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Diffstat (limited to 'ffmpeg/libavformat/subtitles.c')
-rw-r--r--ffmpeg/libavformat/subtitles.c283
1 files changed, 0 insertions, 283 deletions
diff --git a/ffmpeg/libavformat/subtitles.c b/ffmpeg/libavformat/subtitles.c
deleted file mode 100644
index fce2bf1..0000000
--- a/ffmpeg/libavformat/subtitles.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * Copyright (c) 2012-2013 Clément Bœsch <u pkh me>
- *
- * 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
- */
-
-#include "avformat.h"
-#include "subtitles.h"
-#include "libavutil/avassert.h"
-#include "libavutil/avstring.h"
-
-AVPacket *ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q,
- const uint8_t *event, int len, int merge)
-{
- AVPacket *subs, *sub;
-
- if (merge && q->nb_subs > 0) {
- /* merge with previous event */
-
- int old_len;
- sub = &q->subs[q->nb_subs - 1];
- old_len = sub->size;
- if (av_grow_packet(sub, len) < 0)
- return NULL;
- memcpy(sub->data + old_len, event, len);
- } else {
- /* new event */
-
- if (q->nb_subs >= INT_MAX/sizeof(*q->subs) - 1)
- return NULL;
- subs = av_fast_realloc(q->subs, &q->allocated_size,
- (q->nb_subs + 1) * sizeof(*q->subs));
- if (!subs)
- return NULL;
- q->subs = subs;
- sub = &subs[q->nb_subs++];
- if (av_new_packet(sub, len) < 0)
- return NULL;
- sub->flags |= AV_PKT_FLAG_KEY;
- sub->pts = sub->dts = 0;
- memcpy(sub->data, event, len);
- }
- return sub;
-}
-
-static int cmp_pkt_sub_ts_pos(const void *a, const void *b)
-{
- const AVPacket *s1 = a;
- const AVPacket *s2 = b;
- if (s1->pts == s2->pts) {
- if (s1->pos == s2->pos)
- return 0;
- return s1->pos > s2->pos ? 1 : -1;
- }
- return s1->pts > s2->pts ? 1 : -1;
-}
-
-static int cmp_pkt_sub_pos_ts(const void *a, const void *b)
-{
- const AVPacket *s1 = a;
- const AVPacket *s2 = b;
- if (s1->pos == s2->pos) {
- if (s1->pts == s2->pts)
- return 0;
- return s1->pts > s2->pts ? 1 : -1;
- }
- return s1->pos > s2->pos ? 1 : -1;
-}
-
-void ff_subtitles_queue_finalize(FFDemuxSubtitlesQueue *q)
-{
- int i;
-
- qsort(q->subs, q->nb_subs, sizeof(*q->subs),
- q->sort == SUB_SORT_TS_POS ? cmp_pkt_sub_ts_pos
- : cmp_pkt_sub_pos_ts);
- for (i = 0; i < q->nb_subs; i++)
- if (q->subs[i].duration == -1 && i < q->nb_subs - 1)
- q->subs[i].duration = q->subs[i + 1].pts - q->subs[i].pts;
-}
-
-int ff_subtitles_queue_read_packet(FFDemuxSubtitlesQueue *q, AVPacket *pkt)
-{
- AVPacket *sub = q->subs + q->current_sub_idx;
-
- if (q->current_sub_idx == q->nb_subs)
- return AVERROR_EOF;
- if (av_copy_packet(pkt, sub) < 0) {
- return AVERROR(ENOMEM);
- }
-
- pkt->dts = pkt->pts;
- q->current_sub_idx++;
- return 0;
-}
-
-static int search_sub_ts(const FFDemuxSubtitlesQueue *q, int64_t ts)
-{
- int s1 = 0, s2 = q->nb_subs - 1;
-
- if (s2 < s1)
- return AVERROR(ERANGE);
-
- for (;;) {
- int mid;
-
- if (s1 == s2)
- return s1;
- if (s1 == s2 - 1)
- return q->subs[s1].pts <= q->subs[s2].pts ? s1 : s2;
- mid = (s1 + s2) / 2;
- if (q->subs[mid].pts <= ts)
- s1 = mid;
- else
- s2 = mid;
- }
-}
-
-int ff_subtitles_queue_seek(FFDemuxSubtitlesQueue *q, AVFormatContext *s, int stream_index,
- int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
-{
- if (flags & AVSEEK_FLAG_BYTE) {
- return AVERROR(ENOSYS);
- } else if (flags & AVSEEK_FLAG_FRAME) {
- if (ts < 0 || ts >= q->nb_subs)
- return AVERROR(ERANGE);
- q->current_sub_idx = ts;
- } else {
- int i, idx = search_sub_ts(q, ts);
- int64_t ts_selected;
-
- if (idx < 0)
- return idx;
- for (i = idx; i < q->nb_subs && q->subs[i].pts < min_ts; i++)
- if (stream_index == -1 || q->subs[i].stream_index == stream_index)
- idx = i;
- for (i = idx; i > 0 && q->subs[i].pts > max_ts; i--)
- if (stream_index == -1 || q->subs[i].stream_index == stream_index)
- idx = i;
-
- ts_selected = q->subs[idx].pts;
- if (ts_selected < min_ts || ts_selected > max_ts)
- return AVERROR(ERANGE);
-
- /* look back in the latest subtitles for overlapping subtitles */
- for (i = idx - 1; i >= 0; i--) {
- int64_t pts = q->subs[i].pts;
- if (q->subs[i].duration <= 0 ||
- (stream_index != -1 && q->subs[i].stream_index != stream_index))
- continue;
- if (pts >= min_ts && pts > ts_selected - q->subs[i].duration)
- idx = i;
- else
- break;
- }
-
- /* If the queue is used to store multiple subtitles streams (like with
- * VobSub) and the stream index is not specified, we need to make sure
- * to focus on the smallest file position offset for a same timestamp;
- * queue is ordered by pts and then filepos, so we can take the first
- * entry for a given timestamp. */
- if (stream_index == -1)
- while (idx > 0 && q->subs[idx - 1].pts == q->subs[idx].pts)
- idx--;
-
- q->current_sub_idx = idx;
- }
- return 0;
-}
-
-void ff_subtitles_queue_clean(FFDemuxSubtitlesQueue *q)
-{
- int i;
-
- for (i = 0; i < q->nb_subs; i++)
- av_free_packet(&q->subs[i]);
- av_freep(&q->subs);
- q->nb_subs = q->allocated_size = q->current_sub_idx = 0;
-}
-
-int ff_smil_extract_next_chunk(AVIOContext *pb, AVBPrint *buf, char *c)
-{
- int i = 0;
- char end_chr;
-
- if (!*c) // cached char?
- *c = avio_r8(pb);
- if (!*c)
- return 0;
-
- end_chr = *c == '<' ? '>' : '<';
- do {
- av_bprint_chars(buf, *c, 1);
- *c = avio_r8(pb);
- i++;
- } while (*c != end_chr && *c);
- if (end_chr == '>') {
- av_bprint_chars(buf, '>', 1);
- *c = 0;
- }
- return i;
-}
-
-const char *ff_smil_get_attr_ptr(const char *s, const char *attr)
-{
- int in_quotes = 0;
- const int len = strlen(attr);
-
- while (*s) {
- while (*s) {
- if (!in_quotes && av_isspace(*s))
- break;
- in_quotes ^= *s == '"'; // XXX: support escaping?
- s++;
- }
- while (av_isspace(*s))
- s++;
- if (!av_strncasecmp(s, attr, len) && s[len] == '=')
- return s + len + 1 + (s[len + 1] == '"');
- }
- return NULL;
-}
-
-static inline int is_eol(char c)
-{
- return c == '\r' || c == '\n';
-}
-
-void ff_subtitles_read_chunk(AVIOContext *pb, AVBPrint *buf)
-{
- char eol_buf[5], last_was_cr = 0;
- int n = 0, i = 0, nb_eol = 0;
-
- av_bprint_clear(buf);
-
- for (;;) {
- char c = avio_r8(pb);
-
- if (!c)
- break;
-
- /* ignore all initial line breaks */
- if (n == 0 && is_eol(c))
- continue;
-
- /* line break buffering: we don't want to add the trailing \r\n */
- if (is_eol(c)) {
- nb_eol += c == '\n' || last_was_cr;
- if (nb_eol == 2)
- break;
- eol_buf[i++] = c;
- if (i == sizeof(eol_buf) - 1)
- break;
- last_was_cr = c == '\r';
- continue;
- }
-
- /* only one line break followed by data: we flush the line breaks
- * buffer */
- if (i) {
- eol_buf[i] = 0;
- av_bprintf(buf, "%s", eol_buf);
- i = nb_eol = 0;
- }
-
- av_bprint_chars(buf, c, 1);
- n++;
- }
-}
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