github/mpv
1
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2025-01-20 21:07:29 +01:00
Code Releases Activity

Remove imported rational calculation code and use the original one from avutil.

Browse Source 
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24315 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
iive 2007-09-01 10:50:36 +00:00
parent ce81a2156b
commit e371194632
1 changed files with 11 additions and 83 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
libmpcodecs/ve_xvid4.c
View File

@ -56,6 +56,12 @@
#include "m_option.h"
#ifdef USE_LIBAVUTIL_SO
#include <ffmpeg/avutil.h>
#else
#include "avutil.h"
#endif
#define FINE (!0)
#define BAD (!FINE)
@ -95,84 +101,6 @@ typedef struct
unsigned int flags; ///< flags for allowed options/dxn note the definitions for PROFILE_S and PROFILE_AS
} profile_t;
// Code taken from Libavcodec and ve_lavc.c to handle Aspect Ratio calculation
typedef struct xvid_rational_s{
int num;
int den;
} XVIDRational;
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define ABS(a) ((a) >= 0 ? (a) : (-(a)))
static int64_t xvid_gcd(int64_t a, int64_t b){
if(b) return xvid_gcd(b, a%b);
else return a;
}
static int xvid_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max){
int exact=1, sign=0;
int64_t gcd;
assert(den != 0);
if(den < 0){
den= -den;
nom= -nom;
}
if(nom < 0){
nom= -nom;
sign= 1;
}
gcd = xvid_gcd(nom, den);
nom /= gcd;
den /= gcd;
if(nom > max || den > max){
XVIDRational a0={0,1}, a1={1,0};
exact=0;
for(;;){
int64_t x= nom / den;
int64_t a2n= x*a1.num + a0.num;
int64_t a2d= x*a1.den + a0.den;
if(a2n > max || a2d > max) break;
nom %= den;
a0= a1;
a1= (XVIDRational){a2n, a2d};
if(nom==0) break;
x= nom; nom=den; den=x;
}
nom= a1.num;
den= a1.den;
}
assert(xvid_gcd(nom, den) == 1);
if(sign) nom= -nom;
*dst_nom = nom;
*dst_den = den;
return exact;
}
static XVIDRational xvid_d2q(double d, int max){
XVIDRational a;
int exponent= MAX( (int)(log(ABS(d) + 1e-20)/log(2)), 0);
int64_t den= 1LL << (61 - exponent);
xvid_reduce(&a.num, &a.den, (int64_t)(d * den + 0.5), den, max);
return a;
}
// Code taken from XviD VfW source for profile support
/* default vbv_occupancy is (64/170)*vbv_buffer_size */
@ -734,7 +662,7 @@ static int dispatch_settings(xvid_mplayer_module_t *mod)
xvid_enc_frame_t *frame = &mod->frame;
xvid_plugin_single_t *onepass = &mod->onepass;
xvid_plugin_2pass2_t *pass2 = &mod->pass2;
XVIDRational ar;
AVRational ar;
const int motion_presets[7] =
{
@ -977,9 +905,9 @@ static int dispatch_settings(xvid_mplayer_module_t *mod)
if( !(selected_profile->flags & PROFILE_DXN) )
{
if(xvidenc_dar_aspect > 0)
ar = xvid_d2q(xvidenc_dar_aspect * mod->mux->bih->biHeight / mod->mux->bih->biWidth, 255);
ar = av_d2q(xvidenc_dar_aspect * mod->mux->bih->biHeight / mod->mux->bih->biWidth, 255);
else if(xvidenc_autoaspect)
ar = xvid_d2q((float)mod->d_width / mod->d_height * mod->mux->bih->biHeight / mod->mux->bih->biWidth, 255);
ar = av_d2q((float)mod->d_width / mod->d_height * mod->mux->bih->biHeight / mod->mux->bih->biWidth, 255);
else ar.num = ar.den = 0;
if(ar.den != 0) {
@ -1164,8 +1092,8 @@ static int set_create_struct(xvid_mplayer_module_t *mod)
/* Quantizer mode uses the same plugin, we have only to define
* a constant quantizer zone beginning at frame 0 */
if(pass == MODE_QUANT) {
XVIDRational squant;
squant = xvid_d2q(xvidenc_quantizer,128);
AVRational squant;
squant = av_d2q(xvidenc_quantizer,128);
create->zones[create->num_zones].mode = XVID_ZONE_QUANT;
create->zones[create->num_zones].frame = 0;