FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/tests/api/api-dump-stream-meta-test.c
Date: 2025-06-23 20:06:14
Exec Total Coverage
Lines: 71 105 67.6%
Functions: 2 2 100.0%
Branches: 27 48 56.2%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2025 Romain Beauxis
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 * THE SOFTWARE.
21 */
22
23 /**
24 * Dump stream metadata
25 */
26
27 #include "libavcodec/avcodec.h"
28 #include "libavformat/avformat.h"
29 #include "libavutil/timestamp.h"
30
31 3 static int dump_stream_meta(const char *input_filename) {
32 3 const AVCodec *codec = NULL;
33 3 AVPacket *pkt = NULL;
34 3 AVFrame *fr = NULL;
35 3 AVFormatContext *fmt_ctx = NULL;
36 3 AVCodecContext *ctx = NULL;
37 3 AVCodecParameters *origin_par = NULL;
38 AVStream *st;
39 3 int stream_idx = 0;
40 int result;
41 char *metadata;
42
43 3 result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
44
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 3 if (result < 0) {
45 ✗ av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
46 ✗ return result;
47 }
48
49 3 result = avformat_find_stream_info(fmt_ctx, NULL);
50
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 3 if (result < 0) {
51 ✗ av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
52 ✗ goto end;
53 }
54
55
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 3 if (fmt_ctx->nb_streams > 1) {
56 ✗ av_log(NULL, AV_LOG_ERROR, "More than one stream found in input!\n");
57 ✗ goto end;
58 }
59
60 3 origin_par = fmt_ctx->streams[stream_idx]->codecpar;
61 3 st = fmt_ctx->streams[stream_idx];
62
63 3 result = av_dict_get_string(st->metadata, &metadata, '=', ':');
64
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 3 if (result < 0)
65 ✗ goto end;
66
67 3 printf("Stream ID: %d, codec name: %s, metadata: %s\n", stream_idx,
68 avcodec_get_name(origin_par->codec_id),
69
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 3 strlen(metadata) ? metadata : "N/A");
70 3 av_free(metadata);
71
72 3 codec = avcodec_find_decoder(origin_par->codec_id);
73
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 3 if (!codec) {
74 ✗ av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
75 ✗ result = AVERROR_DECODER_NOT_FOUND;
76 ✗ goto end;
77 }
78
79 3 ctx = avcodec_alloc_context3(codec);
80
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 3 if (!ctx) {
81 ✗ av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
82 ✗ result = AVERROR(ENOMEM);
83 ✗ goto end;
84 }
85
86 3 result = avcodec_parameters_to_context(ctx, origin_par);
87
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 3 if (result) {
88 ✗ av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
89 ✗ goto end;
90 }
91
92 3 result = avcodec_open2(ctx, codec, NULL);
93
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 3 if (result < 0) {
94 ✗ av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
95 ✗ goto end;
96 }
97
98 3 pkt = av_packet_alloc();
99
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 3 if (!pkt) {
100 ✗ av_log(NULL, AV_LOG_ERROR, "Cannot allocate packet\n");
101 ✗ result = AVERROR(ENOMEM);
102 ✗ goto end;
103 }
104
105 3 fr = av_frame_alloc();
106
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 3 if (!fr) {
107 ✗ av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
108 ✗ result = AVERROR(ENOMEM);
109 ✗ goto end;
110 }
111
112 25 for (;;) {
113 28 result = av_read_frame(fmt_ctx, pkt);
114
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 28 if (result)
115 3 goto end;
116
117
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 25 if (pkt->stream_index != stream_idx) {
118 ✗ av_packet_unref(pkt);
119 ✗ continue;
120 }
121
122 75 printf("Stream ID: %d, packet PTS: %s, packet DTS: %s\n",
123 25 pkt->stream_index, av_ts2str(pkt->pts), av_ts2str(pkt->dts));
124
125
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 25 if (st->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) {
126 4 result = av_dict_get_string(st->metadata, &metadata, '=', ':');
127
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 4 if (result < 0)
128 ✗ goto end;
129
130 4 printf("Stream ID: %d, new metadata: %s\n", pkt->stream_index,
131
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 4 strlen(metadata) ? metadata : "N/A");
132 4 av_free(metadata);
133
134 4 st->event_flags &= ~AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
135 }
136
137 25 result = avcodec_send_packet(ctx, pkt);
138 25 av_packet_unref(pkt);
139
140
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 25 if (result < 0)
141 ✗ goto end;
142
143 21 do {
144 46 result = avcodec_receive_frame(ctx, fr);
145
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 46 if (result == AVERROR_EOF) {
146 ✗ result = 0;
147 ✗ goto end;
148 }
149
150
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 46 if (result == AVERROR(EAGAIN))
151 25 break;
152
153
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 21 if (result < 0)
154 ✗ goto end;
155
156 21 result = av_dict_get_string(fr->metadata, &metadata, '=', ':');
157
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 21 if (result < 0)
158 ✗ goto end;
159
160 21 printf("Stream ID: %d, frame PTS: %s, metadata: %s\n",
161 21 pkt->stream_index, av_ts2str(fr->pts),
162
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 21 strlen(metadata) ? metadata : "N/A");
163 21 av_free(metadata);
164 } while (1);
165 }
166
167 3 end:
168 3 av_packet_free(&pkt);
169 3 av_frame_free(&fr);
170 3 avformat_close_input(&fmt_ctx);
171 3 avcodec_free_context(&ctx);
172 3 return result;
173 }
174
175 3 int main(int argc, char **argv) {
176
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 3 if (argc < 2) {
177 ✗ av_log(NULL, AV_LOG_ERROR, "Incorrect input\n");
178 ✗ return 1;
179 }
180
181
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 3 if (dump_stream_meta(argv[1]) != AVERROR_EOF)
182 ✗ return 1;
183
184 3 return 0;
185 }
186