在Linux系统中,可以使用libwebp库进行WebP图片的解码
sudo apt-get install libwebp-dev
在CentOS和RHEL系统上,可以使用以下命令安装:
sudo yum install libwebp-devel
#include <stdio.h>
#include <stdlib.h>
#include <webp/decode.h>
int main(int argc, char *argv[]) {
if (argc != 3) {
printf("Usage: %s <input_file> <output_file>\n", argv[0]);
return 1;
}
const char *input_file = argv[1];
const char *output_file = argv[2];
FILE *infile = fopen(input_file, "rb");
if (!infile) {
perror("Error opening input file");
return 1;
}
size_t width, height;
uint8_t *image_data = fread(infile, 1, 1024, infile);
if (!image_data) {
perror("Error reading input file");
fclose(infile);
return 1;
}
WebPDecoderConfig config;
WebPInitDecoderConfig(&config);
config.output_format = WEBP_FORMAT_RGBA;
config.output_size = width * height * 4;
int decode_status = WebPDecodeRGBA(image_data, image_data + fread(infile, 1, 1024, infile), &width, &height, &config);
if (decode_status != VP8_DECODE_OK) {
fprintf(stderr, "Error decoding WebP file\n");
free(image_data);
fclose(infile);
return 1;
}
infile = fopen(output_file, "wb");
if (!infile) {
perror("Error opening output file");
free(image_data);
return 1;
}
fwrite(image_data, 1, width * height * 4, infile);
fclose(infile);
free(image_data);
printf("WebP file decoded successfully and saved to %s\n", output_file);
return 0;
}
gcc -o webp_decoder webp_decoder.c -lwebp
./webp_decoder input.webp output.png
程序将读取WebP文件并将其解码为RGBA图像,然后将解码后的图像保存为PNG文件。