jpeg_enc.h

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/* Straightforward (to be) optimized JPEG encoder for the YUV422 format 
 * based on mjpeg code from ffmpeg. 
 *
 * Copyright (c) 2002, Rik Snel
 * Parts from ffmpeg Copyright (c) 2000-2002 Fabrice Bellard
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * For an excellent introduction to the JPEG format, see:
 * http://www.ece.purdue.edu/~bourman/grad-labs/lab8/pdf/lab.pdf
 */


typedef struct {
	struct MpegEncContext *s;
	int cheap_upsample;
	int bw;
	int y_ps;
	int u_ps;
	int v_ps;
	int y_rs;
	int u_rs;
	int v_rs;
} jpeg_enc_t;

jpeg_enc_t *jpeg_enc_init(int w, int h, int y_psize, int y_rsize, 
		int u_psize, int u_rsize, int v_psize, int v_rsize,
		int cu, int q, int b);

int jpeg_enc_frame(jpeg_enc_t *j, unsigned char *y_data, 
		unsigned char *u_data, unsigned char *v_data, char *bufr);

void jpeg_enc_uninit(jpeg_enc_t *j);