FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/v308dec.c
Date: 2022-12-09 07:38:14
Exec Total Coverage
Lines: 23 27 85.2%
Functions: 2 2 100.0%
Branches: 7 10 70.0%

Line Branch Exec Source
1 /*
2 * v308 decoder
3 * Copyright (c) 2011 Carl Eugen Hoyos
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 #include "avcodec.h"
23 #include "codec_internal.h"
24 #include "decode.h"
25
26 8 static av_cold int v308_decode_init(AVCodecContext *avctx)
27 {
28 8 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
29
30
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8 if (avctx->width & 1)
31 av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n");
32
33 8 return 0;
34 }
35
36 200 static int v308_decode_frame(AVCodecContext *avctx, AVFrame *pic,
37 int *got_frame, AVPacket *avpkt)
38 {
39 200 const uint8_t *src = avpkt->data;
40 uint8_t *y, *u, *v;
41 int i, j, ret;
42
43
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200 if (avpkt->size < 3 * avctx->height * avctx->width) {
44 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
45 return AVERROR(EINVAL);
46 }
47
48
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200 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
49 return ret;
50
51 200 pic->key_frame = 1;
52 200 pic->pict_type = AV_PICTURE_TYPE_I;
53
54 200 y = pic->data[0];
55 200 u = pic->data[1];
56 200 v = pic->data[2];
57
58
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45100 for (i = 0; i < avctx->height; i++) {
59
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15309100 for (j = 0; j < avctx->width; j++) {
60 15264200 v[j] = *src++;
61 15264200 y[j] = *src++;
62 15264200 u[j] = *src++;
63 }
64
65 44900 y += pic->linesize[0];
66 44900 u += pic->linesize[1];
67 44900 v += pic->linesize[2];
68 }
69
70 200 *got_frame = 1;
71
72 200 return avpkt->size;
73 }
74
75 const FFCodec ff_v308_decoder = {
76 .p.name = "v308",
77 CODEC_LONG_NAME("Uncompressed packed 4:4:4"),
78 .p.type = AVMEDIA_TYPE_VIDEO,
79 .p.id = AV_CODEC_ID_V308,
80 .init = v308_decode_init,
81 FF_CODEC_DECODE_CB(v308_decode_frame),
82 .p.capabilities = AV_CODEC_CAP_DR1,
83 };
84