ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-02-05 22:08:02 +00:00
parent a08f61ddb9
commit a4b787f4b8
5429 changed files with 1356786 additions and 0 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavformat/srtenc.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavformat/srtenc.c
@@ -0,0 +1,112 @@
+/*
+ * SubRip subtitle muxer
+ * Copyright (c) 2012  Nicolas George <nicolas.george@normalesup.org>
+ *
+ * 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/log.h"
+#include "libavutil/intreadwrite.h"
+
+/* TODO: add options for:
+   - character encoding;
+   - LF / CRLF;
+   - byte order mark.
+ */
+
+typedef struct SRTContext{
+    unsigned index;
+} SRTContext;
+
+static int srt_write_header(AVFormatContext *avf)
+{
+    SRTContext *srt = avf->priv_data;
+
+    if (avf->nb_streams != 1 ||
+        avf->streams[0]->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) {
+        av_log(avf, AV_LOG_ERROR,
+               "SRT supports only a single subtitles stream.\n");
+        return AVERROR(EINVAL);
+    }
+    if (avf->streams[0]->codec->codec_id != AV_CODEC_ID_TEXT &&
+        avf->streams[0]->codec->codec_id != AV_CODEC_ID_SUBRIP) {
+        av_log(avf, AV_LOG_ERROR,
+               "Unsupported subtitles codec: %s\n",
+               avcodec_get_name(avf->streams[0]->codec->codec_id));
+        return AVERROR(EINVAL);
+    }
+    avpriv_set_pts_info(avf->streams[0], 64, 1, 1000);
+    srt->index = 1;
+    return 0;
+}
+
+static int srt_write_packet(AVFormatContext *avf, AVPacket *pkt)
+{
+    SRTContext *srt = avf->priv_data;
+
+    // TODO: reindent
+        int64_t s = pkt->pts, e, d = pkt->duration;
+        int size, x1 = -1, y1 = -1, x2 = -1, y2 = -1;
+        const uint8_t *p;
+
+        p = av_packet_get_side_data(pkt, AV_PKT_DATA_SUBTITLE_POSITION, &size);
+        if (p && size == 16) {
+            x1 = AV_RL32(p     );
+            y1 = AV_RL32(p +  4);
+            x2 = AV_RL32(p +  8);
+            y2 = AV_RL32(p + 12);
+        }
+
+        if (d <= 0)
+            /* For backward compatibility, fallback to convergence_duration. */
+            d = pkt->convergence_duration;
+        if (s == AV_NOPTS_VALUE || d < 0) {
+            av_log(avf, AV_LOG_WARNING,
+                   "Insufficient timestamps in event number %d.\n", srt->index);
+            return 0;
+        }
+        e = s + d;
+        avio_printf(avf->pb, "%d\n%02d:%02d:%02d,%03d --> %02d:%02d:%02d,%03d",
+                       srt->index,
+                       (int)(s / 3600000),      (int)(s / 60000) % 60,
+                       (int)(s /    1000) % 60, (int)(s %  1000),
+                       (int)(e / 3600000),      (int)(e / 60000) % 60,
+                       (int)(e /    1000) % 60, (int)(e %  1000));
+        if (p)
+            avio_printf(avf->pb, "  X1:%03d X2:%03d Y1:%03d Y2:%03d",
+                        x1, x2, y1, y2);
+        avio_printf(avf->pb, "\n");
+
+    avio_write(avf->pb, pkt->data, pkt->size);
+    avio_write(avf->pb, "\n\n", 2);
+    srt->index++;
+    return 0;
+}
+
+AVOutputFormat ff_srt_muxer = {
+    .name           = "srt",
+    .long_name      = NULL_IF_CONFIG_SMALL("SubRip subtitle"),
+    .mime_type      = "application/x-subrip",
+    .extensions     = "srt",
+    .priv_data_size = sizeof(SRTContext),
+    .write_header   = srt_write_header,
+    .write_packet   = srt_write_packet,
+    .flags          = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
+    .subtitle_codec = AV_CODEC_ID_SUBRIP,
+};