mirror of
https://github.com/google/sandboxed-api.git
synced 2024-03-22 13:11:30 +08:00
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <cstdlib>
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void png_setjmp(png_structrp ptr) { setjmp(png_jmpbuf(ptr)); }
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void* png_fdopen(int fd, const char* mode) {
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FILE* f = fdopen(fd, mode);
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return static_cast<void*>(f);
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}
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void png_rewind(void* f) { rewind(static_cast<FILE*>(f)); }
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void png_fread(void* buffer, size_t size, size_t count, void* stream) {
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fread(buffer, size, count, static_cast<FILE*>(stream));
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}
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void png_fclose(void* f) { fclose(static_cast<FILE*>(f)); }
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void png_init_io_wrapper(png_structrp png_ptr, void* f) {
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png_init_io(png_ptr, static_cast<FILE*>(f));
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}
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png_structp png_create_read_struct_wrapper(png_const_charp user_png_ver,
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png_voidp error_ptr) {
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return png_create_read_struct(user_png_ver, error_ptr, NULL, NULL);
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}
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png_structp png_create_write_struct_wrapper(png_const_charp user_png_ver,
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png_voidp error_ptr) {
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return png_create_write_struct(user_png_ver, error_ptr, NULL, NULL);
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}
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void png_read_image_wrapper(png_structrp png_ptr, png_bytep image,
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size_t height, size_t rowbytes) {
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png_bytep* ptrs = (png_bytep*)malloc(height * sizeof(png_bytep));
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for (size_t i = 0; i != height; ++i) {
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ptrs[i] = image + (i * rowbytes);
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}
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png_read_image(png_ptr, ptrs);
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free(ptrs);
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}
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void png_write_image_wrapper(png_structrp png_ptr, png_bytep image,
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size_t height, size_t rowbytes) {
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png_bytep* ptrs = (png_bytep*)malloc(height * sizeof(png_bytep));
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for (size_t i = 0; i != height; ++i) {
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ptrs[i] = image + (i * rowbytes);
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}
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png_write_image(png_ptr, ptrs);
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free(ptrs);
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}
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