mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2025-02-12 23:58:56 +00:00
swscale: error dithering for 16/9/10-bit to 8-bit.
Based on a somewhat similar idea in FFmpeg's swscale copy.
This commit is contained in:
parent
7d7bacf0f1
commit
4e3e333a79
@ -182,6 +182,18 @@ DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
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{ 77, 23, 60, 15, 72, 21, 56, 14, },
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};
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#endif
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DECLARE_ALIGNED(8, const uint8_t, dither_8x8_128)[8][8] = {
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{ 36, 68, 60, 92, 34, 66, 58, 90,},
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{ 100, 4,124, 28, 98, 2,122, 26,},
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{ 52, 84, 44, 76, 50, 82, 42, 74,},
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{ 116, 20,108, 12,114, 18,106, 10,},
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{ 32, 64, 56, 88, 38, 70, 62, 94,},
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{ 96, 0,120, 24,102, 6,126, 30,},
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{ 48, 80, 40, 72, 54, 86, 46, 78,},
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{ 112, 16,104, 8,118, 22,110, 14,},
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};
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DECLARE_ALIGNED(8, const uint8_t, ff_sws_pb_64)[8] =
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{ 64, 64, 64, 64, 64, 64, 64, 64 };
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static av_always_inline void
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yuv2yuvX16_c_template(const int16_t *lumFilter, const int32_t **lumSrc,
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@ -285,10 +297,11 @@ static void yuv2yuvX_c(SwsContext *c, const int16_t *lumFilter,
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uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
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*aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
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int i;
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const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
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//FIXME Optimize (just quickly written not optimized..)
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for (i=0; i<dstW; i++) {
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int val=1<<18;
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int val = lumDither[i & 7] << 12;
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int j;
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for (j=0; j<lumFilterSize; j++)
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val += lumSrc[j][i] * lumFilter[j];
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@ -298,8 +311,8 @@ static void yuv2yuvX_c(SwsContext *c, const int16_t *lumFilter,
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if (uDest)
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for (i=0; i<chrDstW; i++) {
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int u=1<<18;
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int v=1<<18;
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int u = chrDither[i & 7] << 12;
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int v = chrDither[(i + 3) & 7] << 12;
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int j;
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for (j=0; j<chrFilterSize; j++) {
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u += chrUSrc[j][i] * chrFilter[j];
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@ -312,7 +325,7 @@ static void yuv2yuvX_c(SwsContext *c, const int16_t *lumFilter,
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if (CONFIG_SWSCALE_ALPHA && aDest)
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for (i=0; i<dstW; i++) {
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int val=1<<18;
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int val = lumDither[i & 7] << 12;
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int j;
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for (j=0; j<lumFilterSize; j++)
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val += alpSrc[j][i] * lumFilter[j];
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@ -329,23 +342,24 @@ static void yuv2yuv1_c(SwsContext *c, const int16_t *lumSrc,
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uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
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*aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
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int i;
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const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
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for (i=0; i<dstW; i++) {
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int val= (lumSrc[i]+64)>>7;
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int val = (lumSrc[i]+ lumDither[i & 7]) >> 7;
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yDest[i]= av_clip_uint8(val);
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}
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if (uDest)
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for (i=0; i<chrDstW; i++) {
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int u=(chrUSrc[i]+64)>>7;
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int v=(chrVSrc[i]+64)>>7;
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int u = (chrUSrc[i] + chrDither[i & 7]) >> 7;
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int v = (chrVSrc[i] + chrDither[(i + 3) & 7]) >> 7;
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uDest[i]= av_clip_uint8(u);
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vDest[i]= av_clip_uint8(v);
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}
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if (CONFIG_SWSCALE_ALPHA && aDest)
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for (i=0; i<dstW; i++) {
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int val= (alpSrc[i]+64)>>7;
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int val = (alpSrc[i] + lumDither[i & 7]) >> 7;
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aDest[i]= av_clip_uint8(val);
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}
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}
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@ -359,11 +373,12 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
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{
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uint8_t *yDest = dest[0], *uDest = dest[1];
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enum PixelFormat dstFormat = c->dstFormat;
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const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
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//FIXME Optimize (just quickly written not optimized..)
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int i;
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for (i=0; i<dstW; i++) {
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int val=1<<18;
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int val = lumDither[i & 7] << 12;
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int j;
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for (j=0; j<lumFilterSize; j++)
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val += lumSrc[j][i] * lumFilter[j];
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@ -376,8 +391,8 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
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if (dstFormat == PIX_FMT_NV12)
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for (i=0; i<chrDstW; i++) {
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int u=1<<18;
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int v=1<<18;
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int u = chrDither[i & 7] << 12;
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int v = chrDither[(i + 3) & 7] << 12;
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int j;
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for (j=0; j<chrFilterSize; j++) {
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u += chrUSrc[j][i] * chrFilter[j];
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@ -389,8 +404,8 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
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}
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else
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for (i=0; i<chrDstW; i++) {
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int u=1<<18;
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int v=1<<18;
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int u = chrDither[i & 7] << 12;
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int v = chrDither[(i + 3) & 7] << 12;
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int j;
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for (j=0; j<chrFilterSize; j++) {
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u += chrUSrc[j][i] * chrFilter[j];
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@ -2352,6 +2367,7 @@ static int swScale(SwsContext *c, const uint8_t* src[],
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yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
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yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
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yuv2packedX_fn yuv2packedX = c->yuv2packedX;
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int should_dither = is9_OR_10BPS(c->srcFormat) || is16BPS(c->srcFormat);
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/* vars which will change and which we need to store back in the context */
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int dstY= c->dstY;
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@ -2401,6 +2417,9 @@ static int swScale(SwsContext *c, const uint8_t* src[],
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lastInChrBuf= -1;
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}
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if (!should_dither) {
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c->chrDither8 = c->lumDither8 = ff_sws_pb_64;
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}
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lastDstY= dstY;
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for (;dstY < dstH; dstY++) {
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@ -2490,6 +2509,10 @@ static int swScale(SwsContext *c, const uint8_t* src[],
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#if HAVE_MMX
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updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex, lastInLumBuf, lastInChrBuf);
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#endif
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if (should_dither) {
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c->chrDither8 = dither_8x8_128[chrDstY & 7];
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c->lumDither8 = dither_8x8_128[dstY & 7];
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}
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if (dstY >= dstH-2) {
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// hmm looks like we can't use MMX here without overwriting this array's tail
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find_c_packed_planar_out_funcs(c, &yuv2yuv1, &yuv2yuvX,
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@ -321,6 +321,8 @@ typedef struct SwsContext {
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#define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
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#define UV_OFF "11*8+4*4*256*3+48"
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#define UV_OFFx2 "11*8+4*4*256*3+56"
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#define DITHER16 "11*8+4*4*256*3+64"
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#define DITHER32 "11*8+4*4*256*3+80"
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DECLARE_ALIGNED(8, uint64_t, redDither);
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DECLARE_ALIGNED(8, uint64_t, greenDither);
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@ -345,6 +347,10 @@ typedef struct SwsContext {
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int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
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DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
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DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
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uint16_t dither16[8];
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uint32_t dither32[8];
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const uint8_t *chrDither8, *lumDither8;
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#if HAVE_ALTIVEC
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vector signed short CY;
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@ -37,8 +37,8 @@
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#define YSCALEYUV2YV12X(offset, dest, end, pos) \
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__asm__ volatile(\
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"movq "VROUNDER_OFFSET"(%0), %%mm3 \n\t"\
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"movq %%mm3, %%mm4 \n\t"\
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"movq "DITHER16"+0(%0), %%mm3 \n\t"\
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"movq "DITHER16"+8(%0), %%mm4 \n\t"\
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"lea " offset "(%0), %%"REG_d" \n\t"\
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"mov (%%"REG_d"), %%"REG_S" \n\t"\
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".p2align 4 \n\t" /* FIXME Unroll? */\
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@ -60,8 +60,8 @@
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MOVNTQ(%%mm3, (%1, %3))\
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"add $8, %3 \n\t"\
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"cmp %2, %3 \n\t"\
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"movq "VROUNDER_OFFSET"(%0), %%mm3 \n\t"\
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"movq %%mm3, %%mm4 \n\t"\
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"movq "DITHER16"+0(%0), %%mm3 \n\t"\
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"movq "DITHER16"+8(%0), %%mm4 \n\t"\
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"lea " offset "(%0), %%"REG_d" \n\t"\
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"mov (%%"REG_d"), %%"REG_S" \n\t"\
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"jb 1b \n\t"\
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@ -70,6 +70,42 @@
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: "%"REG_d, "%"REG_S\
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);
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#if !COMPILE_TEMPLATE_MMX2
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static av_always_inline void
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dither_8to16(SwsContext *c, const uint8_t *srcDither, int rot)
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{
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if (rot) {
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__asm__ volatile("pxor %%mm0, %%mm0\n\t"
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"movq (%0), %%mm3\n\t"
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"movq %%mm3, %%mm4\n\t"
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"psrlq $24, %%mm3\n\t"
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"psllq $40, %%mm4\n\t"
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"por %%mm4, %%mm3\n\t"
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"movq %%mm3, %%mm4\n\t"
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"punpcklbw %%mm0, %%mm3\n\t"
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"punpckhbw %%mm0, %%mm4\n\t"
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"psraw $4, %%mm3\n\t"
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"psraw $4, %%mm4\n\t"
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"movq %%mm3, "DITHER16"+0(%1)\n\t"
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"movq %%mm4, "DITHER16"+8(%1)\n\t"
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:: "r"(srcDither), "r"(&c->redDither)
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);
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} else {
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__asm__ volatile("pxor %%mm0, %%mm0\n\t"
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"movq (%0), %%mm3\n\t"
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"movq %%mm3, %%mm4\n\t"
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"punpcklbw %%mm0, %%mm3\n\t"
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"punpckhbw %%mm0, %%mm4\n\t"
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"psraw $4, %%mm3\n\t"
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"psraw $4, %%mm4\n\t"
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"movq %%mm3, "DITHER16"+0(%1)\n\t"
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"movq %%mm4, "DITHER16"+8(%1)\n\t"
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:: "r"(srcDither), "r"(&c->redDither)
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);
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}
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}
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#endif
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static void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter,
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const int16_t **lumSrc, int lumFilterSize,
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const int16_t *chrFilter, const int16_t **chrUSrc,
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@ -79,12 +115,16 @@ static void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter,
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{
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uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
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*aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
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const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
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if (uDest) {
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x86_reg uv_off = c->uv_offx2 >> 1;
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dither_8to16(c, chrDither, 0);
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YSCALEYUV2YV12X(CHR_MMX_FILTER_OFFSET, uDest, chrDstW, 0)
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dither_8to16(c, chrDither, 1);
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YSCALEYUV2YV12X(CHR_MMX_FILTER_OFFSET, vDest - uv_off, chrDstW + uv_off, uv_off)
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}
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dither_8to16(c, lumDither, 0);
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if (CONFIG_SWSCALE_ALPHA && aDest) {
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YSCALEYUV2YV12X(ALP_MMX_FILTER_OFFSET, aDest, dstW, 0)
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}
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@ -95,10 +135,10 @@ static void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter,
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#define YSCALEYUV2YV12X_ACCURATE(offset, dest, end, pos) \
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__asm__ volatile(\
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"lea " offset "(%0), %%"REG_d" \n\t"\
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"pxor %%mm4, %%mm4 \n\t"\
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"pxor %%mm5, %%mm5 \n\t"\
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"pxor %%mm6, %%mm6 \n\t"\
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"pxor %%mm7, %%mm7 \n\t"\
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"movq "DITHER32"+0(%0), %%mm4 \n\t"\
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"movq "DITHER32"+8(%0), %%mm5 \n\t"\
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"movq "DITHER32"+16(%0), %%mm6 \n\t"\
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"movq "DITHER32"+24(%0), %%mm7 \n\t"\
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"mov (%%"REG_d"), %%"REG_S" \n\t"\
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".p2align 4 \n\t"\
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"1: \n\t"\
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@ -142,10 +182,10 @@ static void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter,
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"add $8, %3 \n\t"\
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"cmp %2, %3 \n\t"\
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"lea " offset "(%0), %%"REG_d" \n\t"\
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"pxor %%mm4, %%mm4 \n\t"\
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"pxor %%mm5, %%mm5 \n\t"\
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"pxor %%mm6, %%mm6 \n\t"\
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"pxor %%mm7, %%mm7 \n\t"\
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"movq "DITHER32"+0(%0), %%mm4 \n\t"\
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"movq "DITHER32"+8(%0), %%mm5 \n\t"\
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"movq "DITHER32"+16(%0), %%mm6 \n\t"\
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"movq "DITHER32"+24(%0), %%mm7 \n\t"\
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"mov (%%"REG_d"), %%"REG_S" \n\t"\
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"jb 1b \n\t"\
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:: "r" (&c->redDither),\
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@ -153,6 +193,62 @@ static void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter,
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: "%"REG_a, "%"REG_d, "%"REG_S\
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);
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#if !COMPILE_TEMPLATE_MMX2
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static av_always_inline void
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dither_8to32(SwsContext *c, const uint8_t *srcDither, int rot)
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{
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if (rot) {
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__asm__ volatile("pxor %%mm0, %%mm0\n\t"
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"movq (%0), %%mm4\n\t"
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"movq %%mm4, %%mm5\n\t"
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"psrlq $24, %%mm4\n\t"
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"psllq $40, %%mm5\n\t"
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"por %%mm5, %%mm4\n\t"
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"movq %%mm4, %%mm6\n\t"
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"punpcklbw %%mm0, %%mm4\n\t"
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"punpckhbw %%mm0, %%mm6\n\t"
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"movq %%mm4, %%mm5\n\t"
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"movq %%mm6, %%mm7\n\t"
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"punpcklwd %%mm0, %%mm4\n\t"
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"punpckhwd %%mm0, %%mm5\n\t"
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"punpcklwd %%mm0, %%mm6\n\t"
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"punpckhwd %%mm0, %%mm7\n\t"
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"psllw $12, %%mm4\n\t"
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"psllw $12, %%mm5\n\t"
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"psllw $12, %%mm6\n\t"
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"psllw $12, %%mm7\n\t"
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"movq %%mm3, "DITHER32"+0(%1)\n\t"
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"movq %%mm4, "DITHER32"+8(%1)\n\t"
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"movq %%mm4, "DITHER32"+16(%1)\n\t"
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"movq %%mm4, "DITHER32"+24(%1)\n\t"
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:: "r"(srcDither), "r"(&c->redDither)
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);
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} else {
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__asm__ volatile("pxor %%mm0, %%mm0\n\t"
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"movq (%0), %%mm4\n\t"
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"movq %%mm4, %%mm6\n\t"
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"punpcklbw %%mm0, %%mm4\n\t"
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"punpckhbw %%mm0, %%mm6\n\t"
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"movq %%mm4, %%mm5\n\t"
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"movq %%mm6, %%mm7\n\t"
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"punpcklwd %%mm0, %%mm4\n\t"
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"punpckhwd %%mm0, %%mm5\n\t"
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"punpcklwd %%mm0, %%mm6\n\t"
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"punpckhwd %%mm0, %%mm7\n\t"
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"psllw $12, %%mm4\n\t"
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"psllw $12, %%mm5\n\t"
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"psllw $12, %%mm6\n\t"
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"psllw $12, %%mm7\n\t"
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"movq %%mm3, "DITHER32"+0(%1)\n\t"
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"movq %%mm4, "DITHER32"+8(%1)\n\t"
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"movq %%mm4, "DITHER32"+16(%1)\n\t"
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"movq %%mm4, "DITHER32"+24(%1)\n\t"
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:: "r"(srcDither), "r"(&c->redDither)
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);
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}
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}
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#endif
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static void RENAME(yuv2yuvX_ar)(SwsContext *c, const int16_t *lumFilter,
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const int16_t **lumSrc, int lumFilterSize,
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const int16_t *chrFilter, const int16_t **chrUSrc,
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@ -162,12 +258,16 @@ static void RENAME(yuv2yuvX_ar)(SwsContext *c, const int16_t *lumFilter,
|
||||
{
|
||||
uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
|
||||
*aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
|
||||
const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
|
||||
|
||||
if (uDest) {
|
||||
x86_reg uv_off = c->uv_offx2 >> 1;
|
||||
dither_8to32(c, chrDither, 0);
|
||||
YSCALEYUV2YV12X_ACCURATE(CHR_MMX_FILTER_OFFSET, uDest, chrDstW, 0)
|
||||
dither_8to32(c, chrDither, 1);
|
||||
YSCALEYUV2YV12X_ACCURATE(CHR_MMX_FILTER_OFFSET, vDest - uv_off, chrDstW + uv_off, uv_off)
|
||||
}
|
||||
dither_8to32(c, lumDither, 0);
|
||||
if (CONFIG_SWSCALE_ALPHA && aDest) {
|
||||
YSCALEYUV2YV12X_ACCURATE(ALP_MMX_FILTER_OFFSET, aDest, dstW, 0)
|
||||
}
|
||||
@ -220,19 +320,20 @@ static void RENAME(yuv2yuv1_ar)(SwsContext *c, const int16_t *lumSrc,
|
||||
chrVSrc + chrDstW, alpSrc + dstW
|
||||
};
|
||||
x86_reg counter[4]= { dstW, chrDstW, chrDstW, dstW };
|
||||
const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
|
||||
|
||||
while (p--) {
|
||||
if (dst[p]) {
|
||||
dither_8to16(c, (p == 2 || p == 3) ? chrDither : lumDither, p == 2);
|
||||
__asm__ volatile(
|
||||
"mov %2, %%"REG_a" \n\t"
|
||||
"pcmpeqw %%mm7, %%mm7 \n\t"
|
||||
"psrlw $15, %%mm7 \n\t"
|
||||
"psllw $6, %%mm7 \n\t"
|
||||
"movq "DITHER16"+0(%3), %%mm6 \n\t"
|
||||
"movq "DITHER16"+8(%3), %%mm7 \n\t"
|
||||
".p2align 4 \n\t" /* FIXME Unroll? */
|
||||
"1: \n\t"
|
||||
"movq (%0, %%"REG_a", 2), %%mm0 \n\t"
|
||||
"movq 8(%0, %%"REG_a", 2), %%mm1 \n\t"
|
||||
"paddsw %%mm7, %%mm0 \n\t"
|
||||
"paddsw %%mm6, %%mm0 \n\t"
|
||||
"paddsw %%mm7, %%mm1 \n\t"
|
||||
"psraw $7, %%mm0 \n\t"
|
||||
"psraw $7, %%mm1 \n\t"
|
||||
@ -241,7 +342,7 @@ static void RENAME(yuv2yuv1_ar)(SwsContext *c, const int16_t *lumSrc,
|
||||
"add $8, %%"REG_a" \n\t"
|
||||
"jnc 1b \n\t"
|
||||
:: "r" (src[p]), "r" (dst[p] + counter[p]),
|
||||
"g" (-counter[p])
|
||||
"g" (-counter[p]), "r"(&c->redDither)
|
||||
: "%"REG_a
|
||||
);
|
||||
}
|
||||
|
Loading…
x
Reference in New Issue
Block a user