libvo/jpeg_enc.h

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