1532 lines
54 KiB
C
1532 lines
54 KiB
C
/*
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* RV30/40 decoder common data
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* Copyright (c) 2007 Mike Melanson, Konstantin Shishkov
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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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* RV30/40 decoder common data
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*/
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#include "avcodec.h"
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#include "dsputil.h"
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#include "mpegvideo.h"
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#include "golomb.h"
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#include "mathops.h"
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#include "rectangle.h"
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#include "rv34vlc.h"
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#include "rv34data.h"
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#include "rv34.h"
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//#define DEBUG
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static inline void ZERO8x2(void* dst, int stride)
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{
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fill_rectangle(dst, 1, 2, stride, 0, 4);
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fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4);
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}
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/** translation of RV30/40 macroblock types to lavc ones */
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static const int rv34_mb_type_to_lavc[12] = {
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MB_TYPE_INTRA,
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MB_TYPE_INTRA16x16 | MB_TYPE_SEPARATE_DC,
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MB_TYPE_16x16 | MB_TYPE_L0,
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MB_TYPE_8x8 | MB_TYPE_L0,
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MB_TYPE_16x16 | MB_TYPE_L0,
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MB_TYPE_16x16 | MB_TYPE_L1,
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MB_TYPE_SKIP,
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MB_TYPE_DIRECT2 | MB_TYPE_16x16,
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MB_TYPE_16x8 | MB_TYPE_L0,
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MB_TYPE_8x16 | MB_TYPE_L0,
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MB_TYPE_16x16 | MB_TYPE_L0L1,
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MB_TYPE_16x16 | MB_TYPE_L0 | MB_TYPE_SEPARATE_DC
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};
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static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES];
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/**
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* @defgroup vlc RV30/40 VLC generating functions
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* @{
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*/
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static const int table_offs[] = {
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0, 1818, 3622, 4144, 4698, 5234, 5804, 5868, 5900, 5932,
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5996, 6252, 6316, 6348, 6380, 7674, 8944, 10274, 11668, 12250,
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14060, 15846, 16372, 16962, 17512, 18148, 18180, 18212, 18244, 18308,
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18564, 18628, 18660, 18692, 20036, 21314, 22648, 23968, 24614, 26384,
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28190, 28736, 29366, 29938, 30608, 30640, 30672, 30704, 30768, 31024,
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31088, 31120, 31184, 32570, 33898, 35236, 36644, 37286, 39020, 40802,
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41368, 42052, 42692, 43348, 43380, 43412, 43444, 43476, 43604, 43668,
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43700, 43732, 45100, 46430, 47778, 49160, 49802, 51550, 53340, 53972,
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54648, 55348, 55994, 56122, 56154, 56186, 56218, 56346, 56410, 56442,
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56474, 57878, 59290, 60636, 62036, 62682, 64460, 64524, 64588, 64716,
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64844, 66076, 67466, 67978, 68542, 69064, 69648, 70296, 72010, 72074,
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72138, 72202, 72330, 73572, 74936, 75454, 76030, 76566, 77176, 77822,
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79582, 79646, 79678, 79742, 79870, 81180, 82536, 83064, 83672, 84242,
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84934, 85576, 87384, 87448, 87480, 87544, 87672, 88982, 90340, 90902,
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91598, 92182, 92846, 93488, 95246, 95278, 95310, 95374, 95502, 96878,
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98266, 98848, 99542, 100234, 100884, 101524, 103320, 103352, 103384, 103416,
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103480, 104874, 106222, 106910, 107584, 108258, 108902, 109544, 111366, 111398,
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111430, 111462, 111494, 112878, 114320, 114988, 115660, 116310, 116950, 117592
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};
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static VLC_TYPE table_data[117592][2];
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/**
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* Generate VLC from codeword lengths.
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* @param bits codeword lengths (zeroes are accepted)
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* @param size length of input data
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* @param vlc output VLC
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* @param insyms symbols for input codes (NULL for default ones)
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* @param num VLC table number (for static initialization)
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*/
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static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *insyms,
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const int num)
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{
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int i;
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int counts[17] = {0}, codes[17];
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uint16_t cw[MAX_VLC_SIZE], syms[MAX_VLC_SIZE];
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uint8_t bits2[MAX_VLC_SIZE];
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int maxbits = 0, realsize = 0;
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for(i = 0; i < size; i++){
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if(bits[i]){
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bits2[realsize] = bits[i];
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syms[realsize] = insyms ? insyms[i] : i;
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realsize++;
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maxbits = FFMAX(maxbits, bits[i]);
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counts[bits[i]]++;
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}
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}
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codes[0] = 0;
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for(i = 0; i < 16; i++)
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codes[i+1] = (codes[i] + counts[i]) << 1;
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for(i = 0; i < realsize; i++)
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cw[i] = codes[bits2[i]]++;
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vlc->table = &table_data[table_offs[num]];
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vlc->table_allocated = table_offs[num + 1] - table_offs[num];
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init_vlc_sparse(vlc, FFMIN(maxbits, 9), realsize,
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bits2, 1, 1,
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cw, 2, 2,
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syms, 2, 2, INIT_VLC_USE_NEW_STATIC);
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}
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/**
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* Initialize all tables.
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*/
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static av_cold void rv34_init_tables(void)
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{
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int i, j, k;
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for(i = 0; i < NUM_INTRA_TABLES; i++){
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for(j = 0; j < 2; j++){
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rv34_gen_vlc(rv34_table_intra_cbppat [i][j], CBPPAT_VLC_SIZE, &intra_vlcs[i].cbppattern[j], NULL, 19*i + 0 + j);
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rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].second_pattern[j], NULL, 19*i + 2 + j);
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rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].third_pattern[j], NULL, 19*i + 4 + j);
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for(k = 0; k < 4; k++){
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rv34_gen_vlc(rv34_table_intra_cbp[i][j+k*2], CBP_VLC_SIZE, &intra_vlcs[i].cbp[j][k], rv34_cbp_code, 19*i + 6 + j*4 + k);
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}
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}
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for(j = 0; j < 4; j++){
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rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE, &intra_vlcs[i].first_pattern[j], NULL, 19*i + 14 + j);
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}
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rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE, &intra_vlcs[i].coefficient, NULL, 19*i + 18);
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}
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for(i = 0; i < NUM_INTER_TABLES; i++){
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rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE, &inter_vlcs[i].cbppattern[0], NULL, i*12 + 95);
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for(j = 0; j < 4; j++){
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rv34_gen_vlc(rv34_inter_cbp[i][j], CBP_VLC_SIZE, &inter_vlcs[i].cbp[0][j], rv34_cbp_code, i*12 + 96 + j);
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}
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for(j = 0; j < 2; j++){
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rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE, &inter_vlcs[i].first_pattern[j], NULL, i*12 + 100 + j);
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rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].second_pattern[j], NULL, i*12 + 102 + j);
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rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].third_pattern[j], NULL, i*12 + 104 + j);
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}
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rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE, &inter_vlcs[i].coefficient, NULL, i*12 + 106);
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}
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}
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/** @} */ // vlc group
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/**
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* @defgroup transform RV30/40 inverse transform functions
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* @{
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*/
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static av_always_inline void rv34_row_transform(int temp[16], DCTELEM *block)
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{
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int i;
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for(i=0; i<4; i++){
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const int z0= 13*(block[i+8*0] + block[i+8*2]);
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const int z1= 13*(block[i+8*0] - block[i+8*2]);
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const int z2= 7* block[i+8*1] - 17*block[i+8*3];
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const int z3= 17* block[i+8*1] + 7*block[i+8*3];
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temp[4*i+0]= z0+z3;
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temp[4*i+1]= z1+z2;
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temp[4*i+2]= z1-z2;
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temp[4*i+3]= z0-z3;
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}
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}
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/**
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* Real Video 3.0/4.0 inverse transform
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* Code is almost the same as in SVQ3, only scaling is different.
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*/
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static void rv34_inv_transform(DCTELEM *block){
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int temp[16];
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int i;
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rv34_row_transform(temp, block);
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for(i=0; i<4; i++){
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const int z0= 13*(temp[4*0+i] + temp[4*2+i]) + 0x200;
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const int z1= 13*(temp[4*0+i] - temp[4*2+i]) + 0x200;
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const int z2= 7* temp[4*1+i] - 17*temp[4*3+i];
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const int z3= 17* temp[4*1+i] + 7*temp[4*3+i];
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block[i*8+0]= (z0 + z3)>>10;
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block[i*8+1]= (z1 + z2)>>10;
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block[i*8+2]= (z1 - z2)>>10;
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block[i*8+3]= (z0 - z3)>>10;
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}
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}
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/**
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* RealVideo 3.0/4.0 inverse transform for DC block
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*
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* Code is almost the same as rv34_inv_transform()
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* but final coefficients are multiplied by 1.5 and have no rounding.
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*/
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static void rv34_inv_transform_noround(DCTELEM *block){
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int temp[16];
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int i;
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rv34_row_transform(temp, block);
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for(i=0; i<4; i++){
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const int z0= 13*(temp[4*0+i] + temp[4*2+i]);
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const int z1= 13*(temp[4*0+i] - temp[4*2+i]);
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const int z2= 7* temp[4*1+i] - 17*temp[4*3+i];
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const int z3= 17* temp[4*1+i] + 7*temp[4*3+i];
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block[i*8+0]= ((z0 + z3)*3)>>11;
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block[i*8+1]= ((z1 + z2)*3)>>11;
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block[i*8+2]= ((z1 - z2)*3)>>11;
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block[i*8+3]= ((z0 - z3)*3)>>11;
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}
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}
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/** @} */ // transform
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/**
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* @defgroup block RV30/40 4x4 block decoding functions
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* @{
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*/
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/**
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* Decode coded block pattern.
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*/
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static int rv34_decode_cbp(GetBitContext *gb, RV34VLC *vlc, int table)
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{
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int pattern, code, cbp=0;
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int ones;
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static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000};
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static const int shifts[4] = { 0, 2, 8, 10 };
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const int *curshift = shifts;
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int i, t, mask;
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code = get_vlc2(gb, vlc->cbppattern[table].table, 9, 2);
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pattern = code & 0xF;
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code >>= 4;
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ones = rv34_count_ones[pattern];
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for(mask = 8; mask; mask >>= 1, curshift++){
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if(pattern & mask)
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cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0];
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}
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for(i = 0; i < 4; i++){
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t = modulo_three_table[code][i];
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if(t == 1)
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cbp |= cbp_masks[get_bits1(gb)] << i;
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if(t == 2)
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cbp |= cbp_masks[2] << i;
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}
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return cbp;
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}
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/**
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* Get one coefficient value from the bistream and store it.
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*/
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static inline void decode_coeff(DCTELEM *dst, int coef, int esc, GetBitContext *gb, VLC* vlc)
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{
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if(coef){
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if(coef == esc){
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coef = get_vlc2(gb, vlc->table, 9, 2);
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if(coef > 23){
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coef -= 23;
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coef = 22 + ((1 << coef) | get_bits(gb, coef));
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}
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coef += esc;
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}
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if(get_bits1(gb))
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coef = -coef;
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*dst = coef;
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}
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}
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/**
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* Decode 2x2 subblock of coefficients.
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*/
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static inline void decode_subblock(DCTELEM *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc)
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{
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int coeffs[4];
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coeffs[0] = modulo_three_table[code][0];
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coeffs[1] = modulo_three_table[code][1];
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coeffs[2] = modulo_three_table[code][2];
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coeffs[3] = modulo_three_table[code][3];
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decode_coeff(dst , coeffs[0], 3, gb, vlc);
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if(is_block2){
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decode_coeff(dst+8, coeffs[1], 2, gb, vlc);
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decode_coeff(dst+1, coeffs[2], 2, gb, vlc);
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}else{
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decode_coeff(dst+1, coeffs[1], 2, gb, vlc);
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decode_coeff(dst+8, coeffs[2], 2, gb, vlc);
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}
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decode_coeff(dst+9, coeffs[3], 2, gb, vlc);
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}
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/**
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* Decode coefficients for 4x4 block.
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*
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* This is done by filling 2x2 subblocks with decoded coefficients
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* in this order (the same for subblocks and subblock coefficients):
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* o--o
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* /
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* /
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* o--o
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*/
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static inline void rv34_decode_block(DCTELEM *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc)
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{
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int code, pattern;
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code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2);
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pattern = code & 0x7;
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code >>= 3;
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decode_subblock(dst, code, 0, gb, &rvlc->coefficient);
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if(pattern & 4){
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code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
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decode_subblock(dst + 2, code, 0, gb, &rvlc->coefficient);
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}
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if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block
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code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
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decode_subblock(dst + 8*2, code, 1, gb, &rvlc->coefficient);
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}
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if(pattern & 1){
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code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2);
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decode_subblock(dst + 8*2+2, code, 0, gb, &rvlc->coefficient);
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}
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}
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/**
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* Dequantize ordinary 4x4 block.
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* @todo optimize
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*/
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static inline void rv34_dequant4x4(DCTELEM *block, int Qdc, int Q)
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{
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int i, j;
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block[0] = (block[0] * Qdc + 8) >> 4;
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for(i = 0; i < 4; i++)
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for(j = !i; j < 4; j++)
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block[j + i*8] = (block[j + i*8] * Q + 8) >> 4;
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}
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/**
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* Dequantize 4x4 block of DC values for 16x16 macroblock.
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* @todo optimize
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*/
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static inline void rv34_dequant4x4_16x16(DCTELEM *block, int Qdc, int Q)
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{
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int i;
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for(i = 0; i < 3; i++)
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block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Qdc + 8) >> 4;
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for(; i < 16; i++)
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block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Q + 8) >> 4;
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}
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/** @} */ //block functions
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/**
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* @defgroup bitstream RV30/40 bitstream parsing
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* @{
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*/
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/**
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* Decode starting slice position.
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* @todo Maybe replace with ff_h263_decode_mba() ?
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*/
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int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)
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{
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int i;
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for(i = 0; i < 5; i++)
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if(rv34_mb_max_sizes[i] >= mb_size - 1)
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break;
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return rv34_mb_bits_sizes[i];
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}
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/**
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* Select VLC set for decoding from current quantizer, modifier and frame type.
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*/
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static inline RV34VLC* choose_vlc_set(int quant, int mod, int type)
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{
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if(mod == 2 && quant < 19) quant += 10;
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else if(mod && quant < 26) quant += 5;
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return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][av_clip(quant, 0, 30)]]
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: &intra_vlcs[rv34_quant_to_vlc_set[0][av_clip(quant, 0, 30)]];
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}
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/**
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* Decode quantizer difference and return modified quantizer.
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*/
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static inline int rv34_decode_dquant(GetBitContext *gb, int quant)
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{
|
|
if(get_bits1(gb))
|
|
return rv34_dquant_tab[get_bits1(gb)][quant];
|
|
else
|
|
return get_bits(gb, 5);
|
|
}
|
|
|
|
/** @} */ //bitstream functions
|
|
|
|
/**
|
|
* @defgroup mv motion vector related code (prediction, reconstruction, motion compensation)
|
|
* @{
|
|
*/
|
|
|
|
/** macroblock partition width in 8x8 blocks */
|
|
static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 };
|
|
|
|
/** macroblock partition height in 8x8 blocks */
|
|
static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 };
|
|
|
|
/** availability index for subblocks */
|
|
static const uint8_t avail_indexes[4] = { 6, 7, 10, 11 };
|
|
|
|
/**
|
|
* motion vector prediction
|
|
*
|
|
* Motion prediction performed for the block by using median prediction of
|
|
* motion vectors from the left, top and right top blocks but in corner cases
|
|
* some other vectors may be used instead.
|
|
*/
|
|
static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
|
|
int A[2] = {0}, B[2], C[2];
|
|
int i, j;
|
|
int mx, my;
|
|
int avail_index = avail_indexes[subblock_no];
|
|
int c_off = part_sizes_w[block_type];
|
|
|
|
mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride;
|
|
if(subblock_no == 3)
|
|
c_off = -1;
|
|
|
|
if(r->avail_cache[avail_index - 1]){
|
|
A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0];
|
|
A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1];
|
|
}
|
|
if(r->avail_cache[avail_index - 4]){
|
|
B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0];
|
|
B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1];
|
|
}else{
|
|
B[0] = A[0];
|
|
B[1] = A[1];
|
|
}
|
|
if(!r->avail_cache[avail_index - 4 + c_off]){
|
|
if(r->avail_cache[avail_index - 4] && (r->avail_cache[avail_index - 1] || r->rv30)){
|
|
C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0];
|
|
C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1];
|
|
}else{
|
|
C[0] = A[0];
|
|
C[1] = A[1];
|
|
}
|
|
}else{
|
|
C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][0];
|
|
C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][1];
|
|
}
|
|
mx = mid_pred(A[0], B[0], C[0]);
|
|
my = mid_pred(A[1], B[1], C[1]);
|
|
mx += r->dmv[dmv_no][0];
|
|
my += r->dmv[dmv_no][1];
|
|
for(j = 0; j < part_sizes_h[block_type]; j++){
|
|
for(i = 0; i < part_sizes_w[block_type]; i++){
|
|
s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx;
|
|
s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define GET_PTS_DIFF(a, b) ((a - b + 8192) & 0x1FFF)
|
|
|
|
/**
|
|
* Calculate motion vector component that should be added for direct blocks.
|
|
*/
|
|
static int calc_add_mv(RV34DecContext *r, int dir, int val)
|
|
{
|
|
int refdist = GET_PTS_DIFF(r->next_pts, r->last_pts);
|
|
int dist = dir ? -GET_PTS_DIFF(r->next_pts, r->cur_pts) : GET_PTS_DIFF(r->cur_pts, r->last_pts);
|
|
int mul;
|
|
|
|
if(!refdist) return 0;
|
|
mul = (dist << 14) / refdist;
|
|
return (val * mul + 0x2000) >> 14;
|
|
}
|
|
|
|
/**
|
|
* Predict motion vector for B-frame macroblock.
|
|
*/
|
|
static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2],
|
|
int A_avail, int B_avail, int C_avail,
|
|
int *mx, int *my)
|
|
{
|
|
if(A_avail + B_avail + C_avail != 3){
|
|
*mx = A[0] + B[0] + C[0];
|
|
*my = A[1] + B[1] + C[1];
|
|
if(A_avail + B_avail + C_avail == 2){
|
|
*mx /= 2;
|
|
*my /= 2;
|
|
}
|
|
}else{
|
|
*mx = mid_pred(A[0], B[0], C[0]);
|
|
*my = mid_pred(A[1], B[1], C[1]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* motion vector prediction for B-frames
|
|
*/
|
|
static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
|
|
int A[2], B[2], C[2];
|
|
int has_A = 0, has_B = 0, has_C = 0;
|
|
int mx, my;
|
|
int i, j;
|
|
Picture *cur_pic = s->current_picture_ptr;
|
|
const int mask = dir ? MB_TYPE_L1 : MB_TYPE_L0;
|
|
int type = cur_pic->mb_type[mb_pos];
|
|
|
|
memset(A, 0, sizeof(A));
|
|
memset(B, 0, sizeof(B));
|
|
memset(C, 0, sizeof(C));
|
|
if((r->avail_cache[6-1] & type) & mask){
|
|
A[0] = cur_pic->motion_val[dir][mv_pos - 1][0];
|
|
A[1] = cur_pic->motion_val[dir][mv_pos - 1][1];
|
|
has_A = 1;
|
|
}
|
|
if((r->avail_cache[6-4] & type) & mask){
|
|
B[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][0];
|
|
B[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][1];
|
|
has_B = 1;
|
|
}
|
|
if(r->avail_cache[6-4] && (r->avail_cache[6-2] & type) & mask){
|
|
C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][0];
|
|
C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][1];
|
|
has_C = 1;
|
|
}else if((s->mb_x+1) == s->mb_width && (r->avail_cache[6-5] & type) & mask){
|
|
C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][0];
|
|
C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][1];
|
|
has_C = 1;
|
|
}
|
|
|
|
rv34_pred_b_vector(A, B, C, has_A, has_B, has_C, &mx, &my);
|
|
|
|
mx += r->dmv[dir][0];
|
|
my += r->dmv[dir][1];
|
|
|
|
for(j = 0; j < 2; j++){
|
|
for(i = 0; i < 2; i++){
|
|
cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][0] = mx;
|
|
cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my;
|
|
}
|
|
}
|
|
if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD){
|
|
ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* motion vector prediction - RV3 version
|
|
*/
|
|
static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
|
|
int A[2] = {0}, B[2], C[2];
|
|
int i, j, k;
|
|
int mx, my;
|
|
int avail_index = avail_indexes[0];
|
|
|
|
if(r->avail_cache[avail_index - 1]){
|
|
A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0];
|
|
A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1];
|
|
}
|
|
if(r->avail_cache[avail_index - 4]){
|
|
B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0];
|
|
B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1];
|
|
}else{
|
|
B[0] = A[0];
|
|
B[1] = A[1];
|
|
}
|
|
if(!r->avail_cache[avail_index - 4 + 2]){
|
|
if(r->avail_cache[avail_index - 4] && (r->avail_cache[avail_index - 1])){
|
|
C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0];
|
|
C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1];
|
|
}else{
|
|
C[0] = A[0];
|
|
C[1] = A[1];
|
|
}
|
|
}else{
|
|
C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+2][0];
|
|
C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+2][1];
|
|
}
|
|
mx = mid_pred(A[0], B[0], C[0]);
|
|
my = mid_pred(A[1], B[1], C[1]);
|
|
mx += r->dmv[0][0];
|
|
my += r->dmv[0][1];
|
|
for(j = 0; j < 2; j++){
|
|
for(i = 0; i < 2; i++){
|
|
for(k = 0; k < 2; k++){
|
|
s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx;
|
|
s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][1] = my;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static const int chroma_coeffs[3] = { 0, 3, 5 };
|
|
|
|
/**
|
|
* generic motion compensation function
|
|
*
|
|
* @param r decoder context
|
|
* @param block_type type of the current block
|
|
* @param xoff horizontal offset from the start of the current block
|
|
* @param yoff vertical offset from the start of the current block
|
|
* @param mv_off offset to the motion vector information
|
|
* @param width width of the current partition in 8x8 blocks
|
|
* @param height height of the current partition in 8x8 blocks
|
|
* @param dir motion compensation direction (i.e. from the last or the next reference frame)
|
|
* @param thirdpel motion vectors are specified in 1/3 of pixel
|
|
* @param qpel_mc a set of functions used to perform luma motion compensation
|
|
* @param chroma_mc a set of functions used to perform chroma motion compensation
|
|
*/
|
|
static inline void rv34_mc(RV34DecContext *r, const int block_type,
|
|
const int xoff, const int yoff, int mv_off,
|
|
const int width, const int height, int dir,
|
|
const int thirdpel,
|
|
qpel_mc_func (*qpel_mc)[16],
|
|
h264_chroma_mc_func (*chroma_mc))
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
uint8_t *Y, *U, *V, *srcY, *srcU, *srcV;
|
|
int dxy, mx, my, umx, umy, lx, ly, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
|
|
int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride + mv_off;
|
|
int is16x16 = 1;
|
|
|
|
if(thirdpel){
|
|
int chroma_mx, chroma_my;
|
|
mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) / 3 - (1 << 24);
|
|
my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) / 3 - (1 << 24);
|
|
lx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) % 3;
|
|
ly = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) % 3;
|
|
chroma_mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + 1) >> 1;
|
|
chroma_my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + 1) >> 1;
|
|
umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24);
|
|
umy = (chroma_my + (3 << 24)) / 3 - (1 << 24);
|
|
uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3];
|
|
uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3];
|
|
}else{
|
|
int cx, cy;
|
|
mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] >> 2;
|
|
my = s->current_picture_ptr->motion_val[dir][mv_pos][1] >> 2;
|
|
lx = s->current_picture_ptr->motion_val[dir][mv_pos][0] & 3;
|
|
ly = s->current_picture_ptr->motion_val[dir][mv_pos][1] & 3;
|
|
cx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2;
|
|
cy = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2;
|
|
umx = cx >> 2;
|
|
umy = cy >> 2;
|
|
uvmx = (cx & 3) << 1;
|
|
uvmy = (cy & 3) << 1;
|
|
//due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3
|
|
if(uvmx == 6 && uvmy == 6)
|
|
uvmx = uvmy = 4;
|
|
}
|
|
dxy = ly*4 + lx;
|
|
srcY = dir ? s->next_picture_ptr->data[0] : s->last_picture_ptr->data[0];
|
|
srcU = dir ? s->next_picture_ptr->data[1] : s->last_picture_ptr->data[1];
|
|
srcV = dir ? s->next_picture_ptr->data[2] : s->last_picture_ptr->data[2];
|
|
src_x = s->mb_x * 16 + xoff + mx;
|
|
src_y = s->mb_y * 16 + yoff + my;
|
|
uvsrc_x = s->mb_x * 8 + (xoff >> 1) + umx;
|
|
uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy;
|
|
srcY += src_y * s->linesize + src_x;
|
|
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
if( (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4
|
|
|| (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4){
|
|
uint8_t *uvbuf= s->edge_emu_buffer + 22 * s->linesize;
|
|
|
|
srcY -= 2 + 2*s->linesize;
|
|
ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, (width<<3)+6, (height<<3)+6,
|
|
src_x - 2, src_y - 2, s->h_edge_pos, s->v_edge_pos);
|
|
srcY = s->edge_emu_buffer + 2 + 2*s->linesize;
|
|
ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, (width<<2)+1, (height<<2)+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, (width<<2)+1, (height<<2)+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
srcU = uvbuf;
|
|
srcV = uvbuf + 16;
|
|
}
|
|
Y = s->dest[0] + xoff + yoff *s->linesize;
|
|
U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
|
|
V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
|
|
|
|
if(block_type == RV34_MB_P_16x8){
|
|
qpel_mc[1][dxy](Y, srcY, s->linesize);
|
|
Y += 8;
|
|
srcY += 8;
|
|
}else if(block_type == RV34_MB_P_8x16){
|
|
qpel_mc[1][dxy](Y, srcY, s->linesize);
|
|
Y += 8 * s->linesize;
|
|
srcY += 8 * s->linesize;
|
|
}
|
|
is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16);
|
|
qpel_mc[!is16x16][dxy](Y, srcY, s->linesize);
|
|
chroma_mc[2-width] (U, srcU, s->uvlinesize, height*4, uvmx, uvmy);
|
|
chroma_mc[2-width] (V, srcV, s->uvlinesize, height*4, uvmx, uvmy);
|
|
}
|
|
|
|
static void rv34_mc_1mv(RV34DecContext *r, const int block_type,
|
|
const int xoff, const int yoff, int mv_off,
|
|
const int width, const int height, int dir)
|
|
{
|
|
rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30,
|
|
r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab
|
|
: r->s.dsp.put_rv40_qpel_pixels_tab,
|
|
r->rv30 ? r->s.dsp.put_h264_chroma_pixels_tab
|
|
: r->s.dsp.put_rv40_chroma_pixels_tab);
|
|
}
|
|
|
|
static void rv34_mc_2mv(RV34DecContext *r, const int block_type)
|
|
{
|
|
rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30,
|
|
r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab
|
|
: r->s.dsp.put_rv40_qpel_pixels_tab,
|
|
r->rv30 ? r->s.dsp.put_h264_chroma_pixels_tab
|
|
: r->s.dsp.put_rv40_chroma_pixels_tab);
|
|
rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30,
|
|
r->rv30 ? r->s.dsp.avg_rv30_tpel_pixels_tab
|
|
: r->s.dsp.avg_rv40_qpel_pixels_tab,
|
|
r->rv30 ? r->s.dsp.avg_h264_chroma_pixels_tab
|
|
: r->s.dsp.avg_rv40_chroma_pixels_tab);
|
|
}
|
|
|
|
static void rv34_mc_2mv_skip(RV34DecContext *r)
|
|
{
|
|
int i, j;
|
|
for(j = 0; j < 2; j++)
|
|
for(i = 0; i < 2; i++){
|
|
rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30,
|
|
r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab
|
|
: r->s.dsp.put_rv40_qpel_pixels_tab,
|
|
r->rv30 ? r->s.dsp.put_h264_chroma_pixels_tab
|
|
: r->s.dsp.put_rv40_chroma_pixels_tab);
|
|
rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 1, r->rv30,
|
|
r->rv30 ? r->s.dsp.avg_rv30_tpel_pixels_tab
|
|
: r->s.dsp.avg_rv40_qpel_pixels_tab,
|
|
r->rv30 ? r->s.dsp.avg_h264_chroma_pixels_tab
|
|
: r->s.dsp.avg_rv40_chroma_pixels_tab);
|
|
}
|
|
}
|
|
|
|
/** number of motion vectors in each macroblock type */
|
|
static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 };
|
|
|
|
/**
|
|
* Decode motion vector differences
|
|
* and perform motion vector reconstruction and motion compensation.
|
|
*/
|
|
static int rv34_decode_mv(RV34DecContext *r, int block_type)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j, k, l;
|
|
int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
|
|
int next_bt;
|
|
|
|
memset(r->dmv, 0, sizeof(r->dmv));
|
|
for(i = 0; i < num_mvs[block_type]; i++){
|
|
r->dmv[i][0] = svq3_get_se_golomb(gb);
|
|
r->dmv[i][1] = svq3_get_se_golomb(gb);
|
|
}
|
|
switch(block_type){
|
|
case RV34_MB_TYPE_INTRA:
|
|
case RV34_MB_TYPE_INTRA16x16:
|
|
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
|
|
return 0;
|
|
case RV34_MB_SKIP:
|
|
if(s->pict_type == FF_P_TYPE){
|
|
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
|
|
rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
|
|
break;
|
|
}
|
|
case RV34_MB_B_DIRECT:
|
|
//surprisingly, it uses motion scheme from next reference frame
|
|
next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride];
|
|
if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){
|
|
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
|
|
ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
|
|
}else
|
|
for(j = 0; j < 2; j++)
|
|
for(i = 0; i < 2; i++)
|
|
for(k = 0; k < 2; k++)
|
|
for(l = 0; l < 2; l++)
|
|
s->current_picture_ptr->motion_val[l][mv_pos + i + j*s->b8_stride][k] = calc_add_mv(r, l, s->next_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][k]);
|
|
if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC
|
|
rv34_mc_2mv(r, block_type);
|
|
else
|
|
rv34_mc_2mv_skip(r);
|
|
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
|
|
break;
|
|
case RV34_MB_P_16x16:
|
|
case RV34_MB_P_MIX16x16:
|
|
rv34_pred_mv(r, block_type, 0, 0);
|
|
rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
|
|
break;
|
|
case RV34_MB_B_FORWARD:
|
|
case RV34_MB_B_BACKWARD:
|
|
r->dmv[1][0] = r->dmv[0][0];
|
|
r->dmv[1][1] = r->dmv[0][1];
|
|
if(r->rv30)
|
|
rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD);
|
|
else
|
|
rv34_pred_mv_b (r, block_type, block_type == RV34_MB_B_BACKWARD);
|
|
rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD);
|
|
break;
|
|
case RV34_MB_P_16x8:
|
|
case RV34_MB_P_8x16:
|
|
rv34_pred_mv(r, block_type, 0, 0);
|
|
rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1);
|
|
if(block_type == RV34_MB_P_16x8){
|
|
rv34_mc_1mv(r, block_type, 0, 0, 0, 2, 1, 0);
|
|
rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0);
|
|
}
|
|
if(block_type == RV34_MB_P_8x16){
|
|
rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0);
|
|
rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0);
|
|
}
|
|
break;
|
|
case RV34_MB_B_BIDIR:
|
|
rv34_pred_mv_b (r, block_type, 0);
|
|
rv34_pred_mv_b (r, block_type, 1);
|
|
rv34_mc_2mv (r, block_type);
|
|
break;
|
|
case RV34_MB_P_8x8:
|
|
for(i=0;i< 4;i++){
|
|
rv34_pred_mv(r, block_type, i, i);
|
|
rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
/** @} */ // mv group
|
|
|
|
/**
|
|
* @defgroup recons Macroblock reconstruction functions
|
|
* @{
|
|
*/
|
|
/** mapping of RV30/40 intra prediction types to standard H.264 types */
|
|
static const int ittrans[9] = {
|
|
DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED,
|
|
VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED,
|
|
};
|
|
|
|
/** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */
|
|
static const int ittrans16[4] = {
|
|
DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8,
|
|
};
|
|
|
|
/**
|
|
* Perform 4x4 intra prediction.
|
|
*/
|
|
static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right)
|
|
{
|
|
uint8_t *prev = dst - stride + 4;
|
|
uint32_t topleft;
|
|
|
|
if(!up && !left)
|
|
itype = DC_128_PRED;
|
|
else if(!up){
|
|
if(itype == VERT_PRED) itype = HOR_PRED;
|
|
if(itype == DC_PRED) itype = LEFT_DC_PRED;
|
|
}else if(!left){
|
|
if(itype == HOR_PRED) itype = VERT_PRED;
|
|
if(itype == DC_PRED) itype = TOP_DC_PRED;
|
|
if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
|
|
}
|
|
if(!down){
|
|
if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
|
|
if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN;
|
|
if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN;
|
|
}
|
|
if(!right && up){
|
|
topleft = dst[-stride + 3] * 0x01010101;
|
|
prev = (uint8_t*)&topleft;
|
|
}
|
|
r->h.pred4x4[itype](dst, prev, stride);
|
|
}
|
|
|
|
/** add_pixels_clamped for 4x4 block */
|
|
static void rv34_add_4x4_block(uint8_t *dst, int stride, DCTELEM block[64], int off)
|
|
{
|
|
int x, y;
|
|
for(y = 0; y < 4; y++)
|
|
for(x = 0; x < 4; x++)
|
|
dst[x + y*stride] = av_clip_uint8(dst[x + y*stride] + block[off + x+y*8]);
|
|
}
|
|
|
|
static inline int adjust_pred16(int itype, int up, int left)
|
|
{
|
|
if(!up && !left)
|
|
itype = DC_128_PRED8x8;
|
|
else if(!up){
|
|
if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8;
|
|
if(itype == VERT_PRED8x8) itype = HOR_PRED8x8;
|
|
if(itype == DC_PRED8x8) itype = LEFT_DC_PRED8x8;
|
|
}else if(!left){
|
|
if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8;
|
|
if(itype == HOR_PRED8x8) itype = VERT_PRED8x8;
|
|
if(itype == DC_PRED8x8) itype = TOP_DC_PRED8x8;
|
|
}
|
|
return itype;
|
|
}
|
|
|
|
static void rv34_output_macroblock(RV34DecContext *r, int8_t *intra_types, int cbp, int is16)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
DSPContext *dsp = &s->dsp;
|
|
int i, j;
|
|
uint8_t *Y, *U, *V;
|
|
int itype;
|
|
int avail[6*8] = {0};
|
|
int idx;
|
|
|
|
// Set neighbour information.
|
|
if(r->avail_cache[1])
|
|
avail[0] = 1;
|
|
if(r->avail_cache[2])
|
|
avail[1] = avail[2] = 1;
|
|
if(r->avail_cache[3])
|
|
avail[3] = avail[4] = 1;
|
|
if(r->avail_cache[4])
|
|
avail[5] = 1;
|
|
if(r->avail_cache[5])
|
|
avail[8] = avail[16] = 1;
|
|
if(r->avail_cache[9])
|
|
avail[24] = avail[32] = 1;
|
|
|
|
Y = s->dest[0];
|
|
U = s->dest[1];
|
|
V = s->dest[2];
|
|
if(!is16){
|
|
for(j = 0; j < 4; j++){
|
|
idx = 9 + j*8;
|
|
for(i = 0; i < 4; i++, cbp >>= 1, Y += 4, idx++){
|
|
rv34_pred_4x4_block(r, Y, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]);
|
|
avail[idx] = 1;
|
|
if(cbp & 1)
|
|
rv34_add_4x4_block(Y, s->linesize, s->block[(i>>1)+(j&2)], (i&1)*4+(j&1)*32);
|
|
}
|
|
Y += s->linesize * 4 - 4*4;
|
|
intra_types += r->intra_types_stride;
|
|
}
|
|
intra_types -= r->intra_types_stride * 4;
|
|
fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4);
|
|
for(j = 0; j < 2; j++){
|
|
idx = 6 + j*4;
|
|
for(i = 0; i < 2; i++, cbp >>= 1, idx++){
|
|
rv34_pred_4x4_block(r, U + i*4 + j*4*s->uvlinesize, s->uvlinesize, ittrans[intra_types[i*2+j*2*r->intra_types_stride]], r->avail_cache[idx-4], r->avail_cache[idx-1], !i && !j, r->avail_cache[idx-3]);
|
|
rv34_pred_4x4_block(r, V + i*4 + j*4*s->uvlinesize, s->uvlinesize, ittrans[intra_types[i*2+j*2*r->intra_types_stride]], r->avail_cache[idx-4], r->avail_cache[idx-1], !i && !j, r->avail_cache[idx-3]);
|
|
r->avail_cache[idx] = 1;
|
|
if(cbp & 0x01)
|
|
rv34_add_4x4_block(U + i*4 + j*4*s->uvlinesize, s->uvlinesize, s->block[4], i*4+j*32);
|
|
if(cbp & 0x10)
|
|
rv34_add_4x4_block(V + i*4 + j*4*s->uvlinesize, s->uvlinesize, s->block[5], i*4+j*32);
|
|
}
|
|
}
|
|
}else{
|
|
itype = ittrans16[intra_types[0]];
|
|
itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
|
|
r->h.pred16x16[itype](Y, s->linesize);
|
|
dsp->add_pixels_clamped(s->block[0], Y, s->linesize);
|
|
dsp->add_pixels_clamped(s->block[1], Y + 8, s->linesize);
|
|
Y += s->linesize * 8;
|
|
dsp->add_pixels_clamped(s->block[2], Y, s->linesize);
|
|
dsp->add_pixels_clamped(s->block[3], Y + 8, s->linesize);
|
|
|
|
itype = ittrans16[intra_types[0]];
|
|
if(itype == PLANE_PRED8x8) itype = DC_PRED8x8;
|
|
itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
|
|
r->h.pred8x8[itype](U, s->uvlinesize);
|
|
dsp->add_pixels_clamped(s->block[4], U, s->uvlinesize);
|
|
r->h.pred8x8[itype](V, s->uvlinesize);
|
|
dsp->add_pixels_clamped(s->block[5], V, s->uvlinesize);
|
|
}
|
|
}
|
|
|
|
/** @} */ // recons group
|
|
|
|
/**
|
|
* @addtogroup bitstream
|
|
* Decode macroblock header and return CBP in case of success, -1 otherwise.
|
|
*/
|
|
static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int i, t;
|
|
|
|
if(!r->si.type){
|
|
r->is16 = get_bits1(gb);
|
|
if(!r->is16 && !r->rv30){
|
|
if(!get_bits1(gb))
|
|
av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
|
|
}
|
|
s->current_picture_ptr->mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA;
|
|
r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA;
|
|
}else{
|
|
r->block_type = r->decode_mb_info(r);
|
|
if(r->block_type == -1)
|
|
return -1;
|
|
s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
|
|
r->mb_type[mb_pos] = r->block_type;
|
|
if(r->block_type == RV34_MB_SKIP){
|
|
if(s->pict_type == FF_P_TYPE)
|
|
r->mb_type[mb_pos] = RV34_MB_P_16x16;
|
|
if(s->pict_type == FF_B_TYPE)
|
|
r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
|
|
}
|
|
r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
|
|
rv34_decode_mv(r, r->block_type);
|
|
if(r->block_type == RV34_MB_SKIP){
|
|
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
|
|
return 0;
|
|
}
|
|
r->chroma_vlc = 1;
|
|
r->luma_vlc = 0;
|
|
}
|
|
if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
|
|
if(r->is16){
|
|
t = get_bits(gb, 2);
|
|
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
|
|
r->luma_vlc = 2;
|
|
}else{
|
|
if(r->decode_intra_types(r, gb, intra_types) < 0)
|
|
return -1;
|
|
r->luma_vlc = 1;
|
|
}
|
|
r->chroma_vlc = 0;
|
|
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
|
|
}else{
|
|
for(i = 0; i < 16; i++)
|
|
intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
|
|
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
|
|
if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
|
|
r->is16 = 1;
|
|
r->chroma_vlc = 1;
|
|
r->luma_vlc = 2;
|
|
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
|
|
}
|
|
}
|
|
|
|
return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
|
|
}
|
|
|
|
/**
|
|
* @addtogroup recons
|
|
* @{
|
|
*/
|
|
/**
|
|
* mask for retrieving all bits in coded block pattern
|
|
* corresponding to one 8x8 block
|
|
*/
|
|
#define LUMA_CBP_BLOCK_MASK 0x33
|
|
|
|
#define U_CBP_MASK 0x0F0000
|
|
#define V_CBP_MASK 0xF00000
|
|
|
|
|
|
static void rv34_apply_differences(RV34DecContext *r, int cbp)
|
|
{
|
|
static const int shifts[4] = { 0, 2, 8, 10 };
|
|
MpegEncContext *s = &r->s;
|
|
int i;
|
|
|
|
for(i = 0; i < 4; i++)
|
|
if((cbp & (LUMA_CBP_BLOCK_MASK << shifts[i])) || r->block_type == RV34_MB_P_MIX16x16)
|
|
s->dsp.add_pixels_clamped(s->block[i], s->dest[0] + (i & 1)*8 + (i&2)*4*s->linesize, s->linesize);
|
|
if(cbp & U_CBP_MASK)
|
|
s->dsp.add_pixels_clamped(s->block[4], s->dest[1], s->uvlinesize);
|
|
if(cbp & V_CBP_MASK)
|
|
s->dsp.add_pixels_clamped(s->block[5], s->dest[2], s->uvlinesize);
|
|
}
|
|
|
|
static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step)
|
|
{
|
|
int d;
|
|
d = motion_val[0][0] - motion_val[-step][0];
|
|
if(d < -3 || d > 3)
|
|
return 1;
|
|
d = motion_val[0][1] - motion_val[-step][1];
|
|
if(d < -3 || d > 3)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int rv34_set_deblock_coef(RV34DecContext *r)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
int hmvmask = 0, vmvmask = 0, i, j;
|
|
int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
|
|
int16_t (*motion_val)[2] = s->current_picture_ptr->motion_val[0][midx];
|
|
for(j = 0; j < 16; j += 8){
|
|
for(i = 0; i < 2; i++){
|
|
if(is_mv_diff_gt_3(motion_val + i, 1))
|
|
vmvmask |= 0x11 << (j + i*2);
|
|
if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride))
|
|
hmvmask |= 0x03 << (j + i*2);
|
|
}
|
|
motion_val += s->b8_stride;
|
|
}
|
|
if(s->first_slice_line)
|
|
hmvmask &= ~0x000F;
|
|
if(!s->mb_x)
|
|
vmvmask &= ~0x1111;
|
|
if(r->rv30){ //RV30 marks both subblocks on the edge for filtering
|
|
vmvmask |= (vmvmask & 0x4444) >> 1;
|
|
hmvmask |= (hmvmask & 0x0F00) >> 4;
|
|
if(s->mb_x)
|
|
r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3;
|
|
if(!s->first_slice_line)
|
|
r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12;
|
|
}
|
|
return hmvmask | vmvmask;
|
|
}
|
|
|
|
static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int cbp, cbp2;
|
|
int i, blknum, blkoff;
|
|
DCTELEM block16[64];
|
|
int luma_dc_quant;
|
|
int dist;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
|
|
// Calculate which neighbours are available. Maybe it's worth optimizing too.
|
|
memset(r->avail_cache, 0, sizeof(r->avail_cache));
|
|
fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
|
|
dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
|
|
if(s->mb_x && dist)
|
|
r->avail_cache[5] =
|
|
r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1];
|
|
if(dist >= s->mb_width)
|
|
r->avail_cache[2] =
|
|
r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride];
|
|
if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
|
|
r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1];
|
|
if(s->mb_x && dist > s->mb_width)
|
|
r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1];
|
|
|
|
s->qscale = r->si.quant;
|
|
cbp = cbp2 = rv34_decode_mb_header(r, intra_types);
|
|
r->cbp_luma [mb_pos] = cbp;
|
|
r->cbp_chroma[mb_pos] = cbp >> 16;
|
|
if(s->pict_type == FF_I_TYPE)
|
|
r->deblock_coefs[mb_pos] = 0xFFFF;
|
|
else
|
|
r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos];
|
|
s->current_picture_ptr->qscale_table[mb_pos] = s->qscale;
|
|
|
|
if(cbp == -1)
|
|
return -1;
|
|
|
|
luma_dc_quant = r->block_type == RV34_MB_P_MIX16x16 ? r->luma_dc_quant_p[s->qscale] : r->luma_dc_quant_i[s->qscale];
|
|
if(r->is16){
|
|
memset(block16, 0, sizeof(block16));
|
|
rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0);
|
|
rv34_dequant4x4_16x16(block16, rv34_qscale_tab[luma_dc_quant],rv34_qscale_tab[s->qscale]);
|
|
rv34_inv_transform_noround(block16);
|
|
}
|
|
|
|
for(i = 0; i < 16; i++, cbp >>= 1){
|
|
if(!r->is16 && !(cbp & 1)) continue;
|
|
blknum = ((i & 2) >> 1) + ((i & 8) >> 2);
|
|
blkoff = ((i & 1) << 2) + ((i & 4) << 3);
|
|
if(cbp & 1)
|
|
rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->luma_vlc, 0);
|
|
rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[s->qscale],rv34_qscale_tab[s->qscale]);
|
|
if(r->is16) //FIXME: optimize
|
|
s->block[blknum][blkoff] = block16[(i & 3) | ((i & 0xC) << 1)];
|
|
rv34_inv_transform(s->block[blknum] + blkoff);
|
|
}
|
|
if(r->block_type == RV34_MB_P_MIX16x16)
|
|
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
|
|
for(; i < 24; i++, cbp >>= 1){
|
|
if(!(cbp & 1)) continue;
|
|
blknum = ((i & 4) >> 2) + 4;
|
|
blkoff = ((i & 1) << 2) + ((i & 2) << 4);
|
|
rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->chroma_vlc, 1);
|
|
rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]],rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]);
|
|
rv34_inv_transform(s->block[blknum] + blkoff);
|
|
}
|
|
if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos]))
|
|
rv34_output_macroblock(r, intra_types, cbp2, r->is16);
|
|
else
|
|
rv34_apply_differences(r, cbp2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int check_slice_end(RV34DecContext *r, MpegEncContext *s)
|
|
{
|
|
int bits;
|
|
if(s->mb_y >= s->mb_height)
|
|
return 1;
|
|
if(!s->mb_num_left)
|
|
return 1;
|
|
if(r->s.mb_skip_run > 1)
|
|
return 0;
|
|
bits = r->bits - get_bits_count(&s->gb);
|
|
if(bits < 0 || (bits < 8 && !show_bits(&s->gb, bits)))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static inline int slice_compare(SliceInfo *si1, SliceInfo *si2)
|
|
{
|
|
return si1->type != si2->type ||
|
|
si1->start >= si2->start ||
|
|
si1->width != si2->width ||
|
|
si1->height != si2->height||
|
|
si1->pts != si2->pts;
|
|
}
|
|
|
|
static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size)
|
|
{
|
|
MpegEncContext *s = &r->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int mb_pos;
|
|
int res;
|
|
|
|
init_get_bits(&r->s.gb, buf, buf_size*8);
|
|
res = r->parse_slice_header(r, gb, &r->si);
|
|
if(res < 0){
|
|
av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) {
|
|
if(s->width != r->si.width || s->height != r->si.height){
|
|
av_log(s->avctx, AV_LOG_DEBUG, "Changing dimensions to %dx%d\n", r->si.width,r->si.height);
|
|
MPV_common_end(s);
|
|
s->width = r->si.width;
|
|
s->height = r->si.height;
|
|
avcodec_set_dimensions(s->avctx, s->width, s->height);
|
|
if(MPV_common_init(s) < 0)
|
|
return -1;
|
|
r->intra_types_stride = s->mb_width*4 + 4;
|
|
r->intra_types_hist = av_realloc(r->intra_types_hist, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist));
|
|
r->intra_types = r->intra_types_hist + r->intra_types_stride * 4;
|
|
r->mb_type = av_realloc(r->mb_type, r->s.mb_stride * r->s.mb_height * sizeof(*r->mb_type));
|
|
r->cbp_luma = av_realloc(r->cbp_luma, r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_luma));
|
|
r->cbp_chroma = av_realloc(r->cbp_chroma, r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_chroma));
|
|
r->deblock_coefs = av_realloc(r->deblock_coefs, r->s.mb_stride * r->s.mb_height * sizeof(*r->deblock_coefs));
|
|
}
|
|
s->pict_type = r->si.type ? r->si.type : FF_I_TYPE;
|
|
if(MPV_frame_start(s, s->avctx) < 0)
|
|
return -1;
|
|
ff_er_frame_start(s);
|
|
r->cur_pts = r->si.pts;
|
|
if(s->pict_type != FF_B_TYPE){
|
|
r->last_pts = r->next_pts;
|
|
r->next_pts = r->cur_pts;
|
|
}
|
|
s->mb_x = s->mb_y = 0;
|
|
}
|
|
|
|
r->si.end = end;
|
|
s->qscale = r->si.quant;
|
|
r->bits = buf_size*8;
|
|
s->mb_num_left = r->si.end - r->si.start;
|
|
r->s.mb_skip_run = 0;
|
|
|
|
mb_pos = s->mb_x + s->mb_y * s->mb_width;
|
|
if(r->si.start != mb_pos){
|
|
av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos);
|
|
s->mb_x = r->si.start % s->mb_width;
|
|
s->mb_y = r->si.start / s->mb_width;
|
|
}
|
|
memset(r->intra_types_hist, -1, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist));
|
|
s->first_slice_line = 1;
|
|
s->resync_mb_x= s->mb_x;
|
|
s->resync_mb_y= s->mb_y;
|
|
|
|
ff_init_block_index(s);
|
|
while(!check_slice_end(r, s)) {
|
|
ff_update_block_index(s);
|
|
s->dsp.clear_blocks(s->block[0]);
|
|
|
|
if(rv34_decode_macroblock(r, r->intra_types + s->mb_x * 4 + 4) < 0){
|
|
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_ERROR|DC_ERROR|MV_ERROR);
|
|
return -1;
|
|
}
|
|
if (++s->mb_x == s->mb_width) {
|
|
s->mb_x = 0;
|
|
s->mb_y++;
|
|
ff_init_block_index(s);
|
|
|
|
memmove(r->intra_types_hist, r->intra_types, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
|
|
memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
|
|
|
|
if(r->loop_filter && s->mb_y >= 2)
|
|
r->loop_filter(r, s->mb_y - 2);
|
|
}
|
|
if(s->mb_x == s->resync_mb_x)
|
|
s->first_slice_line=0;
|
|
s->mb_num_left--;
|
|
}
|
|
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
|
|
|
|
return s->mb_y == s->mb_height;
|
|
}
|
|
|
|
/** @} */ // recons group end
|
|
|
|
/**
|
|
* Initialize decoder.
|
|
*/
|
|
av_cold int ff_rv34_decode_init(AVCodecContext *avctx)
|
|
{
|
|
RV34DecContext *r = avctx->priv_data;
|
|
MpegEncContext *s = &r->s;
|
|
|
|
MPV_decode_defaults(s);
|
|
s->avctx= avctx;
|
|
s->out_format = FMT_H263;
|
|
s->codec_id= avctx->codec_id;
|
|
|
|
s->width = avctx->width;
|
|
s->height = avctx->height;
|
|
|
|
r->s.avctx = avctx;
|
|
avctx->flags |= CODEC_FLAG_EMU_EDGE;
|
|
r->s.flags |= CODEC_FLAG_EMU_EDGE;
|
|
avctx->pix_fmt = PIX_FMT_YUV420P;
|
|
avctx->has_b_frames = 1;
|
|
s->low_delay = 0;
|
|
|
|
if (MPV_common_init(s) < 0)
|
|
return -1;
|
|
|
|
ff_h264_pred_init(&r->h, CODEC_ID_RV40);
|
|
|
|
r->intra_types_stride = 4*s->mb_stride + 4;
|
|
r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist));
|
|
r->intra_types = r->intra_types_hist + r->intra_types_stride * 4;
|
|
|
|
r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height * sizeof(*r->mb_type));
|
|
|
|
r->cbp_luma = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_luma));
|
|
r->cbp_chroma = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_chroma));
|
|
r->deblock_coefs = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->deblock_coefs));
|
|
|
|
if(!intra_vlcs[0].cbppattern[0].bits)
|
|
rv34_init_tables();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n)
|
|
{
|
|
if(avctx->slice_count) return avctx->slice_offset[n];
|
|
else return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) : AV_RB32(buf + n*8);
|
|
}
|
|
|
|
int ff_rv34_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
AVPacket *avpkt)
|
|
{
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
RV34DecContext *r = avctx->priv_data;
|
|
MpegEncContext *s = &r->s;
|
|
AVFrame *pict = data;
|
|
SliceInfo si;
|
|
int i;
|
|
int slice_count;
|
|
const uint8_t *slices_hdr = NULL;
|
|
int last = 0;
|
|
|
|
/* no supplementary picture */
|
|
if (buf_size == 0) {
|
|
/* special case for last picture */
|
|
if (s->low_delay==0 && s->next_picture_ptr) {
|
|
*pict= *(AVFrame*)s->next_picture_ptr;
|
|
s->next_picture_ptr= NULL;
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if(!avctx->slice_count){
|
|
slice_count = (*buf++) + 1;
|
|
slices_hdr = buf + 4;
|
|
buf += 8 * slice_count;
|
|
}else
|
|
slice_count = avctx->slice_count;
|
|
|
|
//parse first slice header to check whether this frame can be decoded
|
|
if(get_slice_offset(avctx, slices_hdr, 0) > buf_size){
|
|
av_log(avctx, AV_LOG_ERROR, "Slice offset is greater than frame size\n");
|
|
return -1;
|
|
}
|
|
init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, 0), buf_size-get_slice_offset(avctx, slices_hdr, 0));
|
|
if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){
|
|
av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n");
|
|
return -1;
|
|
}
|
|
if((!s->last_picture_ptr || !s->last_picture_ptr->data[0]) && si.type == FF_B_TYPE)
|
|
return -1;
|
|
/* skip b frames if we are in a hurry */
|
|
if(avctx->hurry_up && si.type==FF_B_TYPE) return buf_size;
|
|
if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==FF_B_TYPE)
|
|
|| (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=FF_I_TYPE)
|
|
|| avctx->skip_frame >= AVDISCARD_ALL)
|
|
return buf_size;
|
|
/* skip everything if we are in a hurry>=5 */
|
|
if(avctx->hurry_up>=5)
|
|
return buf_size;
|
|
|
|
for(i=0; i<slice_count; i++){
|
|
int offset= get_slice_offset(avctx, slices_hdr, i);
|
|
int size;
|
|
if(i+1 == slice_count)
|
|
size= buf_size - offset;
|
|
else
|
|
size= get_slice_offset(avctx, slices_hdr, i+1) - offset;
|
|
|
|
if(offset > buf_size){
|
|
av_log(avctx, AV_LOG_ERROR, "Slice offset is greater than frame size\n");
|
|
break;
|
|
}
|
|
|
|
r->si.end = s->mb_width * s->mb_height;
|
|
if(i+1 < slice_count){
|
|
init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, i+1), (buf_size-get_slice_offset(avctx, slices_hdr, i+1))*8);
|
|
if(r->parse_slice_header(r, &r->s.gb, &si) < 0){
|
|
if(i+2 < slice_count)
|
|
size = get_slice_offset(avctx, slices_hdr, i+2) - offset;
|
|
else
|
|
size = buf_size - offset;
|
|
}else
|
|
r->si.end = si.start;
|
|
}
|
|
last = rv34_decode_slice(r, r->si.end, buf + offset, size);
|
|
s->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start;
|
|
if(last)
|
|
break;
|
|
}
|
|
|
|
if(last){
|
|
if(r->loop_filter)
|
|
r->loop_filter(r, s->mb_height - 1);
|
|
ff_er_frame_end(s);
|
|
MPV_frame_end(s);
|
|
if (s->pict_type == FF_B_TYPE || s->low_delay) {
|
|
*pict= *(AVFrame*)s->current_picture_ptr;
|
|
} else if (s->last_picture_ptr != NULL) {
|
|
*pict= *(AVFrame*)s->last_picture_ptr;
|
|
}
|
|
|
|
if(s->last_picture_ptr || s->low_delay){
|
|
*data_size = sizeof(AVFrame);
|
|
ff_print_debug_info(s, pict);
|
|
}
|
|
s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...)
|
|
}
|
|
return buf_size;
|
|
}
|
|
|
|
av_cold int ff_rv34_decode_end(AVCodecContext *avctx)
|
|
{
|
|
RV34DecContext *r = avctx->priv_data;
|
|
|
|
MPV_common_end(&r->s);
|
|
|
|
av_freep(&r->intra_types_hist);
|
|
r->intra_types = NULL;
|
|
av_freep(&r->mb_type);
|
|
av_freep(&r->cbp_luma);
|
|
av_freep(&r->cbp_chroma);
|
|
av_freep(&r->deblock_coefs);
|
|
|
|
return 0;
|
|
}
|