[FFmpeg-cvslog] Add SUP/PGS subtitle muxer
Petri Hintukainen
git at videolan.org
Sat Sep 9 13:08:17 EEST 2017
ffmpeg | branch: master | Petri Hintukainen <phintuka at users.sourceforge.net> | Tue Sep 30 11:01:17 2014 +0300| [7a6bd541528b4d00b52d422d02f01d42346e68df] | committer: Paul B Mahol
Add SUP/PGS subtitle muxer
Fixes ticket #2208
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7a6bd541528b4d00b52d422d02f01d42346e68df
---
Changelog | 1 +
doc/general.texi | 2 +-
libavformat/Makefile | 1 +
libavformat/allformats.c | 2 +-
libavformat/supenc.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
libavformat/version.h | 2 +-
6 files changed, 101 insertions(+), 3 deletions(-)
diff --git a/Changelog b/Changelog
index 189a803ed3..e5524b5c03 100644
--- a/Changelog
+++ b/Changelog
@@ -44,6 +44,7 @@ version <next>:
- drop deprecated qtkit input device (use avfoundation instead)
- despill video filter
- haas audio filter
+- SUP/PGS subtitle muxer
version 3.3:
- CrystalHD decoder moved to new decode API
diff --git a/doc/general.texi b/doc/general.texi
index 5299a9b58c..a40400612e 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -530,7 +530,7 @@ library:
@item Sony Wave64 (W64) @tab X @tab X
@item SoX native format @tab X @tab X
@item SUN AU format @tab X @tab X
- at item SUP raw PGS subtitles @tab @tab X
+ at item SUP raw PGS subtitles @tab X @tab X
@item SVAG @tab @tab X
@tab Audio format used in Konami PS2 games.
@item TDSC @tab @tab X
diff --git a/libavformat/Makefile b/libavformat/Makefile
index ac03e0d471..df709c29dd 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -474,6 +474,7 @@ OBJS-$(CONFIG_STR_DEMUXER) += psxstr.o
OBJS-$(CONFIG_SUBVIEWER1_DEMUXER) += subviewer1dec.o subtitles.o
OBJS-$(CONFIG_SUBVIEWER_DEMUXER) += subviewerdec.o subtitles.o
OBJS-$(CONFIG_SUP_DEMUXER) += supdec.o
+OBJS-$(CONFIG_SUP_MUXER) += supenc.o
OBJS-$(CONFIG_SVAG_DEMUXER) += svag.o
OBJS-$(CONFIG_SWF_DEMUXER) += swfdec.o swf.o
OBJS-$(CONFIG_SWF_MUXER) += swfenc.o swf.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 416e5e1127..405ddb5ad9 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -303,7 +303,7 @@ static void register_all(void)
REGISTER_DEMUXER (STL, stl);
REGISTER_DEMUXER (SUBVIEWER1, subviewer1);
REGISTER_DEMUXER (SUBVIEWER, subviewer);
- REGISTER_DEMUXER (SUP, sup);
+ REGISTER_MUXDEMUX(SUP, sup);
REGISTER_DEMUXER (SVAG, svag);
REGISTER_MUXDEMUX(SWF, swf);
REGISTER_DEMUXER (TAK, tak);
diff --git a/libavformat/supenc.c b/libavformat/supenc.c
new file mode 100644
index 0000000000..f5f6b58c87
--- /dev/null
+++ b/libavformat/supenc.c
@@ -0,0 +1,96 @@
+/*
+ * SUP muxer
+ * Copyright (c) 2014 Petri Hintukainen <phintuka at users.sourceforge.net>
+ *
+ * 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 "internal.h"
+#include "libavutil/intreadwrite.h"
+
+#define SUP_PGS_MAGIC 0x5047 /* "PG", big endian */
+
+static int sup_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ uint8_t *data = pkt->data;
+ size_t size = pkt->size;
+ uint32_t pts = 0, dts = 0;
+
+ if (pkt->pts != AV_NOPTS_VALUE) {
+ pts = (uint32_t)pkt->pts;
+ }
+ if (pkt->dts != AV_NOPTS_VALUE) {
+ dts = (uint32_t)pkt->dts;
+ }
+
+ /*
+ Split frame to segments.
+ mkvmerge stores multiple segments in one frame.
+ */
+ while (size > 2) {
+ size_t len = AV_RB16(data + 1) + 3;
+
+ if (len > size) {
+ av_log(s, AV_LOG_ERROR, "Not enough data, skipping %d bytes\n",
+ (int)size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* header */
+ avio_wb16(s->pb, SUP_PGS_MAGIC);
+ avio_wb32(s->pb, pts);
+ avio_wb32(s->pb, dts);
+
+ avio_write(s->pb, data, len);
+
+ data += len;
+ size -= len;
+ }
+
+ if (size > 0) {
+ av_log(s, AV_LOG_ERROR, "Skipping %d bytes after last segment in frame\n",
+ (int)size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ return 0;
+}
+
+static int sup_write_header(AVFormatContext *s)
+{
+ if (s->nb_streams != 1) {
+ av_log(s, AV_LOG_ERROR, "%s files have exactly one stream\n",
+ s->oformat->name);
+ return AVERROR(EINVAL);
+ }
+
+ avpriv_set_pts_info(s->streams[0], 32, 1, 90000);
+
+ return 0;
+}
+
+AVOutputFormat ff_sup_muxer = {
+ .name = "sup",
+ .long_name = NULL_IF_CONFIG_SMALL("raw HDMV Presentation Graphic Stream subtitles"),
+ .extensions = "sup",
+ .mime_type = "application/x-pgs",
+ .subtitle_codec = AV_CODEC_ID_HDMV_PGS_SUBTITLE,
+ .write_header = sup_write_header,
+ .write_packet = sup_write_packet,
+ .flags = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
+};
diff --git a/libavformat/version.h b/libavformat/version.h
index 9cca76ee00..aeb5940410 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -32,7 +32,7 @@
// Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
// Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 57
-#define LIBAVFORMAT_VERSION_MINOR 81
+#define LIBAVFORMAT_VERSION_MINOR 82
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
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