Add PJS subtitles demuxer and decoder.

Changelog

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

doc/general.texi

@@ -928,6 +928,7 @@ performance on systems without hardware floating point support).
 @item MPL2             @tab   @tab X @tab   @tab X
 @item MPsub (MPlayer)  @tab   @tab X @tab   @tab X
 @item PGS              @tab   @tab   @tab   @tab X
+@item PJS (Phoenix)    @tab   @tab X @tab   @tab X
 @item RealText         @tab   @tab X @tab   @tab X
 @item SAMI             @tab   @tab X @tab   @tab X
 @item SSA/ASS          @tab X @tab X @tab X @tab X

libavcodec/Makefile

@@ -333,6 +333,7 @@ OBJS-$(CONFIG_PGMYUV_DECODER)          += pnmdec.o pnm.o
 OBJS-$(CONFIG_PGMYUV_ENCODER)          += pnmenc.o pnm.o
 OBJS-$(CONFIG_PGSSUB_DECODER)          += pgssubdec.o
 OBJS-$(CONFIG_PICTOR_DECODER)          += pictordec.o cga_data.o
+OBJS-$(CONFIG_PJS_DECODER)             += textdec.o ass.o
 OBJS-$(CONFIG_PNG_DECODER)             += png.o pngdec.o pngdsp.o
 OBJS-$(CONFIG_PNG_ENCODER)             += png.o pngenc.o
 OBJS-$(CONFIG_PPM_DECODER)             += pnmdec.o pnm.o

libavcodec/allcodecs.c

@@ -450,6 +450,7 @@ void avcodec_register_all(void)
     REGISTER_ENCDEC (MOVTEXT,           movtext);
     REGISTER_DECODER(MPL2,              mpl2);
     REGISTER_DECODER(PGSSUB,            pgssub);
+    REGISTER_DECODER(PJS,               pjs);
     REGISTER_DECODER(REALTEXT,          realtext);
     REGISTER_DECODER(SAMI,              sami);
     REGISTER_ENCDEC (SRT,               srt);

libavcodec/avcodec.h

@@ -468,6 +468,7 @@ enum AVCodecID {
     AV_CODEC_ID_WEBVTT     = MKBETAG('W','V','T','T'),
     AV_CODEC_ID_MPL2       = MKBETAG('M','P','L','2'),
     AV_CODEC_ID_VPLAYER    = MKBETAG('V','P','l','r'),
+    AV_CODEC_ID_PJS        = MKBETAG('P','h','J','S'),
 
     /* other specific kind of codecs (generally used for attachments) */
     AV_CODEC_ID_FIRST_UNKNOWN = 0x18000,           ///< A dummy ID pointing at the start of various fake codecs.

libavcodec/codec_desc.c

@@ -2422,6 +2422,12 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .name      = "jacosub",
         .long_name = NULL_IF_CONFIG_SMALL("JACOsub subtitle"),
     },
+    {
+        .id        = AV_CODEC_ID_PJS,
+        .type      = AVMEDIA_TYPE_SUBTITLE,
+        .name      = "pjs",
+        .long_name = NULL_IF_CONFIG_SMALL("PJS (Phoenix Japanimation Society) subtitle"),
+    },
     {
         .id        = AV_CODEC_ID_SAMI,
         .type      = AVMEDIA_TYPE_SUBTITLE,

libavcodec/textdec.c

@@ -128,17 +128,19 @@ AVCodec ff_text_decoder = {
 };
 #endif
 
-#if CONFIG_VPLAYER_DECODER
-#define vplayer_options options
-DECLARE_CLASS(vplayer);
+#if CONFIG_VPLAYER_DECODER || CONFIG_PJS_DECODER
 
-static int vplayer_init(AVCodecContext *avctx)
+static int linebreak_init(AVCodecContext *avctx)
 {
     TextContext *text = avctx->priv_data;
     text->linebreaks = "|";
     return ff_ass_subtitle_header_default(avctx);
 }
 
+#if CONFIG_VPLAYER_DECODER
+#define vplayer_options options
+DECLARE_CLASS(vplayer);
+
 AVCodec ff_vplayer_decoder = {
     .name           = "vplayer",
     .priv_data_size = sizeof(TextContext),
@@ -146,7 +148,25 @@ AVCodec ff_vplayer_decoder = {
     .type           = AVMEDIA_TYPE_SUBTITLE,
     .id             = AV_CODEC_ID_VPLAYER,
     .decode         = text_decode_frame,
-    .init           = vplayer_init,
+    .init           = linebreak_init,
     .priv_class     = &vplayer_decoder_class,
 };
 #endif
+
+#if CONFIG_PJS_DECODER
+#define pjs_options options
+DECLARE_CLASS(pjs);
+
+AVCodec ff_pjs_decoder = {
+    .name           = "pjs",
+    .priv_data_size = sizeof(TextContext),
+    .long_name      = NULL_IF_CONFIG_SMALL("PJS subtitle"),
+    .type           = AVMEDIA_TYPE_SUBTITLE,
+    .id             = AV_CODEC_ID_PJS,
+    .decode         = text_decode_frame,
+    .init           = linebreak_init,
+    .priv_class     = &pjs_decoder_class,
+};
+#endif
+
+#endif /* text subtitles with '|' line break */

libavformat/Makefile

@@ -292,6 +292,7 @@ OBJS-$(CONFIG_PCM_U32LE_DEMUXER)         += pcmdec.o pcm.o
 OBJS-$(CONFIG_PCM_U32LE_MUXER)           += pcmenc.o rawenc.o
 OBJS-$(CONFIG_PCM_U8_DEMUXER)            += pcmdec.o pcm.o
 OBJS-$(CONFIG_PCM_U8_MUXER)              += pcmenc.o rawenc.o
+OBJS-$(CONFIG_PJS_DEMUXER)               += pjsdec.o
 OBJS-$(CONFIG_PMP_DEMUXER)               += pmpdec.o
 OBJS-$(CONFIG_PVA_DEMUXER)               += pva.o
 OBJS-$(CONFIG_PVF_DEMUXER)               += pvfdec.o pcm.o

libavformat/allformats.c

@@ -221,6 +221,7 @@ void av_register_all(void)
     REGISTER_MUXDEMUX(PCM_U16BE,        pcm_u16be);
     REGISTER_MUXDEMUX(PCM_U16LE,        pcm_u16le);
     REGISTER_MUXDEMUX(PCM_U8,           pcm_u8);
+    REGISTER_DEMUXER (PJS,              pjs);
     REGISTER_DEMUXER (PMP,              pmp);
     REGISTER_MUXER   (PSP,              psp);
     REGISTER_DEMUXER (PVA,              pva);

libavformat/pjsdec.c

@@ -0,0 +1,137 @@
+/*
+ * 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
+ * PJS (Phoenix Japanimation Society) subtitles format demuxer
+ *
+ * @see http://subs.com.ru/page.php?al=pjs
+ */
+
+#include "avformat.h"
+#include "internal.h"
+#include "subtitles.h"
+
+typedef struct {
+    FFDemuxSubtitlesQueue q;
+} PJSContext;
+
+static int pjs_probe(AVProbeData *p)
+{
+    char c;
+    int64_t start, end;
+    const unsigned char *ptr = p->buf;
+
+    if (sscanf(ptr, "%"PRId64",%"PRId64",%c", &start, &end, &c) == 3) {
+        size_t q1pos = strcspn(ptr, "\"");
+        size_t q2pos = q1pos + strcspn(ptr + q1pos + 1, "\"") + 1;
+        if (strcspn(ptr, "\r\n") > q2pos)
+            return AVPROBE_SCORE_MAX;
+    }
+    return 0;
+}
+
+static int64_t read_ts(char **line, int *duration)
+{
+    int64_t start, end;
+
+    if (sscanf(*line, "%"PRId64",%"PRId64, &start, &end) == 2) {
+        *line += strcspn(*line, "\"") + 1;
+        *duration = end - start;
+        return start;
+    }
+    return AV_NOPTS_VALUE;
+}
+
+static int pjs_read_header(AVFormatContext *s)
+{
+    PJSContext *pjs = s->priv_data;
+    AVStream *st = avformat_new_stream(s, NULL);
+    int res = 0;
+
+    if (!st)
+        return AVERROR(ENOMEM);
+    avpriv_set_pts_info(st, 64, 1, 10);
+    st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+    st->codec->codec_id   = AV_CODEC_ID_PJS;
+
+    while (!url_feof(s->pb)) {
+        char line[4096];
+        char *p = line;
+        const int64_t pos = avio_tell(s->pb);
+        int len = ff_get_line(s->pb, line, sizeof(line));
+        int64_t pts_start;
+        int duration;
+
+        if (!len)
+            break;
+
+        line[strcspn(line, "\r\n")] = 0;
+
+        pts_start = read_ts(&p, &duration);
+        if (pts_start != AV_NOPTS_VALUE) {
+            AVPacket *sub;
+
+            p[strcspn(p, "\"")] = 0;
+            sub = ff_subtitles_queue_insert(&pjs->q, p, strlen(p), 0);
+            if (!sub)
+                return AVERROR(ENOMEM);
+            sub->pos = pos;
+            sub->pts = pts_start;
+            sub->duration = duration;
+        }
+    }
+
+    ff_subtitles_queue_finalize(&pjs->q);
+    return res;
+}
+
+static int pjs_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    PJSContext *pjs = s->priv_data;
+    return ff_subtitles_queue_read_packet(&pjs->q, pkt);
+}
+
+static int pjs_read_seek(AVFormatContext *s, int stream_index,
+                         int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
+{
+    PJSContext *pjs = s->priv_data;
+    return ff_subtitles_queue_seek(&pjs->q, s, stream_index,
+                                   min_ts, ts, max_ts, flags);
+}
+
+static int pjs_read_close(AVFormatContext *s)
+{
+    PJSContext *pjs = s->priv_data;
+    ff_subtitles_queue_clean(&pjs->q);
+    return 0;
+}
+
+AVInputFormat ff_pjs_demuxer = {
+    .name           = "pjs",
+    .long_name      = NULL_IF_CONFIG_SMALL("PJS (Phoenix Japanimation Society) subtitles"),
+    .priv_data_size = sizeof(PJSContext),
+    .read_probe     = pjs_probe,
+    .read_header    = pjs_read_header,
+    .read_packet    = pjs_read_packet,
+    .read_seek2     = pjs_read_seek,
+    .read_close     = pjs_read_close,
+    .extensions     = "pjs",
+};

libavformat/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 54
-#define LIBAVFORMAT_VERSION_MINOR 54
+#define LIBAVFORMAT_VERSION_MINOR 55
 #define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \

tests/fate/subtitles.mak

@@ -22,6 +22,9 @@ fate-sub-mpl2: CMD = md5 -i $(SAMPLES)/sub/MPL2_capability_tester.txt -f ass
 FATE_SUBTITLES_ASS-$(call DEMDEC, MPSUB, TEXT) += fate-sub-mpsub-frames
 fate-sub-mpsub-frames: CMD = md5 -i $(SAMPLES)/sub/MPSub_capability_tester_frames.sub -f ass
 
+FATE_SUBTITLES_ASS-$(call DEMDEC, PJS, PJS) += fate-sub-pjs
+fate-sub-pjs: CMD = md5 -i $(SAMPLES)/sub/PJS_capability_tester.pjs -f ass
+
 FATE_SUBTITLES_ASS-$(call DEMDEC, REALTEXT, REALTEXT) += fate-sub-realtext
 fate-sub-realtext: CMD = md5 -i $(SAMPLES)/sub/RealText_capability_tester.rt -f ass
 

tests/ref/fate/sub-pjs

@@ -0,0 +1 @@
+d044f6ffdee48e48efff072b33baee0a