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
|
|
//
|
|
// 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 <cstdlib>
|
|
|
|
void png_setjmp(png_structrp ptr) { setjmp(png_jmpbuf(ptr)); }
|
|
|
|
void* png_fdopen(int fd, const char* mode) {
|
|
FILE* f = fdopen(fd, mode);
|
|
return static_cast<void*>(f);
|
|
}
|
|
|
|
void png_rewind(void* f) { rewind(static_cast<FILE*>(f)); }
|
|
|
|
void png_fread(void* buffer, size_t size, size_t count, void* stream) {
|
|
fread(buffer, size, count, static_cast<FILE*>(stream));
|
|
}
|
|
|
|
void png_fclose(void* f) { fclose(static_cast<FILE*>(f)); }
|
|
|
|
void png_init_io_wrapper(png_structrp png_ptr, void* f) {
|
|
png_init_io(png_ptr, static_cast<FILE*>(f));
|
|
}
|
|
|
|
png_structp png_create_read_struct_wrapper(png_const_charp user_png_ver,
|
|
png_voidp error_ptr) {
|
|
return png_create_read_struct(user_png_ver, error_ptr, NULL, NULL);
|
|
}
|
|
|
|
png_structp png_create_write_struct_wrapper(png_const_charp user_png_ver,
|
|
png_voidp error_ptr) {
|
|
return png_create_write_struct(user_png_ver, error_ptr, NULL, NULL);
|
|
}
|
|
|
|
void png_read_image_wrapper(png_structrp png_ptr, png_bytep image,
|
|
size_t height, size_t rowbytes) {
|
|
png_bytep* ptrs = (png_bytep*)malloc(height * sizeof(png_bytep));
|
|
for (size_t i = 0; i != height; ++i) {
|
|
ptrs[i] = image + (i * rowbytes);
|
|
}
|
|
png_read_image(png_ptr, ptrs);
|
|
free(ptrs);
|
|
}
|
|
|
|
void png_write_image_wrapper(png_structrp png_ptr, png_bytep image,
|
|
size_t height, size_t rowbytes) {
|
|
png_bytep* ptrs = (png_bytep*)malloc(height * sizeof(png_bytep));
|
|
for (size_t i = 0; i != height; ++i) {
|
|
ptrs[i] = image + (i * rowbytes);
|
|
}
|
|
png_write_image(png_ptr, ptrs);
|
|
free(ptrs);
|
|
}
|