int time_out;
int compute_edt; /**< if 1 end display time calculated using pts
if 0 (Default) calculated using time out */
+ int compute_clut;
int64_t prev_start;
DVBSubRegion *region_list;
DVBSubCLUT *clut_list;
return pixels_read;
}
+static void compute_default_clut(AVPicture *frame, int w, int h)
+{
+ uint8_t list[256] = {0};
+ uint8_t list_inv[256];
+ int counttab[256] = {0};
+ int count, i, x, y;
+
+#define V(x,y) frame->data[0][(x) + (y)*frame->linesize[0]]
+ for (y = 0; y<h; y++) {
+ for (x = 0; x<w; x++) {
+ int v = V(x,y) + 1;
+ int vl = x ? V(x-1,y) + 1 : 0;
+ int vr = x+1<w ? V(x+1,y) + 1 : 0;
+ int vt = y ? V(x,y-1) + 1 : 0;
+ int vb = y+1<h ? V(x,y+1) + 1 : 0;
+ counttab[v-1] += !!((v!=vl) + (v!=vr) + (v!=vt) + (v!=vb));
+ }
+ }
+#define L(x,y) list[ frame->data[0][(x) + (y)*frame->linesize[0]] ]
+
+ for (i = 0; i<256; i++) {
+ int scoretab[256] = {0};
+ int bestscore = 0;
+ int bestv = 0;
+ for (y = 0; y<h; y++) {
+ for (x = 0; x<w; x++) {
+ int v = frame->data[0][x + y*frame->linesize[0]];
+ int l_m = list[v];
+ int l_l = x ? L(x-1, y) : 1;
+ int l_r = x+1<w ? L(x+1, y) : 1;
+ int l_t = y ? L(x, y-1) : 1;
+ int l_b = y+1<h ? L(x, y+1) : 1;
+ int score;
+ if (l_m)
+ continue;
+ scoretab[v] += l_l + l_r + l_t + l_b;
+ score = 1024LL*scoretab[v] / counttab[v];
+ if (score > bestscore) {
+ bestscore = score;
+ bestv = v;
+ }
+ }
+ }
+ if (!bestscore)
+ break;
+ list [ bestv ] = 1;
+ list_inv[ i ] = bestv;
+ }
+
+ count = i - 1;
+ for (i--; i>=0; i--) {
+ int v = i*255/count;
+ AV_WN32(frame->data[1] + 4*list_inv[i], RGBA(v/2,v,v/2,v));
+ }
+}
+
+
static int save_subtitle_set(AVCodecContext *avctx, AVSubtitle *sub, int *got_output)
{
DVBSubContext *ctx = avctx->priv_data;
memcpy(rect->pict.data[0], region->pbuf, region->buf_size);
+ if ((clut == &default_clut && ctx->compute_clut == -1) || ctx->compute_clut == 1)
+ compute_default_clut(&rect->pict, rect->w, rect->h);
+
i++;
}
}
int i;
int ret = 0;
int got_segment = 0;
+ int got_dds = 0;
ff_dlog(avctx, "DVB sub packet:\n");
case DVBSUB_DISPLAYDEFINITION_SEGMENT:
ret = dvbsub_parse_display_definition_segment(avctx, p,
segment_length);
+ got_dds = 1;
break;
case DVBSUB_DISPLAY_SEGMENT:
ret = dvbsub_display_end_segment(avctx, p, segment_length, sub, data_size);
+ if (got_segment == 15 && !got_dds && !avctx->width && !avctx->height) {
+ // Default from ETSI EN 300 743 V1.3.1 (7.2.1)
+ avctx->width = 720;
+ avctx->height = 576;
+ }
got_segment |= 16;
break;
default:
#define DS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_SUBTITLE_PARAM
static const AVOption options[] = {
{"compute_edt", "compute end of time using pts or timeout", offsetof(DVBSubContext, compute_edt), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DS},
+ {"compute_clut", "compute clut when not available(-1) or always(1) or never(0)", offsetof(DVBSubContext, compute_clut), FF_OPT_TYPE_INT, {.i64 = -1}, -1, 1, DS},
{NULL}
};
static const AVClass dvbsubdec_class = {