103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2002-2014 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 "bswapdsp.h"
|
||
|
|
#include "get_bits.h"
|
||
|
|
#include "huffyuvdsp.h"
|
||
|
|
#include "huffyuvencdsp.h"
|
||
|
|
#include "put_bits.h"
|
||
|
|
#include "lossless_videodsp.h"
|
||
|
|
#include "lossless_videoencdsp.h"
|
||
|
|
|
||
|
|
#define VLC_BITS 12
|
||
|
|
|
||
|
|
#define MAX_BITS 16
|
||
|
|
#define MAX_N (1<<MAX_BITS)
|
||
|
|
#define MAX_VLC_N 16384
|
||
|
|
|
||
|
|
typedef enum Predictor {
|
||
|
|
LEFT = 0,
|
||
|
|
PLANE,
|
||
|
|
MEDIAN,
|
||
|
|
} Predictor;
|
||
|
|
|
||
|
|
typedef struct HYuvContext {
|
||
|
|
AVClass *class;
|
||
|
|
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 bps;
|
||
|
|
int n; // 1<<bps
|
||
|
|
int vlc_n; // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
|
||
|
|
int alpha;
|
||
|
|
int chroma;
|
||
|
|
int yuv;
|
||
|
|
int chroma_h_shift;
|
||
|
|
int chroma_v_shift;
|
||
|
|
int width, height;
|
||
|
|
int flags;
|
||
|
|
int context;
|
||
|
|
int picture_number;
|
||
|
|
int last_slice_end;
|
||
|
|
uint8_t *temp[3];
|
||
|
|
uint16_t *temp16[3]; ///< identical to temp but 16bit type
|
||
|
|
uint64_t stats[4][MAX_VLC_N];
|
||
|
|
uint8_t len[4][MAX_VLC_N];
|
||
|
|
uint32_t bits[4][MAX_VLC_N];
|
||
|
|
uint32_t pix_bgr_map[1<<VLC_BITS];
|
||
|
|
VLC vlc[8]; //Y,U,V,A,YY,YU,YV,AA
|
||
|
|
uint8_t *bitstream_buffer;
|
||
|
|
unsigned int bitstream_buffer_size;
|
||
|
|
BswapDSPContext bdsp;
|
||
|
|
HuffYUVDSPContext hdsp;
|
||
|
|
HuffYUVEncDSPContext hencdsp;
|
||
|
|
LLVidDSPContext llviddsp;
|
||
|
|
LLVidEncDSPContext llvidencdsp;
|
||
|
|
int non_determ; // non-deterministic, multi-threaded encoder allowed
|
||
|
|
} 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, int n);
|
||
|
|
|
||
|
|
#endif /* AVCODEC_HUFFYUV_H */
|