libvo/jpeg_enc.h

   1 /*
   2  * straightforward (to be) optimized JPEG encoder for the YUV422 format
   3  * based on MJPEG code from FFmpeg
   4  *
   5  * For an excellent introduction to the JPEG format, see:
   6  * http://www.ece.purdue.edu/~bouman/grad-labs/lab8/pdf/lab.pdf
   7  *
   8  * Copyright (c) 2002, Rik Snel
   9  * parts from FFmpeg Copyright (c) 2000-2002 Fabrice Bellard
  10  *
  11  * This file is part of MPlayer.
  12  *
  13  * MPlayer is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * MPlayer is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License along
  24  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  25  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  26  */
  27
  28 #ifndef MPLAYER_JPEG_ENC_H
  29 #define MPLAYER_JPEG_ENC_H
  30
  31 typedef struct {
  32         struct MpegEncContext *s;
  33         int cheap_upsample;
  34         int bw;
  35         int y_ps;
  36         int u_ps;
  37         int v_ps;
  38         int y_rs;
  39         int u_rs;
  40         int v_rs;
  41 } jpeg_enc_t;
  42
  43 jpeg_enc_t *jpeg_enc_init(int w, int h, int y_psize, int y_rsize,
  44                 int u_psize, int u_rsize, int v_psize, int v_rsize,
  45                 int cu, int q, int b);
  46
  47 int jpeg_enc_frame(jpeg_enc_t *j, unsigned char *y_data,
  48                 unsigned char *u_data, unsigned char *v_data, char *bufr);
  49
  50 void jpeg_enc_uninit(jpeg_enc_t *j);
  51
  52 #endif /* MPLAYER_JPEG_ENC_H */