FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/xbmenc.c
Date: 2022-12-06 04:36:11
Exec Total Coverage
Lines: 27 30 90.0%
Functions: 1 1 100.0%
Branches: 10 12 83.3%

Line Branch Exec Source
1 /*
2 * XBM image format
3 *
4 * Copyright (c) 2012 Paul B Mahol
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 "libavutil/reverse.h"
24 #include "avcodec.h"
25 #include "codec_internal.h"
26 #include "encode.h"
27 #include "mathops.h"
28
29 #define ANSI_MIN_READLINE 509
30
31 38 static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
32 const AVFrame *p, int *got_packet)
33 {
34 int i, j, l, commas, ret, size, linesize, lineout, rowsout;
35 const uint8_t *ptr;
36 uint8_t *buf;
37
38 38 linesize = lineout = (avctx->width + 7) / 8;
39 38 commas = avctx->height * linesize;
40
41 /* ANSI worst case minimum readline is 509 chars. */
42 38 rowsout = avctx->height;
43
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38 if (lineout > (ANSI_MIN_READLINE / 6)) {
44 lineout = ANSI_MIN_READLINE / 6;
45 rowsout = (commas + lineout - 1) / lineout;
46 }
47
48 38 size = rowsout * (lineout * 6 + 1) + 106;
49
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38 if ((ret = ff_alloc_packet(avctx, pkt, size)) < 0)
50 return ret;
51
52 38 buf = pkt->data;
53 38 ptr = p->data[0];
54
55 38 buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width);
56 38 buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height);
57 38 buf += snprintf(buf, 39, "static unsigned char image_bits[] = {\n");
58
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10982 for (i = 0, l = lineout; i < avctx->height; i++) {
59
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492442 for (j = 0; j < linesize; j++) {
60 481536 buf += snprintf(buf, 6, " 0x%02X", ff_reverse[*ptr++]);
61
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481536 if (--commas <= 0) {
62 38 buf += snprintf(buf, 2, "\n");
63 38 break;
64 }
65 481498 buf += snprintf(buf, 2, ",");
66
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481498 if (--l <= 0) {
67 10906 buf += snprintf(buf, 2, "\n");
68 10906 l = lineout;
69 }
70 }
71 10944 ptr += p->linesize[0] - linesize;
72 }
73 38 buf += snprintf(buf, 5, " };\n");
74
75 38 pkt->size = buf - pkt->data;
76 38 *got_packet = 1;
77 38 return 0;
78 }
79
80 const FFCodec ff_xbm_encoder = {
81 .p.name = "xbm",
82 CODEC_LONG_NAME("XBM (X BitMap) image"),
83 .p.type = AVMEDIA_TYPE_VIDEO,
84 .p.id = AV_CODEC_ID_XBM,
85 .p.capabilities = AV_CODEC_CAP_DR1,
86 FF_CODEC_ENCODE_CB(xbm_encode_frame),
87 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE,
88 AV_PIX_FMT_NONE },
89 };
90