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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+/*
+ * H.263i decoder
+ *
+ * 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 "codec_internal.h"
+#include "mpegvideo.h"
+#include "mpegvideodec.h"
+#include "h263data.h"
+#include "h263dec.h"
+
+/* don't understand why they choose a different header ! */
+int ff_intel_h263_decode_picture_header(MpegEncContext *s)
+{
+    int format;
+
+    if (get_bits_left(&s->gb) == 64) { /* special dummy frames */
+        return FRAME_SKIPPED;
+    }
+
+    /* picture header */
+    if (get_bits(&s->gb, 22) != 0x20) {
+        av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n");
+        return -1;
+    }
+    s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */
+
+    if (check_marker(s->avctx, &s->gb, "after picture_number") != 1) {
+        return -1;      /* marker */
+    }
+    if (get_bits1(&s->gb) != 0) {
+        av_log(s->avctx, AV_LOG_ERROR, "Bad H.263 id\n");
+        return -1;      /* H.263 id */
+    }
+    skip_bits1(&s->gb);         /* split screen off */
+    skip_bits1(&s->gb);         /* camera  off */
+    skip_bits1(&s->gb);         /* freeze picture release off */
+
+    format = get_bits(&s->gb, 3);
+    if (format == 0 || format == 6) {
+        av_log(s->avctx, AV_LOG_ERROR, "Intel H.263 free format not supported\n");
+        return -1;
+    }
+    s->h263_plus = 0;
+
+    s->pict_type = AV_PICTURE_TYPE_I + get_bits1(&s->gb);
+
+    s->h263_long_vectors = get_bits1(&s->gb);
+
+    if (get_bits1(&s->gb) != 0) {
+        av_log(s->avctx, AV_LOG_ERROR, "SAC not supported\n");
+        return -1;      /* SAC: off */
+    }
+    s->obmc= get_bits1(&s->gb);
+    s->pb_frame = get_bits1(&s->gb);
+
+    if (format < 6) {
+        s->width = ff_h263_format[format][0];
+        s->height = ff_h263_format[format][1];
+        s->avctx->sample_aspect_ratio.num = 12;
+        s->avctx->sample_aspect_ratio.den = 11;
+    } else {
+        format = get_bits(&s->gb, 3);
+        if(format == 0 || format == 7){
+            av_log(s->avctx, AV_LOG_ERROR, "Wrong Intel H.263 format\n");
+            return -1;
+        }
+        if(get_bits(&s->gb, 2))
+            av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
+        s->loop_filter = get_bits1(&s->gb) * !s->avctx->lowres;
+        if(get_bits1(&s->gb))
+            av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
+        if(get_bits1(&s->gb))
+            s->pb_frame = 2;
+        if(get_bits(&s->gb, 5))
+            av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
+        if(get_bits(&s->gb, 5) != 1)
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid marker\n");
+    }
+    if(format == 6){
+        int ar = get_bits(&s->gb, 4);
+        skip_bits(&s->gb, 9); // display width
+        check_marker(s->avctx, &s->gb, "in dimensions");
+        skip_bits(&s->gb, 9); // display height
+        if(ar == 15){
+            s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 8); // aspect ratio - width
+            s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 8); // aspect ratio - height
+        } else {
+            s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[ar];
+        }
+        if (s->avctx->sample_aspect_ratio.num == 0)
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid aspect ratio.\n");
+    }
+
+    s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
+    skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
+
+    if(s->pb_frame){
+        skip_bits(&s->gb, 3); //temporal reference for B-frame
+        skip_bits(&s->gb, 2); //dbquant
+    }
+
+    /* PEI */
+    if (skip_1stop_8data_bits(&s->gb) < 0)
+        return AVERROR_INVALIDDATA;
+    s->f_code = 1;
+
+    ff_h263_show_pict_info(s);
+
+    return 0;
+}
+
+const FFCodec ff_h263i_decoder = {
+    .p.name         = "h263i",
+    CODEC_LONG_NAME("Intel H.263"),
+    .p.type         = AVMEDIA_TYPE_VIDEO,
+    .p.id           = AV_CODEC_ID_H263I,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_h263_decode_init,
+    FF_CODEC_DECODE_CB(ff_h263_decode_frame),
+    .close          = ff_mpv_decode_close,
+    .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP |
+                      FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
+};