#include "avformat.h"
#include "internal.h"
#include "subtitles.h"
+#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/intreadwrite.h"
{
SCCContext *scc = s->priv_data;
AVStream *st = avformat_new_stream(s, NULL);
- char line[4096], line2[4096];
- int count = 0, ret = 0;
- ptrdiff_t len2, len;
+ char line2[4096], line[4096];
+ int64_t pos, ts, next_ts = AV_NOPTS_VALUE;
+ ptrdiff_t len;
uint8_t out[4096];
FFTextReader tr;
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
st->codecpar->codec_id = AV_CODEC_ID_EIA_608;
- while (!ff_text_eof(&tr)) {
- const int64_t pos = ff_text_pos(&tr);
+ while (!ff_text_eof(&tr) || next_ts == AV_NOPTS_VALUE || line2[0]) {
char *saveptr = NULL, *lline;
- int hh1, mm1, ss1, fs1, i;
- int hh2, mm2, ss2, fs2;
- int64_t ts_start, ts_end;
+ int hh, mm, ss, fs, i;
AVPacket *sub;
- if (count == 0) {
+ if (next_ts == AV_NOPTS_VALUE) {
while (!ff_text_eof(&tr)) {
len = ff_subtitles_read_line(&tr, line, sizeof(line));
- if (len > 13)
+ if (len <= 13)
+ continue;
+ if (!strncmp(line, "Scenarist_SCC V1.0", 18))
+ continue;
+ if (av_sscanf(line, "%d:%d:%d%*[:;]%d", &hh, &mm, &ss, &fs) == 4)
break;
}
- }
- if (!strncmp(line, "Scenarist_SCC V1.0", 18))
- continue;
- if (sscanf(line, "%d:%d:%d%*[:;]%d", &hh1, &mm1, &ss1, &fs1) != 4)
- continue;
+ ts = (hh * 3600LL + mm * 60LL + ss) * 1000LL + fs * 33LL;
- ts_start = (hh1 * 3600LL + mm1 * 60LL + ss1) * 1000LL + fs1 * 33;
+ while (!ff_text_eof(&tr)) {
+ len = ff_subtitles_read_line(&tr, line2, sizeof(line2));
+ if (len <= 13)
+ continue;
- while (!ff_text_eof(&tr)) {
- len2 = ff_subtitles_read_line(&tr, line2, sizeof(line2));
- if (len2 > 13)
- break;
+ if (av_sscanf(line2, "%d:%d:%d%*[:;]%d", &hh, &mm, &ss, &fs) == 4)
+ break;
+ }
+ } else {
+ memmove(line, line2, sizeof(line));
+ line2[0] = 0;
+
+ while (!ff_text_eof(&tr)) {
+ len = ff_subtitles_read_line(&tr, line2, sizeof(line2));
+ if (len <= 13)
+ continue;
+
+ if (av_sscanf(line2, "%d:%d:%d%*[:;]%d", &hh, &mm, &ss, &fs) == 4)
+ break;
+ }
}
- if (sscanf(line2, "%d:%d:%d%*[:;]%d", &hh2, &mm2, &ss2, &fs2) != 4)
- continue;
- ts_end = (hh2 * 3600LL + mm2 * 60LL + ss2) * 1000LL + fs2 * 33;
- count++;
+ next_ts = (hh * 3600LL + mm * 60LL + ss) * 1000LL + fs * 33LL;
+ pos = ff_text_pos(&tr);
lline = (char *)&line;
lline += 12;
for (i = 0; i < 4095; i += 3) {
char *ptr = av_strtok(lline, " ", &saveptr);
char c1, c2, c3, c4;
+ uint8_t o1, o2;
if (!ptr)
break;
- if (sscanf(ptr, "%c%c%c%c", &c1, &c2, &c3, &c4) != 4)
+ if (av_sscanf(ptr, "%c%c%c%c", &c1, &c2, &c3, &c4) != 4)
break;
+ o1 = convert(c2) | (convert(c1) << 4);
+ o2 = convert(c4) | (convert(c3) << 4);
lline = NULL;
+
+ if (i > 12 && o1 == 0x94 && o2 == 0x20 && saveptr &&
+ (av_strncasecmp(saveptr, "942f", 4) && !av_strncasecmp(saveptr, "942c", 4))) {
+
+ out[i] = 0;
+
+ sub = ff_subtitles_queue_insert(&scc->q, out, i, 0);
+ if (!sub)
+ goto fail;
+
+ sub->pos = pos;
+ pos += i;
+ sub->pts = ts;
+ sub->duration = i * 11;
+ ts += sub->duration;
+ i = 0;
+ }
+
out[i+0] = 0xfc;
- out[i+1] = convert(c2) | (convert(c1) << 4);
- out[i+2] = convert(c4) | (convert(c3) << 4);
+ out[i+1] = o1;
+ out[i+2] = o2;
}
+
out[i] = 0;
sub = ff_subtitles_queue_insert(&scc->q, out, i, 0);
if (!sub)
- return AVERROR(ENOMEM);
+ goto fail;
sub->pos = pos;
- sub->pts = ts_start;
- sub->duration = FFMAX(1200, ts_end - ts_start);
- memmove(line, line2, sizeof(line));
- FFSWAP(ptrdiff_t, len, len2);
+ sub->pts = ts;
+ sub->duration = next_ts - ts;
+ ts = next_ts;
}
ff_subtitles_queue_finalize(s, &scc->q);
- return ret;
+ return 0;
+fail:
+ ff_subtitles_queue_clean(&scc->q);
+ return AVERROR(ENOMEM);
}
static int scc_read_packet(AVFormatContext *s, AVPacket *pkt)
return 0;
}
-AVInputFormat ff_scc_demuxer = {
+const AVInputFormat ff_scc_demuxer = {
.name = "scc",
.long_name = NULL_IF_CONFIG_SMALL("Scenarist Closed Captions"),
.priv_data_size = sizeof(SCCContext),