FFmpeg/libavcodec/asv.c

/*
 * Copyright (c) 2003 Michael Niedermayer
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * ASUS V1/V2 encoder/decoder common data
 */

#include <stdint.h>

#include "asv.h"
#include "avcodec.h"

const uint8_t ff_asv_scantab[64] = {
    0x00,0x08,0x01,0x09,0x10,0x18,0x11,0x19,
    0x02,0x0A,0x03,0x0B,0x12,0x1A,0x13,0x1B,
    0x04,0x0C,0x05,0x0D,0x20,0x28,0x21,0x29,
    0x06,0x0E,0x07,0x0F,0x14,0x1C,0x15,0x1D,
    0x22,0x2A,0x23,0x2B,0x30,0x38,0x31,0x39,
    0x16,0x1E,0x17,0x1F,0x24,0x2C,0x25,0x2D,
    0x32,0x3A,0x33,0x3B,0x26,0x2E,0x27,0x2F,
    0x34,0x3C,0x35,0x3D,0x36,0x3E,0x37,0x3F,
};

const uint8_t ff_asv_ccp_tab[17][2] = {
    {0x2,2}, {0x7,5}, {0xB,5}, {0x3,5},
    {0xD,5}, {0x5,5}, {0x9,5}, {0x1,5},
    {0xE,5}, {0x6,5}, {0xA,5}, {0x2,5},
    {0xC,5}, {0x4,5}, {0x8,5}, {0x3,2},
    {0xF,5}, //EOB
};

const uint8_t ff_asv_level_tab[7][2] = {
    {3,4}, {3,3}, {3,2}, {0,3}, {2,2}, {2,3}, {2,4}
};

const uint8_t ff_asv_dc_ccp_tab[8][2] = {
    {0x1,2}, {0xD,4}, {0xF,4}, {0xC,4},
    {0x5,3}, {0xE,4}, {0x4,3}, {0x0,2},
};

const uint8_t ff_asv_ac_ccp_tab[16][2] = {
    {0x00,2}, {0x3B,6}, {0x0A,4}, {0x3A,6},
    {0x02,3}, {0x39,6}, {0x3C,6}, {0x38,6},
    {0x03,3}, {0x3D,6}, {0x08,4}, {0x1F,5},
    {0x09,4}, {0x0B,4}, {0x0D,4}, {0x0C,4},
};

const uint8_t ff_asv2_level_tab[63][2] = {
    {0x3F,10},{0x2F,10},{0x37,10},{0x27,10},{0x3B,10},{0x2B,10},{0x33,10},{0x23,10},
    {0x3D,10},{0x2D,10},{0x35,10},{0x25,10},{0x39,10},{0x29,10},{0x31,10},{0x21,10},
    {0x1F, 8},{0x17, 8},{0x1B, 8},{0x13, 8},{0x1D, 8},{0x15, 8},{0x19, 8},{0x11, 8},
    {0x0F, 6},{0x0B, 6},{0x0D, 6},{0x09, 6},
    {0x07, 4},{0x05, 4},
    {0x03, 2},
    {0x00, 5},
    {0x02, 2},
    {0x04, 4},{0x06, 4},
    {0x08, 6},{0x0C, 6},{0x0A, 6},{0x0E, 6},
    {0x10, 8},{0x18, 8},{0x14, 8},{0x1C, 8},{0x12, 8},{0x1A, 8},{0x16, 8},{0x1E, 8},
    {0x20,10},{0x30,10},{0x28,10},{0x38,10},{0x24,10},{0x34,10},{0x2C,10},{0x3C,10},
    {0x22,10},{0x32,10},{0x2A,10},{0x3A,10},{0x26,10},{0x36,10},{0x2E,10},{0x3E,10},
};

av_cold void ff_asv_common_init(AVCodecContext *avctx) {
    ASV1Context * const a = avctx->priv_data;

    ff_dsputil_init(&a->dsp, avctx);

    a->mb_width   = (avctx->width  + 15) / 16;
    a->mb_height  = (avctx->height + 15) / 16;
    a->mb_width2  = (avctx->width  + 0) / 16;
    a->mb_height2 = (avctx->height + 0) / 16;

    avctx->coded_frame= &a->picture;
    a->avctx= avctx;
}