FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/wrapped_avframe.c
Date: 2024-07-16 12:46:59
Exec Total Coverage
Lines: 29 39 74.4%
Functions: 3 3 100.0%
Branches: 7 14 50.0%

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 "codec_internal.h"
29 #include "decode.h"
30
31 #include "libavutil/frame.h"
32 #include "libavutil/buffer.h"
33 #include "libavutil/mem.h"
34
35 64 static void wrapped_avframe_release_buffer(void *unused, uint8_t *data)
36 {
37 64 AVFrame *frame = (AVFrame *)data;
38
39 64 av_frame_free(&frame);
40 64 }
41
42 64 static int wrapped_avframe_encode(AVCodecContext *avctx, AVPacket *pkt,
43 const AVFrame *frame, int *got_packet)
44 {
45 64 AVFrame *wrapped = av_frame_clone(frame);
46 uint8_t *data;
47 64 int size = sizeof(*wrapped) + AV_INPUT_BUFFER_PADDING_SIZE;
48
49
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64 if (!wrapped)
50 return AVERROR(ENOMEM);
51
52 64 data = av_mallocz(size);
53
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64 if (!data) {
54 av_frame_free(&wrapped);
55 return AVERROR(ENOMEM);
56 }
57
58 64 pkt->buf = av_buffer_create(data, size,
59 wrapped_avframe_release_buffer, NULL,
60 AV_BUFFER_FLAG_READONLY);
61
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64 if (!pkt->buf) {
62 av_frame_free(&wrapped);
63 av_freep(&data);
64 return AVERROR(ENOMEM);
65 }
66
67 64 av_frame_move_ref((AVFrame*)data, wrapped);
68 64 av_frame_free(&wrapped);
69
70 64 pkt->data = data;
71 64 pkt->size = sizeof(*wrapped);
72
73 64 pkt->flags |= AV_PKT_FLAG_KEY;
74 64 *got_packet = 1;
75 64 return 0;
76 }
77
78 718 static int wrapped_avframe_decode(AVCodecContext *avctx, AVFrame *out,
79 int *got_frame, AVPacket *pkt)
80 {
81 AVFrame *in;
82 int err;
83
84
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718 if (!(pkt->flags & AV_PKT_FLAG_TRUSTED)) {
85 // This decoder is not usable with untrusted input.
86 return AVERROR(EPERM);
87 }
88
89
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718 if (pkt->size < sizeof(AVFrame))
90 return AVERROR(EINVAL);
91
92 718 in = (AVFrame*)pkt->data;
93
94 718 err = av_frame_ref(out, in);
95
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718 if (err < 0)
96 return err;
97
98 718 err = ff_decode_frame_props(avctx, out);
99
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718 if (err < 0)
100 return err;
101
102 718 *got_frame = 1;
103 718 return 0;
104 }
105
106 const FFCodec ff_wrapped_avframe_encoder = {
107 .p.name = "wrapped_avframe",
108 CODEC_LONG_NAME("AVFrame to AVPacket passthrough"),
109 .p.type = AVMEDIA_TYPE_VIDEO,
110 .p.id = AV_CODEC_ID_WRAPPED_AVFRAME,
111 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
112 FF_CODEC_ENCODE_CB(wrapped_avframe_encode),
113 };
114
115 const FFCodec ff_wrapped_avframe_decoder = {
116 .p.name = "wrapped_avframe",
117 CODEC_LONG_NAME("AVPacket to AVFrame passthrough"),
118 .p.type = AVMEDIA_TYPE_VIDEO,
119 .p.id = AV_CODEC_ID_WRAPPED_AVFRAME,
120 FF_CODEC_DECODE_CB(wrapped_avframe_decode),
121 };
122