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- /*
- * Copyright (C) 2001-2011 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 <assert.h>
- #include <inttypes.h>
- #include <math.h>
- #include <stdio.h>
- #include <string.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/pixdesc.h"
- #include "config.h"
- #include "rgb2rgb.h"
- #include "swscale_internal.h"
- #include "swscale.h"
- DECLARE_ALIGNED(8, const uint8_t, dither_8x8_128)[8][8] = {
- { 36, 68, 60, 92, 34, 66, 58, 90, },
- { 100, 4, 124, 28, 98, 2, 122, 26, },
- { 52, 84, 44, 76, 50, 82, 42, 74, },
- { 116, 20, 108, 12, 114, 18, 106, 10, },
- { 32, 64, 56, 88, 38, 70, 62, 94, },
- { 96, 0, 120, 24, 102, 6, 126, 30, },
- { 48, 80, 40, 72, 54, 86, 46, 78, },
- { 112, 16, 104, 8, 118, 22, 110, 14, },
- };
- DECLARE_ALIGNED(8, const uint8_t, ff_sws_pb_64)[8] = {
- 64, 64, 64, 64, 64, 64, 64, 64
- };
- static av_always_inline void fillPlane(uint8_t *plane, int stride, int width,
- int height, int y, uint8_t val)
- {
- int i;
- uint8_t *ptr = plane + stride * y;
- for (i = 0; i < height; i++) {
- memset(ptr, val, width);
- ptr += stride;
- }
- }
- static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW,
- const uint8_t *_src, const int16_t *filter,
- const int32_t *filterPos, int filterSize)
- {
- int i;
- int32_t *dst = (int32_t *) _dst;
- const uint16_t *src = (const uint16_t *) _src;
- int bits = av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1;
- int sh = bits - 4;
- if((isAnyRGB(c->srcFormat) || c->srcFormat==PIX_FMT_PAL8) && av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1<15)
- sh= 9;
- for (i = 0; i < dstW; i++) {
- int j;
- int srcPos = filterPos[i];
- int val = 0;
- for (j = 0; j < filterSize; j++) {
- val += src[srcPos + j] * filter[filterSize * i + j];
- }
- // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
- dst[i] = FFMIN(val >> sh, (1 << 19) - 1);
- }
- }
- static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
- const uint8_t *_src, const int16_t *filter,
- const int32_t *filterPos, int filterSize)
- {
- int i;
- const uint16_t *src = (const uint16_t *) _src;
- int sh = av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1;
- if(sh<15)
- sh= isAnyRGB(c->srcFormat) || c->srcFormat==PIX_FMT_PAL8 ? 13 : av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1;
- for (i = 0; i < dstW; i++) {
- int j;
- int srcPos = filterPos[i];
- int val = 0;
- for (j = 0; j < filterSize; j++) {
- val += src[srcPos + j] * filter[filterSize * i + j];
- }
- // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit
- dst[i] = FFMIN(val >> sh, (1 << 15) - 1);
- }
- }
- // bilinear / bicubic scaling
- static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW,
- const uint8_t *src, const int16_t *filter,
- const int32_t *filterPos, int filterSize)
- {
- int i;
- for (i = 0; i < dstW; i++) {
- int j;
- int srcPos = filterPos[i];
- int val = 0;
- for (j = 0; j < filterSize; j++) {
- val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
- }
- dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ...
- }
- }
- static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW,
- const uint8_t *src, const int16_t *filter,
- const int32_t *filterPos, int filterSize)
- {
- int i;
- int32_t *dst = (int32_t *) _dst;
- for (i = 0; i < dstW; i++) {
- int j;
- int srcPos = filterPos[i];
- int val = 0;
- for (j = 0; j < filterSize; j++) {
- val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
- }
- dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ...
- }
- }
- // FIXME all pal and rgb srcFormats could do this convertion as well
- // FIXME all scalers more complex than bilinear could do half of this transform
- static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
- {
- int i;
- for (i = 0; i < width; i++) {
- dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264
- dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264
- }
- }
- static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
- {
- int i;
- for (i = 0; i < width; i++) {
- dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469
- dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469
- }
- }
- static void lumRangeToJpeg_c(int16_t *dst, int width)
- {
- int i;
- for (i = 0; i < width; i++)
- dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14;
- }
- static void lumRangeFromJpeg_c(int16_t *dst, int width)
- {
- int i;
- for (i = 0; i < width; i++)
- dst[i] = (dst[i] * 14071 + 33561947) >> 14;
- }
- static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
- {
- int i;
- int32_t *dstU = (int32_t *) _dstU;
- int32_t *dstV = (int32_t *) _dstV;
- for (i = 0; i < width; i++) {
- dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
- dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
- }
- }
- static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
- {
- int i;
- int32_t *dstU = (int32_t *) _dstU;
- int32_t *dstV = (int32_t *) _dstV;
- for (i = 0; i < width; i++) {
- dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469
- dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469
- }
- }
- static void lumRangeToJpeg16_c(int16_t *_dst, int width)
- {
- int i;
- int32_t *dst = (int32_t *) _dst;
- for (i = 0; i < width; i++)
- dst[i] = (FFMIN(dst[i], 30189 << 4) * 4769 - (39057361 << 2)) >> 12;
- }
- static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
- {
- int i;
- int32_t *dst = (int32_t *) _dst;
- for (i = 0; i < width; i++)
- dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
- }
- static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
- const uint8_t *src, int srcW, int xInc)
- {
- int i;
- unsigned int xpos = 0;
- for (i = 0; i < dstWidth; i++) {
- register unsigned int xx = xpos >> 16;
- register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
- dst[i] = (src[xx] << 7) + (src[xx + 1] - src[xx]) * xalpha;
- xpos += xInc;
- }
- for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--)
- dst[i] = src[srcW-1]*128;
- }
- // *** horizontal scale Y line to temp buffer
- static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
- const uint8_t *src_in[4],
- int srcW, int xInc,
- const int16_t *hLumFilter,
- const int32_t *hLumFilterPos,
- int hLumFilterSize,
- uint8_t *formatConvBuffer,
- uint32_t *pal, int isAlpha)
- {
- void (*toYV12)(uint8_t *, const uint8_t *, const uint8_t *, const uint8_t *, int, uint32_t *) =
- isAlpha ? c->alpToYV12 : c->lumToYV12;
- void (*convertRange)(int16_t *, int) = isAlpha ? NULL : c->lumConvertRange;
- const uint8_t *src = src_in[isAlpha ? 3 : 0];
- if (toYV12) {
- toYV12(formatConvBuffer, src, src_in[1], src_in[2], srcW, pal);
- src = formatConvBuffer;
- } else if (c->readLumPlanar && !isAlpha) {
- c->readLumPlanar(formatConvBuffer, src_in, srcW);
- src = formatConvBuffer;
- }
- if (!c->hyscale_fast) {
- c->hyScale(c, dst, dstWidth, src, hLumFilter,
- hLumFilterPos, hLumFilterSize);
- } else { // fast bilinear upscale / crap downscale
- c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc);
- }
- if (convertRange)
- convertRange(dst, dstWidth);
- }
- static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
- int dstWidth, const uint8_t *src1,
- const uint8_t *src2, int srcW, int xInc)
- {
- int i;
- unsigned int xpos = 0;
- for (i = 0; i < dstWidth; i++) {
- register unsigned int xx = xpos >> 16;
- register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
- dst1[i] = (src1[xx] * (xalpha ^ 127) + src1[xx + 1] * xalpha);
- dst2[i] = (src2[xx] * (xalpha ^ 127) + src2[xx + 1] * xalpha);
- xpos += xInc;
- }
- for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) {
- dst1[i] = src1[srcW-1]*128;
- dst2[i] = src2[srcW-1]*128;
- }
- }
- static av_always_inline void hcscale(SwsContext *c, int16_t *dst1,
- int16_t *dst2, int dstWidth,
- const uint8_t *src_in[4],
- int srcW, int xInc,
- const int16_t *hChrFilter,
- const int32_t *hChrFilterPos,
- int hChrFilterSize,
- uint8_t *formatConvBuffer, uint32_t *pal)
- {
- const uint8_t *src1 = src_in[1], *src2 = src_in[2];
- if (c->chrToYV12) {
- uint8_t *buf2 = formatConvBuffer +
- FFALIGN(srcW*2+78, 16);
- c->chrToYV12(formatConvBuffer, buf2, src_in[0], src1, src2, srcW, pal);
- src1= formatConvBuffer;
- src2= buf2;
- } else if (c->readChrPlanar) {
- uint8_t *buf2 = formatConvBuffer +
- FFALIGN(srcW*2+78, 16);
- c->readChrPlanar(formatConvBuffer, buf2, src_in, srcW);
- src1 = formatConvBuffer;
- src2 = buf2;
- }
- if (!c->hcscale_fast) {
- c->hcScale(c, dst1, dstWidth, src1, hChrFilter, hChrFilterPos, hChrFilterSize);
- c->hcScale(c, dst2, dstWidth, src2, hChrFilter, hChrFilterPos, hChrFilterSize);
- } else { // fast bilinear upscale / crap downscale
- c->hcscale_fast(c, dst1, dst2, dstWidth, src1, src2, srcW, xInc);
- }
- if (c->chrConvertRange)
- c->chrConvertRange(dst1, dst2, dstWidth);
- }
- #define DEBUG_SWSCALE_BUFFERS 0
- #define DEBUG_BUFFERS(...) \
- if (DEBUG_SWSCALE_BUFFERS) \
- av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
- static int swScale(SwsContext *c, const uint8_t *src[],
- int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t *dst[], int dstStride[])
- {
- /* load a few things into local vars to make the code more readable?
- * and faster */
- const int srcW = c->srcW;
- const int dstW = c->dstW;
- const int dstH = c->dstH;
- const int chrDstW = c->chrDstW;
- const int chrSrcW = c->chrSrcW;
- const int lumXInc = c->lumXInc;
- const int chrXInc = c->chrXInc;
- const enum PixelFormat dstFormat = c->dstFormat;
- const int flags = c->flags;
- int32_t *vLumFilterPos = c->vLumFilterPos;
- int32_t *vChrFilterPos = c->vChrFilterPos;
- int32_t *hLumFilterPos = c->hLumFilterPos;
- int32_t *hChrFilterPos = c->hChrFilterPos;
- int16_t *vLumFilter = c->vLumFilter;
- int16_t *vChrFilter = c->vChrFilter;
- int16_t *hLumFilter = c->hLumFilter;
- int16_t *hChrFilter = c->hChrFilter;
- int32_t *lumMmxFilter = c->lumMmxFilter;
- int32_t *chrMmxFilter = c->chrMmxFilter;
- const int vLumFilterSize = c->vLumFilterSize;
- const int vChrFilterSize = c->vChrFilterSize;
- const int hLumFilterSize = c->hLumFilterSize;
- const int hChrFilterSize = c->hChrFilterSize;
- int16_t **lumPixBuf = c->lumPixBuf;
- int16_t **chrUPixBuf = c->chrUPixBuf;
- int16_t **chrVPixBuf = c->chrVPixBuf;
- int16_t **alpPixBuf = c->alpPixBuf;
- const int vLumBufSize = c->vLumBufSize;
- const int vChrBufSize = c->vChrBufSize;
- uint8_t *formatConvBuffer = c->formatConvBuffer;
- uint32_t *pal = c->pal_yuv;
- yuv2planar1_fn yuv2plane1 = c->yuv2plane1;
- yuv2planarX_fn yuv2planeX = c->yuv2planeX;
- yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX;
- yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
- yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
- yuv2packedX_fn yuv2packedX = c->yuv2packedX;
- const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample;
- const int chrSrcSliceH = -((-srcSliceH) >> c->chrSrcVSubSample);
- int should_dither = is9_OR_10BPS(c->srcFormat) ||
- is16BPS(c->srcFormat);
- int lastDstY;
- /* vars which will change and which we need to store back in the context */
- int dstY = c->dstY;
- int lumBufIndex = c->lumBufIndex;
- int chrBufIndex = c->chrBufIndex;
- int lastInLumBuf = c->lastInLumBuf;
- int lastInChrBuf = c->lastInChrBuf;
- if (isPacked(c->srcFormat)) {
- src[0] =
- src[1] =
- src[2] =
- src[3] = src[0];
- srcStride[0] =
- srcStride[1] =
- srcStride[2] =
- srcStride[3] = srcStride[0];
- }
- srcStride[1] <<= c->vChrDrop;
- srcStride[2] <<= c->vChrDrop;
- DEBUG_BUFFERS("swScale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
- src[0], srcStride[0], src[1], srcStride[1],
- src[2], srcStride[2], src[3], srcStride[3],
- dst[0], dstStride[0], dst[1], dstStride[1],
- dst[2], dstStride[2], dst[3], dstStride[3]);
- DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
- srcSliceY, srcSliceH, dstY, dstH);
- DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n",
- vLumFilterSize, vLumBufSize, vChrFilterSize, vChrBufSize);
- if (dstStride[0]%16 !=0 || dstStride[1]%16 !=0 ||
- dstStride[2]%16 !=0 || dstStride[3]%16 != 0) {
- static int warnedAlready = 0; // FIXME maybe move this into the context
- if (flags & SWS_PRINT_INFO && !warnedAlready) {
- av_log(c, AV_LOG_WARNING,
- "Warning: dstStride is not aligned!\n"
- " ->cannot do aligned memory accesses anymore\n");
- warnedAlready = 1;
- }
- }
- if ((int)dst[0]%16 || (int)dst[1]%16 || (int)dst[2]%16 || (int)src[0]%16 || (int)src[1]%16 || (int)src[2]%16
- || dstStride[0]%16 || dstStride[1]%16 || dstStride[2]%16 || dstStride[3]%16
- || srcStride[0]%16 || srcStride[1]%16 || srcStride[2]%16 || srcStride[3]%16
- ) {
- static int warnedAlready=0;
- int cpu_flags = av_get_cpu_flags();
- if (HAVE_MMX2 && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){
- av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speedloss\n");
- warnedAlready=1;
- }
- }
- /* Note the user might start scaling the picture in the middle so this
- * will not get executed. This is not really intended but works
- * currently, so people might do it. */
- if (srcSliceY == 0) {
- lumBufIndex = -1;
- chrBufIndex = -1;
- dstY = 0;
- lastInLumBuf = -1;
- lastInChrBuf = -1;
- }
- if (!should_dither) {
- c->chrDither8 = c->lumDither8 = ff_sws_pb_64;
- }
- lastDstY = dstY;
- for (; dstY < dstH; dstY++) {
- const int chrDstY = dstY >> c->chrDstVSubSample;
- uint8_t *dest[4] = {
- dst[0] + dstStride[0] * dstY,
- dst[1] + dstStride[1] * chrDstY,
- dst[2] + dstStride[2] * chrDstY,
- (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3] + dstStride[3] * dstY : NULL,
- };
- int use_mmx_vfilter= c->use_mmx_vfilter;
- // First line needed as input
- const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]);
- const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), dstH - 1)]);
- // First line needed as input
- const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]);
- // Last line needed as input
- int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1;
- int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1;
- int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1;
- int enough_lines;
- // handle holes (FAST_BILINEAR & weird filters)
- if (firstLumSrcY > lastInLumBuf)
- lastInLumBuf = firstLumSrcY - 1;
- if (firstChrSrcY > lastInChrBuf)
- lastInChrBuf = firstChrSrcY - 1;
- assert(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
- assert(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);
- DEBUG_BUFFERS("dstY: %d\n", dstY);
- DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
- firstLumSrcY, lastLumSrcY, lastInLumBuf);
- DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
- firstChrSrcY, lastChrSrcY, lastInChrBuf);
- // Do we have enough lines in this slice to output the dstY line
- enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH &&
- lastChrSrcY < -((-srcSliceY - srcSliceH) >> c->chrSrcVSubSample);
- if (!enough_lines) {
- lastLumSrcY = srcSliceY + srcSliceH - 1;
- lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
- DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
- lastLumSrcY, lastChrSrcY);
- }
- // Do horizontal scaling
- while (lastInLumBuf < lastLumSrcY) {
- const uint8_t *src1[4] = {
- src[0] + (lastInLumBuf + 1 - srcSliceY) * srcStride[0],
- src[1] + (lastInLumBuf + 1 - srcSliceY) * srcStride[1],
- src[2] + (lastInLumBuf + 1 - srcSliceY) * srcStride[2],
- src[3] + (lastInLumBuf + 1 - srcSliceY) * srcStride[3],
- };
- lumBufIndex++;
- assert(lumBufIndex < 2 * vLumBufSize);
- assert(lastInLumBuf + 1 - srcSliceY < srcSliceH);
- assert(lastInLumBuf + 1 - srcSliceY >= 0);
- hyscale(c, lumPixBuf[lumBufIndex], dstW, src1, srcW, lumXInc,
- hLumFilter, hLumFilterPos, hLumFilterSize,
- formatConvBuffer, pal, 0);
- if (CONFIG_SWSCALE_ALPHA && alpPixBuf)
- hyscale(c, alpPixBuf[lumBufIndex], dstW, src1, srcW,
- lumXInc, hLumFilter, hLumFilterPos, hLumFilterSize,
- formatConvBuffer, pal, 1);
- lastInLumBuf++;
- DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n",
- lumBufIndex, lastInLumBuf);
- }
- while (lastInChrBuf < lastChrSrcY) {
- const uint8_t *src1[4] = {
- src[0] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[0],
- src[1] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[1],
- src[2] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[2],
- src[3] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[3],
- };
- chrBufIndex++;
- assert(chrBufIndex < 2 * vChrBufSize);
- assert(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
- assert(lastInChrBuf + 1 - chrSrcSliceY >= 0);
- // FIXME replace parameters through context struct (some at least)
- if (c->needs_hcscale)
- hcscale(c, chrUPixBuf[chrBufIndex], chrVPixBuf[chrBufIndex],
- chrDstW, src1, chrSrcW, chrXInc,
- hChrFilter, hChrFilterPos, hChrFilterSize,
- formatConvBuffer, pal);
- lastInChrBuf++;
- DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n",
- chrBufIndex, lastInChrBuf);
- }
- // wrap buf index around to stay inside the ring buffer
- if (lumBufIndex >= vLumBufSize)
- lumBufIndex -= vLumBufSize;
- if (chrBufIndex >= vChrBufSize)
- chrBufIndex -= vChrBufSize;
- if (!enough_lines)
- break; // we can't output a dstY line so let's try with the next slice
- #if HAVE_MMX
- updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
- lastInLumBuf, lastInChrBuf);
- #endif
- if (should_dither) {
- c->chrDither8 = dither_8x8_128[chrDstY & 7];
- c->lumDither8 = dither_8x8_128[dstY & 7];
- }
- if (dstY >= dstH - 2) {
- /* hmm looks like we can't use MMX here without overwriting
- * this array's tail */
- ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX,
- &yuv2packed1, &yuv2packed2, &yuv2packedX);
- use_mmx_vfilter= 0;
- }
- {
- const int16_t **lumSrcPtr = (const int16_t **)(void*) lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
- const int16_t **chrUSrcPtr = (const int16_t **)(void*) chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
- const int16_t **chrVSrcPtr = (const int16_t **)(void*) chrVPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
- const int16_t **alpSrcPtr = (CONFIG_SWSCALE_ALPHA && alpPixBuf) ?
- (const int16_t **)(void*) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
- int16_t *vLumFilter = c->vLumFilter;
- int16_t *vChrFilter = c->vChrFilter;
- if (isPlanarYUV(dstFormat) ||
- (isGray(dstFormat) && !isALPHA(dstFormat))) { // YV12 like
- const int chrSkipMask = (1 << c->chrDstVSubSample) - 1;
- vLumFilter += dstY * vLumFilterSize;
- vChrFilter += chrDstY * vChrFilterSize;
- // av_assert0(use_mmx_vfilter != (
- // yuv2planeX == yuv2planeX_10BE_c
- // || yuv2planeX == yuv2planeX_10LE_c
- // || yuv2planeX == yuv2planeX_9BE_c
- // || yuv2planeX == yuv2planeX_9LE_c
- // || yuv2planeX == yuv2planeX_16BE_c
- // || yuv2planeX == yuv2planeX_16LE_c
- // || yuv2planeX == yuv2planeX_8_c) || !ARCH_X86);
- if(use_mmx_vfilter){
- vLumFilter= c->lumMmxFilter;
- vChrFilter= c->chrMmxFilter;
- }
- if (vLumFilterSize == 1) {
- yuv2plane1(lumSrcPtr[0], dest[0], dstW, c->lumDither8, 0);
- } else {
- yuv2planeX(vLumFilter, vLumFilterSize,
- lumSrcPtr, dest[0],
- dstW, c->lumDither8, 0);
- }
- if (!((dstY & chrSkipMask) || isGray(dstFormat))) {
- if (yuv2nv12cX) {
- yuv2nv12cX(c, vChrFilter,
- vChrFilterSize, chrUSrcPtr, chrVSrcPtr,
- dest[1], chrDstW);
- } else if (vChrFilterSize == 1) {
- yuv2plane1(chrUSrcPtr[0], dest[1], chrDstW, c->chrDither8, 0);
- yuv2plane1(chrVSrcPtr[0], dest[2], chrDstW, c->chrDither8, 3);
- } else {
- yuv2planeX(vChrFilter,
- vChrFilterSize, chrUSrcPtr, dest[1],
- chrDstW, c->chrDither8, 0);
- yuv2planeX(vChrFilter,
- vChrFilterSize, chrVSrcPtr, dest[2],
- chrDstW, c->chrDither8, use_mmx_vfilter ? (c->uv_offx2 >> 1) : 3);
- }
- }
- if (CONFIG_SWSCALE_ALPHA && alpPixBuf) {
- if(use_mmx_vfilter){
- vLumFilter= c->alpMmxFilter;
- }
- if (vLumFilterSize == 1) {
- yuv2plane1(alpSrcPtr[0], dest[3], dstW,
- c->lumDither8, 0);
- } else {
- yuv2planeX(vLumFilter,
- vLumFilterSize, alpSrcPtr, dest[3],
- dstW, c->lumDither8, 0);
- }
- }
- } else {
- assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize * 2);
- assert(chrUSrcPtr + vChrFilterSize - 1 < chrUPixBuf + vChrBufSize * 2);
- if (c->yuv2packed1 && vLumFilterSize == 1 &&
- vChrFilterSize <= 2) { // unscaled RGB
- int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1];
- yuv2packed1(c, *lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
- alpPixBuf ? *alpSrcPtr : NULL,
- dest[0], dstW, chrAlpha, dstY);
- } else if (c->yuv2packed2 && vLumFilterSize == 2 &&
- vChrFilterSize == 2) { // bilinear upscale RGB
- int lumAlpha = vLumFilter[2 * dstY + 1];
- int chrAlpha = vChrFilter[2 * dstY + 1];
- lumMmxFilter[2] =
- lumMmxFilter[3] = vLumFilter[2 * dstY] * 0x10001;
- chrMmxFilter[2] =
- chrMmxFilter[3] = vChrFilter[2 * chrDstY] * 0x10001;
- yuv2packed2(c, lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
- alpPixBuf ? alpSrcPtr : NULL,
- dest[0], dstW, lumAlpha, chrAlpha, dstY);
- } else { // general RGB
- yuv2packedX(c, vLumFilter + dstY * vLumFilterSize,
- lumSrcPtr, vLumFilterSize,
- vChrFilter + dstY * vChrFilterSize,
- chrUSrcPtr, chrVSrcPtr, vChrFilterSize,
- alpSrcPtr, dest[0], dstW, dstY);
- }
- }
- }
- }
- if (isPlanar(dstFormat) && isALPHA(dstFormat) && !alpPixBuf)
- fillPlane(dst[3], dstStride[3], dstW, dstY - lastDstY, lastDstY, 255);
- #if HAVE_MMX2
- if (av_get_cpu_flags() & AV_CPU_FLAG_MMX2)
- __asm__ volatile ("sfence" ::: "memory");
- #endif
- emms_c();
- /* store changed local vars back in the context */
- c->dstY = dstY;
- c->lumBufIndex = lumBufIndex;
- c->chrBufIndex = chrBufIndex;
- c->lastInLumBuf = lastInLumBuf;
- c->lastInChrBuf = lastInChrBuf;
- return dstY - lastDstY;
- }
- static av_cold void sws_init_swScale_c(SwsContext *c)
- {
- enum PixelFormat srcFormat = c->srcFormat;
- ff_sws_init_output_funcs(c, &c->yuv2plane1, &c->yuv2planeX,
- &c->yuv2nv12cX, &c->yuv2packed1,
- &c->yuv2packed2, &c->yuv2packedX);
- ff_sws_init_input_funcs(c);
- if (c->srcBpc == 8) {
- if (c->dstBpc <= 10) {
- c->hyScale = c->hcScale = hScale8To15_c;
- if (c->flags & SWS_FAST_BILINEAR) {
- c->hyscale_fast = hyscale_fast_c;
- c->hcscale_fast = hcscale_fast_c;
- }
- } else {
- c->hyScale = c->hcScale = hScale8To19_c;
- }
- } else {
- c->hyScale = c->hcScale = c->dstBpc > 10 ? hScale16To19_c
- : hScale16To15_c;
- }
- if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
- if (c->dstBpc <= 10) {
- if (c->srcRange) {
- c->lumConvertRange = lumRangeFromJpeg_c;
- c->chrConvertRange = chrRangeFromJpeg_c;
- } else {
- c->lumConvertRange = lumRangeToJpeg_c;
- c->chrConvertRange = chrRangeToJpeg_c;
- }
- } else {
- if (c->srcRange) {
- c->lumConvertRange = lumRangeFromJpeg16_c;
- c->chrConvertRange = chrRangeFromJpeg16_c;
- } else {
- c->lumConvertRange = lumRangeToJpeg16_c;
- c->chrConvertRange = chrRangeToJpeg16_c;
- }
- }
- }
- if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
- srcFormat == PIX_FMT_MONOBLACK || srcFormat == PIX_FMT_MONOWHITE))
- c->needs_hcscale = 1;
- }
- SwsFunc ff_getSwsFunc(SwsContext *c)
- {
- sws_init_swScale_c(c);
- if (HAVE_MMX)
- ff_sws_init_swScale_mmx(c);
- if (HAVE_ALTIVEC)
- ff_sws_init_swScale_altivec(c);
- return swScale;
- }
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