FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/xwdenc.c
Date: 2026-04-26 13:12:44
Exec Total Coverage
Lines: 116 131 88.5%
Functions: 1 1 100.0%
Branches: 24 36 66.7%
Line Branch Exec Source
1 /*
2 * XWD 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/imgutils_internal.h"
24 #include "libavutil/pixdesc.h"
25 #include "avcodec.h"
26 #include "bytestream.h"
27 #include "codec_internal.h"
28 #include "encode.h"
29 #include "xwd.h"
30
31 #define WINDOW_NAME "lavcxwdenc"
32 #define WINDOW_NAME_SIZE 11
33
34 129 static int xwd_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
35 const AVFrame *p, int *got_packet)
36 {
37 129 enum AVPixelFormat pix_fmt = avctx->pix_fmt;
38 129 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
39 129 uint32_t pixdepth, bpp, bpad, ncolors = 0, lsize, vclass, be = 0;
40 129 uint32_t rgb[3] = { 0 }, bitorder = 0;
41 uint32_t header_size;
42 int i, out_size, ret;
43 const uint8_t *ptr;
44 uint8_t *buf;
45 uint32_t pal[256];
46
47 129 pixdepth = av_get_bits_per_pixel(desc);
48
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 129 if (desc->flags & AV_PIX_FMT_FLAG_BE)
49 26 be = 1;
50
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 129 switch (pix_fmt) {
51 13 case AV_PIX_FMT_ARGB:
52 case AV_PIX_FMT_BGRA:
53 case AV_PIX_FMT_RGBA:
54 case AV_PIX_FMT_ABGR:
55
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 13 if (pix_fmt == AV_PIX_FMT_ARGB ||
56 pix_fmt == AV_PIX_FMT_ABGR)
57 ✗ be = 1;
58
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 13 if (pix_fmt == AV_PIX_FMT_ABGR ||
59 pix_fmt == AV_PIX_FMT_RGBA) {
60 13 rgb[0] = 0xFF;
61 13 rgb[1] = 0xFF00;
62 13 rgb[2] = 0xFF0000;
63 } else {
64 ✗ rgb[0] = 0xFF0000;
65 ✗ rgb[1] = 0xFF00;
66 ✗ rgb[2] = 0xFF;
67 }
68 13 bpp = 32;
69 13 pixdepth = 24;
70 13 vclass = XWD_TRUE_COLOR;
71 13 bpad = 32;
72 13 break;
73 38 case AV_PIX_FMT_BGR24:
74 case AV_PIX_FMT_RGB24:
75
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 38 if (pix_fmt == AV_PIX_FMT_RGB24)
76 38 be = 1;
77 38 bpp = 24;
78 38 vclass = XWD_TRUE_COLOR;
79 38 bpad = 32;
80 38 rgb[0] = 0xFF0000;
81 38 rgb[1] = 0xFF00;
82 38 rgb[2] = 0xFF;
83 38 break;
84 13 case AV_PIX_FMT_RGB565LE:
85 case AV_PIX_FMT_RGB565BE:
86 case AV_PIX_FMT_BGR565LE:
87 case AV_PIX_FMT_BGR565BE:
88
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 13 if (pix_fmt == AV_PIX_FMT_BGR565LE ||
89 pix_fmt == AV_PIX_FMT_BGR565BE) {
90 ✗ rgb[0] = 0x1F;
91 ✗ rgb[1] = 0x7E0;
92 ✗ rgb[2] = 0xF800;
93 } else {
94 13 rgb[0] = 0xF800;
95 13 rgb[1] = 0x7E0;
96 13 rgb[2] = 0x1F;
97 }
98 13 bpp = 16;
99 13 vclass = XWD_TRUE_COLOR;
100 13 bpad = 16;
101 13 break;
102 13 case AV_PIX_FMT_RGB555LE:
103 case AV_PIX_FMT_RGB555BE:
104 case AV_PIX_FMT_BGR555LE:
105 case AV_PIX_FMT_BGR555BE:
106
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 13 if (pix_fmt == AV_PIX_FMT_BGR555LE ||
107 pix_fmt == AV_PIX_FMT_BGR555BE) {
108 ✗ rgb[0] = 0x1F;
109 ✗ rgb[1] = 0x3E0;
110 ✗ rgb[2] = 0x7C00;
111 } else {
112 13 rgb[0] = 0x7C00;
113 13 rgb[1] = 0x3E0;
114 13 rgb[2] = 0x1F;
115 }
116 13 bpp = 16;
117 13 vclass = XWD_TRUE_COLOR;
118 13 bpad = 16;
119 13 break;
120 26 case AV_PIX_FMT_RGB8:
121 case AV_PIX_FMT_BGR8:
122 case AV_PIX_FMT_RGB4_BYTE:
123 case AV_PIX_FMT_BGR4_BYTE:
124 case AV_PIX_FMT_PAL8:
125 26 bpp = 8;
126 26 vclass = XWD_PSEUDO_COLOR;
127 26 bpad = 8;
128 26 ncolors = 256;
129 26 break;
130 13 case AV_PIX_FMT_GRAY8:
131 13 bpp = 8;
132 13 bpad = 8;
133 13 vclass = XWD_STATIC_GRAY;
134 13 break;
135 13 case AV_PIX_FMT_MONOWHITE:
136 13 be = 1;
137 13 bitorder = 1;
138 13 bpp = 1;
139 13 bpad = 8;
140 13 vclass = XWD_STATIC_GRAY;
141 13 break;
142 ✗ default:
143 ✗ av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
144 ✗ return AVERROR(EINVAL);
145 }
146
147 129 lsize = FFALIGN(bpp * avctx->width, bpad) / 8;
148 129 header_size = XWD_HEADER_SIZE + WINDOW_NAME_SIZE;
149 129 out_size = header_size + ncolors * XWD_CMAP_SIZE + avctx->height * lsize;
150
151
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 129 if ((ret = ff_get_encode_buffer(avctx, pkt, out_size, 0)) < 0)
152 ✗ return ret;
153 129 buf = pkt->data;
154
155 129 bytestream_put_be32(&buf, header_size);
156 129 bytestream_put_be32(&buf, XWD_VERSION); // file version
157 129 bytestream_put_be32(&buf, XWD_Z_PIXMAP); // pixmap format
158 129 bytestream_put_be32(&buf, pixdepth); // pixmap depth in pixels
159 129 bytestream_put_be32(&buf, avctx->width); // pixmap width in pixels
160 129 bytestream_put_be32(&buf, avctx->height); // pixmap height in pixels
161 129 bytestream_put_be32(&buf, 0); // bitmap x offset
162 129 bytestream_put_be32(&buf, be); // byte order
163 129 bytestream_put_be32(&buf, 32); // bitmap unit
164 129 bytestream_put_be32(&buf, bitorder); // bit-order of image data
165 129 bytestream_put_be32(&buf, bpad); // bitmap scan-line pad in bits
166 129 bytestream_put_be32(&buf, bpp); // bits per pixel
167 129 bytestream_put_be32(&buf, lsize); // bytes per scan-line
168 129 bytestream_put_be32(&buf, vclass); // visual class
169 129 bytestream_put_be32(&buf, rgb[0]); // red mask
170 129 bytestream_put_be32(&buf, rgb[1]); // green mask
171 129 bytestream_put_be32(&buf, rgb[2]); // blue mask
172 129 bytestream_put_be32(&buf, 8); // size of each bitmask in bits
173 129 bytestream_put_be32(&buf, ncolors); // number of colors
174 129 bytestream_put_be32(&buf, ncolors); // number of entries in color map
175 129 bytestream_put_be32(&buf, avctx->width); // window width
176 129 bytestream_put_be32(&buf, avctx->height); // window height
177 129 bytestream_put_be32(&buf, 0); // window upper left X coordinate
178 129 bytestream_put_be32(&buf, 0); // window upper left Y coordinate
179 129 bytestream_put_be32(&buf, 0); // window border width
180 129 bytestream_put_buffer(&buf, WINDOW_NAME, WINDOW_NAME_SIZE);
181
182
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 129 if (pix_fmt == AV_PIX_FMT_PAL8) {
183 ✗ memcpy(pal, p->data[1], sizeof(pal));
184 } else {
185 129 avpriv_set_systematic_pal2(pal, pix_fmt);
186 }
187
188
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 6785 for (i = 0; i < ncolors; i++) {
189 uint32_t val;
190 uint8_t red, green, blue;
191
192 6656 val = pal[i];
193 6656 red = (val >> 16) & 0xFF;
194 6656 green = (val >> 8) & 0xFF;
195 6656 blue = val & 0xFF;
196
197 6656 bytestream_put_be32(&buf, i); // colormap entry number
198 6656 bytestream_put_be16(&buf, red << 8);
199 6656 bytestream_put_be16(&buf, green << 8);
200 6656 bytestream_put_be16(&buf, blue << 8);
201 6656 bytestream_put_byte(&buf, 0x7); // bitmask flag
202 6656 bytestream_put_byte(&buf, 0); // padding
203 }
204
205 129 ptr = p->data[0];
206
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 37281 for (i = 0; i < avctx->height; i++) {
207 37152 bytestream_put_buffer(&buf, ptr, lsize);
208 37152 ptr += p->linesize[0];
209 }
210
211 129 *got_packet = 1;
212 129 return 0;
213 }
214
215 const FFCodec ff_xwd_encoder = {
216 .p.name = "xwd",
217 CODEC_LONG_NAME("XWD (X Window Dump) image"),
218 .p.type = AVMEDIA_TYPE_VIDEO,
219 .p.id = AV_CODEC_ID_XWD,
220 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
221 FF_CODEC_ENCODE_CB(xwd_encode_frame),
222 CODEC_PIXFMTS(AV_PIX_FMT_BGRA, AV_PIX_FMT_RGBA, AV_PIX_FMT_ARGB,
223 AV_PIX_FMT_ABGR, AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
224 AV_PIX_FMT_RGB565BE, AV_PIX_FMT_RGB565LE, AV_PIX_FMT_BGR565BE,
225 AV_PIX_FMT_BGR565LE, AV_PIX_FMT_RGB555BE, AV_PIX_FMT_RGB555LE,
226 AV_PIX_FMT_BGR555BE, AV_PIX_FMT_BGR555LE,
227 AV_PIX_FMT_RGB8, AV_PIX_FMT_BGR8,
228 AV_PIX_FMT_RGB4_BYTE, AV_PIX_FMT_BGR4_BYTE,
229 AV_PIX_FMT_PAL8, AV_PIX_FMT_GRAY8, AV_PIX_FMT_MONOWHITE),
230 };
231