoder(); \
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if (!rcEnc) { \
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LOGE("gralloc: Failed to get renderControl encoder context\n"); \
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return -EIO; \
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}
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//
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// gralloc device functions (alloc interface)
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//
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static int gralloc_alloc(alloc_device_t* dev,
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int w, int h, int format, int usage,
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buffer_handle_t* pHandle, int* pStride)
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{
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LOGD("gralloc_alloc w=%d h=%d usage=0x%x\n", w, h, usage);
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gralloc_device_t *grdev = (gralloc_device_t *)dev;
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if (!grdev || !pHandle || !pStride)
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return -EINVAL;
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//
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// Validate usage: buffer cannot be written both by s/w and h/w access.
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//
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bool sw_write = (0 != (usage & GRALLOC_USAGE_SW_WRITE_MASK));
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bool hw_write = (usage & GRALLOC_USAGE_HW_RENDER);
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if (hw_write && sw_write) {
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return -EINVAL;
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}
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int ashmem_size = 0;
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*pStride = 0;
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GLenum glFormat = 0;
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GLenum glType = 0;
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int bpp = 0;
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switch (format) {
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case HAL_PIXEL_FORMAT_RGBA_8888:
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case HAL_PIXEL_FORMAT_RGBX_8888:
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case HAL_PIXEL_FORMAT_BGRA_8888:
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bpp = 4;
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glFormat = GL_RGBA;
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glType = GL_UNSIGNED_BYTE;
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break;
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case HAL_PIXEL_FORMAT_RGB_888:
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bpp = 3;
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glFormat = GL_RGB;
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glType = GL_UNSIGNED_BYTE;
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break;
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case HAL_PIXEL_FORMAT_RGB_565:
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bpp = 2;
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glFormat = GL_RGB;
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glType = GL_UNSIGNED_SHORT_5_6_5;
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break;
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case HAL_PIXEL_FORMAT_RGBA_5551:
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bpp = 2;
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glFormat = GL_RGB5_A1_OES;
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glType = GL_UNSIGNED_SHORT_5_5_5_1;
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break;
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case HAL_PIXEL_FORMAT_RGBA_4444:
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bpp = 2;
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glFormat = GL_RGBA4_OES;
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glType = GL_UNSIGNED_SHORT_4_4_4_4;
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break;
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default:
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return -EINVAL;
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}
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if (usage & GRALLOC_USAGE_HW_FB) {
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// keep space for postCounter
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ashmem_size += sizeof(uint32_t);
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}
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if (usage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) {
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// keep space for image on guest memory if SW access is needed
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int align = 1;
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size_t bpr = (w*bpp + (align-1)) & ~(align-1);
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ashmem_size += (bpr * h);
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*pStride = bpr / bpp;
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}
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LOGD("gralloc_alloc ashmem_size=%d, tid %d\n", ashmem_size, gettid());
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//
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// Allocate space in ashmem if needed
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//
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int fd = -1;
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if (ashmem_size > 0) {
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// round to page size;
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ashmem_size = (ashmem_size + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
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fd = ashmem_create_region("gralloc-buffer", ashmem_size);
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if (fd < 0) {
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LOGE("gralloc_alloc failed to create ashmem region err=%d\n", errno);
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return -errno;
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}
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}
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cb_handle_t *cb = new cb_handle_t(fd, ashmem_size, usage,
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w, h, glFormat, glType);
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if (ashmem_size > 0) {
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//
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// map ashmem region if exist
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//
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void *vaddr;
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int err = map_buffer(cb, &vaddr);
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if (err) {
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close(fd);
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delete cb;
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return err;
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}
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cb->setFd(fd);
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}
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//
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// Allocate ColorBuffer handle on the host (only if h/w access is allowed)
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//
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if (usage & GRALLOC_USAGE_HW_MASK) {
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DEFINE_HOST_CONNECTION;
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if (hostCon && rcEnc) {
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cb->hostHandle = rcEnc->rcCreateColorBuffer(rcEnc, w, h, glFormat);
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LOGD("Created host ColorBuffer 0x%x\n", cb->hostHandle);
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}
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if (!cb->hostHandle) {
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// Could not create colorbuffer on host !!!
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close(fd);
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delete cb;
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return -EIO;
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}
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}
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//
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// alloc succeeded - insert the allocated handle to the allocated list
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//
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AllocListNode *node = new AllocListNode();
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pthread_mutex_lock(&grdev->lock);
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node->handle = cb;
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node->next = grdev->allocListHead;
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node->prev = NULL;
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if (grdev->allocListHead) {
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grdev->allocListHead->prev = node;
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}
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grdev->allocListHead = node;
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pthread_mutex_unlock(&grdev->lock);
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*pHandle = cb;
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return 0;
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}
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static int gralloc_free(alloc_device_t* dev,
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buffer_handle_t handle)
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{
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const cb_handle_t *cb = (const cb_handle_t *)handle;
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if (!cb_handle_t::validate((cb_handle_t*)cb)) {
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ERR("gralloc_free: invalid handle");
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return -EINVAL;
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}
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if (cb->hostHandle != 0) {
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DEFINE_AND_VALIDATE_HOST_CONNECTION;
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rcEnc->rcDestroyColorBuffer(rcEnc, cb->hostHandle);
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}
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//
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// detach and unmap ashmem area if present
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//
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if (cb->fd > 0) {
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if (cb->ashmemSize > 0 && cb->ashmemBase) {
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munmap((void *)cb->ashmemBase, cb->ashmemSize);
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}
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close(cb->fd);
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}
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// remove it from the allocated list
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gralloc_device_t *grdev = (gralloc_device_t *)dev;
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pthread_mutex_lock(&grdev->lock);
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AllocListNode *n = grdev->allocListHead;
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while( n && n->handle != cb ) {
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n = n->next;
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}
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if (n) {
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// buffer found on list - remove it from list
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if (n->next) {
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n->next->prev = n->prev;
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}
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if (n->prev) {
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n->prev->next = n->next;
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}
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else {
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grdev->allocListHead = n->next;
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}
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delete n;
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}
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pthread_mutex_unlock(&grdev->lock);
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delete cb;
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return 0;
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}
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static int gralloc_device_close(struct hw_device_t *dev)
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{
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gralloc_device_t* d = reinterpret_cast<gralloc_device_t*>(dev);
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if (d) {
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// free still allocated buffers
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while( d->allocListHead != NULL ) {
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gralloc_free(&d->device, d->allocListHead->handle);
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}
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// free device
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free(d);
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}
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return 0;
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}
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static int fb_compositionComplete(struct framebuffer_device_t* dev)
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||||
{
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return 0;
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}
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//
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// Framebuffer device functions
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//
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static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer)
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{
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fb_device_t *fbdev = (fb_device_t *)dev;
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||||
cb_handle_t *cb = (cb_handle_t *)buffer;
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||||
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if (!fbdev || !cb_handle_t::validate(cb) || !cb->canBePosted()) {
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return -EINVAL;
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}
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// Make sure we have host connection
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||||
DEFINE_AND_VALIDATE_HOST_CONNECTION;
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// increment the post count of the buffer
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||||
uint32_t *postCountPtr = (uint32_t *)cb->ashmemBase;
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||||
if (!postCountPtr) {
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// This should not happen
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||||
return -EINVAL;
|
||||
}
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||||
(*postCountPtr)++;
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||||
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||||
// send post request to host
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||||
rcEnc->rcFBPost(rcEnc, cb->hostHandle);
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hostCon->flush();
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||||
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return 0;
|
||||
}
|
||||
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||||
static int fb_setUpdateRect(struct framebuffer_device_t* dev,
|
||||
int l, int t, int w, int h)
|
||||
{
|
||||
fb_device_t *fbdev = (fb_device_t *)dev;
|
||||
|
||||
if (!fbdev) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
// Make sure we have host connection
|
||||
DEFINE_AND_VALIDATE_HOST_CONNECTION;
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||||
|
||||
// send request to host
|
||||
// XXX - should be implemented
|
||||
//rcEnc->rc_XXX
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||||
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||||
return 0;
|
||||
}
|
||||
|
||||
static int fb_setSwapInterval(struct framebuffer_device_t* dev,
|
||||
int interval)
|
||||
{
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||||
fb_device_t *fbdev = (fb_device_t *)dev;
|
||||
|
||||
if (!fbdev) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
// Make sure we have host connection
|
||||
DEFINE_AND_VALIDATE_HOST_CONNECTION;
|
||||
|
||||
// send request to host
|
||||
rcEnc->rcFBSetSwapInterval(rcEnc, interval);
|
||||
hostCon->flush();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int fb_close(struct hw_device_t *dev)
|
||||
{
|
||||
fb_device_t *fbdev = (fb_device_t *)dev;
|
||||
|
||||
if (fbdev) {
|
||||
delete fbdev;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// gralloc module functions - refcount + locking interface
|
||||
//
|
||||
static int gralloc_register_buffer(gralloc_module_t const* module,
|
||||
buffer_handle_t handle)
|
||||
{
|
||||
pthread_once(&sFallbackOnce, fallback_init);
|
||||
if (sFallback != NULL) {
|
||||
return sFallback->registerBuffer(sFallback, handle);
|
||||
}
|
||||
|
||||
|
||||
private_module_t *gr = (private_module_t *)module;
|
||||
cb_handle_t *cb = (cb_handle_t *)handle;
|
||||
if (!gr || !cb_handle_t::validate(cb)) {
|
||||
ERR("gralloc_register_buffer: invalid buffer");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
//
|
||||
// if the color buffer has ashmem region and it is not mapped in this
|
||||
// process map it now.
|
||||
//
|
||||
if (cb->ashmemSize > 0 && cb->mappedPid != getpid()) {
|
||||
void *vaddr;
|
||||
int err = map_buffer(cb, &vaddr);
|
||||
if (err) {
|
||||
ERR("gralloc_register_buffer: map failed");
|
||||
return -err;
|
||||
}
|
||||
cb->mappedPid = getpid();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gralloc_unregister_buffer(gralloc_module_t const* module,
|
||||
buffer_handle_t handle)
|
||||
{
|
||||
if (sFallback != NULL) {
|
||||
return sFallback->unregisterBuffer(sFallback, handle);
|
||||
}
|
||||
|
||||
private_module_t *gr = (private_module_t *)module;
|
||||
cb_handle_t *cb = (cb_handle_t *)handle;
|
||||
if (!gr || !cb_handle_t::validate(cb)) {
|
||||
ERR("gralloc_unregister_buffer: invalid buffer");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
//
|
||||
// unmap ashmem region if it was previously mapped in this process
|
||||
// (through register_buffer)
|
||||
//
|
||||
if (cb->ashmemSize > 0 && cb->mappedPid == getpid()) {
|
||||
void *vaddr;
|
||||
int err = munmap((void *)cb->ashmemBase, cb->ashmemSize);
|
||||
if (err) {
|
||||
ERR("gralloc_unregister_buffer: unmap failed");
|
||||
return -EINVAL;
|
||||
}
|
||||
cb->ashmemBase = NULL;
|
||||
cb->mappedPid = 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gralloc_lock(gralloc_module_t const* module,
|
||||
buffer_handle_t handle, int usage,
|
||||
int l, int t, int w, int h,
|
||||
void** vaddr)
|
||||
{
|
||||
if (sFallback != NULL) {
|
||||
return sFallback->lock(sFallback, handle, usage, l, t, w, h, vaddr);
|
||||
}
|
||||
|
||||
private_module_t *gr = (private_module_t *)module;
|
||||
cb_handle_t *cb = (cb_handle_t *)handle;
|
||||
if (!gr || !cb_handle_t::validate(cb)) {
|
||||
LOGE("gralloc_lock bad handle\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
// Validate usage,
|
||||
// 1. cannot be locked for hw access
|
||||
// 2. lock for either sw read or write.
|
||||
// 3. locked sw access must match usage during alloc time.
|
||||
bool sw_read = (0 != (usage & GRALLOC_USAGE_SW_READ_MASK));
|
||||
bool sw_write = (0 != (usage & GRALLOC_USAGE_SW_WRITE_MASK));
|
||||
bool hw_read = (usage & GRALLOC_USAGE_HW_TEXTURE);
|
||||
bool hw_write = (usage & GRALLOC_USAGE_HW_RENDER);
|
||||
bool sw_read_allowed = (0 != (cb->usage & GRALLOC_USAGE_SW_READ_MASK));
|
||||
bool sw_write_allowed = (0 != (cb->usage & GRALLOC_USAGE_SW_WRITE_MASK));
|
||||
|
||||
if ( (hw_read || hw_write) ||
|
||||
(!sw_read && !sw_write) ||
|
||||
(sw_read && !sw_read_allowed) ||
|
||||
(sw_write && !sw_write_allowed) ) {
|
||||
LOGE("gralloc_lock usage mismatch usage=0x%x cb->usage=0x%x\n", usage, cb->usage);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
EGLint postCount = 0;
|
||||
void *cpu_addr = NULL;
|
||||
|
||||
//
|
||||
// make sure ashmem area is mapped if needed
|
||||
//
|
||||
if (cb->canBePosted() || sw_read || sw_write) {
|
||||
if (cb->ashmemBasePid != getpid() || !cb->ashmemBase) {
|
||||
return -EACCES;
|
||||
}
|
||||
|
||||
if (cb->canBePosted()) {
|
||||
postCount = *((int *)cb->ashmemBase);
|
||||
cpu_addr = (void *)(cb->ashmemBase + sizeof(int));
|
||||
}
|
||||
else {
|
||||
cpu_addr = (void *)(cb->ashmemBase);
|
||||
}
|
||||
}
|
||||
|
||||
if (cb->hostHandle) {
|
||||
// Make sure we have host connection
|
||||
DEFINE_AND_VALIDATE_HOST_CONNECTION;
|
||||
|
||||
//
|
||||
// flush color buffer write cache on host and get its sync status.
|
||||
//
|
||||
int hostSyncStatus = rcEnc->rcColorBufferCacheFlush(rcEnc, cb->hostHandle,
|
||||
postCount,
|
||||
sw_read);
|
||||
if (hostSyncStatus < 0) {
|
||||
// host failed the color buffer sync - probably since it was already
|
||||
// locked for write access. fail the lock.
|
||||
LOGE("gralloc_lock cacheFlush failed postCount=%d sw_read=%d\n",
|
||||
postCount, sw_read);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
//
|
||||
// is virtual address required ?
|
||||
//
|
||||
if (sw_read || sw_write) {
|
||||
*vaddr = cpu_addr;
|
||||
}
|
||||
}
|
||||
|
||||
if (sw_write) {
|
||||
//
|
||||
// Keep locked region if locked for s/w write access.
|
||||
//
|
||||
cb->lockedLeft = l;
|
||||
cb->lockedTop = t;
|
||||
cb->lockedWidth = w;
|
||||
cb->lockedHeight = h;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gralloc_unlock(gralloc_module_t const* module,
|
||||
buffer_handle_t handle)
|
||||
{
|
||||
if (sFallback != NULL) {
|
||||
return sFallback->unlock(sFallback, handle);
|
||||
}
|
||||
|
||||
private_module_t *gr = (private_module_t *)module;
|
||||
cb_handle_t *cb = (cb_handle_t *)handle;
|
||||
if (!gr || !cb_handle_t::validate(cb)) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
//
|
||||
// if buffer was locked for s/w write, we need to update the host with
|
||||
// the updated data
|
||||
//
|
||||
if (cb->lockedWidth > 0 && cb->lockedHeight > 0 && cb->hostHandle) {
|
||||
|
||||
// Make sure we have host connection
|
||||
DEFINE_AND_VALIDATE_HOST_CONNECTION;
|
||||
|
||||
void *cpu_addr;
|
||||
if (cb->canBePosted()) {
|
||||
cpu_addr = (void *)(cb->ashmemBase + sizeof(int));
|
||||
}
|
||||
else {
|
||||
cpu_addr = (void *)(cb->ashmemBase);
|
||||
}
|
||||
|
||||
if (cb->lockedWidth < cb->width || cb->lockedHeight < cb->height) {
|
||||
int bpp = glUtilsPixelBitSize(cb->glFormat, cb->glType) >> 3;
|
||||
char *tmpBuf = new char[cb->lockedWidth * cb->lockedHeight * bpp];
|
||||
|
||||
int dst_line_len = cb->lockedWidth * bpp;
|
||||
int src_line_len = cb->width * bpp;
|
||||
char *src = (char *)cpu_addr + cb->lockedTop*src_line_len + cb->lockedLeft*bpp;
|
||||
char *dst = tmpBuf;
|
||||
for (int y=0; y<cb->lockedHeight; y++) {
|
||||
memcpy(dst, src, dst_line_len);
|
||||
src += src_line_len;
|
||||
dst += dst_line_len;
|
||||
}
|
||||
|
||||
rcEnc->rcUpdateColorBuffer(rcEnc, cb->hostHandle,
|
||||
cb->lockedLeft, cb->lockedTop,
|
||||
cb->lockedWidth, cb->lockedHeight,
|
||||
cb->glFormat, cb->glType,
|
||||
tmpBuf);
|
||||
|
||||
delete [] tmpBuf;
|
||||
}
|
||||
else {
|
||||
rcEnc->rcUpdateColorBuffer(rcEnc, cb->hostHandle, 0, 0,
|
||||
cb->width, cb->height,
|
||||
cb->glFormat, cb->glType,
|
||||
cpu_addr);
|
||||
}
|
||||
}
|
||||
|
||||
cb->lockedWidth = cb->lockedHeight = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int gralloc_device_open(const hw_module_t* module,
|
||||
const char* name,
|
||||
hw_device_t** device)
|
||||
{
|
||||
int status = -EINVAL;
|
||||
|
||||
LOGD("gralloc_device_open %s\n", name);
|
||||
|
||||
pthread_once( &sFallbackOnce, fallback_init );
|
||||
if (sFallback != NULL) {
|
||||
return sFallback->common.methods->open(&sFallback->common, name, device);
|
||||
}
|
||||
|
||||
if (!strcmp(name, GRALLOC_HARDWARE_GPU0)) {
|
||||
|
||||
// Create host connection and keep it in the TLS.
|
||||
// return error if connection with host can not be established
|
||||
HostConnection *hostCon = HostConnection::get();
|
||||
if (!hostCon) {
|
||||
LOGE("gralloc: failed to get host connection while opening %s\n", name);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
//
|
||||
// Allocate memory for the gralloc device (alloc interface)
|
||||
//
|
||||
gralloc_device_t *dev;
|
||||
dev = (gralloc_device_t*)malloc(sizeof(gralloc_device_t));
|
||||
if (NULL == dev) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
// Initialize our device structure
|
||||
//
|
||||
dev->device.common.tag = HARDWARE_DEVICE_TAG;
|
||||
dev->device.common.version = 0;
|
||||
dev->device.common.module = const_cast<hw_module_t*>(module);
|
||||
dev->device.common.close = gralloc_device_close;
|
||||
|
||||
dev->device.alloc = gralloc_alloc;
|
||||
dev->device.free = gralloc_free;
|
||||
dev->allocListHead = NULL;
|
||||
pthread_mutex_init(&dev->lock, NULL);
|
||||
|
||||
*device = &dev->device.common;
|
||||
status = 0;
|
||||
}
|
||||
else if (!strcmp(name, GRALLOC_HARDWARE_FB0)) {
|
||||
|
||||
// return error if connection with host can not be established
|
||||
DEFINE_AND_VALIDATE_HOST_CONNECTION;
|
||||
|
||||
//
|
||||
// Query the host for Framebuffer attributes
|
||||
//
|
||||
LOGD("gralloc: query Frabuffer attribs\n");
|
||||
EGLint width = rcEnc->rcGetFBParam(rcEnc, FB_WIDTH);
|
||||
LOGD("gralloc: width=%d\n", width);
|
||||
EGLint height = rcEnc->rcGetFBParam(rcEnc, FB_HEIGHT);
|
||||
LOGD("gralloc: height=%d\n", height);
|
||||
EGLint xdpi = rcEnc->rcGetFBParam(rcEnc, FB_XDPI);
|
||||
EGLint ydpi = rcEnc->rcGetFBParam(rcEnc, FB_YDPI);
|
||||
EGLint fps = rcEnc->rcGetFBParam(rcEnc, FB_FPS);
|
||||
EGLint min_si = rcEnc->rcGetFBParam(rcEnc, FB_MIN_SWAP_INTERVAL);
|
||||
EGLint max_si = rcEnc->rcGetFBParam(rcEnc, FB_MAX_SWAP_INTERVAL);
|
||||
|
||||
//
|
||||
// Allocate memory for the framebuffer device
|
||||
//
|
||||
fb_device_t *dev;
|
||||
dev = (fb_device_t*)malloc(sizeof(fb_device_t));
|
||||
if (NULL == dev) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
memset(dev, 0, sizeof(fb_device_t));
|
||||
|
||||
// Initialize our device structure
|
||||
//
|
||||
dev->device.common.tag = HARDWARE_DEVICE_TAG;
|
||||
dev->device.common.version = 0;
|
||||
dev->device.common.module = const_cast<hw_module_t*>(module);
|
||||
dev->device.common.close = fb_close;
|
||||
dev->device.setSwapInterval = fb_setSwapInterval;
|
||||
dev->device.post = fb_post;
|
||||
dev->device.setUpdateRect = 0; //fb_setUpdateRect;
|
||||
dev->device.compositionComplete = fb_compositionComplete; //XXX: this is a dummy
|
||||
|
||||
const_cast<uint32_t&>(dev->device.flags) = 0;
|
||||
const_cast<uint32_t&>(dev->device.width) = width;
|
||||
const_cast<uint32_t&>(dev->device.height) = height;
|
||||
const_cast<int&>(dev->device.stride) = width;
|
||||
const_cast<int&>(dev->device.format) = HAL_PIXEL_FORMAT_RGBA_8888;
|
||||
const_cast<float&>(dev->device.xdpi) = xdpi;
|
||||
const_cast<float&>(dev->device.ydpi) = ydpi;
|
||||
const_cast<float&>(dev->device.fps) = fps;
|
||||
const_cast<int&>(dev->device.minSwapInterval) = min_si;
|
||||
const_cast<int&>(dev->device.maxSwapInterval) = max_si;
|
||||
*device = &dev->device.common;
|
||||
|
||||
status = 0;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
//
|
||||
// define the HMI symbol - our module interface
|
||||
//
|
||||
static struct hw_module_methods_t gralloc_module_methods = {
|
||||
open: gralloc_device_open
|
||||
};
|
||||
|
||||
struct private_module_t HAL_MODULE_INFO_SYM = {
|
||||
base: {
|
||||
common: {
|
||||
tag: HARDWARE_MODULE_TAG,
|
||||
version_major: 1,
|
||||
version_minor: 0,
|
||||
id: GRALLOC_HARDWARE_MODULE_ID,
|
||||
name: "Graphics Memory Allocator Module",
|
||||
author: "The Android Open Source Project",
|
||||
methods: &gralloc_module_methods,
|
||||
dso: NULL,
|
||||
reserved: {0, }
|
||||
},
|
||||
registerBuffer: gralloc_register_buffer,
|
||||
unregisterBuffer: gralloc_unregister_buffer,
|
||||
lock: gralloc_lock,
|
||||
unlock: gralloc_unlock,
|
||||
perform: NULL,
|
||||
reserved_proc : {NULL, }
|
||||
}
|
||||
};
|
||||
|
||||
/* This function is called once to detect whether the emulator supports
|
||||
* GPU emulation (this is done by looking at the qemu.gles kernel
|
||||
* parameter, which must be > 0 if this is the case).
|
||||
*
|
||||
* If not, then load gralloc.default instead as a fallback.
|
||||
*/
|
||||
static void
|
||||
fallback_init(void)
|
||||
{
|
||||
char prop[PROPERTY_VALUE_MAX];
|
||||
void* module;
|
||||
|
||||
property_get("ro.kernel.qemu.gles", prop, "0");
|
||||
if (atoi(prop) > 0) {
|
||||
return;
|
||||
}
|
||||
LOGD("Emulator without GPU emulation detected.");
|
||||
module = dlopen("/system/lib/hw/gralloc.default.so", RTLD_LAZY|RTLD_LOCAL);
|
||||
if (module != NULL) {
|
||||
sFallback = reinterpret_cast<gralloc_module_t*>(dlsym(module, HAL_MODULE_INFO_SYM_AS_STR));
|
||||
if (sFallback == NULL) {
|
||||
dlclose(module);
|
||||
}
|
||||
}
|
||||
if (sFallback == NULL) {
|
||||
LOGE("Could not find software fallback module!?");
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user