early-access version 1432

2021-02-09 04:25:58 +01:00
parent de64eab4b4
commit 3d5a9d908a
7336 changed files with 1773492 additions and 111 deletions
--- a/externals/ffmpeg/libavformat/acm.c
+++ b/externals/ffmpeg/libavformat/acm.c
@@ -0,0 +1,75 @@
+/*
+ * ACM 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 "libavutil/intreadwrite.h"
+#include "avformat.h"
+#include "rawdec.h"
+#include "internal.h"
+
+static int acm_probe(const AVProbeData *p)
+{
+    if (AV_RB32(p->buf) != 0x97280301)
+        return 0;
+
+    return AVPROBE_SCORE_MAX / 3 * 2;
+}
+
+static int acm_read_header(AVFormatContext *s)
+{
+    AVStream *st;
+    int ret;
+
+    st = avformat_new_stream(s, NULL);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+    st->codecpar->codec_id   = AV_CODEC_ID_INTERPLAY_ACM;
+
+    ret = ff_get_extradata(s, st->codecpar, s->pb, 14);
+    if (ret < 0)
+        return ret;
+
+    st->codecpar->channels    = AV_RL16(st->codecpar->extradata +  8);
+    st->codecpar->sample_rate = AV_RL16(st->codecpar->extradata + 10);
+    if (st->codecpar->channels <= 0 || st->codecpar->sample_rate <= 0)
+        return AVERROR_INVALIDDATA;
+    st->start_time         = 0;
+    st->duration           = AV_RL32(st->codecpar->extradata +  4) / st->codecpar->channels;
+    st->need_parsing       = AVSTREAM_PARSE_FULL_RAW;
+    avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
+
+    return 0;
+}
+
+FF_RAW_DEMUXER_CLASS(acm)
+AVInputFormat ff_acm_demuxer = {
+    .name           = "acm",
+    .long_name      = NULL_IF_CONFIG_SMALL("Interplay ACM"),
+    .read_probe     = acm_probe,
+    .read_header    = acm_read_header,
+    .read_packet    = ff_raw_read_partial_packet,
+    .flags          = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK | AVFMT_NOTIMESTAMPS,
+    .extensions     = "acm",
+    .raw_codec_id   = AV_CODEC_ID_INTERPLAY_ACM,
+    .priv_data_size = sizeof(FFRawDemuxerContext),
+    .priv_class     = &acm_demuxer_class,
+};