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/*
* Copyright (C) 2016 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/hashmap.h>
#include <log/log.h>
#include <cutils/atomic.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include <system/graphics.h>
#include "gralloc_vsoc_priv.h"
#include "region_registry.h"
#define DEBUG_REFERENCES 1
#define DEBUG_MAX_LOCK_LEVEL 20
/*****************************************************************************/
int gralloc_register_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;
if (reference_region(__FUNCTION__, hnd)) {
return 0;
} else {
return -EIO;
}
}
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;
return unreference_region("gralloc_unregister_buffer", hnd);
}
int gralloc_lock(
gralloc_module_t const* /*module*/, buffer_handle_t handle, int /*usage*/,
int /*l*/, int /*t*/, int /*w*/, int /*h*/,
void** vaddr) {
if (private_handle_t::validate(handle) < 0) {
return -EINVAL;
}
if (!vaddr) {
return -EINVAL;
}
private_handle_t* hnd = (private_handle_t*)handle;
#if DEBUG_REFERENCES
if (hnd->lock_level > DEBUG_MAX_LOCK_LEVEL) {
LOG_FATAL("%s: unbalanced lock detected. lock level = %d",
__FUNCTION__, hnd->lock_level);
}
++hnd->lock_level;
#endif
void* base = reference_region("gralloc_lock", hnd);
*vaddr = reinterpret_cast<unsigned char*>(base)
+ hnd->frame_offset;
return 0;
}
int gralloc_unlock(
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 DEBUG_REFERENCES
if (hnd->lock_level <= 0) {
LOG_FATAL("%s unbalanced unlock detected. lock level = %d",
__FUNCTION__, hnd->lock_level);
}
--hnd->lock_level;
#endif
unreference_region("gralloc_unlock", hnd);
return 0;
}
int gralloc_lock_ycbcr(
gralloc_module_t const* /*module*/, buffer_handle_t handle, int /*usage*/,
int /*l*/, int /*t*/, int /*w*/, int /*h*/,
struct android_ycbcr* ycbcr) {
if (private_handle_t::validate(handle) < 0) {
return -EINVAL;
}
private_handle_t* hnd = (private_handle_t*)handle;
#if DEBUG_REFERENCES
if (hnd->lock_level > DEBUG_MAX_LOCK_LEVEL) {
LOG_FATAL("%s: unbalanced lock detected. lock level = %d",
__FUNCTION__, hnd->lock_level);
}
++hnd->lock_level;
#endif
void* base = reference_region("gralloc_lock_ycbcr", hnd);
formatToYcbcr(hnd->format, hnd->x_res, hnd->y_res, base, ycbcr);
return 0;
}
int32_t gralloc_get_transport_size(struct gralloc_module_t const* /*module*/,
buffer_handle_t handle,
uint32_t *outNumFds,
uint32_t *outNumInts) {
if (private_handle_t::validate(handle) < 0) {
return 2; // GRALLOC1_ERROR_BAD_HANDLE
}
private_handle_t* hnd = (private_handle_t*)handle;
*outNumFds = hnd->numFds;
*outNumInts = hnd->numInts;
return 0;
}
int32_t gralloc_validate_buffer_size(struct gralloc_module_t const* /*device*/,
buffer_handle_t handle,
uint32_t w,
uint32_t h,
int32_t format,
int /*usage*/,
uint32_t stride) {
if (private_handle_t::validate(handle) < 0) {
return 2; // GRALLOC1_ERROR_BAD_HANDLE
}
private_handle_t* hnd = (private_handle_t*)handle;
if (format != hnd->format ||
w > hnd->x_res ||
h > hnd->y_res ||
stride > hnd->stride_in_pixels) {
return 3; // GRALLOC1_ERROR_BAD_VALUE
}
return 0;
}
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