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
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+/*
+ * MPEG-4 Audio PCE copying function
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_MPEG4AUDIO_COPY_PCE_H
+#define AVCODEC_MPEG4AUDIO_COPY_PCE_H
+
+#include "libavutil/attributes.h"
+
+#include "get_bits.h"
+#include "put_bits.h"
+
+static av_always_inline unsigned int ff_pce_copy_bits(PutBitContext *pb,
+                                                      GetBitContext *gb,
+                                                      int bits)
+{
+    unsigned int el = get_bits(gb, bits);
+    put_bits(pb, bits, el);
+    return el;
+}
+
+static inline int ff_copy_pce_data(PutBitContext *pb, GetBitContext *gb)
+{
+    int five_bit_ch, four_bit_ch, comment_size, bits;
+    int offset = put_bits_count(pb);
+
+    ff_pce_copy_bits(pb, gb, 10);               // Tag, Object Type, Frequency
+    five_bit_ch  = ff_pce_copy_bits(pb, gb, 4); // Front
+    five_bit_ch += ff_pce_copy_bits(pb, gb, 4); // Side
+    five_bit_ch += ff_pce_copy_bits(pb, gb, 4); // Back
+    four_bit_ch  = ff_pce_copy_bits(pb, gb, 2); // LFE
+    four_bit_ch += ff_pce_copy_bits(pb, gb, 3); // Data
+    five_bit_ch += ff_pce_copy_bits(pb, gb, 4); // Coupling
+    if (ff_pce_copy_bits(pb, gb, 1))            // Mono Mixdown
+        ff_pce_copy_bits(pb, gb, 4);
+    if (ff_pce_copy_bits(pb, gb, 1))            // Stereo Mixdown
+        ff_pce_copy_bits(pb, gb, 4);
+    if (ff_pce_copy_bits(pb, gb, 1))            // Matrix Mixdown
+        ff_pce_copy_bits(pb, gb, 3);
+    for (bits = five_bit_ch*5+four_bit_ch*4; bits > 16; bits -= 16)
+        ff_pce_copy_bits(pb, gb, 16);
+    if (bits)
+        ff_pce_copy_bits(pb, gb, bits);
+    align_put_bits(pb);
+    align_get_bits(gb);
+    comment_size = ff_pce_copy_bits(pb, gb, 8);
+    for (; comment_size > 0; comment_size--)
+        ff_pce_copy_bits(pb, gb, 8);
+
+    return put_bits_count(pb) - offset;
+}
+
+#endif /* AVCODEC_MPEG4AUDIO_COPY_PCE_H */