64 lines
1.4 KiB
Markdown
64 lines
1.4 KiB
Markdown
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```c
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/*
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* Keep in mind any function that creates a new buffer and returns it can
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* overwrite the old one, however it is lost. SO create a new variable and free
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* the old one after use.
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*/
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int
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main()
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{
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// Init base image containers
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PPM img;
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JPEG jimg;
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// Add a file location of image to modify
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img.name = "../assets/test_2.ppm";
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// Load the PPM image
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unsigned int* buf = ppm_load(img.name, &img);
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// Check for null image load. In case image doesnt exist or fails to
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// load
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if (!buf)
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{
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LOGERROR(ERR_BUF_NULL);
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return ERR_BUF_NULL;
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}
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// Blur image and save to new pointer
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unsigned int* blur = box_blur(buf, &img, 20);
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// Free old buffer. MUST DO THIS. Maybe not immediately but before
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// ending or possibly leaking. Also it stays in heap and a large image
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// can take a lot of memory so better to clear anyways.
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free(buf);
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// Check for null image load. In case image doesnt exist or fails to
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// load
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if (!blur)
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{
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LOGERROR(ERR_BUF_NULL);
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return ERR_BUF_NULL;
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}
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// Loop image and apply filter to each pixel.
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for (int i = 0; i < img.len; i++)
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{
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blur[i] = u32_rotl(blur[i], 4);
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}
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// Take the attributes from ppm image so jpeg file can be saved
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jimg = inherit_from_ppm(&img);
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// Saves jpeg to location specified
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jpeg_save(blur, &jimg, "../assets/test_2_new.jpg");
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// Make sure to free any buffer still active
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free(blur);
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return 0;
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}
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```
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