mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-22 07:20:45 +00:00
72415b2adb
is deprecated and will be dropped at the next major bump. Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
1353 lines
46 KiB
C
1353 lines
46 KiB
C
/*
|
|
* MPEG4 encoder.
|
|
* Copyright (c) 2000,2001 Fabrice Bellard
|
|
* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "mpegvideo.h"
|
|
#include "h263.h"
|
|
#include "mpeg4video.h"
|
|
|
|
//The uni_DCtab_* tables below contain unified bits+length tables to encode DC
|
|
//differences in mpeg4. Unified in the sense that the specification specifies
|
|
//this encoding in several steps.
|
|
static uint8_t uni_DCtab_lum_len[512];
|
|
static uint8_t uni_DCtab_chrom_len[512];
|
|
static uint16_t uni_DCtab_lum_bits[512];
|
|
static uint16_t uni_DCtab_chrom_bits[512];
|
|
|
|
//unified encoding tables for run length encoding of coefficients
|
|
//unified in the sense that the specification specifies the encoding in several steps.
|
|
static uint32_t uni_mpeg4_intra_rl_bits[64*64*2*2];
|
|
static uint8_t uni_mpeg4_intra_rl_len [64*64*2*2];
|
|
static uint32_t uni_mpeg4_inter_rl_bits[64*64*2*2];
|
|
static uint8_t uni_mpeg4_inter_rl_len [64*64*2*2];
|
|
//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128 + (run)*256 + (level))
|
|
//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run) + (level)*64)
|
|
#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run)*128 + (level))
|
|
|
|
/* mpeg4
|
|
inter
|
|
max level: 24/6
|
|
max run: 53/63
|
|
|
|
intra
|
|
max level: 53/16
|
|
max run: 29/41
|
|
*/
|
|
|
|
|
|
/**
|
|
* Returns the number of bits that encoding the 8x8 block in block would need.
|
|
* @param[in] block_last_index last index in scantable order that refers to a non zero element in block.
|
|
*/
|
|
static inline int get_block_rate(MpegEncContext * s, DCTELEM block[64], int block_last_index, uint8_t scantable[64]){
|
|
int last=0;
|
|
int j;
|
|
int rate=0;
|
|
|
|
for(j=1; j<=block_last_index; j++){
|
|
const int index= scantable[j];
|
|
int level= block[index];
|
|
if(level){
|
|
level+= 64;
|
|
if((level&(~127)) == 0){
|
|
if(j<block_last_index) rate+= s->intra_ac_vlc_length [UNI_AC_ENC_INDEX(j-last-1, level)];
|
|
else rate+= s->intra_ac_vlc_last_length[UNI_AC_ENC_INDEX(j-last-1, level)];
|
|
}else
|
|
rate += s->ac_esc_length;
|
|
|
|
last= j;
|
|
}
|
|
}
|
|
|
|
return rate;
|
|
}
|
|
|
|
|
|
/**
|
|
* Restores the ac coefficients in block that have been changed by decide_ac_pred().
|
|
* This function also restores s->block_last_index.
|
|
* @param[in,out] block MB coefficients, these will be restored
|
|
* @param[in] dir ac prediction direction for each 8x8 block
|
|
* @param[out] st scantable for each 8x8 block
|
|
* @param[in] zigzag_last_index index refering to the last non zero coefficient in zigzag order
|
|
*/
|
|
static inline void restore_ac_coeffs(MpegEncContext * s, DCTELEM block[6][64], const int dir[6], uint8_t *st[6], const int zigzag_last_index[6])
|
|
{
|
|
int i, n;
|
|
memcpy(s->block_last_index, zigzag_last_index, sizeof(int)*6);
|
|
|
|
for(n=0; n<6; n++){
|
|
int16_t *ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
|
|
|
|
st[n]= s->intra_scantable.permutated;
|
|
if(dir[n]){
|
|
/* top prediction */
|
|
for(i=1; i<8; i++){
|
|
block[n][s->dsp.idct_permutation[i ]] = ac_val[i+8];
|
|
}
|
|
}else{
|
|
/* left prediction */
|
|
for(i=1; i<8; i++){
|
|
block[n][s->dsp.idct_permutation[i<<3]]= ac_val[i ];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the optimal value (0 or 1) for the ac_pred element for the given MB in mpeg4.
|
|
* This function will also update s->block_last_index and s->ac_val.
|
|
* @param[in,out] block MB coefficients, these will be updated if 1 is returned
|
|
* @param[in] dir ac prediction direction for each 8x8 block
|
|
* @param[out] st scantable for each 8x8 block
|
|
* @param[out] zigzag_last_index index refering to the last non zero coefficient in zigzag order
|
|
*/
|
|
static inline int decide_ac_pred(MpegEncContext * s, DCTELEM block[6][64], const int dir[6], uint8_t *st[6], int zigzag_last_index[6])
|
|
{
|
|
int score= 0;
|
|
int i, n;
|
|
int8_t * const qscale_table= s->current_picture.qscale_table;
|
|
|
|
memcpy(zigzag_last_index, s->block_last_index, sizeof(int)*6);
|
|
|
|
for(n=0; n<6; n++){
|
|
int16_t *ac_val, *ac_val1;
|
|
|
|
score -= get_block_rate(s, block[n], s->block_last_index[n], s->intra_scantable.permutated);
|
|
|
|
ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
|
|
ac_val1= ac_val;
|
|
if(dir[n]){
|
|
const int xy= s->mb_x + s->mb_y*s->mb_stride - s->mb_stride;
|
|
/* top prediction */
|
|
ac_val-= s->block_wrap[n]*16;
|
|
if(s->mb_y==0 || s->qscale == qscale_table[xy] || n==2 || n==3){
|
|
/* same qscale */
|
|
for(i=1; i<8; i++){
|
|
const int level= block[n][s->dsp.idct_permutation[i ]];
|
|
block[n][s->dsp.idct_permutation[i ]] = level - ac_val[i+8];
|
|
ac_val1[i ]= block[n][s->dsp.idct_permutation[i<<3]];
|
|
ac_val1[i+8]= level;
|
|
}
|
|
}else{
|
|
/* different qscale, we must rescale */
|
|
for(i=1; i<8; i++){
|
|
const int level= block[n][s->dsp.idct_permutation[i ]];
|
|
block[n][s->dsp.idct_permutation[i ]] = level - ROUNDED_DIV(ac_val[i + 8]*qscale_table[xy], s->qscale);
|
|
ac_val1[i ]= block[n][s->dsp.idct_permutation[i<<3]];
|
|
ac_val1[i+8]= level;
|
|
}
|
|
}
|
|
st[n]= s->intra_h_scantable.permutated;
|
|
}else{
|
|
const int xy= s->mb_x-1 + s->mb_y*s->mb_stride;
|
|
/* left prediction */
|
|
ac_val-= 16;
|
|
if(s->mb_x==0 || s->qscale == qscale_table[xy] || n==1 || n==3){
|
|
/* same qscale */
|
|
for(i=1; i<8; i++){
|
|
const int level= block[n][s->dsp.idct_permutation[i<<3]];
|
|
block[n][s->dsp.idct_permutation[i<<3]]= level - ac_val[i];
|
|
ac_val1[i ]= level;
|
|
ac_val1[i+8]= block[n][s->dsp.idct_permutation[i ]];
|
|
}
|
|
}else{
|
|
/* different qscale, we must rescale */
|
|
for(i=1; i<8; i++){
|
|
const int level= block[n][s->dsp.idct_permutation[i<<3]];
|
|
block[n][s->dsp.idct_permutation[i<<3]]= level - ROUNDED_DIV(ac_val[i]*qscale_table[xy], s->qscale);
|
|
ac_val1[i ]= level;
|
|
ac_val1[i+8]= block[n][s->dsp.idct_permutation[i ]];
|
|
}
|
|
}
|
|
st[n]= s->intra_v_scantable.permutated;
|
|
}
|
|
|
|
for(i=63; i>0; i--) //FIXME optimize
|
|
if(block[n][ st[n][i] ]) break;
|
|
s->block_last_index[n]= i;
|
|
|
|
score += get_block_rate(s, block[n], s->block_last_index[n], st[n]);
|
|
}
|
|
|
|
if(score < 0){
|
|
return 1;
|
|
}else{
|
|
restore_ac_coeffs(s, block, dir, st, zigzag_last_index);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* modify mb_type & qscale so that encoding is acually possible in mpeg4
|
|
*/
|
|
void ff_clean_mpeg4_qscales(MpegEncContext *s){
|
|
int i;
|
|
int8_t * const qscale_table= s->current_picture.qscale_table;
|
|
|
|
ff_clean_h263_qscales(s);
|
|
|
|
if(s->pict_type== FF_B_TYPE){
|
|
int odd=0;
|
|
/* ok, come on, this isn't funny anymore, there's more code for handling this mpeg4 mess than for the actual adaptive quantization */
|
|
|
|
for(i=0; i<s->mb_num; i++){
|
|
int mb_xy= s->mb_index2xy[i];
|
|
odd += qscale_table[mb_xy]&1;
|
|
}
|
|
|
|
if(2*odd > s->mb_num) odd=1;
|
|
else odd=0;
|
|
|
|
for(i=0; i<s->mb_num; i++){
|
|
int mb_xy= s->mb_index2xy[i];
|
|
if((qscale_table[mb_xy]&1) != odd)
|
|
qscale_table[mb_xy]++;
|
|
if(qscale_table[mb_xy] > 31)
|
|
qscale_table[mb_xy]= 31;
|
|
}
|
|
|
|
for(i=1; i<s->mb_num; i++){
|
|
int mb_xy= s->mb_index2xy[i];
|
|
if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_DIRECT)){
|
|
s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_BIDIR;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* encodes the dc value.
|
|
* @param n block index (0-3 are luma, 4-5 are chroma)
|
|
*/
|
|
static inline void mpeg4_encode_dc(PutBitContext * s, int level, int n)
|
|
{
|
|
#if 1
|
|
/* DC will overflow if level is outside the [-255,255] range. */
|
|
level+=256;
|
|
if (n < 4) {
|
|
/* luminance */
|
|
put_bits(s, uni_DCtab_lum_len[level], uni_DCtab_lum_bits[level]);
|
|
} else {
|
|
/* chrominance */
|
|
put_bits(s, uni_DCtab_chrom_len[level], uni_DCtab_chrom_bits[level]);
|
|
}
|
|
#else
|
|
int size, v;
|
|
/* find number of bits */
|
|
size = 0;
|
|
v = abs(level);
|
|
while (v) {
|
|
v >>= 1;
|
|
size++;
|
|
}
|
|
|
|
if (n < 4) {
|
|
/* luminance */
|
|
put_bits(&s->pb, ff_mpeg4_DCtab_lum[size][1], ff_mpeg4_DCtab_lum[size][0]);
|
|
} else {
|
|
/* chrominance */
|
|
put_bits(&s->pb, ff_mpeg4_DCtab_chrom[size][1], ff_mpeg4_DCtab_chrom[size][0]);
|
|
}
|
|
|
|
/* encode remaining bits */
|
|
if (size > 0) {
|
|
if (level < 0)
|
|
level = (-level) ^ ((1 << size) - 1);
|
|
put_bits(&s->pb, size, level);
|
|
if (size > 8)
|
|
put_bits(&s->pb, 1, 1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static inline int mpeg4_get_dc_length(int level, int n){
|
|
if (n < 4) {
|
|
return uni_DCtab_lum_len[level + 256];
|
|
} else {
|
|
return uni_DCtab_chrom_len[level + 256];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* encodes a 8x8 block
|
|
* @param n block index (0-3 are luma, 4-5 are chroma)
|
|
*/
|
|
static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n, int intra_dc,
|
|
uint8_t *scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb)
|
|
{
|
|
int i, last_non_zero;
|
|
#if 0 //variables for the outcommented version
|
|
int code, sign, last;
|
|
#endif
|
|
const RLTable *rl;
|
|
uint32_t *bits_tab;
|
|
uint8_t *len_tab;
|
|
const int last_index = s->block_last_index[n];
|
|
|
|
if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away
|
|
/* mpeg4 based DC predictor */
|
|
mpeg4_encode_dc(dc_pb, intra_dc, n);
|
|
if(last_index<1) return;
|
|
i = 1;
|
|
rl = &ff_mpeg4_rl_intra;
|
|
bits_tab= uni_mpeg4_intra_rl_bits;
|
|
len_tab = uni_mpeg4_intra_rl_len;
|
|
} else {
|
|
if(last_index<0) return;
|
|
i = 0;
|
|
rl = &ff_h263_rl_inter;
|
|
bits_tab= uni_mpeg4_inter_rl_bits;
|
|
len_tab = uni_mpeg4_inter_rl_len;
|
|
}
|
|
|
|
/* AC coefs */
|
|
last_non_zero = i - 1;
|
|
#if 1
|
|
for (; i < last_index; i++) {
|
|
int level = block[ scan_table[i] ];
|
|
if (level) {
|
|
int run = i - last_non_zero - 1;
|
|
level+=64;
|
|
if((level&(~127)) == 0){
|
|
const int index= UNI_MPEG4_ENC_INDEX(0, run, level);
|
|
put_bits(ac_pb, len_tab[index], bits_tab[index]);
|
|
}else{ //ESC3
|
|
put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(0<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1);
|
|
}
|
|
last_non_zero = i;
|
|
}
|
|
}
|
|
/*if(i<=last_index)*/{
|
|
int level = block[ scan_table[i] ];
|
|
int run = i - last_non_zero - 1;
|
|
level+=64;
|
|
if((level&(~127)) == 0){
|
|
const int index= UNI_MPEG4_ENC_INDEX(1, run, level);
|
|
put_bits(ac_pb, len_tab[index], bits_tab[index]);
|
|
}else{ //ESC3
|
|
put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(1<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1);
|
|
}
|
|
}
|
|
#else
|
|
for (; i <= last_index; i++) {
|
|
const int slevel = block[ scan_table[i] ];
|
|
if (slevel) {
|
|
int level;
|
|
int run = i - last_non_zero - 1;
|
|
last = (i == last_index);
|
|
sign = 0;
|
|
level = slevel;
|
|
if (level < 0) {
|
|
sign = 1;
|
|
level = -level;
|
|
}
|
|
code = get_rl_index(rl, last, run, level);
|
|
put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
|
|
if (code == rl->n) {
|
|
int level1, run1;
|
|
level1 = level - rl->max_level[last][run];
|
|
if (level1 < 1)
|
|
goto esc2;
|
|
code = get_rl_index(rl, last, run, level1);
|
|
if (code == rl->n) {
|
|
esc2:
|
|
put_bits(ac_pb, 1, 1);
|
|
if (level > MAX_LEVEL)
|
|
goto esc3;
|
|
run1 = run - rl->max_run[last][level] - 1;
|
|
if (run1 < 0)
|
|
goto esc3;
|
|
code = get_rl_index(rl, last, run1, level);
|
|
if (code == rl->n) {
|
|
esc3:
|
|
/* third escape */
|
|
put_bits(ac_pb, 1, 1);
|
|
put_bits(ac_pb, 1, last);
|
|
put_bits(ac_pb, 6, run);
|
|
put_bits(ac_pb, 1, 1);
|
|
put_sbits(ac_pb, 12, slevel);
|
|
put_bits(ac_pb, 1, 1);
|
|
} else {
|
|
/* second escape */
|
|
put_bits(ac_pb, 1, 0);
|
|
put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
|
|
put_bits(ac_pb, 1, sign);
|
|
}
|
|
} else {
|
|
/* first escape */
|
|
put_bits(ac_pb, 1, 0);
|
|
put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
|
|
put_bits(ac_pb, 1, sign);
|
|
}
|
|
} else {
|
|
put_bits(ac_pb, 1, sign);
|
|
}
|
|
last_non_zero = i;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static int mpeg4_get_block_length(MpegEncContext * s, DCTELEM * block, int n, int intra_dc,
|
|
uint8_t *scan_table)
|
|
{
|
|
int i, last_non_zero;
|
|
uint8_t *len_tab;
|
|
const int last_index = s->block_last_index[n];
|
|
int len=0;
|
|
|
|
if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away
|
|
/* mpeg4 based DC predictor */
|
|
len += mpeg4_get_dc_length(intra_dc, n);
|
|
if(last_index<1) return len;
|
|
i = 1;
|
|
len_tab = uni_mpeg4_intra_rl_len;
|
|
} else {
|
|
if(last_index<0) return 0;
|
|
i = 0;
|
|
len_tab = uni_mpeg4_inter_rl_len;
|
|
}
|
|
|
|
/* AC coefs */
|
|
last_non_zero = i - 1;
|
|
for (; i < last_index; i++) {
|
|
int level = block[ scan_table[i] ];
|
|
if (level) {
|
|
int run = i - last_non_zero - 1;
|
|
level+=64;
|
|
if((level&(~127)) == 0){
|
|
const int index= UNI_MPEG4_ENC_INDEX(0, run, level);
|
|
len += len_tab[index];
|
|
}else{ //ESC3
|
|
len += 7+2+1+6+1+12+1;
|
|
}
|
|
last_non_zero = i;
|
|
}
|
|
}
|
|
/*if(i<=last_index)*/{
|
|
int level = block[ scan_table[i] ];
|
|
int run = i - last_non_zero - 1;
|
|
level+=64;
|
|
if((level&(~127)) == 0){
|
|
const int index= UNI_MPEG4_ENC_INDEX(1, run, level);
|
|
len += len_tab[index];
|
|
}else{ //ESC3
|
|
len += 7+2+1+6+1+12+1;
|
|
}
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static inline void mpeg4_encode_blocks(MpegEncContext * s, DCTELEM block[6][64], int intra_dc[6],
|
|
uint8_t **scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb){
|
|
int i;
|
|
|
|
if(scan_table){
|
|
if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){
|
|
for (i = 0; i < 6; i++) {
|
|
skip_put_bits(&s->pb, mpeg4_get_block_length(s, block[i], i, intra_dc[i], scan_table[i]));
|
|
}
|
|
}else{
|
|
/* encode each block */
|
|
for (i = 0; i < 6; i++) {
|
|
mpeg4_encode_block(s, block[i], i, intra_dc[i], scan_table[i], dc_pb, ac_pb);
|
|
}
|
|
}
|
|
}else{
|
|
if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){
|
|
for (i = 0; i < 6; i++) {
|
|
skip_put_bits(&s->pb, mpeg4_get_block_length(s, block[i], i, 0, s->intra_scantable.permutated));
|
|
}
|
|
}else{
|
|
/* encode each block */
|
|
for (i = 0; i < 6; i++) {
|
|
mpeg4_encode_block(s, block[i], i, 0, s->intra_scantable.permutated, dc_pb, ac_pb);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//FIXME this is duplicated to h263.c
|
|
static const int dquant_code[5]= {1,0,9,2,3};
|
|
|
|
void mpeg4_encode_mb(MpegEncContext * s,
|
|
DCTELEM block[6][64],
|
|
int motion_x, int motion_y)
|
|
{
|
|
int cbpc, cbpy, pred_x, pred_y;
|
|
PutBitContext * const pb2 = s->data_partitioning ? &s->pb2 : &s->pb;
|
|
PutBitContext * const tex_pb = s->data_partitioning && s->pict_type!=FF_B_TYPE ? &s->tex_pb : &s->pb;
|
|
PutBitContext * const dc_pb = s->data_partitioning && s->pict_type!=FF_I_TYPE ? &s->pb2 : &s->pb;
|
|
const int interleaved_stats= (s->flags&CODEC_FLAG_PASS1) && !s->data_partitioning ? 1 : 0;
|
|
|
|
if (!s->mb_intra) {
|
|
int i, cbp;
|
|
|
|
if(s->pict_type==FF_B_TYPE){
|
|
static const int mb_type_table[8]= {-1, 3, 2, 1,-1,-1,-1, 0}; /* convert from mv_dir to type */
|
|
int mb_type= mb_type_table[s->mv_dir];
|
|
|
|
if(s->mb_x==0){
|
|
for(i=0; i<2; i++){
|
|
s->last_mv[i][0][0]=
|
|
s->last_mv[i][0][1]=
|
|
s->last_mv[i][1][0]=
|
|
s->last_mv[i][1][1]= 0;
|
|
}
|
|
}
|
|
|
|
assert(s->dquant>=-2 && s->dquant<=2);
|
|
assert((s->dquant&1)==0);
|
|
assert(mb_type>=0);
|
|
|
|
/* nothing to do if this MB was skipped in the next P Frame */
|
|
if(s->next_picture.mbskip_table[s->mb_y * s->mb_stride + s->mb_x]){ //FIXME avoid DCT & ...
|
|
s->skip_count++;
|
|
s->mv[0][0][0]=
|
|
s->mv[0][0][1]=
|
|
s->mv[1][0][0]=
|
|
s->mv[1][0][1]= 0;
|
|
s->mv_dir= MV_DIR_FORWARD; //doesn't matter
|
|
s->qscale -= s->dquant;
|
|
// s->mb_skipped=1;
|
|
|
|
return;
|
|
}
|
|
|
|
cbp= get_b_cbp(s, block, motion_x, motion_y, mb_type);
|
|
|
|
if ((cbp | motion_x | motion_y | mb_type) ==0) {
|
|
/* direct MB with MV={0,0} */
|
|
assert(s->dquant==0);
|
|
|
|
put_bits(&s->pb, 1, 1); /* mb not coded modb1=1 */
|
|
|
|
if(interleaved_stats){
|
|
s->misc_bits++;
|
|
s->last_bits++;
|
|
}
|
|
s->skip_count++;
|
|
return;
|
|
}
|
|
|
|
put_bits(&s->pb, 1, 0); /* mb coded modb1=0 */
|
|
put_bits(&s->pb, 1, cbp ? 0 : 1); /* modb2 */ //FIXME merge
|
|
put_bits(&s->pb, mb_type+1, 1); // this table is so simple that we don't need it :)
|
|
if(cbp) put_bits(&s->pb, 6, cbp);
|
|
|
|
if(cbp && mb_type){
|
|
if(s->dquant)
|
|
put_bits(&s->pb, 2, (s->dquant>>2)+3);
|
|
else
|
|
put_bits(&s->pb, 1, 0);
|
|
}else
|
|
s->qscale -= s->dquant;
|
|
|
|
if(!s->progressive_sequence){
|
|
if(cbp)
|
|
put_bits(&s->pb, 1, s->interlaced_dct);
|
|
if(mb_type) // not direct mode
|
|
put_bits(&s->pb, 1, s->mv_type == MV_TYPE_FIELD);
|
|
}
|
|
|
|
if(interleaved_stats){
|
|
s->misc_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
if(mb_type == 0){
|
|
assert(s->mv_dir & MV_DIRECT);
|
|
ff_h263_encode_motion_vector(s, motion_x, motion_y, 1);
|
|
s->b_count++;
|
|
s->f_count++;
|
|
}else{
|
|
assert(mb_type > 0 && mb_type < 4);
|
|
if(s->mv_type != MV_TYPE_FIELD){
|
|
if(s->mv_dir & MV_DIR_FORWARD){
|
|
ff_h263_encode_motion_vector(s, s->mv[0][0][0] - s->last_mv[0][0][0],
|
|
s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
|
|
s->last_mv[0][0][0]= s->last_mv[0][1][0]= s->mv[0][0][0];
|
|
s->last_mv[0][0][1]= s->last_mv[0][1][1]= s->mv[0][0][1];
|
|
s->f_count++;
|
|
}
|
|
if(s->mv_dir & MV_DIR_BACKWARD){
|
|
ff_h263_encode_motion_vector(s, s->mv[1][0][0] - s->last_mv[1][0][0],
|
|
s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
|
|
s->last_mv[1][0][0]= s->last_mv[1][1][0]= s->mv[1][0][0];
|
|
s->last_mv[1][0][1]= s->last_mv[1][1][1]= s->mv[1][0][1];
|
|
s->b_count++;
|
|
}
|
|
}else{
|
|
if(s->mv_dir & MV_DIR_FORWARD){
|
|
put_bits(&s->pb, 1, s->field_select[0][0]);
|
|
put_bits(&s->pb, 1, s->field_select[0][1]);
|
|
}
|
|
if(s->mv_dir & MV_DIR_BACKWARD){
|
|
put_bits(&s->pb, 1, s->field_select[1][0]);
|
|
put_bits(&s->pb, 1, s->field_select[1][1]);
|
|
}
|
|
if(s->mv_dir & MV_DIR_FORWARD){
|
|
for(i=0; i<2; i++){
|
|
ff_h263_encode_motion_vector(s, s->mv[0][i][0] - s->last_mv[0][i][0] ,
|
|
s->mv[0][i][1] - s->last_mv[0][i][1]/2, s->f_code);
|
|
s->last_mv[0][i][0]= s->mv[0][i][0];
|
|
s->last_mv[0][i][1]= s->mv[0][i][1]*2;
|
|
}
|
|
s->f_count++;
|
|
}
|
|
if(s->mv_dir & MV_DIR_BACKWARD){
|
|
for(i=0; i<2; i++){
|
|
ff_h263_encode_motion_vector(s, s->mv[1][i][0] - s->last_mv[1][i][0] ,
|
|
s->mv[1][i][1] - s->last_mv[1][i][1]/2, s->b_code);
|
|
s->last_mv[1][i][0]= s->mv[1][i][0];
|
|
s->last_mv[1][i][1]= s->mv[1][i][1]*2;
|
|
}
|
|
s->b_count++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(interleaved_stats){
|
|
s->mv_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
mpeg4_encode_blocks(s, block, NULL, NULL, NULL, &s->pb);
|
|
|
|
if(interleaved_stats){
|
|
s->p_tex_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
}else{ /* s->pict_type==FF_B_TYPE */
|
|
cbp= get_p_cbp(s, block, motion_x, motion_y);
|
|
|
|
if ((cbp | motion_x | motion_y | s->dquant) == 0 && s->mv_type==MV_TYPE_16X16) {
|
|
/* check if the B frames can skip it too, as we must skip it if we skip here
|
|
why didn't they just compress the skip-mb bits instead of reusing them ?! */
|
|
if(s->max_b_frames>0){
|
|
int i;
|
|
int x,y, offset;
|
|
uint8_t *p_pic;
|
|
|
|
x= s->mb_x*16;
|
|
y= s->mb_y*16;
|
|
if(x+16 > s->width) x= s->width-16;
|
|
if(y+16 > s->height) y= s->height-16;
|
|
|
|
offset= x + y*s->linesize;
|
|
p_pic= s->new_picture.data[0] + offset;
|
|
|
|
s->mb_skipped=1;
|
|
for(i=0; i<s->max_b_frames; i++){
|
|
uint8_t *b_pic;
|
|
int diff;
|
|
Picture *pic= s->reordered_input_picture[i+1];
|
|
|
|
if(pic==NULL || pic->pict_type!=FF_B_TYPE) break;
|
|
|
|
b_pic= pic->data[0] + offset;
|
|
if(pic->type != FF_BUFFER_TYPE_SHARED)
|
|
b_pic+= INPLACE_OFFSET;
|
|
diff= s->dsp.sad[0](NULL, p_pic, b_pic, s->linesize, 16);
|
|
if(diff>s->qscale*70){ //FIXME check that 70 is optimal
|
|
s->mb_skipped=0;
|
|
break;
|
|
}
|
|
}
|
|
}else
|
|
s->mb_skipped=1;
|
|
|
|
if(s->mb_skipped==1){
|
|
/* skip macroblock */
|
|
put_bits(&s->pb, 1, 1);
|
|
|
|
if(interleaved_stats){
|
|
s->misc_bits++;
|
|
s->last_bits++;
|
|
}
|
|
s->skip_count++;
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
put_bits(&s->pb, 1, 0); /* mb coded */
|
|
cbpc = cbp & 3;
|
|
cbpy = cbp >> 2;
|
|
cbpy ^= 0xf;
|
|
if(s->mv_type==MV_TYPE_16X16){
|
|
if(s->dquant) cbpc+= 8;
|
|
put_bits(&s->pb,
|
|
ff_h263_inter_MCBPC_bits[cbpc],
|
|
ff_h263_inter_MCBPC_code[cbpc]);
|
|
|
|
put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
|
|
if(s->dquant)
|
|
put_bits(pb2, 2, dquant_code[s->dquant+2]);
|
|
|
|
if(!s->progressive_sequence){
|
|
if(cbp)
|
|
put_bits(pb2, 1, s->interlaced_dct);
|
|
put_bits(pb2, 1, 0);
|
|
}
|
|
|
|
if(interleaved_stats){
|
|
s->misc_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
/* motion vectors: 16x16 mode */
|
|
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
|
|
|
|
ff_h263_encode_motion_vector(s, motion_x - pred_x,
|
|
motion_y - pred_y, s->f_code);
|
|
}else if(s->mv_type==MV_TYPE_FIELD){
|
|
if(s->dquant) cbpc+= 8;
|
|
put_bits(&s->pb,
|
|
ff_h263_inter_MCBPC_bits[cbpc],
|
|
ff_h263_inter_MCBPC_code[cbpc]);
|
|
|
|
put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
|
|
if(s->dquant)
|
|
put_bits(pb2, 2, dquant_code[s->dquant+2]);
|
|
|
|
assert(!s->progressive_sequence);
|
|
if(cbp)
|
|
put_bits(pb2, 1, s->interlaced_dct);
|
|
put_bits(pb2, 1, 1);
|
|
|
|
if(interleaved_stats){
|
|
s->misc_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
/* motion vectors: 16x8 interlaced mode */
|
|
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
|
|
pred_y /=2;
|
|
|
|
put_bits(&s->pb, 1, s->field_select[0][0]);
|
|
put_bits(&s->pb, 1, s->field_select[0][1]);
|
|
|
|
ff_h263_encode_motion_vector(s, s->mv[0][0][0] - pred_x,
|
|
s->mv[0][0][1] - pred_y, s->f_code);
|
|
ff_h263_encode_motion_vector(s, s->mv[0][1][0] - pred_x,
|
|
s->mv[0][1][1] - pred_y, s->f_code);
|
|
}else{
|
|
assert(s->mv_type==MV_TYPE_8X8);
|
|
put_bits(&s->pb,
|
|
ff_h263_inter_MCBPC_bits[cbpc+16],
|
|
ff_h263_inter_MCBPC_code[cbpc+16]);
|
|
put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
|
|
|
|
if(!s->progressive_sequence){
|
|
if(cbp)
|
|
put_bits(pb2, 1, s->interlaced_dct);
|
|
}
|
|
|
|
if(interleaved_stats){
|
|
s->misc_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
for(i=0; i<4; i++){
|
|
/* motion vectors: 8x8 mode*/
|
|
h263_pred_motion(s, i, 0, &pred_x, &pred_y);
|
|
|
|
ff_h263_encode_motion_vector(s, s->current_picture.motion_val[0][ s->block_index[i] ][0] - pred_x,
|
|
s->current_picture.motion_val[0][ s->block_index[i] ][1] - pred_y, s->f_code);
|
|
}
|
|
}
|
|
|
|
if(interleaved_stats){
|
|
s->mv_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
mpeg4_encode_blocks(s, block, NULL, NULL, NULL, tex_pb);
|
|
|
|
if(interleaved_stats){
|
|
s->p_tex_bits+= get_bits_diff(s);
|
|
}
|
|
s->f_count++;
|
|
}
|
|
} else {
|
|
int cbp;
|
|
int dc_diff[6]; //dc values with the dc prediction subtracted
|
|
int dir[6]; //prediction direction
|
|
int zigzag_last_index[6];
|
|
uint8_t *scan_table[6];
|
|
int i;
|
|
|
|
for(i=0; i<6; i++){
|
|
dc_diff[i]= ff_mpeg4_pred_dc(s, i, block[i][0], &dir[i], 1);
|
|
}
|
|
|
|
if(s->flags & CODEC_FLAG_AC_PRED){
|
|
s->ac_pred= decide_ac_pred(s, block, dir, scan_table, zigzag_last_index);
|
|
}else{
|
|
for(i=0; i<6; i++)
|
|
scan_table[i]= s->intra_scantable.permutated;
|
|
}
|
|
|
|
/* compute cbp */
|
|
cbp = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
if (s->block_last_index[i] >= 1)
|
|
cbp |= 1 << (5 - i);
|
|
}
|
|
|
|
cbpc = cbp & 3;
|
|
if (s->pict_type == FF_I_TYPE) {
|
|
if(s->dquant) cbpc+=4;
|
|
put_bits(&s->pb,
|
|
ff_h263_intra_MCBPC_bits[cbpc],
|
|
ff_h263_intra_MCBPC_code[cbpc]);
|
|
} else {
|
|
if(s->dquant) cbpc+=8;
|
|
put_bits(&s->pb, 1, 0); /* mb coded */
|
|
put_bits(&s->pb,
|
|
ff_h263_inter_MCBPC_bits[cbpc + 4],
|
|
ff_h263_inter_MCBPC_code[cbpc + 4]);
|
|
}
|
|
put_bits(pb2, 1, s->ac_pred);
|
|
cbpy = cbp >> 2;
|
|
put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
|
|
if(s->dquant)
|
|
put_bits(dc_pb, 2, dquant_code[s->dquant+2]);
|
|
|
|
if(!s->progressive_sequence){
|
|
put_bits(dc_pb, 1, s->interlaced_dct);
|
|
}
|
|
|
|
if(interleaved_stats){
|
|
s->misc_bits+= get_bits_diff(s);
|
|
}
|
|
|
|
mpeg4_encode_blocks(s, block, dc_diff, scan_table, dc_pb, tex_pb);
|
|
|
|
if(interleaved_stats){
|
|
s->i_tex_bits+= get_bits_diff(s);
|
|
}
|
|
s->i_count++;
|
|
|
|
/* restore ac coeffs & last_index stuff if we messed them up with the prediction */
|
|
if(s->ac_pred)
|
|
restore_ac_coeffs(s, block, dir, scan_table, zigzag_last_index);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* add mpeg4 stuffing bits (01...1)
|
|
*/
|
|
void ff_mpeg4_stuffing(PutBitContext * pbc)
|
|
{
|
|
int length;
|
|
put_bits(pbc, 1, 0);
|
|
length= (-put_bits_count(pbc))&7;
|
|
if(length) put_bits(pbc, length, (1<<length)-1);
|
|
}
|
|
|
|
/* must be called before writing the header */
|
|
void ff_set_mpeg4_time(MpegEncContext * s){
|
|
if(s->pict_type==FF_B_TYPE){
|
|
ff_mpeg4_init_direct_mv(s);
|
|
}else{
|
|
s->last_time_base= s->time_base;
|
|
s->time_base= s->time/s->avctx->time_base.den;
|
|
}
|
|
}
|
|
|
|
static void mpeg4_encode_gop_header(MpegEncContext * s){
|
|
int hours, minutes, seconds;
|
|
int64_t time;
|
|
|
|
put_bits(&s->pb, 16, 0);
|
|
put_bits(&s->pb, 16, GOP_STARTCODE);
|
|
|
|
time= s->current_picture_ptr->pts;
|
|
if(s->reordered_input_picture[1])
|
|
time= FFMIN(time, s->reordered_input_picture[1]->pts);
|
|
time= time*s->avctx->time_base.num;
|
|
|
|
seconds= time/s->avctx->time_base.den;
|
|
minutes= seconds/60; seconds %= 60;
|
|
hours= minutes/60; minutes %= 60;
|
|
hours%=24;
|
|
|
|
put_bits(&s->pb, 5, hours);
|
|
put_bits(&s->pb, 6, minutes);
|
|
put_bits(&s->pb, 1, 1);
|
|
put_bits(&s->pb, 6, seconds);
|
|
|
|
put_bits(&s->pb, 1, !!(s->flags&CODEC_FLAG_CLOSED_GOP));
|
|
put_bits(&s->pb, 1, 0); //broken link == NO
|
|
|
|
s->last_time_base= time / s->avctx->time_base.den;
|
|
|
|
ff_mpeg4_stuffing(&s->pb);
|
|
}
|
|
|
|
static void mpeg4_encode_visual_object_header(MpegEncContext * s){
|
|
int profile_and_level_indication;
|
|
int vo_ver_id;
|
|
|
|
if(s->avctx->profile != FF_PROFILE_UNKNOWN){
|
|
profile_and_level_indication = s->avctx->profile << 4;
|
|
}else if(s->max_b_frames || s->quarter_sample){
|
|
profile_and_level_indication= 0xF0; // adv simple
|
|
}else{
|
|
profile_and_level_indication= 0x00; // simple
|
|
}
|
|
|
|
if(s->avctx->level != FF_LEVEL_UNKNOWN){
|
|
profile_and_level_indication |= s->avctx->level;
|
|
}else{
|
|
profile_and_level_indication |= 1; //level 1
|
|
}
|
|
|
|
if(profile_and_level_indication>>4 == 0xF){
|
|
vo_ver_id= 5;
|
|
}else{
|
|
vo_ver_id= 1;
|
|
}
|
|
|
|
//FIXME levels
|
|
|
|
put_bits(&s->pb, 16, 0);
|
|
put_bits(&s->pb, 16, VOS_STARTCODE);
|
|
|
|
put_bits(&s->pb, 8, profile_and_level_indication);
|
|
|
|
put_bits(&s->pb, 16, 0);
|
|
put_bits(&s->pb, 16, VISUAL_OBJ_STARTCODE);
|
|
|
|
put_bits(&s->pb, 1, 1);
|
|
put_bits(&s->pb, 4, vo_ver_id);
|
|
put_bits(&s->pb, 3, 1); //priority
|
|
|
|
put_bits(&s->pb, 4, 1); //visual obj type== video obj
|
|
|
|
put_bits(&s->pb, 1, 0); //video signal type == no clue //FIXME
|
|
|
|
ff_mpeg4_stuffing(&s->pb);
|
|
}
|
|
|
|
static void mpeg4_encode_vol_header(MpegEncContext * s, int vo_number, int vol_number)
|
|
{
|
|
int vo_ver_id;
|
|
|
|
if (!CONFIG_MPEG4_ENCODER) return;
|
|
|
|
if(s->max_b_frames || s->quarter_sample){
|
|
vo_ver_id= 5;
|
|
s->vo_type= ADV_SIMPLE_VO_TYPE;
|
|
}else{
|
|
vo_ver_id= 1;
|
|
s->vo_type= SIMPLE_VO_TYPE;
|
|
}
|
|
|
|
put_bits(&s->pb, 16, 0);
|
|
put_bits(&s->pb, 16, 0x100 + vo_number); /* video obj */
|
|
put_bits(&s->pb, 16, 0);
|
|
put_bits(&s->pb, 16, 0x120 + vol_number); /* video obj layer */
|
|
|
|
put_bits(&s->pb, 1, 0); /* random access vol */
|
|
put_bits(&s->pb, 8, s->vo_type); /* video obj type indication */
|
|
if(s->workaround_bugs & FF_BUG_MS) {
|
|
put_bits(&s->pb, 1, 0); /* is obj layer id= no */
|
|
} else {
|
|
put_bits(&s->pb, 1, 1); /* is obj layer id= yes */
|
|
put_bits(&s->pb, 4, vo_ver_id); /* is obj layer ver id */
|
|
put_bits(&s->pb, 3, 1); /* is obj layer priority */
|
|
}
|
|
|
|
s->aspect_ratio_info= ff_h263_aspect_to_info(s->avctx->sample_aspect_ratio);
|
|
|
|
put_bits(&s->pb, 4, s->aspect_ratio_info);/* aspect ratio info */
|
|
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED){
|
|
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.num);
|
|
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.den);
|
|
}
|
|
|
|
if(s->workaround_bugs & FF_BUG_MS) { //
|
|
put_bits(&s->pb, 1, 0); /* vol control parameters= no @@@ */
|
|
} else {
|
|
put_bits(&s->pb, 1, 1); /* vol control parameters= yes */
|
|
put_bits(&s->pb, 2, 1); /* chroma format YUV 420/YV12 */
|
|
put_bits(&s->pb, 1, s->low_delay);
|
|
put_bits(&s->pb, 1, 0); /* vbv parameters= no */
|
|
}
|
|
|
|
put_bits(&s->pb, 2, RECT_SHAPE); /* vol shape= rectangle */
|
|
put_bits(&s->pb, 1, 1); /* marker bit */
|
|
|
|
put_bits(&s->pb, 16, s->avctx->time_base.den);
|
|
if (s->time_increment_bits < 1)
|
|
s->time_increment_bits = 1;
|
|
put_bits(&s->pb, 1, 1); /* marker bit */
|
|
put_bits(&s->pb, 1, 0); /* fixed vop rate=no */
|
|
put_bits(&s->pb, 1, 1); /* marker bit */
|
|
put_bits(&s->pb, 13, s->width); /* vol width */
|
|
put_bits(&s->pb, 1, 1); /* marker bit */
|
|
put_bits(&s->pb, 13, s->height); /* vol height */
|
|
put_bits(&s->pb, 1, 1); /* marker bit */
|
|
put_bits(&s->pb, 1, s->progressive_sequence ? 0 : 1);
|
|
put_bits(&s->pb, 1, 1); /* obmc disable */
|
|
if (vo_ver_id == 1) {
|
|
put_bits(&s->pb, 1, s->vol_sprite_usage); /* sprite enable */
|
|
}else{
|
|
put_bits(&s->pb, 2, s->vol_sprite_usage); /* sprite enable */
|
|
}
|
|
|
|
put_bits(&s->pb, 1, 0); /* not 8 bit == false */
|
|
put_bits(&s->pb, 1, s->mpeg_quant); /* quant type= (0=h263 style)*/
|
|
|
|
if(s->mpeg_quant){
|
|
ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
|
|
ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
|
|
}
|
|
|
|
if (vo_ver_id != 1)
|
|
put_bits(&s->pb, 1, s->quarter_sample);
|
|
put_bits(&s->pb, 1, 1); /* complexity estimation disable */
|
|
s->resync_marker= s->rtp_mode;
|
|
put_bits(&s->pb, 1, s->resync_marker ? 0 : 1);/* resync marker disable */
|
|
put_bits(&s->pb, 1, s->data_partitioning ? 1 : 0);
|
|
if(s->data_partitioning){
|
|
put_bits(&s->pb, 1, 0); /* no rvlc */
|
|
}
|
|
|
|
if (vo_ver_id != 1){
|
|
put_bits(&s->pb, 1, 0); /* newpred */
|
|
put_bits(&s->pb, 1, 0); /* reduced res vop */
|
|
}
|
|
put_bits(&s->pb, 1, 0); /* scalability */
|
|
|
|
ff_mpeg4_stuffing(&s->pb);
|
|
|
|
/* user data */
|
|
if(!(s->flags & CODEC_FLAG_BITEXACT)){
|
|
put_bits(&s->pb, 16, 0);
|
|
put_bits(&s->pb, 16, 0x1B2); /* user_data */
|
|
ff_put_string(&s->pb, LIBAVCODEC_IDENT, 0);
|
|
}
|
|
}
|
|
|
|
/* write mpeg4 VOP header */
|
|
void mpeg4_encode_picture_header(MpegEncContext * s, int picture_number)
|
|
{
|
|
int time_incr;
|
|
int time_div, time_mod;
|
|
|
|
if(s->pict_type==FF_I_TYPE){
|
|
if(!(s->flags&CODEC_FLAG_GLOBAL_HEADER)){
|
|
if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT) //HACK, the reference sw is buggy
|
|
mpeg4_encode_visual_object_header(s);
|
|
if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT || picture_number==0) //HACK, the reference sw is buggy
|
|
mpeg4_encode_vol_header(s, 0, 0);
|
|
}
|
|
if(!(s->workaround_bugs & FF_BUG_MS))
|
|
mpeg4_encode_gop_header(s);
|
|
}
|
|
|
|
s->partitioned_frame= s->data_partitioning && s->pict_type!=FF_B_TYPE;
|
|
|
|
put_bits(&s->pb, 16, 0); /* vop header */
|
|
put_bits(&s->pb, 16, VOP_STARTCODE); /* vop header */
|
|
put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */
|
|
|
|
assert(s->time>=0);
|
|
time_div= s->time/s->avctx->time_base.den;
|
|
time_mod= s->time%s->avctx->time_base.den;
|
|
time_incr= time_div - s->last_time_base;
|
|
assert(time_incr >= 0);
|
|
while(time_incr--)
|
|
put_bits(&s->pb, 1, 1);
|
|
|
|
put_bits(&s->pb, 1, 0);
|
|
|
|
put_bits(&s->pb, 1, 1); /* marker */
|
|
put_bits(&s->pb, s->time_increment_bits, time_mod); /* time increment */
|
|
put_bits(&s->pb, 1, 1); /* marker */
|
|
put_bits(&s->pb, 1, 1); /* vop coded */
|
|
if ( s->pict_type == FF_P_TYPE
|
|
|| (s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE)) {
|
|
put_bits(&s->pb, 1, s->no_rounding); /* rounding type */
|
|
}
|
|
put_bits(&s->pb, 3, 0); /* intra dc VLC threshold */
|
|
if(!s->progressive_sequence){
|
|
put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first);
|
|
put_bits(&s->pb, 1, s->alternate_scan);
|
|
}
|
|
//FIXME sprite stuff
|
|
|
|
put_bits(&s->pb, 5, s->qscale);
|
|
|
|
if (s->pict_type != FF_I_TYPE)
|
|
put_bits(&s->pb, 3, s->f_code); /* fcode_for */
|
|
if (s->pict_type == FF_B_TYPE)
|
|
put_bits(&s->pb, 3, s->b_code); /* fcode_back */
|
|
}
|
|
|
|
|
|
static void init_uni_dc_tab(void)
|
|
{
|
|
int level, uni_code, uni_len;
|
|
|
|
for(level=-256; level<256; level++){
|
|
int size, v, l;
|
|
/* find number of bits */
|
|
size = 0;
|
|
v = abs(level);
|
|
while (v) {
|
|
v >>= 1;
|
|
size++;
|
|
}
|
|
|
|
if (level < 0)
|
|
l= (-level) ^ ((1 << size) - 1);
|
|
else
|
|
l= level;
|
|
|
|
/* luminance */
|
|
uni_code= ff_mpeg4_DCtab_lum[size][0];
|
|
uni_len = ff_mpeg4_DCtab_lum[size][1];
|
|
|
|
if (size > 0) {
|
|
uni_code<<=size; uni_code|=l;
|
|
uni_len+=size;
|
|
if (size > 8){
|
|
uni_code<<=1; uni_code|=1;
|
|
uni_len++;
|
|
}
|
|
}
|
|
uni_DCtab_lum_bits[level+256]= uni_code;
|
|
uni_DCtab_lum_len [level+256]= uni_len;
|
|
|
|
/* chrominance */
|
|
uni_code= ff_mpeg4_DCtab_chrom[size][0];
|
|
uni_len = ff_mpeg4_DCtab_chrom[size][1];
|
|
|
|
if (size > 0) {
|
|
uni_code<<=size; uni_code|=l;
|
|
uni_len+=size;
|
|
if (size > 8){
|
|
uni_code<<=1; uni_code|=1;
|
|
uni_len++;
|
|
}
|
|
}
|
|
uni_DCtab_chrom_bits[level+256]= uni_code;
|
|
uni_DCtab_chrom_len [level+256]= uni_len;
|
|
|
|
}
|
|
}
|
|
|
|
static void init_uni_mpeg4_rl_tab(RLTable *rl, uint32_t *bits_tab, uint8_t *len_tab){
|
|
int slevel, run, last;
|
|
|
|
assert(MAX_LEVEL >= 64);
|
|
assert(MAX_RUN >= 63);
|
|
|
|
for(slevel=-64; slevel<64; slevel++){
|
|
if(slevel==0) continue;
|
|
for(run=0; run<64; run++){
|
|
for(last=0; last<=1; last++){
|
|
const int index= UNI_MPEG4_ENC_INDEX(last, run, slevel+64);
|
|
int level= slevel < 0 ? -slevel : slevel;
|
|
int sign= slevel < 0 ? 1 : 0;
|
|
int bits, len, code;
|
|
int level1, run1;
|
|
|
|
len_tab[index]= 100;
|
|
|
|
/* ESC0 */
|
|
code= get_rl_index(rl, last, run, level);
|
|
bits= rl->table_vlc[code][0];
|
|
len= rl->table_vlc[code][1];
|
|
bits=bits*2+sign; len++;
|
|
|
|
if(code!=rl->n && len < len_tab[index]){
|
|
bits_tab[index]= bits;
|
|
len_tab [index]= len;
|
|
}
|
|
/* ESC1 */
|
|
bits= rl->table_vlc[rl->n][0];
|
|
len= rl->table_vlc[rl->n][1];
|
|
bits=bits*2; len++; //esc1
|
|
level1= level - rl->max_level[last][run];
|
|
if(level1>0){
|
|
code= get_rl_index(rl, last, run, level1);
|
|
bits<<= rl->table_vlc[code][1];
|
|
len += rl->table_vlc[code][1];
|
|
bits += rl->table_vlc[code][0];
|
|
bits=bits*2+sign; len++;
|
|
|
|
if(code!=rl->n && len < len_tab[index]){
|
|
bits_tab[index]= bits;
|
|
len_tab [index]= len;
|
|
}
|
|
}
|
|
/* ESC2 */
|
|
bits= rl->table_vlc[rl->n][0];
|
|
len= rl->table_vlc[rl->n][1];
|
|
bits=bits*4+2; len+=2; //esc2
|
|
run1 = run - rl->max_run[last][level] - 1;
|
|
if(run1>=0){
|
|
code= get_rl_index(rl, last, run1, level);
|
|
bits<<= rl->table_vlc[code][1];
|
|
len += rl->table_vlc[code][1];
|
|
bits += rl->table_vlc[code][0];
|
|
bits=bits*2+sign; len++;
|
|
|
|
if(code!=rl->n && len < len_tab[index]){
|
|
bits_tab[index]= bits;
|
|
len_tab [index]= len;
|
|
}
|
|
}
|
|
/* ESC3 */
|
|
bits= rl->table_vlc[rl->n][0];
|
|
len = rl->table_vlc[rl->n][1];
|
|
bits=bits*4+3; len+=2; //esc3
|
|
bits=bits*2+last; len++;
|
|
bits=bits*64+run; len+=6;
|
|
bits=bits*2+1; len++; //marker
|
|
bits=bits*4096+(slevel&0xfff); len+=12;
|
|
bits=bits*2+1; len++; //marker
|
|
|
|
if(len < len_tab[index]){
|
|
bits_tab[index]= bits;
|
|
len_tab [index]= len;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static av_cold int encode_init(AVCodecContext *avctx)
|
|
{
|
|
MpegEncContext *s = avctx->priv_data;
|
|
int ret;
|
|
static int done = 0;
|
|
|
|
if((ret=MPV_encode_init(avctx)) < 0)
|
|
return ret;
|
|
|
|
if (!done) {
|
|
done = 1;
|
|
|
|
init_uni_dc_tab();
|
|
|
|
init_rl(&ff_mpeg4_rl_intra, ff_mpeg4_static_rl_table_store[0]);
|
|
|
|
init_uni_mpeg4_rl_tab(&ff_mpeg4_rl_intra, uni_mpeg4_intra_rl_bits, uni_mpeg4_intra_rl_len);
|
|
init_uni_mpeg4_rl_tab(&ff_h263_rl_inter, uni_mpeg4_inter_rl_bits, uni_mpeg4_inter_rl_len);
|
|
}
|
|
|
|
s->min_qcoeff= -2048;
|
|
s->max_qcoeff= 2047;
|
|
s->intra_ac_vlc_length = uni_mpeg4_intra_rl_len;
|
|
s->intra_ac_vlc_last_length= uni_mpeg4_intra_rl_len + 128*64;
|
|
s->inter_ac_vlc_length = uni_mpeg4_inter_rl_len;
|
|
s->inter_ac_vlc_last_length= uni_mpeg4_inter_rl_len + 128*64;
|
|
s->luma_dc_vlc_length= uni_DCtab_lum_len;
|
|
s->chroma_dc_vlc_length= uni_DCtab_chrom_len;
|
|
s->ac_esc_length= 7+2+1+6+1+12+1;
|
|
s->y_dc_scale_table= ff_mpeg4_y_dc_scale_table;
|
|
s->c_dc_scale_table= ff_mpeg4_c_dc_scale_table;
|
|
|
|
if(s->flags & CODEC_FLAG_GLOBAL_HEADER){
|
|
|
|
s->avctx->extradata= av_malloc(1024);
|
|
init_put_bits(&s->pb, s->avctx->extradata, 1024);
|
|
|
|
if(!(s->workaround_bugs & FF_BUG_MS))
|
|
mpeg4_encode_visual_object_header(s);
|
|
mpeg4_encode_vol_header(s, 0, 0);
|
|
|
|
// ff_mpeg4_stuffing(&s->pb); ?
|
|
flush_put_bits(&s->pb);
|
|
s->avctx->extradata_size= (put_bits_count(&s->pb)+7)>>3;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void ff_mpeg4_init_partitions(MpegEncContext *s)
|
|
{
|
|
uint8_t *start= put_bits_ptr(&s->pb);
|
|
uint8_t *end= s->pb.buf_end;
|
|
int size= end - start;
|
|
int pb_size = (((intptr_t)start + size/3)&(~3)) - (intptr_t)start;
|
|
int tex_size= (size - 2*pb_size)&(~3);
|
|
|
|
set_put_bits_buffer_size(&s->pb, pb_size);
|
|
init_put_bits(&s->tex_pb, start + pb_size , tex_size);
|
|
init_put_bits(&s->pb2 , start + pb_size + tex_size, pb_size);
|
|
}
|
|
|
|
void ff_mpeg4_merge_partitions(MpegEncContext *s)
|
|
{
|
|
const int pb2_len = put_bits_count(&s->pb2 );
|
|
const int tex_pb_len= put_bits_count(&s->tex_pb);
|
|
const int bits= put_bits_count(&s->pb);
|
|
|
|
if(s->pict_type==FF_I_TYPE){
|
|
put_bits(&s->pb, 19, DC_MARKER);
|
|
s->misc_bits+=19 + pb2_len + bits - s->last_bits;
|
|
s->i_tex_bits+= tex_pb_len;
|
|
}else{
|
|
put_bits(&s->pb, 17, MOTION_MARKER);
|
|
s->misc_bits+=17 + pb2_len;
|
|
s->mv_bits+= bits - s->last_bits;
|
|
s->p_tex_bits+= tex_pb_len;
|
|
}
|
|
|
|
flush_put_bits(&s->pb2);
|
|
flush_put_bits(&s->tex_pb);
|
|
|
|
set_put_bits_buffer_size(&s->pb, s->pb2.buf_end - s->pb.buf);
|
|
ff_copy_bits(&s->pb, s->pb2.buf , pb2_len);
|
|
ff_copy_bits(&s->pb, s->tex_pb.buf, tex_pb_len);
|
|
s->last_bits= put_bits_count(&s->pb);
|
|
}
|
|
|
|
|
|
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s)
|
|
{
|
|
int mb_num_bits= av_log2(s->mb_num - 1) + 1;
|
|
|
|
put_bits(&s->pb, ff_mpeg4_get_video_packet_prefix_length(s), 0);
|
|
put_bits(&s->pb, 1, 1);
|
|
|
|
put_bits(&s->pb, mb_num_bits, s->mb_x + s->mb_y*s->mb_width);
|
|
put_bits(&s->pb, s->quant_precision, s->qscale);
|
|
put_bits(&s->pb, 1, 0); /* no HEC */
|
|
}
|
|
|
|
AVCodec mpeg4_encoder = {
|
|
"mpeg4",
|
|
AVMEDIA_TYPE_VIDEO,
|
|
CODEC_ID_MPEG4,
|
|
sizeof(MpegEncContext),
|
|
encode_init,
|
|
MPV_encode_picture,
|
|
MPV_encode_end,
|
|
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
|
|
.capabilities= CODEC_CAP_DELAY,
|
|
.long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
|
|
};
|