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Diffstat (limited to 'libavcodec/cfhd.h')
-rw-r--r-- | libavcodec/cfhd.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/libavcodec/cfhd.h b/libavcodec/cfhd.h new file mode 100644 index 0000000000..67a0e4c32c --- /dev/null +++ b/libavcodec/cfhd.h @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2015 Kieran Kunhya + * + * 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 + */ + +#ifndef AVCODEC_CFHD_H +#define AVCODEC_CFHD_H + +#include <stdint.h> + +#include "libavutil/avassert.h" + +#include "avcodec.h" +#include "get_bits.h" + +#define VLC_BITS 9 +#define NB_VLC_TABLE_9 (71+3) +#define NB_VLC_TABLE_18 (263+1) + +typedef struct CFHD_RL_VLC_ELEM { + int16_t level; + int8_t len; + uint16_t run; +} CFHD_RL_VLC_ELEM; + +#define DWT_LEVELS 3 + +typedef struct SubBand { + int level; + int orientation; + int stride; + int a_width; + int width; + int a_height; + int height; + int pshift; + int quant; + uint8_t *ibuf; +} SubBand; + +typedef struct Plane { + int width; + int height; + ptrdiff_t stride; + + int16_t *idwt_buf; + int16_t *idwt_tmp; + + /* TODO: merge this into SubBand structure */ + int16_t *subband[10]; + int16_t *l_h[8]; + + SubBand band[DWT_LEVELS][4]; +} Plane; + +typedef struct CFHDContext { + AVCodecContext *avctx; + + CFHD_RL_VLC_ELEM table_9_rl_vlc[2088]; + VLC vlc_9; + + CFHD_RL_VLC_ELEM table_18_rl_vlc[4572]; + VLC vlc_18; + + GetBitContext gb; + + int chroma_x_shift; + int chroma_y_shift; + + int coded_width; + int coded_height; + int coded_format; + + int a_width; + int a_height; + int a_format; + + int bpc; + int channel_cnt; + int subband_cnt; + int channel_num; + uint8_t lowpass_precision; + uint16_t quantisation; + int wavelet_depth; + int pshift; + + int codebook; + int subband_num; + int level; + int subband_num_actual; + + uint8_t prescale_shift[3]; + Plane plane[4]; + +} CFHDContext; + +int ff_cfhd_init_vlcs(CFHDContext *s); + +#endif /* AVCODEC_CFHD_H */ |