/*
  * XBM image format
  *
  * Copyright (c) 2012 Paul B Mahol
  *

  * This file is part of FFmpeg.

  *

  * FFmpeg is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *

  * FFmpeg is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public

  * License along with FFmpeg; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "avcodec.h"
 #include "internal.h"

 #include "mathops.h"

 
 static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                             const AVFrame *p, int *got_packet)
 {
     int i, j, ret, size, linesize;
     uint8_t *ptr, *buf;
 
     linesize = (avctx->width + 7) / 8;
     size     = avctx->height * (linesize * 7 + 2) + 110;

     if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0)

         return ret;
 
     buf = pkt->data;
     ptr = p->data[0];
 
     buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width);
     buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height);
     buf += snprintf(buf, 40, "static unsigned char image_bits[] = {\n");
     for (i = 0; i < avctx->height; i++) {
         for (j = 0; j < linesize; j++)

             buf += snprintf(buf, 7, " 0x%02X,", ff_reverse[*ptr++]);

         ptr += p->linesize[0] - linesize;
         buf += snprintf(buf, 2, "\n");
     }
     buf += snprintf(buf, 5, " };\n");
 
     pkt->size   = buf - pkt->data;
     pkt->flags |= AV_PKT_FLAG_KEY;
     *got_packet = 1;
     return 0;
 }
 
 AVCodec ff_xbm_encoder = {
     .name         = "xbm",

     .long_name    = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"),

     .type         = AVMEDIA_TYPE_VIDEO,

     .id           = AV_CODEC_ID_XBM,

     .encode2      = xbm_encode_frame,

     .pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE,

                                                    AV_PIX_FMT_NONE },

 };