FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/dump_extradata_bsf.c
Date: 2021-09-26 18:22:30
Exec Total Coverage
Lines: 0 28 0.0%
Branches: 0 20 0.0%

Line Branch Exec Source
1 /*
2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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
21 #include <string.h>
22
23 #include "bsf.h"
24 #include "bsf_internal.h"
25
26 #include "libavutil/log.h"
27 #include "libavutil/opt.h"
28
29 enum DumpFreq {
30 DUMP_FREQ_KEYFRAME,
31 DUMP_FREQ_ALL,
32 };
33
34 typedef struct DumpExtradataContext {
35 const AVClass *class;
36 AVPacket pkt;
37 int freq;
38 } DumpExtradataContext;
39
40 static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
41 {
42 DumpExtradataContext *s = ctx->priv_data;
43 AVPacket *in = &s->pkt;
44 int ret = 0;
45
46 ret = ff_bsf_get_packet_ref(ctx, in);
47 if (ret < 0)
48 return ret;
49
50 if (ctx->par_in->extradata &&
51 (s->freq == DUMP_FREQ_ALL ||
52 (s->freq == DUMP_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY)) &&
53 (in->size < ctx->par_in->extradata_size ||
54 memcmp(in->data, ctx->par_in->extradata, ctx->par_in->extradata_size))) {
55 if (in->size >= INT_MAX - ctx->par_in->extradata_size) {
56 ret = AVERROR(ERANGE);
57 goto fail;
58 }
59
60 ret = av_new_packet(out, in->size + ctx->par_in->extradata_size);
61 if (ret < 0)
62 goto fail;
63
64 ret = av_packet_copy_props(out, in);
65 if (ret < 0) {
66 av_packet_unref(out);
67 goto fail;
68 }
69
70 memcpy(out->data, ctx->par_in->extradata, ctx->par_in->extradata_size);
71 memcpy(out->data + ctx->par_in->extradata_size, in->data, in->size);
72 } else {
73 av_packet_move_ref(out, in);
74 }
75
76 fail:
77 av_packet_unref(in);
78
79 return ret;
80 }
81
82 #define OFFSET(x) offsetof(DumpExtradataContext, x)
83 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
84 static const AVOption options[] = {
85 { "freq", "When to dump extradata", OFFSET(freq), AV_OPT_TYPE_INT,
86 { .i64 = DUMP_FREQ_KEYFRAME }, DUMP_FREQ_KEYFRAME, DUMP_FREQ_ALL, FLAGS, "freq" },
87 { "k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" },
88 { "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" },
89 { "e", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL }, .flags = FLAGS, .unit = "freq" },
90 { "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL }, .flags = FLAGS, .unit = "freq" },
91 { NULL },
92 };
93
94 static const AVClass dump_extradata_class = {
95 .class_name = "dump_extradata bsf",
96 .item_name = av_default_item_name,
97 .option = options,
98 .version = LIBAVUTIL_VERSION_INT,
99 };
100
101 const AVBitStreamFilter ff_dump_extradata_bsf = {
102 .name = "dump_extra",
103 .priv_data_size = sizeof(DumpExtradataContext),
104 .priv_class = &dump_extradata_class,
105 .filter = dump_extradata,
106 };
107