FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/wrapped_avframe.c
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 19 42 45.2%
Branches: 3 14 21.4%

Line Branch Exec Source
1 /*
2 * AVFrame wrapper
3 * Copyright (c) 2015 Luca Barbato
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Simple wrapper to store an AVFrame and forward it as AVPacket.
25 */
26
27 #include "avcodec.h"
28 #include "decode.h"
29 #include "internal.h"
30
31 #include "libavutil/internal.h"
32 #include "libavutil/frame.h"
33 #include "libavutil/buffer.h"
34 #include "libavutil/pixdesc.h"
35
36 35 static void wrapped_avframe_release_buffer(void *unused, uint8_t *data)
37 {
38 35 AVFrame *frame = (AVFrame *)data;
39
40 35 av_frame_free(&frame);
41 35 }
42
43 35 static int wrapped_avframe_encode(AVCodecContext *avctx, AVPacket *pkt,
44 const AVFrame *frame, int *got_packet)
45 {
46 35 AVFrame *wrapped = av_frame_clone(frame);
47 uint8_t *data;
48 35 int size = sizeof(*wrapped) + AV_INPUT_BUFFER_PADDING_SIZE;
49
50
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35 if (!wrapped)
51 return AVERROR(ENOMEM);
52
53 35 data = av_mallocz(size);
54
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35 if (!data) {
55 av_frame_free(&wrapped);
56 return AVERROR(ENOMEM);
57 }
58
59 35 pkt->buf = av_buffer_create(data, size,
60 wrapped_avframe_release_buffer, NULL,
61 AV_BUFFER_FLAG_READONLY);
62
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35 if (!pkt->buf) {
63 av_frame_free(&wrapped);
64 av_freep(&data);
65 return AVERROR(ENOMEM);
66 }
67
68 35 av_frame_move_ref((AVFrame*)data, wrapped);
69 35 av_frame_free(&wrapped);
70
71 35 pkt->data = data;
72 35 pkt->size = sizeof(*wrapped);
73
74 35 pkt->flags |= AV_PKT_FLAG_KEY;
75 35 *got_packet = 1;
76 35 return 0;
77 }
78
79 static int wrapped_avframe_decode(AVCodecContext *avctx, void *data,
80 int *got_frame, AVPacket *pkt)
81 {
82 AVFrame *in, *out;
83 int err;
84
85 if (!(pkt->flags & AV_PKT_FLAG_TRUSTED)) {
86 // This decoder is not usable with untrusted input.
87 return AVERROR(EPERM);
88 }
89
90 if (pkt->size < sizeof(AVFrame))
91 return AVERROR(EINVAL);
92
93 in = (AVFrame*)pkt->data;
94 out = data;
95
96 err = ff_decode_frame_props(avctx, out);
97 if (err < 0)
98 return err;
99
100 av_frame_move_ref(out, in);
101
102 err = ff_attach_decode_data(out);
103 if (err < 0) {
104 av_frame_unref(out);
105 return err;
106 }
107
108 *got_frame = 1;
109 return 0;
110 }
111
112 const AVCodec ff_wrapped_avframe_encoder = {
113 .name = "wrapped_avframe",
114 .long_name = NULL_IF_CONFIG_SMALL("AVFrame to AVPacket passthrough"),
115 .type = AVMEDIA_TYPE_VIDEO,
116 .id = AV_CODEC_ID_WRAPPED_AVFRAME,
117 .encode2 = wrapped_avframe_encode,
118 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
119 };
120
121 const AVCodec ff_wrapped_avframe_decoder = {
122 .name = "wrapped_avframe",
123 .long_name = NULL_IF_CONFIG_SMALL("AVPacket to AVFrame passthrough"),
124 .type = AVMEDIA_TYPE_VIDEO,
125 .id = AV_CODEC_ID_WRAPPED_AVFRAME,
126 .decode = wrapped_avframe_decode,
127 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
128 };
129