Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/sdxdec.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 92 insertions(+)
create mode 100644 libavformat/sdxdec.c
diff --git a/libavformat/Makefile b/libavformat/Makefile
index f30bc94..036e7a9 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -437,6 +437,7 @@ OBJS-$(CONFIG_SBG_DEMUXER) += sbgdec.o
OBJS-$(CONFIG_SDP_DEMUXER) += rtsp.o
OBJS-$(CONFIG_SDR2_DEMUXER) += sdr2.o
OBJS-$(CONFIG_SDS_DEMUXER) += sdsdec.o
+OBJS-$(CONFIG_SDX_DEMUXER) += sdxdec.o
OBJS-$(CONFIG_SEGAFILM_DEMUXER) += segafilm.o
OBJS-$(CONFIG_SEGMENT_MUXER) += segment.o
OBJS-$(CONFIG_SHORTEN_DEMUXER) += shortendec.o rawdec.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index e30305b..b8590ce 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -276,6 +276,7 @@ void av_register_all(void)
REGISTER_DEMUXER (SDP, sdp);
REGISTER_DEMUXER (SDR2, sdr2);
REGISTER_DEMUXER (SDS, sds);
+ REGISTER_DEMUXER (SDX, sdx);
#if CONFIG_RTPDEC
ff_register_rtp_dynamic_payload_handlers();
ff_register_rdt_dynamic_payload_handlers();
diff --git a/libavformat/sdxdec.c b/libavformat/sdxdec.c
new file mode 100644
index 0000000..e8e7a4f
--- /dev/null
+++ b/libavformat/sdxdec.c
@@ -0,0 +1,90 @@
+/*
+ * SDX demuxer
+ * Copyright (c) 2017 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 "libavutil/avstring.h"
+#include "libavutil/intreadwrite.h"
+#include "avformat.h"
+#include "internal.h"
+#include "pcm.h"
+
+static int sdx_probe(AVProbeData *p)
+{
+ if (AV_RB32(p->buf) == AV_RB32("SDX:"))
+ return AVPROBE_SCORE_EXTENSION;
+ return 0;
+}
+
+static int sdx_read_header(AVFormatContext *s)
+{
+ AVStream *st;
+ int depth, length;
+
+ avio_skip(s->pb, 4);
+ while (!avio_feof(s->pb)) {
+ if (avio_r8(s->pb) == 0x1a)
+ break;
+ }
+ if (avio_r8(s->pb) != 1)
+ return AVERROR_INVALIDDATA;
+ length = avio_r8(s->pb);
+ avio_skip(s->pb, length);
+ avio_skip(s->pb, 4);
+ depth = avio_r8(s->pb);
+
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->channels = 1;
+ st->codecpar->sample_rate = avio_rl32(s->pb);
+ switch (depth) {
+ case 8:
+ st->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
+ break;
+ case 16:
+ st->codecpar->codec_id = AV_CODEC_ID_PCM_U16LE;
+ break;
+ case 24:
+ st->codecpar->codec_id = AV_CODEC_ID_PCM_U24LE;
+ break;
+ case 32:
+ st->codecpar->codec_id = AV_CODEC_ID_PCM_U32LE;
+ break;
+ default:
+ return AVERROR_INVALIDDATA;
+ }
+ avio_skip(s->pb, 16);
+ st->codecpar->block_align = depth / 8;
+
+ return 0;
+}
+
+AVInputFormat ff_sdx_demuxer = {
+ .name = "sdx",
+ .long_name = NULL_IF_CONFIG_SMALL("Sample Dump eXchange"),
+ .read_probe = sdx_probe,
+ .read_header = sdx_read_header,
+ .read_packet = ff_pcm_read_packet,
+ .read_seek = ff_pcm_read_seek,
+ .extensions = "sdx",
+ .flags = AVFMT_GENERIC_INDEX,
+};
--
2.9.3
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