FFmpeg 7.1 + cuframes input demuxer

Snapshot FFmpeg n7.1 (release tag) с применённым patch'ем для cuframes input format. Используется как FFMPEG_REPO_OVERRIDE в NickM-27/FFmpeg-Builds fork для статической сборки patched binary под Frigate (Debian 12 / glibc 2.36). Apply changes: + libavformat/cuframesdec.c (новый — реализация демуксера) M libavformat/Makefile (CONFIG_CUFRAMES_DEMUXER target) M libavformat/allformats.c (extern declaration) M configure (--enable-libcuframes option + dep check) Patch source: https://git.goldix.org/gx/cuframes (filter/ffmpeg-7.1-cuframes-demuxer.patch) History сброшена (snapshot вместо fork) потому что upstream shallow clone не позволял push в gitea. Полная история FFmpeg — на github.com/FFmpeg/FFmpeg n7.1.
2026-05-17 11:43:10 +01:00
commit dcecd42de4
8554 changed files with 2122707 additions and 0 deletions
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+/*
+ * RAW Ingenient MJPEG demuxer
+ * Copyright (c) 2005 Alex Beregszaszi
+ *
+ * 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 "demux.h"
+#include "rawdec.h"
+#include "libavutil/intreadwrite.h"
+
+// http://multimedia.cx/ingenient.txt
+static int ingenient_probe(const AVProbeData *p)
+{
+    if (   AV_RN32(p->buf) != AV_RN32("MJPG")
+        || p->buf_size < 50
+        || AV_RB16(p->buf + 48) != 0xffd8)
+        return 0;
+    return AVPROBE_SCORE_MAX * 3 / 4;
+}
+
+static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    int ret, size, w, h, unk1, unk2;
+
+    if (avio_rl32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
+        return AVERROR(EIO); // FIXME
+
+    size = avio_rl32(s->pb);
+
+    w = avio_rl16(s->pb);
+    h = avio_rl16(s->pb);
+
+    avio_skip(s->pb, 8); // zero + size (padded?)
+    avio_skip(s->pb, 2);
+    unk1 = avio_rl16(s->pb);
+    unk2 = avio_rl16(s->pb);
+    avio_skip(s->pb, 22); // ASCII timestamp
+
+    av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
+        size, w, h, unk1, unk2);
+
+    ret = av_get_packet(s->pb, pkt, size);
+    if (ret < 0)
+        return ret;
+    pkt->stream_index = 0;
+    return ret;
+}
+
+const FFInputFormat ff_ingenient_demuxer = {
+    .p.name         = "ingenient",
+    .p.long_name    = NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),
+    .p.flags        = AVFMT_GENERIC_INDEX,
+    .p.extensions   = "cgi", // FIXME
+    .p.priv_class   = &ff_rawvideo_demuxer_class,
+    .priv_data_size = sizeof(FFRawVideoDemuxerContext),
+    .read_probe     = ingenient_probe,
+    .read_header    = ff_raw_video_read_header,
+    .read_packet    = ingenient_read_packet,
+    .raw_codec_id   = AV_CODEC_ID_MJPEG,
+};