FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/avuienc.c
Date: 2021-09-16 08:47:15
Exec Total Coverage
Lines: 34 41 82.9%
Branches: 13 24 54.2%

Line Branch Exec Source
1 /*
2 * AVID Meridien encoder
3 *
4 * Copyright (c) 2012 Carl Eugen Hoyos
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "avcodec.h"
24 #include "encode.h"
25 #include "internal.h"
26 #include "libavutil/intreadwrite.h"
27
28 3 static av_cold int avui_encode_init(AVCodecContext *avctx)
29 {
30
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3 if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) {
31 av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n");
32 return AVERROR(EINVAL);
33 }
34
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3 if (!(avctx->extradata = av_mallocz(144 + AV_INPUT_BUFFER_PADDING_SIZE)))
35 return AVERROR(ENOMEM);
36 3 avctx->extradata_size = 144;
37 3 memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16);
38
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3 if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
39 avctx->extradata[19] = 2;
40 } else {
41 3 avctx->extradata[19] = 1;
42 }
43 3 memcpy(avctx->extradata + 24, "\0\0\0\x78""ARESARES0001""\0\0\0\x98", 20);
44 3 AV_WB32(avctx->extradata + 44, avctx->width);
45 3 AV_WB32(avctx->extradata + 48, avctx->height);
46 3 memcpy(avctx->extradata + 52, "\0\0\0\x1\0\0\0\x20\0\0\0\x2", 12);
47
48
49 3 return 0;
50 }
51
52 150 static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
53 const AVFrame *pic, int *got_packet)
54 {
55 uint8_t *dst;
56 int i, j, skip, ret, size, interlaced;
57
58 150 interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE;
59
60
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150 if (avctx->height == 486) {
61 skip = 10;
62 } else {
63 150 skip = 16;
64 }
65 150 size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
66
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150 if ((ret = ff_get_encode_buffer(avctx, pkt, size, 0)) < 0)
67 return ret;
68 150 dst = pkt->data;
69
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150 if (!interlaced) {
70 150 memset(dst, 0, avctx->width * skip);
71 150 dst += avctx->width * skip;
72 }
73
74
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300 for (i = 0; i <= interlaced; i++) {
75 uint8_t *src;
76
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150 if (interlaced && avctx->height == 486) {
77 src = pic->data[0] + (1 - i) * pic->linesize[0];
78 } else {
79 150 src = pic->data[0] + i * pic->linesize[0];
80 }
81 150 memset(dst, 0, avctx->width * skip + 4 * i);
82 150 dst += avctx->width * skip + 4 * i;
83
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86550 for (j = 0; j < avctx->height; j += interlaced + 1) {
84 86400 memcpy(dst, src, avctx->width * 2);
85 86400 src += (interlaced + 1) * pic->linesize[0];
86 86400 dst += avctx->width * 2;
87 }
88 }
89
90 150 pkt->flags |= AV_PKT_FLAG_KEY;
91 150 *got_packet = 1;
92 150 return 0;
93 }
94
95 const AVCodec ff_avui_encoder = {
96 .name = "avui",
97 .long_name = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),
98 .type = AVMEDIA_TYPE_VIDEO,
99 .id = AV_CODEC_ID_AVUI,
100 .init = avui_encode_init,
101 .encode2 = avui_encode_frame,
102 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_EXPERIMENTAL,
103 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_UYVY422, AV_PIX_FMT_NONE },
104 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
105 };
106