mjpegenc.h
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上传日期:2022-06-04
资源大小:8887k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * MJPEG encoder
- * Copyright (c) 2000, 2001 Fabrice Bellard.
- * Copyright (c) 2003 Alex Beregszaszi
- * Copyright (c) 2003-2004 Michael Niedermayer
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- * by Alex Beregszaszi
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file mjpegenc.h
- * MJPEG encoder.
- */
- #ifndef FFMPEG_MJPEGENC_H
- #define FFMPEG_MJPEGENC_H
- #include "dsputil.h"
- #include "mpegvideo.h"
- typedef struct MJpegContext {
- uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
- uint16_t huff_code_dc_luminance[12];
- uint8_t huff_size_dc_chrominance[12];
- uint16_t huff_code_dc_chrominance[12];
- uint8_t huff_size_ac_luminance[256];
- uint16_t huff_code_ac_luminance[256];
- uint8_t huff_size_ac_chrominance[256];
- uint16_t huff_code_ac_chrominance[256];
- } MJpegContext;
- int ff_mjpeg_encode_init(MpegEncContext *s);
- void ff_mjpeg_encode_close(MpegEncContext *s);
- void ff_mjpeg_encode_picture_header(MpegEncContext *s);
- void ff_mjpeg_encode_picture_trailer(MpegEncContext *s);
- void ff_mjpeg_encode_stuffing(PutBitContext *pbc);
- void ff_mjpeg_encode_dc(MpegEncContext *s, int val,
- uint8_t *huff_size, uint16_t *huff_code);
- void ff_mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64]);
- #endif /* FFMPEG_MJPEGENC_H */