Add AQTitle subtitles demuxer.

Changelog

@@ -51,7 +51,7 @@ version <next>:
 - pp (postproc) filter ported from MPlayer
 - NIST Sphere demuxer
 - av_basename and av_dirname
-- MPL2, VPlayer and MPlayer subtitles demuxers and decoders
+- MPL2, VPlayer, MPlayer and AQTitle subtitles demuxers and decoders
 
 
 version 1.0:

doc/general.texi

@@ -920,6 +920,7 @@ performance on systems without hardware floating point support).
 @multitable @columnfractions .4 .1 .1 .1 .1
 @item Name @tab Muxing @tab Demuxing @tab Encoding @tab Decoding
 @item 3GPP Timed Text  @tab   @tab   @tab X @tab X
+@item AQTitle          @tab   @tab X @tab   @tab X
 @item DVB              @tab X @tab X @tab X @tab X
 @item DVD              @tab X @tab X @tab X @tab X
 @item JACOsub          @tab X @tab X @tab   @tab X

libavformat/Makefile

@@ -66,6 +66,7 @@ OBJS-$(CONFIG_AMR_MUXER)                 += amr.o
 OBJS-$(CONFIG_ANM_DEMUXER)               += anm.o
 OBJS-$(CONFIG_APC_DEMUXER)               += apc.o
 OBJS-$(CONFIG_APE_DEMUXER)               += ape.o apetag.o img2.o
+OBJS-$(CONFIG_AQTITLE_DEMUXER)           += aqtitledec.o
 OBJS-$(CONFIG_ASF_DEMUXER)               += asfdec.o asf.o asfcrypt.o \
                                             avlanguage.o
 OBJS-$(CONFIG_ASF_MUXER)                 += asfenc.o asf.o

libavformat/allformats.c

@@ -75,6 +75,7 @@ void av_register_all(void)
     REGISTER_DEMUXER (ANM,              anm);
     REGISTER_DEMUXER (APC,              apc);
     REGISTER_DEMUXER (APE,              ape);
+    REGISTER_DEMUXER (AQTITLE,          aqtitle);
     REGISTER_MUXDEMUX(ASF,              asf);
     REGISTER_MUXDEMUX(ASS,              ass);
     REGISTER_MUXDEMUX(AST,              ast);

libavformat/aqtitledec.c

@@ -0,0 +1,148 @@
+/*
+ * 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
+ * AQTitle subtitles format demuxer
+ *
+ * @see http://web.archive.org/web/20070210095721/http://www.volny.cz/aberka/czech/aqt.html
+ * @see https://trac.annodex.net/wiki/AQTitle
+ */
+
+#include "avformat.h"
+#include "internal.h"
+#include "subtitles.h"
+#include "libavutil/opt.h"
+
+typedef struct {
+    const AVClass *class;
+    FFDemuxSubtitlesQueue q;
+    AVRational frame_rate;
+} AQTitleContext;
+
+static int aqt_probe(AVProbeData *p)
+{
+    int frame;
+    const char *ptr = p->buf;
+
+    if (sscanf(ptr, "-->> %d", &frame) == 1)
+        return AVPROBE_SCORE_MAX / 2;
+    return 0;
+}
+
+static int aqt_read_header(AVFormatContext *s)
+{
+    AQTitleContext *aqt = s->priv_data;
+    AVStream *st = avformat_new_stream(s, NULL);
+    int new_event = 1;
+    int64_t pos = 0, frame = AV_NOPTS_VALUE;
+    AVPacket *sub = NULL;
+
+    if (!st)
+        return AVERROR(ENOMEM);
+    avpriv_set_pts_info(st, 64, aqt->frame_rate.den, aqt->frame_rate.num);
+    st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+    st->codec->codec_id   = AV_CODEC_ID_TEXT;
+
+    while (!url_feof(s->pb)) {
+        char line[4096];
+        int len = ff_get_line(s->pb, line, sizeof(line));
+
+        if (!len)
+            break;
+
+        line[strcspn(line, "\r\n")] = 0;
+
+        if (sscanf(line, "-->> %"PRId64, &frame) == 1) {
+            new_event = 1;
+            pos = avio_tell(s->pb);
+            if (sub) {
+                sub->duration = frame - sub->pts;
+                sub = NULL;
+            }
+        } else if (*line) {
+            if (!new_event) {
+                sub = ff_subtitles_queue_insert(&aqt->q, "\n", 1, 1);
+                if (!sub)
+                    return AVERROR(ENOMEM);
+            }
+            sub = ff_subtitles_queue_insert(&aqt->q, line, strlen(line), !new_event);
+            if (!sub)
+                return AVERROR(ENOMEM);
+            if (new_event) {
+                sub->pts = frame;
+                sub->duration = -1;
+                sub->pos = pos;
+            }
+            new_event = 0;
+        }
+    }
+
+    ff_subtitles_queue_finalize(&aqt->q);
+    return 0;
+}
+
+static int aqt_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    AQTitleContext *aqt = s->priv_data;
+    return ff_subtitles_queue_read_packet(&aqt->q, pkt);
+}
+
+static int aqt_read_seek(AVFormatContext *s, int stream_index,
+                         int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
+{
+    AQTitleContext *aqt = s->priv_data;
+    return ff_subtitles_queue_seek(&aqt->q, s, stream_index,
+                                   min_ts, ts, max_ts, flags);
+}
+
+static int aqt_read_close(AVFormatContext *s)
+{
+    AQTitleContext *aqt = s->priv_data;
+    ff_subtitles_queue_clean(&aqt->q);
+    return 0;
+}
+
+#define OFFSET(x) offsetof(AQTitleContext, x)
+#define SD AV_OPT_FLAG_SUBTITLE_PARAM|AV_OPT_FLAG_DECODING_PARAM
+static const AVOption aqt_options[] = {
+    { "subfps", "set the movie frame rate", OFFSET(frame_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, SD },
+    { NULL }
+};
+
+static const AVClass aqt_class = {
+    .class_name = "aqtdec",
+    .item_name  = av_default_item_name,
+    .option     = aqt_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVInputFormat ff_aqtitle_demuxer = {
+    .name           = "aqtitle",
+    .long_name      = NULL_IF_CONFIG_SMALL("AQTitle subtitles"),
+    .priv_data_size = sizeof(AQTitleContext),
+    .read_probe     = aqt_probe,
+    .read_header    = aqt_read_header,
+    .read_packet    = aqt_read_packet,
+    .read_seek2     = aqt_read_seek,
+    .read_close     = aqt_read_close,
+    .extensions     = "aqt",
+    .priv_class     = &aqt_class,
+};

libavformat/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 54
-#define LIBAVFORMAT_VERSION_MINOR 53
+#define LIBAVFORMAT_VERSION_MINOR 54
 #define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \

tests/fate/subtitles.mak

@@ -1,3 +1,6 @@
+FATE_SUBTITLES_ASS-$(call DEMDEC, AQTITLE, TEXT) += fate-sub-aqtitle
+fate-sub-aqtitle: CMD = md5 -i $(SAMPLES)/sub/AQTitle_capability_tester.aqt -f ass
+
 FATE_SUBTITLES_ASS-$(call DEMDEC, JACOSUB, JACOSUB) += fate-sub-jacosub
 fate-sub-jacosub: CMD = md5 -i $(SAMPLES)/sub/JACOsub_capability_tester.jss -f ass
 

tests/ref/fate/sub-aqtitle

@@ -0,0 +1 @@
+e888e1354cd0968895ab89cb169fec31