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Integrate from //sandbox/mathias/donut/...@145728

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SurfaceFlinger rework for new EGL driver model support.
This commit is contained in:
Mathias Agopian 2009-04-10 14:24:31 -07:00
parent cfce2add7e
commit a8a75166a2
10 changed files with 1451 additions and 9 deletions
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5
Android.mk
View file

@ -33,3 +33,8 @@ endif
LOCAL_MODULE:= libhardware
include $(BUILD_SHARED_LIBRARY)
include $(addsuffix /Android.mk, $(addprefix $(LOCAL_PATH)/, \
modules/gralloc \
))

8
hardware.c
View file

@ -62,7 +62,7 @@ static int load(const char *id,
{
int status;
void *handle;
const struct hw_module_t *hmi;
struct hw_module_t *hmi;
char path[PATH_MAX];
/* Construct the path. */
@ -78,14 +78,14 @@ static int load(const char *id,
handle = dlopen(path, RTLD_NOW);
if (handle == NULL) {
char const *err_str = dlerror();
LOGW("load: module=%s error=%s", path, err_str);
//LOGW("load: module=%s error=%s", path, err_str);
status = -EINVAL;
goto done;
}
/* Get the address of the struct hal_module_info. */
const char *sym = HAL_MODULE_INFO_SYM_AS_STR;
hmi = (const struct hw_module_t *)dlsym(handle, sym);
hmi = (struct hw_module_t *)dlsym(handle, sym);
if (hmi == NULL) {
char const *err_str = dlerror();
LOGE("load: couldn't find symbol %s", sym);
@ -99,6 +99,8 @@ static int load(const char *id,
status = -EINVAL;
goto done;
}
hmi->dso = handle;
/* success */
status = 0;

284
include/hardware/gralloc.h Normal file
View file

@ -0,0 +1,284 @@
/*
* 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.
*/
#ifndef ANDROID_GRALLOC_INTERFACE_H
#define ANDROID_GRALLOC_INTERFACE_H
#include <cutils/native_handle.h>
#include <hardware/hardware.h>
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>
__BEGIN_DECLS
/**
* The id of this module
*/
#define GRALLOC_HARDWARE_MODULE_ID "gralloc"
/**
* Name of the graphics device to open
*/
#define GRALLOC_HARDWARE_FB0 "fb0"
#define GRALLOC_HARDWARE_GPU0 "gpu0"
enum {
/* buffer is never read in software */
GRALLOC_USAGE_SW_READ_NEVER = 0x00000001,
/* buffer is rarely read in software */
GRALLOC_USAGE_SW_READ_RARELY = 0x00000002,
/* buffer is often read in software */
GRALLOC_USAGE_SW_READ_OFTEN = 0x00000003,
/* mask for the software read values */
GRALLOC_USAGE_SW_READ_MASK = 0x0000000F,
/* buffer is never written in software */
GRALLOC_USAGE_SW_WRITE_NEVER = 0x00000010,
/* buffer is never written in software */
GRALLOC_USAGE_SW_WRITE_RARELY = 0x00000020,
/* buffer is never written in software */
GRALLOC_USAGE_SW_WRITE_OFTEN = 0x00000030,
/* mask for the software write values */
GRALLOC_USAGE_SW_WRITE_MASK = 0x000000F0,
/* buffer will be used as an OpenGL ES texture */
GRALLOC_USAGE_HW_TEXTURE = 0x00000100,
/* buffer will be used as an OpenGL ES render target */
GRALLOC_USAGE_HW_RENDER = 0x00000200,
/* buffer will be used by the 2D hardware blitter */
GRALLOC_USAGE_HW_2D = 0x00000C00,
/* buffer will be used with the framebuffer device */
GRALLOC_USAGE_HW_FB = 0x00001000,
/* mask for the software usage bit-mask */
GRALLOC_USAGE_HW_MASK = 0x00001F00,
};
enum {
/* the framebuffer is mapped in memory */
FRAMEBUFFER_RESERVED0 = 0x00000001,
FRAMEBUFFER_FLAG_MAPPED = 0x00000002,
};
/*****************************************************************************/
typedef const native_handle* buffer_handle_t;
/**
* Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
* and the fields of this data structure must begin with hw_module_t
* followed by module specific information.
*/
struct gralloc_module_t {
struct hw_module_t common;
/*
* The (*map)() method maps the buffer in the caller's address space
* if this operation is allowed (see below).
* Mapped buffers are reference-counted in a given process, that is,
* if a the buffer is already mapped, this function must return the
* same address and the internal reference counter is incremented.
*
* Returns 0 on success or -errno on error.
*/
int (*map)(struct gralloc_module_t const* module,
buffer_handle_t handle, void** vaddr);
/*
* The (*unmap)() method, unmaps the buffer from the caller's address
* space, if the buffer has been mapped more than once,
* the (*unmap)() needs to be called the same number of time before
* the buffer is actually unmapped.
*
* Returns 0 on success or -errno on error.
*/
int (*unmap)(struct gralloc_module_t const* module, buffer_handle_t handle);
/*
* The (*lock)() method is called before a buffer is accessed for the
* specified usage. This call may block, for instance if the h/w needs
* to finish rendering or if CPU caches need to be synchronized.
*
* The caller promises to modify ALL PIXELS and ONLY THE PIXELS in the area
* specified by (l,t,w,h).
*
* The content of the buffer outside of the specified area is NOT modified
* by this call.
*
*/
int (*lock)(struct gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h);
/*
* The (*unlock)() method must be called after all changes to the buffer
* are completed.
*/
int (*unlock)(struct gralloc_module_t const* module,
buffer_handle_t handle);
};
/*****************************************************************************/
/**
* Every device data structure must begin with hw_device_t
* followed by module specific public methods and attributes.
*/
struct alloc_device_t {
struct hw_device_t common;
/*
* (*alloc)() Allocates a buffer in graphic memory with the requested
* parameters and returns a buffer_handle_t and the stride in pixels to
* allow the implementation to satisfy hardware constraints on the width
* of a pixmap (eg: it may have to be multiple of 8 pixels).
* The CALLER TAKES OWNERSHIP of the buffer_handle_t.
*
* Returns 0 on success or -errno on error.
*/
int (*alloc)(struct alloc_device_t* dev,
int w, int h, int format, int usage,
buffer_handle_t* handle, int* stride);
/*
* (*free)() Frees a previously allocated buffer.
* Behavior is undefined if the buffer is still mapped in any process,
* but shall not result in termination of the program or security breaches
* (allowing a process to get access to another process' buffers).
* THIS FUNCTION TAKES OWNERSHIP of the buffer_handle_t which becomes
* invalid after the call.
*
* Returns 0 on success or -errno on error.
*/
int (*free)(struct alloc_device_t* dev,
buffer_handle_t handle);
};
struct framebuffer_device_t {
struct hw_device_t common;
/* flags describing some attributes of the framebuffer */
const uint32_t flags;
/* dimensions of the framebuffer in pixels */
const uint32_t width;
const uint32_t height;
/* frambuffer stride in pixels */
const int stride;
/* framebuffer pixel format */
const int format;
/* resolution of the framebuffer's display panel in pixel per inch*/
const float xdpi;
const float ydpi;
/* framebuffer's display panel refresh rate in frames per second */
const float fps;
/* min swap interval supported by this framebuffer */
const int minSwapInterval;
/* max swap interval supported by this framebuffer */
const int maxSwapInterval;
int reserved[8];
/*
* requests a specific swap-interval (same definition than EGL)
*
* Returns 0 on success or -errno on error.
*/
int (*setSwapInterval)(struct framebuffer_device_t* window,
int interval);
/*
* sets a rectangle evaluated during (*post)() specifying which area
* of the buffer passed in (*post)() needs to be posted.
*
* return -EINVAL if width or height <=0, or if left or top < 0
*/
int (*setUpdateRect)(struct framebuffer_device_t* window,
int left, int top, int width, int height);
/*
* Post <buffer> to the display (display it on the screen)
* The buffer must have been allocated with the
* GRALLOC_USAGE_HW_FB usage flag.
* buffer must be the same width and height as the display and must NOT
* be locked.
*
* The buffer is shown during the next VSYNC.
*
* If the same buffer is posted again (possibly after some other buffer),
* post() will block until the the first post is completed.
*
* Internally, post() is expected to lock the buffer so that a
* subsequent call to gralloc_module_t::(*lock)() with USAGE_RENDER or
* USAGE_*_WRITE will block until it is safe; that is typically once this
* buffer is shown and another buffer has been posted.
*
* Returns 0 on success or -errno on error.
*/
int (*post)(struct framebuffer_device_t* dev, buffer_handle_t buffer);
void* reserved_proc[8];
};
/** convenience API for opening and closing a supported device */
static inline int gralloc_open(const struct hw_module_t* module,
struct alloc_device_t** device) {
return module->methods->open(module,
GRALLOC_HARDWARE_GPU0, (struct hw_device_t**)device);
}
static inline int gralloc_close(struct alloc_device_t* device) {
return device->common.close(&device->common);
}
static inline int framebuffer_open(const struct hw_module_t* module,
struct framebuffer_device_t** device) {
return module->methods->open(module,
GRALLOC_HARDWARE_FB0, (struct hw_device_t**)device);
}
static inline int framebuffer_close(struct framebuffer_device_t* device) {
return device->common.close(&device->common);
}
__END_DECLS
#endif // ANDROID_ALLOC_INTERFACE_H

18
include/hardware/hardware.h
View file

@ -20,13 +20,18 @@
#include <stdint.h>
#include <sys/cdefs.h>
#include <cutils/native_handle.h>
__BEGIN_DECLS
/*
* Value for the hw_module_t.tag field
*/
#define HARDWARE_MODULE_TAG 'HWMT'
#define HARDWARE_DEVICE_TAG 'HWDT'
#define MAKE_TAG_CONSTANT(A,B,C,D) (((A) << 24) | ((B) << 16) | ((C) << 8) | (D))
#define HARDWARE_MODULE_TAG MAKE_TAG_CONSTANT('H', 'W', 'M', 'T')
#define HARDWARE_DEVICE_TAG MAKE_TAG_CONSTANT('H', 'W', 'D', 'T')
struct hw_module_t;
struct hw_module_methods_t;
@ -58,9 +63,12 @@ struct hw_module_t {
/** Modules methods */
struct hw_module_methods_t* methods;
/** module's dso */
void* dso;
/** padding to 128 bytes, reserved for future use */
uint32_t reserved[32-6];
uint32_t reserved[32-7];
};
struct hw_module_methods_t {
@ -91,7 +99,7 @@ struct hw_device_t {
};
/**
* Name of the hal_module_info
* Name of the hal_module_info
*/
#define HAL_MODULE_INFO_SYM HMI

27
modules/gralloc/Android.mk Normal file
View file

@ -0,0 +1,27 @@
# 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.
LOCAL_PATH := $(call my-dir)
# HAL module implemenation, not prelinked and stored in
# hw/<OVERLAY_HARDWARE_MODULE_ID>.<ro.product.board>.so
include $(CLEAR_VARS)
LOCAL_PRELINK_MODULE := false
LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
LOCAL_SHARED_LIBRARIES := liblog libcutils
LOCAL_SRC_FILES := gralloc.cpp mapper.cpp framebuffer.cpp
LOCAL_MODULE := gralloc.default
LOCAL_CFLAGS:= -DLOG_TAG=\"gralloc\"
include $(BUILD_SHARED_LIBRARY)

356
modules/gralloc/framebuffer.cpp Normal file
View file

@ -0,0 +1,356 @@
/*
* 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 <cutils/log.h>
#include <cutils/atomic.h>
#if HAVE_ANDROID_OS
#include <linux/fb.h>
#endif
#include "gralloc_priv.h"
/*****************************************************************************/
#define NUM_BUFFERS 2
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 (m->currentBuffer) {
m->base.unlock(&m->base, m->currentBuffer);
m->currentBuffer = 0;
}
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
m->base.lock(&m->base, buffer,
private_module_t::PRIV_USAGE_LOCKED_FOR_POST,
0, 0, m->info.xres, m->info.yres);
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
m->base.lock(&m->base, buffer,
private_module_t::PRIV_USAGE_LOCKED_FOR_POST,
0, 0, m->info.xres, m->info.yres);
memcpy((void*)m->framebuffer->base, (void*)hnd->base,
m->finfo.line_length * m->info.yres);
m->base.unlock(&m->base, buffer);
}
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;
/*
* Explicitly request 5/6/5
*/
info.bits_per_pixel = 16;
info.red.offset = 11;
info.red.length = 5;
info.green.offset = 5;
info.green.length = 6;
info.blue.offset = 0;
info.blue.length = 5;
info.transp.offset = 0;
info.transp.length = 0;
/*
* 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;
int refreshRate = 1000000000000000LLU /
(
uint64_t( info.upper_margin + info.lower_margin + info.yres )
* ( info.left_margin + info.right_margin + info.xres )
* info.pixclock
);
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,
private_handle_t::PRIV_FLAGS_USES_PMEM);
module->numBuffers = info.yres_virtual / info.yres;
module->bufferMask = 0;
void* vaddr;
module->base.map(&module->base, module->framebuffer, &vaddr);
memset(vaddr, 0, fbSize);
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.setUpdateRect = fb_setUpdateRect;
dev->device.post = fb_post;
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);
const_cast<uint32_t&>(dev->device.flags) = FRAMEBUFFER_FLAG_MAPPED;
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) = HAL_PIXEL_FORMAT_RGB_565;
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) = 1;
const_cast<int&>(dev->device.maxSwapInterval) = 1;
*device = &dev->device.common;
}
}
return status;
}

320
modules/gralloc/gralloc.cpp Normal file
View file

@ -0,0 +1,320 @@
/*
* 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 <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <cutils/ashmem.h>
#include <cutils/log.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include <fcntl.h>
#include <errno.h>
#include <pthread.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include "gralloc_priv.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_map(gralloc_module_t const* module,
buffer_handle_t handle, void** vaddr);
extern int gralloc_unmap(gralloc_module_t const* module,
buffer_handle_t handle);
extern int gralloc_lock(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h);
extern int gralloc_unlock(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
},
map: gralloc_map,
unmap: gralloc_unmap,
lock: gralloc_lock,
unlock: gralloc_unlock,
},
framebuffer: 0,
flags: 0,
numBuffers: 0,
bufferMask: 0,
lock: PTHREAD_MUTEX_INITIALIZER,
currentBuffer: 0
};
/*****************************************************************************/
/*
* This function creates a buffer_handle_t initialized with the given fd.
* the offset passed in parameter is used to mmap() this fd later at this
* offset.
*/
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
int err = mapFrameBufferLocked(m);
if (err < 0) {
return err;
}
}
if (m->framebuffer->base == 0) {
void *vaddr;
m->base.map(&m->base, m->framebuffer, &vaddr);
}
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_USES_PMEM |
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;
*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)
{
size = roundUpToPageSize(size);
int flags = 0;
if (usage & GRALLOC_USAGE_HW_2D) {
flags |= private_handle_t::PRIV_FLAGS_USES_PMEM;
}
int fd;
if ((flags & private_handle_t::PRIV_FLAGS_USES_PMEM) == 0) {
fd = ashmem_create_region("Buffer", size);
} else {
fd = open("/dev/pmem", O_RDWR, 0);
// Note: Currently pmem get sized when it is mmaped.
// This means that just doing the open doesn't actually allocate
// anything. We basically need to do an implicit "mmap"
// (under the hood) for pmem regions. However, the current
// code will work okay for now thanks to the reference-counting.
}
if (fd < 0) {
return -errno;
}
private_handle_t* hnd = new private_handle_t(fd, size, flags);
*pHandle = hnd;
return 0;
}
/*****************************************************************************/
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;
int align = 4;
int bpp = 0;
switch (format) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
bpp = 4;
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_t size = bpr * h;
size_t 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);
}
if (hnd->base) {
LOGW("Freeing mapped handle %p", hnd);
gralloc_unmap((gralloc_module_t*) dev->common.module, handle);
}
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
*/
private_module_t* m = reinterpret_cast<private_module_t*>(dev->module);
pthread_mutex_lock(&m->lock);
if (m->framebuffer) {
m->base.unmap(&m->base, m->framebuffer);
}
pthread_mutex_unlock(&m->lock);
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;
}

209
modules/gralloc/gralloc_priv.h Normal file
View file

@ -0,0 +1,209 @@
/*
* 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.
*/
#ifndef GRALLOC_PRIV_H_
#define GRALLOC_PRIV_H_
#include <stdint.h>
#include <asm/page.h>
#include <limits.h>
#include <sys/cdefs.h>
#include <hardware/gralloc.h>
#include <pthread.h>
#include <cutils/native_handle.h>
#if HAVE_ANDROID_OS
#include <linux/fb.h>
#endif
/*****************************************************************************/
inline size_t roundUpToPageSize(size_t x) {
return (x + (PAGESIZE-1)) & ~(PAGESIZE-1);
}
int mapFrameBufferLocked(struct private_module_t* module);
/*****************************************************************************/
struct private_handle_t;
struct private_module_t {
gralloc_module_t base;
private_handle_t* framebuffer;
uint32_t flags;
uint32_t numBuffers;
uint32_t bufferMask;
pthread_mutex_t lock;
buffer_handle_t currentBuffer;
struct fb_var_screeninfo info;
struct fb_fix_screeninfo finfo;
float xdpi;
float ydpi;
float fps;
enum {
PRIV_USAGE_LOCKED_FOR_POST = 0x80000000
};
};
/*****************************************************************************/
struct private_handle_t : public native_handle
{
enum {
PRIV_FLAGS_FRAMEBUFFER = 0x00000001,
PRIV_FLAGS_USES_PMEM = 0x00000002
};
int fd;
int magic;
int base;
int flags;
int size;
static const int sNumInts = 5;
static const int sNumFds = 1;
static const int sMagic = 0x3141592;
private_handle_t(int fd, int size, int flags) :
fd(fd), magic(sMagic), base(0), flags(flags), size(size) {
version = sizeof(native_handle);
numInts = sNumInts;
numFds = sNumFds;
}
~private_handle_t() {
magic = 0;
}
bool usesPhysicallyContiguousMemory() {
return (flags & PRIV_FLAGS_USES_PMEM) != 0;
}
static int validate(const native_handle* h) {
if (!h || h->version != sizeof(native_handle) ||
h->numInts!=sNumInts || h->numFds!=sNumFds) {
return -EINVAL;
}
const private_handle_t* hnd = (const private_handle_t*)h;
if (hnd->magic != sMagic)
return -EINVAL;
return 0;
}
static private_handle_t* dynamicCast(const native_handle* in) {
if (validate(in) == 0) {
return (private_handle_t*) in;
}
return NULL;
}
};
/*****************************************************************************/
template<typename T>
struct growable_sorted_array_t {
int size;
int count;
T* data;
growable_sorted_array_t() : size(0), count(0), data(0) {
}
growable_sorted_array_t(int initialSize)
: size(initialSize), count(0), data(0)
{
data = new T[initialSize];
}
~growable_sorted_array_t() {
delete[] data;
}
/** Returns true if we found an exact match.
* Argument index is set to the the first index >= key in place.
* Index will be in range 0..count inclusive.
*
*/
bool find(const T& key, int& index) {
return binarySearch(0, count-1, key, index);
}
T* at(int index){
if (index >= 0 && index < count) {
return data + index;
}
return 0;
}
void insert(int index, const T& item) {
if (index >= 0 && index <= count) {
if (count + 1 > size) {
int newSize = size * 2;
if (newSize < count + 1) {
newSize = count + 1;
}
T* newData = new T[newSize];
if (size > 0) {
memcpy(newData, data, sizeof(T) * count);
}
data = newData;
size = newSize;
}
int toMove = count - index;
if (toMove > 0) {
memmove(data + index + 1, data + index, sizeof(T) * toMove);
}
count++;
data[index] = item;
}
}
void remove(int index) {
if (index >= 0 && index < count) {
int toMove = (count - 1) - index;
if (toMove > 0) {
memmove(data + index, data + index + 1, sizeof(T) * toMove);
}
count--;
}
}
/** Return the first index >= key. May be in range first..last+1. */
int binarySearch(int first, int last, const T& key, int& index)
{
while (first <= last) {
int mid = (first + last) / 2;
int cmp = compare(key, data[mid]);
if (cmp > 0) {
first = mid + 1;
} else if (cmp < 0) {
last = mid - 1;
} else {
index = mid;
return true;
}
}
index = first;
return false;
}
};
#endif /* GRALLOC_PRIV_H_ */

231
modules/gralloc/mapper.cpp Normal file
View file

@ -0,0 +1,231 @@
/*
* 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 <errno.h>
#include <pthread.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include "gralloc_priv.h"
/*****************************************************************************/
struct mapped_buffer_t {
intptr_t key;
int size;
int base;
int refCount;
int init(private_handle_t* hnd) {
size = hnd->size;
base = 0;
refCount = 0;
struct stat buf;
int result = 0;
key = intptr_t(hnd);
return result;
}
};
static int compare(const mapped_buffer_t& a, const mapped_buffer_t& b) {
if (a.key < b.key) {
return -1;
}
if (a.key > b.key) {
return 1;
}
return 0;
}
struct mapped_buffers_t {
pthread_mutex_t mutex;
growable_sorted_array_t<mapped_buffer_t> records;
int map(gralloc_module_t const* module,
buffer_handle_t handle,
void** vaddr)
{
private_handle_t* hnd = (private_handle_t*)(handle);
mapped_buffer_t key;
int result = key.init(hnd);
//printRecord(ANDROID_LOG_DEBUG, "map", &key);
if (result) {
return result;
}
mapped_buffer_t* record = 0;
pthread_mutex_lock(&mutex);
// From here to the end of the function we return by jumping to "exit"
// so that we always unlock the mutex.
int index = -1;
if (!records.find(key, index)) {
//LOGD("New item at %d", index);
void* mappedAddress = mmap(0, hnd->size,
PROT_READ|PROT_WRITE, MAP_SHARED, hnd->fd, 0);
if (mappedAddress == MAP_FAILED) {
result = -errno;
//LOGE("map failed %d", result);
goto exit;
}
key.base = intptr_t(mappedAddress);
records.insert(index, key);
record = records.at(index);
} else {
//LOGD("Found existing mapping at index %d", index);
record = records.at(index);
if (record->size != key.size) {
LOGE("Requested a new mapping at the same offset"
"but with a different size");
printRecord(ANDROID_LOG_ERROR, "old", record);
printRecord(ANDROID_LOG_ERROR, "new", &key);
result = -EINVAL;
goto exit;
}
}
record->refCount += 1;
hnd->base = record->base;
*vaddr = (void*) record->base;
exit:
//print();
pthread_mutex_unlock(&mutex);
return result;
}
int unmap(gralloc_module_t const* module,
buffer_handle_t handle)
{
mapped_buffer_t key;
key.init((private_handle_t*) handle);
//printRecord(ANDROID_LOG_DEBUG, "unmap", &key);
int index = -1;
int result = 0;
mapped_buffer_t* record = 0;
pthread_mutex_lock(&mutex);
// From here to the end of the function we return by jumping to "exit"
// so that we always unlock the mutex.
if (!records.find(key, index)) {
// This handle is not currently locked.
//LOGE("Could not find existing mapping near %d", index);
result = -ENOENT;
goto exit;
}
record = records.at(index);
//printRecord(ANDROID_LOG_DEBUG, "record", record);
record->refCount -= 1;
if (record->refCount == 0) {
//LOGD("Unmapping...");
if (munmap((void*)record->base, record->size) < 0) {
result = -errno;
//LOGE("Could not unmap %d", result);
}
records.remove(index);
((private_handle_t*)handle)->base = 0;
}
exit:
//print();
pthread_mutex_unlock(&mutex);
return result;
}
void print() {
char prefix[16];
LOGD("Dumping records: count=%d size=%d", records.count, records.size);
for(int i=0; i<records.count ; i++) {
sprintf(prefix, "%3d", i);
printRecord(ANDROID_LOG_DEBUG, prefix, records.at(i));
}
}
void printRecord(int level, const char* what, mapped_buffer_t* record) {
LOG_PRI(level, LOG_TAG,
"%s: key=0x%08x, size=0x%08x, base=0x%08x refCount=%d",
what, int(record->key), record->size,
record->base, record->refCount);
}
};
static mapped_buffers_t sMappedBuffers = {
mutex: PTHREAD_MUTEX_INITIALIZER
};
/*****************************************************************************/
int gralloc_map(gralloc_module_t const* module,
buffer_handle_t handle,
void** vaddr)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)(handle);
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
const private_module_t* m =
reinterpret_cast<const private_module_t*>(module);
handle = m->framebuffer;
}
int err = sMappedBuffers.map(module, handle, vaddr);
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
*vaddr = (void*)hnd->base;
}
return err;
}
int gralloc_unmap(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)(handle);
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
const private_module_t* m =
reinterpret_cast<const private_module_t*>(module);
handle = m->framebuffer;
}
return sMappedBuffers.unmap(module, handle);
}
int gralloc_lock(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h)
{
// FIXME: gralloc_lock() needs implementation
return 0;
}
int gralloc_unlock(gralloc_module_t const* module,
buffer_handle_t handle)
{
// FIXME: gralloc_unlock() needs implementation
return 0;
}

2
modules/overlay/overlay.cpp
View file

@ -44,7 +44,7 @@ static struct hw_module_methods_t overlay_module_methods = {
open: overlay_device_open
};
const struct overlay_module_t HAL_MODULE_INFO_SYM = {
struct overlay_module_t HAL_MODULE_INFO_SYM = {
common: {
tag: HARDWARE_MODULE_TAG,
version_major: 1,