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Diffstat (limited to 'ffmpeg1/libswscale/utils.c')
| -rw-r--r-- | ffmpeg1/libswscale/utils.c | 1882 |
1 files changed, 0 insertions, 1882 deletions
diff --git a/ffmpeg1/libswscale/utils.c b/ffmpeg1/libswscale/utils.c deleted file mode 100644 index 932cf94..0000000 --- a/ffmpeg1/libswscale/utils.c +++ /dev/null @@ -1,1882 +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 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. - * - * 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser 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 - */ - -#include "config.h" - -#define _SVID_SOURCE // needed for MAP_ANONYMOUS -#define _DARWIN_C_SOURCE // needed for MAP_ANON -#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/avassert.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/x86/asm.h" -#include "libavutil/x86/cpu.h" -#include "rgb2rgb.h" -#include "swscale.h" -#include "swscale_internal.h" - -unsigned swscale_version(void) -{ - av_assert0(LIBSWSCALE_VERSION_MICRO >= 100); - 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 - -typedef struct FormatEntry { - int is_supported_in, is_supported_out; -} 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_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_0RGB] = { 1, 1 }, - [AV_PIX_FMT_RGB0] = { 1, 1 }, - [AV_PIX_FMT_0BGR] = { 1, 1 }, - [AV_PIX_FMT_BGR0] = { 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] = { 1, 0 }, - [AV_PIX_FMT_RGBA64LE] = { 1, 0 }, - [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 }, - [AV_PIX_FMT_BGRA64LE] = { 0, 0 }, - [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_YUV420P12BE] = { 1, 1 }, - [AV_PIX_FMT_YUV420P12LE] = { 1, 1 }, - [AV_PIX_FMT_YUV420P14BE] = { 1, 1 }, - [AV_PIX_FMT_YUV420P14LE] = { 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_YUV422P12BE] = { 1, 1 }, - [AV_PIX_FMT_YUV422P12LE] = { 1, 1 }, - [AV_PIX_FMT_YUV422P14BE] = { 1, 1 }, - [AV_PIX_FMT_YUV422P14LE] = { 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_YUV444P12BE] = { 1, 1 }, - [AV_PIX_FMT_YUV444P12LE] = { 1, 1 }, - [AV_PIX_FMT_YUV444P14BE] = { 1, 1 }, - [AV_PIX_FMT_YUV444P14LE] = { 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_GBRP12LE] = { 1, 1 }, - [AV_PIX_FMT_GBRP12BE] = { 1, 1 }, - [AV_PIX_FMT_GBRP14LE] = { 1, 1 }, - [AV_PIX_FMT_GBRP14BE] = { 1, 1 }, - [AV_PIX_FMT_GBRP16LE] = { 1, 0 }, - [AV_PIX_FMT_GBRP16BE] = { 1, 0 }, -}; - -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; -} - -extern const int32_t ff_yuv2rgb_coeffs[8][4]; - -#if FF_API_SWS_FORMAT_NAME -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"; -} -#endif - -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 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 i; - int filterSize; - int filter2Size; - int minFilterSize; - int64_t *filter = NULL; - int64_t *filter2 = NULL; - const int64_t fone = 1LL << (54 - FFMIN(av_log2(srcW/dstW), 8)); - 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; - int64_t 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; - int64_t 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(((int64_t)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 { - av_assert0(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 /= (1LL<<54)/fone; - } -#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 { - av_assert0(0); - } - - filter[i * filterSize + j] = coeff; - xx++; - } - xDstInSrc += 2 * xInc; - } - } - - /* apply src & dst Filter to filter -> filter2 - * av_free(filter); - */ - av_assert0(filterSize > 0); - filter2Size = filterSize; - if (srcFilter) - filter2Size += srcFilter->length - 1; - if (dstFilter) - filter2Size += dstFilter->length - 1; - av_assert0(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 (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) { - // 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; - } - - av_assert0(minFilterSize > 0); - filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1)); - av_assert0(filterSize > 0); - filter = av_malloc(filterSize * dstW * sizeof(*filter)); - if (filterSize >= MAX_FILTER_SIZE * 16 / - ((flags & SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter) { - av_log(NULL, AV_LOG_ERROR, "sws: filterSize %d is too large, try less extreem scaling or increase MAX_FILTER_SIZE and recompile\n", filterSize); - 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 + 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: - if(ret < 0) - av_log(NULL, AV_LOG_ERROR, "sws: initFilter failed\n"); - av_free(filter); - av_free(filter2); - return ret; -} - -#if HAVE_MMXEXT_INLINE -static 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); - - if(!isYUV(c->dstFormat) && !isGray(c->dstFormat)) - dstRange = 0; - if(!isYUV(c->srcFormat) && !isGray(c->srcFormat)) - srcRange = 0; - - 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 (HAVE_ALTIVEC && av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) - ff_yuv2rgb_init_tables_altivec(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 (!c || 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; - } -} - -static int handle_0alpha(enum AVPixelFormat *format) -{ - switch (*format) { - case AV_PIX_FMT_0BGR : *format = AV_PIX_FMT_ABGR ; return 1; - case AV_PIX_FMT_BGR0 : *format = AV_PIX_FMT_BGRA ; return 4; - case AV_PIX_FMT_0RGB : *format = AV_PIX_FMT_ARGB ; return 1; - case AV_PIX_FMT_RGB0 : *format = AV_PIX_FMT_RGBA ; return 4; - 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, j; - 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) + 66, 16); - 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); - - handle_jpeg(&srcFormat); - handle_jpeg(&dstFormat); - handle_0alpha(&srcFormat); - handle_0alpha(&dstFormat); - - if(srcFormat!=c->srcFormat || dstFormat!=c->dstFormat){ - av_log(c, AV_LOG_WARNING, "deprecated pixel format used, make sure you did set range correctly\n"); - c->srcFormat= srcFormat; - c->dstFormat= dstFormat; - } - - if (!sws_isSupportedInput(srcFormat)) { - av_log(c, AV_LOG_ERROR, "%s is not supported as input pixel format\n", - av_get_pix_fmt_name(srcFormat)); - return AVERROR(EINVAL); - } - if (!sws_isSupportedOutput(dstFormat)) { - av_log(c, AV_LOG_ERROR, "%s is not supported as output pixel format\n", - av_get_pix_fmt_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); - if (!i || (i & (i - 1))) { - av_log(c, AV_LOG_ERROR, "Exactly one scaler algorithm must be chosen, got %X\n", i); - return AVERROR(EINVAL); - } - /* sanity check */ - if (srcW < 1 || srcH < 1 || dstW < 1 || 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 (isAnyRGB(dstFormat) && !(flags&SWS_FULL_CHR_H_INT)) { - if (dstW&1) { - av_log(c, AV_LOG_DEBUG, "Forcing full internal H chroma due to odd output size\n"); - flags |= SWS_FULL_CHR_H_INT; - c->flags = flags; - } - } - - if(dstFormat == AV_PIX_FMT_BGR4_BYTE || - dstFormat == AV_PIX_FMT_RGB4_BYTE || - dstFormat == AV_PIX_FMT_BGR8 || - dstFormat == AV_PIX_FMT_RGB8) { - if (flags & SWS_ERROR_DIFFUSION && !(flags & SWS_FULL_CHR_H_INT)) { - av_log(c, AV_LOG_DEBUG, - "Error diffusion dither is only supported in full chroma interpolation for destination format '%s'\n", - av_get_pix_fmt_name(dstFormat)); - flags |= SWS_FULL_CHR_H_INT; - c->flags = flags; - } - if (!(flags & SWS_ERROR_DIFFUSION) && (flags & SWS_FULL_CHR_H_INT)) { - av_log(c, AV_LOG_DEBUG, - "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n", - av_get_pix_fmt_name(dstFormat)); - flags |= SWS_ERROR_DIFFUSION; - c->flags = flags; - } - } - 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 && - dstFormat != AV_PIX_FMT_BGR4_BYTE && - dstFormat != AV_PIX_FMT_RGB4_BYTE && - dstFormat != AV_PIX_FMT_BGR8 && - dstFormat != AV_PIX_FMT_RGB8 - ) { - av_log(c, AV_LOG_WARNING, - "full chroma interpolation for destination format '%s' not yet implemented\n", - av_get_pix_fmt_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_GBRP12BE && srcFormat != AV_PIX_FMT_GBRP12LE && - srcFormat != AV_PIX_FMT_GBRP14BE && srcFormat != AV_PIX_FMT_GBRP14LE && - 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); - - FF_ALLOC_OR_GOTO(c, c->formatConvBuffer, FFALIGN(srcW*2+78, 16) * 2, fail); - - /* 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", - av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_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 (isAnyRGB(srcFormat) || srcFormat == AV_PIX_FMT_PAL8) - c->srcBpc = 16; - if (c->dstBpc == 16) - dst_stride <<= 1; - - if (INLINE_MMXEXT(cpu_flags) && c->srcBpc == 8 && c->dstBpc <= 14) { - 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 || isNBPS(c->srcFormat) || is16BPS(c->srcFormat) || isAnyRGB(c->srcFormat)) - 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->dstBpc <= 14) { - 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 - -#ifdef MAP_ANONYMOUS - if (c->lumMmxextFilterCode == MAP_FAILED || c->chrMmxextFilterCode == MAP_FAILED) -#else - if (!c->lumMmxextFilterCode || !c->chrMmxextFilterCode) -#endif - { - av_log(c, AV_LOG_ERROR, "Failed to allocate MMX2FilterCode\n"); - 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, (uint32_t*)c->hLumFilterPos, 8); - init_hscaler_mmxext(c->chrDstW, c->chrXInc, c->chrMmxextFilterCode, - c->hChrFilter, (uint32_t*)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 = - (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 4 : - (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 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) < 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) < 0) - goto fail; - } - } // initialize horizontal stuff - - /* precalculate vertical scaler filter coefficients */ - { - const int filterAlign = - (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 2 : - (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 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) - 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) - 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]; - } - - for (i = 0; i < 4; i++) - FF_ALLOCZ_OR_GOTO(c, c->dither_error[i], (c->dstW+2) * sizeof(int), fail); - - /* 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->scalingBpp is the same as 16 / sizeof(scaling_intermediate) - c->uv_off = (dst_stride>>1) + 64 / (c->dstBpc &~ 7); - c->uv_offx2 = 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++) - if(desc_dst->comp[0].depth_minus1 == 15){ - av_assert0(c->dstBpc > 14); - for(j=0; j<dst_stride/2+1; j++) - ((int32_t*)(c->chrUPixBuf[i]))[j] = 1<<18; - } else - for(j=0; j<dst_stride+1; j++) - ((int16_t*)(c->chrUPixBuf[i]))[j] = 1<<14; - - av_assert0(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 ", - av_get_pix_fmt_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 - av_get_pix_fmt_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 (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) - 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->src0Alpha = handle_0alpha(&srcFormat); - c->dst0Alpha = handle_0alpha(&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; - - if(length <= 0 || length > INT_MAX/ sizeof(double)) - return NULL; - - 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; - - if(variance < 0 || quality < 0) - return NULL; - - 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); - } - - for (i = 0; i < 4; i++) - av_freep(&c->dither_error[i]); - - 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_freep(&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->src0Alpha = handle_0alpha(&srcFormat); - context->srcFormat = srcFormat; - context->dstW = dstW; - context->dstH = dstH; - context->dstRange = handle_jpeg(&dstFormat); - context->dst0Alpha = handle_0alpha(&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; -} |