*pq = q;
}
+static void dvb_encode_rle8(uint8_t **pq,
+ const uint8_t *bitmap, int linesize,
+ int w, int h)
+{
+ uint8_t *q;
+ int x, y, len, x1, f, color;
+
+ q = *pq;
+
+ for (y = 0; y < h; y++) {
+ *q++ = 0x12;
+
+ x = 0;
+ f = 0;
+ while (x < w) {
+ x1 = x;
+ color = bitmap[x1++];
+ while (x1 < w && bitmap[x1] == color)
+ x1++;
+ len = x1 - x;
+ if (len == 1 && color) {
+ // 00000001 to 11111111 1 pixel in colour x
+ *q++ = color;
+ } else {
+ if (color == 0x00) {
+ // 00000000 0LLLLLLL L pixels (1-127) in colour 0 (L > 0)
+ len = FFMIN(len, 127);
+ *q++ = 0x00;
+ *q++ = len;
+ } else if (len > 2) {
+ // 00000000 1LLLLLLL CCCCCCCC L pixels (3-127) in colour C (L > 2)
+ len = FFMIN(len, 127);
+ *q++ = 0x00;
+ *q++ = 0x80+len;
+ *q++ = color;
+ }
+ else if (len == 2) {
+ *q++ = color;
+ *q++ = color;
+ } else {
+ *q++ = color;
+ len = 1;
+ }
+ }
+ x += len;
+ }
+ /* end of line */
+ // 00000000 00000000 end of 8-bit/pixel_code_string
+ *q++ = 0x00;
+ *q++ = 0x00;
+ bitmap += linesize;
+ }
+ *pq = q;
+}
+
static int encode_dvb_subtitles(DVBSubtitleContext *s,
uint8_t *outbuf, AVSubtitle *h)
{
} else if (h->rects[clut_id]->nb_colors <= 16) {
/* 4 bpp, standard encoding */
bpp_index = 1;
+ } else if (h->rects[clut_id]->nb_colors <= 256) {
+ /* 8 bpp, standard encoding */
+ bpp_index = 2;
} else {
return -1;
}
} else if (h->rects[object_id]->nb_colors <= 16) {
/* 4 bpp, standard encoding */
dvb_encode_rle = dvb_encode_rle4;
+ } else if (h->rects[object_id]->nb_colors <= 256) {
+ /* 8 bpp, standard encoding */
+ dvb_encode_rle = dvb_encode_rle8;
} else {
return -1;
}