Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

adaptive quantization (lumi/temporal & spatial complexity masking)

Browse Source 
Originally committed as revision 964 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Michael Niedermayer 23 years ago
parent d46aba2642
commit c5d309f2d5
6 changed files with 267 additions and 31 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 45
      libavcodec/avcodec.h
  2. 86
      libavcodec/h263.c
  3. 1
      libavcodec/motion_est.c
  4. 51
      libavcodec/mpegvideo.c
  5. 12
      libavcodec/mpegvideo.h
  6. 103
      libavcodec/ratecontrol.c

45
libavcodec/avcodec.h
Unescape View File

@ -5,8 +5,8 @@
#define LIBAVCODEC_VERSION_INT 0x000406
#define LIBAVCODEC_VERSION "0.4.6"
#define LIBAVCODEC_BUILD 4624
#define LIBAVCODEC_BUILD_STR "4624"
#define LIBAVCODEC_BUILD 4625
#define LIBAVCODEC_BUILD_STR "4625"
enum CodecID {
CODEC_ID_NONE,
@ -123,6 +123,8 @@ static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
#define CODEC_FLAG_DR1 0x8000 /* direct renderig type 1 (store internal frames in external buffers) */
#define CODEC_FLAG_NOT_TRUNCATED 0x00010000 /* input bitstream is not truncated, except before a startcode
allows the last part of a frame to be decoded earlier */
#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
/* codec capabilities */
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
@ -174,8 +176,8 @@ typedef struct AVCodecContext {
* some codecs need / can use extra-data like huffman tables
* mjpeg: huffman tables
* rv10: additional flags
* encoding: set/allocated/freed by user.
* decoding: set/allocated/freed by lavc. (can be NULL)
* encoding: set/allocated/freed by lavc.
* decoding: set/allocated/freed by user.
*/
void *extradata;
int extradata_size;
@ -285,8 +287,13 @@ typedef struct AVCodecContext {
uint8_t *mbskip_table;
/* encoding parameters */
/**
* quality (between 1 (good) and 31 (bad))
* encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
* decoding: set by lavc
*/
int quality; /* quality of the previous encoded frame
(between 1 (good) and 31 (bad))
this is allso used to set the quality in vbr mode
and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
@ -632,6 +639,34 @@ typedef struct AVCodecContext {
* decoding; set by lavc
*/
long long int pts;
/**
* luminance masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float lumi_masking;
/**
* temporary complexity masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float temporal_cplx_masking;
/**
* spatial complexity masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float spatial_cplx_masking;
/**
* p block masking (0-> disabled)
* encoding: set by user
* decoding: unused
*/
float p_masking;
//FIXME this should be reordered after kabis API is finished ...
//TODO kill kabi

86
libavcodec/h263.c
Unescape View File

@ -31,11 +31,17 @@
#include "h263data.h"
#include "mpeg4data.h"
//#undef NDEBUG
//#include <assert.h>
//rounded divison & shift
#define RSHIFT(a,b) ((a) > 0 ? ((a) + (1<<((b)-1)))>>(b) : ((a) + (1<<((b)-1))-1)>>(b))
#if 1
#define PRINT_MB_TYPE(a) {}
//#define PRINT_MB_TYPE(a) printf(a)
#else
#define PRINT_MB_TYPE(a) printf(a)
#endif
#define INTRA_MCBPC_VLC_BITS 6
#define INTER_MCBPC_VLC_BITS 6
@ -298,6 +304,54 @@ static inline int decide_ac_pred(MpegEncContext * s, DCTELEM block[6][64], int d
return score0 > score1 ? 1 : 0;
}
void ff_clean_mpeg4_qscales(MpegEncContext *s){
int i;
/* more braindead iso mpeg mess */
for(i=1; i<s->mb_num; i++){
if(s->qscale_table[i] - s->qscale_table[i-1] >2)
s->qscale_table[i]= s->qscale_table[i-1]+2;
}
for(i=s->mb_num-2; i>=0; i--){
if(s->qscale_table[i] - s->qscale_table[i+1] >2)
s->qscale_table[i]= s->qscale_table[i+1]+2;
}
for(i=1; i<s->mb_num; i++){
if(s->qscale_table[i] != s->qscale_table[i-1] && (s->mb_type[i]&MB_TYPE_INTER4V)){
s->mb_type[i]&= ~MB_TYPE_INTER4V;
s->mb_type[i]|= MB_TYPE_INTER;
}
}
if(s->pict_type== B_TYPE){
int odd=0;
/* ok, come on, this isnt funny anymore, theres more code for handling this mpeg4 mess than
for the actual adaptive quantization */
for(i=0; i<s->mb_num; i++){
odd += s->qscale_table[i]&1;
}
if(2*odd > s->mb_num) odd=1;
else odd=0;
for(i=0; i<s->mb_num; i++){
if((s->qscale_table[i]&1) != odd)
s->qscale_table[i]++;
if(s->qscale_table[i] > 31)
s->qscale_table[i]= 31;
}
for(i=1; i<s->mb_num; i++){
if(s->qscale_table[i] != s->qscale_table[i-1] && (s->mb_type[i]&MB_TYPE_DIRECT)){
s->mb_type[i]&= ~MB_TYPE_DIRECT;
s->mb_type[i]|= MB_TYPE_BIDIR;
}
}
}
}
void mpeg4_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
@ -308,6 +362,7 @@ void mpeg4_encode_mb(MpegEncContext * s,
PutBitContext * const tex_pb = s->data_partitioning && s->pict_type!=B_TYPE ? &s->tex_pb : &s->pb;
PutBitContext * const dc_pb = s->data_partitioning && s->pict_type!=I_TYPE ? &s->pb2 : &s->pb;
const int interleaved_stats= (s->flags&CODEC_FLAG_PASS1) && !s->data_partitioning ? 1 : 0;
const int dquant_code[5]= {1,0,9,2,3};
// printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
if (!s->mb_intra) {
@ -328,20 +383,27 @@ void mpeg4_encode_mb(MpegEncContext * s,
s->last_mv[1][0][0]=
s->last_mv[1][0][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 skiped in the next P Frame */
if(s->mbskip_table[s->mb_y * s->mb_width + s->mb_x]){
if(s->mbskip_table[s->mb_y * s->mb_width + 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; //doesnt matter
s->qscale -= s->dquant;
return;
}
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){
@ -356,8 +418,13 @@ void mpeg4_encode_mb(MpegEncContext * s,
put_bits(&s->pb, mb_type+1, 1); // this table is so simple that we dont need it :)
if(cbp) put_bits(&s->pb, 6, cbp);
if(cbp && mb_type)
put_bits(&s->pb, 1, 0); /* no q-scale change */
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(interleaved_stats){
bits= get_bit_count(&s->pb);
@ -421,7 +488,7 @@ void mpeg4_encode_mb(MpegEncContext * s,
s->last_bits=bits;
}
}else{ /* s->pict_type==B_TYPE */
if ((cbp | motion_x | motion_y) == 0 && s->mv_type==MV_TYPE_16X16) {
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 didnt they just compress the skip-mb bits instead of reusing them ?! */
if(s->max_b_frames>0){
@ -470,12 +537,16 @@ void mpeg4_encode_mb(MpegEncContext * s,
put_bits(&s->pb, 1, 0); /* mb coded */
if(s->mv_type==MV_TYPE_16X16){
cbpc = cbp & 3;
if(s->dquant) cbpc+= 8;
put_bits(&s->pb,
inter_MCBPC_bits[cbpc],
inter_MCBPC_code[cbpc]);
cbpy = cbp >> 2;
cbpy ^= 0xf;
put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(pb2, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
bits= get_bit_count(&s->pb);
@ -580,10 +651,12 @@ void mpeg4_encode_mb(MpegEncContext * s,
cbpc = cbp & 3;
if (s->pict_type == I_TYPE) {
if(s->dquant) cbpc+=4;
put_bits(&s->pb,
intra_MCBPC_bits[cbpc],
intra_MCBPC_code[cbpc]);
} else {
if(s->dquant) cbpc+=8;
put_bits(&s->pb, 1, 0); /* mb coded */
put_bits(&s->pb,
inter_MCBPC_bits[cbpc + 4],
@ -592,6 +665,8 @@ void mpeg4_encode_mb(MpegEncContext * s,
put_bits(pb2, 1, s->ac_pred);
cbpy = cbp >> 2;
put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(dc_pb, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
bits= get_bit_count(&s->pb);
@ -963,6 +1038,7 @@ static void h263_encode_motion(MpegEncContext * s, int val, int f_code)
} else if (val >= l) {
val -= m;
}
assert(val>=-l && val<l);
if (val >= 0) {
sign = 0;

1
libavcodec/motion_est.c
Unescape View File

@ -1142,6 +1142,7 @@ void ff_estimate_p_frame_motion(MpegEncContext * s,
//printf("%d %d %d %X %X %X\n", s->mb_width, mb_x, mb_y,(int)s, (int)s->mb_var, (int)s->mc_mb_var); fflush(stdout);
s->mb_var [s->mb_width * mb_y + mb_x] = varc;
s->mc_mb_var[s->mb_width * mb_y + mb_x] = vard;
s->mb_mean [s->mb_width * mb_y + mb_x] = (sum+7)>>4;
s->mb_var_sum += varc;
s->mc_mb_var_sum += vard;
//printf("E%d %d %d %X %X %X\n", s->mb_width, mb_x, mb_y,(int)s, (int)s->mb_var, (int)s->mc_mb_var); fflush(stdout);

51
libavcodec/mpegvideo.c
Unescape View File

@ -207,6 +207,7 @@ int MPV_common_init(MpegEncContext *s)
CHECKED_ALLOCZ(s->mb_var , s->mb_num * sizeof(INT16))
CHECKED_ALLOCZ(s->mc_mb_var, s->mb_num * sizeof(INT16))
CHECKED_ALLOCZ(s->mb_mean , s->mb_num * sizeof(INT8))
/* Allocate MV tables */
CHECKED_ALLOCZ(s->p_mv_table , mv_table_size * 2 * sizeof(INT16))
@ -329,6 +330,7 @@ void MPV_common_end(MpegEncContext *s)
av_freep(&s->mb_type);
av_freep(&s->mb_var);
av_freep(&s->mc_mb_var);
av_freep(&s->mb_mean);
av_freep(&s->p_mv_table);
av_freep(&s->b_forw_mv_table);
av_freep(&s->b_back_mv_table);
@ -442,6 +444,12 @@ int MPV_encode_init(AVCodecContext *avctx)
/* Fixed QSCALE */
s->fixed_qscale = (avctx->flags & CODEC_FLAG_QSCALE);
s->adaptive_quant= ( s->avctx->lumi_masking
|| s->avctx->temporal_cplx_masking
|| s->avctx->spatial_cplx_masking
|| s->avctx->p_masking)
&& !s->fixed_qscale;
switch(avctx->codec->id) {
case CODEC_ID_MPEG1VIDEO:
s->out_format = FMT_MPEG1;
@ -893,7 +901,8 @@ int MPV_encode_picture(AVCodecContext *avctx,
if (s->out_format == FMT_MJPEG)
mjpeg_picture_trailer(s);
avctx->quality = s->qscale;
if(!s->fixed_qscale)
avctx->quality = s->qscale;
if(s->flags&CODEC_FLAG_PASS1)
ff_write_pass1_stats(s);
@ -1753,6 +1762,24 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
}
#endif
for(i=0; i<6; i++) skip_dct[i]=0;
if(s->adaptive_quant){
s->dquant= s->qscale_table[mb_x + mb_y*s->mb_width] - s->qscale;
if(s->codec_id==CODEC_ID_MPEG4){
if (s->dquant> 2) s->dquant= 2;
else if(s->dquant<-2) s->dquant=-2;
if(!s->mb_intra){
assert(s->dquant==0 || s->mv_type!=MV_TYPE_8X8);
if(s->mv_dir&MV_DIRECT)
s->dquant=0;
}
}
s->qscale+= s->dquant;
s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
}
if (s->mb_intra) {
UINT8 *ptr;
@ -2080,6 +2107,8 @@ static void encode_picture(MpegEncContext *s, int picture_number)
ff_set_mpeg4_time(s, s->picture_number);
s->scene_change_score=0;
s->qscale= (int)(s->frame_qscale + 0.5); //FIXME qscale / ... stuff for ME ratedistoration
/* Estimate motion for every MB */
if(s->pict_type != I_TYPE){
@ -2125,7 +2154,8 @@ static void encode_picture(MpegEncContext *s, int picture_number)
sum= (sum+8)>>4;
varc = (pix_norm1(pix, s->linesize) - sum*sum + 500 + 128)>>8;
s->mb_var[s->mb_width * mb_y + mb_x] = varc;
s->mb_var [s->mb_width * mb_y + mb_x] = varc;
s->mb_mean[s->mb_width * mb_y + mb_x] = (sum+7)>>4;
s->mb_var_sum += varc;
}
}
@ -2154,12 +2184,19 @@ static void encode_picture(MpegEncContext *s, int picture_number)
ff_fix_long_b_mvs(s, s->b_bidir_back_mv_table, s->b_code, MB_TYPE_BIDIR);
}
//printf("f_code %d ///\n", s->f_code);
// printf("%d %d\n", s->avg_mb_var, s->mc_mb_var);
if (!s->fixed_qscale)
s->qscale = ff_rate_estimate_qscale(s);
if (s->fixed_qscale)
s->frame_qscale = s->avctx->quality;
else
s->frame_qscale = ff_rate_estimate_qscale(s);
if(s->adaptive_quant && s->codec_id==CODEC_ID_MPEG4)
ff_clean_mpeg4_qscales(s);
if(s->adaptive_quant)
s->qscale= s->qscale_table[0];
else
s->qscale= (int)(s->frame_qscale + 0.5);
if (s->out_format == FMT_MJPEG) {
/* for mjpeg, we do include qscale in the matrix */
s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];

12
libavcodec/mpegvideo.h
Unescape View File

@ -53,7 +53,7 @@ typedef struct Predictor{
typedef struct RateControlEntry{
int pict_type;
int qscale;
float qscale;
int mv_bits;
int i_tex_bits;
int p_tex_bits;
@ -188,6 +188,9 @@ typedef struct MpegEncContext {
int input_pict_type; /* pict_type prior to reordering of frames */
int force_type; /* 0= no force, otherwise I_TYPE, P_TYPE, ... */
int qscale; /* QP */
float frame_qscale; /* qscale from the frame level rc */
int adaptive_quant; /* use adaptive quantization */
int dquant; /* qscale difference to prev qscale */
int pict_type; /* I_TYPE, P_TYPE, B_TYPE, ... */
int last_pict_type;
int last_non_b_pict_type; /* used for mpeg4 gmc b-frames & ratecontrol */
@ -241,13 +244,14 @@ typedef struct MpegEncContext {
int hurry_up; /* when set to 1 during decoding, b frames will be skiped
when set to 2 idct/dequant will be skipped too */
/* macroblock layer */
int mb_x, mb_y;
int mb_incr;
int mb_intra;
UINT16 *mb_var; /* Table for MB variances */
UINT16 *mc_mb_var; /* Table for motion compensated MB variances */
UINT8 *mb_mean; /* Table for MB luminance */
UINT8 *mb_type; /* Table for MB type */
#define MB_TYPE_INTRA 0x01
#define MB_TYPE_INTER 0x02
@ -582,6 +586,7 @@ void ff_mpeg4_stuffing(PutBitContext * pbc);
void ff_mpeg4_init_partitions(MpegEncContext *s);
void ff_mpeg4_merge_partitions(MpegEncContext *s);
extern inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr);
void ff_clean_mpeg4_qscales(MpegEncContext *s);
/* rv10.c */
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
@ -611,8 +616,7 @@ void mjpeg_picture_trailer(MpegEncContext *s);
/* rate control */
int ff_rate_control_init(MpegEncContext *s);
int ff_rate_estimate_qscale(MpegEncContext *s);
int ff_rate_estimate_qscale_pass2(MpegEncContext *s);
float ff_rate_estimate_qscale(MpegEncContext *s);
void ff_write_pass1_stats(MpegEncContext *s);
void ff_rate_control_uninit(MpegEncContext *s);
double ff_eval(char *s, double *const_value, char **const_name,

103
libavcodec/ratecontrol.c
Unescape View File

@ -38,9 +38,9 @@ static int init_pass2(MpegEncContext *s);
static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num);
void ff_write_pass1_stats(MpegEncContext *s){
sprintf(s->avctx->stats_out, "in:%d out:%d type:%d q:%d itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d;\n",
sprintf(s->avctx->stats_out, "in:%d out:%d type:%d q:%f itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d;\n",
s->picture_number, s->input_picture_number - s->max_b_frames, s->pict_type,
s->qscale, s->i_tex_bits, s->p_tex_bits, s->mv_bits, s->misc_bits,
s->frame_qscale, s->i_tex_bits, s->p_tex_bits, s->mv_bits, s->misc_bits,
s->f_code, s->b_code, s->mc_mb_var_sum, s->mb_var_sum, s->i_count);
}
@ -105,7 +105,7 @@ int ff_rate_control_init(MpegEncContext *s)
assert(picture_number < rcc->num_entries);
rce= &rcc->entry[picture_number];
e+=sscanf(p, " in:%*d out:%*d type:%d q:%d itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d",
e+=sscanf(p, " in:%*d out:%*d type:%d q:%f itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d",
&rce->pict_type, &rce->qscale, &rce->i_tex_bits, &rce->p_tex_bits, &rce->mv_bits, &rce->misc_bits,
&rce->f_code, &rce->b_code, &rce->mc_mb_var_sum, &rce->mb_var_sum, &rce->i_count);
if(e!=12){
@ -433,7 +433,7 @@ static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q,
q= exp(q);
}
return q;
}
@ -462,10 +462,89 @@ static void update_predictor(Predictor *p, double q, double var, double size)
p->coeff+= new_coeff;
}
int ff_rate_estimate_qscale(MpegEncContext *s)
static void adaptive_quantization(MpegEncContext *s, double q){
int i;
const float lumi_masking= s->avctx->lumi_masking / (128.0*128.0);
const float temp_cplx_masking= s->avctx->temporal_cplx_masking;
const float spatial_cplx_masking = s->avctx->spatial_cplx_masking;
const float p_masking = s->avctx->p_masking;
float bits_sum= 0.0;
float cplx_sum= 0.0;
float cplx_tab[s->mb_num];
float bits_tab[s->mb_num];
const int qmin= 2; //s->avctx->mb_qmin;
const int qmax= 31; //s->avctx->mb_qmax;
for(i=0; i<s->mb_num; i++){
float temp_cplx= sqrt(s->mc_mb_var[i]);
float spat_cplx= sqrt(s->mb_var[i]);
const int lumi= s->mb_mean[i];
float bits, cplx, factor;
if(spat_cplx < q/3) spat_cplx= q/3; //FIXME finetune
if(temp_cplx < q/3) temp_cplx= q/3; //FIXME finetune
if((s->mb_type[i]&MB_TYPE_INTRA)){//FIXME hq mode
cplx= spat_cplx;
factor= 1.0 + p_masking;
}else{
cplx= temp_cplx;
factor= pow(temp_cplx, - temp_cplx_masking);
}
factor*=pow(spat_cplx, - spatial_cplx_masking);
factor*= (1.0 - (lumi-128)*(lumi-128)*lumi_masking);
if(factor<0.00001) factor= 0.00001;
bits= cplx*factor;
cplx_sum+= cplx;
bits_sum+= bits;
cplx_tab[i]= cplx;
bits_tab[i]= bits;
}
/* handle qmin/qmax cliping */
if(s->flags&CODEC_FLAG_NORMALIZE_AQP){
for(i=0; i<s->mb_num; i++){
float newq= q*cplx_tab[i]/bits_tab[i];
newq*= bits_sum/cplx_sum;
if (newq > qmax){
bits_sum -= bits_tab[i];
cplx_sum -= cplx_tab[i]*q/qmax;
}
else if(newq < qmin){
bits_sum -= bits_tab[i];
cplx_sum -= cplx_tab[i]*q/qmin;
}
}
}
for(i=0; i<s->mb_num; i++){
float newq= q*cplx_tab[i]/bits_tab[i];
int intq;
if(s->flags&CODEC_FLAG_NORMALIZE_AQP){
newq*= bits_sum/cplx_sum;
}
if(i && ABS(s->qscale_table[i-1] - newq)<0.75)
intq= s->qscale_table[i-1];
else
intq= (int)(newq + 0.5);
if (intq > qmax) intq= qmax;
else if(intq < qmin) intq= qmin;
//if(i%s->mb_width==0) printf("\n");
//printf("%2d%3d ", intq, ff_sqrt(s->mc_mb_var[i]));
s->qscale_table[i]= intq;
}
}
float ff_rate_estimate_qscale(MpegEncContext *s)
{
float q;
int qscale, qmin, qmax;
int qmin, qmax;
float br_compensation;
double diff;
double short_term_q;
@ -581,16 +660,20 @@ int ff_rate_estimate_qscale(MpegEncContext *s)
// printf("%f %d %d %d\n", q, picture_number, (int)wanted_bits, (int)s->total_bits);
//printf("%f %f %f\n", q, br_compensation, short_term_q);
qscale= (int)(q + 0.5);
//printf("q:%d diff:%d comp:%f st_q:%f last_size:%d type:%d\n", qscale, (int)diff, br_compensation,
// short_term_q, s->frame_bits, pict_type);
//printf("%d %d\n", s->bit_rate, (int)fps);
rcc->last_qscale= qscale;
if(s->adaptive_quant)
adaptive_quantization(s, q);
else
q= (int)(q + 0.5);
rcc->last_qscale= q;
rcc->last_mc_mb_var_sum= s->mc_mb_var_sum;
rcc->last_mb_var_sum= s->mb_var_sum;
return qscale;
return q;
}
//----------------------------------------------

Write Preview
Loading…
Cancel
Save