mirror of https://git.ffmpeg.org/ffmpeg.git
1783 lines
63 KiB
C
1783 lines
63 KiB
C
/*
|
|
* Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#define _SVID_SOURCE // needed for MAP_ANONYMOUS
|
|
#include <assert.h>
|
|
#include <inttypes.h>
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
#include <string.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 "libavutil/attributes.h"
|
|
#include "libavutil/avutil.h"
|
|
#include "libavutil/bswap.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/mathematics.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/ppc/cpu.h"
|
|
#include "libavutil/x86/asm.h"
|
|
#include "libavutil/x86/cpu.h"
|
|
#include "rgb2rgb.h"
|
|
#include "swscale.h"
|
|
#include "swscale_internal.h"
|
|
|
|
unsigned swscale_version(void)
|
|
{
|
|
return LIBSWSCALE_VERSION_INT;
|
|
}
|
|
|
|
const char *swscale_configuration(void)
|
|
{
|
|
return LIBAV_CONFIGURATION;
|
|
}
|
|
|
|
const char *swscale_license(void)
|
|
{
|
|
#define LICENSE_PREFIX "libswscale license: "
|
|
return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
|
|
}
|
|
|
|
#define RET 0xC3 // near return opcode for x86
|
|
|
|
typedef struct FormatEntry {
|
|
uint8_t is_supported_in :1;
|
|
uint8_t is_supported_out :1;
|
|
uint8_t is_supported_endianness :1;
|
|
} FormatEntry;
|
|
|
|
static const FormatEntry format_entries[AV_PIX_FMT_NB] = {
|
|
[AV_PIX_FMT_YUV420P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUYV422] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB24] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR24] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV422P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV444P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV410P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV411P] = { 1, 1 },
|
|
[AV_PIX_FMT_GRAY8] = { 1, 1 },
|
|
[AV_PIX_FMT_MONOWHITE] = { 1, 1 },
|
|
[AV_PIX_FMT_MONOBLACK] = { 1, 1 },
|
|
[AV_PIX_FMT_PAL8] = { 1, 0 },
|
|
[AV_PIX_FMT_YUVJ420P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVJ422P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVJ444P] = { 1, 1 },
|
|
[AV_PIX_FMT_YVYU422] = { 1, 1 },
|
|
[AV_PIX_FMT_UYVY422] = { 1, 1 },
|
|
[AV_PIX_FMT_UYYVYY411] = { 0, 0 },
|
|
[AV_PIX_FMT_BGR8] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR4] = { 0, 1 },
|
|
[AV_PIX_FMT_BGR4_BYTE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB8] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB4] = { 0, 1 },
|
|
[AV_PIX_FMT_RGB4_BYTE] = { 1, 1 },
|
|
[AV_PIX_FMT_NV12] = { 1, 1 },
|
|
[AV_PIX_FMT_NV21] = { 1, 1 },
|
|
[AV_PIX_FMT_ARGB] = { 1, 1 },
|
|
[AV_PIX_FMT_RGBA] = { 1, 1 },
|
|
[AV_PIX_FMT_ABGR] = { 1, 1 },
|
|
[AV_PIX_FMT_BGRA] = { 1, 1 },
|
|
[AV_PIX_FMT_GRAY16BE] = { 1, 1 },
|
|
[AV_PIX_FMT_GRAY16LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV440P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVJ440P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA420P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA422P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA444P] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA420P9BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA420P9LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA422P9BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA422P9LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA444P9BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA444P9LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUVA420P10BE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA420P10LE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA422P10BE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA422P10LE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA444P10BE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA444P10LE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA420P16BE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA420P16LE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA422P16BE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA422P16LE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA444P16BE]= { 1, 1 },
|
|
[AV_PIX_FMT_YUVA444P16LE]= { 1, 1 },
|
|
[AV_PIX_FMT_RGB48BE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB48LE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGBA64BE] = { 0, 0, 1 },
|
|
[AV_PIX_FMT_RGBA64LE] = { 0, 0, 1 },
|
|
[AV_PIX_FMT_RGB565BE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB565LE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB555BE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB555LE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR565BE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR565LE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR555BE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR555LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV420P16LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV420P16BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV422P16LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV422P16BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV444P16LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV444P16BE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB444LE] = { 1, 1 },
|
|
[AV_PIX_FMT_RGB444BE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR444LE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR444BE] = { 1, 1 },
|
|
[AV_PIX_FMT_Y400A] = { 1, 0 },
|
|
[AV_PIX_FMT_BGR48BE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGR48LE] = { 1, 1 },
|
|
[AV_PIX_FMT_BGRA64BE] = { 0, 0, 1 },
|
|
[AV_PIX_FMT_BGRA64LE] = { 0, 0, 1 },
|
|
[AV_PIX_FMT_YUV420P9BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV420P9LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV420P10BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV420P10LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV422P9BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV422P9LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV422P10BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV422P10LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV444P9BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV444P9LE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV444P10BE] = { 1, 1 },
|
|
[AV_PIX_FMT_YUV444P10LE] = { 1, 1 },
|
|
[AV_PIX_FMT_GBRP] = { 1, 1 },
|
|
[AV_PIX_FMT_GBRP9LE] = { 1, 1 },
|
|
[AV_PIX_FMT_GBRP9BE] = { 1, 1 },
|
|
[AV_PIX_FMT_GBRP10LE] = { 1, 1 },
|
|
[AV_PIX_FMT_GBRP10BE] = { 1, 1 },
|
|
[AV_PIX_FMT_GBRP16LE] = { 1, 0 },
|
|
[AV_PIX_FMT_GBRP16BE] = { 1, 0 },
|
|
[AV_PIX_FMT_XYZ12BE] = { 0, 0, 1 },
|
|
[AV_PIX_FMT_XYZ12LE] = { 0, 0, 1 },
|
|
};
|
|
|
|
int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
|
|
{
|
|
return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
|
|
format_entries[pix_fmt].is_supported_in : 0;
|
|
}
|
|
|
|
int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
|
|
{
|
|
return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
|
|
format_entries[pix_fmt].is_supported_out : 0;
|
|
}
|
|
|
|
int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
|
|
{
|
|
return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
|
|
format_entries[pix_fmt].is_supported_endianness : 0;
|
|
}
|
|
|
|
const char *sws_format_name(enum AVPixelFormat format)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(format);
|
|
if (desc)
|
|
return desc->name;
|
|
else
|
|
return "Unknown format";
|
|
}
|
|
|
|
static double getSplineCoeff(double a, double b, double c, double d,
|
|
double 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 av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
|
|
int *outFilterSize, int xInc, int srcW,
|
|
int dstW, int filterAlign, int one,
|
|
int flags, int cpu_flags,
|
|
SwsVector *srcFilter, SwsVector *dstFilter,
|
|
double param[2], int is_horizontal)
|
|
{
|
|
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;
|
|
|
|
emms_c(); // FIXME should not be required but IS (even for non-MMX versions)
|
|
|
|
// NOTE: the +3 is for the MMX(+1) / SSE(+3) scaler which reads over the end
|
|
FF_ALLOC_OR_GOTO(NULL, *filterPos, (dstW + 3) * sizeof(**filterPos), 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 {
|
|
int64_t 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;
|
|
|
|
filterSize = FFMIN(filterSize, srcW - 2);
|
|
filterSize = FFMAX(filterSize, 1);
|
|
|
|
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 = (FFABS(((int64_t)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);
|
|
|
|
if (d >= 1LL << 31) {
|
|
coeff = 0.0;
|
|
} else {
|
|
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
|
|
coeff = (-B - 6 * C) * ddd +
|
|
(6 * B + 30 * C) * dd +
|
|
(-12 * B - 48 * C) * d +
|
|
(8 * B + 24 * C) * (1 << 30);
|
|
}
|
|
coeff *= fone >> (30 + 24);
|
|
}
|
|
#if 0
|
|
else if (flags & SWS_X) {
|
|
double p = param ? param * 0.01 : 0.3;
|
|
coeff = d ? sin(d * M_PI) / (d * M_PI) : 1.0;
|
|
coeff *= pow(2.0, -p * d * d);
|
|
}
|
|
#endif
|
|
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 (PPC_ALTIVEC(cpu_flags)) {
|
|
// we can handle the special case 4, so we don't want to go 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 (INLINE_MMX(cpu_flags)) {
|
|
// 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
|
|
if (is_horizontal) {
|
|
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 + 3) * 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 + 0] =
|
|
(*filterPos)[dstW + 1] =
|
|
(*filterPos)[dstW + 2] = (*filterPos)[dstW - 1]; /* the MMX/SSE scaler will
|
|
* read over the end */
|
|
for (i = 0; i < *outFilterSize; i++) {
|
|
int k = (dstW - 1) * (*outFilterSize) + i;
|
|
(*outFilter)[k + 1 * (*outFilterSize)] =
|
|
(*outFilter)[k + 2 * (*outFilterSize)] =
|
|
(*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
fail:
|
|
av_free(filter);
|
|
av_free(filter2);
|
|
return ret;
|
|
}
|
|
|
|
#if HAVE_MMXEXT_INLINE
|
|
static av_cold int init_hscaler_mmxext(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 MMXEXT 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 /* HAVE_MMXEXT_INLINE */
|
|
|
|
static void getSubSampleFactors(int *h, int *v, enum AVPixelFormat format)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(format);
|
|
*h = desc->log2_chroma_w;
|
|
*v = desc->log2_chroma_h;
|
|
}
|
|
|
|
int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
|
|
int srcRange, const int table[4], int dstRange,
|
|
int brightness, int contrast, int saturation)
|
|
{
|
|
const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);
|
|
const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);
|
|
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->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
|
|
c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
|
|
|
|
ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness,
|
|
contrast, saturation);
|
|
// FIXME factorize
|
|
|
|
if (ARCH_PPC)
|
|
ff_yuv2rgb_init_tables_ppc(c, inv_table, brightness,
|
|
contrast, saturation);
|
|
return 0;
|
|
}
|
|
|
|
int sws_getColorspaceDetails(struct 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 AVPixelFormat *format)
|
|
{
|
|
switch (*format) {
|
|
case AV_PIX_FMT_YUVJ420P:
|
|
*format = AV_PIX_FMT_YUV420P;
|
|
return 1;
|
|
case AV_PIX_FMT_YUVJ422P:
|
|
*format = AV_PIX_FMT_YUV422P;
|
|
return 1;
|
|
case AV_PIX_FMT_YUVJ444P:
|
|
*format = AV_PIX_FMT_YUV444P;
|
|
return 1;
|
|
case AV_PIX_FMT_YUVJ440P:
|
|
*format = AV_PIX_FMT_YUV440P;
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
SwsContext *sws_alloc_context(void)
|
|
{
|
|
SwsContext *c = av_mallocz(sizeof(SwsContext));
|
|
|
|
if (c) {
|
|
c->av_class = &sws_context_class;
|
|
av_opt_set_defaults(c);
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
|
|
SwsFilter *dstFilter)
|
|
{
|
|
int i;
|
|
int usesVFilter, usesHFilter;
|
|
int unscaled;
|
|
SwsFilter dummyFilter = { NULL, NULL, NULL, NULL };
|
|
int srcW = c->srcW;
|
|
int srcH = c->srcH;
|
|
int dstW = c->dstW;
|
|
int dstH = c->dstH;
|
|
int dst_stride = FFALIGN(dstW * sizeof(int16_t) + 16, 16);
|
|
int dst_stride_px = dst_stride >> 1;
|
|
int flags, cpu_flags;
|
|
enum AVPixelFormat srcFormat = c->srcFormat;
|
|
enum AVPixelFormat dstFormat = c->dstFormat;
|
|
const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(srcFormat);
|
|
const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(dstFormat);
|
|
|
|
cpu_flags = av_get_cpu_flags();
|
|
flags = c->flags;
|
|
emms_c();
|
|
if (!rgb15to16)
|
|
sws_rgb2rgb_init();
|
|
|
|
unscaled = (srcW == dstW && srcH == dstH);
|
|
|
|
if (!(unscaled && sws_isSupportedEndiannessConversion(srcFormat) &&
|
|
av_pix_fmt_swap_endianness(srcFormat) == dstFormat)) {
|
|
if (!sws_isSupportedInput(srcFormat)) {
|
|
av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n",
|
|
sws_format_name(srcFormat));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!sws_isSupportedOutput(dstFormat)) {
|
|
av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n",
|
|
sws_format_name(dstFormat));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
/* provide a default scaler if not set by caller */
|
|
if (!i) {
|
|
if (dstW < srcW && dstH < srcH)
|
|
flags |= SWS_GAUSS;
|
|
else if (dstW > srcW && dstH > srcH)
|
|
flags |= SWS_SINC;
|
|
else
|
|
flags |= SWS_LANCZOS;
|
|
c->flags = flags;
|
|
} else if (i & (i - 1)) {
|
|
av_log(c, AV_LOG_ERROR,
|
|
"Exactly one scaler algorithm must be chosen\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
/* sanity check */
|
|
if (srcW < 4 || srcH < 1 || dstW < 8 || dstH < 1) {
|
|
/* FIXME check if these are enough and try to lower them after
|
|
* fixing the relevant parts of the code */
|
|
av_log(c, AV_LOG_ERROR, "%dx%d -> %dx%d is invalid scaling dimension\n",
|
|
srcW, srcH, dstW, dstH);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (!dstFilter)
|
|
dstFilter = &dummyFilter;
|
|
if (!srcFilter)
|
|
srcFilter = &dummyFilter;
|
|
|
|
c->lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
|
|
c->lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
|
|
c->dstFormatBpp = av_get_bits_per_pixel(desc_dst);
|
|
c->srcFormatBpp = av_get_bits_per_pixel(desc_src);
|
|
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);
|
|
|
|
if (isPlanarRGB(dstFormat)) {
|
|
if (!(flags & SWS_FULL_CHR_H_INT)) {
|
|
av_log(c, AV_LOG_DEBUG,
|
|
"%s output is not supported with half chroma resolution, switching to full\n",
|
|
av_get_pix_fmt_name(dstFormat));
|
|
flags |= SWS_FULL_CHR_H_INT;
|
|
c->flags = flags;
|
|
}
|
|
}
|
|
|
|
/* reuse chroma for 2 pixels RGB/BGR unless user wants full
|
|
* chroma interpolation */
|
|
if (flags & SWS_FULL_CHR_H_INT &&
|
|
isAnyRGB(dstFormat) &&
|
|
!isPlanarRGB(dstFormat) &&
|
|
dstFormat != AV_PIX_FMT_RGBA &&
|
|
dstFormat != AV_PIX_FMT_ARGB &&
|
|
dstFormat != AV_PIX_FMT_BGRA &&
|
|
dstFormat != AV_PIX_FMT_ABGR &&
|
|
dstFormat != AV_PIX_FMT_RGB24 &&
|
|
dstFormat != AV_PIX_FMT_BGR24) {
|
|
av_log(c, AV_LOG_ERROR,
|
|
"full chroma interpolation for destination format '%s' not yet implemented\n",
|
|
sws_format_name(dstFormat));
|
|
flags &= ~SWS_FULL_CHR_H_INT;
|
|
c->flags = flags;
|
|
}
|
|
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 != AV_PIX_FMT_RGB8 && srcFormat != AV_PIX_FMT_BGR8 &&
|
|
srcFormat != AV_PIX_FMT_RGB4 && srcFormat != AV_PIX_FMT_BGR4 &&
|
|
srcFormat != AV_PIX_FMT_RGB4_BYTE && srcFormat != AV_PIX_FMT_BGR4_BYTE &&
|
|
srcFormat != AV_PIX_FMT_GBRP9BE && srcFormat != AV_PIX_FMT_GBRP9LE &&
|
|
srcFormat != AV_PIX_FMT_GBRP10BE && srcFormat != AV_PIX_FMT_GBRP10LE &&
|
|
srcFormat != AV_PIX_FMT_GBRP16BE && srcFormat != AV_PIX_FMT_GBRP16LE &&
|
|
((dstW >> c->chrDstHSubSample) <= (srcW >> 1) ||
|
|
(flags & SWS_FAST_BILINEAR)))
|
|
c->chrSrcHSubSample = 1;
|
|
|
|
// 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);
|
|
|
|
/* unscaled special cases */
|
|
if (unscaled && !usesHFilter && !usesVFilter &&
|
|
(c->srcRange == c->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 0;
|
|
}
|
|
}
|
|
|
|
c->srcBpc = 1 + desc_src->comp[0].depth_minus1;
|
|
if (c->srcBpc < 8)
|
|
c->srcBpc = 8;
|
|
c->dstBpc = 1 + desc_dst->comp[0].depth_minus1;
|
|
if (c->dstBpc < 8)
|
|
c->dstBpc = 8;
|
|
if (c->dstBpc == 16)
|
|
dst_stride <<= 1;
|
|
FF_ALLOC_OR_GOTO(c, c->formatConvBuffer,
|
|
(FFALIGN(srcW, 16) * 2 * FFALIGN(c->srcBpc, 8) >> 3) + 16,
|
|
fail);
|
|
if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 10) {
|
|
c->canMMXEXTBeUsed = (dstW >= srcW && (dstW & 31) == 0 &&
|
|
(srcW & 15) == 0) ? 1 : 0;
|
|
if (!c->canMMXEXTBeUsed && 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 MMXEXT scaler\n");
|
|
}
|
|
if (usesHFilter)
|
|
c->canMMXEXTBeUsed = 0;
|
|
} else
|
|
c->canMMXEXTBeUsed = 0;
|
|
|
|
c->chrXInc = (((int64_t)c->chrSrcW << 16) + (c->chrDstW >> 1)) / c->chrDstW;
|
|
c->chrYInc = (((int64_t)c->chrSrcH << 16) + (c->chrDstH >> 1)) / c->chrDstH;
|
|
|
|
/* Match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src
|
|
* to pixel n-2 of dst, but only for the FAST_BILINEAR mode otherwise do
|
|
* correct scaling.
|
|
* n-2 is the last chrominance sample available.
|
|
* This is not perfect, but no one should notice the difference, the more
|
|
* correct variant would be like the vertical one, but that would require
|
|
* some special code for the first and last pixel */
|
|
if (flags & SWS_FAST_BILINEAR) {
|
|
if (c->canMMXEXTBeUsed) {
|
|
c->lumXInc += 20;
|
|
c->chrXInc += 20;
|
|
}
|
|
// we don't use the x86 asm scaler if MMX is available
|
|
else if (INLINE_MMX(cpu_flags)) {
|
|
c->lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
|
|
c->chrXInc = ((int64_t)(c->chrSrcW - 2) << 16) / (c->chrDstW - 2) - 20;
|
|
}
|
|
}
|
|
|
|
#define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
|
|
|
|
/* precalculate horizontal scaler filter coefficients */
|
|
{
|
|
#if HAVE_MMXEXT_INLINE
|
|
// can't downscale !!!
|
|
if (c->canMMXEXTBeUsed && (flags & SWS_FAST_BILINEAR)) {
|
|
c->lumMmxextFilterCodeSize = init_hscaler_mmxext(dstW, c->lumXInc, NULL,
|
|
NULL, NULL, 8);
|
|
c->chrMmxextFilterCodeSize = init_hscaler_mmxext(c->chrDstW, c->chrXInc,
|
|
NULL, NULL, NULL, 4);
|
|
|
|
#if USE_MMAP
|
|
c->lumMmxextFilterCode = mmap(NULL, c->lumMmxextFilterCodeSize,
|
|
PROT_READ | PROT_WRITE,
|
|
MAP_PRIVATE | MAP_ANONYMOUS,
|
|
-1, 0);
|
|
c->chrMmxextFilterCode = mmap(NULL, c->chrMmxextFilterCodeSize,
|
|
PROT_READ | PROT_WRITE,
|
|
MAP_PRIVATE | MAP_ANONYMOUS,
|
|
-1, 0);
|
|
#elif HAVE_VIRTUALALLOC
|
|
c->lumMmxextFilterCode = VirtualAlloc(NULL,
|
|
c->lumMmxextFilterCodeSize,
|
|
MEM_COMMIT,
|
|
PAGE_EXECUTE_READWRITE);
|
|
c->chrMmxextFilterCode = VirtualAlloc(NULL,
|
|
c->chrMmxextFilterCodeSize,
|
|
MEM_COMMIT,
|
|
PAGE_EXECUTE_READWRITE);
|
|
#else
|
|
c->lumMmxextFilterCode = av_malloc(c->lumMmxextFilterCodeSize);
|
|
c->chrMmxextFilterCode = av_malloc(c->chrMmxextFilterCodeSize);
|
|
#endif
|
|
|
|
if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode)
|
|
return AVERROR(ENOMEM);
|
|
FF_ALLOCZ_OR_GOTO(c, c->hLumFilter, (dstW / 8 + 8) * sizeof(int16_t), fail);
|
|
FF_ALLOCZ_OR_GOTO(c, c->hChrFilter, (c->chrDstW / 4 + 8) * sizeof(int16_t), fail);
|
|
FF_ALLOCZ_OR_GOTO(c, c->hLumFilterPos, (dstW / 2 / 8 + 8) * sizeof(int32_t), fail);
|
|
FF_ALLOCZ_OR_GOTO(c, c->hChrFilterPos, (c->chrDstW / 2 / 4 + 8) * sizeof(int32_t), fail);
|
|
|
|
init_hscaler_mmxext(dstW, c->lumXInc, c->lumMmxextFilterCode,
|
|
c->hLumFilter, c->hLumFilterPos, 8);
|
|
init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode,
|
|
c->hChrFilter, c->hChrFilterPos, 4);
|
|
|
|
#if USE_MMAP
|
|
mprotect(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize, PROT_EXEC | PROT_READ);
|
|
mprotect(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize, PROT_EXEC | PROT_READ);
|
|
#endif
|
|
} else
|
|
#endif /* HAVE_MMXEXT_INLINE */
|
|
{
|
|
const int filterAlign = X86_MMX(cpu_flags) ? 4 :
|
|
PPC_ALTIVEC(cpu_flags) ? 8 : 1;
|
|
|
|
if (initFilter(&c->hLumFilter, &c->hLumFilterPos,
|
|
&c->hLumFilterSize, c->lumXInc,
|
|
srcW, dstW, filterAlign, 1 << 14,
|
|
(flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags,
|
|
cpu_flags, srcFilter->lumH, dstFilter->lumH,
|
|
c->param, 1) < 0)
|
|
goto fail;
|
|
if (initFilter(&c->hChrFilter, &c->hChrFilterPos,
|
|
&c->hChrFilterSize, c->chrXInc,
|
|
c->chrSrcW, c->chrDstW, filterAlign, 1 << 14,
|
|
(flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags,
|
|
cpu_flags, srcFilter->chrH, dstFilter->chrH,
|
|
c->param, 1) < 0)
|
|
goto fail;
|
|
}
|
|
} // initialize horizontal stuff
|
|
|
|
/* precalculate vertical scaler filter coefficients */
|
|
{
|
|
const int filterAlign = X86_MMX(cpu_flags) ? 2 :
|
|
PPC_ALTIVEC(cpu_flags) ? 8 : 1;
|
|
|
|
if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
|
|
c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
|
|
(flags & SWS_BICUBLIN) ? (flags | SWS_BICUBIC) : flags,
|
|
cpu_flags, srcFilter->lumV, dstFilter->lumV,
|
|
c->param, 0) < 0)
|
|
goto fail;
|
|
if (initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize,
|
|
c->chrYInc, c->chrSrcH, c->chrDstH,
|
|
filterAlign, (1 << 12),
|
|
(flags & SWS_BICUBLIN) ? (flags | SWS_BILINEAR) : flags,
|
|
cpu_flags, srcFilter->chrV, dstFilter->chrV,
|
|
c->param, 0) < 0)
|
|
goto fail;
|
|
|
|
#if HAVE_ALTIVEC
|
|
FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof(vector signed short) * c->vLumFilterSize * c->dstH, fail);
|
|
FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof(vector signed short) * c->vChrFilterSize * c->chrDstH, fail);
|
|
|
|
for (i = 0; i < c->vLumFilterSize * c->dstH; i++) {
|
|
int j;
|
|
short *p = (short *)&c->vYCoeffsBank[i];
|
|
for (j = 0; j < 8; j++)
|
|
p[j] = c->vLumFilter[i];
|
|
}
|
|
|
|
for (i = 0; i < c->vChrFilterSize * c->chrDstH; i++) {
|
|
int j;
|
|
short *p = (short *)&c->vCCoeffsBank[i];
|
|
for (j = 0; j < 8; j++)
|
|
p[j] = c->vChrFilter[i];
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// calculate buffer sizes so that they won't run out while handling these damn slices
|
|
c->vLumBufSize = c->vLumFilterSize;
|
|
c->vChrBufSize = c->vChrFilterSize;
|
|
for (i = 0; i < dstH; i++) {
|
|
int chrI = (int64_t)i * c->chrDstH / dstH;
|
|
int nextSlice = FFMAX(c->vLumFilterPos[i] + c->vLumFilterSize - 1,
|
|
((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)
|
|
<< c->chrSrcVSubSample));
|
|
|
|
nextSlice >>= c->chrSrcVSubSample;
|
|
nextSlice <<= c->chrSrcVSubSample;
|
|
if (c->vLumFilterPos[i] + c->vLumBufSize < nextSlice)
|
|
c->vLumBufSize = nextSlice - c->vLumFilterPos[i];
|
|
if (c->vChrFilterPos[chrI] + c->vChrBufSize <
|
|
(nextSlice >> c->chrSrcVSubSample))
|
|
c->vChrBufSize = (nextSlice >> c->chrSrcVSubSample) -
|
|
c->vChrFilterPos[chrI];
|
|
}
|
|
|
|
/* Allocate pixbufs (we use dynamic allocation because otherwise we would
|
|
* need to allocate several megabytes to handle all possible cases) */
|
|
FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail);
|
|
FF_ALLOC_OR_GOTO(c, c->chrUPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail);
|
|
FF_ALLOC_OR_GOTO(c, c->chrVPixBuf, c->vChrBufSize * 3 * sizeof(int16_t *), fail);
|
|
if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))
|
|
FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize * 3 * sizeof(int16_t *), fail);
|
|
/* Note we need at least one pixel more at the end because of the MMX code
|
|
* (just in case someone wants to replace the 4000/8000). */
|
|
/* align at 16 bytes for AltiVec */
|
|
for (i = 0; i < c->vLumBufSize; i++) {
|
|
FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i + c->vLumBufSize],
|
|
dst_stride + 16, fail);
|
|
c->lumPixBuf[i] = c->lumPixBuf[i + c->vLumBufSize];
|
|
}
|
|
// 64 / (c->dstBpc & ~7) is the same as 16 / sizeof(scaling_intermediate)
|
|
c->uv_off_px = dst_stride_px + 64 / (c->dstBpc & ~7);
|
|
c->uv_off_byte = dst_stride + 16;
|
|
for (i = 0; i < c->vChrBufSize; i++) {
|
|
FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i + c->vChrBufSize],
|
|
dst_stride * 2 + 32, fail);
|
|
c->chrUPixBuf[i] = c->chrUPixBuf[i + c->vChrBufSize];
|
|
c->chrVPixBuf[i] = c->chrVPixBuf[i + c->vChrBufSize]
|
|
= c->chrUPixBuf[i] + (dst_stride >> 1) + 8;
|
|
}
|
|
if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)
|
|
for (i = 0; i < c->vLumBufSize; i++) {
|
|
FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i + c->vLumBufSize],
|
|
dst_stride + 16, fail);
|
|
c->alpPixBuf[i] = c->alpPixBuf[i + c->vLumBufSize];
|
|
}
|
|
|
|
// try to avoid drawing green stuff between the right end and the stride end
|
|
for (i = 0; i < c->vChrBufSize; i++)
|
|
memset(c->chrUPixBuf[i], 64, dst_stride * 2 + 1);
|
|
|
|
assert(c->chrDstH <= dstH);
|
|
|
|
if (flags & SWS_PRINT_INFO) {
|
|
if (flags & SWS_FAST_BILINEAR)
|
|
av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");
|
|
else if (flags & SWS_BILINEAR)
|
|
av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");
|
|
else if (flags & SWS_BICUBIC)
|
|
av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");
|
|
else if (flags & SWS_X)
|
|
av_log(c, AV_LOG_INFO, "Experimental scaler, ");
|
|
else if (flags & SWS_POINT)
|
|
av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");
|
|
else if (flags & SWS_AREA)
|
|
av_log(c, AV_LOG_INFO, "Area Averaging scaler, ");
|
|
else if (flags & SWS_BICUBLIN)
|
|
av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");
|
|
else if (flags & SWS_GAUSS)
|
|
av_log(c, AV_LOG_INFO, "Gaussian scaler, ");
|
|
else if (flags & SWS_SINC)
|
|
av_log(c, AV_LOG_INFO, "Sinc scaler, ");
|
|
else if (flags & SWS_LANCZOS)
|
|
av_log(c, AV_LOG_INFO, "Lanczos scaler, ");
|
|
else if (flags & SWS_SPLINE)
|
|
av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");
|
|
else
|
|
av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");
|
|
|
|
av_log(c, AV_LOG_INFO, "from %s to %s%s ",
|
|
sws_format_name(srcFormat),
|
|
#ifdef DITHER1XBPP
|
|
dstFormat == AV_PIX_FMT_BGR555 || dstFormat == AV_PIX_FMT_BGR565 ||
|
|
dstFormat == AV_PIX_FMT_RGB444BE || dstFormat == AV_PIX_FMT_RGB444LE ||
|
|
dstFormat == AV_PIX_FMT_BGR444BE || dstFormat == AV_PIX_FMT_BGR444LE ?
|
|
"dithered " : "",
|
|
#else
|
|
"",
|
|
#endif
|
|
sws_format_name(dstFormat));
|
|
|
|
if (INLINE_MMXEXT(cpu_flags))
|
|
av_log(c, AV_LOG_INFO, "using MMXEXT\n");
|
|
else if (INLINE_AMD3DNOW(cpu_flags))
|
|
av_log(c, AV_LOG_INFO, "using 3DNOW\n");
|
|
else if (INLINE_MMX(cpu_flags))
|
|
av_log(c, AV_LOG_INFO, "using MMX\n");
|
|
else if (PPC_ALTIVEC(cpu_flags))
|
|
av_log(c, AV_LOG_INFO, "using AltiVec\n");
|
|
else
|
|
av_log(c, AV_LOG_INFO, "using C\n");
|
|
|
|
av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
|
|
av_log(c, AV_LOG_DEBUG,
|
|
"lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
|
|
c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
|
|
av_log(c, AV_LOG_DEBUG,
|
|
"chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
|
|
c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH,
|
|
c->chrXInc, c->chrYInc);
|
|
}
|
|
|
|
c->swscale = ff_getSwsFunc(c);
|
|
return 0;
|
|
fail: // FIXME replace things by appropriate error codes
|
|
return -1;
|
|
}
|
|
|
|
#if FF_API_SWS_GETCONTEXT
|
|
SwsContext *sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat,
|
|
int dstW, int dstH, enum AVPixelFormat dstFormat,
|
|
int flags, SwsFilter *srcFilter,
|
|
SwsFilter *dstFilter, const double *param)
|
|
{
|
|
SwsContext *c;
|
|
|
|
if (!(c = sws_alloc_context()))
|
|
return NULL;
|
|
|
|
c->flags = flags;
|
|
c->srcW = srcW;
|
|
c->srcH = srcH;
|
|
c->dstW = dstW;
|
|
c->dstH = dstH;
|
|
c->srcRange = handle_jpeg(&srcFormat);
|
|
c->dstRange = handle_jpeg(&dstFormat);
|
|
c->srcFormat = srcFormat;
|
|
c->dstFormat = dstFormat;
|
|
|
|
if (param) {
|
|
c->param[0] = param[0];
|
|
c->param[1] = param[1];
|
|
}
|
|
sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], c->srcRange,
|
|
ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/,
|
|
c->dstRange, 0, 1 << 16, 1 << 16);
|
|
|
|
if (sws_init_context(c, srcFilter, dstFilter) < 0) {
|
|
sws_freeContext(c);
|
|
return NULL;
|
|
}
|
|
|
|
return c;
|
|
}
|
|
#endif
|
|
|
|
SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
|
|
float lumaSharpen, float chromaSharpen,
|
|
float chromaHShift, float chromaVShift,
|
|
int verbose)
|
|
{
|
|
SwsFilter *filter = av_malloc(sizeof(SwsFilter));
|
|
if (!filter)
|
|
return NULL;
|
|
|
|
if (lumaGBlur != 0.0) {
|
|
filter->lumH = sws_getGaussianVec(lumaGBlur, 3.0);
|
|
filter->lumV = sws_getGaussianVec(lumaGBlur, 3.0);
|
|
} else {
|
|
filter->lumH = sws_getIdentityVec();
|
|
filter->lumV = sws_getIdentityVec();
|
|
}
|
|
|
|
if (chromaGBlur != 0.0) {
|
|
filter->chrH = sws_getGaussianVec(chromaGBlur, 3.0);
|
|
filter->chrV = sws_getGaussianVec(chromaGBlur, 3.0);
|
|
} else {
|
|
filter->chrH = sws_getIdentityVec();
|
|
filter->chrV = sws_getIdentityVec();
|
|
}
|
|
|
|
if (chromaSharpen != 0.0) {
|
|
SwsVector *id = sws_getIdentityVec();
|
|
sws_scaleVec(filter->chrH, -chromaSharpen);
|
|
sws_scaleVec(filter->chrV, -chromaSharpen);
|
|
sws_addVec(filter->chrH, id);
|
|
sws_addVec(filter->chrV, id);
|
|
sws_freeVec(id);
|
|
}
|
|
|
|
if (lumaSharpen != 0.0) {
|
|
SwsVector *id = sws_getIdentityVec();
|
|
sws_scaleVec(filter->lumH, -lumaSharpen);
|
|
sws_scaleVec(filter->lumV, -lumaSharpen);
|
|
sws_addVec(filter->lumH, id);
|
|
sws_addVec(filter->lumV, id);
|
|
sws_freeVec(id);
|
|
}
|
|
|
|
if (chromaHShift != 0.0)
|
|
sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
|
|
|
|
if (chromaVShift != 0.0)
|
|
sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));
|
|
|
|
sws_normalizeVec(filter->chrH, 1.0);
|
|
sws_normalizeVec(filter->chrV, 1.0);
|
|
sws_normalizeVec(filter->lumH, 1.0);
|
|
sws_normalizeVec(filter->lumV, 1.0);
|
|
|
|
if (verbose)
|
|
sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
|
|
if (verbose)
|
|
sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
|
|
|
|
return filter;
|
|
}
|
|
|
|
SwsVector *sws_allocVec(int length)
|
|
{
|
|
SwsVector *vec = av_malloc(sizeof(SwsVector));
|
|
if (!vec)
|
|
return NULL;
|
|
vec->length = length;
|
|
vec->coeff = av_malloc(sizeof(double) * length);
|
|
if (!vec->coeff)
|
|
av_freep(&vec);
|
|
return vec;
|
|
}
|
|
|
|
SwsVector *sws_getGaussianVec(double variance, double quality)
|
|
{
|
|
const int length = (int)(variance * quality + 0.5) | 1;
|
|
int i;
|
|
double middle = (length - 1) * 0.5;
|
|
SwsVector *vec = sws_allocVec(length);
|
|
|
|
if (!vec)
|
|
return NULL;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
double dist = i - middle;
|
|
vec->coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
|
|
sqrt(2 * variance * M_PI);
|
|
}
|
|
|
|
sws_normalizeVec(vec, 1.0);
|
|
|
|
return vec;
|
|
}
|
|
|
|
SwsVector *sws_getConstVec(double c, int length)
|
|
{
|
|
int i;
|
|
SwsVector *vec = sws_allocVec(length);
|
|
|
|
if (!vec)
|
|
return NULL;
|
|
|
|
for (i = 0; i < length; i++)
|
|
vec->coeff[i] = c;
|
|
|
|
return vec;
|
|
}
|
|
|
|
SwsVector *sws_getIdentityVec(void)
|
|
{
|
|
return sws_getConstVec(1.0, 1);
|
|
}
|
|
|
|
static double sws_dcVec(SwsVector *a)
|
|
{
|
|
int i;
|
|
double sum = 0;
|
|
|
|
for (i = 0; i < a->length; i++)
|
|
sum += a->coeff[i];
|
|
|
|
return sum;
|
|
}
|
|
|
|
void sws_scaleVec(SwsVector *a, double scalar)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < a->length; i++)
|
|
a->coeff[i] *= scalar;
|
|
}
|
|
|
|
void sws_normalizeVec(SwsVector *a, double height)
|
|
{
|
|
sws_scaleVec(a, height / sws_dcVec(a));
|
|
}
|
|
|
|
static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b)
|
|
{
|
|
int length = a->length + b->length - 1;
|
|
int i, j;
|
|
SwsVector *vec = sws_getConstVec(0.0, length);
|
|
|
|
if (!vec)
|
|
return NULL;
|
|
|
|
for (i = 0; i < a->length; i++) {
|
|
for (j = 0; j < b->length; j++) {
|
|
vec->coeff[i + j] += a->coeff[i] * b->coeff[j];
|
|
}
|
|
}
|
|
|
|
return vec;
|
|
}
|
|
|
|
static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
|
|
{
|
|
int length = FFMAX(a->length, b->length);
|
|
int i;
|
|
SwsVector *vec = sws_getConstVec(0.0, length);
|
|
|
|
if (!vec)
|
|
return NULL;
|
|
|
|
for (i = 0; i < a->length; i++)
|
|
vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
|
|
for (i = 0; i < b->length; i++)
|
|
vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] += b->coeff[i];
|
|
|
|
return vec;
|
|
}
|
|
|
|
static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b)
|
|
{
|
|
int length = FFMAX(a->length, b->length);
|
|
int i;
|
|
SwsVector *vec = sws_getConstVec(0.0, length);
|
|
|
|
if (!vec)
|
|
return NULL;
|
|
|
|
for (i = 0; i < a->length; i++)
|
|
vec->coeff[i + (length - 1) / 2 - (a->length - 1) / 2] += a->coeff[i];
|
|
for (i = 0; i < b->length; i++)
|
|
vec->coeff[i + (length - 1) / 2 - (b->length - 1) / 2] -= b->coeff[i];
|
|
|
|
return vec;
|
|
}
|
|
|
|
/* shift left / or right if "shift" is negative */
|
|
static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
|
|
{
|
|
int length = a->length + FFABS(shift) * 2;
|
|
int i;
|
|
SwsVector *vec = sws_getConstVec(0.0, length);
|
|
|
|
if (!vec)
|
|
return NULL;
|
|
|
|
for (i = 0; i < a->length; i++) {
|
|
vec->coeff[i + (length - 1) / 2 -
|
|
(a->length - 1) / 2 - shift] = a->coeff[i];
|
|
}
|
|
|
|
return vec;
|
|
}
|
|
|
|
void sws_shiftVec(SwsVector *a, int shift)
|
|
{
|
|
SwsVector *shifted = sws_getShiftedVec(a, shift);
|
|
av_free(a->coeff);
|
|
a->coeff = shifted->coeff;
|
|
a->length = shifted->length;
|
|
av_free(shifted);
|
|
}
|
|
|
|
void sws_addVec(SwsVector *a, SwsVector *b)
|
|
{
|
|
SwsVector *sum = sws_sumVec(a, b);
|
|
av_free(a->coeff);
|
|
a->coeff = sum->coeff;
|
|
a->length = sum->length;
|
|
av_free(sum);
|
|
}
|
|
|
|
void sws_subVec(SwsVector *a, SwsVector *b)
|
|
{
|
|
SwsVector *diff = sws_diffVec(a, b);
|
|
av_free(a->coeff);
|
|
a->coeff = diff->coeff;
|
|
a->length = diff->length;
|
|
av_free(diff);
|
|
}
|
|
|
|
void sws_convVec(SwsVector *a, SwsVector *b)
|
|
{
|
|
SwsVector *conv = sws_getConvVec(a, b);
|
|
av_free(a->coeff);
|
|
a->coeff = conv->coeff;
|
|
a->length = conv->length;
|
|
av_free(conv);
|
|
}
|
|
|
|
SwsVector *sws_cloneVec(SwsVector *a)
|
|
{
|
|
int i;
|
|
SwsVector *vec = sws_allocVec(a->length);
|
|
|
|
if (!vec)
|
|
return NULL;
|
|
|
|
for (i = 0; i < a->length; i++)
|
|
vec->coeff[i] = a->coeff[i];
|
|
|
|
return vec;
|
|
}
|
|
|
|
void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
|
|
{
|
|
int i;
|
|
double max = 0;
|
|
double min = 0;
|
|
double range;
|
|
|
|
for (i = 0; i < a->length; i++)
|
|
if (a->coeff[i] > max)
|
|
max = a->coeff[i];
|
|
|
|
for (i = 0; i < a->length; i++)
|
|
if (a->coeff[i] < min)
|
|
min = a->coeff[i];
|
|
|
|
range = max - min;
|
|
|
|
for (i = 0; i < a->length; i++) {
|
|
int x = (int)((a->coeff[i] - min) * 60.0 / range + 0.5);
|
|
av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
|
|
for (; x > 0; x--)
|
|
av_log(log_ctx, log_level, " ");
|
|
av_log(log_ctx, log_level, "|\n");
|
|
}
|
|
}
|
|
|
|
void sws_freeVec(SwsVector *a)
|
|
{
|
|
if (!a)
|
|
return;
|
|
av_freep(&a->coeff);
|
|
a->length = 0;
|
|
av_free(a);
|
|
}
|
|
|
|
void sws_freeFilter(SwsFilter *filter)
|
|
{
|
|
if (!filter)
|
|
return;
|
|
|
|
if (filter->lumH)
|
|
sws_freeVec(filter->lumH);
|
|
if (filter->lumV)
|
|
sws_freeVec(filter->lumV);
|
|
if (filter->chrH)
|
|
sws_freeVec(filter->chrH);
|
|
if (filter->chrV)
|
|
sws_freeVec(filter->chrV);
|
|
av_free(filter);
|
|
}
|
|
|
|
void sws_freeContext(SwsContext *c)
|
|
{
|
|
int i;
|
|
if (!c)
|
|
return;
|
|
|
|
if (c->lumPixBuf) {
|
|
for (i = 0; i < c->vLumBufSize; i++)
|
|
av_freep(&c->lumPixBuf[i]);
|
|
av_freep(&c->lumPixBuf);
|
|
}
|
|
|
|
if (c->chrUPixBuf) {
|
|
for (i = 0; i < c->vChrBufSize; i++)
|
|
av_freep(&c->chrUPixBuf[i]);
|
|
av_freep(&c->chrUPixBuf);
|
|
av_freep(&c->chrVPixBuf);
|
|
}
|
|
|
|
if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
|
|
for (i = 0; i < c->vLumBufSize; i++)
|
|
av_freep(&c->alpPixBuf[i]);
|
|
av_freep(&c->alpPixBuf);
|
|
}
|
|
|
|
av_freep(&c->vLumFilter);
|
|
av_freep(&c->vChrFilter);
|
|
av_freep(&c->hLumFilter);
|
|
av_freep(&c->hChrFilter);
|
|
#if HAVE_ALTIVEC
|
|
av_freep(&c->vYCoeffsBank);
|
|
av_freep(&c->vCCoeffsBank);
|
|
#endif
|
|
|
|
av_freep(&c->vLumFilterPos);
|
|
av_freep(&c->vChrFilterPos);
|
|
av_freep(&c->hLumFilterPos);
|
|
av_freep(&c->hChrFilterPos);
|
|
|
|
#if HAVE_MMX_INLINE
|
|
#if USE_MMAP
|
|
if (c->lumMmxextFilterCode)
|
|
munmap(c->lumMmxextFilterCode, c->lumMmxextFilterCodeSize);
|
|
if (c->chrMmxextFilterCode)
|
|
munmap(c->chrMmxextFilterCode, c->chrMmxextFilterCodeSize);
|
|
#elif HAVE_VIRTUALALLOC
|
|
if (c->lumMmxextFilterCode)
|
|
VirtualFree(c->lumMmxextFilterCode, 0, MEM_RELEASE);
|
|
if (c->chrMmxextFilterCode)
|
|
VirtualFree(c->chrMmxextFilterCode, 0, MEM_RELEASE);
|
|
#else
|
|
av_free(c->lumMmxextFilterCode);
|
|
av_free(c->chrMmxextFilterCode);
|
|
#endif
|
|
c->lumMmxextFilterCode = NULL;
|
|
c->chrMmxextFilterCode = NULL;
|
|
#endif /* HAVE_MMX_INLINE */
|
|
|
|
av_freep(&c->yuvTable);
|
|
av_free(c->formatConvBuffer);
|
|
|
|
av_free(c);
|
|
}
|
|
|
|
struct SwsContext *sws_getCachedContext(struct SwsContext *context, int srcW,
|
|
int srcH, enum AVPixelFormat srcFormat,
|
|
int dstW, int dstH,
|
|
enum AVPixelFormat dstFormat, int flags,
|
|
SwsFilter *srcFilter,
|
|
SwsFilter *dstFilter,
|
|
const double *param)
|
|
{
|
|
static const double default_param[2] = { SWS_PARAM_DEFAULT,
|
|
SWS_PARAM_DEFAULT };
|
|
|
|
if (!param)
|
|
param = default_param;
|
|
|
|
if (context &&
|
|
(context->srcW != srcW ||
|
|
context->srcH != srcH ||
|
|
context->srcFormat != srcFormat ||
|
|
context->dstW != dstW ||
|
|
context->dstH != dstH ||
|
|
context->dstFormat != dstFormat ||
|
|
context->flags != flags ||
|
|
context->param[0] != param[0] ||
|
|
context->param[1] != param[1])) {
|
|
sws_freeContext(context);
|
|
context = NULL;
|
|
}
|
|
|
|
if (!context) {
|
|
if (!(context = sws_alloc_context()))
|
|
return NULL;
|
|
context->srcW = srcW;
|
|
context->srcH = srcH;
|
|
context->srcRange = handle_jpeg(&srcFormat);
|
|
context->srcFormat = srcFormat;
|
|
context->dstW = dstW;
|
|
context->dstH = dstH;
|
|
context->dstRange = handle_jpeg(&dstFormat);
|
|
context->dstFormat = dstFormat;
|
|
context->flags = flags;
|
|
context->param[0] = param[0];
|
|
context->param[1] = param[1];
|
|
sws_setColorspaceDetails(context, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT],
|
|
context->srcRange,
|
|
ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/,
|
|
context->dstRange, 0, 1 << 16, 1 << 16);
|
|
if (sws_init_context(context, srcFilter, dstFilter) < 0) {
|
|
sws_freeContext(context);
|
|
return NULL;
|
|
}
|
|
}
|
|
return context;
|
|
}
|