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-rw-r--r--libswscale/swscale.c376
1 files changed, 290 insertions, 86 deletions
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 4c74e18de3..7c4324417d 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -1,20 +1,20 @@
/*
- * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -24,6 +24,7 @@
#include <stdio.h>
#include <string.h>
+#include "libavutil/avassert.h"
#include "libavutil/avutil.h"
#include "libavutil/bswap.h"
#include "libavutil/cpu.h"
@@ -71,6 +72,9 @@ static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW,
int bits = av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1;
int sh = bits - 4;
+ if((isAnyRGB(c->srcFormat) || c->srcFormat==AV_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];
@@ -92,6 +96,9 @@ static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
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==AV_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];
@@ -208,7 +215,7 @@ 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 + (33561947 << 4)) >> 14;
+ dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
}
static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
@@ -222,6 +229,8 @@ static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
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
@@ -234,13 +243,13 @@ static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
uint8_t *formatConvBuffer,
uint32_t *pal, int isAlpha)
{
- void (*toYV12)(uint8_t *, const uint8_t *, int, uint32_t *) =
+ 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, srcW, pal);
+ toYV12(formatConvBuffer, src, src_in[1], src_in[2], srcW, pal);
src = formatConvBuffer;
} else if (c->readLumPlanar && !isAlpha) {
c->readLumPlanar(formatConvBuffer, src_in, srcW);
@@ -271,6 +280,10 @@ static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
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,
@@ -285,13 +298,13 @@ static av_always_inline void hcscale(SwsContext *c, int16_t *dst1,
const uint8_t *src1 = src_in[1], *src2 = src_in[2];
if (c->chrToYV12) {
uint8_t *buf2 = formatConvBuffer +
- FFALIGN(srcW * FFALIGN(c->srcBpc, 8) >> 3, 16);
- c->chrToYV12(formatConvBuffer, buf2, src1, src2, srcW, pal);
- src1 = formatConvBuffer;
- src2 = buf2;
+ 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 * FFALIGN(c->srcBpc, 8) >> 3, 16);
+ FFALIGN(srcW*2+78, 16);
c->readChrPlanar(formatConvBuffer, buf2, src_in, srcW);
src1 = formatConvBuffer;
src2 = buf2;
@@ -332,8 +345,6 @@ static int swScale(SwsContext *c, const uint8_t *src[],
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;
@@ -392,8 +403,8 @@ static int swScale(SwsContext *c, const uint8_t *src[],
DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n",
vLumFilterSize, vLumBufSize, vChrFilterSize, vChrBufSize);
- if (dstStride[0] % 8 != 0 || dstStride[1] % 8 != 0 ||
- dstStride[2] % 8 != 0 || dstStride[3] % 8 != 0) {
+ 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,
@@ -403,6 +414,18 @@ static int swScale(SwsContext *c, const uint8_t *src[],
}
}
+ 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_MMXEXT && (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. */
@@ -427,6 +450,7 @@ static int swScale(SwsContext *c, const uint8_t *src[],
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]);
@@ -445,8 +469,8 @@ static int swScale(SwsContext *c, const uint8_t *src[],
lastInLumBuf = firstLumSrcY - 1;
if (firstChrSrcY > lastInChrBuf)
lastInChrBuf = firstChrSrcY - 1;
- assert(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
- assert(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);
+ av_assert0(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
+ av_assert0(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);
DEBUG_BUFFERS("dstY: %d\n", dstY);
DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
@@ -474,9 +498,9 @@ static int swScale(SwsContext *c, const uint8_t *src[],
src[3] + (lastInLumBuf + 1 - srcSliceY) * srcStride[3],
};
lumBufIndex++;
- assert(lumBufIndex < 2 * vLumBufSize);
- assert(lastInLumBuf + 1 - srcSliceY < srcSliceH);
- assert(lastInLumBuf + 1 - srcSliceY >= 0);
+ av_assert0(lumBufIndex < 2 * vLumBufSize);
+ av_assert0(lastInLumBuf + 1 - srcSliceY < srcSliceH);
+ av_assert0(lastInLumBuf + 1 - srcSliceY >= 0);
hyscale(c, lumPixBuf[lumBufIndex], dstW, src1, srcW, lumXInc,
hLumFilter, hLumFilterPos, hLumFilterSize,
formatConvBuffer, pal, 0);
@@ -496,9 +520,9 @@ static int swScale(SwsContext *c, const uint8_t *src[],
src[3] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[3],
};
chrBufIndex++;
- assert(chrBufIndex < 2 * vChrBufSize);
- assert(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
- assert(lastInChrBuf + 1 - chrSrcSliceY >= 0);
+ av_assert0(chrBufIndex < 2 * vChrBufSize);
+ av_assert0(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
+ av_assert0(lastInChrBuf + 1 - chrSrcSliceY >= 0);
// FIXME replace parameters through context struct (some at least)
if (c->needs_hcscale)
@@ -531,103 +555,81 @@ static int swScale(SwsContext *c, const uint8_t *src[],
* 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 **)lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
- const int16_t **chrUSrcPtr = (const int16_t **)chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
- const int16_t **chrVSrcPtr = (const int16_t **)chrVPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
+ 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 **)alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
-
- if (firstLumSrcY < 0 || firstLumSrcY + vLumFilterSize > c->srcH) {
- const int16_t **tmpY = (const int16_t **)lumPixBuf +
- 2 * vLumBufSize;
- int neg = -firstLumSrcY, i;
- int end = FFMIN(c->srcH - firstLumSrcY, vLumFilterSize);
- for (i = 0; i < neg; i++)
- tmpY[i] = lumSrcPtr[neg];
- for (; i < end; i++)
- tmpY[i] = lumSrcPtr[i];
- for (; i < vLumFilterSize; i++)
- tmpY[i] = tmpY[i - 1];
- lumSrcPtr = tmpY;
-
- if (alpSrcPtr) {
- const int16_t **tmpA = (const int16_t **)alpPixBuf +
- 2 * vLumBufSize;
- for (i = 0; i < neg; i++)
- tmpA[i] = alpSrcPtr[neg];
- for (; i < end; i++)
- tmpA[i] = alpSrcPtr[i];
- for (; i < vLumFilterSize; i++)
- tmpA[i] = tmpA[i - 1];
- alpSrcPtr = tmpA;
- }
- }
- if (firstChrSrcY < 0 ||
- firstChrSrcY + vChrFilterSize > c->chrSrcH) {
- const int16_t **tmpU = (const int16_t **)chrUPixBuf + 2 * vChrBufSize,
- **tmpV = (const int16_t **)chrVPixBuf + 2 * vChrBufSize;
- int neg = -firstChrSrcY, i;
- int end = FFMIN(c->chrSrcH - firstChrSrcY, vChrFilterSize);
- for (i = 0; i < neg; i++) {
- tmpU[i] = chrUSrcPtr[neg];
- tmpV[i] = chrVSrcPtr[neg];
- }
- for (; i < end; i++) {
- tmpU[i] = chrUSrcPtr[i];
- tmpV[i] = chrVSrcPtr[i];
- }
- for (; i < vChrFilterSize; i++) {
- tmpU[i] = tmpU[i - 1];
- tmpV[i] = tmpV[i - 1];
- }
- chrUSrcPtr = tmpU;
- chrVSrcPtr = tmpV;
- }
+ (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 + dstY * vLumFilterSize,
- vLumFilterSize, lumSrcPtr, dest[0],
+ yuv2planeX(vLumFilter, vLumFilterSize,
+ lumSrcPtr, dest[0],
dstW, c->lumDither8, 0);
}
if (!((dstY & chrSkipMask) || isGray(dstFormat))) {
if (yuv2nv12cX) {
- yuv2nv12cX(c, vChrFilter + chrDstY * vChrFilterSize,
+ 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 + chrDstY * vChrFilterSize,
+ yuv2planeX(vChrFilter,
vChrFilterSize, chrUSrcPtr, dest[1],
chrDstW, c->chrDither8, 0);
- yuv2planeX(vChrFilter + chrDstY * vChrFilterSize,
+ yuv2planeX(vChrFilter,
vChrFilterSize, chrVSrcPtr, dest[2],
- chrDstW, c->chrDither8, 3);
+ 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 + dstY * vLumFilterSize,
+ yuv2planeX(vLumFilter,
vLumFilterSize, alpSrcPtr, dest[3],
dstW, c->lumDither8, 0);
}
}
} else {
+ av_assert1(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize * 2);
+ av_assert1(chrUSrcPtr + vChrFilterSize - 1 < chrUPixBuf + vChrBufSize * 2);
if (c->yuv2packed1 && vLumFilterSize == 1 &&
vChrFilterSize <= 2) { // unscaled RGB
int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1];
@@ -685,8 +687,9 @@ static av_cold void sws_init_swScale_c(SwsContext *c)
ff_sws_init_input_funcs(c);
+
if (c->srcBpc == 8) {
- if (c->dstBpc <= 10) {
+ if (c->dstBpc <= 14) {
c->hyScale = c->hcScale = hScale8To15_c;
if (c->flags & SWS_FAST_BILINEAR) {
c->hyscale_fast = hyscale_fast_c;
@@ -696,12 +699,12 @@ static av_cold void sws_init_swScale_c(SwsContext *c)
c->hyScale = c->hcScale = hScale8To19_c;
}
} else {
- c->hyScale = c->hcScale = c->dstBpc > 10 ? hScale16To19_c
+ c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c
: hScale16To15_c;
}
if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
- if (c->dstBpc <= 10) {
+ if (c->dstBpc <= 14) {
if (c->srcRange) {
c->lumConvertRange = lumRangeFromJpeg_c;
c->chrConvertRange = chrRangeFromJpeg_c;
@@ -736,3 +739,204 @@ SwsFunc ff_getSwsFunc(SwsContext *c)
return swScale;
}
+
+static void reset_ptr(const uint8_t *src[], int 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_descriptors[pix_fmt];
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ int plane = desc->comp[i].plane;
+ if (!data[plane] || !linesizes[plane])
+ return 0;
+ }
+
+ return 1;
+}
+
+/**
+ * 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] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
+ uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
+ uint8_t *rgb0_tmp = NULL;
+
+ // 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 p, r, g, b, y, u, v, a = 0xff;
+ if (c->srcFormat == AV_PIX_FMT_PAL8) {
+ 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) + (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) + (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) + (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) + (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) + (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);
+ 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;
+ }
+
+ // copy strides, so they can safely be modified
+ if (c->sliceDir == 1) {
+ // slices go from top to bottom
+ int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
+ srcStride[3] };
+ int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
+ dstStride[3] };
+
+ reset_ptr(src2, c->srcFormat);
+ reset_ptr((void*)dst2, c->dstFormat);
+
+ /* reset slice direction at end of frame */
+ if (srcSliceY + srcSliceH == c->srcH)
+ c->sliceDir = 0;
+
+ ret = c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
+ dstStride2);
+ } else {
+ // slices go from bottom to top => we flip the image internally
+ int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
+ -srcStride[3] };
+ int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
+ -dstStride[3] };
+
+ 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];
+
+ reset_ptr(src2, c->srcFormat);
+ reset_ptr((void*)dst2, c->dstFormat);
+
+ /* reset slice direction at end of frame */
+ if (!srcSliceY)
+ c->sliceDir = 0;
+
+ ret = c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
+ srcSliceH, dst2, dstStride2);
+ }
+
+ av_free(rgb0_tmp);
+ return ret;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 03:59:27 +0000