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.

libavcodec/r210enc.c

@@ -0,0 +1,128 @@
+/*
+ * R210 encoder
+ *
+ * Copyright (c) 2012 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 "config_components.h"
+
+#include "avcodec.h"
+#include "codec_internal.h"
+#include "encode.h"
+#include "internal.h"
+#include "bytestream.h"
+
+static av_cold int encode_init(AVCodecContext *avctx)
+{
+    int aligned_width = FFALIGN(avctx->width,
+                                avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
+
+    avctx->bits_per_coded_sample = 32;
+    if (avctx->width > 0)
+        avctx->bit_rate = av_rescale(ff_guess_coded_bitrate(avctx), aligned_width, avctx->width);
+
+    return 0;
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                        const AVFrame *pic, int *got_packet)
+{
+    int i, j, ret;
+    int aligned_width = FFALIGN(avctx->width,
+                                avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
+    int pad = (aligned_width - avctx->width) * 4;
+    const uint8_t *srcr_line, *srcg_line, *srcb_line;
+    uint8_t *dst;
+
+    ret = ff_get_encode_buffer(avctx, pkt, 4 * aligned_width * avctx->height, 0);
+    if (ret < 0)
+        return ret;
+
+    srcg_line = pic->data[0];
+    srcb_line = pic->data[1];
+    srcr_line = pic->data[2];
+    dst = pkt->data;
+
+    for (i = 0; i < avctx->height; i++) {
+        const uint16_t *srcr = (const uint16_t *)srcr_line;
+        const uint16_t *srcg = (const uint16_t *)srcg_line;
+        const uint16_t *srcb = (const uint16_t *)srcb_line;
+        for (j = 0; j < avctx->width; j++) {
+            uint32_t pixel;
+            unsigned r = *srcr++;
+            unsigned g = *srcg++;
+            unsigned b = *srcb++;
+            if (avctx->codec_id == AV_CODEC_ID_R210)
+                pixel = (r << 20) | (g << 10) | b;
+            else
+                pixel = (r << 22) | (g << 12) | (b << 2);
+            if (avctx->codec_id == AV_CODEC_ID_AVRP)
+                bytestream_put_le32(&dst, pixel);
+            else
+                bytestream_put_be32(&dst, pixel);
+        }
+        memset(dst, 0, pad);
+        dst += pad;
+        srcr_line += pic->linesize[2];
+        srcg_line += pic->linesize[0];
+        srcb_line += pic->linesize[1];
+    }
+
+    *got_packet = 1;
+    return 0;
+}
+
+static const enum AVPixelFormat pix_fmt[] = { AV_PIX_FMT_GBRP10, AV_PIX_FMT_NONE };
+
+#if CONFIG_R210_ENCODER
+const FFCodec ff_r210_encoder = {
+    .p.name         = "r210",
+    CODEC_LONG_NAME("Uncompressed RGB 10-bit"),
+    .p.type         = AVMEDIA_TYPE_VIDEO,
+    .p.id           = AV_CODEC_ID_R210,
+    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
+    .init           = encode_init,
+    FF_CODEC_ENCODE_CB(encode_frame),
+    .p.pix_fmts     = pix_fmt,
+};
+#endif
+#if CONFIG_R10K_ENCODER
+const FFCodec ff_r10k_encoder = {
+    .p.name         = "r10k",
+    CODEC_LONG_NAME("AJA Kona 10-bit RGB Codec"),
+    .p.type         = AVMEDIA_TYPE_VIDEO,
+    .p.id           = AV_CODEC_ID_R10K,
+    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
+    .init           = encode_init,
+    FF_CODEC_ENCODE_CB(encode_frame),
+    .p.pix_fmts     = pix_fmt,
+};
+#endif
+#if CONFIG_AVRP_ENCODER
+const FFCodec ff_avrp_encoder = {
+    .p.name         = "avrp",
+    CODEC_LONG_NAME("Avid 1:1 10-bit RGB Packer"),
+    .p.type         = AVMEDIA_TYPE_VIDEO,
+    .p.id           = AV_CODEC_ID_AVRP,
+    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
+    .init           = encode_init,
+    FF_CODEC_ENCODE_CB(encode_frame),
+    .p.pix_fmts     = pix_fmt,
+};
+#endif