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 27static 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 58AVCodec 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}; 67