ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavformat/ingenientdec.c

+/*
+ * RAW Ingenient MJPEG demuxer
+ * Copyright (c) 2005 Alex Beregszaszi
+ *
+ * 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 "rawdec.h"
+
+// http://www.artificis.hu/files/texts/ingenient.txt
+static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    int ret, size, w, h, unk1, unk2;
+
+    if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
+        return AVERROR(EIO); // FIXME
+
+    size = get_le32(s->pb);
+
+    w = get_le16(s->pb);
+    h = get_le16(s->pb);
+
+    url_fskip(s->pb, 8); // zero + size (padded?)
+    url_fskip(s->pb, 2);
+    unk1 = get_le16(s->pb);
+    unk2 = get_le16(s->pb);
+    url_fskip(s->pb, 22); // ASCII timestamp
+
+    av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
+        size, w, h, unk1, unk2);
+
+    if (av_new_packet(pkt, size) < 0)
+        return AVERROR(ENOMEM);
+
+    pkt->pos = url_ftell(s->pb);
+    pkt->stream_index = 0;
+    ret = get_buffer(s->pb, pkt->data, size);
+    if (ret < 0) {
+        av_free_packet(pkt);
+        return ret;
+    }
+    pkt->size = ret;
+    return ret;
+}
+
+AVInputFormat ingenient_demuxer = {
+    "ingenient",
+    NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),
+    0,
+    NULL,
+    ff_raw_video_read_header,
+    ingenient_read_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .extensions = "cgi", // FIXME
+    .value = CODEC_ID_MJPEG,
+};