FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/avuienc.c
Date: 2024-04-20 14:10:07
Exec Total Coverage
Lines: 33 40 82.5%
Functions: 2 2 100.0%
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 "codec_internal.h"
25 #include "encode.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/mem.h"
28
29 3 static av_cold int avui_encode_init(AVCodecContext *avctx)
30 {
31
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3 if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) {
32 av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n");
33 return AVERROR(EINVAL);
34 }
35
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3 if (!(avctx->extradata = av_mallocz(144 + AV_INPUT_BUFFER_PADDING_SIZE)))
36 return AVERROR(ENOMEM);
37 3 avctx->extradata_size = 144;
38 3 memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16);
39
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3 if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
40 avctx->extradata[19] = 2;
41 } else {
42 3 avctx->extradata[19] = 1;
43 }
44 3 memcpy(avctx->extradata + 24, "\0\0\0\x78""ARESARES0001""\0\0\0\x98", 20);
45 3 AV_WB32(avctx->extradata + 44, avctx->width);
46 3 AV_WB32(avctx->extradata + 48, avctx->height);
47 3 memcpy(avctx->extradata + 52, "\0\0\0\x1\0\0\0\x20\0\0\0\x2", 12);
48
49
50 3 return 0;
51 }
52
53 150 static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
54 const AVFrame *pic, int *got_packet)
55 {
56 uint8_t *dst;
57 int i, j, skip, ret, size, interlaced;
58
59 150 interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE;
60
61
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150 if (avctx->height == 486) {
62 skip = 10;
63 } else {
64 150 skip = 16;
65 }
66 150 size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
67
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150 if ((ret = ff_get_encode_buffer(avctx, pkt, size, 0)) < 0)
68 return ret;
69 150 dst = pkt->data;
70
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150 if (!interlaced) {
71 150 memset(dst, 0, avctx->width * skip);
72 150 dst += avctx->width * skip;
73 }
74
75
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300 for (i = 0; i <= interlaced; i++) {
76 const uint8_t *src;
77
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150 if (interlaced && avctx->height == 486) {
78 src = pic->data[0] + (1 - i) * pic->linesize[0];
79 } else {
80 150 src = pic->data[0] + i * pic->linesize[0];
81 }
82 150 memset(dst, 0, avctx->width * skip + 4 * i);
83 150 dst += avctx->width * skip + 4 * i;
84
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86550 for (j = 0; j < avctx->height; j += interlaced + 1) {
85 86400 memcpy(dst, src, avctx->width * 2);
86 86400 src += (interlaced + 1) * pic->linesize[0];
87 86400 dst += avctx->width * 2;
88 }
89 }
90
91 150 *got_packet = 1;
92 150 return 0;
93 }
94
95 const FFCodec ff_avui_encoder = {
96 .p.name = "avui",
97 CODEC_LONG_NAME("Avid Meridien Uncompressed"),
98 .p.type = AVMEDIA_TYPE_VIDEO,
99 .p.id = AV_CODEC_ID_AVUI,
100 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_EXPERIMENTAL |
101 AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
102 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_UYVY422, AV_PIX_FMT_NONE },
103 .init = avui_encode_init,
104 FF_CODEC_ENCODE_CB(avui_encode_frame),
105 };
106