25 #include "libavutil/opt.h"
26 #include "libavutil/imgutils.h"
27 #include "libavutil/avstring.h"
46 int r_add, g_add, b_add;
48 for (i = num_values; i > 0; i--) {
54 *rgba++ = (*alpha++ << 24) | (r << 16) | (g << 8) | b;
63 for (t = 1; v < t && t <= 0x40; t <<= 2)
95 const uint8_t *buf,
int start,
int buf_size,
int is_8bit)
102 if (start >= buf_size)
105 if (w <= 0 || h <= 0)
108 bit_len = (buf_size - start) * 8;
121 len =
FFMIN(len, w - x);
122 memset(d + x, color, len);
138 uint32_t *rgba_palette,
139 uint32_t subtitle_color)
141 static const uint8_t level_map[4][4] = {
147 {0x00, 0x55, 0xaa, 0xff},
149 uint8_t color_used[16] = { 0 };
150 int nb_opaque_colors, i,
level, j,
r,
g,
b;
154 for(i = 0; i < 4; i++)
155 rgba_palette[i] = (ctx->
palette[colormap[i]] & 0x00ffffff)
156 | ((
alpha[i] * 17
U) << 24);
160 for(i = 0; i < 4; i++)
163 nb_opaque_colors = 0;
164 for(i = 0; i < 4; i++) {
165 if (
alpha[i] != 0 && !color_used[colormap[i]]) {
166 color_used[colormap[i]] = 1;
171 if (nb_opaque_colors == 0)
175 memset(color_used, 0, 16);
176 for(i = 0; i < 4; i++) {
178 if (!color_used[colormap[i]]) {
179 level = level_map[nb_opaque_colors][j];
180 r = (((subtitle_color >> 16) & 0xff) *
level) >> 8;
181 g = (((subtitle_color >> 8) & 0xff) *
level) >> 8;
182 b = (((subtitle_color >> 0) & 0xff) *
level) >> 8;
183 rgba_palette[i] = b | (g << 8) | (r << 16) | ((
alpha[i] * 17) << 24);
184 color_used[colormap[i]] = (i + 1);
187 rgba_palette[i] = (rgba_palette[color_used[colormap[i]] - 1] & 0x00ffffff) |
188 ((
alpha[i] * 17) << 24);
194 #define READ_OFFSET(a) (big_offsets ? AV_RB32(a) : AV_RB16(a))
197 const uint8_t *buf,
int buf_size)
199 int cmd_pos, pos, cmd, x1, y1, x2, y2, offset1, offset2, next_cmd_pos;
200 int big_offsets, offset_size, is_8bit = 0;
201 const uint8_t *yuv_palette = 0;
222 while (cmd_pos > 0 && cmd_pos < buf_size - 2 - offset_size) {
225 av_dlog(
NULL,
"cmd_pos=0x%04x next=0x%04x date=%d\n",
226 cmd_pos, next_cmd_pos, date);
227 pos = cmd_pos + 2 + offset_size;
230 x1 = y1 = x2 = y2 = 0;
231 while (pos < buf_size) {
249 if ((buf_size - pos) < 2)
251 colormap[3] = buf[pos] >> 4;
252 colormap[2] = buf[pos] & 0x0f;
253 colormap[1] = buf[pos + 1] >> 4;
254 colormap[0] = buf[pos + 1] & 0x0f;
259 if ((buf_size - pos) < 2)
261 alpha[3] = buf[pos] >> 4;
262 alpha[2] = buf[pos] & 0x0f;
263 alpha[1] = buf[pos + 1] >> 4;
264 alpha[0] = buf[pos + 1] & 0x0f;
270 if ((buf_size - pos) < 6)
272 x1 = (buf[pos] << 4) | (buf[pos + 1] >> 4);
273 x2 = ((buf[pos + 1] & 0x0f) << 8) | buf[pos + 2];
274 y1 = (buf[pos + 3] << 4) | (buf[pos + 4] >> 4);
275 y2 = ((buf[pos + 4] & 0x0f) << 8) | buf[pos + 5];
278 av_dlog(
NULL,
"x1=%d x2=%d y1=%d y2=%d\n", x1, x2, y1, y2);
282 if ((buf_size - pos) < 4)
285 offset2 =
AV_RB16(buf + pos + 2);
286 av_dlog(
NULL,
"offset1=0x%04x offset2=0x%04x\n", offset1, offset2);
290 if ((buf_size - pos) < 8)
293 offset2 =
AV_RB32(buf + pos + 4);
294 av_dlog(
NULL,
"offset1=0x%04x offset2=0x%04x\n", offset1, offset2);
300 if ((buf_size - pos) < 768)
302 yuv_palette = buf + pos;
307 if ((buf_size - pos) < 256)
309 for (i = 0; i < 256; i++)
310 alpha[i] = 0xFF - buf[pos+i];
317 av_dlog(
NULL,
"unrecognised subpicture command 0x%x\n", cmd);
333 if (w > 0 && h > 0) {
335 for (i = 0; i < sub_header->
num_rects; i++) {
350 buf, offset1, buf_size, is_8bit) < 0)
353 buf, offset2, buf_size, is_8bit) < 0)
357 if (yuv_palette == 0)
366 sub_header->
rects[0]->
x = x1;
367 sub_header->
rects[0]->
y = y1;
368 sub_header->
rects[0]->
w = w;
369 sub_header->
rects[0]->
h = h;
375 if (next_cmd_pos < cmd_pos) {
379 if (next_cmd_pos == cmd_pos)
381 cmd_pos = next_cmd_pos;
387 for (i = 0; i < sub_header->
num_rects; i++) {
402 for(i = 0; i < n; i++) {
403 if (!transp_color[*buf])
413 uint8_t transp_color[256] = { 0 };
414 int y1, y2, x1, x2,
y, w, h, i;
426 1, s->
rects[0]->
w, transp_color))
428 if (y1 == s->
rects[0]->
h) {
436 s->
rects[0]->
w, transp_color))
440 s->
rects[0]->
h, transp_color))
451 for(y = 0; y < h; y++) {
468 static void ppm_save(
const char *filename,
uint8_t *bitmap,
int w,
int h,
469 uint32_t *rgba_palette)
474 f = fopen(filename,
"w");
483 for(y = 0; y < h; y++) {
484 for(x = 0; x < w; x++) {
485 v = rgba_palette[bitmap[y * w + x]];
486 putc((v >> 16) & 0xff, f);
487 putc((v >> 8) & 0xff, f);
488 putc((v >> 0) & 0xff, f);
496 void *
data,
int *data_size,
501 int buf_size = avpkt->
size;
534 ctx->
palette[i] = strtoul(p, &p, 16);
543 char *dataorig, *
data;
555 int pos = strcspn(
data,
"\n\r");
556 if (pos==0 && *
data==0)
559 if (strncmp(
"palette:",
data, 8) == 0) {
561 }
else if (strncmp(
"size:",
data, 5) == 0) {
563 if (sscanf(
data + 5,
"%dx%d", &w, &h) == 2 &&
597 #define OFFSET(field) offsetof(DVDSubContext, field)
598 #define VD AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM
618 .priv_class = &
class,