yading@10: /*
yading@10:  * Common Ut Video header
yading@10:  * Copyright (c) 2011 Konstantin Shishkov
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_UTVIDEO_H
yading@10: #define AVCODEC_UTVIDEO_H
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * Common Ut Video header
yading@10:  */
yading@10: 
yading@10: #include "libavutil/common.h"
yading@10: #include "avcodec.h"
yading@10: #include "dsputil.h"
yading@10: 
yading@10: enum {
yading@10:     PRED_NONE = 0,
yading@10:     PRED_LEFT,
yading@10:     PRED_GRADIENT,
yading@10:     PRED_MEDIAN,
yading@10: };
yading@10: 
yading@10: enum {
yading@10:     COMP_NONE = 0,
yading@10:     COMP_HUFF,
yading@10: };
yading@10: 
yading@10: /*
yading@10:  * "Original format" markers.
yading@10:  * Based on values gotten from the official VFW encoder.
yading@10:  * They are not used during decoding, but they do have
yading@10:  * an informative role on seeing what was input
yading@10:  * to the encoder.
yading@10:  */
yading@10: enum {
yading@10:     UTVIDEO_RGB  = MKTAG(0x00, 0x00, 0x01, 0x18),
yading@10:     UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18),
yading@10:     UTVIDEO_420  = MKTAG('Y', 'V', '1', '2'),
yading@10:     UTVIDEO_422  = MKTAG('Y', 'U', 'Y', '2'),
yading@10: };
yading@10: 
yading@10: /* Mapping of libavcodec prediction modes to Ut Video's */
yading@10: extern const int ff_ut_pred_order[5];
yading@10: 
yading@10: /* Order of RGB(A) planes in Ut Video */
yading@10: extern const int ff_ut_rgb_order[4];
yading@10: 
yading@10: typedef struct UtvideoContext {
yading@10:     AVCodecContext *avctx;
yading@10:     DSPContext     dsp;
yading@10: 
yading@10:     uint32_t frame_info_size, flags, frame_info;
yading@10:     int      planes;
yading@10:     int      slices;
yading@10:     int      compression;
yading@10:     int      interlaced;
yading@10:     int      frame_pred;
yading@10: 
yading@10:     int      slice_stride;
yading@10:     uint8_t *slice_bits, *slice_buffer[4];
yading@10:     int      slice_bits_size;
yading@10: } UtvideoContext;
yading@10: 
yading@10: typedef struct HuffEntry {
yading@10:     uint8_t  sym;
yading@10:     uint8_t  len;
yading@10:     uint32_t code;
yading@10: } HuffEntry;
yading@10: 
yading@10: /* Compare huffman tree nodes */
yading@10: int ff_ut_huff_cmp_len(const void *a, const void *b);
yading@10: 
yading@10: #endif /* AVCODEC_UTVIDEO_H */