Re-ran indent on all .c & .h source code files
Like so --
find . -name "*.c" -or -name "*.h" -exec indent -nbfda -npcs -npsl -bli0 --no-tabs {} \;
The `indent` invocation differs from the last one noted in
CHANGES.txt (from 2006!?), in that I've added "--no-tabs",
to ensure indents are all space-based.
This commit is contained in:
Bill Kendrick
parent
09f332367f
commit
cc05925d9e
99 changed files with 31659 additions and 27102 deletions
506
src/gifenc.c
506
src/gifenc.c
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@ -16,52 +16,50 @@
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#define write_num(fd, n) write((fd), (uint8_t []) {(n) & 0xFF, (n) >> 8}, 2)
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static uint8_t vga[0x30] = {
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0x00, 0x00, 0x00,
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0xAA, 0x00, 0x00,
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0x00, 0xAA, 0x00,
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0xAA, 0x55, 0x00,
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0x00, 0x00, 0xAA,
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0xAA, 0x00, 0xAA,
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0x00, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA,
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0x55, 0x55, 0x55,
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0xFF, 0x55, 0x55,
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0x55, 0xFF, 0x55,
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0xFF, 0xFF, 0x55,
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0x55, 0x55, 0xFF,
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0xFF, 0x55, 0xFF,
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0x55, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF,
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0x00, 0x00, 0x00,
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0xAA, 0x00, 0x00,
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0x00, 0xAA, 0x00,
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0xAA, 0x55, 0x00,
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0x00, 0x00, 0xAA,
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0xAA, 0x00, 0xAA,
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0x00, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA,
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0x55, 0x55, 0x55,
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0xFF, 0x55, 0x55,
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0x55, 0xFF, 0x55,
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0xFF, 0xFF, 0x55,
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0x55, 0x55, 0xFF,
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0xFF, 0x55, 0xFF,
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0x55, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF,
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};
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struct Node {
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uint16_t key;
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struct Node *children[];
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struct Node
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{
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uint16_t key;
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struct Node *children[];
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};
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typedef struct Node Node;
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static Node *
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new_node(uint16_t key, int degree)
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static Node *new_node(uint16_t key, int degree)
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{
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Node *node = calloc(1, sizeof(*node) + degree * sizeof(Node *));
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if (node)
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node->key = key;
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return node;
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Node *node = calloc(1, sizeof(*node) + degree * sizeof(Node *));
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if (node)
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node->key = key;
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return node;
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}
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static Node *
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new_trie(int degree, int *nkeys)
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static Node *new_trie(int degree, int *nkeys)
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{
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Node *root = new_node(0, degree);
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/* Create nodes for single pixels. */
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for (*nkeys = 0; *nkeys < degree; (*nkeys)++)
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root->children[*nkeys] = new_node(*nkeys, degree);
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*nkeys += 2; /* skip clear code and stop code */
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return root;
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Node *root = new_node(0, degree);
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/* Create nodes for single pixels. */
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for (*nkeys = 0; *nkeys < degree; (*nkeys)++)
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root->children[*nkeys] = new_node(*nkeys, degree);
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*nkeys += 2; /* skip clear code and stop code */
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return root;
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}
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static void
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del_trie(Node *root, int degree)
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static void del_trie(Node * root, int degree)
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{
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int i;
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@ -72,191 +70,261 @@ del_trie(Node *root, int degree)
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free(root);
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}
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static void put_loop(ge_GIF *gif, uint16_t loop);
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static void put_loop(ge_GIF * gif, uint16_t loop);
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#define OR_ABORT if (res == -1) { fprintf(stderr, "Cannot write to GIF\n"); return(NULL); }
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#define OR_ABORT2 if (res == -1) { fprintf(stderr, "Cannot write to GIF\n"); return; }
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ge_GIF *
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ge_new_gif(
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const char *fname, uint16_t width, uint16_t height,
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uint8_t *palette, int depth, int loop
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)
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ge_GIF *ge_new_gif(const char *fname, uint16_t width, uint16_t height,
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uint8_t * palette, int depth, int loop)
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{
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int i, r, g, b, v;
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ssize_t res;
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ge_GIF *gif = calloc(1, sizeof(*gif) + 2*width*height);
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if (!gif)
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goto no_gif;
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gif->w = width; gif->h = height;
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gif->depth = depth > 1 ? depth : 2;
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gif->frame = (uint8_t *) &gif[1];
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gif->back = &gif->frame[width*height];
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gif->fd = creat(fname, 0666);
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if (gif->fd == -1)
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goto no_fd;
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int i, r, g, b, v;
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ssize_t res;
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ge_GIF *gif = calloc(1, sizeof(*gif) + 2 * width * height);
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if (!gif)
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goto no_gif;
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gif->w = width;
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gif->h = height;
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gif->depth = depth > 1 ? depth : 2;
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gif->frame = (uint8_t *) & gif[1];
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gif->back = &gif->frame[width * height];
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gif->fd = creat(fname, 0666);
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if (gif->fd == -1)
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goto no_fd;
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#ifdef _WIN32
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setmode(gif->fd, O_BINARY);
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setmode(gif->fd, O_BINARY);
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#endif
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res = write(gif->fd, "GIF89a", 6); OR_ABORT;
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res = write_num(gif->fd, width); OR_ABORT;
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res = write_num(gif->fd, height); OR_ABORT;
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res = write(gif->fd, (uint8_t []) {0xF0 | (depth-1), 0x00, 0x00}, 3); OR_ABORT;
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if (palette) {
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res = write(gif->fd, palette, 3 << depth); OR_ABORT;
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} else if (depth <= 4) {
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res = write(gif->fd, vga, 3 << depth); OR_ABORT;
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} else {
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res = write(gif->fd, vga, sizeof(vga)); OR_ABORT;
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i = 0x10;
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for (r = 0; r < 6; r++) {
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for (g = 0; g < 6; g++) {
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for (b = 0; b < 6; b++) {
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res = write(gif->fd, (uint8_t []) {r*51, g*51, b*51}, 3); OR_ABORT;
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if (++i == 1 << depth)
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goto done_gct;
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}
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}
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}
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for (i = 1; i <= 24; i++) {
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v = i * 0xFF / 25;
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res = write(gif->fd, (uint8_t []) {v, v, v}, 3); OR_ABORT;
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res = write(gif->fd, "GIF89a", 6);
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OR_ABORT;
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res = write_num(gif->fd, width);
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OR_ABORT;
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res = write_num(gif->fd, height);
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OR_ABORT;
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res = write(gif->fd, (uint8_t[])
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{
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0xF0 | (depth - 1), 0x00, 0x00}
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, 3);
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OR_ABORT;
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if (palette)
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{
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res = write(gif->fd, palette, 3 << depth);
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OR_ABORT;
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}
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else if (depth <= 4)
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{
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res = write(gif->fd, vga, 3 << depth);
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OR_ABORT;
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}
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else
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{
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res = write(gif->fd, vga, sizeof(vga));
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OR_ABORT;
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i = 0x10;
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for (r = 0; r < 6; r++)
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{
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for (g = 0; g < 6; g++)
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{
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for (b = 0; b < 6; b++)
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{
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res = write(gif->fd, (uint8_t[])
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{
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r * 51, g * 51, b * 51}
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, 3);
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OR_ABORT;
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if (++i == 1 << depth)
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goto done_gct;
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}
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}
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}
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for (i = 1; i <= 24; i++)
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{
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v = i * 0xFF / 25;
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res = write(gif->fd, (uint8_t[])
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{
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v, v, v}
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, 3);
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OR_ABORT;
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}
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}
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done_gct:
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if (loop >= 0 && loop <= 0xFFFF)
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put_loop(gif, (uint16_t) loop);
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return gif;
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if (loop >= 0 && loop <= 0xFFFF)
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put_loop(gif, (uint16_t) loop);
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return gif;
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no_fd:
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free(gif);
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free(gif);
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no_gif:
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return NULL;
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return NULL;
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}
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static void
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put_loop(ge_GIF *gif, uint16_t loop)
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static void put_loop(ge_GIF * gif, uint16_t loop)
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{
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ssize_t res;
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ssize_t res;
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res = write(gif->fd, (uint8_t []) {'!', 0xFF, 0x0B}, 3); OR_ABORT2;
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res = write(gif->fd, "NETSCAPE2.0", 11); OR_ABORT2;
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res = write(gif->fd, (uint8_t []) {0x03, 0x01}, 2); OR_ABORT2;
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res = write_num(gif->fd, loop); OR_ABORT2;
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res = write(gif->fd, "\0", 1); OR_ABORT2;
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res = write(gif->fd, (uint8_t[])
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{
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'!', 0xFF, 0x0B}, 3);
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OR_ABORT2;
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res = write(gif->fd, "NETSCAPE2.0", 11);
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OR_ABORT2;
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res = write(gif->fd, (uint8_t[])
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{
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0x03, 0x01}, 2);
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OR_ABORT2;
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res = write_num(gif->fd, loop);
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OR_ABORT2;
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res = write(gif->fd, "\0", 1);
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OR_ABORT2;
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}
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/* Add packed key to buffer, updating offset and partial.
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* gif->offset holds position to put next *bit*
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* gif->partial holds bits to include in next byte */
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static void
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put_key(ge_GIF *gif, uint16_t key, int key_size)
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static void put_key(ge_GIF * gif, uint16_t key, int key_size)
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{
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int byte_offset, bit_offset, bits_to_write;
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ssize_t res;
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int byte_offset, bit_offset, bits_to_write;
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ssize_t res;
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byte_offset = gif->offset / 8;
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bit_offset = gif->offset % 8;
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gif->partial |= ((uint32_t) key) << bit_offset;
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bits_to_write = bit_offset + key_size;
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while (bits_to_write >= 8) {
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gif->buffer[byte_offset++] = gif->partial & 0xFF;
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if (byte_offset == 0xFF) {
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res = write(gif->fd, "\xFF", 1); OR_ABORT2;
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res = write(gif->fd, gif->buffer, 0xFF); OR_ABORT2;
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byte_offset = 0;
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}
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gif->partial >>= 8;
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bits_to_write -= 8;
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byte_offset = gif->offset / 8;
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bit_offset = gif->offset % 8;
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gif->partial |= ((uint32_t) key) << bit_offset;
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bits_to_write = bit_offset + key_size;
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while (bits_to_write >= 8)
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{
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gif->buffer[byte_offset++] = gif->partial & 0xFF;
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if (byte_offset == 0xFF)
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{
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res = write(gif->fd, "\xFF", 1);
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OR_ABORT2;
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res = write(gif->fd, gif->buffer, 0xFF);
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OR_ABORT2;
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byte_offset = 0;
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}
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gif->offset = (gif->offset + key_size) % (0xFF * 8);
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gif->partial >>= 8;
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bits_to_write -= 8;
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}
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gif->offset = (gif->offset + key_size) % (0xFF * 8);
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}
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static void end_key(ge_GIF * gif)
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{
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int byte_offset;
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ssize_t res;
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byte_offset = gif->offset / 8;
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if (gif->offset % 8)
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gif->buffer[byte_offset++] = gif->partial & 0xFF;
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res = write(gif->fd, (uint8_t[])
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{
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byte_offset}
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, 1);
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OR_ABORT2;
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res = write(gif->fd, gif->buffer, byte_offset);
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OR_ABORT2;
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res = write(gif->fd, "\0", 1);
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OR_ABORT2;
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gif->offset = gif->partial = 0;
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}
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static void
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end_key(ge_GIF *gif)
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put_image(ge_GIF * gif, uint16_t w, uint16_t h, uint16_t x, uint16_t y)
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{
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int byte_offset;
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ssize_t res;
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int nkeys, key_size, i, j;
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Node *node, *child, *root;
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ssize_t res;
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int degree = 1 << gif->depth;
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byte_offset = gif->offset / 8;
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if (gif->offset % 8)
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gif->buffer[byte_offset++] = gif->partial & 0xFF;
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res = write(gif->fd, (uint8_t []) {byte_offset}, 1); OR_ABORT2;
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res = write(gif->fd, gif->buffer, byte_offset); OR_ABORT2;
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res = write(gif->fd, "\0", 1); OR_ABORT2;
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gif->offset = gif->partial = 0;
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}
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static void
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put_image(ge_GIF *gif, uint16_t w, uint16_t h, uint16_t x, uint16_t y)
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{
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int nkeys, key_size, i, j;
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Node *node, *child, *root;
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ssize_t res;
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int degree = 1 << gif->depth;
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res = write(gif->fd, ",", 1); OR_ABORT2;
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res = write_num(gif->fd, x); OR_ABORT2;
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res = write_num(gif->fd, y); OR_ABORT2;
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res = write_num(gif->fd, w); OR_ABORT2;
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res = write_num(gif->fd, h); OR_ABORT2;
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res = write(gif->fd, (uint8_t []) {0x00, gif->depth}, 2); OR_ABORT2;
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root = node = new_trie(degree, &nkeys);
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key_size = gif->depth + 1;
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put_key(gif, degree, key_size); /* clear code */
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for (i = y; i < y+h; i++) {
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for (j = x; j < x+w; j++) {
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uint8_t pixel = gif->frame[i*gif->w+j] & (degree - 1);
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child = node->children[pixel];
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if (child) {
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node = child;
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} else {
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put_key(gif, node->key, key_size);
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if (nkeys < 0x1000) {
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if (nkeys == (1 << key_size))
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key_size++;
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node->children[pixel] = new_node(nkeys++, degree);
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} else {
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put_key(gif, degree, key_size); /* clear code */
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del_trie(root, degree);
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root = node = new_trie(degree, &nkeys);
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key_size = gif->depth + 1;
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}
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node = root->children[pixel];
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}
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res = write(gif->fd, ",", 1);
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OR_ABORT2;
|
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res = write_num(gif->fd, x);
|
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OR_ABORT2;
|
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res = write_num(gif->fd, y);
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OR_ABORT2;
|
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res = write_num(gif->fd, w);
|
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OR_ABORT2;
|
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res = write_num(gif->fd, h);
|
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OR_ABORT2;
|
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res = write(gif->fd, (uint8_t[])
|
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{
|
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0x00, gif->depth}, 2);
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OR_ABORT2;
|
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root = node = new_trie(degree, &nkeys);
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key_size = gif->depth + 1;
|
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put_key(gif, degree, key_size); /* clear code */
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for (i = y; i < y + h; i++)
|
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{
|
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for (j = x; j < x + w; j++)
|
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{
|
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uint8_t pixel = gif->frame[i * gif->w + j] & (degree - 1);
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child = node->children[pixel];
|
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if (child)
|
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{
|
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node = child;
|
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}
|
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else
|
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{
|
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put_key(gif, node->key, key_size);
|
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if (nkeys < 0x1000)
|
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{
|
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if (nkeys == (1 << key_size))
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key_size++;
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node->children[pixel] = new_node(nkeys++, degree);
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}
|
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else
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{
|
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put_key(gif, degree, key_size); /* clear code */
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del_trie(root, degree);
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root = node = new_trie(degree, &nkeys);
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key_size = gif->depth + 1;
|
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}
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node = root->children[pixel];
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}
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}
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put_key(gif, node->key, key_size);
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put_key(gif, degree + 1, key_size); /* stop code */
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end_key(gif);
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del_trie(root, degree);
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}
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put_key(gif, node->key, key_size);
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put_key(gif, degree + 1, key_size); /* stop code */
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end_key(gif);
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del_trie(root, degree);
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}
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|
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static int
|
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get_bbox(ge_GIF *gif, uint16_t *w, uint16_t *h, uint16_t *x, uint16_t *y)
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||||
get_bbox(ge_GIF * gif, uint16_t * w, uint16_t * h, uint16_t * x, uint16_t * y)
|
||||
{
|
||||
int i, j, k;
|
||||
int left, right, top, bottom;
|
||||
left = gif->w; right = 0;
|
||||
top = gif->h; bottom = 0;
|
||||
k = 0;
|
||||
for (i = 0; i < gif->h; i++) {
|
||||
for (j = 0; j < gif->w; j++, k++) {
|
||||
if (gif->frame[k] != gif->back[k]) {
|
||||
if (j < left) left = j;
|
||||
if (j > right) right = j;
|
||||
if (i < top) top = i;
|
||||
if (i > bottom) bottom = i;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (left != gif->w && top != gif->h) {
|
||||
*x = left; *y = top;
|
||||
*w = right - left + 1;
|
||||
*h = bottom - top + 1;
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
int i, j, k;
|
||||
int left, right, top, bottom;
|
||||
left = gif->w;
|
||||
right = 0;
|
||||
top = gif->h;
|
||||
bottom = 0;
|
||||
k = 0;
|
||||
for (i = 0; i < gif->h; i++)
|
||||
{
|
||||
for (j = 0; j < gif->w; j++, k++)
|
||||
{
|
||||
if (gif->frame[k] != gif->back[k])
|
||||
{
|
||||
if (j < left)
|
||||
left = j;
|
||||
if (j > right)
|
||||
right = j;
|
||||
if (i < top)
|
||||
top = i;
|
||||
if (i > bottom)
|
||||
bottom = i;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (left != gif->w && top != gif->h)
|
||||
{
|
||||
*x = left;
|
||||
*y = top;
|
||||
*w = right - left + 1;
|
||||
*h = bottom - top + 1;
|
||||
return 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* (From the docs)
|
||||
|
|
@ -267,46 +335,52 @@ get_bbox(ge_GIF *gif, uint16_t *w, uint16_t *h, uint16_t *x, uint16_t *y)
|
|||
* a minimum of `delay` == 6. If `delay` == 0, no delay information will be stored
|
||||
* for the frame. This can be used when creating still (single-frame) GIF images.
|
||||
*/
|
||||
static void
|
||||
set_delay(ge_GIF *gif, uint16_t d)
|
||||
static void set_delay(ge_GIF * gif, uint16_t d)
|
||||
{
|
||||
ssize_t res;
|
||||
ssize_t res;
|
||||
|
||||
res = write(gif->fd, (uint8_t []) {'!', 0xF9, 0x04, 0x04}, 4); OR_ABORT2;
|
||||
res = write_num(gif->fd, d); OR_ABORT2;
|
||||
res = write(gif->fd, "\0\0", 2); OR_ABORT2;
|
||||
res = write(gif->fd, (uint8_t[])
|
||||
{
|
||||
'!', 0xF9, 0x04, 0x04}, 4);
|
||||
OR_ABORT2;
|
||||
res = write_num(gif->fd, d);
|
||||
OR_ABORT2;
|
||||
res = write(gif->fd, "\0\0", 2);
|
||||
OR_ABORT2;
|
||||
}
|
||||
|
||||
void
|
||||
ge_add_frame(ge_GIF *gif, uint16_t delay)
|
||||
void ge_add_frame(ge_GIF * gif, uint16_t delay)
|
||||
{
|
||||
uint16_t w, h, x, y;
|
||||
uint8_t *tmp;
|
||||
uint16_t w, h, x, y;
|
||||
uint8_t *tmp;
|
||||
|
||||
if (delay)
|
||||
set_delay(gif, delay);
|
||||
if (gif->nframes == 0) {
|
||||
w = gif->w;
|
||||
h = gif->h;
|
||||
x = y = 0;
|
||||
} else if (!get_bbox(gif, &w, &h, &x, &y)) {
|
||||
/* image's not changed; save one pixel just to add delay */
|
||||
w = h = 1;
|
||||
x = y = 0;
|
||||
}
|
||||
put_image(gif, w, h, x, y);
|
||||
gif->nframes++;
|
||||
tmp = gif->back;
|
||||
gif->back = gif->frame;
|
||||
gif->frame = tmp;
|
||||
if (delay)
|
||||
set_delay(gif, delay);
|
||||
if (gif->nframes == 0)
|
||||
{
|
||||
w = gif->w;
|
||||
h = gif->h;
|
||||
x = y = 0;
|
||||
}
|
||||
else if (!get_bbox(gif, &w, &h, &x, &y))
|
||||
{
|
||||
/* image's not changed; save one pixel just to add delay */
|
||||
w = h = 1;
|
||||
x = y = 0;
|
||||
}
|
||||
put_image(gif, w, h, x, y);
|
||||
gif->nframes++;
|
||||
tmp = gif->back;
|
||||
gif->back = gif->frame;
|
||||
gif->frame = tmp;
|
||||
}
|
||||
|
||||
void
|
||||
ge_close_gif(ge_GIF* gif)
|
||||
void ge_close_gif(ge_GIF * gif)
|
||||
{
|
||||
ssize_t res;
|
||||
ssize_t res;
|
||||
|
||||
res = write(gif->fd, ";", 1); OR_ABORT2;
|
||||
close(gif->fd);
|
||||
free(gif);
|
||||
res = write(gif->fd, ";", 1);
|
||||
OR_ABORT2;
|
||||
close(gif->fd);
|
||||
free(gif);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue