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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 "avcodec.h" | |
24 | #include "internal.h" | |
25 | #include "mathops.h" | |
26 | ||
27 | static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
28 | const AVFrame *p, int *got_packet) | |
29 | { | |
30 | int i, j, ret, size, linesize; | |
31 | uint8_t *ptr, *buf; | |
32 | ||
33 | linesize = (avctx->width + 7) / 8; | |
34 | size = avctx->height * (linesize * 7 + 2) + 110; | |
35 | if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0) | |
36 | return ret; | |
37 | ||
38 | buf = pkt->data; | |
39 | ptr = p->data[0]; | |
40 | ||
41 | buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width); | |
42 | buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height); | |
43 | buf += snprintf(buf, 40, "static unsigned char image_bits[] = {\n"); | |
44 | for (i = 0; i < avctx->height; i++) { | |
45 | for (j = 0; j < linesize; j++) | |
46 | buf += snprintf(buf, 7, " 0x%02X,", ff_reverse[*ptr++]); | |
47 | ptr += p->linesize[0] - linesize; | |
48 | buf += snprintf(buf, 2, "\n"); | |
49 | } | |
50 | buf += snprintf(buf, 5, " };\n"); | |
51 | ||
52 | pkt->size = buf - pkt->data; | |
53 | pkt->flags |= AV_PKT_FLAG_KEY; | |
54 | *got_packet = 1; | |
55 | return 0; | |
56 | } | |
57 | ||
58 | AVCodec ff_xbm_encoder = { | |
59 | .name = "xbm", | |
60 | .long_name = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"), | |
61 | .type = AVMEDIA_TYPE_VIDEO, | |
62 | .id = AV_CODEC_ID_XBM, | |
63 | .encode2 = xbm_encode_frame, | |
64 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE, | |
65 | AV_PIX_FMT_NONE }, | |
66 | }; |