summaryrefslogtreecommitdiffstats
path: root/libswscale/utils.c
diff options
context:
space:
mode:
Diffstat (limited to 'libswscale/utils.c')
-rw-r--r--libswscale/utils.c1589
1 files changed, 0 insertions, 1589 deletions
diff --git a/libswscale/utils.c b/libswscale/utils.c
deleted file mode 100644
index 5409980eb1..0000000000
--- a/libswscale/utils.c
+++ /dev/null
@@ -1,1589 +0,0 @@
-/*
- * Copyright (C) 2001-2003 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 General Public License as published by
- * the Free Software Foundation; either version 2 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 General Public License for more details.
- *
- * You should have received a copy of the GNU 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
- *
- * the C code (not assembly, mmx, ...) of this file can be used
- * under the LGPL license too
- */
-
-#define _SVID_SOURCE //needed for MAP_ANONYMOUS
-#include <inttypes.h>
-#include <string.h>
-#include <math.h>
-#include <stdio.h>
-#include "config.h"
-#include <assert.h>
-#if HAVE_SYS_MMAN_H
-#include <sys/mman.h>
-#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
-#define MAP_ANONYMOUS MAP_ANON
-#endif
-#endif
-#if HAVE_VIRTUALALLOC
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#endif
-#include "swscale.h"
-#include "swscale_internal.h"
-#include "rgb2rgb.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/x86_cpu.h"
-#include "libavutil/avutil.h"
-#include "libavutil/bswap.h"
-#include "libavutil/pixdesc.h"
-
-unsigned swscale_version(void)
-{
- return LIBSWSCALE_VERSION_INT;
-}
-
-const char *swscale_configuration(void)
-{
- return FFMPEG_CONFIGURATION;
-}
-
-const char *swscale_license(void)
-{
-#define LICENSE_PREFIX "libswscale license: "
- return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
-}
-
-#define RET 0xC3 //near return opcode for x86
-
-#define isSupportedIn(x) ( \
- (x)==PIX_FMT_YUV420P \
- || (x)==PIX_FMT_YUVA420P \
- || (x)==PIX_FMT_YUYV422 \
- || (x)==PIX_FMT_UYVY422 \
- || (x)==PIX_FMT_RGB48BE \
- || (x)==PIX_FMT_RGB48LE \
- || (x)==PIX_FMT_RGB32 \
- || (x)==PIX_FMT_RGB32_1 \
- || (x)==PIX_FMT_BGR24 \
- || (x)==PIX_FMT_BGR565 \
- || (x)==PIX_FMT_BGR555 \
- || (x)==PIX_FMT_BGR32 \
- || (x)==PIX_FMT_BGR32_1 \
- || (x)==PIX_FMT_RGB24 \
- || (x)==PIX_FMT_RGB565 \
- || (x)==PIX_FMT_RGB555 \
- || (x)==PIX_FMT_GRAY8 \
- || (x)==PIX_FMT_YUV410P \
- || (x)==PIX_FMT_YUV440P \
- || (x)==PIX_FMT_NV12 \
- || (x)==PIX_FMT_NV21 \
- || (x)==PIX_FMT_GRAY16BE \
- || (x)==PIX_FMT_GRAY16LE \
- || (x)==PIX_FMT_YUV444P \
- || (x)==PIX_FMT_YUV422P \
- || (x)==PIX_FMT_YUV411P \
- || (x)==PIX_FMT_YUVJ420P \
- || (x)==PIX_FMT_YUVJ422P \
- || (x)==PIX_FMT_YUVJ440P \
- || (x)==PIX_FMT_YUVJ444P \
- || (x)==PIX_FMT_PAL8 \
- || (x)==PIX_FMT_BGR8 \
- || (x)==PIX_FMT_RGB8 \
- || (x)==PIX_FMT_BGR4_BYTE \
- || (x)==PIX_FMT_RGB4_BYTE \
- || (x)==PIX_FMT_YUV440P \
- || (x)==PIX_FMT_MONOWHITE \
- || (x)==PIX_FMT_MONOBLACK \
- || (x)==PIX_FMT_YUV420P16LE \
- || (x)==PIX_FMT_YUV422P16LE \
- || (x)==PIX_FMT_YUV444P16LE \
- || (x)==PIX_FMT_YUV420P16BE \
- || (x)==PIX_FMT_YUV422P16BE \
- || (x)==PIX_FMT_YUV444P16BE \
- )
-
-int sws_isSupportedInput(enum PixelFormat pix_fmt)
-{
- return isSupportedIn(pix_fmt);
-}
-
-#define isSupportedOut(x) ( \
- (x)==PIX_FMT_YUV420P \
- || (x)==PIX_FMT_YUVA420P \
- || (x)==PIX_FMT_YUYV422 \
- || (x)==PIX_FMT_UYVY422 \
- || (x)==PIX_FMT_YUV444P \
- || (x)==PIX_FMT_YUV422P \
- || (x)==PIX_FMT_YUV411P \
- || (x)==PIX_FMT_YUVJ420P \
- || (x)==PIX_FMT_YUVJ422P \
- || (x)==PIX_FMT_YUVJ440P \
- || (x)==PIX_FMT_YUVJ444P \
- || isAnyRGB(x) \
- || (x)==PIX_FMT_NV12 \
- || (x)==PIX_FMT_NV21 \
- || (x)==PIX_FMT_GRAY16BE \
- || (x)==PIX_FMT_GRAY16LE \
- || (x)==PIX_FMT_GRAY8 \
- || (x)==PIX_FMT_YUV410P \
- || (x)==PIX_FMT_YUV440P \
- || (x)==PIX_FMT_YUV420P16LE \
- || (x)==PIX_FMT_YUV422P16LE \
- || (x)==PIX_FMT_YUV444P16LE \
- || (x)==PIX_FMT_YUV420P16BE \
- || (x)==PIX_FMT_YUV422P16BE \
- || (x)==PIX_FMT_YUV444P16BE \
- )
-
-int sws_isSupportedOutput(enum PixelFormat pix_fmt)
-{
- return isSupportedOut(pix_fmt);
-}
-
-extern const int32_t ff_yuv2rgb_coeffs[8][4];
-
-const char *sws_format_name(enum PixelFormat format)
-{
- if ((unsigned)format < PIX_FMT_NB && av_pix_fmt_descriptors[format].name)
- return av_pix_fmt_descriptors[format].name;
- else
- return "Unknown format";
-}
-
-static double getSplineCoeff(double a, double b, double c, double d, double dist)
-{
-// printf("%f %f %f %f %f\n", a,b,c,d,dist);
- if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
- else return getSplineCoeff( 0.0,
- b+ 2.0*c + 3.0*d,
- c + 3.0*d,
- -b- 3.0*c - 6.0*d,
- dist-1.0);
-}
-
-static int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
- int srcW, int dstW, int filterAlign, int one, int flags,
- SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
-{
- int i;
- int filterSize;
- int filter2Size;
- int minFilterSize;
- int64_t *filter=NULL;
- int64_t *filter2=NULL;
- const int64_t fone= 1LL<<54;
- int ret= -1;
-#if ARCH_X86
- if (flags & SWS_CPU_CAPS_MMX)
- __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
-#endif
-
- // NOTE: the +1 is for the MMX scaler which reads over the end
- FF_ALLOC_OR_GOTO(NULL, *filterPos, (dstW+1)*sizeof(int16_t), fail);
-
- if (FFABS(xInc - 0x10000) <10) { // unscaled
- int i;
- filterSize= 1;
- FF_ALLOCZ_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);
-
- for (i=0; i<dstW; i++) {
- filter[i*filterSize]= fone;
- (*filterPos)[i]=i;
- }
-
- } else if (flags&SWS_POINT) { // lame looking point sampling mode
- int i;
- int xDstInSrc;
- filterSize= 1;
- FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);
-
- xDstInSrc= xInc/2 - 0x8000;
- for (i=0; i<dstW; i++) {
- int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
-
- (*filterPos)[i]= xx;
- filter[i]= fone;
- xDstInSrc+= xInc;
- }
- } else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) { // bilinear upscale
- int i;
- int xDstInSrc;
- filterSize= 2;
- FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);
-
- xDstInSrc= xInc/2 - 0x8000;
- for (i=0; i<dstW; i++) {
- int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
- int j;
-
- (*filterPos)[i]= xx;
- //bilinear upscale / linear interpolate / area averaging
- for (j=0; j<filterSize; j++) {
- int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);
- if (coeff<0) coeff=0;
- filter[i*filterSize + j]= coeff;
- xx++;
- }
- xDstInSrc+= xInc;
- }
- } else {
- int xDstInSrc;
- int sizeFactor;
-
- if (flags&SWS_BICUBIC) sizeFactor= 4;
- else if (flags&SWS_X) sizeFactor= 8;
- else if (flags&SWS_AREA) sizeFactor= 1; //downscale only, for upscale it is bilinear
- else if (flags&SWS_GAUSS) sizeFactor= 8; // infinite ;)
- else if (flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;
- else if (flags&SWS_SINC) sizeFactor= 20; // infinite ;)
- else if (flags&SWS_SPLINE) sizeFactor= 20; // infinite ;)
- else if (flags&SWS_BILINEAR) sizeFactor= 2;
- else {
- sizeFactor= 0; //GCC warning killer
- assert(0);
- }
-
- if (xInc <= 1<<16) filterSize= 1 + sizeFactor; // upscale
- else filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;
-
- if (filterSize > srcW-2) filterSize=srcW-2;
-
- FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);
-
- xDstInSrc= xInc - 0x10000;
- for (i=0; i<dstW; i++) {
- int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);
- int j;
- (*filterPos)[i]= xx;
- for (j=0; j<filterSize; j++) {
- int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;
- double floatd;
- int64_t coeff;
-
- if (xInc > 1<<16)
- d= d*dstW/srcW;
- floatd= d * (1.0/(1<<30));
-
- if (flags & SWS_BICUBIC) {
- int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1<<24);
- int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);
- int64_t dd = ( d*d)>>30;
- int64_t ddd= (dd*d)>>30;
-
- if (d < 1LL<<30)
- coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);
- else if (d < 1LL<<31)
- coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);
- else
- coeff=0.0;
- coeff *= fone>>(30+24);
- }
-/* else if (flags & SWS_X) {
- double p= param ? param*0.01 : 0.3;
- coeff = d ? sin(d*PI)/(d*PI) : 1.0;
- coeff*= pow(2.0, - p*d*d);
- }*/
- else if (flags & SWS_X) {
- double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
- double c;
-
- if (floatd<1.0)
- c = cos(floatd*M_PI);
- else
- c=-1.0;
- if (c<0.0) c= -pow(-c, A);
- else c= pow( c, A);
- coeff= (c*0.5 + 0.5)*fone;
- } else if (flags & SWS_AREA) {
- int64_t d2= d - (1<<29);
- if (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));
- else if (d2*xInc < (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));
- else coeff=0.0;
- coeff *= fone>>(30+16);
- } else if (flags & SWS_GAUSS) {
- double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
- coeff = (pow(2.0, - p*floatd*floatd))*fone;
- } else if (flags & SWS_SINC) {
- coeff = (d ? sin(floatd*M_PI)/(floatd*M_PI) : 1.0)*fone;
- } else if (flags & SWS_LANCZOS) {
- double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
- coeff = (d ? sin(floatd*M_PI)*sin(floatd*M_PI/p)/(floatd*floatd*M_PI*M_PI/p) : 1.0)*fone;
- if (floatd>p) coeff=0;
- } else if (flags & SWS_BILINEAR) {
- coeff= (1<<30) - d;
- if (coeff<0) coeff=0;
- coeff *= fone >> 30;
- } else if (flags & SWS_SPLINE) {
- double p=-2.196152422706632;
- coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;
- } else {
- coeff= 0.0; //GCC warning killer
- assert(0);
- }
-
- filter[i*filterSize + j]= coeff;
- xx++;
- }
- xDstInSrc+= 2*xInc;
- }
- }
-
- /* apply src & dst Filter to filter -> filter2
- av_free(filter);
- */
- assert(filterSize>0);
- filter2Size= filterSize;
- if (srcFilter) filter2Size+= srcFilter->length - 1;
- if (dstFilter) filter2Size+= dstFilter->length - 1;
- assert(filter2Size>0);
- FF_ALLOCZ_OR_GOTO(NULL, filter2, filter2Size*dstW*sizeof(*filter2), fail);
-
- for (i=0; i<dstW; i++) {
- int j, k;
-
- if(srcFilter) {
- for (k=0; k<srcFilter->length; k++) {
- for (j=0; j<filterSize; j++)
- filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];
- }
- } else {
- for (j=0; j<filterSize; j++)
- filter2[i*filter2Size + j]= filter[i*filterSize + j];
- }
- //FIXME dstFilter
-
- (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
- }
- av_freep(&filter);
-
- /* try to reduce the filter-size (step1 find size and shift left) */
- // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
- minFilterSize= 0;
- for (i=dstW-1; i>=0; i--) {
- int min= filter2Size;
- int j;
- int64_t cutOff=0.0;
-
- /* get rid of near zero elements on the left by shifting left */
- for (j=0; j<filter2Size; j++) {
- int k;
- cutOff += FFABS(filter2[i*filter2Size]);
-
- if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;
-
- /* preserve monotonicity because the core can't handle the filter otherwise */
- if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
-
- // move filter coefficients left
- for (k=1; k<filter2Size; k++)
- filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
- filter2[i*filter2Size + k - 1]= 0;
- (*filterPos)[i]++;
- }
-
- cutOff=0;
- /* count near zeros on the right */
- for (j=filter2Size-1; j>0; j--) {
- cutOff += FFABS(filter2[i*filter2Size + j]);
-
- if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;
- min--;
- }
-
- if (min>minFilterSize) minFilterSize= min;
- }
-
- if (flags & SWS_CPU_CAPS_ALTIVEC) {
- // we can handle the special case 4,
- // so we don't want to go to the full 8
- if (minFilterSize < 5)
- filterAlign = 4;
-
- // We really don't want to waste our time
- // doing useless computation, so fall back on
- // the scalar C code for very small filters.
- // Vectorizing is worth it only if you have a
- // decent-sized vector.
- if (minFilterSize < 3)
- filterAlign = 1;
- }
-
- if (flags & SWS_CPU_CAPS_MMX) {
- // special case for unscaled vertical filtering
- if (minFilterSize == 1 && filterAlign == 2)
- filterAlign= 1;
- }
-
- assert(minFilterSize > 0);
- filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
- assert(filterSize > 0);
- filter= av_malloc(filterSize*dstW*sizeof(*filter));
- if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)
- goto fail;
- *outFilterSize= filterSize;
-
- if (flags&SWS_PRINT_INFO)
- av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
- /* try to reduce the filter-size (step2 reduce it) */
- for (i=0; i<dstW; i++) {
- int j;
-
- for (j=0; j<filterSize; j++) {
- if (j>=filter2Size) filter[i*filterSize + j]= 0;
- else filter[i*filterSize + j]= filter2[i*filter2Size + j];
- if((flags & SWS_BITEXACT) && j>=minFilterSize)
- filter[i*filterSize + j]= 0;
- }
- }
-
- //FIXME try to align filterPos if possible
-
- //fix borders
- for (i=0; i<dstW; i++) {
- int j;
- if ((*filterPos)[i] < 0) {
- // move filter coefficients left to compensate for filterPos
- for (j=1; j<filterSize; j++) {
- int left= FFMAX(j + (*filterPos)[i], 0);
- filter[i*filterSize + left] += filter[i*filterSize + j];
- filter[i*filterSize + j]=0;
- }
- (*filterPos)[i]= 0;
- }
-
- if ((*filterPos)[i] + filterSize > srcW) {
- int shift= (*filterPos)[i] + filterSize - srcW;
- // move filter coefficients right to compensate for filterPos
- for (j=filterSize-2; j>=0; j--) {
- int right= FFMIN(j + shift, filterSize-1);
- filter[i*filterSize +right] += filter[i*filterSize +j];
- filter[i*filterSize +j]=0;
- }
- (*filterPos)[i]= srcW - filterSize;
- }
- }
-
- // Note the +1 is for the MMX scaler which reads over the end
- /* align at 16 for AltiVec (needed by hScale_altivec_real) */
- FF_ALLOCZ_OR_GOTO(NULL, *outFilter, *outFilterSize*(dstW+1)*sizeof(int16_t), fail);
-
- /* normalize & store in outFilter */
- for (i=0; i<dstW; i++) {
- int j;
- int64_t error=0;
- int64_t sum=0;
-
- for (j=0; j<filterSize; j++) {
- sum+= filter[i*filterSize + j];
- }
- sum= (sum + one/2)/ one;
- for (j=0; j<*outFilterSize; j++) {
- int64_t v= filter[i*filterSize + j] + error;
- int intV= ROUNDED_DIV(v, sum);
- (*outFilter)[i*(*outFilterSize) + j]= intV;
- error= v - intV*sum;
- }
- }
-
- (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
- for (i=0; i<*outFilterSize; i++) {
- int j= dstW*(*outFilterSize);
- (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
- }
-
- ret=0;
-fail:
- av_free(filter);
- av_free(filter2);
- return ret;
-}
-
-#if ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
-static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
-{
- uint8_t *fragmentA;
- x86_reg imm8OfPShufW1A;
- x86_reg imm8OfPShufW2A;
- x86_reg fragmentLengthA;
- uint8_t *fragmentB;
- x86_reg imm8OfPShufW1B;
- x86_reg imm8OfPShufW2B;
- x86_reg fragmentLengthB;
- int fragmentPos;
-
- int xpos, i;
-
- // create an optimized horizontal scaling routine
- /* This scaler is made of runtime-generated MMX2 code using specially
- * tuned pshufw instructions. For every four output pixels, if four
- * input pixels are enough for the fast bilinear scaling, then a chunk
- * of fragmentB is used. If five input pixels are needed, then a chunk
- * of fragmentA is used.
- */
-
- //code fragment
-
- __asm__ volatile(
- "jmp 9f \n\t"
- // Begin
- "0: \n\t"
- "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
- "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
- "movd 1(%%"REG_c", %%"REG_S"), %%mm1 \n\t"
- "punpcklbw %%mm7, %%mm1 \n\t"
- "punpcklbw %%mm7, %%mm0 \n\t"
- "pshufw $0xFF, %%mm1, %%mm1 \n\t"
- "1: \n\t"
- "pshufw $0xFF, %%mm0, %%mm0 \n\t"
- "2: \n\t"
- "psubw %%mm1, %%mm0 \n\t"
- "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
- "pmullw %%mm3, %%mm0 \n\t"
- "psllw $7, %%mm1 \n\t"
- "paddw %%mm1, %%mm0 \n\t"
-
- "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
-
- "add $8, %%"REG_a" \n\t"
- // End
- "9: \n\t"
-// "int $3 \n\t"
- "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
- "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
- "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
- "dec %1 \n\t"
- "dec %2 \n\t"
- "sub %0, %1 \n\t"
- "sub %0, %2 \n\t"
- "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
- "sub %0, %3 \n\t"
-
-
- :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
- "=r" (fragmentLengthA)
- );
-
- __asm__ volatile(
- "jmp 9f \n\t"
- // Begin
- "0: \n\t"
- "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
- "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
- "punpcklbw %%mm7, %%mm0 \n\t"
- "pshufw $0xFF, %%mm0, %%mm1 \n\t"
- "1: \n\t"
- "pshufw $0xFF, %%mm0, %%mm0 \n\t"
- "2: \n\t"
- "psubw %%mm1, %%mm0 \n\t"
- "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
- "pmullw %%mm3, %%mm0 \n\t"
- "psllw $7, %%mm1 \n\t"
- "paddw %%mm1, %%mm0 \n\t"
-
- "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
-
- "add $8, %%"REG_a" \n\t"
- // End
- "9: \n\t"
-// "int $3 \n\t"
- "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
- "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
- "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
- "dec %1 \n\t"
- "dec %2 \n\t"
- "sub %0, %1 \n\t"
- "sub %0, %2 \n\t"
- "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
- "sub %0, %3 \n\t"
-
-
- :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
- "=r" (fragmentLengthB)
- );
-
- xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
- fragmentPos=0;
-
- for (i=0; i<dstW/numSplits; i++) {
- int xx=xpos>>16;
-
- if ((i&3) == 0) {
- int a=0;
- int b=((xpos+xInc)>>16) - xx;
- int c=((xpos+xInc*2)>>16) - xx;
- int d=((xpos+xInc*3)>>16) - xx;
- int inc = (d+1<4);
- uint8_t *fragment = (d+1<4) ? fragmentB : fragmentA;
- x86_reg imm8OfPShufW1 = (d+1<4) ? imm8OfPShufW1B : imm8OfPShufW1A;
- x86_reg imm8OfPShufW2 = (d+1<4) ? imm8OfPShufW2B : imm8OfPShufW2A;
- x86_reg fragmentLength = (d+1<4) ? fragmentLengthB : fragmentLengthA;
- int maxShift= 3-(d+inc);
- int shift=0;
-
- if (filterCode) {
- filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
- filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
- filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
- filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
- filterPos[i/2]= xx;
-
- memcpy(filterCode + fragmentPos, fragment, fragmentLength);
-
- filterCode[fragmentPos + imm8OfPShufW1]=
- (a+inc) | ((b+inc)<<2) | ((c+inc)<<4) | ((d+inc)<<6);
- filterCode[fragmentPos + imm8OfPShufW2]=
- a | (b<<2) | (c<<4) | (d<<6);
-
- if (i+4-inc>=dstW) shift=maxShift; //avoid overread
- else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
-
- if (shift && i>=shift) {
- filterCode[fragmentPos + imm8OfPShufW1]+= 0x55*shift;
- filterCode[fragmentPos + imm8OfPShufW2]+= 0x55*shift;
- filterPos[i/2]-=shift;
- }
- }
-
- fragmentPos+= fragmentLength;
-
- if (filterCode)
- filterCode[fragmentPos]= RET;
- }
- xpos+=xInc;
- }
- if (filterCode)
- filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part
-
- return fragmentPos + 1;
-}
-#endif /* ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL */
-
-static void getSubSampleFactors(int *h, int *v, enum PixelFormat format)
-{
- *h = av_pix_fmt_descriptors[format].log2_chroma_w;
- *v = av_pix_fmt_descriptors[format].log2_chroma_h;
-}
-
-static uint16_t roundToInt16(int64_t f)
-{
- int r= (f + (1<<15))>>16;
- if (r<-0x7FFF) return 0x8000;
- else if (r> 0x7FFF) return 0x7FFF;
- else return r;
-}
-
-int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)
-{
- int64_t crv = inv_table[0];
- int64_t cbu = inv_table[1];
- int64_t cgu = -inv_table[2];
- int64_t cgv = -inv_table[3];
- int64_t cy = 1<<16;
- int64_t oy = 0;
-
- memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
- memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
-
- c->brightness= brightness;
- c->contrast = contrast;
- c->saturation= saturation;
- c->srcRange = srcRange;
- c->dstRange = dstRange;
- if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
-
- c->uOffset= 0x0400040004000400LL;
- c->vOffset= 0x0400040004000400LL;
-
- if (!srcRange) {
- cy= (cy*255) / 219;
- oy= 16<<16;
- } else {
- crv= (crv*224) / 255;
- cbu= (cbu*224) / 255;
- cgu= (cgu*224) / 255;
- cgv= (cgv*224) / 255;
- }
-
- cy = (cy *contrast )>>16;
- crv= (crv*contrast * saturation)>>32;
- cbu= (cbu*contrast * saturation)>>32;
- cgu= (cgu*contrast * saturation)>>32;
- cgv= (cgv*contrast * saturation)>>32;
-
- oy -= 256*brightness;
-
- c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
- c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
- c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
- c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
- c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
- c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
-
- c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy <<13);
- c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);
- c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);
- c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);
- c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);
- c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);
-
- ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
- //FIXME factorize
-
-#if ARCH_PPC && (HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT)
- if (c->flags & SWS_CPU_CAPS_ALTIVEC)
- ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);
-#endif
- return 0;
-}
-
-int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)
-{
- if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
-
- *inv_table = c->srcColorspaceTable;
- *table = c->dstColorspaceTable;
- *srcRange = c->srcRange;
- *dstRange = c->dstRange;
- *brightness= c->brightness;
- *contrast = c->contrast;
- *saturation= c->saturation;
-
- return 0;
-}
-
-static int handle_jpeg(enum PixelFormat *format)
-{
- switch (*format) {
- case PIX_FMT_YUVJ420P:
- *format = PIX_FMT_YUV420P;
- return 1;
- case PIX_FMT_YUVJ422P:
- *format = PIX_FMT_YUV422P;
- return 1;
- case PIX_FMT_YUVJ444P:
- *format = PIX_FMT_YUV444P;
- return 1;
- case PIX_FMT_YUVJ440P:
- *format = PIX_FMT_YUV440P;
- return 1;
- default:
- return 0;
- }
-}
-
-SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat,
- int dstW, int dstH, enum PixelFormat dstFormat, int flags,
- SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
-{
- SwsContext *c;
- int i;
- int usesVFilter, usesHFilter;
- int unscaled;
- int srcRange, dstRange;
- SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
-#if ARCH_X86
- if (flags & SWS_CPU_CAPS_MMX)
- __asm__ volatile("emms\n\t"::: "memory");
-#endif
-
-#if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off
- flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
- flags |= ff_hardcodedcpuflags();
-#endif /* CONFIG_RUNTIME_CPUDETECT */
- if (!rgb15to16) sws_rgb2rgb_init(flags);
-
- unscaled = (srcW == dstW && srcH == dstH);
-
- srcRange = handle_jpeg(&srcFormat);
- dstRange = handle_jpeg(&dstFormat);
-
- if (!isSupportedIn(srcFormat)) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));
- return NULL;
- }
- if (!isSupportedOut(dstFormat)) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));
- return NULL;
- }
-
- i= flags & ( SWS_POINT
- |SWS_AREA
- |SWS_BILINEAR
- |SWS_FAST_BILINEAR
- |SWS_BICUBIC
- |SWS_X
- |SWS_GAUSS
- |SWS_LANCZOS
- |SWS_SINC
- |SWS_SPLINE
- |SWS_BICUBLIN);
- if(!i || (i & (i-1))) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");
- return NULL;
- }
-
- /* sanity check */
- if (srcW<4 || srcH<1 || dstW<8 || dstH<1) { //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code
- av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
- srcW, srcH, dstW, dstH);
- return NULL;
- }
- if(srcW > VOFW || dstW > VOFW) {
- av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");
- return NULL;
- }
-
- if (!dstFilter) dstFilter= &dummyFilter;
- if (!srcFilter) srcFilter= &dummyFilter;
-
- FF_ALLOCZ_OR_GOTO(NULL, c, sizeof(SwsContext), fail);
-
- c->av_class = &sws_context_class;
- c->srcW= srcW;
- c->srcH= srcH;
- c->dstW= dstW;
- c->dstH= dstH;
- c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
- c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
- c->flags= flags;
- c->dstFormat= dstFormat;
- c->srcFormat= srcFormat;
- c->dstFormatBpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[dstFormat]);
- c->srcFormatBpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[srcFormat]);
- c->vRounder= 4* 0x0001000100010001ULL;
-
- usesVFilter = (srcFilter->lumV && srcFilter->lumV->length>1) ||
- (srcFilter->chrV && srcFilter->chrV->length>1) ||
- (dstFilter->lumV && dstFilter->lumV->length>1) ||
- (dstFilter->chrV && dstFilter->chrV->length>1);
- usesHFilter = (srcFilter->lumH && srcFilter->lumH->length>1) ||
- (srcFilter->chrH && srcFilter->chrH->length>1) ||
- (dstFilter->lumH && dstFilter->lumH->length>1) ||
- (dstFilter->chrH && dstFilter->chrH->length>1);
-
- getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
- getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
-
- // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation
- if (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
-
- // drop some chroma lines if the user wants it
- c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
- c->chrSrcVSubSample+= c->vChrDrop;
-
- // drop every other pixel for chroma calculation unless user wants full chroma
- if (isAnyRGB(srcFormat) && !(flags&SWS_FULL_CHR_H_INP)
- && srcFormat!=PIX_FMT_RGB8 && srcFormat!=PIX_FMT_BGR8
- && srcFormat!=PIX_FMT_RGB4 && srcFormat!=PIX_FMT_BGR4
- && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE
- && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))
- c->chrSrcHSubSample=1;
-
- if (param) {
- c->param[0] = param[0];
- c->param[1] = param[1];
- } else {
- c->param[0] =
- c->param[1] = SWS_PARAM_DEFAULT;
- }
-
- // Note the -((-x)>>y) is so that we always round toward +inf.
- c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
- c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
- c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
- c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
-
- sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);
-
- /* unscaled special cases */
- if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isAnyRGB(dstFormat))) {
- ff_get_unscaled_swscale(c);
-
- if (c->swScale) {
- if (flags&SWS_PRINT_INFO)
- av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",
- sws_format_name(srcFormat), sws_format_name(dstFormat));
- return c;
- }
- }
-
- if (flags & SWS_CPU_CAPS_MMX2) {
- c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
- if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR)) {
- if (flags&SWS_PRINT_INFO)
- av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");
- }
- if (usesHFilter) c->ca