23 #define _SVID_SOURCE // needed for MAP_ANONYMOUS
24 #define _DARWIN_C_SOURCE // needed for MAP_ANON
31 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
32 #define MAP_ANONYMOUS MAP_ANON
36 #define WIN32_LEAN_AND_MEAN
72 #define LICENSE_PREFIX "libswscale license: "
248 return ((d * dist + c) * dist + b) * dist +
a;
251 b + 2.0 * c + 3.0 * d,
253 -b - 3.0 * c - 6.0 * d,
259 if (pos == -1 || pos <= -513) {
260 pos = (128 << chr_subsample) - 128;
263 return pos >> chr_subsample;
280 {
SWS_POINT,
"nearest neighbor / point", -1 },
283 {
SWS_X,
"experimental", 8 },
287 int *outFilterSize,
int xInc,
int srcW,
288 int dstW,
int filterAlign,
int one,
289 int flags,
int cpu_flags,
291 double param[2],
int srcPos,
int dstPos)
298 int64_t *filter2 =
NULL;
299 const int64_t fone = 1LL << (54 -
FFMIN(
av_log2(srcW/dstW), 8));
307 if (
FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) {
311 dstW,
sizeof(*filter) * filterSize, fail);
313 for (i = 0; i < dstW; i++) {
314 filter[i * filterSize] = fone;
322 dstW,
sizeof(*filter) * filterSize, fail);
324 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
325 for (i = 0; i < dstW; i++) {
326 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
328 (*filterPos)[i] = xx;
332 }
else if ((xInc <= (1 << 16) && (flags &
SWS_AREA)) ||
338 dstW,
sizeof(*filter) * filterSize, fail);
340 xDstInSrc = ((dstPos*(int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
341 for (i = 0; i < dstW; i++) {
342 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
345 (*filterPos)[i] = xx;
347 for (j = 0; j < filterSize; j++) {
348 int64_t
coeff= fone -
FFABS(((int64_t)xx<<16) - xDstInSrc)*(fone>>16);
351 filter[i * filterSize + j] =
coeff;
361 if (flags & scale_algorithms[i].flag && scale_algorithms[i].size_factor > 0) {
371 filterSize = 1 + sizeFactor;
373 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
375 filterSize =
FFMIN(filterSize, srcW - 2);
376 filterSize =
FFMAX(filterSize, 1);
379 dstW,
sizeof(*filter) * filterSize, fail);
381 xDstInSrc = ((dstPos*(int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
382 for (i = 0; i < dstW; i++) {
383 int xx = (xDstInSrc - ((int64_t)(filterSize - 2) << 16)) / (1 << 17);
385 (*filterPos)[i] = xx;
386 for (j = 0; j < filterSize; j++) {
387 int64_t d = (
FFABS(((int64_t)xx << 17) - xDstInSrc)) << 13;
393 floatd = d * (1.0 / (1 << 30));
399 if (d >= 1LL << 31) {
402 int64_t dd = (d * d) >> 30;
403 int64_t ddd = (dd * d) >> 30;
406 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
407 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
408 (6 * (1 << 24) - 2 * B) * (1 << 30);
410 coeff = (-B - 6 *
C) * ddd +
411 (6 * B + 30 * C) * dd +
412 (-12 * B - 48 *
C) * d +
413 (8 * B + 24 * C) * (1 << 30);
415 coeff /= (1LL<<54)/fone;
418 else if (flags &
SWS_X) {
419 double p = param ? param * 0.01 : 0.3;
420 coeff = d ? sin(d *
M_PI) / (d *
M_PI) : 1.0;
421 coeff *= pow(2.0, -p * d * d);
424 else if (flags & SWS_X) {
429 c = cos(floatd *
M_PI);
436 coeff = (c * 0.5 + 0.5) * fone;
438 int64_t d2 = d - (1 << 29);
439 if (d2 * xInc < -(1LL << (29 + 16)))
440 coeff = 1.0 * (1LL << (30 + 16));
441 else if (d2 * xInc < (1LL << (29 + 16)))
442 coeff = -d2 * xInc + (1LL << (29 + 16));
445 coeff *= fone >> (30 + 16);
448 coeff = (pow(2.0, -p * floatd * floatd)) * fone;
450 coeff = (d ? sin(floatd *
M_PI) / (floatd *
M_PI) : 1.0) * fone;
451 }
else if (flags & SWS_LANCZOS) {
453 coeff = (d ? sin(floatd *
M_PI) * sin(floatd * M_PI / p) /
454 (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone;
458 coeff = (1 << 30) - d;
463 double p = -2.196152422706632;
469 filter[i * filterSize + j] =
coeff;
472 xDstInSrc += 2 * xInc;
480 filter2Size = filterSize;
482 filter2Size += srcFilter->
length - 1;
484 filter2Size += dstFilter->
length - 1;
488 for (i = 0; i < dstW; i++) {
492 for (k = 0; k < srcFilter->
length; k++) {
493 for (j = 0; j < filterSize; j++)
494 filter2[i * filter2Size + k + j] +=
495 srcFilter->
coeff[k] * filter[i * filterSize + j];
498 for (j = 0; j < filterSize; j++)
499 filter2[i * filter2Size + j] = filter[i * filterSize + j];
503 (*filterPos)[i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
510 for (i = dstW - 1; i >= 0; i--) {
511 int min = filter2Size;
513 int64_t cutOff = 0.0;
516 for (j = 0; j < filter2Size; j++) {
518 cutOff +=
FFABS(filter2[i * filter2Size]);
525 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
529 for (k = 1; k < filter2Size; k++)
530 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
531 filter2[i * filter2Size + k - 1] = 0;
537 for (j = filter2Size - 1; j > 0; j--) {
538 cutOff +=
FFABS(filter2[i * filter2Size + j]);
545 if (min > minFilterSize)
551 if (minFilterSize < 5)
557 if (minFilterSize < 3)
563 if (minFilterSize == 1 && filterAlign == 2)
568 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
578 *outFilterSize = filterSize;
582 "SwScaler: reducing / aligning filtersize %d -> %d\n",
583 filter2Size, filterSize);
585 for (i = 0; i < dstW; i++) {
588 for (j = 0; j < filterSize; j++) {
589 if (j >= filter2Size)
590 filter[i * filterSize + j] = 0;
592 filter[i * filterSize + j] = filter2[i * filter2Size + j];
594 filter[i * filterSize + j] = 0;
601 for (i = 0; i < dstW; i++) {
603 if ((*filterPos)[i] < 0) {
605 for (j = 1; j < filterSize; j++) {
606 int left =
FFMAX(j + (*filterPos)[i], 0);
607 filter[i * filterSize + left] += filter[i * filterSize + j];
608 filter[i * filterSize + j] = 0;
613 if ((*filterPos)[i] + filterSize > srcW) {
614 int shift = (*filterPos)[i] +
FFMIN(filterSize - srcW, 0);
617 for (j = filterSize - 1; j >= 0; j--) {
618 if ((*filterPos)[i] + j >= srcW) {
619 acc += filter[i * filterSize + j];
620 filter[i * filterSize + j] = 0;
623 for (j = filterSize - 1; j >= 0; j--) {
625 filter[i * filterSize + j] = 0;
627 filter[i * filterSize + j] = filter[i * filterSize + j -
shift];
631 (*filterPos)[i]-=
shift;
632 filter[i * filterSize + srcW - 1 - (*filterPos)[i]] +=
acc;
636 if ((*filterPos)[i] + filterSize > srcW) {
637 for (j = 0; j < filterSize; j++) {
638 av_assert0((*filterPos)[i] + j < srcW || !filter[i * filterSize + j]);
646 (dstW + 3), *outFilterSize *
sizeof(int16_t), fail);
649 for (i = 0; i < dstW; i++) {
654 for (j = 0; j < filterSize; j++) {
655 sum += filter[i * filterSize + j];
657 sum = (sum + one / 2) / one;
662 for (j = 0; j < *outFilterSize; j++) {
663 int64_t
v = filter[i * filterSize + j] + error;
665 (*outFilter)[i * (*outFilterSize) + j] = intV;
666 error = v - intV * sum;
670 (*filterPos)[dstW + 0] =
671 (*filterPos)[dstW + 1] =
672 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1];
674 for (i = 0; i < *outFilterSize; i++) {
675 int k = (dstW - 1) * (*outFilterSize) + i;
676 (*outFilter)[k + 1 * (*outFilterSize)] =
677 (*outFilter)[k + 2 * (*outFilterSize)] =
678 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
693 int64_t
W,
V, Z, Cy, Cu, Cv;
694 int64_t vr = table[0];
695 int64_t ub = table[1];
696 int64_t ug = -table[2];
697 int64_t vg = -table[3];
702 static const int8_t map[] = {
727 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
728 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
729 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
730 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
731 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
732 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
733 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
734 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
782 AV_WL16(p + 16*4 + 2*i, map[i] >= 0 ?
c->input_rgb2yuv_table[map[i]] : 0);
792 static const int16_t xyz2rgb_matrix[3][4] = {
793 {13270, -6295, -2041},
795 { 228, -835, 4329} };
796 static const int16_t rgb2xyz_matrix[3][4] = {
800 static int16_t xyzgamma_tab[4096], rgbgamma_tab[4096], xyzgammainv_tab[4096], rgbgammainv_tab[4096];
809 if (rgbgamma_tab[4095])
813 for (i = 0; i < 4096; i++) {
814 xyzgamma_tab[i] =
lrint(pow(i / 4095.0, xyzgamma) * 4095.0);
815 rgbgamma_tab[i] =
lrint(pow(i / 4095.0, rgbgamma) * 4095.0);
816 xyzgammainv_tab[i] =
lrint(pow(i / 4095.0, xyzgammainv) * 4095.0);
817 rgbgammainv_tab[i] =
lrint(pow(i / 4095.0, rgbgammainv) * 4095.0);
822 int srcRange,
const int table[4],
int dstRange,
823 int brightness,
int contrast,
int saturation)
861 contrast, saturation);
866 contrast, saturation);
875 int *srcRange,
int **
table,
int *dstRange,
876 int *brightness,
int *contrast,
int *saturation)
967 int usesVFilter, usesHFilter;
974 int dst_stride =
FFALIGN(dstW *
sizeof(int16_t) + 66, 16);
975 int flags, cpu_flags;
988 unscaled = (srcW == dstW && srcH == dstH);
994 av_log(c,
AV_LOG_WARNING,
"deprecated pixel format used, make sure you did set range correctly\n");
1035 if (dstW < srcW && dstH < srcH)
1037 else if (dstW > srcW && dstH > srcH)
1042 }
else if (i & (i - 1)) {
1044 "Exactly one scaler algorithm must be chosen, got %X\n", i);
1048 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1052 srcW, srcH, dstW, dstH);
1057 dstFilter = &dummyFilter;
1059 srcFilter = &dummyFilter;
1061 c->
lumXInc = (((int64_t)srcW << 16) + (dstW >> 1)) / dstW;
1062 c->
lumYInc = (((int64_t)srcH << 16) + (dstH >> 1)) / dstH;
1065 c->
vRounder = 4 * 0x0001000100010001ULL;
1067 usesVFilter = (srcFilter->
lumV && srcFilter->
lumV->
length > 1) ||
1071 usesHFilter = (srcFilter->
lumH && srcFilter->
lumH->
length > 1) ||
1091 av_log(c,
AV_LOG_DEBUG,
"Forcing full internal H chroma due to input having non subsampled chroma\n");
1108 if (!(flags & SWS_FULL_CHR_H_INT)) {
1111 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1117 if (flags & SWS_FULL_CHR_H_INT) {
1120 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1127 if (!(flags & SWS_FULL_CHR_H_INT)) {
1129 "%s output is not supported with half chroma resolution, switching to full\n",
1138 if (flags & SWS_FULL_CHR_H_INT &&
1153 "full chroma interpolation for destination format '%s' not yet implemented\n",
1155 flags &= ~SWS_FULL_CHR_H_INT;
1158 if (
isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1209 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1226 if (flags & SWS_FAST_BILINEAR) {
1233 c->
lumXInc = ((int64_t)(srcW - 2) << 16) / (dstW - 2) - 20;
1244 srcW, srcH, tmpFormat, 64);
1249 srcW, srcH, tmpFormat,
1255 dstW, dstH, dstFormat,
1263 #define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
1267 #if HAVE_MMXEXT_INLINE
1277 PROT_READ | PROT_WRITE,
1278 MAP_PRIVATE | MAP_ANONYMOUS,
1281 PROT_READ | PROT_WRITE,
1282 MAP_PRIVATE | MAP_ANONYMOUS,
1284 #elif HAVE_VIRTUALALLOC
1288 PAGE_EXECUTE_READWRITE);
1292 PAGE_EXECUTE_READWRITE);
1298 #ifdef MAP_ANONYMOUS
1328 const int filterAlign =
X86_MMX(cpu_flags) ? 4 :
1333 srcW, dstW, filterAlign, 1 << 14,
1335 cpu_flags, srcFilter->
lumH, dstFilter->
lumH,
1343 (flags & SWS_BICUBLIN) ? (flags |
SWS_BILINEAR) : flags,
1344 cpu_flags, srcFilter->
chrH, dstFilter->
chrH,
1354 const int filterAlign =
X86_MMX(cpu_flags) ? 2 :
1358 c->
lumYInc, srcH, dstH, filterAlign, (1 << 12),
1360 cpu_flags, srcFilter->
lumV, dstFilter->
lumV,
1367 filterAlign, (1 << 12),
1368 (flags & SWS_BICUBLIN) ? (flags |
SWS_BILINEAR) : flags,
1369 cpu_flags, srcFilter->
chrV, dstFilter->
chrV,
1382 short *p = (
short *)&c->vYCoeffsBank[i];
1383 for (j = 0; j < 8; j++)
1389 short *p = (
short *)&c->vCCoeffsBank[i];
1390 for (j = 0; j < 8; j++)
1399 for (i = 0; i < dstH; i++) {
1400 int chrI = (int64_t)i * c->
chrDstH / dstH;
1415 for (i = 0; i < 4; i++)
1430 dst_stride + 16, fail);
1438 dst_stride * 2 + 32, fail);
1446 dst_stride + 16, fail);
1454 for(j=0; j<dst_stride/2+1; j++)
1457 for(j=0; j<dst_stride+1; j++)
1463 const char *scaler =
NULL, *cpucaps;
1466 if (flags & scale_algorithms[i].flag) {
1472 scaler =
"ehh flags invalid?!";
1493 cpucaps =
"AltiVec";
1501 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1504 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1510 if (unscaled && !usesHFilter && !usesVFilter &&
1515 if (flags & SWS_PRINT_INFO)
1517 "using unscaled %s -> %s special converter\n",
1527 int tmpW = sqrt(srcW * (int64_t)dstW);
1528 int tmpH = sqrt(srcH * (int64_t)dstH);
1531 if (srcW*(int64_t)srcH <= 4LL*dstW*dstH)
1535 tmpW, tmpH, tmpFormat, 64);
1540 tmpW, tmpH, tmpFormat,
1546 dstW, dstH, dstFormat,
1558 SwsFilter *dstFilter,
const double *param)
1574 c->
param[0] = param[0];
1575 c->
param[1] = param[1];
1587 float lumaSharpen,
float chromaSharpen,
1588 float chromaHShift,
float chromaVShift,
1595 if (lumaGBlur != 0.0) {
1603 if (chromaGBlur != 0.0) {
1620 if (chromaSharpen != 0.0) {
1629 if (lumaSharpen != 0.0) {
1638 if (chromaHShift != 0.0)
1641 if (chromaVShift != 0.0)
1676 const int length = (int)(variance * quality + 0.5) | 1;
1678 double middle = (length - 1) * 0.5;
1681 if(variance < 0 || quality < 0)
1689 for (i = 0; i <
length; i++) {
1690 double dist = i - middle;
1691 vec->
coeff[i] = exp(-dist * dist / (2 * variance * variance)) /
1692 sqrt(2 * variance *
M_PI);
1708 for (i = 0; i <
length; i++)
1724 for (i = 0; i < a->
length; i++)
1734 for (i = 0; i < a->
length; i++)
1735 a->
coeff[i] *= scalar;
1752 for (i = 0; i < a->
length; i++) {
1753 for (j = 0; j < b->
length; j++) {
1770 for (i = 0; i < a->
length; i++)
1787 for (i = 0; i < a->
length; i++)
1805 for (i = 0; i < a->
length; i++) {
1806 vec->
coeff[i + (length - 1) / 2 -
1868 for (i = 0; i < a->
length; i++)
1869 if (a->
coeff[i] > max)
1872 for (i = 0; i < a->
length; i++)
1873 if (a->
coeff[i] < min)
1878 for (i = 0; i < a->
length; i++) {
1879 int x = (int)((a->
coeff[i] - min) * 60.0 / range + 0.5);
1880 av_log(log_ctx, log_level,
"%1.3f ", a->
coeff[i]);
1882 av_log(log_ctx, log_level,
" ");
1883 av_log(log_ctx, log_level,
"|\n");
1933 for (i = 0; i < 4; i++)
1956 #elif HAVE_VIRTUALALLOC
1986 const double *
param)
1994 param = default_param;
1997 (context->
srcW != srcW ||
1998 context->
srcH != srcH ||
2000 context->
dstW != dstW ||
2001 context->
dstH != dstH ||
2003 context->
flags != flags ||
2004 context->
param[0] != param[0] ||
2005 context->
param[1] != param[1])) {
2025 context->
param[0] = param[0];
2026 context->
param[1] = param[1];
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
int16_t ** alpPixBuf
Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported output format, 0 otherwise.
static const FormatEntry format_entries[AV_PIX_FMT_NB]
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
static enum AVPixelFormat pix_fmt
static SwsVector * sws_sumVec(SwsVector *a, SwsVector *b)
av_cold void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
static int shift(int a, int b)
static int handle_0alpha(enum AVPixelFormat *format)
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
#define SWS_SRC_V_CHR_DROP_MASK
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
int chrSrcH
Height of source chroma planes.
#define FF_ALLOCZ_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)
static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
#define LIBSWSCALE_VERSION_MICRO
uint8_t * chrMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
static void fill_rgb2yuv_table(SwsContext *c, const int table[4], int dstRange)
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
static int conv(int samples, float **pcm, char *buf, int channels)
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
uint8_t * lumMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
#define AV_LOG_WARNING
Something somehow does not look correct.
packed RGB 8:8:8, 24bpp, RGBRGB...
packed RGB 1:2:1 bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in ...
static av_cold int get_local_pos(SwsContext *s, int chr_subsample, int pos, int dir)
int sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)
int av_image_alloc(uint8_t *pointers[4], int linesizes[4], int w, int h, enum AVPixelFormat pix_fmt, int align)
Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordi...
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
SwsVector * sws_getGaussianVec(double variance, double quality)
Return a normalized Gaussian curve used to filter stuff quality = 3 is high quality, lower is lower quality.
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
bayer, GBGB..(odd line), RGRG..(even line), 8-bit samples */
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
int vChrDrop
Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user...
bayer, GRGR..(odd line), BGBG..(even line), 8-bit samples */
int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined ...
static double getSplineCoeff(double a, double b, double c, double d, double dist)
bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, little-endian */
int dstFormatBpp
Number of bits per pixel of the destination pixel format.
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
static int handle_jpeg(enum AVPixelFormat *format)
int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian
#define SWS_SRC_V_CHR_DROP_SHIFT
const char * swscale_configuration(void)
Return the libswscale build-time configuration.
planar GBR 4:4:4 36bpp, little-endian
The following 12 formats have the disadvantage of needing 1 format for each bit depth.
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), big-endian, X=unused/undefined
void sws_subVec(SwsVector *a, SwsVector *b)
#define FF_ARRAY_ELEMS(a)
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
bayer, BGBG..(odd line), GRGR..(even line), 8-bit samples */
planar GBR 4:4:4 36bpp, big-endian
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
packed RGB 1:2:1 bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in ...
struct SwsContext * cascaded_context[2]
Macro definitions for various function/variable attributes.
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
int srcH
Height of source luma/alpha planes.
packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
planar GBRA 4:4:4:4 64bpp, big-endian
#define av_assert0(cond)
assert() equivalent, that is always enabled.
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
const int32_t ff_yuv2rgb_coeffs[8][4]
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
int chrDstVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination i...
ptrdiff_t uv_off
offset (in pixels) between u and v planes
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
int length
number of coefficients in the vector
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
8 bit with PIX_FMT_RGB32 palette
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as lit...
int vChrFilterSize
Vertical filter size for chroma pixels.
bayer, GBGB..(odd line), RGRG..(even line), 16-bit samples, little-endian */
bayer, GBGB..(odd line), RGRG..(even line), 16-bit samples, big-endian */
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
int16_t ** lumPixBuf
Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), little-endian, X=unused/undefined ...
void sws_addVec(SwsVector *a, SwsVector *b)
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
#define SWS_FULL_CHR_H_INT
int cascaded_tmpStride[4]
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
#define SWS_FAST_BILINEAR
planar GBR 4:4:4 48bpp, big-endian
FF_ENABLE_DEPRECATION_WARNINGS enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt)
Utility function to swap the endianness of a pixel format.
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of PIX_FMT_YUV440P and setting color_range ...
SwsContext * sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Allocate and return an SwsContext.
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV422P and setting color_...
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
Initialize the swscaler context sws_context.
#define AV_LOG_VERBOSE
Detailed information.
int16_t rgb2xyz_matrix[3][4]
enum AVPixelFormat dstFormat
Destination pixel format.
bayer, BGBG..(odd line), GRGR..(even line), 16-bit samples, little-endian */
int chrSrcHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source imag...
static av_always_inline int isYUV(enum AVPixelFormat pix_fmt)
static SwsVector * sws_getShiftedVec(SwsVector *a, int shift)
#define ROUNDED_DIV(a, b)
int32_t * vChrFilterPos
Array of vertical filter starting positions for each dst[i] for chroma planes.
int dstH
Height of destination luma/alpha planes.
planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
SwsFilter * sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, float lumaSharpen, float chromaSharpen, float chromaHShift, float chromaVShift, int verbose)
planar GBR 4:4:4 27bpp, big-endian
#define INLINE_MMX(flags)
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
uint16_t depth_minus1
Number of bits in the component minus 1.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
16bit gray, 16bit alpha (big-endian)
int16_t ** chrVPixBuf
Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
int32_t * hChrFilterPos
Array of horizontal filter starting positions for each dst[i] for chroma planes.
planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
int hLumFilterSize
Horizontal filter size for luma/alpha pixels.
SwsFunc ff_getSwsFunc(SwsContext *c)
Return function pointer to fastest main scaler path function depending on architecture and available ...
const char * description
human-readable description
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
static const struct endianess table[]
#define PPC_ALTIVEC(flags)
#define SWS_MAX_REDUCE_CUTOFF
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), big-endian
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
simple assert() macros that are a bit more flexible than ISO C assert().
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)
Print with av_log() a textual representation of the vector a if log_level <= av_log_level.
int vChrBufSize
Number of vertical chroma lines allocated in the ring buffer.
av_cold void sws_rgb2rgb_init(void)
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
void sws_scaleVec(SwsVector *a, double scalar)
Scale all the coefficients of a by the scalar value.
int chrDstW
Width of destination chroma planes.
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as lit...
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
void sws_normalizeVec(SwsVector *a, double height)
Scale all the coefficients of a so that their sum equals height.
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
struct SwsContext * sws_getCachedContext(struct SwsContext *context, int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Check if context can be reused, otherwise reallocate a new one.
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
#define RETCODE_USE_CASCADE
int32_t * hLumFilterPos
Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
void sws_freeFilter(SwsFilter *filter)
int hChrFilterSize
Horizontal filter size for chroma pixels.
SwsVector * sws_allocVec(int length)
Allocate and return an uninitialized vector with length coefficients.
as above, but U and V bytes are swapped
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
ptrdiff_t uv_offx2
offset (in bytes) between u and v planes
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_...
uint8_t * formatConvBuffer
#define INLINE_AMD3DNOW(flags)
int vLumBufSize
Number of vertical luma/alpha lines allocated in the ring buffer.
int16_t ** chrUPixBuf
Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
#define FF_CEIL_RSHIFT(a, b)
SwsVector * sws_getIdentityVec(void)
Allocate and return a vector with just one coefficient, with value 1.0.
void sws_freeContext(SwsContext *c)
Free the swscaler context swsContext.
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
packed YUV 4:2:2, 16bpp, Y0 Cr Y1 Cb
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), big-endian
packed RGB 8:8:8, 24bpp, BGRBGR...
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as big...
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
av_cold void ff_sws_init_range_convert(SwsContext *c)
unsigned swscale_version(void)
int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)
int srcColorspaceTable[4]
int dstW
Width of destination luma/alpha planes.
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as big...
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian
uint8_t * cascaded_tmp[4]
static const ScaleAlgorithm scale_algorithms[]
int32_t * vLumFilterPos
Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
#define AV_PIX_FMT_BGR555
int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
double * coeff
pointer to the list of coefficients
int flag
flag associated to the algorithm
#define AV_LOG_INFO
Standard information.
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
int dstColorspaceTable[4]
static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSize, int xInc, int srcW, int dstW, int filterAlign, int one, int flags, int cpu_flags, SwsVector *srcFilter, SwsVector *dstFilter, double param[2], int srcPos, int dstPos)
void(* rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size)
const AVClass * av_class
info on struct for av_log
int16_t xyz2rgb_matrix[3][4]
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
bayer, RGRG..(odd line), GBGB..(even line), 16-bit samples, big-endian */
void sws_freeVec(SwsVector *a)
planar GBR 4:4:4 30bpp, big-endian
#define AV_CPU_FLAG_MMX
standard MMX
bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, big-endian */
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
int chrDstH
Height of destination chroma planes.
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
planar GBR 4:4:4 42bpp, little-endian
#define SWS_ERROR_DIFFUSION
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
static SwsVector * sws_diffVec(SwsVector *a, SwsVector *b)
void sws_shiftVec(SwsVector *a, int shift)
int lumMmxextFilterCodeSize
Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes...
Describe the class of an AVClass context structure.
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
int vLumFilterSize
Vertical filter size for luma/alpha pixels.
static void handle_formats(SwsContext *c)
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
static av_always_inline av_const long int lrint(double x)
int chrMmxextFilterCodeSize
Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
planar GBR 4:4:4 42bpp, big-endian
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), big-endian
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), little-endian, X=unused/undefined ...
int16_t * vChrFilter
Array of vertical filter coefficients for chroma planes.
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
SwsVector * sws_cloneVec(SwsVector *a)
Allocate and return a clone of the vector a, that is a vector with the same coefficients as a...
bayer, BGBG..(odd line), GRGR..(even line), 16-bit samples, big-endian */
int16_t * hLumFilter
Array of horizontal filter coefficients for luma/alpha planes.
SwsContext * sws_alloc_context(void)
Allocate an empty SwsContext.
#define AV_PIX_FMT_BGR565
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), big-endian , X=unused/undefined
bayer, RGRG..(odd line), GBGB..(even line), 16-bit samples, little-endian */
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), big-endian, X=unused/undefined
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
static int handle_xyz(enum AVPixelFormat *format)
#define FF_ALLOC_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)
void sws_convVec(SwsVector *a, SwsVector *b)
const AVClass sws_context_class
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
#define INLINE_MMXEXT(flags)
static double sws_dcVec(SwsVector *a)
#define CONFIG_SWSCALE_ALPHA
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
double param[2]
Input parameters for scaling algorithms that need them.
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb...
planar GBRA 4:4:4:4 32bpp
#define FF_ALLOC_OR_GOTO(ctx, p, size, label)
planar GBR 4:4:4 27bpp, little-endian
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big...
enum AVPixelFormat srcFormat
Source pixel format.
planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV444P and setting color_...
bayer, RGRG..(odd line), GBGB..(even line), 8-bit samples */
packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
#define FFMPEG_CONFIGURATION
#define SWS_PARAM_DEFAULT
#define SWS_FULL_CHR_H_INP
SwsFunc swscale
Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be fre...
static av_always_inline int diff(const uint32_t a, const uint32_t b)
packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as lit...
int size_factor
size factor used when initing the filters
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
int srcFormatBpp
Number of bits per pixel of the source pixel format.
Y , 16bpp, little-endian.
uint8_t is_supported_endianness
static const double coeff[2][5]
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
16bit gray, 16bit alpha (little-endian)
int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported input format, 0 otherwise.
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
int32_t input_rgb2yuv_table[16+40 *4]
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), big-endian , X=unused/undefined
number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of...
int16_t * vLumFilter
Array of vertical filter coefficients for luma/alpha planes.
SwsVector * sws_getConstVec(double c, int length)
Allocate and return a vector with length coefficients, all with the same value c. ...
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
planar GBR 4:4:4 48bpp, little-endian
int16_t * hChrFilter
Array of horizontal filter coefficients for chroma planes.
#define av_malloc_array(a, b)
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), little-endian, X=unused/undefined ...
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), little-endian
int chrDstHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination...
int chrSrcW
Width of source chroma planes.
void ff_get_unscaled_swscale(SwsContext *c)
Set c->swscale to an unscaled converter if one exists for the specific source and destination formats...
planar GBRA 4:4:4:4 64bpp, little-endian
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
int srcW
Width of source luma/alpha planes.
packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
static void fill_xyztables(struct SwsContext *c)
int chrSrcVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image...
int flags
Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
AVPixelFormat
Pixel format.
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)
planar GBR 4:4:4 30bpp, little-endian
static SwsVector * sws_getConvVec(SwsVector *a, SwsVector *b)
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
#define LIBSWSCALE_VERSION_INT
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
const char * swscale_license(void)
Return the libswscale license.