41 int r_add, g_add, b_add;
43 for (i = num_values; i > 0; i--) {
49 *rgba++ = (*alpha++ << 24) | (r << 16) | (g << 8) | b;
58 for (t = 1; v < t && t <= 0x40; t <<= 2)
90 const uint8_t *buf,
int start,
int buf_size,
int is_8bit)
97 bit_len = (buf_size - start) * 8;
110 len =
FFMIN(len, w - x);
111 memset(d + x, color, len);
127 uint32_t *rgba_palette,
130 uint32_t subtitle_color)
132 uint8_t color_used[16] = { 0 };
133 int nb_opaque_colors, i,
level, j,
r,
g,
b;
136 for (i = 0; i < 4; i++)
137 rgba_palette[i] = (ctx->
palette[colormap[i]] & 0x00ffffff)
138 | ((alpha[i] * 17) << 24);
142 for(i = 0; i < 4; i++)
145 nb_opaque_colors = 0;
146 for(i = 0; i < 4; i++) {
147 if (alpha[i] != 0 && !color_used[colormap[i]]) {
148 color_used[colormap[i]] = 1;
153 if (nb_opaque_colors == 0)
156 j = nb_opaque_colors;
157 memset(color_used, 0, 16);
158 for(i = 0; i < 4; i++) {
160 if (!color_used[colormap[i]]) {
161 level = (0xff * j) / nb_opaque_colors;
162 r = (((subtitle_color >> 16) & 0xff) *
level) >> 8;
163 g = (((subtitle_color >> 8) & 0xff) *
level) >> 8;
164 b = (((subtitle_color >> 0) & 0xff) *
level) >> 8;
165 rgba_palette[i] = b | (g << 8) | (r << 16) | ((alpha[i] * 17) << 24);
166 color_used[colormap[i]] = (i + 1);
169 rgba_palette[i] = (rgba_palette[color_used[colormap[i]] - 1] & 0x00ffffff) |
170 ((alpha[i] * 17) << 24);
176 #define READ_OFFSET(a) (big_offsets ? AV_RB32(a) : AV_RB16(a))
179 const uint8_t *buf,
int buf_size)
181 int cmd_pos, pos, cmd, x1, y1, x2, y2, offset1, offset2, next_cmd_pos;
182 int big_offsets, offset_size, is_8bit = 0;
183 const uint8_t *yuv_palette = 0;
184 uint8_t colormap[4] = { 0 }, alpha[256] = { 0 };
191 memset(sub_header, 0,
sizeof(*sub_header));
205 while (cmd_pos > 0 && cmd_pos < buf_size - 2 - offset_size) {
208 av_dlog(
NULL,
"cmd_pos=0x%04x next=0x%04x date=%d\n",
209 cmd_pos, next_cmd_pos, date);
210 pos = cmd_pos + 2 + offset_size;
213 x1 = y1 = x2 = y2 = 0;
214 while (pos < buf_size) {
232 if ((buf_size - pos) < 2)
234 colormap[3] = buf[pos] >> 4;
235 colormap[2] = buf[pos] & 0x0f;
236 colormap[1] = buf[pos + 1] >> 4;
237 colormap[0] = buf[pos + 1] & 0x0f;
242 if ((buf_size - pos) < 2)
244 alpha[3] = buf[pos] >> 4;
245 alpha[2] = buf[pos] & 0x0f;
246 alpha[1] = buf[pos + 1] >> 4;
247 alpha[0] = buf[pos + 1] & 0x0f;
249 av_dlog(
NULL,
"alpha=%x%x%x%x\n", alpha[0],alpha[1],alpha[2],alpha[3]);
253 if ((buf_size - pos) < 6)
255 x1 = (buf[pos] << 4) | (buf[pos + 1] >> 4);
256 x2 = ((buf[pos + 1] & 0x0f) << 8) | buf[pos + 2];
257 y1 = (buf[pos + 3] << 4) | (buf[pos + 4] >> 4);
258 y2 = ((buf[pos + 4] & 0x0f) << 8) | buf[pos + 5];
261 av_dlog(
NULL,
"x1=%d x2=%d y1=%d y2=%d\n", x1, x2, y1, y2);
265 if ((buf_size - pos) < 4)
268 offset2 =
AV_RB16(buf + pos + 2);
269 av_dlog(
NULL,
"offset1=0x%04x offset2=0x%04x\n", offset1, offset2);
273 if ((buf_size - pos) < 8)
276 offset2 =
AV_RB32(buf + pos + 4);
277 av_dlog(
NULL,
"offset1=0x%04x offset2=0x%04x\n", offset1, offset2);
283 if ((buf_size - pos) < 768)
285 yuv_palette = buf + pos;
290 if ((buf_size - pos) < 256)
292 for (i = 0; i < 256; i++)
293 alpha[i] = 0xFF - buf[pos+i];
300 av_dlog(
NULL,
"unrecognised subpicture command 0x%x\n", cmd);
316 if (w > 0 && h > 0) {
318 for (i = 0; i < sub_header->
num_rects; i++) {
333 buf, offset1, buf_size, is_8bit);
335 buf, offset2, buf_size, is_8bit);
338 if (yuv_palette == 0)
346 colormap, alpha, 0xffff00);
348 sub_header->
rects[0]->
x = x1;
349 sub_header->
rects[0]->
y = y1;
350 sub_header->
rects[0]->
w = w;
351 sub_header->
rects[0]->
h = h;
356 if (next_cmd_pos == cmd_pos)
358 cmd_pos = next_cmd_pos;
364 for (i = 0; i < sub_header->
num_rects; i++) {
379 for(i = 0; i < n; i++) {
380 if (!transp_color[*buf])
390 uint8_t transp_color[256] = { 0 };
391 int y1, y2, x1, x2, y, w, h, i;
403 1, s->
rects[0]->
w, transp_color))
405 if (y1 == s->
rects[0]->
h) {
413 s->
rects[0]->
w, transp_color))
417 s->
rects[0]->
h, transp_color))
428 for(y = 0; y < h; y++) {
442 static void ppm_save(
const char *filename,
uint8_t *bitmap,
int w,
int h,
443 uint32_t *rgba_palette)
448 f = fopen(filename,
"w");
457 for(y = 0; y < h; y++) {
458 for(x = 0; x < w; x++) {
459 v = rgba_palette[bitmap[y * w + x]];
460 putc((v >> 16) & 0xff, f);
461 putc((v >> 8) & 0xff, f);
462 putc((v >> 0) & 0xff, f);
470 void *
data,
int *data_size,
475 int buf_size = avpkt->
size;
518 if (strncmp(
"palette:", cur, 8) == 0) {
522 for (i = 0; i < 16; i++) {
523 ctx->
palette[i] = strtoul(p, &p, 16);
527 }
else if (!strncmp(
"size:", cur, 5)) {
529 if (sscanf(cur + 5,
"%dx%d", &w, &h) == 2) {
535 cur += strcspn(cur,
"\n\r");
536 cur += strspn(cur,
"\n\r");