1 files changed, 83 insertions, 0 deletions
diff --git a/ffmpeg1/libavformat/rsodec.c b/ffmpeg1/libavformat/rsodec.c
new file mode 100644
index 0000000..6e3ea0a
--- /dev/null
+++ b/ffmpeg1/libavformat/rsodec.c
@@ -0,0 +1,83 @@
+/*
+ * RSO demuxer
+ * Copyright (c) 2001 Fabrice Bellard (original AU code)
+ * Copyright (c) 2010 Rafael Carre
+ *
+ * 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 "libavutil/channel_layout.h"
+#include "libavutil/intreadwrite.h"
+#include "avformat.h"
+#include "internal.h"
+#include "pcm.h"
+#include "rso.h"
+
+static int rso_read_header(AVFormatContext *s)
+{
+    AVIOContext *pb = s->pb;
+    int id, rate, bps;
+    unsigned int size;
+    enum AVCodecID codec;
+    AVStream *st;
+
+    id   = avio_rb16(pb);
+    size = avio_rb16(pb);
+    rate = avio_rb16(pb);
+    avio_rb16(pb);   /* play mode ? (0x0000 = don't loop) */
+
+    codec = ff_codec_get_id(ff_codec_rso_tags, id);
+
+    if (codec == AV_CODEC_ID_ADPCM_IMA_WAV) {
+        avpriv_report_missing_feature(s, "ADPCM in RSO");
+        return AVERROR_PATCHWELCOME;
+    }
+
+    bps = av_get_bits_per_sample(codec);
+    if (!bps) {
+        avpriv_request_sample(s, "Unknown bits per sample");
+        return AVERROR_PATCHWELCOME;
+    }
+
+    /* now we are ready: build format streams */
+    st = avformat_new_stream(s, NULL);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    st->duration            = (size * 8) / bps;
+    st->codec->codec_type   = AVMEDIA_TYPE_AUDIO;
+    st->codec->codec_tag    = id;
+    st->codec->codec_id     = codec;
+    st->codec->channels     = 1;
+    st->codec->channel_layout = AV_CH_LAYOUT_MONO;
+    st->codec->sample_rate  = rate;
+    st->codec->block_align  = 1;
+
+    avpriv_set_pts_info(st, 64, 1, rate);
+
+    return 0;
+}
+
+AVInputFormat ff_rso_demuxer = {
+    .name           =   "rso",
+    .long_name      =   NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
+    .extensions     =   "rso",
+    .read_header    =   rso_read_header,
+    .read_packet    =   ff_pcm_read_packet,
+    .read_seek      =   ff_pcm_read_seek,
+    .codec_tag      =   (const AVCodecTag* const []){ff_codec_rso_tags, 0},
+};