| 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 */ |