more flexible frame skip decission

Originally committed as revision 3743 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-12-08 18:02:56 +00:00
parent bbf18b21b7
commit 0fd6aea1f1
5 changed files with 61 additions and 20 deletions

View File

@ -195,6 +195,8 @@ static int subpel_quality= 8;
static int lowres= 0;
static int frame_skip_threshold= 0;
static int frame_skip_factor= 0;
static int frame_skip_exp= 0;
static int frame_skip_cmp= FF_CMP_DCTMAX;
extern int loop_input; /* currently a hack */
static int gop_size = 12;
@ -3227,6 +3229,8 @@ static void opt_output_file(const char *filename)
video_enc->me_subpel_quality= subpel_quality;
video_enc->frame_skip_threshold= frame_skip_threshold;
video_enc->frame_skip_factor= frame_skip_factor;
video_enc->frame_skip_exp= frame_skip_exp;
video_enc->frame_skip_cmp= frame_skip_cmp;
if(packet_size){
video_enc->rtp_mode= 1;
@ -3955,6 +3959,8 @@ const OptionDef options[] = {
{ "vtag", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_tag}, "force video tag/fourcc", "fourcc/tag" },
{ "skip_threshold", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&frame_skip_threshold}, "frame skip threshold", "threshold" },
{ "skip_factor", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&frame_skip_factor}, "frame skip factor", "factor" },
{ "skip_exp", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&frame_skip_exp}, "frame skip exponent", "exponent" },
{ "skip_cmp", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&frame_skip_cmp}, "frame skip compare function", "compare function" },
/* audio options */
{ "ab", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_bitrate}, "set audio bitrate (in kbit/s)", "bitrate", },

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@ -17,7 +17,7 @@ extern "C" {
#define FFMPEG_VERSION_INT 0x000409
#define FFMPEG_VERSION "0.4.9-pre1"
#define LIBAVCODEC_BUILD 4735
#define LIBAVCODEC_BUILD 4736
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
#define LIBAVCODEC_VERSION FFMPEG_VERSION
@ -1293,6 +1293,7 @@ typedef struct AVCodecContext {
#define FF_CMP_NSSE 10
#define FF_CMP_W53 11
#define FF_CMP_W97 12
#define FF_CMP_DCTMAX 13
#define FF_CMP_CHROMA 256
/**
@ -1703,6 +1704,20 @@ typedef struct AVCodecContext {
* - decoding: unused
*/
int frame_skip_factor;
/**
* frame skip exponent
* - encoding: set by user
* - decoding: unused
*/
int frame_skip_exp;
/**
* frame skip comparission function
* - encoding: set by user.
* - decoding: unused
*/
int frame_skip_cmp;
} AVCodecContext;

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@ -2891,6 +2891,9 @@ void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type){
case FF_CMP_DCT:
cmp[i]= c->dct_sad[i];
break;
case FF_CMP_DCTMAX:
cmp[i]= c->dct_max[i];
break;
case FF_CMP_PSNR:
cmp[i]= c->quant_psnr[i];
break;
@ -3114,6 +3117,23 @@ static int dct_sad8x8_c(/*MpegEncContext*/ void *c, uint8_t *src1, uint8_t *src2
return sum;
}
static int dct_max8x8_c(/*MpegEncContext*/ void *c, uint8_t *src1, uint8_t *src2, int stride, int h){
MpegEncContext * const s= (MpegEncContext *)c;
uint64_t __align8 aligned_temp[sizeof(DCTELEM)*64/8];
DCTELEM * const temp= (DCTELEM*)aligned_temp;
int sum=0, i;
assert(h==8);
s->dsp.diff_pixels(temp, src1, src2, stride);
s->dsp.fdct(temp);
for(i=0; i<64; i++)
sum= FFMAX(sum, ABS(temp[i]));
return sum;
}
void simple_idct(DCTELEM *block); //FIXME
static int quant_psnr8x8_c(/*MpegEncContext*/ void *c, uint8_t *src1, uint8_t *src2, int stride, int h){
@ -3343,6 +3363,7 @@ static int vsse16_c(/*MpegEncContext*/ void *c, uint8_t *s1, uint8_t *s2, int st
WARPER8_16_SQ(hadamard8_diff8x8_c, hadamard8_diff16_c)
WARPER8_16_SQ(hadamard8_intra8x8_c, hadamard8_intra16_c)
WARPER8_16_SQ(dct_sad8x8_c, dct_sad16_c)
WARPER8_16_SQ(dct_max8x8_c, dct_max16_c)
WARPER8_16_SQ(quant_psnr8x8_c, quant_psnr16_c)
WARPER8_16_SQ(rd8x8_c, rd16_c)
WARPER8_16_SQ(bit8x8_c, bit16_c)
@ -3599,6 +3620,7 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
SET_CMP_FUNC(hadamard8_diff)
c->hadamard8_diff[4]= hadamard8_intra16_c;
SET_CMP_FUNC(dct_sad)
SET_CMP_FUNC(dct_max)
c->sad[0]= pix_abs16_c;
c->sad[1]= pix_abs8_c;
c->sse[0]= sse16_c;

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@ -172,12 +172,14 @@ typedef struct DSPContext {
me_cmp_func nsse[5];
me_cmp_func w53[5];
me_cmp_func w97[5];
me_cmp_func dct_max[5];
me_cmp_func me_pre_cmp[5];
me_cmp_func me_cmp[5];
me_cmp_func me_sub_cmp[5];
me_cmp_func mb_cmp[5];
me_cmp_func ildct_cmp[5]; //only width 16 used
me_cmp_func frame_skip_cmp[5]; //only width 8 used
/**
* Halfpel motion compensation with rounding (a+b+1)>>1.

View File

@ -1205,6 +1205,7 @@ int MPV_encode_init(AVCodecContext *avctx)
s->quant_precision=5;
ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
#ifdef CONFIG_ENCODERS
#ifdef CONFIG_RISKY
@ -2018,40 +2019,35 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
return 0;
}
static inline int block_max(DCTELEM *block){
int i, max;
max=0;
for(i=0; i<64; i++){
int v= ABS(block[i]);
if(v>max) max= v;
}
return max;
}
static int skip_check(MpegEncContext *s, Picture *p, Picture *ref){
int x, y, plane;
int score=0;
int64_t score64=0;
int64_t threshold;
for(plane=0; plane<3; plane++){
const int stride= p->linesize[plane];
const int bw= plane ? 1 : 2;
for(y=0; y<s->mb_height*bw; y++){
for(x=0; x<s->mb_width*bw; x++){
int v;
int v= s->dsp.frame_skip_cmp[1](s, p->data[plane] + 8*(x + y*stride), ref->data[plane] + 8*(x + y*stride), stride, 8);
s->dsp.diff_pixels(s->block[0], p->data[plane] + 8*(x + y*stride), ref->data[plane] + 8*(x + y*stride), stride);
v= block_max(s->block[0]);
if(v>score)
score=v;
switch(s->avctx->frame_skip_exp){
case 0: score= FFMAX(score, v); break;
case 1: score+= ABS(v);break;
case 2: score+= v*v;break;
case 3: score64+= ABS(v*v*(int64_t)v);break;
case 4: score64+= v*v*(int64_t)(v*v);break;
}
}
}
}
if(score) score64= score;
if(score < s->avctx->frame_skip_threshold)
if(score64 < s->avctx->frame_skip_threshold)
return 1;
if(score < ((s->avctx->frame_skip_factor * s->lambda)>>8))
if(score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda)>>8))
return 1;
return 0;
}