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-rw-r--r--Android.mk5
-rw-r--r--hardware.c8
-rw-r--r--include/hardware/gralloc.h284
-rw-r--r--include/hardware/hardware.h18
-rw-r--r--modules/gralloc/Android.mk27
-rw-r--r--modules/gralloc/framebuffer.cpp356
-rw-r--r--modules/gralloc/gralloc.cpp320
-rw-r--r--modules/gralloc/gralloc_priv.h209
-rw-r--r--modules/gralloc/mapper.cpp231
-rw-r--r--modules/overlay/overlay.cpp2
10 files changed, 1451 insertions, 9 deletions
diff --git a/Android.mk b/Android.mk
index b2e9caf..a35de91 100644
--- a/Android.mk
+++ b/Android.mk
@@ -33,3 +33,8 @@ endif
LOCAL_MODULE:= libhardware
include $(BUILD_SHARED_LIBRARY)
+
+include $(addsuffix /Android.mk, $(addprefix $(LOCAL_PATH)/, \
+ modules/gralloc \
+ ))
+ \ No newline at end of file
diff --git a/hardware.c b/hardware.c
index cc68602..ffc9a25 100644
--- a/hardware.c
+++ b/hardware.c
@@ -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;
diff --git a/include/hardware/gralloc.h b/include/hardware/gralloc.h
new file mode 100644
index 0000000..c473de0
--- /dev/null
+++ b/include/hardware/gralloc.h
@@ -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
diff --git a/include/hardware/hardware.h b/include/hardware/hardware.h
index 5325744..c8dc6f6 100644
--- a/include/hardware/hardware.h
+++ b/include/hardware/hardware.h
@@ -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
diff --git a/modules/gralloc/Android.mk b/modules/gralloc/Android.mk
new file mode 100644
index 0000000..1603f2d
--- /dev/null
+++ b/modules/gralloc/Android.mk
@@ -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)
diff --git a/modules/gralloc/framebuffer.cpp b/modules/gralloc/framebuffer.cpp
new file mode 100644
index 0000000..05b9418
--- /dev/null
+++ b/modules/gralloc/framebuffer.cpp
@@ -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;
+}
diff --git a/modules/gralloc/gralloc.cpp b/modules/gralloc/gralloc.cpp
new file mode 100644
index 0000000..67febd8
--- /dev/null
+++ b/modules/gralloc/gralloc.cpp
@@ -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;
+}
diff --git a/modules/gralloc/gralloc_priv.h b/modules/gralloc/gralloc_priv.h
new file mode 100644
index 0000000..a6fa69a
--- /dev/null
+++ b/modules/gralloc/gralloc_priv.h
@@ -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_ */
diff --git a/modules/gralloc/mapper.cpp b/modules/gralloc/mapper.cpp
new file mode 100644
index 0000000..a5f52ed
--- /dev/null
+++ b/modules/gralloc/mapper.cpp
@@ -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;
+}
diff --git a/modules/overlay/overlay.cpp b/modules/overlay/overlay.cpp
index 0246b5b..a91df58 100644
--- a/modules/overlay/overlay.cpp
+++ b/modules/overlay/overlay.cpp
@@ -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,
generated by cgit v1.1 at 2024-05-17 20:38:21 +0000