Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/fsb.c | 150 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 152 insertions(+)
create mode 100644 libavformat/fsb.c
diff --git a/libavformat/Makefile b/libavformat/Makefile
index f2326df..714dba0 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -170,6 +170,7 @@ OBJS-$(CONFIG_FOURXM_DEMUXER) += 4xm.o
OBJS-$(CONFIG_FRAMECRC_MUXER) += framecrcenc.o framehash.o
OBJS-$(CONFIG_FRAMEMD5_MUXER) += md5enc.o framehash.o
OBJS-$(CONFIG_FRM_DEMUXER) += frmdec.o
+OBJS-$(CONFIG_FSB_DEMUXER) += fsb.o
OBJS-$(CONFIG_GIF_MUXER) += gif.o
OBJS-$(CONFIG_GIF_DEMUXER) += gifdec.o
OBJS-$(CONFIG_GSM_DEMUXER) += gsmdec.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 92e321c..1b0fb54 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -138,6 +138,7 @@ void av_register_all(void)
REGISTER_MUXER (FRAMECRC, framecrc);
REGISTER_MUXER (FRAMEMD5, framemd5);
REGISTER_DEMUXER (FRM, frm);
+ REGISTER_DEMUXER (FSB, fsb);
REGISTER_MUXDEMUX(G722, g722);
REGISTER_MUXDEMUX(G723_1, g723_1);
REGISTER_DEMUXER (G729, g729);
diff --git a/libavformat/fsb.c b/libavformat/fsb.c
new file mode 100644
index 0000000..2881966
--- /dev/null
+++ b/libavformat/fsb.c
@@ -0,0 +1,150 @@
+/*
+ * FSB demuxer
+ * Copyright (c) 2015 Paul B Mahol
+ *
+ * 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 "libavcodec/bytestream.h"
+#include "libavutil/intreadwrite.h"
+#include "avformat.h"
+#include "avio.h"
+#include "internal.h"
+
+static int fsb_probe(AVProbeData *p)
+{
+ if (memcmp(p->buf, "FSB", 3) || p->buf[3] - '0' < 1 || p->buf[3] - '0' > 5)
+ return 0;
+ if (AV_RL32(p->buf + 4) != 1)
+ return 0;
+ return AVPROBE_SCORE_MAX;
+}
+
+static int fsb_read_header(AVFormatContext *s)
+{
+ AVIOContext *pb = s->pb;
+ unsigned format, version, c;
+ int64_t offset;
+ AVCodecContext *codec;
+ AVStream *st = avformat_new_stream(s, NULL);
+
+ avio_skip(pb, 3); // "FSB"
+ version = avio_r8(pb) - '0';
+ if (version != 4) {
+ avpriv_request_sample(s, "version %d", version);
+ return AVERROR_PATCHWELCOME;
+ }
+ avio_skip(pb, 4);
+ offset = avio_rl32(pb) + 0x30;
+ avio_skip(pb, 84);
+
+ if (!st)
+ return AVERROR(ENOMEM);
+ codec = st->codec;
+ codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ codec->codec_tag = 0;
+
+ format = avio_rb32(pb);
+ switch(format) {
+ case 0x40001001:
+ codec->codec_id = AV_CODEC_ID_XMA2;
+ break;
+ case 0x40000802:
+ codec->codec_id = AV_CODEC_ID_ADPCM_THP;
+ break;
+ default:
+ avpriv_request_sample(s, "format 0x%X", format);
+ return AVERROR_PATCHWELCOME;
+ }
+
+ codec->sample_rate = avio_rl32(pb);
+ if (!codec->sample_rate)
+ return AVERROR_INVALIDDATA;
+ avio_skip(pb, 6);
+
+ codec->channels = avio_rl16(pb);
+ if (!codec->channels)
+ return AVERROR_INVALIDDATA;
+
+ switch (codec->codec_id) {
+ case AV_CODEC_ID_XMA2:
+ ff_alloc_extradata(codec, 34);
+ if (!codec->extradata)
+ return AVERROR(ENOMEM);
+ memset(codec->extradata, 0, 34);
+ codec->block_align = 2048;
+ break;
+ case AV_CODEC_ID_ADPCM_THP:
+ if (codec->channels > INT_MAX / 32)
+ return AVERROR_INVALIDDATA;
+ ff_alloc_extradata(codec, 32 * codec->channels);
+ if (!codec->extradata)
+ return AVERROR(ENOMEM);
+ avio_seek(pb, 0x80, SEEK_SET);
+ for (c = 0; c < codec->channels; c++) {
+ avio_read(pb, codec->extradata + 32 * c, 32);
+ avio_skip(pb, 14);
+ }
+ codec->block_align = 8 * codec->channels;
+ break;
+ }
+
+ avio_skip(pb, offset - avio_tell(pb));
+
+ avpriv_set_pts_info(st, 64, 1, codec->sample_rate);
+
+ return 0;
+}
+
+static int fsb_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ AVCodecContext *codec = s->streams[0]->codec;
+ int ret;
+
+ if (avio_feof(s->pb))
+ return AVERROR_EOF;
+
+ if (codec->codec_id == AV_CODEC_ID_ADPCM_THP &&
+ codec->channels > 1) {
+ int i, ch;
+
+ ret = av_new_packet(pkt, codec->block_align);
+ if (ret < 0)
+ return ret;
+ for (i = 0; i < 4; i++) {
+ for (ch = 0; ch < codec->channels; ch++) {
+ pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
+ pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
+ }
+ }
+ ret = 0;
+ } else {
+ ret = av_get_packet(s->pb, pkt, codec->block_align);
+ }
+ pkt->stream_index = 0;
+
+ return ret;
+}
+
+AVInputFormat ff_fsb_demuxer = {
+ .name = "fsb",
+ .long_name = NULL_IF_CONFIG_SMALL("FMOD Sample Bank"),
+ .read_probe = fsb_probe,
+ .read_header = fsb_read_header,
+ .read_packet = fsb_read_packet,
+ .extensions = "fsb",
+};
--
1.9.1
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