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/*
* Copyright (C) 2015 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.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "Metadata"
#include <cutils/log.h>
#include <system/camera_metadata.h>
#define ATRACE_TAG (ATRACE_TAG_CAMERA | ATRACE_TAG_HAL)
#include <utils/Trace.h>
#include "Metadata.h"
namespace usb_camera_hal {
Metadata::Metadata():
mData(NULL) {
}
Metadata::~Metadata() {
replace(NULL);
}
void Metadata::replace(camera_metadata_t *m) {
if (m == mData) {
return;
}
if (mData)
free_camera_metadata(mData);
mData = m;
}
int Metadata::init(const camera_metadata_t *metadata) {
camera_metadata_t* tmp;
if (!validate_camera_metadata_structure(metadata, NULL))
return -EINVAL;
tmp = clone_camera_metadata(metadata);
if (tmp == NULL)
return -EINVAL;
replace(tmp);
return 0;
}
int Metadata::addUInt8(uint32_t tag, int count, const uint8_t *data) {
if (!validate(tag, TYPE_BYTE, count)) return -EINVAL;
return add(tag, count, data);
}
int Metadata::add1UInt8(uint32_t tag, const uint8_t data) {
return addUInt8(tag, 1, &data);
}
int Metadata::addInt32(uint32_t tag, int count, const int32_t *data) {
if (!validate(tag, TYPE_INT32, count)) return -EINVAL;
return add(tag, count, data);
}
int Metadata::addFloat(uint32_t tag, int count, const float *data) {
if (!validate(tag, TYPE_FLOAT, count)) return -EINVAL;
return add(tag, count, data);
}
int Metadata::addInt64(uint32_t tag, int count, const int64_t *data) {
if (!validate(tag, TYPE_INT64, count)) return -EINVAL;
return add(tag, count, data);
}
int Metadata::addDouble(uint32_t tag, int count, const double *data) {
if (!validate(tag, TYPE_DOUBLE, count)) return -EINVAL;
return add(tag, count, data);
}
int Metadata::addRational(uint32_t tag, int count,
const camera_metadata_rational_t *data) {
if (!validate(tag, TYPE_RATIONAL, count)) return -EINVAL;
return add(tag, count, data);
}
bool Metadata::validate(uint32_t tag, int tag_type, int count) {
if (get_camera_metadata_tag_type(tag) < 0) {
ALOGE("%s: Invalid metadata entry tag: %d", __func__, tag);
return false;
}
if (tag_type < 0 || tag_type >= NUM_TYPES) {
ALOGE("%s: Invalid metadata entry tag type: %d", __func__, tag_type);
return false;
}
if (tag_type != get_camera_metadata_tag_type(tag)) {
ALOGE("%s: Tag %d called with incorrect type: %s(%d)", __func__, tag,
camera_metadata_type_names[tag_type], tag_type);
return false;
}
if (count < 1) {
ALOGE("%s: Invalid metadata entry count: %d", __func__, count);
return false;
}
return true;
}
int Metadata::add(uint32_t tag, int count, const void *tag_data) {
// Opportunistically attempt to add if metadata has room for it
if (!add_camera_metadata_entry(mData, tag, tag_data, count)) {
return 0;
}
int res;
camera_metadata_t* tmp;
int tag_type = get_camera_metadata_tag_type(tag);
size_t size = calculate_camera_metadata_entry_data_size(tag_type, count);
size_t entry_capacity = get_camera_metadata_entry_count(mData) + 1;
size_t data_capacity = get_camera_metadata_data_count(mData) + size;
// Double new dimensions to minimize future reallocations
tmp = allocate_camera_metadata(entry_capacity * 2, data_capacity * 2);
if (tmp == NULL) {
ALOGE("%s: Failed to allocate new metadata with %zu entries, %zu data",
__func__, entry_capacity, data_capacity);
return -ENOMEM;
}
// Append the current metadata to the new (empty) metadata
res = append_camera_metadata(tmp, mData);
if (res) {
ALOGE("%s: Failed to append old metadata %p to new %p",
__func__, mData, tmp);
return res;
}
// Add the remaining new item
res = add_camera_metadata_entry(tmp, tag, tag_data, count);
if (res) {
ALOGE("%s: Failed to add new entry (%d, %p, %d) to metadata %p",
__func__, tag, tag_data, count, tmp);
return res;
}
replace(tmp);
return 0;
}
camera_metadata_t* Metadata::get() {
return mData;
}
} // namespace usb_camera_hal
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