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2 Commits
c30932de97
...
032891872f
| Author | SHA1 | Date |
|---|---|---|
ItsMAX0112
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032891872f | |
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ItsMAX0112
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7b85f8155a |
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@ -5,6 +5,7 @@
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"iostream": "cpp",
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"iosfwd": "cpp",
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"fstream": "cpp",
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"xlocmes": "cpp"
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"xlocmes": "cpp",
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"utility": "cpp"
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}
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}
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@ -1,3 +1,14 @@
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SHMDIR = sharedMemory
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shm_build: $(SHMDIR)/shared.cpp
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g++ -g $(SHMDIR)/shared.cpp $(SHMDIR)/important.cpp -o $(SHMDIR)/shared.out
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shm_run: shm_build
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$(SHMDIR)/shared.out ../images/$(INPUT).ppm ../images/$(INPUT)_out.ppm
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# ----- OLD MAKEFILE CMDs -----------------
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build-sharpen: ./a.out
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./a.out: image_sharpener.cpp libppm.cpp
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@ -6,95 +6,76 @@
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using namespace std;
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struct image_t *S1_smoothen(struct image_t *input_image)
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float *S1_smoothen(struct image_t *input_image)
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{
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// cout << input_image->width << input_image->height << " " << input_image->image_pixels << endl;
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int width = input_image->width;
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int height = input_image->height;
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// memory allocation
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struct image_t *smoother = new struct image_t;
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smoother->height = height;
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smoother->width = width;
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smoother->image_pixels = new uint8_t **[height];
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float *smoother = (float *)malloc(height * width * 3 * sizeof(float));
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long ind = 0;
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for (int i = 0; i < height; i++)
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{
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smoother->image_pixels[i] = new uint8_t *[width];
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for (int j = 0; j < width; j++)
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smoother->image_pixels[i][j] = new uint8_t[3];
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}
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for (int i = 1; i < height - 1; i++)
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{
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for (int j = 1; j < width - 1; j++)
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{
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for (int k = 0; k < 3; k++)
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{
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// image->image_pixels[i][j][k] = val;
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// edge cases
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if (i == 0 && j == 0)
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{ // i-1 and j - 1 doesnt exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i][j][k] / 4 + input_image->image_pixels[i][j + 1][k] / 4 + input_image->image_pixels[i + 1][j][k] / 4 + input_image->image_pixels[i + 1][j + 1][k] / 4);
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smoother[ind] = (float)(input_image->image_pixels[i][j][k] / 4 + input_image->image_pixels[i][j + 1][k] / 4 + input_image->image_pixels[i + 1][j][k] / 4 + input_image->image_pixels[i + 1][j + 1][k] / 4);
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}
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else if (i == height - 1 && j == 0)
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{ // i+1 and j-1 does not exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i - 1][j][k] / 4 + input_image->image_pixels[i - 1][j + 1][k] / 4 + input_image->image_pixels[i][j][k] / 4 + input_image->image_pixels[i][j + 1][k] / 4);
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smoother[ind] = (float)(input_image->image_pixels[i - 1][j][k] / 4 + input_image->image_pixels[i - 1][j + 1][k] / 4 + input_image->image_pixels[i][j][k] / 4 + input_image->image_pixels[i][j + 1][k] / 4);
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}
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else if (i == 0 && j == width - 1)
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{ // i-1 and j+1 does not exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i][j - 1][k] / 4 + input_image->image_pixels[i][j][k] / 4 + input_image->image_pixels[i + 1][j - 1][k] / 4 + input_image->image_pixels[i + 1][j][k] / 4);
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smoother[ind] = (float)(input_image->image_pixels[i][j - 1][k] / 4 + input_image->image_pixels[i][j][k] / 4 + input_image->image_pixels[i + 1][j - 1][k] / 4 + input_image->image_pixels[i + 1][j][k] / 4);
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}
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else if (i == height - 1 && j == width - 1)
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{ // i+1 and j+1 does not exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i - 1][j - 1][k] / 4 + input_image->image_pixels[i - 1][j][k] / 4 + input_image->image_pixels[i][j - 1][k] / 4 + input_image->image_pixels[i][j][k] / 4);
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smoother[ind] = (float)(input_image->image_pixels[i - 1][j - 1][k] / 4 + input_image->image_pixels[i - 1][j][k] / 4 + input_image->image_pixels[i][j - 1][k] / 4 + input_image->image_pixels[i][j][k] / 4);
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}
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else if (i == 0)
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{ // i - 1 does not exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i][j - 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i][j + 1][k] / 6 + input_image->image_pixels[i + 1][j - 1][k] / 6 + input_image->image_pixels[i + 1][j][k] / 6 + input_image->image_pixels[i + 1][j + 1][k] / 6);
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smoother[ind] = (float)(input_image->image_pixels[i][j - 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i][j + 1][k] / 6 + input_image->image_pixels[i + 1][j - 1][k] / 6 + input_image->image_pixels[i + 1][j][k] / 6 + input_image->image_pixels[i + 1][j + 1][k] / 6);
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}
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else if (j == 0)
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{ // j -1 does not exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i - 1][j][k] / 6 + input_image->image_pixels[i - 1][j + 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i][j + 1][k] / 6 + input_image->image_pixels[i + 1][j][k] / 6 + input_image->image_pixels[i + 1][j + 1][k] / 6);
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smoother[ind] = (float)(input_image->image_pixels[i - 1][j][k] / 6 + input_image->image_pixels[i - 1][j + 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i][j + 1][k] / 6 + input_image->image_pixels[i + 1][j][k] / 6 + input_image->image_pixels[i + 1][j + 1][k] / 6);
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}
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else if (i == height - 1)
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{ // i+1 does not exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i - 1][j - 1][k] / 6 + input_image->image_pixels[i - 1][j][k] / 6 + input_image->image_pixels[i - 1][j + 1][k] / 6 + input_image->image_pixels[i][j - 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i][j + 1][k] / 6);
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smoother[ind] = (float)(input_image->image_pixels[i - 1][j - 1][k] / 6 + input_image->image_pixels[i - 1][j][k] / 6 + input_image->image_pixels[i - 1][j + 1][k] / 6 + input_image->image_pixels[i][j - 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i][j + 1][k] / 6);
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}
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else if (j == width - 1)
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{ // j + 1 does not exist
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i - 1][j - 1][k] / 6 + input_image->image_pixels[i - 1][j][k] / 6 + input_image->image_pixels[i][j - 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i + 1][j - 1][k] / 6 + input_image->image_pixels[i + 1][j][k] / 6);
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smoother[ind] = (float)(input_image->image_pixels[i - 1][j - 1][k] / 6 + input_image->image_pixels[i - 1][j][k] / 6 + input_image->image_pixels[i][j - 1][k] / 6 + input_image->image_pixels[i][j][k] / 6 + input_image->image_pixels[i + 1][j - 1][k] / 6 + input_image->image_pixels[i + 1][j][k] / 6);
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}
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else
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{
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smoother->image_pixels[i][j][k] = (input_image->image_pixels[i - 1][j - 1][k] / 9 + input_image->image_pixels[i - 1][j][k] / 9 + input_image->image_pixels[i - 1][j + 1][k] / 9 + input_image->image_pixels[i][j - 1][k] / 9 + input_image->image_pixels[i][j][k] / 9 + input_image->image_pixels[i][j + 1][k] / 9 + input_image->image_pixels[i + 1][j - 1][k] / 9 + input_image->image_pixels[i + 1][j][k] / 9 + input_image->image_pixels[i + 1][j + 1][k] / 9);
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smoother[ind] = (float)(input_image->image_pixels[i - 1][j - 1][k] / 9 + input_image->image_pixels[i - 1][j][k] / 9 + input_image->image_pixels[i - 1][j + 1][k] / 9 + input_image->image_pixels[i][j - 1][k] / 9 + input_image->image_pixels[i][j][k] / 9 + input_image->image_pixels[i][j + 1][k] / 9 + input_image->image_pixels[i + 1][j - 1][k] / 9 + input_image->image_pixels[i + 1][j][k] / 9 + input_image->image_pixels[i + 1][j + 1][k] / 9);
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}
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ind++;
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}
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}
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}
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return smoother;
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}
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struct image_t *S2_find_details(struct image_t *input_image, struct image_t *smoothened_image)
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float *S2_find_details(struct image_t *input_image, float *smoothened_image)
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{
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// TODO
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int width = input_image->width;
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int height = input_image->height;
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struct image_t *details = new struct image_t;
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details->height = height;
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details->width = width;
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details->image_pixels = new uint8_t **[height];
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for (int i = 0; i < height; i++)
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{
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details->image_pixels[i] = new uint8_t *[width];
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for (int j = 0; j < width; j++)
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details->image_pixels[i][j] = new uint8_t[3];
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}
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float *details = (float *)malloc(height * width * 3 * sizeof(float));
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long ind = 0;
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for (int i = 1; i < height - 1; i++)
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{
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@ -102,7 +83,8 @@ struct image_t *S2_find_details(struct image_t *input_image, struct image_t *smo
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{
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for (int k = 0; k < 3; k++)
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{
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details->image_pixels[i][j][k] = max(0, input_image->image_pixels[i][j][k] - smoothened_image->image_pixels[i][j][k]);
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details[ind] = max((float)0, (float)input_image->image_pixels[i][j][k] - smoothened_image[ind]);
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ind++;
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}
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}
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}
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@ -110,33 +92,25 @@ struct image_t *S2_find_details(struct image_t *input_image, struct image_t *smo
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return details;
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}
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struct image_t *S3_sharpen(struct image_t *input_image, struct image_t *details_image)
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float *S3_sharpen(struct image_t *input_image, float *details_image)
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{
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// TODO
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int width = input_image->width;
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int height = input_image->height;
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int a = 1;
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float a = 0.8;
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struct image_t *sharp = new struct image_t;
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sharp->height = height;
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sharp->width = width;
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sharp->image_pixels = new uint8_t **[height];
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for (int i = 0; i < height; i++)
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{
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sharp->image_pixels[i] = new uint8_t *[width];
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for (int j = 0; j < width; j++)
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sharp->image_pixels[i][j] = new uint8_t[3];
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}
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float *sharp = (float *)malloc(height * width * 3 * sizeof(float));
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long ind = 0;
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for (int i = 1; i < height - 1; i++)
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{
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for (int j = 1; j < width - 1; j++)
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{
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for (int k = 0; k < 3; k++)
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{
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sharp->image_pixels[i][j][k] = min(255, input_image->image_pixels[i][j][k] + details_image->image_pixels[i][j][k]) * a;
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sharp[ind] = min((float)255, (float)input_image->image_pixels[i][j][k] + a * details_image[ind]);
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ind++;
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}
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}
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}
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@ -9,9 +9,9 @@ struct image_t
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uint8_t*** image_pixels;
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};
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struct image_t* S1_smoothen(struct image_t *input_image);
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struct image_t* S2_find_details(struct image_t *input_image, struct image_t *smoothened_image);
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struct image_t* S3_sharpen(struct image_t *input_image, struct image_t *details_image);
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float* S1_smoothen(struct image_t *input_image);
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float* S2_find_details(struct image_t *input_image, float *smoothened_image);
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float* S3_sharpen(struct image_t *input_image, float *details_image);
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struct image_t* read_ppm_file(char* path_to_input_file);
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void write_ppm_file(char* path_to_output_file, struct image_t* image);
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@ -18,19 +18,40 @@ using namespace std;
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int main(int argc, char *argv[]) {
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// if(argc != 3)
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// {
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// cout << "usage: ./a.out <path-to-original-image> <path-to-transformed-image>\n\n";
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// exit(0);
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// }
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if(argc != 3)
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{
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cout << "usage: ./a.out <path-to-original-image> <path-to-transformed-image>\n\n";
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exit(0);
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}
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// struct image_t *input_image = read_ppm_file(argv[1]);
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struct image_t *input_image = read_ppm_file(argv[1]);
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int height = input_image->height;
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int width = input_image->width;
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struct image_t *sharpened_image = new struct image_t;
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sharpened_image->height = height;
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sharpened_image->width = width;
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sharpened_image->image_pixels = new uint8_t**[sharpened_image->height];
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for(int i = 0; i < sharpened_image->height; i++){
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sharpened_image->image_pixels[i] = new uint8_t*[sharpened_image->width];
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for(int j = 0; j < sharpened_image->width; j++){
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sharpened_image->image_pixels[i][j] = new uint8_t[3];
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}
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}
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float *sharp;
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const char *shm1_name = "/shm_parent_child";
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const char *shm2_name = "/shm_child_grandchild";
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const char *sem1_name = "/sem_parent_child";
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const char *sem2_name = "/sem_child_grandchild";
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size_t size = input_image->height * input_image->width * 3 * sizeof(float);
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// size_t size = 1024;
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int reps=1000;
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// ---------------------------------------------------------------------------------
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int shm_fd = shm_open(shm1_name, O_CREAT | O_RDWR, 0666);
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if (shm_fd == -1) {
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perror("shm_open");
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@ -44,12 +65,33 @@ int main(int argc, char *argv[]) {
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}
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// Map the shared memory object into the process address space
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void *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
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float *ptr = (float*)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
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if (ptr == MAP_FAILED) {
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perror("mmap");
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return 1;
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}
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// -----------------------------------------------------------------------------------
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int shm2_fd = shm_open(shm2_name, O_CREAT | O_RDWR, 0666);
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if (shm2_fd == -1) {
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perror("shm_open");
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return 1;
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}
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// Resize the shared memory object to the desired size
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if (ftruncate(shm2_fd, size) == -1) {
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perror("ftruncate");
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return 1;
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}
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// Map the shared memory object into the process address space
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float *ptr2 = (float*)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, shm2_fd, 0);
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if (ptr2 == MAP_FAILED) {
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perror("mmap");
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return 1;
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}
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// --------------------------------------------------------------------------------------
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sem_t *sem_parent_child = sem_open(sem1_name, O_CREAT, 0666, 0); // Initially locked (0)
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sem_t *sem_child_grandchild = sem_open(sem2_name, O_CREAT, 0666, 0); // Initially locked (0)
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@ -59,9 +101,6 @@ int main(int argc, char *argv[]) {
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}
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// size_t size = input_image->height * input_image->width * 3 * sizeof(uint8_t);
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size_t size = 1024;
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pid_t CHILD;
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CHILD = fork();
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if (CHILD == -1) {
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@ -71,37 +110,14 @@ int main(int argc, char *argv[]) {
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// Parent Process
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if(CHILD != 0){
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char buffer[1024] = {'p', 'a', 'c', 'k', 'e', 't', '\0'};
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buffer[7] = '\0';
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// Write data to the shared memory
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for(int i = 1; i < 5; i++){
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// printf("parent writing to shm\n");
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buffer[6] = '0' + i;
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memcpy(ptr, buffer, 1024); // Copy 1024 bytes to shared memory
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for(int i = 0; i < reps; i++){
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// Optional: Print what is being written to shared memory for verification
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printf("P - Writing to shared memory: %s\n", (char *)ptr);
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float* smoothImage = S1_smoothen(input_image);
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memcpy(ptr, smoothImage, size);
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sem_post(sem_parent_child);
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sem_wait(sem_child_grandchild);
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}
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// Unmap the shared memory object
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if (munmap(ptr, size) == -1) {
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perror("munmap");
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return 1;
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}
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// Close the shared memory file descriptor
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if (close(shm_fd) == -1) {
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perror("close");
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return 1;
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}
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sem_close(sem_parent_child);
|
||||
sem_close(sem_child_grandchild);
|
||||
wait(NULL); /* Wait for child */
|
||||
}
|
||||
|
||||
// Child process
|
||||
|
|
@ -115,135 +131,74 @@ int main(int argc, char *argv[]) {
|
|||
|
||||
// Child Process
|
||||
if(GRAND_CHILD != 0){
|
||||
int shm_fd = shm_open(shm1_name, O_CREAT | O_RDWR, 0666);
|
||||
if (shm_fd == -1) {
|
||||
perror("shm_open");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Resize the shared memory object to the desired size
|
||||
if (ftruncate(shm_fd, size) == -1) {
|
||||
perror("ftruncate");
|
||||
return 1;
|
||||
}
|
||||
for(int i = 0; i < reps; i++){
|
||||
|
||||
// Map the shared memory object into the process address space
|
||||
void *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
|
||||
if (ptr == MAP_FAILED) {
|
||||
perror("mmap");
|
||||
return 1;
|
||||
}
|
||||
|
||||
int shm2_fd = shm_open(shm2_name, O_CREAT | O_RDWR, 0666);
|
||||
if (shm2_fd == -1) {
|
||||
perror("shm_open");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Resize the shared memory object to the desired size
|
||||
if (ftruncate(shm2_fd, size) == -1) {
|
||||
perror("ftruncate");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Map the shared memory object into the process address space
|
||||
void *ptr2 = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, shm2_fd, 0);
|
||||
if (ptr2 == MAP_FAILED) {
|
||||
perror("mmap");
|
||||
return 1;
|
||||
}
|
||||
|
||||
for(int i=0; i<5; i++){
|
||||
// printf("Child reading from shm1 and writing to shm2...\n");
|
||||
sem_wait(sem_parent_child);
|
||||
// Print the contents of the shared memory
|
||||
char *packet = (char *)ptr;
|
||||
printf("C - Shared memory contents: %s\n", packet);
|
||||
// char buffer[1024];
|
||||
// strncpy(buffer, (char *)ptr, 1024);
|
||||
memcpy(ptr2, ptr, 1024);
|
||||
sem_post(sem_child_grandchild); // Signal parent
|
||||
}
|
||||
float *details = S2_find_details(input_image, ptr);
|
||||
memcpy(ptr2, details, 1024);
|
||||
sem_post(sem_child_grandchild); // Signal grandchild
|
||||
|
||||
// Unmap the shared memory object
|
||||
if (munmap(ptr, size) == -1) {
|
||||
perror("munmap");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Close the shared memory file descriptor
|
||||
if (close(shm_fd) == -1) {
|
||||
perror("close");
|
||||
return 1;
|
||||
}
|
||||
// printf("child writing to shm\n");
|
||||
|
||||
// Unmap the shared memory object
|
||||
if (munmap(ptr2, size) == -1) {
|
||||
perror("munmap");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Close the shared memory file descriptor
|
||||
if (close(shm2_fd) == -1) {
|
||||
perror("close");
|
||||
return 1;
|
||||
}
|
||||
|
||||
shm_unlink(shm1_name);
|
||||
sem_close(sem_parent_child);
|
||||
sem_close(sem_child_grandchild);
|
||||
wait(NULL);
|
||||
exit(EXIT_SUCCESS);
|
||||
exit(EXIT_SUCCESS);
|
||||
}
|
||||
|
||||
// GrandChild Process
|
||||
else if (GRAND_CHILD == 0) { /* GrandChild reads from pipe */
|
||||
int shm2_fd = shm_open(shm2_name, O_CREAT | O_RDWR, 0666);
|
||||
if (shm2_fd == -1) {
|
||||
perror("shm_open");
|
||||
return 1;
|
||||
}
|
||||
else if (GRAND_CHILD == 0) {
|
||||
|
||||
// Resize the shared memory object to the desired size
|
||||
if (ftruncate(shm2_fd, size) == -1) {
|
||||
perror("ftruncate");
|
||||
return 1;
|
||||
}
|
||||
printf("GC reading...\n");
|
||||
for(int i = 0; i < reps; i++){
|
||||
|
||||
// Map the shared memory object into the process address space
|
||||
void *ptr2 = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, shm2_fd, 0);
|
||||
if (ptr2 == MAP_FAILED) {
|
||||
perror("mmap");
|
||||
return 1;
|
||||
}
|
||||
|
||||
for(int i=0; i<5; i++){
|
||||
sem_wait(sem_child_grandchild);
|
||||
// Print the contents of the shared memory
|
||||
// printf("Grandchild reading from shm...\n");
|
||||
printf("GC - Shared memory contents: %s\n", (char *)ptr2);
|
||||
}
|
||||
sharp = S3_sharpen(input_image, ptr2);
|
||||
|
||||
// Unmap the shared memory object
|
||||
if (munmap(ptr2, size) == -1) {
|
||||
perror("munmap");
|
||||
return 1;
|
||||
}
|
||||
printf("GC reading done...\n");
|
||||
|
||||
// Close the shared memory file descriptor
|
||||
if (close(shm2_fd) == -1) {
|
||||
perror("close");
|
||||
return 1;
|
||||
}
|
||||
|
||||
shm_unlink(shm2_name);
|
||||
sem_close(sem_parent_child);
|
||||
sem_close(sem_child_grandchild);
|
||||
exit(EXIT_SUCCESS);
|
||||
}
|
||||
}
|
||||
|
||||
wait(NULL);
|
||||
wait(NULL);
|
||||
|
||||
int ind=0;
|
||||
for(int i = 0; i < sharpened_image->height; i++){
|
||||
for(int j = 0; j < sharpened_image->width; j++){
|
||||
for(int k = 0; k < 3; k++){
|
||||
sharpened_image->image_pixels[i][j][k] = sharp[ind++];
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("Writing output file...\n");
|
||||
write_ppm_file(argv[2], sharpened_image);
|
||||
|
||||
// Unmap the shared memory object
|
||||
if (munmap(ptr, size) == -1) {
|
||||
perror("munmap");
|
||||
return 1;
|
||||
}
|
||||
// Close the shared memory file descriptor
|
||||
if (close(shm_fd) == -1) {
|
||||
perror("close");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Unmap the shared memory object
|
||||
if (munmap(ptr2, size) == -1) {
|
||||
perror("munmap");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Close the shared memory file descriptor
|
||||
if (close(shm2_fd) == -1) {
|
||||
perror("close");
|
||||
return 1;
|
||||
}
|
||||
|
||||
shm_unlink(shm1_name);
|
||||
shm_unlink(shm2_name);
|
||||
|
||||
sem_close(sem_parent_child);
|
||||
sem_close(sem_child_grandchild);
|
||||
sem_unlink(sem1_name);
|
||||
|
|
|
|||
Loading…
Reference in New Issue