/*
  * FLV Encoding specific code.
  * 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 "mpegvideo.h"

 #include "h263.h"

 #include "flv.h"
 
 void ff_flv_encode_picture_header(MpegEncContext * s, int picture_number)
 {
       int format;
 

       avpriv_align_put_bits(&s->pb);

 
       put_bits(&s->pb, 17, 1);
       put_bits(&s->pb, 5, (s->h263_flv-1)); /* 0: h263 escape codes 1: 11-bit escape codes */
       put_bits(&s->pb, 8, (((int64_t)s->picture_number * 30 * s->avctx->time_base.num) / //FIXME use timestamp
                            s->avctx->time_base.den) & 0xff); /* TemporalReference */
       if (s->width == 352 && s->height == 288)
         format = 2;
       else if (s->width == 176 && s->height == 144)
         format = 3;
       else if (s->width == 128 && s->height == 96)
         format = 4;
       else if (s->width == 320 && s->height == 240)
         format = 5;
       else if (s->width == 160 && s->height == 120)
         format = 6;
       else if (s->width <= 255 && s->height <= 255)
         format = 0; /* use 1 byte width & height */
       else
         format = 1; /* use 2 bytes width & height */
       put_bits(&s->pb, 3, format); /* PictureSize */
       if (format == 0) {
         put_bits(&s->pb, 8, s->width);
         put_bits(&s->pb, 8, s->height);
       } else if (format == 1) {
         put_bits(&s->pb, 16, s->width);
         put_bits(&s->pb, 16, s->height);
       }

       put_bits(&s->pb, 2, s->pict_type == AV_PICTURE_TYPE_P); /* PictureType */

       put_bits(&s->pb, 1, 1); /* DeblockingFlag: on */
       put_bits(&s->pb, 5, s->qscale); /* Quantizer */
       put_bits(&s->pb, 1, 0); /* ExtraInformation */
 
       if(s->h263_aic){
         s->y_dc_scale_table=
           s->c_dc_scale_table= ff_aic_dc_scale_table;
       }else{
         s->y_dc_scale_table=
           s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
       }
 }
 
 void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level, int run, int last){
     if(level < 64) { // 7-bit level
         put_bits(pb, 1, 0);
         put_bits(pb, 1, last);
         put_bits(pb, 6, run);
 
         put_sbits(pb, 7, slevel);
     } else {
         /* 11-bit level */
         put_bits(pb, 1, 1);
         put_bits(pb, 1, last);
         put_bits(pb, 6, run);
 
         put_sbits(pb, 11, slevel);
     }
 }

 FF_MPV_GENERIC_CLASS(flv)
 

 AVCodec ff_flv_encoder = {

     .name           = "flv",
     .type           = AVMEDIA_TYPE_VIDEO,

     .id             = AV_CODEC_ID_FLV1,

     .priv_data_size = sizeof(MpegEncContext),

     .init           = ff_MPV_encode_init,

     .encode2        = ff_MPV_encode_picture,

     .close          = ff_MPV_encode_end,

     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },

     .long_name      = NULL_IF_CONFIG_SMALL("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"),

     .priv_class     = &flv_class,

 };