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/wvedec.c
+++ b/externals/ffmpeg/libavformat/wvedec.c
@@ -0,0 +1,62 @@
+/*
+ * 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 "avformat.h"
+#include "internal.h"
+#include "pcm.h"
+
+static int wve_probe(const AVProbeData *p)
+{
+    if (memcmp(p->buf, "ALawSoundFile**\0\017\020", 18) ||
+        memcmp(p->buf + 22, "\0\0\0\1\0\0\0\0\0\0", 10))
+        return 0;
+    return AVPROBE_SCORE_MAX;
+}
+
+static int wve_read_header(AVFormatContext *s)
+{
+    AVStream *st;
+
+    st = avformat_new_stream(s, NULL);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    avio_skip(s->pb, 18);
+    st->duration           = avio_rb32(s->pb);
+    st->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
+    st->codecpar->codec_id    = AV_CODEC_ID_PCM_ALAW;
+    st->codecpar->sample_rate = 8000;
+    st->codecpar->channels    = 1;
+    st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
+    st->codecpar->block_align = st->codecpar->bits_per_coded_sample * st->codecpar->channels / 8;
+    avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
+    avio_skip(s->pb, 10);
+
+    return 0;
+}
+
+AVInputFormat ff_wve_demuxer = {
+    .name           = "wve",
+    .long_name      = NULL_IF_CONFIG_SMALL("Psion 3 audio"),
+    .read_probe     = wve_probe,
+    .read_header    = wve_read_header,
+    .read_packet    = ff_pcm_read_packet,
+    .read_seek      = ff_pcm_read_seek,
+};