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avformat/dvdvideodec: fix -pgc and -pg options

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Rebased on top of recently merged fixes (should apply correctly now).

In merged DVD patch, -pgc and -pg options were broken. While these are
rather advanced options, they are the only means to get content for
some strangely authored discs.

Signed-off-by: Marth64 <marth64@proxyid.net>
This commit is contained in:
Marth64 2024-03-03 02:45:41 -06:00 committed by Stefano Sabatini
parent e30369bc1c
commit 01476f752a
1 changed files with 13 additions and 10 deletions
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23
libavformat/dvdvideodec.c
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@ -507,11 +507,12 @@ static int dvdvideo_play_next_ps_block(AVFormatContext *s, DVDVideoPlaybackState
state->celln, e_cell->cellN, is_cell_promising);
if (!state->in_ps && !state->in_pgc) {
if (cur_title == c->opt_title &&
cur_ptt == c->opt_chapter_start &&
cur_pgcn == state->pgcn &&
cur_pgn == state->entry_pgn &&
if (cur_title == c->opt_title &&
(c->opt_pgc || cur_ptt == c->opt_chapter_start) &&
cur_pgcn == state->pgcn &&
cur_pgn == state->entry_pgn &&
is_cell_promising) {
state->in_pgc = 1;
}
@ -1254,19 +1255,21 @@ static int dvdvideo_read_header(AVFormatContext *s)
}
if (c->opt_pgc) {
if (c->opt_pg == 0)
if (c->opt_pg == 0) {
av_log(s, AV_LOG_ERROR, "Invalid coordinates. If -pgc is set, -pg must be set too.\n");
else if (c->opt_chapter_start > 1 || c->opt_chapter_end > 0 || c->opt_preindex)
return AVERROR(EINVAL);
} else if (c->opt_chapter_start > 1 || c->opt_chapter_end > 0 || c->opt_preindex) {
av_log(s, AV_LOG_ERROR, "-pgc is not compatible with the -preindex or "
"-chapter_start/-chapter_end options\n");
return AVERROR(EINVAL);
return AVERROR(EINVAL);
}
}
if ((ret = dvdvideo_ifo_open(s)) < 0)
return ret;
if (c->opt_preindex && (ret = dvdvideo_chapters_setup_preindex(s)) < 0)
if (!c->opt_pgc && c->opt_preindex && (ret = dvdvideo_chapters_setup_preindex(s)) < 0)
return ret;
if ((ret = dvdvideo_play_open(s, &c->play_state)) < 0 ||
@ -1276,7 +1279,7 @@ static int dvdvideo_read_header(AVFormatContext *s)
(ret = dvdvideo_subp_stream_add_all(s)) < 0)
return ret;
if (!c->opt_preindex)
if (!c->opt_pgc && !c->opt_preindex)
return dvdvideo_chapters_setup_simple(s);
return 0;