34 memset(max_pixsteps, 0, 4*
sizeof(max_pixsteps[0]));
35 if (max_pixstep_comps)
36 memset(max_pixstep_comps, 0, 4*
sizeof(max_pixstep_comps[0]));
38 for (i = 0; i < 4; i++) {
42 if (max_pixstep_comps)
43 max_pixstep_comps[comp->
plane] = i;
62 s = (max_step_comp[plane] == 1 || max_step_comp[plane] == 2) ? desc->
log2_chroma_w : 0;
63 return max_step[plane] * (((width + (1 << s) - 1)) >> s);
73 memset(linesizes, 0, 4*
sizeof(linesizes[0]));
86 for (i = 0; i < 4; i++) {
87 int s = (max_step_comp[i] == 1 || max_step_comp[i] == 2) ? desc->
log2_chroma_w : 0;
88 int shifted_w = ((width + (1 << s) - 1)) >> s;
89 if (max_step[i] > INT_MAX / shifted_w)
91 linesizes[i] = max_step[i] * shifted_w;
98 uint8_t *ptr,
const int linesizes[4])
100 int i, total_size,
size[4] = { 0 }, has_plane[4] = { 0 };
103 memset(data , 0,
sizeof(data[0])*4);
109 if (linesizes[0] > (INT_MAX - 1024) / height)
111 size[0] = linesizes[0] *
height;
115 size[0] = (size[0] + 3) & ~3;
116 data[1] = ptr + size[0];
117 return size[0] + 256 * 4;
120 for (i = 0; i < 4; i++)
123 total_size = size[0];
124 for (i = 1; i < 4 && has_plane[i]; i++) {
126 data[i] = data[i-1] + size[i-1];
127 h = (height + (1 << s) - 1) >> s;
128 if (linesizes[i] > INT_MAX / h)
130 size[i] = h * linesizes[i];
131 if (total_size > INT_MAX - size[i])
133 total_size += size[i];
143 for (i = 0; i < 256; i++) {
173 pal[i] = b + (g<<8) + (r<<16);
194 for (i = 0; i < 4; i++)
195 linesizes[i] =
FFALIGN(linesizes[i], align);
224 if ((
int)w>0 && (
int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
232 const uint8_t *src,
int src_linesize,
233 int bytewidth,
int height)
237 for (;height > 0; height--) {
238 memcpy(dst, src, bytewidth);
245 const uint8_t *src_data[4],
const int src_linesizes[4],
256 src_data[0], src_linesizes[0],
259 memcpy(dst_data[1], src_data[1], 4*256);
261 int i, planes_nb = 0;
266 for (i = 0; i < planes_nb; i++) {
269 if (i == 1 || i == 2) {
273 src_data[i], src_linesizes[i],