yading@10: /*
yading@10:  * XBM image format
yading@10:  *
yading@10:  * Copyright (c) 2012 Paul B Mahol
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #include "avcodec.h"
yading@10: #include "internal.h"
yading@10: #include "mathops.h"
yading@10: 
yading@10: static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
yading@10:                             const AVFrame *p, int *got_packet)
yading@10: {
yading@10:     int i, j, ret, size, linesize;
yading@10:     uint8_t *ptr, *buf;
yading@10: 
yading@10:     linesize = (avctx->width + 7) / 8;
yading@10:     size     = avctx->height * (linesize * 7 + 2) + 110;
yading@10:     if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0)
yading@10:         return ret;
yading@10: 
yading@10:     buf = pkt->data;
yading@10:     ptr = p->data[0];
yading@10: 
yading@10:     buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width);
yading@10:     buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height);
yading@10:     buf += snprintf(buf, 40, "static unsigned char image_bits[] = {\n");
yading@10:     for (i = 0; i < avctx->height; i++) {
yading@10:         for (j = 0; j < linesize; j++)
yading@10:             buf += snprintf(buf, 7, " 0x%02X,", ff_reverse[*ptr++]);
yading@10:         ptr += p->linesize[0] - linesize;
yading@10:         buf += snprintf(buf, 2, "\n");
yading@10:     }
yading@10:     buf += snprintf(buf, 5, " };\n");
yading@10: 
yading@10:     pkt->size   = buf - pkt->data;
yading@10:     pkt->flags |= AV_PKT_FLAG_KEY;
yading@10:     *got_packet = 1;
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: AVCodec ff_xbm_encoder = {
yading@10:     .name         = "xbm",
yading@10:     .type         = AVMEDIA_TYPE_VIDEO,
yading@10:     .id           = AV_CODEC_ID_XBM,
yading@10:     .encode2      = xbm_encode_frame,
yading@10:     .pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE,
yading@10:                                                    AV_PIX_FMT_NONE },
yading@10:     .long_name    = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"),
yading@10: };