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118 lines
3.0 KiB
118 lines
3.0 KiB
/* Copyright (C) 2005 Ole André Vadla Ravnås <oleavr@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef MIMIC_PRIVATE_H
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#define MIMIC_PRIVATE_H
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#include "mimic.h"
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#define ENCODER_BUFFER_SIZE 16384
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#define ENCODER_QUALITY_DEFAULT 0
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#define ENCODER_QUALITY_MIN 0
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#define ENCODER_QUALITY_MAX 10000
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struct _MimCtx {
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gboolean encoder_initialized;
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gboolean decoder_initialized;
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gint frame_width;
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gint frame_height;
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gint quality;
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gint num_coeffs;
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gint y_stride;
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gint y_row_count;
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gint y_size;
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gint crcb_stride;
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gint crcb_row_count;
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gint crcb_size;
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gint num_vblocks_y;
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gint num_hblocks_y;
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gint num_vblocks_cbcr;
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gint num_hblocks_cbcr;
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guchar *cur_frame_buf;
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guchar *prev_frame_buf;
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gint8 vlcdec_lookup[2296];
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gchar *data_buffer;
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guint data_index;
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guint32 cur_chunk;
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gint cur_chunk_len;
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guint32 *chunk_ptr;
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gboolean read_odd;
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gint frame_num;
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gint ptr_index;
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guchar *buf_ptrs[16];
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};
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typedef struct {
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guchar length1;
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guint32 part1;
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guchar length2;
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guint32 part2;
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} VlcSymbol;
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typedef struct {
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guint32 magic;
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guchar pos_add;
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guchar num_bits;
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} VlcMagic;
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void _mimic_init(MimCtx *ctx, gint width, gint height);
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guchar _clamp_value(gint value);
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guint32 _read_bits(MimCtx *ctx, gint num_bits);
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void _write_bits(MimCtx *ctx, guint32 bits, gint length);
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void _vlc_encode_block(MimCtx *ctx, const gint *block, gint num_coeffs);
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gboolean _vlc_decode_block(MimCtx *ctx, gint *block, gint num_coeffs);
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void _fdct_quant_block(MimCtx *ctx, gint *block, const guchar *src,
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gint stride, gboolean is_chrom, gint num_coeffs);
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void _idct_dequant_block(MimCtx *ctx, gint *block, gboolean is_chrom);
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VlcMagic *_find_magic(guint magic);
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void _initialize_vlcdec_lookup(gint8 *lookup_tbl);
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void _rgb_to_yuv(const guchar *input_rgb,
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guchar *output_y,
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guchar *output_cb,
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guchar *output_cr,
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gint width,
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gint height);
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void _yuv_to_rgb(const guchar *input_y,
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const guchar *input_cb,
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const guchar *input_cr,
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guchar *output_rgb,
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guint width,
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guint height);
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void _deblock(guchar *blocks, guint stride, guint row_count);
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#endif
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