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Diffstat (limited to 'ffmpeg/libavformat/jacosubdec.c')
-rw-r--r--ffmpeg/libavformat/jacosubdec.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/ffmpeg/libavformat/jacosubdec.c b/ffmpeg/libavformat/jacosubdec.c
deleted file mode 100644
index e77ab40..0000000
--- a/ffmpeg/libavformat/jacosubdec.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * Copyright (c) 2012 Clément Bœsch
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * JACOsub subtitle demuxer
- * @see http://unicorn.us.com/jacosub/jscripts.html
- * @todo Support P[ALETTE] directive.
- */
-
-#include "avformat.h"
-#include "internal.h"
-#include "subtitles.h"
-#include "libavcodec/internal.h"
-#include "libavcodec/jacosub.h"
-#include "libavutil/avstring.h"
-#include "libavutil/bprint.h"
-#include "libavutil/intreadwrite.h"
-
-typedef struct {
- int shift;
- unsigned timeres;
- FFDemuxSubtitlesQueue q;
-} JACOsubContext;
-
-static int timed_line(const char *ptr)
-{
- char c;
- int fs, fe;
- return (sscanf(ptr, "%*u:%*u:%*u.%*u %*u:%*u:%*u.%*u %c", &c) == 1 ||
- (sscanf(ptr, "@%u @%u %c", &fs, &fe, &c) == 3 && fs < fe));
-}
-
-static int jacosub_probe(AVProbeData *p)
-{
- const char *ptr = p->buf;
- const char *ptr_end = p->buf + p->buf_size;
-
- if (AV_RB24(ptr) == 0xEFBBBF)
- ptr += 3; /* skip UTF-8 BOM */
-
- while (ptr < ptr_end) {
- while (jss_whitespace(*ptr))
- ptr++;
- if (*ptr != '#' && *ptr != '\n') {
- if (timed_line(ptr))
- return AVPROBE_SCORE_EXTENSION + 1;
- return 0;
- }
- ptr += ff_subtitles_next_line(ptr);
- }
- return 0;
-}
-
-static const char * const cmds[] = {
- "CLOCKPAUSE",
- "DIRECTIVE",
- "FONT",
- "HRES",
- "INCLUDE",
- "PALETTE",
- "QUANTIZE",
- "RAMP",
- "SHIFT",
- "TIMERES",
-};
-
-static int get_jss_cmd(char k)
-{
- int i;
-
- k = av_toupper(k);
- for (i = 0; i < FF_ARRAY_ELEMS(cmds); i++)
- if (k == cmds[i][0])
- return i;
- return -1;
-}
-
-static int jacosub_read_close(AVFormatContext *s)
-{
- JACOsubContext *jacosub = s->priv_data;
- ff_subtitles_queue_clean(&jacosub->q);
- return 0;
-}
-
-static const char *read_ts(JACOsubContext *jacosub, const char *buf,
- int64_t *start, int *duration)
-{
- int len;
- unsigned hs, ms, ss, fs; // hours, minutes, seconds, frame start
- unsigned he, me, se, fe; // hours, minutes, seconds, frame end
- int ts_start, ts_end;
-
- /* timed format */
- if (sscanf(buf, "%u:%u:%u.%u %u:%u:%u.%u %n",
- &hs, &ms, &ss, &fs,
- &he, &me, &se, &fe, &len) == 8) {
- ts_start = (hs*3600 + ms*60 + ss) * jacosub->timeres + fs;
- ts_end = (he*3600 + me*60 + se) * jacosub->timeres + fe;
- goto shift_and_ret;
- }
-
- /* timestamps format */
- if (sscanf(buf, "@%u @%u %n", &ts_start, &ts_end, &len) == 2)
- goto shift_and_ret;
-
- return NULL;
-
-shift_and_ret:
- ts_start = (ts_start + jacosub->shift) * 100 / jacosub->timeres;
- ts_end = (ts_end + jacosub->shift) * 100 / jacosub->timeres;
- *start = ts_start;
- *duration = ts_start + ts_end;
- return buf + len;
-}
-
-static int get_shift(int timeres, const char *buf)
-{
- int sign = 1;
- int a = 0, b = 0, c = 0, d = 0;
-#define SSEP "%*1[.:]"
- int n = sscanf(buf, "%d"SSEP"%d"SSEP"%d"SSEP"%d", &a, &b, &c, &d);
-#undef SSEP
-
- if (*buf == '-' || a < 0) {
- sign = -1;
- a = FFABS(a);
- }
-
- switch (n) {
- case 4: return sign * ((a*3600 + b*60 + c) * timeres + d);
- case 3: return sign * (( a*60 + b) * timeres + c);
- case 2: return sign * (( a) * timeres + b);
- }
-
- return 0;
-}
-
-static int jacosub_read_header(AVFormatContext *s)
-{
- AVBPrint header;
- AVIOContext *pb = s->pb;
- char line[JSS_MAX_LINESIZE];
- JACOsubContext *jacosub = s->priv_data;
- int shift_set = 0; // only the first shift matters
- int merge_line = 0;
- int i, ret;
-
- AVStream *st = avformat_new_stream(s, NULL);
- if (!st)
- return AVERROR(ENOMEM);
- avpriv_set_pts_info(st, 64, 1, 100);
- st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
- st->codec->codec_id = AV_CODEC_ID_JACOSUB;
-
- jacosub->timeres = 30;
-
- av_bprint_init(&header, 1024+FF_INPUT_BUFFER_PADDING_SIZE, 4096);
-
- while (!url_feof(pb)) {
- int cmd_len;
- const char *p = line;
- int64_t pos = avio_tell(pb);
- int len = ff_get_line(pb, line, sizeof(line));
-
- p = jss_skip_whitespace(p);
-
- /* queue timed line */
- if (merge_line || timed_line(p)) {
- AVPacket *sub;
-
- sub = ff_subtitles_queue_insert(&jacosub->q, line, len, merge_line);
- if (!sub)
- return AVERROR(ENOMEM);
- sub->pos = pos;
- merge_line = len > 1 && !strcmp(&line[len - 2], "\\\n");
- continue;
- }
-
- /* skip all non-compiler commands and focus on the command */
- if (*p != '#')
- continue;
- p++;
- i = get_jss_cmd(p[0]);
- if (i == -1)
- continue;
-
- /* trim command + spaces */
- cmd_len = strlen(cmds[i]);
- if (av_strncasecmp(p, cmds[i], cmd_len) == 0)
- p += cmd_len;
- else
- p++;
- p = jss_skip_whitespace(p);
-
- /* handle commands which affect the whole script */
- switch (cmds[i][0]) {
- case 'S': // SHIFT command affect the whole script...
- if (!shift_set) {
- jacosub->shift = get_shift(jacosub->timeres, p);
- shift_set = 1;
- }
- av_bprintf(&header, "#S %s", p);
- break;
- case 'T': // ...but must be placed after TIMERES
- jacosub->timeres = strtol(p, NULL, 10);
- if (!jacosub->timeres)
- jacosub->timeres = 30;
- else
- av_bprintf(&header, "#T %s", p);
- break;
- }
- }
-
- /* general/essential directives in the extradata */
- ret = avpriv_bprint_to_extradata(st->codec, &header);
- if (ret < 0)
- return ret;
-
- /* SHIFT and TIMERES affect the whole script so packet timing can only be
- * done in a second pass */
- for (i = 0; i < jacosub->q.nb_subs; i++) {
- AVPacket *sub = &jacosub->q.subs[i];
- read_ts(jacosub, sub->data, &sub->pts, &sub->duration);
- }
- ff_subtitles_queue_finalize(&jacosub->q);
-
- return 0;
-}
-
-static int jacosub_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- JACOsubContext *jacosub = s->priv_data;
- return ff_subtitles_queue_read_packet(&jacosub->q, pkt);
-}
-
-static int jacosub_read_seek(AVFormatContext *s, int stream_index,
- int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
-{
- JACOsubContext *jacosub = s->priv_data;
- return ff_subtitles_queue_seek(&jacosub->q, s, stream_index,
- min_ts, ts, max_ts, flags);
-}
-
-AVInputFormat ff_jacosub_demuxer = {
- .name = "jacosub",
- .long_name = NULL_IF_CONFIG_SMALL("JACOsub subtitle format"),
- .priv_data_size = sizeof(JACOsubContext),
- .read_probe = jacosub_probe,
- .read_header = jacosub_read_header,
- .read_packet = jacosub_read_packet,
- .read_seek2 = jacosub_read_seek,
- .read_close = jacosub_read_close,
-};
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