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-rw-r--r--libgralloc/gralloc.cpp311
1 files changed, 0 insertions, 311 deletions
diff --git a/libgralloc/gralloc.cpp b/libgralloc/gralloc.cpp
deleted file mode 100644
index dcd2e2b..0000000
--- a/libgralloc/gralloc.cpp
+++ /dev/null
@@ -1,311 +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 <limits.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <pthread.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-
-#include <cutils/ashmem.h>
-#include <cutils/log.h>
-#include <cutils/atomic.h>
-
-#include <hardware/hardware.h>
-#include <hardware/gralloc.h>
-
-#include "gralloc_priv.h"
-#include "gr.h"
-
-/*****************************************************************************/
-
-struct gralloc_context_t {
- alloc_device_t device;
- /* our private data here */
-};
-
-static int gralloc_alloc_buffer(alloc_device_t* dev,
- size_t size, int usage, buffer_handle_t* pHandle);
-
-/*****************************************************************************/
-
-int fb_device_open(const hw_module_t* module, const char* name,
- hw_device_t** device);
-
-static int gralloc_device_open(const hw_module_t* module, const char* name,
- hw_device_t** device);
-
-extern int gralloc_lock(gralloc_module_t const* module,
- buffer_handle_t handle, int usage,
- int l, int t, int w, int h,
- void** vaddr);
-
-extern int gralloc_unlock(gralloc_module_t const* module,
- buffer_handle_t handle);
-
-extern int gralloc_register_buffer(gralloc_module_t const* module,
- buffer_handle_t handle);
-
-extern int gralloc_unregister_buffer(gralloc_module_t const* module,
- buffer_handle_t handle);
-
-/*****************************************************************************/
-
-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
- },
- registerBuffer: gralloc_register_buffer,
- unregisterBuffer: gralloc_unregister_buffer,
- lock: gralloc_lock,
- unlock: gralloc_unlock,
- },
- framebuffer: 0,
- flags: 0,
- numBuffers: 0,
- bufferMask: 0,
- lock: PTHREAD_MUTEX_INITIALIZER,
- currentBuffer: 0,
-};
-
-/*****************************************************************************/
-
-static int gralloc_alloc_framebuffer_locked(alloc_device_t* dev,
- size_t size, int usage, buffer_handle_t* pHandle)
-{
- private_module_t* m = reinterpret_cast<private_module_t*>(
- dev->common.module);
-
- // allocate the framebuffer
- if (m->framebuffer == NULL) {
- // initialize the framebuffer, the framebuffer is mapped once
- // and forever.
- int err = mapFrameBufferLocked(m);
- if (err < 0) {
- return err;
- }
- }
-
- const uint32_t bufferMask = m->bufferMask;
- const uint32_t numBuffers = m->numBuffers;
- const size_t bufferSize = m->finfo.line_length * m->info.yres;
- if (numBuffers == 1) {
- // If we have only one buffer, we never use page-flipping. Instead,
- // we return a regular buffer which will be memcpy'ed to the main
- // screen when post is called.
- int newUsage = (usage & ~GRALLOC_USAGE_HW_FB) | GRALLOC_USAGE_HW_2D;
- return gralloc_alloc_buffer(dev, bufferSize, newUsage, pHandle);
- }
-
- if (bufferMask >= ((1LU<<numBuffers)-1)) {
- // We ran out of buffers.
- return -ENOMEM;
- }
-
- // create a "fake" handles for it
- intptr_t vaddr = intptr_t(m->framebuffer->base);
- private_handle_t* hnd = new private_handle_t(dup(m->framebuffer->fd), size,
- private_handle_t::PRIV_FLAGS_FRAMEBUFFER);
-
- // find a free slot
- for (uint32_t i=0 ; i<numBuffers ; i++) {
- if ((bufferMask & (1LU<<i)) == 0) {
- m->bufferMask |= (1LU<<i);
- break;
- }
- vaddr += bufferSize;
- }
-
- hnd->base = vaddr;
- hnd->offset = vaddr - intptr_t(m->framebuffer->base);
- *pHandle = hnd;
-
- return 0;
-}
-
-static int gralloc_alloc_framebuffer(alloc_device_t* dev,
- size_t size, int usage, buffer_handle_t* pHandle)
-{
- private_module_t* m = reinterpret_cast<private_module_t*>(
- dev->common.module);
- pthread_mutex_lock(&m->lock);
- int err = gralloc_alloc_framebuffer_locked(dev, size, usage, pHandle);
- pthread_mutex_unlock(&m->lock);
- return err;
-}
-
-static int gralloc_alloc_buffer(alloc_device_t* dev,
- size_t size, int usage, buffer_handle_t* pHandle)
-{
- int err = 0;
- int fd = -1;
-
- size = roundUpToPageSize(size);
-
- fd = ashmem_create_region("gralloc-buffer", size);
- if (fd < 0) {
- LOGE("couldn't create ashmem (%s)", strerror(-errno));
- err = -errno;
- }
-
- if (err == 0) {
- private_handle_t* hnd = new private_handle_t(fd, size, 0);
- gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>(
- dev->common.module);
- err = mapBuffer(module, hnd);
- if (err == 0) {
- *pHandle = hnd;
- }
- }
-
- LOGE_IF(err, "gralloc failed err=%s", strerror(-err));
-
- return err;
-}
-
-/*****************************************************************************/
-
-static int gralloc_alloc(alloc_device_t* dev,
- int w, int h, int format, int usage,
- buffer_handle_t* pHandle, int* pStride)
-{
- if (!pHandle || !pStride)
- return -EINVAL;
-
- size_t size, stride;
-
- int align = 4;
- int bpp = 0;
- switch (format) {
- case HAL_PIXEL_FORMAT_RGBA_8888:
- case HAL_PIXEL_FORMAT_RGBX_8888:
- case HAL_PIXEL_FORMAT_BGRA_8888:
- bpp = 4;
- break;
- case HAL_PIXEL_FORMAT_RGB_888:
- bpp = 3;
- break;
- case HAL_PIXEL_FORMAT_RGB_565:
- case HAL_PIXEL_FORMAT_RGBA_5551:
- case HAL_PIXEL_FORMAT_RGBA_4444:
- bpp = 2;
- break;
- default:
- return -EINVAL;
- }
- size_t bpr = (w*bpp + (align-1)) & ~(align-1);
- size = bpr * h;
- stride = bpr / bpp;
-
- int err;
- if (usage & GRALLOC_USAGE_HW_FB) {
- err = gralloc_alloc_framebuffer(dev, size, usage, pHandle);
- } else {
- err = gralloc_alloc_buffer(dev, size, usage, pHandle);
- }
-
- if (err < 0) {
- return err;
- }
-
- *pStride = stride;
- return 0;
-}
-
-static int gralloc_free(alloc_device_t* dev,
- buffer_handle_t handle)
-{
- if (private_handle_t::validate(handle) < 0)
- return -EINVAL;
-
- private_handle_t const* hnd = reinterpret_cast<private_handle_t const*>(handle);
- if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
- // free this buffer
- private_module_t* m = reinterpret_cast<private_module_t*>(
- dev->common.module);
- const size_t bufferSize = m->finfo.line_length * m->info.yres;
- int index = (hnd->base - m->framebuffer->base) / bufferSize;
- m->bufferMask &= ~(1<<index);
- } else {
- gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>(
- dev->common.module);
- terminateBuffer(module, const_cast<private_handle_t*>(hnd));
- }
-
- close(hnd->fd);
- delete hnd;
- return 0;
-}
-
-/*****************************************************************************/
-
-static int gralloc_close(struct hw_device_t *dev)
-{
- gralloc_context_t* ctx = reinterpret_cast<gralloc_context_t*>(dev);
- if (ctx) {
- /* TODO: keep a list of all buffer_handle_t created, and free them
- * all here.
- */
- free(ctx);
- }
- return 0;
-}
-
-int gralloc_device_open(const hw_module_t* module, const char* name,
- hw_device_t** device)
-{
- int status = -EINVAL;
- if (!strcmp(name, GRALLOC_HARDWARE_GPU0)) {
- gralloc_context_t *dev;
- dev = (gralloc_context_t*)malloc(sizeof(*dev));
-
- /* initialize our state here */
- 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 = gralloc_close;
-
- dev->device.alloc = gralloc_alloc;
- dev->device.free = gralloc_free;
-
- *device = &dev->device.common;
- status = 0;
- } else {
- status = fb_device_open(module, name, device);
- }
- return status;
-}
generated by cgit v1.1 at 2024-05-15 06:49:30 +0000