1 /* 2 * RTJpeg decoding functions 3 * copyright (c) 2006 Reimar Doeffinger 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg 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 GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #ifndef AVCODEC_RTJPEG_H 23 #define AVCODEC_RTJPEG_H 24 25 #include <stdint.h> 26 27 #include "libavutil/mem.h" 28 #include "idctdsp.h" 29 30 #define RTJPEG_FILE_VERSION 0 31 #define RTJPEG_HEADER_SIZE 12 32 33 typedef struct RTJpegContext { 34 int w, h; 35 IDCTDSPContext idsp; 36 uint8_t scan[64]; 37 uint32_t lquant[64]; 38 uint32_t cquant[64]; 39 DECLARE_ALIGNED(16, int16_t, block)[64]; 40 } RTJpegContext; 41 42 void ff_rtjpeg_init(RTJpegContext *c, AVCodecContext *avctx); 43 44 void ff_rtjpeg_decode_init(RTJpegContext *c, int width, int height, 45 const uint32_t *lquant, const uint32_t *cquant); 46 47 int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f, 48 const uint8_t *buf, int buf_size); 49 #endif /* AVCODEC_RTJPEG_H */ 50