diff options
Diffstat (limited to 'libgralloc/framebuffer.cpp')
| -rw-r--r-- | libgralloc/framebuffer.cpp | 367 |
1 files changed, 0 insertions, 367 deletions
diff --git a/libgralloc/framebuffer.cpp b/libgralloc/framebuffer.cpp deleted file mode 100644 index f155b54..0000000 --- a/libgralloc/framebuffer.cpp +++ /dev/null @@ -1,367 +0,0 @@ -/* - * Copyright (C) 2008 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 <sys/mman.h> - -#include <dlfcn.h> - -#include <cutils/ashmem.h> -#include <cutils/log.h> - -#include <hardware/hardware.h> -#include <hardware/gralloc.h> - -#include <fcntl.h> -#include <errno.h> -#include <sys/ioctl.h> -#include <string.h> -#include <stdlib.h> - -#include <cutils/log.h> -#include <cutils/atomic.h> - -#if HAVE_ANDROID_OS -#include <linux/fb.h> -#include <s3cfb.h> -#endif - -#include "gralloc_priv.h" -#include "gr.h" - -/*****************************************************************************/ - -// numbers of buffers for page flipping -#if defined(NO_PAGE_FLIPPING) -// page-flipping is buggy on some devices -#define NUM_BUFFERS 1 -#else -#define NUM_BUFFERS 2 -#endif - - -enum { - PAGE_FLIP = 0x00000001, - LOCKED = 0x00000002 -}; - -struct fb_context_t { - framebuffer_device_t device; -}; - -/*****************************************************************************/ - -static int fb_setSwapInterval(struct framebuffer_device_t* dev, - int interval) -{ - fb_context_t* ctx = (fb_context_t*)dev; - if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) - return -EINVAL; - // FIXME: implement fb_setSwapInterval - return 0; -} - -static int fb_setUpdateRect(struct framebuffer_device_t* dev, - int l, int t, int w, int h) -{ - if (((w|h) <= 0) || ((l|t)<0)) - return -EINVAL; - - fb_context_t* ctx = (fb_context_t*)dev; - private_module_t* m = reinterpret_cast<private_module_t*>( - dev->common.module); - m->info.reserved[0] = 0x54445055; // "UPDT"; - m->info.reserved[1] = (uint16_t)l | ((uint32_t)t << 16); - m->info.reserved[2] = (uint16_t)(l+w) | ((uint32_t)(t+h) << 16); - return 0; -} - -static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer) -{ - if (private_handle_t::validate(buffer) < 0) - return -EINVAL; - - fb_context_t* ctx = (fb_context_t*)dev; - - private_handle_t const* hnd = reinterpret_cast<private_handle_t const*>(buffer); - private_module_t* m = reinterpret_cast<private_module_t*>( - dev->common.module); - - if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) { - const size_t offset = hnd->base - m->framebuffer->base; - m->info.activate = FB_ACTIVATE_VBL; - m->info.yoffset = offset / m->finfo.line_length; - if (ioctl(m->framebuffer->fd, FBIOPUT_VSCREENINFO, &m->info) == -1) { - LOGE("FBIOPUT_VSCREENINFO failed"); - m->base.unlock(&m->base, buffer); - return -errno; - } - m->currentBuffer = buffer; - - } else { - // If we can't do the page_flip, just copy the buffer to the front - // FIXME: use copybit HAL instead of memcpy - - void* fb_vaddr; - void* buffer_vaddr; - - m->base.lock(&m->base, m->framebuffer, - GRALLOC_USAGE_SW_WRITE_RARELY, - 0, 0, m->info.xres, m->info.yres, - &fb_vaddr); - - m->base.lock(&m->base, buffer, - GRALLOC_USAGE_SW_READ_RARELY, - 0, 0, m->info.xres, m->info.yres, - &buffer_vaddr); - - memcpy(fb_vaddr, buffer_vaddr, m->finfo.line_length * m->info.yres); - - m->base.unlock(&m->base, buffer); - m->base.unlock(&m->base, m->framebuffer); - } - - return 0; -} - -/*****************************************************************************/ - -int mapFrameBufferLocked(struct private_module_t* module) -{ - // already initialized... - if (module->framebuffer) { - return 0; - } - - char const * const device_template[] = { - "/dev/graphics/fb%u", - "/dev/fb%u", - 0 }; - - int fd = -1; - int i=0; - char name[64]; - - while ((fd==-1) && device_template[i]) { - snprintf(name, 64, device_template[i], 0); - fd = open(name, O_RDWR, 0); - i++; - } - if (fd < 0) - return -errno; - - struct fb_fix_screeninfo finfo; - if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) - return -errno; - - struct fb_var_screeninfo info; - if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) - return -errno; - - info.reserved[0] = 0; - info.reserved[1] = 0; - info.reserved[2] = 0; - info.xoffset = 0; - info.yoffset = 0; - info.activate = FB_ACTIVATE_NOW; - - /* - * Request NUM_BUFFERS screens (at lest 2 for page flipping) - */ - info.yres_virtual = info.yres * NUM_BUFFERS; - - - uint32_t flags = PAGE_FLIP; - if (ioctl(fd, FBIOPUT_VSCREENINFO, &info) == -1) { - info.yres_virtual = info.yres; - flags &= ~PAGE_FLIP; - LOGW("FBIOPUT_VSCREENINFO failed, page flipping not supported"); - } - - if (info.yres_virtual < info.yres * 2) { - // we need at least 2 for page-flipping - info.yres_virtual = info.yres; - flags &= ~PAGE_FLIP; - LOGW("page flipping not supported (yres_virtual=%d, requested=%d)", - info.yres_virtual, info.yres*2); - } - - if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) - return -errno; - - uint64_t refreshQuotient = - ( - uint64_t( info.upper_margin + info.lower_margin + info.yres ) - * ( info.left_margin + info.right_margin + info.xres ) - * info.pixclock - ); - - /* Beware, info.pixclock might be 0 under emulation, so avoid a - * division-by-0 here (SIGFPE on ARM) */ - int refreshRate = refreshQuotient > 0 ? (int)(1000000000000000LLU / refreshQuotient) : 0; - - if (refreshRate == 0) { - // bleagh, bad info from the driver - refreshRate = 60*1000; // 60 Hz - } - - if (int(info.width) <= 0 || int(info.height) <= 0) { - // the driver doesn't return that information - // default to 160 dpi - info.width = ((info.xres * 25.4f)/160.0f + 0.5f); - info.height = ((info.yres * 25.4f)/160.0f + 0.5f); - } - - float xdpi = (info.xres * 25.4f) / info.width; - float ydpi = (info.yres * 25.4f) / info.height; - float fps = refreshRate / 1000.0f; - - LOGI( "using (fd=%d)\n" - "id = %s\n" - "xres = %d px\n" - "yres = %d px\n" - "xres_virtual = %d px\n" - "yres_virtual = %d px\n" - "bpp = %d\n" - "r = %2u:%u\n" - "g = %2u:%u\n" - "b = %2u:%u\n", - fd, - finfo.id, - info.xres, - info.yres, - info.xres_virtual, - info.yres_virtual, - info.bits_per_pixel, - info.red.offset, info.red.length, - info.green.offset, info.green.length, - info.blue.offset, info.blue.length - ); - - LOGI( "width = %d mm (%f dpi)\n" - "height = %d mm (%f dpi)\n" - "refresh rate = %.2f Hz\n", - info.width, xdpi, - info.height, ydpi, - fps - ); - - - if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) - return -errno; - - if (finfo.smem_len <= 0) - return -errno; - - - module->flags = flags; - module->info = info; - module->finfo = finfo; - module->xdpi = xdpi; - module->ydpi = ydpi; - module->fps = fps; - - /* - * map the framebuffer - */ - - int err; - size_t fbSize = roundUpToPageSize(finfo.line_length * info.yres_virtual); - module->framebuffer = new private_handle_t(dup(fd), fbSize, 0); - - module->numBuffers = info.yres_virtual / info.yres; - module->bufferMask = 0; - - void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); - if (vaddr == MAP_FAILED) { - LOGE("Error mapping the framebuffer (%s)", strerror(errno)); - return -errno; - } - module->framebuffer->base = intptr_t(vaddr); - memset(vaddr, 0, fbSize); - - struct s3cfb_user_plane_alpha user_alpha; - - memset(&user_alpha, 0, sizeof(user_alpha)); - if(ioctl(fd, S3CFB_WIN_SET_PLANE_ALPHA, &user_alpha) == -1) - return -errno; - - return 0; -} - -static int mapFrameBuffer(struct private_module_t* module) -{ - pthread_mutex_lock(&module->lock); - int err = mapFrameBufferLocked(module); - pthread_mutex_unlock(&module->lock); - return err; -} - -/*****************************************************************************/ - -static int fb_close(struct hw_device_t *dev) -{ - fb_context_t* ctx = (fb_context_t*)dev; - if (ctx) { - free(ctx); - } - return 0; -} - -int fb_device_open(hw_module_t const* module, const char* name, - hw_device_t** device) -{ - int status = -EINVAL; - if (!strcmp(name, GRALLOC_HARDWARE_FB0)) { - alloc_device_t* gralloc_device; - status = gralloc_open(module, &gralloc_device); - if (status < 0) - return status; - - /* initialize our state here */ - fb_context_t *dev = (fb_context_t*)malloc(sizeof(*dev)); - memset(dev, 0, sizeof(*dev)); - - /* initialize the procs */ - 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; - - private_module_t* m = (private_module_t*)module; - status = mapFrameBuffer(m); - if (status >= 0) { - int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3); - int format = (m->info.bits_per_pixel == 32) - ? HAL_PIXEL_FORMAT_BGRA_8888 - : HAL_PIXEL_FORMAT_RGB_565; - const_cast<uint32_t&>(dev->device.flags) = 0; - const_cast<uint32_t&>(dev->device.width) = m->info.xres; - const_cast<uint32_t&>(dev->device.height) = m->info.yres; - const_cast<int&>(dev->device.stride) = stride; - const_cast<int&>(dev->device.format) = format; - const_cast<float&>(dev->device.xdpi) = m->xdpi; - const_cast<float&>(dev->device.ydpi) = m->ydpi; - const_cast<float&>(dev->device.fps) = m->fps; - const_cast<int&>(dev->device.minSwapInterval) = 0; - const_cast<int&>(dev->device.maxSwapInterval) = 1; - *device = &dev->device.common; - } - } - return status; -} |