speedhqenc.h

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/*
 * SpeedHQ encoder
 * Copyright (c) 2000, 2001 Fabrice Bellard
 * Copyright (c) 2003 Alex Beregszaszi
 * Copyright (c) 2003-2004 Michael Niedermayer
 *
 * 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
 * SpeedHQ encoder.
 */
 
#ifndef AVCODEC_SPEEDHQENC_H
#define AVCODEC_SPEEDHQENC_H
 
typedef struct MPVEncContext MPVEncContext;
 
void ff_speedhq_end_slice(MPVEncContext *s);
 
static inline int ff_speedhq_mb_rows_in_slice(int slice_num, int mb_height)
{
    return mb_height / 4 + (slice_num < (mb_height % 4));
}
 
static inline int ff_speedhq_mb_y_order_to_mb(int mb_y_order, int mb_height, int *first_in_slice)
{
    int slice_num = 0;
    while (mb_y_order >= ff_speedhq_mb_rows_in_slice(slice_num, mb_height)) {
         mb_y_order -= ff_speedhq_mb_rows_in_slice(slice_num, mb_height);
         slice_num++;
    }
    *first_in_slice = (mb_y_order == 0);
    return mb_y_order * 4 + slice_num;
}
 
#endif /* AVCODEC_SPEEDHQENC_H */