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73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/*
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libheif example application "convert".
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This file is part of convert, an example application using libheif.
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MIT License
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Copyright (c) 2018 struktur AG, Joachim Bauch <bauch@struktur.de>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#if defined(HAVE_CONFIG_H)
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include "encoder.h"
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static const char kMetadataTypeExif[] = "Exif";
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// static
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bool Encoder::HasExifMetaData(const struct heif_image_handle* handle)
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{
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heif_item_id metadata_id;
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int count = heif_image_handle_get_list_of_metadata_block_IDs(handle, kMetadataTypeExif,
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&metadata_id, 1);
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return count > 0;
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}
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// static
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uint8_t* Encoder::GetExifMetaData(const struct heif_image_handle* handle, size_t* size)
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{
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heif_item_id metadata_id;
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int count = heif_image_handle_get_list_of_metadata_block_IDs(handle, kMetadataTypeExif,
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&metadata_id, 1);
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for (int i = 0; i < count; i++) {
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size_t datasize = heif_image_handle_get_metadata_size(handle, metadata_id);
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uint8_t* data = static_cast<uint8_t*>(malloc(datasize));
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if (!data) {
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continue;
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}
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heif_error error = heif_image_handle_get_metadata(handle, metadata_id, data);
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if (error.code != heif_error_Ok) {
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free(data);
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continue;
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}
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*size = datasize;
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return data;
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}
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return nullptr;
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}
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