4 * Copyright (c) 2012 Paul B Mahol
6 * This file is part of FFmpeg.
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.
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.
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
27 static av_cold int xbm_encode_init(AVCodecContext *avctx)
29 avctx->coded_frame = avcodec_alloc_frame();
30 if (!avctx->coded_frame)
31 return AVERROR(ENOMEM);
32 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
37 static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
38 const AVFrame *p, int *got_packet)
40 int i, j, ret, size, linesize;
43 linesize = (avctx->width + 7) / 8;
44 size = avctx->height * (linesize * 7 + 2) + 110;
45 if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0)
51 buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width);
52 buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height);
53 buf += snprintf(buf, 40, "static unsigned char image_bits[] = {\n");
54 for (i = 0; i < avctx->height; i++) {
55 for (j = 0; j < linesize; j++)
56 buf += snprintf(buf, 7, " 0x%02X,", ff_reverse[*ptr++]);
57 ptr += p->linesize[0] - linesize;
58 buf += snprintf(buf, 2, "\n");
60 buf += snprintf(buf, 5, " };\n");
62 pkt->size = buf - pkt->data;
63 pkt->flags |= AV_PKT_FLAG_KEY;
68 static av_cold int xbm_encode_close(AVCodecContext *avctx)
70 av_freep(&avctx->coded_frame);
75 AVCodec ff_xbm_encoder = {
77 .type = AVMEDIA_TYPE_VIDEO,
78 .id = AV_CODEC_ID_XBM,
79 .init = xbm_encode_init,
80 .encode2 = xbm_encode_frame,
81 .close = xbm_encode_close,
82 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE,
84 .long_name = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"),