| /* |
| * 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 <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/imgutils.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, ff_dither_8x8_128)[9][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, }, |
| { 36, 68, 60, 92, 34, 66, 58, 90, }, |
| }; |
| |
| DECLARE_ALIGNED(8, static const uint8_t, 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) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat); |
| int i; |
| int32_t *dst = (int32_t *) _dst; |
| const uint16_t *src = (const uint16_t *) _src; |
| int bits = desc->comp[0].depth - 1; |
| int sh = bits - 4; |
| |
| if ((isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8) && desc->comp[0].depth<16) { |
| sh = 9; |
| } else if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) { /* float input are process like uint 16bpc */ |
| sh = 16 - 1 - 4; |
| } |
| |
| 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) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat); |
| int i; |
| const uint16_t *src = (const uint16_t *) _src; |
| int sh = desc->comp[0].depth - 1; |
| |
| if (sh<15) { |
| sh = isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8 ? 13 : (desc->comp[0].depth - 1); |
| } else if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) { /* float input are process like uint 16bpc */ |
| sh = 16 - 1; |
| } |
| |
| 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 conversion 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] = ((int)(FFMIN(dst[i], 30189 << 4) * 4769U - (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; |
| } |
| |
| |
| #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 dstW = c->dstW; |
| const int dstH = c->dstH; |
| |
| const enum AVPixelFormat dstFormat = c->dstFormat; |
| const int flags = c->flags; |
| int32_t *vLumFilterPos = c->vLumFilterPos; |
| int32_t *vChrFilterPos = c->vChrFilterPos; |
| |
| const int vLumFilterSize = c->vLumFilterSize; |
| const int vChrFilterSize = c->vChrFilterSize; |
| |
| 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; |
| yuv2anyX_fn yuv2anyX = c->yuv2anyX; |
| const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample; |
| const int chrSrcSliceH = AV_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample); |
| int should_dither = isNBPS(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 lastInLumBuf = c->lastInLumBuf; |
| int lastInChrBuf = c->lastInChrBuf; |
| |
| int lumStart = 0; |
| int lumEnd = c->descIndex[0]; |
| int chrStart = lumEnd; |
| int chrEnd = c->descIndex[1]; |
| int vStart = chrEnd; |
| int vEnd = c->numDesc; |
| SwsSlice *src_slice = &c->slice[lumStart]; |
| SwsSlice *hout_slice = &c->slice[c->numSlice-2]; |
| SwsSlice *vout_slice = &c->slice[c->numSlice-1]; |
| SwsFilterDescriptor *desc = c->desc; |
| |
| int needAlpha = c->needAlpha; |
| |
| int hasLumHoles = 1; |
| int hasChrHoles = 1; |
| |
| if (isPacked(c->srcFormat)) { |
| src[1] = |
| src[2] = |
| src[3] = src[0]; |
| srcStride[1] = |
| srcStride[2] = |
| srcStride[3] = srcStride[0]; |
| } |
| srcStride[1] *= 1 << c->vChrDrop; |
| srcStride[2] *= 1 << 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 vChrFilterSize: %d\n", |
| vLumFilterSize, vChrFilterSize); |
| |
| if (dstStride[0]&15 || dstStride[1]&15 || |
| dstStride[2]&15 || dstStride[3]&15) { |
| 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 ( (uintptr_t)dst[0]&15 || (uintptr_t)dst[1]&15 || (uintptr_t)dst[2]&15 |
| || (uintptr_t)src[0]&15 || (uintptr_t)src[1]&15 || (uintptr_t)src[2]&15 |
| || dstStride[0]&15 || dstStride[1]&15 || dstStride[2]&15 || dstStride[3]&15 |
| || srcStride[0]&15 || srcStride[1]&15 || srcStride[2]&15 || srcStride[3]&15 |
| ) { |
| static int warnedAlready=0; |
| int cpu_flags = av_get_cpu_flags(); |
| if (HAVE_MMXEXT && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){ |
| av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speed loss\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) { |
| dstY = 0; |
| lastInLumBuf = -1; |
| lastInChrBuf = -1; |
| } |
| |
| if (!should_dither) { |
| c->chrDither8 = c->lumDither8 = sws_pb_64; |
| } |
| lastDstY = dstY; |
| |
| ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX, |
| yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, c->use_mmx_vfilter); |
| |
| ff_init_slice_from_src(src_slice, (uint8_t**)src, srcStride, c->srcW, |
| srcSliceY, srcSliceH, chrSrcSliceY, chrSrcSliceH, 1); |
| |
| ff_init_slice_from_src(vout_slice, (uint8_t**)dst, dstStride, c->dstW, |
| dstY, dstH, dstY >> c->chrDstVSubSample, |
| AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample), 0); |
| if (srcSliceY == 0) { |
| hout_slice->plane[0].sliceY = lastInLumBuf + 1; |
| hout_slice->plane[1].sliceY = lastInChrBuf + 1; |
| hout_slice->plane[2].sliceY = lastInChrBuf + 1; |
| hout_slice->plane[3].sliceY = lastInLumBuf + 1; |
| |
| hout_slice->plane[0].sliceH = |
| hout_slice->plane[1].sliceH = |
| hout_slice->plane[2].sliceH = |
| hout_slice->plane[3].sliceH = 0; |
| hout_slice->width = dstW; |
| } |
| |
| for (; dstY < dstH; dstY++) { |
| const int chrDstY = dstY >> c->chrDstVSubSample; |
| 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; |
| |
| int i; |
| int posY, cPosY, firstPosY, lastPosY, firstCPosY, lastCPosY; |
| |
| // handle holes (FAST_BILINEAR & weird filters) |
| if (firstLumSrcY > lastInLumBuf) { |
| |
| hasLumHoles = lastInLumBuf != firstLumSrcY - 1; |
| if (hasLumHoles) { |
| hout_slice->plane[0].sliceY = firstLumSrcY; |
| hout_slice->plane[3].sliceY = firstLumSrcY; |
| hout_slice->plane[0].sliceH = |
| hout_slice->plane[3].sliceH = 0; |
| } |
| |
| lastInLumBuf = firstLumSrcY - 1; |
| } |
| if (firstChrSrcY > lastInChrBuf) { |
| |
| hasChrHoles = lastInChrBuf != firstChrSrcY - 1; |
| if (hasChrHoles) { |
| hout_slice->plane[1].sliceY = firstChrSrcY; |
| hout_slice->plane[2].sliceY = firstChrSrcY; |
| hout_slice->plane[1].sliceH = |
| hout_slice->plane[2].sliceH = 0; |
| } |
| |
| lastInChrBuf = firstChrSrcY - 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 < AV_CEIL_RSHIFT(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); |
| } |
| |
| av_assert0((lastLumSrcY - firstLumSrcY + 1) <= hout_slice->plane[0].available_lines); |
| av_assert0((lastChrSrcY - firstChrSrcY + 1) <= hout_slice->plane[1].available_lines); |
| |
| |
| posY = hout_slice->plane[0].sliceY + hout_slice->plane[0].sliceH; |
| if (posY <= lastLumSrcY && !hasLumHoles) { |
| firstPosY = FFMAX(firstLumSrcY, posY); |
| lastPosY = FFMIN(firstLumSrcY + hout_slice->plane[0].available_lines - 1, srcSliceY + srcSliceH - 1); |
| } else { |
| firstPosY = posY; |
| lastPosY = lastLumSrcY; |
| } |
| |
| cPosY = hout_slice->plane[1].sliceY + hout_slice->plane[1].sliceH; |
| if (cPosY <= lastChrSrcY && !hasChrHoles) { |
| firstCPosY = FFMAX(firstChrSrcY, cPosY); |
| lastCPosY = FFMIN(firstChrSrcY + hout_slice->plane[1].available_lines - 1, AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample) - 1); |
| } else { |
| firstCPosY = cPosY; |
| lastCPosY = lastChrSrcY; |
| } |
| |
| ff_rotate_slice(hout_slice, lastPosY, lastCPosY); |
| |
| if (posY < lastLumSrcY + 1) { |
| for (i = lumStart; i < lumEnd; ++i) |
| desc[i].process(c, &desc[i], firstPosY, lastPosY - firstPosY + 1); |
| } |
| |
| lastInLumBuf = lastLumSrcY; |
| |
| if (cPosY < lastChrSrcY + 1) { |
| for (i = chrStart; i < chrEnd; ++i) |
| desc[i].process(c, &desc[i], firstCPosY, lastCPosY - firstCPosY + 1); |
| } |
| |
| lastInChrBuf = lastChrSrcY; |
| |
| if (!enough_lines) |
| break; // we can't output a dstY line so let's try with the next slice |
| |
| #if HAVE_MMX_INLINE |
| ff_updateMMXDitherTables(c, dstY); |
| #endif |
| if (should_dither) { |
| c->chrDither8 = ff_dither_8x8_128[chrDstY & 7]; |
| c->lumDither8 = ff_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, &yuv2anyX); |
| use_mmx_vfilter= 0; |
| ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX, |
| yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, use_mmx_vfilter); |
| } |
| |
| { |
| for (i = vStart; i < vEnd; ++i) |
| desc[i].process(c, &desc[i], dstY, 1); |
| } |
| } |
| if (isPlanar(dstFormat) && isALPHA(dstFormat) && !needAlpha) { |
| int length = dstW; |
| int height = dstY - lastDstY; |
| |
| if (is16BPS(dstFormat) || isNBPS(dstFormat)) { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat); |
| fillPlane16(dst[3], dstStride[3], length, height, lastDstY, |
| 1, desc->comp[3].depth, |
| isBE(dstFormat)); |
| } else if (is32BPS(dstFormat)) { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat); |
| fillPlane32(dst[3], dstStride[3], length, height, lastDstY, |
| 1, desc->comp[3].depth, |
| isBE(dstFormat), desc->flags & AV_PIX_FMT_FLAG_FLOAT); |
| } else |
| fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255); |
| } |
| |
| #if HAVE_MMXEXT_INLINE |
| if (av_get_cpu_flags() & AV_CPU_FLAG_MMXEXT) |
| __asm__ volatile ("sfence" ::: "memory"); |
| #endif |
| emms_c(); |
| |
| /* store changed local vars back in the context */ |
| c->dstY = dstY; |
| c->lastInLumBuf = lastInLumBuf; |
| c->lastInChrBuf = lastInChrBuf; |
| |
| return dstY - lastDstY; |
| } |
| |
| av_cold void ff_sws_init_range_convert(SwsContext *c) |
| { |
| c->lumConvertRange = NULL; |
| c->chrConvertRange = NULL; |
| if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) { |
| if (c->dstBpc <= 14) { |
| 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; |
| } |
| } |
| } |
| } |
| |
| static av_cold void sws_init_swscale(SwsContext *c) |
| { |
| enum AVPixelFormat srcFormat = c->srcFormat; |
| |
| ff_sws_init_output_funcs(c, &c->yuv2plane1, &c->yuv2planeX, |
| &c->yuv2nv12cX, &c->yuv2packed1, |
| &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX); |
| |
| ff_sws_init_input_funcs(c); |
| |
| if (c->srcBpc == 8) { |
| if (c->dstBpc <= 14) { |
| c->hyScale = c->hcScale = hScale8To15_c; |
| if (c->flags & SWS_FAST_BILINEAR) { |
| c->hyscale_fast = ff_hyscale_fast_c; |
| c->hcscale_fast = ff_hcscale_fast_c; |
| } |
| } else { |
| c->hyScale = c->hcScale = hScale8To19_c; |
| } |
| } else { |
| c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c |
| : hScale16To15_c; |
| } |
| |
| ff_sws_init_range_convert(c); |
| |
| if (!(isGray(srcFormat) || isGray(c->dstFormat) || |
| srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE)) |
| c->needs_hcscale = 1; |
| } |
| |
| SwsFunc ff_getSwsFunc(SwsContext *c) |
| { |
| sws_init_swscale(c); |
| |
| if (ARCH_PPC) |
| ff_sws_init_swscale_ppc(c); |
| if (ARCH_X86) |
| ff_sws_init_swscale_x86(c); |
| if (ARCH_AARCH64) |
| ff_sws_init_swscale_aarch64(c); |
| if (ARCH_ARM) |
| ff_sws_init_swscale_arm(c); |
| |
| return swscale; |
| } |
| |
| static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format) |
| { |
| if (!isALPHA(format)) |
| src[3] = NULL; |
| if (!isPlanar(format)) { |
| src[3] = src[2] = NULL; |
| |
| if (!usePal(format)) |
| src[1] = NULL; |
| } |
| } |
| |
| static int check_image_pointers(const uint8_t * const data[4], enum AVPixelFormat pix_fmt, |
| const int linesizes[4]) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| int i; |
| |
| av_assert2(desc); |
| |
| for (i = 0; i < 4; i++) { |
| int plane = desc->comp[i].plane; |
| if (!data[plane] || !linesizes[plane]) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst, |
| const uint16_t *src, int stride, int h) |
| { |
| int xp,yp; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat); |
| |
| for (yp=0; yp<h; yp++) { |
| for (xp=0; xp+2<stride; xp+=3) { |
| int x, y, z, r, g, b; |
| |
| if (desc->flags & AV_PIX_FMT_FLAG_BE) { |
| x = AV_RB16(src + xp + 0); |
| y = AV_RB16(src + xp + 1); |
| z = AV_RB16(src + xp + 2); |
| } else { |
| x = AV_RL16(src + xp + 0); |
| y = AV_RL16(src + xp + 1); |
| z = AV_RL16(src + xp + 2); |
| } |
| |
| x = c->xyzgamma[x>>4]; |
| y = c->xyzgamma[y>>4]; |
| z = c->xyzgamma[z>>4]; |
| |
| // convert from XYZlinear to sRGBlinear |
| r = c->xyz2rgb_matrix[0][0] * x + |
| c->xyz2rgb_matrix[0][1] * y + |
| c->xyz2rgb_matrix[0][2] * z >> 12; |
| g = c->xyz2rgb_matrix[1][0] * x + |
| c->xyz2rgb_matrix[1][1] * y + |
| c->xyz2rgb_matrix[1][2] * z >> 12; |
| b = c->xyz2rgb_matrix[2][0] * x + |
| c->xyz2rgb_matrix[2][1] * y + |
| c->xyz2rgb_matrix[2][2] * z >> 12; |
| |
| // limit values to 12-bit depth |
| r = av_clip_uintp2(r, 12); |
| g = av_clip_uintp2(g, 12); |
| b = av_clip_uintp2(b, 12); |
| |
| // convert from sRGBlinear to RGB and scale from 12bit to 16bit |
| if (desc->flags & AV_PIX_FMT_FLAG_BE) { |
| AV_WB16(dst + xp + 0, c->rgbgamma[r] << 4); |
| AV_WB16(dst + xp + 1, c->rgbgamma[g] << 4); |
| AV_WB16(dst + xp + 2, c->rgbgamma[b] << 4); |
| } else { |
| AV_WL16(dst + xp + 0, c->rgbgamma[r] << 4); |
| AV_WL16(dst + xp + 1, c->rgbgamma[g] << 4); |
| AV_WL16(dst + xp + 2, c->rgbgamma[b] << 4); |
| } |
| } |
| src += stride; |
| dst += stride; |
| } |
| } |
| |
| static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst, |
| const uint16_t *src, int stride, int h) |
| { |
| int xp,yp; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->dstFormat); |
| |
| for (yp=0; yp<h; yp++) { |
| for (xp=0; xp+2<stride; xp+=3) { |
| int x, y, z, r, g, b; |
| |
| if (desc->flags & AV_PIX_FMT_FLAG_BE) { |
| r = AV_RB16(src + xp + 0); |
| g = AV_RB16(src + xp + 1); |
| b = AV_RB16(src + xp + 2); |
| } else { |
| r = AV_RL16(src + xp + 0); |
| g = AV_RL16(src + xp + 1); |
| b = AV_RL16(src + xp + 2); |
| } |
| |
| r = c->rgbgammainv[r>>4]; |
| g = c->rgbgammainv[g>>4]; |
| b = c->rgbgammainv[b>>4]; |
| |
| // convert from sRGBlinear to XYZlinear |
| x = c->rgb2xyz_matrix[0][0] * r + |
| c->rgb2xyz_matrix[0][1] * g + |
| c->rgb2xyz_matrix[0][2] * b >> 12; |
| y = c->rgb2xyz_matrix[1][0] * r + |
| c->rgb2xyz_matrix[1][1] * g + |
| c->rgb2xyz_matrix[1][2] * b >> 12; |
| z = c->rgb2xyz_matrix[2][0] * r + |
| c->rgb2xyz_matrix[2][1] * g + |
| c->rgb2xyz_matrix[2][2] * b >> 12; |
| |
| // limit values to 12-bit depth |
| x = av_clip_uintp2(x, 12); |
| y = av_clip_uintp2(y, 12); |
| z = av_clip_uintp2(z, 12); |
| |
| // convert from XYZlinear to X'Y'Z' and scale from 12bit to 16bit |
| if (desc->flags & AV_PIX_FMT_FLAG_BE) { |
| AV_WB16(dst + xp + 0, c->xyzgammainv[x] << 4); |
| AV_WB16(dst + xp + 1, c->xyzgammainv[y] << 4); |
| AV_WB16(dst + xp + 2, c->xyzgammainv[z] << 4); |
| } else { |
| AV_WL16(dst + xp + 0, c->xyzgammainv[x] << 4); |
| AV_WL16(dst + xp + 1, c->xyzgammainv[y] << 4); |
| AV_WL16(dst + xp + 2, c->xyzgammainv[z] << 4); |
| } |
| } |
| src += stride; |
| dst += stride; |
| } |
| } |
| |
| /** |
| * swscale wrapper, so we don't need to export the SwsContext. |
| * Assumes planar YUV to be in YUV order instead of YVU. |
| */ |
| int attribute_align_arg sws_scale(struct SwsContext *c, |
| const uint8_t * const srcSlice[], |
| const int srcStride[], int srcSliceY, |
| int srcSliceH, uint8_t *const dst[], |
| const int dstStride[]) |
| { |
| int i, ret; |
| const uint8_t *src2[4]; |
| uint8_t *dst2[4]; |
| uint8_t *rgb0_tmp = NULL; |
| int macro_height = isBayer(c->srcFormat) ? 2 : (1 << c->chrSrcVSubSample); |
| // copy strides, so they can safely be modified |
| int srcStride2[4]; |
| int dstStride2[4]; |
| int srcSliceY_internal = srcSliceY; |
| |
| if (!srcStride || !dstStride || !dst || !srcSlice) { |
| av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is NULL, please check the calling code\n"); |
| return 0; |
| } |
| |
| for (i=0; i<4; i++) { |
| srcStride2[i] = srcStride[i]; |
| dstStride2[i] = dstStride[i]; |
| } |
| |
| if ((srcSliceY & (macro_height-1)) || |
| ((srcSliceH& (macro_height-1)) && srcSliceY + srcSliceH != c->srcH) || |
| srcSliceY + srcSliceH > c->srcH) { |
| av_log(c, AV_LOG_ERROR, "Slice parameters %d, %d are invalid\n", srcSliceY, srcSliceH); |
| return AVERROR(EINVAL); |
| } |
| |
| if (c->gamma_flag && c->cascaded_context[0]) { |
| ret = sws_scale(c->cascaded_context[0], |
| srcSlice, srcStride, srcSliceY, srcSliceH, |
| c->cascaded_tmp, c->cascaded_tmpStride); |
| |
| if (ret < 0) |
| return ret; |
| |
| if (c->cascaded_context[2]) |
| ret = sws_scale(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp, c->cascaded_tmpStride, srcSliceY, srcSliceH, c->cascaded1_tmp, c->cascaded1_tmpStride); |
| else |
| ret = sws_scale(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp, c->cascaded_tmpStride, srcSliceY, srcSliceH, dst, dstStride); |
| |
| if (ret < 0) |
| return ret; |
| |
| if (c->cascaded_context[2]) { |
| ret = sws_scale(c->cascaded_context[2], |
| (const uint8_t * const *)c->cascaded1_tmp, c->cascaded1_tmpStride, c->cascaded_context[1]->dstY - ret, c->cascaded_context[1]->dstY, |
| dst, dstStride); |
| } |
| return ret; |
| } |
| |
| if (c->cascaded_context[0] && srcSliceY == 0 && srcSliceH == c->cascaded_context[0]->srcH) { |
| ret = sws_scale(c->cascaded_context[0], |
| srcSlice, srcStride, srcSliceY, srcSliceH, |
| c->cascaded_tmp, c->cascaded_tmpStride); |
| if (ret < 0) |
| return ret; |
| ret = sws_scale(c->cascaded_context[1], |
| (const uint8_t * const * )c->cascaded_tmp, c->cascaded_tmpStride, 0, c->cascaded_context[0]->dstH, |
| dst, dstStride); |
| return ret; |
| } |
| |
| memcpy(src2, srcSlice, sizeof(src2)); |
| memcpy(dst2, dst, sizeof(dst2)); |
| |
| // do not mess up sliceDir if we have a "trailing" 0-size slice |
| if (srcSliceH == 0) |
| return 0; |
| |
| if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) { |
| av_log(c, AV_LOG_ERROR, "bad src image pointers\n"); |
| return 0; |
| } |
| if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) { |
| av_log(c, AV_LOG_ERROR, "bad dst image pointers\n"); |
| return 0; |
| } |
| |
| if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) { |
| av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n"); |
| return 0; |
| } |
| if (c->sliceDir == 0) { |
| if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1; |
| } |
| |
| if (usePal(c->srcFormat)) { |
| for (i = 0; i < 256; i++) { |
| int r, g, b, y, u, v, a = 0xff; |
| if (c->srcFormat == AV_PIX_FMT_PAL8) { |
| uint32_t p = ((const uint32_t *)(srcSlice[1]))[i]; |
| a = (p >> 24) & 0xFF; |
| r = (p >> 16) & 0xFF; |
| g = (p >> 8) & 0xFF; |
| b = p & 0xFF; |
| } else if (c->srcFormat == AV_PIX_FMT_RGB8) { |
| r = ( i >> 5 ) * 36; |
| g = ((i >> 2) & 7) * 36; |
| b = ( i & 3) * 85; |
| } else if (c->srcFormat == AV_PIX_FMT_BGR8) { |
| b = ( i >> 6 ) * 85; |
| g = ((i >> 3) & 7) * 36; |
| r = ( i & 7) * 36; |
| } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) { |
| r = ( i >> 3 ) * 255; |
| g = ((i >> 1) & 3) * 85; |
| b = ( i & 1) * 255; |
| } else if (c->srcFormat == AV_PIX_FMT_GRAY8 || c->srcFormat == AV_PIX_FMT_GRAY8A) { |
| r = g = b = i; |
| } else { |
| av_assert1(c->srcFormat == AV_PIX_FMT_BGR4_BYTE); |
| b = ( i >> 3 ) * 255; |
| g = ((i >> 1) & 3) * 85; |
| r = ( i & 1) * 255; |
| } |
| #define RGB2YUV_SHIFT 15 |
| #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) |
| |
| y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT); |
| u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT); |
| v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT); |
| c->pal_yuv[i]= y + (u<<8) + (v<<16) + ((unsigned)a<<24); |
| |
| switch (c->dstFormat) { |
| case AV_PIX_FMT_BGR32: |
| #if !HAVE_BIGENDIAN |
| case AV_PIX_FMT_RGB24: |
| #endif |
| c->pal_rgb[i]= r + (g<<8) + (b<<16) + ((unsigned)a<<24); |
| break; |
| case AV_PIX_FMT_BGR32_1: |
| #if HAVE_BIGENDIAN |
| case AV_PIX_FMT_BGR24: |
| #endif |
| c->pal_rgb[i]= a + (r<<8) + (g<<16) + ((unsigned)b<<24); |
| break; |
| case AV_PIX_FMT_RGB32_1: |
| #if HAVE_BIGENDIAN |
| case AV_PIX_FMT_RGB24: |
| #endif |
| c->pal_rgb[i]= a + (b<<8) + (g<<16) + ((unsigned)r<<24); |
| break; |
| case AV_PIX_FMT_RGB32: |
| #if !HAVE_BIGENDIAN |
| case AV_PIX_FMT_BGR24: |
| #endif |
| default: |
| c->pal_rgb[i]= b + (g<<8) + (r<<16) + ((unsigned)a<<24); |
| } |
| } |
| } |
| |
| if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) { |
| uint8_t *base; |
| int x,y; |
| rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32); |
| if (!rgb0_tmp) |
| return AVERROR(ENOMEM); |
| |
| base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp; |
| for (y=0; y<srcSliceH; y++){ |
| memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW); |
| for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) { |
| base[ srcStride[0]*y + x] = 0xFF; |
| } |
| } |
| src2[0] = base; |
| } |
| |
| if (c->srcXYZ && !(c->dstXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) { |
| uint8_t *base; |
| rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32); |
| if (!rgb0_tmp) |
| return AVERROR(ENOMEM); |
| |
| base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp; |
| |
| xyz12Torgb48(c, (uint16_t*)base, (const uint16_t*)src2[0], srcStride[0]/2, srcSliceH); |
| src2[0] = base; |
| } |
| |
| if (!srcSliceY && (c->flags & SWS_BITEXACT) && c->dither == SWS_DITHER_ED && c->dither_error[0]) |
| for (i = 0; i < 4; i++) |
| memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2)); |
| |
| if (c->sliceDir != 1) { |
| // slices go from bottom to top => we flip the image internally |
| for (i=0; i<4; i++) { |
| srcStride2[i] *= -1; |
| dstStride2[i] *= -1; |
| } |
| |
| src2[0] += (srcSliceH - 1) * srcStride[0]; |
| if (!usePal(c->srcFormat)) |
| src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1]; |
| src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2]; |
| src2[3] += (srcSliceH - 1) * srcStride[3]; |
| dst2[0] += ( c->dstH - 1) * dstStride[0]; |
| dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1]; |
| dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2]; |
| dst2[3] += ( c->dstH - 1) * dstStride[3]; |
| |
| srcSliceY_internal = c->srcH-srcSliceY-srcSliceH; |
| } |
| reset_ptr(src2, c->srcFormat); |
| reset_ptr((void*)dst2, c->dstFormat); |
| |
| /* reset slice direction at end of frame */ |
| if (srcSliceY_internal + srcSliceH == c->srcH) |
| c->sliceDir = 0; |
| ret = c->swscale(c, src2, srcStride2, srcSliceY_internal, srcSliceH, dst2, dstStride2); |
| |
| if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) { |
| int dstY = c->dstY ? c->dstY : srcSliceY + srcSliceH; |
| uint16_t *dst16 = (uint16_t*)(dst2[0] + (dstY - ret) * dstStride2[0]); |
| av_assert0(dstY >= ret); |
| av_assert0(ret >= 0); |
| av_assert0(c->dstH >= dstY); |
| |
| /* replace on the same data */ |
| rgb48Toxyz12(c, dst16, dst16, dstStride2[0]/2, ret); |
| } |
| |
| av_free(rgb0_tmp); |
| return ret; |
| } |
