| /* |
| * Copyright (c) 2002-2003 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of |
| * the algorithm used |
| * |
| * 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 |
| * huffyuv codec for libavcodec. |
| */ |
| |
| #ifndef AVCODEC_HUFFYUV_H |
| #define AVCODEC_HUFFYUV_H |
| |
| #include <stdint.h> |
| |
| #include "avcodec.h" |
| #include "dsputil.h" |
| #include "get_bits.h" |
| #include "put_bits.h" |
| |
| #define VLC_BITS 11 |
| |
| #if HAVE_BIGENDIAN |
| #define B 3 |
| #define G 2 |
| #define R 1 |
| #define A 0 |
| #else |
| #define B 0 |
| #define G 1 |
| #define R 2 |
| #define A 3 |
| #endif |
| |
| typedef enum Predictor { |
| LEFT = 0, |
| PLANE, |
| MEDIAN, |
| } Predictor; |
| |
| typedef struct HYuvContext { |
| AVCodecContext *avctx; |
| Predictor predictor; |
| GetBitContext gb; |
| PutBitContext pb; |
| int interlaced; |
| int decorrelate; |
| int bitstream_bpp; |
| int version; |
| int yuy2; //use yuy2 instead of 422P |
| int bgr32; //use bgr32 instead of bgr24 |
| int width, height; |
| int flags; |
| int context; |
| int picture_number; |
| int last_slice_end; |
| uint8_t *temp[3]; |
| uint64_t stats[3][256]; |
| uint8_t len[3][256]; |
| uint32_t bits[3][256]; |
| uint32_t pix_bgr_map[1<<VLC_BITS]; |
| VLC vlc[6]; //Y,U,V,YY,YU,YV |
| AVFrame picture; |
| uint8_t *bitstream_buffer; |
| unsigned int bitstream_buffer_size; |
| DSPContext dsp; |
| } HYuvContext; |
| |
| void ff_huffyuv_common_init(AVCodecContext *s); |
| void ff_huffyuv_common_end(HYuvContext *s); |
| int ff_huffyuv_alloc_temp(HYuvContext *s); |
| int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table); |
| |
| #endif /* AVCODEC_HUFFYUV_H */ |