mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
synced 2025-10-30 19:15:47 +01:00
91 lines
3.0 KiB
C++
91 lines
3.0 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
|
|
namespace ams::ncm {
|
|
|
|
namespace {
|
|
|
|
constexpr inline s64 EncryptionMetadataSize = 16_KB;
|
|
constexpr inline s64 ConcatenationFileSizeMax = 4_GB;
|
|
|
|
constexpr s64 CalculateAdditionalContentSize(s64 file_size, s64 cluster_size) {
|
|
/* Account for the encryption header. */
|
|
s64 size = EncryptionMetadataSize;
|
|
|
|
/* Account for the file size splitting costs. */
|
|
size += ((file_size / ConcatenationFileSizeMax) + 1) * cluster_size;
|
|
|
|
/* Account for various overhead costs. */
|
|
size += cluster_size * 3;
|
|
|
|
return size;
|
|
}
|
|
|
|
template<typename Handler>
|
|
Result ForEachContentInfo(const ContentMetaKey &key, ncm::ContentMetaDatabase *db, Handler handler) {
|
|
constexpr s32 MaxPerIteration = 0x10;
|
|
ContentInfo info_list[MaxPerIteration];
|
|
s32 offset = 0;
|
|
while (true) {
|
|
/* List the content infos. */
|
|
s32 count;
|
|
R_TRY(db->ListContentInfo(std::addressof(count), info_list, MaxPerIteration, key, offset));
|
|
|
|
/* Handle all that we listed. */
|
|
for (s32 i = 0; i < count; i++) {
|
|
bool done = false;
|
|
R_TRY(handler(std::addressof(done), info_list[i]));
|
|
if (done) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Check if we're done. */
|
|
if (count != MaxPerIteration) {
|
|
break;
|
|
}
|
|
|
|
offset += count;
|
|
}
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
}
|
|
|
|
s64 CalculateRequiredSize(s64 file_size, s64 cluster_size) {
|
|
return file_size + CalculateAdditionalContentSize(file_size, cluster_size);
|
|
}
|
|
|
|
s64 CalculateRequiredSizeForExtension(s64 file_size, s64 cluster_size) {
|
|
return file_size + ((file_size / ConcatenationFileSizeMax) + 1) * cluster_size;
|
|
}
|
|
|
|
Result EstimateRequiredSize(s64 *out_size, const ContentMetaKey &key, ncm::ContentMetaDatabase *db) {
|
|
s64 size = 0;
|
|
R_TRY(ForEachContentInfo(key, db, [&size](bool *out_done, const ContentInfo &info) -> Result {
|
|
size += CalculateRequiredSize(info.GetSize(), MaxClusterSize);
|
|
*out_done = false;
|
|
R_SUCCEED();
|
|
}));
|
|
|
|
*out_size = size;
|
|
R_SUCCEED();
|
|
}
|
|
|
|
}
|