Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/binka.c | 100 +++++++++++++++++++++++++++++++++++++++
3 files changed, 102 insertions(+)
create mode 100644 libavformat/binka.c
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 85f432c8d9..b977fa0b1e 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -131,6 +131,7 @@ OBJS-$(CONFIG_AVS3_DEMUXER) += avs3dec.o
rawdec.o
OBJS-$(CONFIG_BETHSOFTVID_DEMUXER) += bethsoftvid.o
OBJS-$(CONFIG_BFI_DEMUXER) += bfi.o
OBJS-$(CONFIG_BINK_DEMUXER) += bink.o
+OBJS-$(CONFIG_BINKA_DEMUXER) += binka.o
OBJS-$(CONFIG_BINTEXT_DEMUXER) += bintext.o sauce.o
OBJS-$(CONFIG_BIT_DEMUXER) += bit.o
OBJS-$(CONFIG_BIT_MUXER) += bit.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 6990af55f4..9628c726a7 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -94,6 +94,7 @@ extern AVInputFormat ff_bethsoftvid_demuxer;
extern AVInputFormat ff_bfi_demuxer;
extern AVInputFormat ff_bintext_demuxer;
extern AVInputFormat ff_bink_demuxer;
+extern AVInputFormat ff_binka_demuxer;
extern AVInputFormat ff_bit_demuxer;
extern AVOutputFormat ff_bit_muxer;
extern AVInputFormat ff_bmv_demuxer;
diff --git a/libavformat/binka.c b/libavformat/binka.c
new file mode 100644
index 0000000000..13ca9ca4b5
--- /dev/null
+++ b/libavformat/binka.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2021 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/intreadwrite.h"
+#include "avformat.h"
+#include "internal.h"
+
+static int binka_probe(const AVProbeData *p)
+{
+ if (AV_RB32(p->buf) == MKBETAG('1', 'F', 'C', 'B') &&
+ (p->buf[4] == 1 || p->buf[4] == 2))
+ return AVPROBE_SCORE_MAX;
+ return 0;
+}
+
+static int binka_read_header(AVFormatContext *s)
+{
+ AVIOContext *pb = s->pb;
+ AVStream *st;
+ int entries, offset;
+
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+
+ avio_skip(pb, 5);
+
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_BINKAUDIO_DCT;
+ st->codecpar->channels = avio_r8(pb);
+ st->codecpar->sample_rate = avio_rl16(pb);
+ st->duration = avio_rl32(pb);
+
+ avio_skip(pb, 8);
+ entries = avio_rl16(pb);
+
+ offset = entries * 2 + 2;
+ avio_skip(pb, offset);
+
+ avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
+
+ return 0;
+}
+
+static int binka_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ AVIOContext *pb = s->pb;
+ AVStream *st = s->streams[0];
+ int64_t pos;
+ int pkt_size;
+ int ret;
+
+ if (avio_feof(pb))
+ return AVERROR_EOF;
+
+ pos = avio_tell(pb);
+ avio_skip(pb, 2);
+ pkt_size = avio_rl16(pb) + 4;
+ if (pkt_size <= 4)
+ return AVERROR(EIO);
+ ret = av_new_packet(pkt, pkt_size);
+ if (ret < 0)
+ return ret;
+
+ avio_read(pb, pkt->data + 4, pkt_size - 4);
+ AV_WL32(pkt->data, pkt_size);
+
+ pkt->pos = pos;
+ pkt->stream_index = 0;
+ pkt->duration = av_get_audio_frame_duration2(st->codecpar, 0);
+
+ return 0;
+}
+
+AVInputFormat ff_binka_demuxer = {
+ .name = "binka",
+ .long_name = NULL_IF_CONFIG_SMALL("Bink Audio"),
+ .read_probe = binka_probe,
+ .read_header = binka_read_header,
+ .read_packet = binka_read_packet,
+ .flags = AVFMT_GENERIC_INDEX,
+ .extensions = "binka",
+};
--
2.17.1
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