libhwjpeg \
libhwc \
libcamera2 \
- mobicore
+ mobicore \
+ gralloc
BOARD_USE_V4L2 := true
BOARD_USE_V4L2_ION := true
--- /dev/null
+# 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 stored in
+# hw/<OVERLAY_HARDWARE_MODULE_ID>.<ro.product.board>.so
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR_SHARED_LIBRARIES)/hw
+LOCAL_SHARED_LIBRARIES := liblog libcutils libion libutils
+
+LOCAL_C_INCLUDES := hardware/samsung_slsi/exynos5/include
+
+LOCAL_SRC_FILES := \
+ gralloc.cpp \
+ framebuffer.cpp \
+ mapper.cpp
+
+LOCAL_MODULE := gralloc.exynos5
+LOCAL_CFLAGS:= -DLOG_TAG=\"gralloc\"
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_OWNER := samsung_arm
+
+include $(BUILD_SHARED_LIBRARY)
--- /dev/null
+/*
+ * 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 <utils/Vector.h>
+
+#include <cutils/log.h>
+#include <cutils/atomic.h>
+
+#if HAVE_ANDROID_OS
+#include <linux/fb.h>
+#endif
+
+#include "gralloc_priv.h"
+#include "gr.h"
+
+/*****************************************************************************/
+
+// numbers of buffers for page flipping
+#define NUM_BUFFERS 2
+
+struct hwc_callback_entry
+{
+ void (*callback)(void *, private_handle_t *);
+ void *data;
+};
+
+typedef android::Vector<struct hwc_callback_entry> hwc_callback_queue_t;
+
+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_post(struct framebuffer_device_t* dev, buffer_handle_t buffer)
+{
+ if (private_handle_t::validate(buffer) < 0)
+ return -EINVAL;
+
+ private_handle_t const* hnd = reinterpret_cast<private_handle_t const*>(buffer);
+ private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module);
+
+ hwc_callback_queue_t *queue = reinterpret_cast<hwc_callback_queue_t *>(m->queue);
+ pthread_mutex_lock(&m->queue_lock);
+ if(queue->isEmpty())
+ pthread_mutex_unlock(&m->queue_lock);
+ else {
+ private_handle_t *hnd = private_handle_t::dynamicCast(buffer);
+ struct hwc_callback_entry entry = queue->top();
+ queue->pop();
+ pthread_mutex_unlock(&m->queue_lock);
+ entry.callback(entry.data, hnd);
+ }
+
+ return 0;
+}
+
+/*****************************************************************************/
+
+static int fb_close(struct hw_device_t *dev)
+{
+ fb_context_t* ctx = (fb_context_t*)dev;
+ if (ctx) {
+ free(ctx);
+ }
+ return 0;
+}
+
+int init_fb(struct private_module_t* module)
+{
+ char const * const device_template[] = {
+ "/dev/graphics/fb%u",
+ "/dev/fb%u",
+ NULL
+ };
+
+ int fd = -1;
+ int i = 0;
+ char name[64];
+
+ fd = open("/dev/graphics/fb0", O_RDWR);
+ if (fd < 0) {
+ ALOGE("/dev/graphics/fb0 Open fail");
+ return -errno;
+ }
+
+ struct fb_fix_screeninfo finfo;
+ if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) {
+ ALOGE("Fail to get FB Screen Info");
+ return -errno;
+ }
+
+ struct fb_var_screeninfo info;
+ if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) {
+ ALOGE("First, Fail to get FB VScreen Info");
+ 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)
+ refreshRate = 60*1000; /* 60 Hz */
+
+ float xdpi = (info.xres * 25.4f) / info.width;
+ float ydpi = (info.yres * 25.4f) / info.height;
+ float fps = refreshRate / 1000.0f;
+
+ ALOGI("using (id=%s)\n"
+ "xres = %d px\n"
+ "yres = %d px\n"
+ "width = %d mm (%f dpi)\n"
+ "height = %d mm (%f dpi)\n"
+ "refresh rate = %.2f Hz\n",
+ finfo.id, info.xres, info.yres, info.width, xdpi, info.height, ydpi,
+ fps);
+
+ module->xres = 2560;
+ module->yres = 1600;
+ module->line_length = 2560;
+ module->xdpi = xdpi;
+ module->ydpi = ydpi;
+ module->fps = fps;
+
+ return 0;
+}
+
+int fb_device_open(hw_module_t const* module, const char* name,
+ hw_device_t** device)
+{
+ int status = -EINVAL;
+#ifdef GRALLOC_16_BITS
+ int bits_per_pixel = 16;
+ int format = HAL_PIXEL_FORMAT_RGB_565;
+#else
+ int bits_per_pixel = 32;
+ int format = HAL_PIXEL_FORMAT_RGBA_8888;
+#endif
+
+ alloc_device_t* gralloc_device;
+ status = gralloc_open(module, &gralloc_device);
+ if (status < 0) {
+ ALOGE("Fail to Open gralloc device");
+ return status;
+ }
+
+ framebuffer_device_t *dev = (framebuffer_device_t *)malloc(sizeof(framebuffer_device_t));
+ if (dev == NULL) {
+ ALOGE("Failed to allocate memory for dev");
+ gralloc_close(gralloc_device);
+ return status;
+ }
+
+ private_module_t* m = (private_module_t*)module;
+ status = init_fb(m);
+ if (status < 0) {
+ ALOGE("Fail to init framebuffer");
+ free(dev);
+ gralloc_close(gralloc_device);
+ return status;
+ }
+
+ /* initialize our state here */
+ memset(dev, 0, sizeof(*dev));
+
+ /* initialize the procs */
+ dev->common.tag = HARDWARE_DEVICE_TAG;
+ dev->common.version = 0;
+ dev->common.module = const_cast<hw_module_t*>(module);
+ dev->common.close = fb_close;
+ dev->setSwapInterval = 0;
+ dev->post = fb_post;
+ dev->setUpdateRect = 0;
+ dev->compositionComplete = 0;
+ m->queue = new hwc_callback_queue_t;
+ pthread_mutex_init(&m->queue_lock, NULL);
+
+ int stride = m->line_length / (bits_per_pixel >> 3);
+ const_cast<uint32_t&>(dev->flags) = 0;
+ const_cast<uint32_t&>(dev->width) = m->xres;
+ const_cast<uint32_t&>(dev->height) = m->yres;
+ const_cast<int&>(dev->stride) = stride;
+ const_cast<int&>(dev->format) = format;
+ const_cast<float&>(dev->xdpi) = m->xdpi;
+ const_cast<float&>(dev->ydpi) = m->ydpi;
+ const_cast<float&>(dev->fps) = m->fps;
+ const_cast<int&>(dev->minSwapInterval) = 1;
+ const_cast<int&>(dev->maxSwapInterval) = 1;
+ *device = &dev->common;
+ status = 0;
+
+ return status;
+}
--- /dev/null
+/*
+ * 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 GR_H_
+#define GR_H_
+
+#include <stdint.h>
+#include <limits.h>
+#include <sys/cdefs.h>
+#include <hardware/gralloc.h>
+#include <pthread.h>
+#include <errno.h>
+
+#include <cutils/native_handle.h>
+
+/*****************************************************************************/
+
+struct private_module_t;
+struct private_handle_t;
+
+int grallocMap(gralloc_module_t const* module, private_handle_t *hnd);
+int grallocUnmap(gralloc_module_t const* module, private_handle_t *hnd);
+
+#endif /* GR_H_ */
--- /dev/null
+/*
+ * 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.
+ */
+
+#ifdef HAVE_ANDROID_OS // just want PAGE_SIZE define
+# include <asm/page.h>
+#else
+# include <sys/user.h>
+#endif
+#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 <ion/ion.h>
+#include <linux/ion.h>
+#include <cutils/log.h>
+#include <cutils/atomic.h>
+
+#include <hardware/hardware.h>
+#include <hardware/gralloc.h>
+
+#include "gralloc_priv.h"
+#include "exynos_format.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,
+ ionfd: -1,
+};
+
+/*****************************************************************************/
+
+#define ALIGN(x, a) (((x) + (a - 1)) & ~(a - 1))
+
+static int gralloc_alloc_rgb(int ionfd, int w, int h, int format, int flags,
+ private_handle_t **hnd, int *stride)
+{
+ size_t size, bpr;
+ int bpp = 0, fd, err;
+ 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:
+ case HAL_PIXEL_FORMAT_RAW_SENSOR:
+ bpp = 2;
+ break;
+ case HAL_PIXEL_FORMAT_BLOB:
+ bpp = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ bpr = ALIGN(w*bpp, 16);
+ size = bpr * h;
+ *stride = bpr / bpp;
+ size = ALIGN(size, PAGE_SIZE);
+
+ err = ion_alloc_fd(ionfd, size, 0, 1 << ION_HEAP_TYPE_SYSTEM, flags, &fd);
+ *hnd = new private_handle_t(fd, size, 0, w, h, format, *stride);
+
+ return err;
+}
+
+static int gralloc_alloc_yuv(int ionfd, int w, int h, int format, int flags,
+ private_handle_t **hnd, int *stride)
+{
+ size_t luma_size, chroma_size;
+ int err, planes, fd, fd1, fd2 = 0;
+ *stride = ALIGN(w, 16);
+
+ switch (format) {
+ ALOGE("invalid yuv format %d\n", format);
+ case HAL_PIXEL_FORMAT_YV12:
+ {
+ size_t vstride = ALIGN(h, 16);
+ luma_size = vstride * *stride;
+ chroma_size = (vstride / 2) * ALIGN(*stride / 2, 16);
+ planes = 3;
+ break;
+ }
+ case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+ case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+ case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
+ {
+ size_t luma_vstride = ALIGN(h, 32);
+ size_t chroma_vstride = ALIGN(h / 2, 32);
+ luma_size = luma_vstride * *stride;
+ chroma_size = chroma_vstride * *stride;
+ planes = 2;
+ break;
+ }
+ default:
+ ALOGE("invalid yuv format %d\n", format);
+ return -EINVAL;
+ }
+
+ err = ion_alloc_fd(ionfd, luma_size, 0, 1 << ION_HEAP_TYPE_SYSTEM, flags,
+ &fd);
+ if (err)
+ return err;
+ err = ion_alloc_fd(ionfd, chroma_size, 0, 1 << ION_HEAP_TYPE_SYSTEM, flags,
+ &fd1);
+ if (err)
+ goto err1;
+ if (planes == 3) {
+ err = ion_alloc_fd(ionfd, chroma_size, 0, 1 << ION_HEAP_TYPE_SYSTEM,
+ flags, &fd2);
+ if (err)
+ goto err2;
+ }
+
+ *hnd = new private_handle_t(fd, fd1, fd2, luma_size, 0, w, h, format,
+ *stride);
+ return err;
+
+err2:
+ close(fd1);
+err1:
+ close(fd);
+ return err;
+}
+
+static int gralloc_alloc(alloc_device_t* dev,
+ int w, int h, int format, int usage,
+ buffer_handle_t* pHandle, int* pStride)
+{
+ int stride;
+ int err;
+ int flags = 0;
+ private_handle_t *hnd;
+
+ if (!pHandle || !pStride)
+ return -EINVAL;
+
+ if( (usage & GRALLOC_USAGE_SW_READ_MASK) == GRALLOC_USAGE_SW_READ_OFTEN )
+ flags = ION_FLAG_CACHED;
+
+ private_module_t* m = reinterpret_cast<private_module_t*>
+ (dev->common.module);
+ gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>
+ (dev->common.module);
+
+ err = gralloc_alloc_rgb(m->ionfd, w, h, format, flags, &hnd, &stride);
+ if (err)
+ err = gralloc_alloc_yuv(m->ionfd, w, h, format, flags, &hnd, &stride);
+ if (err)
+ return err;
+
+ err = grallocMap(module, hnd);
+
+ if (err != 0)
+ goto err;
+
+ *pHandle = hnd;
+ *pStride = stride;
+ return 0;
+err:
+ close(hnd->fd);
+ if (hnd->fd1 > 0)
+ close(hnd->fd1);
+ if (hnd->fd2 > 0)
+ close(hnd->fd2);
+ return err;
+}
+
+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);
+ gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>(
+ dev->common.module);
+
+ grallocUnmap(module, const_cast<private_handle_t*>(hnd));
+ close(hnd->fd);
+ if (hnd->fd1 > 0)
+ close(hnd->fd1);
+ if (hnd->fd2 > 0)
+ close(hnd->fd2);
+
+ 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;
+
+ private_module_t *p = reinterpret_cast<private_module_t*>(dev->device.common.module);
+ p->ionfd = ion_open();
+
+ *device = &dev->device.common;
+ status = 0;
+ } else {
+ status = fb_device_open(module, name, device);
+ }
+ return status;
+}
--- /dev/null
+/*
+ * 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 <unistd.h>
+#include <string.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"
+
+#include <ion/ion.h>
+#include <linux/ion.h>
+
+/*****************************************************************************/
+
+static int gralloc_map(gralloc_module_t const* module, buffer_handle_t handle)
+{
+ private_handle_t* hnd = (private_handle_t*)handle;
+
+ void* mappedAddress = mmap(0, hnd->size, PROT_READ|PROT_WRITE, MAP_SHARED,
+ hnd->fd, 0);
+ if (mappedAddress == MAP_FAILED) {
+ ALOGE("%s: could not mmap %s", __func__, strerror(errno));
+ return -errno;
+ }
+ ALOGV("%s: base %p %d %d %d %d\n", __func__, mappedAddress, hnd->size,
+ hnd->width, hnd->height, hnd->stride);
+ hnd->base = mappedAddress;
+ return 0;
+}
+
+static int gralloc_unmap(gralloc_module_t const* module, buffer_handle_t handle)
+{
+ private_handle_t* hnd = (private_handle_t*)handle;
+
+ if (!hnd->base)
+ return 0;
+
+ if (munmap(hnd->base, hnd->size) < 0) {
+ ALOGE("%s :could not unmap %s %p %d", __func__, strerror(errno),
+ hnd->base, hnd->size);
+ }
+ ALOGV("%s: base %p %d %d %d %d\n", __func__, hnd->base, hnd->size,
+ hnd->width, hnd->height, hnd->stride);
+ hnd->base = 0;
+ return 0;
+}
+
+/*****************************************************************************/
+
+int grallocMap(gralloc_module_t const* module, private_handle_t *hnd)
+{
+ return gralloc_map(module, hnd);
+}
+
+int grallocUnmap(gralloc_module_t const* module, private_handle_t *hnd)
+{
+ return gralloc_unmap(module, hnd);
+}
+
+static pthread_mutex_t sMapLock = PTHREAD_MUTEX_INITIALIZER;
+
+/*****************************************************************************/
+
+int gralloc_register_buffer(gralloc_module_t const* module,
+ buffer_handle_t handle)
+{
+ int err;
+ if (private_handle_t::validate(handle) < 0)
+ return -EINVAL;
+
+ err = gralloc_map(module, handle);
+
+ private_handle_t* hnd = (private_handle_t*)handle;
+ ALOGV("%s: base %p %d %d %d %d\n", __func__, hnd->base, hnd->size,
+ hnd->width, hnd->height, hnd->stride);
+ return err;
+}
+
+int gralloc_unregister_buffer(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;
+ ALOGV("%s: base %p %d %d %d %d\n", __func__, hnd->base, hnd->size,
+ hnd->width, hnd->height, hnd->stride);
+
+ gralloc_unmap(module, handle);
+
+ return 0;
+}
+
+int gralloc_lock(gralloc_module_t const* module,
+ buffer_handle_t handle, int usage,
+ int l, int t, int w, int h,
+ void** vaddr)
+{
+ // this is called when a buffer is being locked for software
+ // access. in thin implementation we have nothing to do since
+ // not synchronization with the h/w is needed.
+ // typically this is used to wait for the h/w to finish with
+ // this buffer if relevant. the data cache may need to be
+ // flushed or invalidated depending on the usage bits and the
+ // hardware.
+
+ if (private_handle_t::validate(handle) < 0)
+ return -EINVAL;
+
+ private_handle_t* hnd = (private_handle_t*)handle;
+ *vaddr = (void*)hnd->base;
+ return 0;
+}
+
+int gralloc_unlock(gralloc_module_t const* module,
+ buffer_handle_t handle)
+{
+ // we're done with a software buffer. nothing to do in this
+ // implementation. typically this is used to flush the data cache.
+
+ if (private_handle_t::validate(handle) < 0)
+ return -EINVAL;
+ return 0;
+}
projects / GitHub / LineageOS / android_hardware_samsung_slsi_exynos5.git / commitdiff