FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/ivfenc.c
Date: 2026-04-30 23:37:26
Exec Total Coverage
Lines: 43 51 84.3%
Functions: 4 4 100.0%
Branches: 7 20 35.0%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2010 Reimar Döffinger
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20 #include "avformat.h"
21 #include "internal.h"
22 #include "mux.h"
23 #include "libavutil/intreadwrite.h"
24
25 typedef struct IVFEncContext {
26 unsigned frame_cnt;
27 uint64_t last_pts, last_pkt_duration;
28 } IVFEncContext;
29
30 14 static int ivf_init(AVFormatContext *s)
31 {
32 14 AVCodecParameters *par = s->streams[0]->codecpar;
33
34
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 14 if (!(par->codec_id == AV_CODEC_ID_AV1 ||
35
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 14 par->codec_id == AV_CODEC_ID_VP8 ||
36
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 14 par->codec_id == AV_CODEC_ID_VP9)) {
37 ✗ av_log(s, AV_LOG_ERROR, "Currently only VP8, VP9 and AV1 are supported!\n");
38 ✗ return AVERROR(EINVAL);
39 }
40
41
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 14 if (par->codec_id == AV_CODEC_ID_VP9) {
42 14 int ret = ff_stream_add_bitstream_filter(s->streams[0], "vp9_superframe", NULL);
43
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 14 if (ret < 0)
44 ✗ return ret;
45 ✗ } else if (par->codec_id == AV_CODEC_ID_AV1) {
46 ✗ int ret = ff_stream_add_bitstream_filter(s->streams[0], "av1_metadata", "td=insert");
47 ✗ if (ret < 0)
48 ✗ return ret;
49 }
50
51 14 return 0;
52 }
53
54 14 static int ivf_write_header(AVFormatContext *s)
55 {
56 14 AVCodecParameters *par = s->streams[0]->codecpar;
57 14 AVIOContext *pb = s->pb;
58
59 14 avio_write(pb, "DKIF", 4);
60 14 avio_wl16(pb, 0); // version
61 14 avio_wl16(pb, 32); // header length
62 14 avio_wl32(pb,
63
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 14 par->codec_id == AV_CODEC_ID_VP9 ? AV_RL32("VP90") :
64 ✗ par->codec_id == AV_CODEC_ID_VP8 ? AV_RL32("VP80") : AV_RL32("AV01"));
65 14 avio_wl16(pb, par->width);
66 14 avio_wl16(pb, par->height);
67 14 avio_wl32(pb, s->streams[0]->time_base.den);
68 14 avio_wl32(pb, s->streams[0]->time_base.num);
69 14 avio_wl32(pb, 0xFFFFFFFF); // "number of frames" is overwritten at the end of muxing
70 14 avio_wl32(pb, 0); // unused
71
72 14 return 0;
73 }
74
75 183 static int ivf_write_packet(AVFormatContext *s, AVPacket *pkt)
76 {
77 183 AVIOContext *pb = s->pb;
78 183 IVFEncContext *ctx = s->priv_data;
79
80 183 avio_wl32(pb, pkt->size);
81 183 avio_wl64(pb, pkt->pts);
82 183 avio_write(pb, pkt->data, pkt->size);
83 183 ctx->last_pkt_duration = pkt->duration;
84 183 ctx->frame_cnt++;
85 183 ctx->last_pts = pkt->pts;
86
87 183 return 0;
88 }
89
90 14 static int ivf_write_trailer(AVFormatContext *s)
91 {
92 14 AVIOContext *pb = s->pb;
93 14 IVFEncContext *ctx = s->priv_data;
94
95 // overwrite the "number of frames"
96
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 14 if ((pb->seekable & AVIO_SEEKABLE_NORMAL)) {
97 14 int64_t end = avio_tell(pb);
98
99 14 avio_seek(pb, 24, SEEK_SET);
100 14 avio_wl32(pb, ctx->frame_cnt);
101 14 avio_seek(pb, end, SEEK_SET);
102 }
103
104 14 return 0;
105 }
106
107 static const AVCodecTag codec_ivf_tags[] = {
108 { AV_CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },
109 { AV_CODEC_ID_VP9, MKTAG('V', 'P', '9', '0') },
110 { AV_CODEC_ID_AV1, MKTAG('A', 'V', '0', '1') },
111 { AV_CODEC_ID_NONE, 0 }
112 };
113
114 const FFOutputFormat ff_ivf_muxer = {
115 .p.name = "ivf",
116 .p.long_name = NULL_IF_CONFIG_SMALL("On2 IVF"),
117 .p.extensions = "ivf",
118 .p.audio_codec = AV_CODEC_ID_NONE,
119 .p.video_codec = AV_CODEC_ID_VP8,
120 .p.subtitle_codec = AV_CODEC_ID_NONE,
121 .p.codec_tag = (const AVCodecTag* const []){ codec_ivf_tags, 0 },
122 .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
123 .priv_data_size = sizeof(IVFEncContext),
124 .init = ivf_init,
125 .write_header = ivf_write_header,
126 .write_packet = ivf_write_packet,
127 .write_trailer = ivf_write_trailer,
128 };
129