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-rw-r--r--Changelog1
-rw-r--r--doc/ffmpeg-doc.texi2
-rw-r--r--libavcodec/adpcm.c6
-rw-r--r--libavformat/Makefile1
-rw-r--r--libavformat/allformats.c1
-rw-r--r--libavformat/allformats.h1
-rw-r--r--libavformat/apc.c93
7 files changed, 105 insertions, 0 deletions
diff --git a/Changelog b/Changelog
index 2b64544214..2f1b6feb3d 100644
--- a/Changelog
+++ b/Changelog
@@ -79,6 +79,7 @@ version <next>
- Blackfin optimizations
- Interplay C93 demuxer and video decoder
- Bethsoft VID demuxer and video decoder
+- CRYO APC demuxer
version 0.4.9-pre1:
diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi
index 971af969af..3db5685bc0 100644
--- a/doc/ffmpeg-doc.texi
+++ b/doc/ffmpeg-doc.texi
@@ -907,6 +907,8 @@ different game cutscenes repacked for use with ScummVM.
@tab Used in the game Cyberia from Interplay.
@item Bethsoft VID @tab @tab X
@tab Used in some games from Bethesda Softworks.
+@item CRYO APC @tab @tab X
+@tab Audio format used in some games by CRYO Interactive Entertainment.
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index d24acbc145..eafb0363db 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -612,6 +612,12 @@ static int adpcm_decode_init(AVCodecContext * avctx)
case CODEC_ID_ADPCM_CT:
c->status[0].step = c->status[1].step = 511;
break;
+ case CODEC_ID_ADPCM_IMA_WS:
+ if (avctx->extradata && avctx->extradata_size == 2 * 4) {
+ c->status[0].predictor = AV_RL32(avctx->extradata);
+ c->status[1].predictor = AV_RL32(avctx->extradata + 4);
+ }
+ break;
default:
break;
}
diff --git a/libavformat/Makefile b/libavformat/Makefile
index b58069b532..8ce7dbb6de 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -17,6 +17,7 @@ OBJS-$(CONFIG_AIFF_DEMUXER) += aiff.o riff.o
OBJS-$(CONFIG_AIFF_MUXER) += aiff.o riff.o
OBJS-$(CONFIG_AMR_DEMUXER) += amr.o
OBJS-$(CONFIG_AMR_MUXER) += amr.o
+OBJS-$(CONFIG_APC_DEMUXER) += apc.o
OBJS-$(CONFIG_ASF_DEMUXER) += asf.o riff.o
OBJS-$(CONFIG_ASF_MUXER) += asf-enc.o riff.o
OBJS-$(CONFIG_ASF_STREAM_MUXER) += asf-enc.o riff.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 9e1f76533e..4a1db118e1 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -49,6 +49,7 @@ void av_register_all(void)
REGISTER_MUXER (ADTS, adts);
REGISTER_MUXDEMUX(AIFF, aiff);
REGISTER_MUXDEMUX(AMR, amr);
+ REGISTER_DEMUXER (APC, apc);
REGISTER_MUXDEMUX(ASF, asf);
REGISTER_MUXER (ASF_STREAM, asf_stream);
REGISTER_MUXDEMUX(AU, au);
diff --git a/libavformat/allformats.h b/libavformat/allformats.h
index a3ba464376..543fd3358d 100644
--- a/libavformat/allformats.h
+++ b/libavformat/allformats.h
@@ -26,6 +26,7 @@ extern AVInputFormat aac_demuxer;
extern AVInputFormat ac3_demuxer;
extern AVInputFormat aiff_demuxer;
extern AVInputFormat amr_demuxer;
+extern AVInputFormat apc_demuxer;
extern AVInputFormat asf_demuxer;
extern AVInputFormat au_demuxer;
extern AVInputFormat audio_demuxer;
diff --git a/libavformat/apc.c b/libavformat/apc.c
new file mode 100644
index 0000000000..a937b1d8d7
--- /dev/null
+++ b/libavformat/apc.c
@@ -0,0 +1,93 @@
+/*
+ * CRYO APC audio format demuxer
+ * Copyright (c) 2007 Anssi Hannula <anssi.hannula@gmail.com>
+ *
+ * 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 "string.h"
+
+static int apc_probe(AVProbeData *p)
+{
+ if (p->buf_size < 8)
+ return 0;
+
+ if (!strncmp(p->buf, "CRYO_APC", 8))
+ return AVPROBE_SCORE_MAX;
+
+ return 0;
+}
+
+static int apc_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+ ByteIOContext *pb = &s->pb;
+ AVStream *st;
+
+ get_le32(pb); /* CRYO */
+ get_le32(pb); /* _APC */
+ get_le32(pb); /* 1.20 */
+
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR_NOMEM;
+
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = CODEC_ID_ADPCM_IMA_WS;
+
+ get_le32(pb); /* number of samples */
+ st->codec->sample_rate = get_le32(pb);
+
+ st->codec->extradata_size = 2 * 4;
+ st->codec->extradata = av_malloc(st->codec->extradata_size +
+ FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR_NOMEM;
+
+ /* initial predictor values for adpcm decoder */
+ get_buffer(pb, st->codec->extradata, 2 * 4);
+
+ st->codec->channels = 1;
+ if (get_le32(pb))
+ st->codec->channels = 2;
+
+ st->codec->bits_per_sample = 4;
+ st->codec->bit_rate = st->codec->bits_per_sample * st->codec->channels
+ * st->codec->sample_rate;
+ st->codec->block_align = 1;
+
+ return 0;
+}
+
+#define MAX_READ_SIZE 4096
+
+static int apc_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ if (av_get_packet(&s->pb, pkt, MAX_READ_SIZE) <= 0)
+ return AVERROR_IO;
+ pkt->stream_index = 0;
+ return 0;
+}
+
+AVInputFormat apc_demuxer = {
+ "apc",
+ "CRYO APC format",
+ 0,
+ apc_probe,
+ apc_read_header,
+ apc_read_packet,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 12:59:20 +0000