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1 3d2e8cce Michael Niedermayer
/*
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 * ASUS V1/V2 codec
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 * Copyright (c) 2003 Michael Niedermayer
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg 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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 * FFmpeg 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 FFmpeg; 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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/**
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 * @file
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 * ASUS V1/V2 codec.
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 */
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#include "avcodec.h"
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#include "libavutil/common.h"
29 b2755007 Stefano Sabatini
#include "put_bits.h"
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#include "dsputil.h"
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#include "mpeg12data.h"
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//#undef NDEBUG
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//#include <assert.h>
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#define VLC_BITS 6
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#define ASV2_LEVEL_VLC_BITS 10
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typedef struct ASV1Context{
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    AVCodecContext *avctx;
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    DSPContext dsp;
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    AVFrame picture;
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    PutBitContext pb;
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    GetBitContext gb;
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    ScanTable scantable;
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    int inv_qscale;
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    int mb_width;
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    int mb_height;
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    int mb_width2;
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    int mb_height2;
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    DECLARE_ALIGNED(16, DCTELEM, block)[6][64];
52 20e7c8ae Måns Rullgård
    uint16_t intra_matrix[64];
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    int q_intra_matrix[64];
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    uint8_t *bitstream_buffer;
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    unsigned int bitstream_buffer_size;
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} ASV1Context;
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static const uint8_t scantab[64]={
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    0x00,0x08,0x01,0x09,0x10,0x18,0x11,0x19,
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    0x02,0x0A,0x03,0x0B,0x12,0x1A,0x13,0x1B,
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    0x04,0x0C,0x05,0x0D,0x20,0x28,0x21,0x29,
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    0x06,0x0E,0x07,0x0F,0x14,0x1C,0x15,0x1D,
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    0x22,0x2A,0x23,0x2B,0x30,0x38,0x31,0x39,
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    0x16,0x1E,0x17,0x1F,0x24,0x2C,0x25,0x2D,
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    0x32,0x3A,0x33,0x3B,0x26,0x2E,0x27,0x2F,
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    0x34,0x3C,0x35,0x3D,0x36,0x3E,0x37,0x3F,
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};
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static const uint8_t ccp_tab[17][2]={
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    {0x2,2}, {0x7,5}, {0xB,5}, {0x3,5},
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    {0xD,5}, {0x5,5}, {0x9,5}, {0x1,5},
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    {0xE,5}, {0x6,5}, {0xA,5}, {0x2,5},
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    {0xC,5}, {0x4,5}, {0x8,5}, {0x3,2},
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    {0xF,5}, //EOB
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};
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static const uint8_t level_tab[7][2]={
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    {3,4}, {3,3}, {3,2}, {0,3}, {2,2}, {2,3}, {2,4}
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};
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static const uint8_t dc_ccp_tab[8][2]={
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    {0x1,2}, {0xD,4}, {0xF,4}, {0xC,4},
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    {0x5,3}, {0xE,4}, {0x4,3}, {0x0,2},
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};
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static const uint8_t ac_ccp_tab[16][2]={
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    {0x00,2}, {0x3B,6}, {0x0A,4}, {0x3A,6},
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    {0x02,3}, {0x39,6}, {0x3C,6}, {0x38,6},
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    {0x03,3}, {0x3D,6}, {0x08,4}, {0x1F,5},
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    {0x09,4}, {0x0B,4}, {0x0D,4}, {0x0C,4},
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};
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static const uint8_t asv2_level_tab[63][2]={
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    {0x3F,10},{0x2F,10},{0x37,10},{0x27,10},{0x3B,10},{0x2B,10},{0x33,10},{0x23,10},
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    {0x3D,10},{0x2D,10},{0x35,10},{0x25,10},{0x39,10},{0x29,10},{0x31,10},{0x21,10},
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    {0x1F, 8},{0x17, 8},{0x1B, 8},{0x13, 8},{0x1D, 8},{0x15, 8},{0x19, 8},{0x11, 8},
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    {0x0F, 6},{0x0B, 6},{0x0D, 6},{0x09, 6},
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    {0x07, 4},{0x05, 4},
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    {0x03, 2},
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    {0x00, 5},
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    {0x02, 2},
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    {0x04, 4},{0x06, 4},
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    {0x08, 6},{0x0C, 6},{0x0A, 6},{0x0E, 6},
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    {0x10, 8},{0x18, 8},{0x14, 8},{0x1C, 8},{0x12, 8},{0x1A, 8},{0x16, 8},{0x1E, 8},
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    {0x20,10},{0x30,10},{0x28,10},{0x38,10},{0x24,10},{0x34,10},{0x2C,10},{0x3C,10},
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    {0x22,10},{0x32,10},{0x2A,10},{0x3A,10},{0x26,10},{0x36,10},{0x2E,10},{0x3E,10},
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};
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static VLC ccp_vlc;
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static VLC level_vlc;
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static VLC dc_ccp_vlc;
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static VLC ac_ccp_vlc;
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static VLC asv2_level_vlc;
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static av_cold void init_vlcs(ASV1Context *a){
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    static int done = 0;
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    if (!done) {
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        done = 1;
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        INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17,
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                 &ccp_tab[0][1], 2, 1,
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                 &ccp_tab[0][0], 2, 1, 64);
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        INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8,
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                 &dc_ccp_tab[0][1], 2, 1,
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                 &dc_ccp_tab[0][0], 2, 1, 64);
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        INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16,
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                 &ac_ccp_tab[0][1], 2, 1,
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                 &ac_ccp_tab[0][0], 2, 1, 64);
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        INIT_VLC_STATIC(&level_vlc,  VLC_BITS, 7,
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                 &level_tab[0][1], 2, 1,
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                 &level_tab[0][0], 2, 1, 64);
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        INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
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                 &asv2_level_tab[0][1], 2, 1,
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                 &asv2_level_tab[0][0], 2, 1, 1024);
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    }
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}
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//FIXME write a reversed bitstream reader to avoid the double reverse
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static inline int asv2_get_bits(GetBitContext *gb, int n){
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    return av_reverse[ get_bits(gb, n) << (8-n) ];
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}
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static inline void asv2_put_bits(PutBitContext *pb, int n, int v){
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    put_bits(pb, n, av_reverse[ v << (8-n) ]);
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}
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static inline int asv1_get_level(GetBitContext *gb){
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    int code= get_vlc2(gb, level_vlc.table, VLC_BITS, 1);
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    if(code==3) return get_sbits(gb, 8);
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    else        return code - 3;
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}
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static inline int asv2_get_level(GetBitContext *gb){
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    int code= get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1);
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    if(code==31) return (int8_t)asv2_get_bits(gb, 8);
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    else         return code - 31;
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}
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static inline void asv1_put_level(PutBitContext *pb, int level){
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    unsigned int index= level + 3;
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    if(index <= 6) put_bits(pb, level_tab[index][1], level_tab[index][0]);
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    else{
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        put_bits(pb, level_tab[3][1], level_tab[3][0]);
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        put_sbits(pb, 8, level);
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    }
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}
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static inline void asv2_put_level(PutBitContext *pb, int level){
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    unsigned int index= level + 31;
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    if(index <= 62) put_bits(pb, asv2_level_tab[index][1], asv2_level_tab[index][0]);
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    else{
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        put_bits(pb, asv2_level_tab[31][1], asv2_level_tab[31][0]);
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        asv2_put_bits(pb, 8, level&0xFF);
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    }
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}
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static inline int asv1_decode_block(ASV1Context *a, DCTELEM block[64]){
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    int i;
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    block[0]= 8*get_bits(&a->gb, 8);
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    for(i=0; i<11; i++){
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        const int ccp= get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1);
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        if(ccp){
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            if(ccp == 16) break;
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            if(ccp < 0 || i>=10){
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                av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n");
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                return -1;
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            }
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            if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;
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            if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;
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            if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;
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            if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;
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        }
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    }
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    return 0;
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}
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static inline int asv2_decode_block(ASV1Context *a, DCTELEM block[64]){
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    int i, count, ccp;
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    count= asv2_get_bits(&a->gb, 4);
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    block[0]= 8*asv2_get_bits(&a->gb, 8);
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    ccp= get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1);
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    if(ccp){
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        if(ccp&4) block[a->scantable.permutated[1]]= (asv2_get_level(&a->gb) * a->intra_matrix[1])>>4;
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        if(ccp&2) block[a->scantable.permutated[2]]= (asv2_get_level(&a->gb) * a->intra_matrix[2])>>4;
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        if(ccp&1) block[a->scantable.permutated[3]]= (asv2_get_level(&a->gb) * a->intra_matrix[3])>>4;
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    }
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    for(i=1; i<count+1; i++){
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        const int ccp= get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1);
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        if(ccp){
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            if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;
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            if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;
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            if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;
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            if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;
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        }
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    }
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    return 0;
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}
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static inline void asv1_encode_block(ASV1Context *a, DCTELEM block[64]){
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    int i;
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    int nc_count=0;
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    put_bits(&a->pb, 8, (block[0] + 32)>>6);
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    block[0]= 0;
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    for(i=0; i<10; i++){
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        const int index= scantab[4*i];
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        int ccp=0;
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        if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
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        if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
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        if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
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        if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
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253
        if(ccp){
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            for(;nc_count; nc_count--)
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                put_bits(&a->pb, ccp_tab[0][1], ccp_tab[0][0]);
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            put_bits(&a->pb, ccp_tab[ccp][1], ccp_tab[ccp][0]);
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            if(ccp&8) asv1_put_level(&a->pb, block[index + 0]);
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            if(ccp&4) asv1_put_level(&a->pb, block[index + 8]);
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            if(ccp&2) asv1_put_level(&a->pb, block[index + 1]);
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            if(ccp&1) asv1_put_level(&a->pb, block[index + 9]);
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        }else{
264
            nc_count++;
265
        }
266
    }
267
    put_bits(&a->pb, ccp_tab[16][1], ccp_tab[16][0]);
268
}
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static inline void asv2_encode_block(ASV1Context *a, DCTELEM block[64]){
271
    int i;
272
    int count=0;
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    for(count=63; count>3; count--){
275
        const int index= scantab[count];
276
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        if( (block[index]*a->q_intra_matrix[index] + (1<<15))>>16 )
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            break;
279
    }
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    count >>= 2;
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    asv2_put_bits(&a->pb, 4, count);
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    asv2_put_bits(&a->pb, 8, (block[0] + 32)>>6);
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    block[0]= 0;
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    for(i=0; i<=count; i++){
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        const int index= scantab[4*i];
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        int ccp=0;
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        if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
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        if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
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        if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
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        if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
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        assert(i || ccp<8);
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        if(i) put_bits(&a->pb, ac_ccp_tab[ccp][1], ac_ccp_tab[ccp][0]);
298
        else  put_bits(&a->pb, dc_ccp_tab[ccp][1], dc_ccp_tab[ccp][0]);
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        if(ccp){
301
            if(ccp&8) asv2_put_level(&a->pb, block[index + 0]);
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            if(ccp&4) asv2_put_level(&a->pb, block[index + 8]);
303
            if(ccp&2) asv2_put_level(&a->pb, block[index + 1]);
304
            if(ccp&1) asv2_put_level(&a->pb, block[index + 9]);
305
        }
306
    }
307
}
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static inline int decode_mb(ASV1Context *a, DCTELEM block[6][64]){
310
    int i;
311
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    a->dsp.clear_blocks(block[0]);
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    if(a->avctx->codec_id == CODEC_ID_ASV1){
315
        for(i=0; i<6; i++){
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            if( asv1_decode_block(a, block[i]) < 0)
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                return -1;
318
        }
319
    }else{
320
        for(i=0; i<6; i++){
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            if( asv2_decode_block(a, block[i]) < 0)
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                return -1;
323
        }
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    }
325
    return 0;
326
}
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static inline int encode_mb(ASV1Context *a, DCTELEM block[6][64]){
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    int i;
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    if(a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb)>>3) < 30*16*16*3/2/8){
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        av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n");
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        return -1;
334
    }
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    if(a->avctx->codec_id == CODEC_ID_ASV1){
337
        for(i=0; i<6; i++)
338
            asv1_encode_block(a, block[i]);
339
    }else{
340
        for(i=0; i<6; i++)
341
            asv2_encode_block(a, block[i]);
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    }
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    return 0;
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}
345 38597364 Wolfgang Hesseler
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static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){
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    DCTELEM (*block)[64]= a->block;
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    int linesize= a->picture.linesize[0];
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    uint8_t *dest_y  = a->picture.data[0] + (mb_y * 16* linesize              ) + mb_x * 16;
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    uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
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    uint8_t *dest_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;
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    a->dsp.idct_put(dest_y                 , linesize, block[0]);
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    a->dsp.idct_put(dest_y              + 8, linesize, block[1]);
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    a->dsp.idct_put(dest_y + 8*linesize    , linesize, block[2]);
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    a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);
358
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    if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
360
        a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]);
361
        a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]);
362
    }
363
}
364
365
static inline void dct_get(ASV1Context *a, int mb_x, int mb_y){
366
    DCTELEM (*block)[64]= a->block;
367
    int linesize= a->picture.linesize[0];
368
    int i;
369 115329f1 Diego Biurrun
370 3d2e8cce Michael Niedermayer
    uint8_t *ptr_y  = a->picture.data[0] + (mb_y * 16* linesize              ) + mb_x * 16;
371
    uint8_t *ptr_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
372
    uint8_t *ptr_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;
373
374
    a->dsp.get_pixels(block[0], ptr_y                 , linesize);
375
    a->dsp.get_pixels(block[1], ptr_y              + 8, linesize);
376
    a->dsp.get_pixels(block[2], ptr_y + 8*linesize    , linesize);
377
    a->dsp.get_pixels(block[3], ptr_y + 8*linesize + 8, linesize);
378
    for(i=0; i<4; i++)
379
        a->dsp.fdct(block[i]);
380 115329f1 Diego Biurrun
381 3d2e8cce Michael Niedermayer
    if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
382
        a->dsp.get_pixels(block[4], ptr_cb, a->picture.linesize[1]);
383
        a->dsp.get_pixels(block[5], ptr_cr, a->picture.linesize[2]);
384
        for(i=4; i<6; i++)
385
            a->dsp.fdct(block[i]);
386
    }
387
}
388
389 115329f1 Diego Biurrun
static int decode_frame(AVCodecContext *avctx,
390 3d2e8cce Michael Niedermayer
                        void *data, int *data_size,
391 7a00bbad Thilo Borgmann
                        AVPacket *avpkt)
392 3d2e8cce Michael Niedermayer
{
393 7a00bbad Thilo Borgmann
    const uint8_t *buf = avpkt->data;
394
    int buf_size = avpkt->size;
395 3d2e8cce Michael Niedermayer
    ASV1Context * const a = avctx->priv_data;
396
    AVFrame *picture = data;
397 91405541 Reimar Döffinger
    AVFrame * const p= &a->picture;
398 3d2e8cce Michael Niedermayer
    int mb_x, mb_y;
399
400
    if(p->data[0])
401
        avctx->release_buffer(avctx, p);
402
403
    p->reference= 0;
404
    if(avctx->get_buffer(avctx, p) < 0){
405 9b879566 Michel Bardiaux
        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
406 3d2e8cce Michael Niedermayer
        return -1;
407
    }
408 ce5e49b0 Stefano Sabatini
    p->pict_type= AV_PICTURE_TYPE_I;
409 3d2e8cce Michael Niedermayer
    p->key_frame= 1;
410
411 238ef6da Reimar Döffinger
    av_fast_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
412
    if (!a->bitstream_buffer)
413
        return AVERROR(ENOMEM);
414 115329f1 Diego Biurrun
415 9b56edf5 Michael Niedermayer
    if(avctx->codec_id == CODEC_ID_ASV1)
416 f64bbca5 Michael Niedermayer
        a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4);
417 9b56edf5 Michael Niedermayer
    else{
418
        int i;
419
        for(i=0; i<buf_size; i++)
420 91cc5d37 Francesco Lavra
            a->bitstream_buffer[i]= av_reverse[ buf[i] ];
421 9b56edf5 Michael Niedermayer
    }
422
423 3d2e8cce Michael Niedermayer
    init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);
424
425
    for(mb_y=0; mb_y<a->mb_height2; mb_y++){
426
        for(mb_x=0; mb_x<a->mb_width2; mb_x++){
427
            if( decode_mb(a, a->block) <0)
428
                return -1;
429 115329f1 Diego Biurrun
430 3d2e8cce Michael Niedermayer
            idct_put(a, mb_x, mb_y);
431
        }
432
    }
433
434
    if(a->mb_width2 != a->mb_width){
435
        mb_x= a->mb_width2;
436
        for(mb_y=0; mb_y<a->mb_height2; mb_y++){
437
            if( decode_mb(a, a->block) <0)
438
                return -1;
439 115329f1 Diego Biurrun
440 3d2e8cce Michael Niedermayer
            idct_put(a, mb_x, mb_y);
441
        }
442
    }
443
444
    if(a->mb_height2 != a->mb_height){
445
        mb_y= a->mb_height2;
446
        for(mb_x=0; mb_x<a->mb_width; mb_x++){
447
            if( decode_mb(a, a->block) <0)
448
                return -1;
449 115329f1 Diego Biurrun
450 3d2e8cce Michael Niedermayer
            idct_put(a, mb_x, mb_y);
451
        }
452
    }
453
454
    *picture= *(AVFrame*)&a->picture;
455
    *data_size = sizeof(AVPicture);
456
457
    emms_c();
458 115329f1 Diego Biurrun
459 3d2e8cce Michael Niedermayer
    return (get_bits_count(&a->gb)+31)/32*4;
460
}
461
462 b250f9c6 Aurelien Jacobs
#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER
463 3d2e8cce Michael Niedermayer
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
464
    ASV1Context * const a = avctx->priv_data;
465
    AVFrame *pict = data;
466 91405541 Reimar Döffinger
    AVFrame * const p= &a->picture;
467 3d2e8cce Michael Niedermayer
    int size;
468
    int mb_x, mb_y;
469
470 ed7debda Alex Beregszaszi
    init_put_bits(&a->pb, buf, buf_size);
471 115329f1 Diego Biurrun
472 3d2e8cce Michael Niedermayer
    *p = *pict;
473 ce5e49b0 Stefano Sabatini
    p->pict_type= AV_PICTURE_TYPE_I;
474 3d2e8cce Michael Niedermayer
    p->key_frame= 1;
475
476
    for(mb_y=0; mb_y<a->mb_height2; mb_y++){
477
        for(mb_x=0; mb_x<a->mb_width2; mb_x++){
478
            dct_get(a, mb_x, mb_y);
479
            encode_mb(a, a->block);
480
        }
481
    }
482
483
    if(a->mb_width2 != a->mb_width){
484
        mb_x= a->mb_width2;
485
        for(mb_y=0; mb_y<a->mb_height2; mb_y++){
486
            dct_get(a, mb_x, mb_y);
487
            encode_mb(a, a->block);
488
        }
489
    }
490
491
    if(a->mb_height2 != a->mb_height){
492
        mb_y= a->mb_height2;
493
        for(mb_x=0; mb_x<a->mb_width; mb_x++){
494
            dct_get(a, mb_x, mb_y);
495
            encode_mb(a, a->block);
496
        }
497
    }
498
    emms_c();
499 115329f1 Diego Biurrun
500 3d2e8cce Michael Niedermayer
    align_put_bits(&a->pb);
501 fe455f33 Alex Beregszaszi
    while(put_bits_count(&a->pb)&31)
502 3d2e8cce Michael Niedermayer
        put_bits(&a->pb, 8, 0);
503 115329f1 Diego Biurrun
504 fe455f33 Alex Beregszaszi
    size= put_bits_count(&a->pb)/32;
505 115329f1 Diego Biurrun
506 1149acdc Michael Niedermayer
    if(avctx->codec_id == CODEC_ID_ASV1)
507
        a->dsp.bswap_buf((uint32_t*)buf, (uint32_t*)buf, size);
508
    else{
509
        int i;
510
        for(i=0; i<4*size; i++)
511 91cc5d37 Francesco Lavra
            buf[i]= av_reverse[ buf[i] ];
512 1149acdc Michael Niedermayer
    }
513 115329f1 Diego Biurrun
514 3d2e8cce Michael Niedermayer
    return size*4;
515
}
516 b250f9c6 Aurelien Jacobs
#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */
517 3d2e8cce Michael Niedermayer
518 98a6fff9 Zuxy Meng
static av_cold void common_init(AVCodecContext *avctx){
519 3d2e8cce Michael Niedermayer
    ASV1Context * const a = avctx->priv_data;
520
521
    dsputil_init(&a->dsp, avctx);
522
523
    a->mb_width   = (avctx->width  + 15) / 16;
524
    a->mb_height  = (avctx->height + 15) / 16;
525
    a->mb_width2  = (avctx->width  + 0) / 16;
526
    a->mb_height2 = (avctx->height + 0) / 16;
527
528 91405541 Reimar Döffinger
    avctx->coded_frame= &a->picture;
529 3d2e8cce Michael Niedermayer
    a->avctx= avctx;
530
}
531
532 98a6fff9 Zuxy Meng
static av_cold int decode_init(AVCodecContext *avctx){
533 3d2e8cce Michael Niedermayer
    ASV1Context * const a = avctx->priv_data;
534 91405541 Reimar Döffinger
    AVFrame *p= &a->picture;
535 3d2e8cce Michael Niedermayer
    int i;
536 1149acdc Michael Niedermayer
    const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2;
537 115329f1 Diego Biurrun
538 3d2e8cce Michael Niedermayer
    common_init(avctx);
539
    init_vlcs(a);
540
    ff_init_scantable(a->dsp.idct_permutation, &a->scantable, scantab);
541 644a9262 Michael Niedermayer
    avctx->pix_fmt= PIX_FMT_YUV420P;
542 3d2e8cce Michael Niedermayer
543 91405541 Reimar Döffinger
    a->inv_qscale= avctx->extradata[0];
544 3d2e8cce Michael Niedermayer
    if(a->inv_qscale == 0){
545 9b879566 Michel Bardiaux
        av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");
546 9b56edf5 Michael Niedermayer
        if(avctx->codec_id == CODEC_ID_ASV1)
547
            a->inv_qscale= 6;
548
        else
549
            a->inv_qscale= 10;
550 3d2e8cce Michael Niedermayer
    }
551
552
    for(i=0; i<64; i++){
553
        int index= scantab[i];
554 9b56edf5 Michael Niedermayer
555 1149acdc Michael Niedermayer
        a->intra_matrix[i]= 64*scale*ff_mpeg1_default_intra_matrix[index] / a->inv_qscale;
556 3d2e8cce Michael Niedermayer
    }
557
558
    p->qstride= a->mb_width;
559 f41c1fac Kurosu
    p->qscale_table= av_malloc( p->qstride * a->mb_height);
560 1149acdc Michael Niedermayer
    p->quality= (32*scale + a->inv_qscale/2)/a->inv_qscale;
561
    memset(p->qscale_table, p->quality, p->qstride*a->mb_height);
562 3d2e8cce Michael Niedermayer
563
    return 0;
564
}
565
566 b250f9c6 Aurelien Jacobs
#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER
567 98a6fff9 Zuxy Meng
static av_cold int encode_init(AVCodecContext *avctx){
568 3d2e8cce Michael Niedermayer
    ASV1Context * const a = avctx->priv_data;
569
    int i;
570 1149acdc Michael Niedermayer
    const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2;
571
572 3d2e8cce Michael Niedermayer
    common_init(avctx);
573 115329f1 Diego Biurrun
574 3d2e8cce Michael Niedermayer
    if(avctx->global_quality == 0) avctx->global_quality= 4*FF_QUALITY_SCALE;
575
576 1149acdc Michael Niedermayer
    a->inv_qscale= (32*scale*FF_QUALITY_SCALE +  avctx->global_quality/2) / avctx->global_quality;
577 115329f1 Diego Biurrun
578 3d2e8cce Michael Niedermayer
    avctx->extradata= av_mallocz(8);
579
    avctx->extradata_size=8;
580 8fc0162a Måns Rullgård
    ((uint32_t*)avctx->extradata)[0]= av_le2ne32(a->inv_qscale);
581
    ((uint32_t*)avctx->extradata)[1]= av_le2ne32(AV_RL32("ASUS"));
582 115329f1 Diego Biurrun
583 3d2e8cce Michael Niedermayer
    for(i=0; i<64; i++){
584 1149acdc Michael Niedermayer
        int q= 32*scale*ff_mpeg1_default_intra_matrix[i];
585 3d2e8cce Michael Niedermayer
        a->q_intra_matrix[i]= ((a->inv_qscale<<16) + q/2) / q;
586
    }
587
588
    return 0;
589
}
590 b250f9c6 Aurelien Jacobs
#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */
591 3d2e8cce Michael Niedermayer
592 98a6fff9 Zuxy Meng
static av_cold int decode_end(AVCodecContext *avctx){
593 3d2e8cce Michael Niedermayer
    ASV1Context * const a = avctx->priv_data;
594
595
    av_freep(&a->bitstream_buffer);
596
    av_freep(&a->picture.qscale_table);
597
    a->bitstream_buffer_size=0;
598 115329f1 Diego Biurrun
599 77edf866 Reimar Döffinger
    if(a->picture.data[0])
600
        avctx->release_buffer(avctx, &a->picture);
601
602 3d2e8cce Michael Niedermayer
    return 0;
603
}
604
605 e7e2df27 Diego Elio Pettenò
AVCodec ff_asv1_decoder = {
606 3d2e8cce Michael Niedermayer
    "asv1",
607 72415b2a Stefano Sabatini
    AVMEDIA_TYPE_VIDEO,
608 3d2e8cce Michael Niedermayer
    CODEC_ID_ASV1,
609
    sizeof(ASV1Context),
610
    decode_init,
611
    NULL,
612
    decode_end,
613
    decode_frame,
614
    CODEC_CAP_DR1,
615 fe4bf374 Stefano Sabatini
    .long_name= NULL_IF_CONFIG_SMALL("ASUS V1"),
616 3d2e8cce Michael Niedermayer
};
617
618 e7e2df27 Diego Elio Pettenò
AVCodec ff_asv2_decoder = {
619 9b56edf5 Michael Niedermayer
    "asv2",
620 72415b2a Stefano Sabatini
    AVMEDIA_TYPE_VIDEO,
621 9b56edf5 Michael Niedermayer
    CODEC_ID_ASV2,
622
    sizeof(ASV1Context),
623
    decode_init,
624
    NULL,
625
    decode_end,
626
    decode_frame,
627
    CODEC_CAP_DR1,
628 fe4bf374 Stefano Sabatini
    .long_name= NULL_IF_CONFIG_SMALL("ASUS V2"),
629 9b56edf5 Michael Niedermayer
};
630
631 b250f9c6 Aurelien Jacobs
#if CONFIG_ASV1_ENCODER
632 e7e2df27 Diego Elio Pettenò
AVCodec ff_asv1_encoder = {
633 3d2e8cce Michael Niedermayer
    "asv1",
634 72415b2a Stefano Sabatini
    AVMEDIA_TYPE_VIDEO,
635 3d2e8cce Michael Niedermayer
    CODEC_ID_ASV1,
636
    sizeof(ASV1Context),
637
    encode_init,
638
    encode_frame,
639
    //encode_end,
640 2ba83017 Reimar Döffinger
    .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
641 fe4bf374 Stefano Sabatini
    .long_name= NULL_IF_CONFIG_SMALL("ASUS V1"),
642 3d2e8cce Michael Niedermayer
};
643 f544a5fc Diego Biurrun
#endif
644 38597364 Wolfgang Hesseler
645 b250f9c6 Aurelien Jacobs
#if CONFIG_ASV2_ENCODER
646 e7e2df27 Diego Elio Pettenò
AVCodec ff_asv2_encoder = {
647 1149acdc Michael Niedermayer
    "asv2",
648 72415b2a Stefano Sabatini
    AVMEDIA_TYPE_VIDEO,
649 1149acdc Michael Niedermayer
    CODEC_ID_ASV2,
650
    sizeof(ASV1Context),
651
    encode_init,
652
    encode_frame,
653
    //encode_end,
654 2ba83017 Reimar Döffinger
    .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
655 fe4bf374 Stefano Sabatini
    .long_name= NULL_IF_CONFIG_SMALL("ASUS V2"),
656 1149acdc Michael Niedermayer
};
657 f544a5fc Diego Biurrun
#endif