23 #define _DEFAULT_SOURCE 24 #define _SVID_SOURCE // needed for MAP_ANONYMOUS 25 #define _DARWIN_C_SOURCE // needed for MAP_ANON 32 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS) 33 #define MAP_ANONYMOUS MAP_ANON 37 #define WIN32_LEAN_AND_MEAN 59 #undef attribute_deprecated 60 #define attribute_deprecated 66 #if !FF_API_SWS_VECTOR 88 #define LICENSE_PREFIX "libswscale license: " 298 return ((d * dist + c) * dist + b) * dist +
a;
301 b + 2.0 * c + 3.0 * d,
303 -b - 3.0 * c - 6.0 * d,
309 if (pos == -1 || pos <= -513) {
310 pos = (128 << chr_subsample) - 128;
313 return pos >> chr_subsample;
330 {
SWS_POINT,
"nearest neighbor / point", -1 },
333 {
SWS_X,
"experimental", 8 },
337 int *outFilterSize,
int xInc,
int srcW,
338 int dstW,
int filterAlign,
int one,
341 double param[2],
int srcPos,
int dstPos)
357 if (
FFABS(xInc - 0x10000) < 10 && srcPos == dstPos) {
361 dstW,
sizeof(*filter) * filterSize,
fail);
363 for (i = 0; i < dstW; i++) {
364 filter[i * filterSize] = fone;
372 dstW,
sizeof(*filter) * filterSize,
fail);
374 xDstInSrc = ((dstPos*(
int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
375 for (i = 0; i < dstW; i++) {
376 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
378 (*filterPos)[
i] = xx;
382 }
else if ((xInc <= (1 << 16) && (flags &
SWS_AREA)) ||
388 dstW,
sizeof(*filter) * filterSize,
fail);
390 xDstInSrc = ((dstPos*(
int64_t)xInc)>>8) - ((srcPos*0x8000LL)>>7);
391 for (i = 0; i < dstW; i++) {
392 int xx = (xDstInSrc - ((filterSize - 1) << 15) + (1 << 15)) >> 16;
395 (*filterPos)[
i] = xx;
397 for (j = 0; j < filterSize; j++) {
401 filter[i * filterSize + j] =
coeff;
411 if (flags & scale_algorithms[i].
flag && scale_algorithms[i].size_factor > 0) {
421 filterSize = 1 + sizeFactor;
423 filterSize = 1 + (sizeFactor * srcW + dstW - 1) / dstW;
425 filterSize =
FFMIN(filterSize, srcW - 2);
426 filterSize =
FFMAX(filterSize, 1);
429 dstW,
sizeof(*filter) * filterSize,
fail);
431 xDstInSrc = ((dstPos*(
int64_t)xInc)>>7) - ((srcPos*0x10000LL)>>7);
432 for (i = 0; i < dstW; i++) {
433 int xx = (xDstInSrc - (filterSize - 2) * (1LL<<16)) / (1 << 17);
435 (*filterPos)[
i] = xx;
436 for (j = 0; j < filterSize; j++) {
443 floatd = d * (1.0 / (1 << 30));
449 if (d >= 1LL << 31) {
456 coeff = (12 * (1 << 24) - 9 * B - 6 * C) * ddd +
457 (-18 * (1 << 24) + 12 * B + 6 * C) * dd +
458 (6 * (1 << 24) - 2 * B) * (1 << 30);
460 coeff = (-B - 6 *
C) * ddd +
461 (6 * B + 30 * C) * dd +
462 (-12 * B - 48 *
C) * d +
463 (8 * B + 24 * C) * (1 << 30);
465 coeff /= (1LL<<54)/fone;
466 }
else if (flags &
SWS_X) {
471 c = cos(floatd *
M_PI);
478 coeff = (c * 0.5 + 0.5) * fone;
481 if (d2 * xInc < -(1LL << (29 + 16)))
482 coeff = 1.0 * (1LL << (30 + 16));
483 else if (d2 * xInc < (1LL << (29 + 16)))
484 coeff = -d2 * xInc + (1LL << (29 + 16));
487 coeff *= fone >> (30 + 16);
490 coeff =
exp2(-p * floatd * floatd) * fone;
492 coeff = (d ? sin(floatd *
M_PI) / (floatd *
M_PI) : 1.0) * fone;
493 }
else if (flags & SWS_LANCZOS) {
495 coeff = (d ? sin(floatd *
M_PI) * sin(floatd * M_PI / p) /
496 (floatd * floatd * M_PI * M_PI / p) : 1.0) * fone;
500 coeff = (1 << 30) - d;
505 double p = -2.196152422706632;
511 filter[i * filterSize + j] =
coeff;
514 xDstInSrc += 2LL * xInc;
522 filter2Size = filterSize;
524 filter2Size += srcFilter->
length - 1;
526 filter2Size += dstFilter->
length - 1;
530 for (i = 0; i < dstW; i++) {
534 for (k = 0; k < srcFilter->
length; k++) {
535 for (j = 0; j < filterSize; j++)
536 filter2[i * filter2Size + k + j] +=
537 srcFilter->
coeff[k] * filter[i * filterSize + j];
540 for (j = 0; j < filterSize; j++)
541 filter2[i * filter2Size + j] = filter[i * filterSize + j];
545 (*filterPos)[
i] += (filterSize - 1) / 2 - (filter2Size - 1) / 2;
552 for (i = dstW - 1; i >= 0; i--) {
553 int min = filter2Size;
558 for (j = 0; j < filter2Size; j++) {
560 cutOff +=
FFABS(filter2[i * filter2Size]);
567 if (i < dstW - 1 && (*filterPos)[i] >= (*filterPos)[i + 1])
571 for (k = 1; k < filter2Size; k++)
572 filter2[i * filter2Size + k - 1] = filter2[i * filter2Size + k];
573 filter2[i * filter2Size + k - 1] = 0;
579 for (j = filter2Size - 1; j > 0; j--) {
580 cutOff +=
FFABS(filter2[i * filter2Size + j]);
587 if (min > minFilterSize)
593 if (minFilterSize < 5)
599 if (minFilterSize < 3)
605 if (minFilterSize == 1 && filterAlign == 2)
610 filterSize = (minFilterSize + (filterAlign - 1)) & (~(filterAlign - 1));
620 *outFilterSize = filterSize;
624 "SwScaler: reducing / aligning filtersize %d -> %d\n",
625 filter2Size, filterSize);
627 for (i = 0; i < dstW; i++) {
630 for (j = 0; j < filterSize; j++) {
631 if (j >= filter2Size)
632 filter[i * filterSize + j] = 0;
634 filter[i * filterSize + j] = filter2[i * filter2Size + j];
636 filter[i * filterSize + j] = 0;
643 for (i = 0; i < dstW; i++) {
645 if ((*filterPos)[i] < 0) {
647 for (j = 1; j < filterSize; j++) {
648 int left =
FFMAX(j + (*filterPos)[i], 0);
649 filter[i * filterSize + left] += filter[i * filterSize + j];
650 filter[i * filterSize + j] = 0;
655 if ((*filterPos)[i] + filterSize > srcW) {
656 int shift = (*filterPos)[
i] +
FFMIN(filterSize - srcW, 0);
659 for (j = filterSize - 1; j >= 0; j--) {
660 if ((*filterPos)[i] + j >= srcW) {
661 acc += filter[i * filterSize + j];
662 filter[i * filterSize + j] = 0;
665 for (j = filterSize - 1; j >= 0; j--) {
667 filter[i * filterSize + j] = 0;
669 filter[i * filterSize + j] = filter[i * filterSize + j -
shift];
674 filter[i * filterSize + srcW - 1 - (*filterPos)[
i]] +=
acc;
678 if ((*filterPos)[i] + filterSize > srcW) {
679 for (j = 0; j < filterSize; j++) {
680 av_assert0((*filterPos)[i] + j < srcW || !filter[i * filterSize + j]);
688 (dstW + 3), *outFilterSize *
sizeof(int16_t),
fail);
691 for (i = 0; i < dstW; i++) {
696 for (j = 0; j < filterSize; j++) {
697 sum += filter[i * filterSize + j];
699 sum = (sum + one / 2) / one;
704 for (j = 0; j < *outFilterSize; j++) {
707 (*outFilter)[i * (*outFilterSize) + j] = intV;
708 error = v - intV * sum;
712 (*filterPos)[dstW + 0] =
713 (*filterPos)[dstW + 1] =
714 (*filterPos)[dstW + 2] = (*filterPos)[dstW - 1];
716 for (i = 0; i < *outFilterSize; i++) {
717 int k = (dstW - 1) * (*outFilterSize) +
i;
718 (*outFilter)[k + 1 * (*outFilterSize)] =
719 (*outFilter)[k + 2 * (*outFilterSize)] =
720 (*outFilter)[k + 3 * (*outFilterSize)] = (*outFilter)[k];
744 static const int8_t
map[] = {
769 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
770 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
771 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
772 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
773 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
774 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
775 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
776 -1 , -1 , -1 , -1 , -1 , -1 , -1 , -1 ,
834 static const int16_t xyz2rgb_matrix[3][4] = {
835 {13270, -6295, -2041},
837 { 228, -835, 4329} };
838 static const int16_t rgb2xyz_matrix[3][4] = {
842 static int16_t xyzgamma_tab[4096], rgbgamma_tab[4096], xyzgammainv_tab[4096], rgbgammainv_tab[4096];
851 if (rgbgamma_tab[4095])
855 for (i = 0; i < 4096; i++) {
856 xyzgamma_tab[
i] =
lrint(pow(i / 4095.0, xyzgamma) * 4095.0);
857 rgbgamma_tab[
i] =
lrint(pow(i / 4095.0, rgbgamma) * 4095.0);
858 xyzgammainv_tab[
i] =
lrint(pow(i / 4095.0, xyzgammainv) * 4095.0);
859 rgbgammainv_tab[
i] =
lrint(pow(i / 4095.0, rgbgammainv) * 4095.0);
864 int srcRange,
const int table[4],
int dstRange,
865 int brightness,
int contrast,
int saturation)
920 int tmp_width, tmp_height;
926 av_log(c,
AV_LOG_VERBOSE,
"YUV color matrix differs for YUV->YUV, using intermediate RGB to convert\n");
942 if (srcW*srcH > dstW*dstH) {
951 tmp_width, tmp_height, tmp_format, 64);
956 tmp_width, tmp_height, tmp_format,
967 srcRange, table, dstRange,
968 brightness, contrast, saturation);
976 srcRange, table, dstRange,
977 0, 1 << 16, 1 << 16);
985 contrast, saturation);
990 contrast, saturation);
999 int *srcRange,
int **
table,
int *dstRange,
1000 int *brightness,
int *contrast,
int *saturation)
1102 tbl = (uint16_t*)
av_malloc(
sizeof(uint16_t) * 1 << 16);
1106 for (i = 0; i < 65536; ++
i) {
1107 tbl[
i] = pow(i / 65535.0, e) * 65535.0;
1174 int usesVFilter, usesHFilter;
1181 int dst_stride =
FFALIGN(dstW *
sizeof(int16_t) + 66, 16);
1189 static const float float_mult = 1.0f / 255.0f;
1197 unscaled = (srcW == dstW && srcH == dstH);
1203 av_log(c,
AV_LOG_WARNING,
"deprecated pixel format used, make sure you did set range correctly\n");
1249 if (dstW < srcW && dstH < srcH)
1251 else if (dstW > srcW && dstH > srcH)
1256 }
else if (i & (i - 1)) {
1258 "Exactly one scaler algorithm must be chosen, got %X\n", i);
1262 if (srcW < 1 || srcH < 1 || dstW < 1 || dstH < 1) {
1266 srcW, srcH, dstW, dstH);
1270 if (srcW < 8 || dstW < 8) {
1277 dstFilter = &dummyFilter;
1279 srcFilter = &dummyFilter;
1285 c->
vRounder = 4 * 0x0001000100010001ULL;
1287 usesVFilter = (srcFilter->
lumV && srcFilter->
lumV->
length > 1) ||
1291 usesHFilter = (srcFilter->
lumH && srcFilter->
lumH->
length > 1) ||
1309 && !(c->
flags & SWS_FAST_BILINEAR)
1311 av_log(c,
AV_LOG_DEBUG,
"Forcing full internal H chroma due to input having non subsampled chroma\n");
1328 if (!(flags & SWS_FULL_CHR_H_INT)) {
1331 "Desired dithering only supported in full chroma interpolation for destination format '%s'\n",
1337 if (flags & SWS_FULL_CHR_H_INT) {
1340 "Ordered dither is not supported in full chroma interpolation for destination format '%s'\n",
1347 if (!(flags & SWS_FULL_CHR_H_INT)) {
1349 "%s output is not supported with half chroma resolution, switching to full\n",
1358 if (flags & SWS_FULL_CHR_H_INT &&
1381 "full chroma interpolation for destination format '%s' not yet implemented\n",
1383 flags &= ~SWS_FULL_CHR_H_INT;
1386 if (
isAnyRGB(dstFormat) && !(flags & SWS_FULL_CHR_H_INT))
1411 (flags & SWS_FAST_BILINEAR)))
1442 "output width is not a multiple of 32 -> no MMXEXT scaler\n");
1459 if (flags & SWS_FAST_BILINEAR) {
1476 if (!unscaled && c->
gamma_flag && (srcFormat != tmpFmt || dstFormat != tmpFmt)) {
1481 srcW, srcH, tmpFmt, 64);
1487 flags, NULL, NULL, c->
param);
1494 flags, srcFilter, dstFilter, c->
param);
1517 if (dstFormat != tmpFmt) {
1519 dstW, dstH, tmpFmt, 64);
1524 dstW, dstH, dstFormat,
1525 flags, NULL, NULL, c->
param);
1538 srcW, srcH, tmpFormat, 64);
1543 srcW, srcH, tmpFormat,
1544 flags, srcFilter, NULL, c->
param);
1549 dstW, dstH, dstFormat,
1550 flags, NULL, dstFilter, c->
param);
1558 for (i = 0; i < 256; ++
i){
1565 (!unscaled || unscaled && dstFormat != srcFormat && (srcFormat !=
AV_PIX_FMT_GRAYF32 ||
1575 dstFormat != tmpFormat ||
1576 usesHFilter || usesVFilter ||
1581 srcW, srcH, tmpFormat, 64);
1586 srcW, srcH, tmpFormat,
1596 dstW, dstH, dstFormat,
1611 #if HAVE_MMAP && HAVE_MPROTECT && defined(MAP_ANONYMOUS) 1619 #if HAVE_MMXEXT_INLINE 1625 NULL, NULL, NULL, 4);
1629 PROT_READ | PROT_WRITE,
1630 MAP_PRIVATE | MAP_ANONYMOUS,
1633 PROT_READ | PROT_WRITE,
1634 MAP_PRIVATE | MAP_ANONYMOUS,
1636 #elif HAVE_VIRTUALALLOC 1640 PAGE_EXECUTE_READWRITE);
1644 PAGE_EXECUTE_READWRITE);
1650 #ifdef MAP_ANONYMOUS 1680 const int filterAlign =
X86_MMX(cpu_flags) ? 4 :
1686 srcW, dstW, filterAlign, 1 << 14,
1688 cpu_flags, srcFilter->
lumH, dstFilter->
lumH,
1696 (flags & SWS_BICUBLIN) ? (flags |
SWS_BILINEAR) : flags,
1697 cpu_flags, srcFilter->
chrH, dstFilter->
chrH,
1707 const int filterAlign =
X86_MMX(cpu_flags) ? 2 :
1712 c->
lumYInc, srcH, dstH, filterAlign, (1 << 12),
1714 cpu_flags, srcFilter->
lumV, dstFilter->
lumV,
1721 filterAlign, (1 << 12),
1722 (flags & SWS_BICUBLIN) ? (flags |
SWS_BILINEAR) : flags,
1723 cpu_flags, srcFilter->
chrV, dstFilter->
chrV,
1736 short *p = (
short *)&c->vYCoeffsBank[i];
1737 for (j = 0; j < 8; j++)
1743 short *p = (
short *)&c->vCCoeffsBank[i];
1744 for (j = 0; j < 8; j++)
1750 for (i = 0; i < 4; i++)
1762 const char *scaler =
NULL, *cpucaps;
1765 if (flags & scale_algorithms[i].
flag) {
1771 scaler =
"ehh flags invalid?!";
1792 cpucaps =
"AltiVec";
1800 "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1803 "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1809 if (unscaled && !usesHFilter && !usesVFilter &&
1817 if (flags & SWS_PRINT_INFO)
1819 "using alpha blendaway %s -> %s special converter\n",
1825 if (unscaled && !usesHFilter && !usesVFilter &&
1831 if (flags & SWS_PRINT_INFO)
1833 "using unscaled %s -> %s special converter\n",
1843 int tmpW = sqrt(srcW * (
int64_t)dstW);
1844 int tmpH = sqrt(srcH * (
int64_t)dstH);
1850 if (srcW*(
int64_t)srcH <= 4LL*dstW*dstH)
1854 tmpW, tmpH, tmpFormat, 64);
1859 tmpW, tmpH, tmpFormat,
1860 flags, srcFilter, NULL, c->
param);
1865 dstW, dstH, dstFormat,
1866 flags, NULL, dstFilter, c->
param);
1876 int flags,
const double *param)
1892 c->
param[0] = param[0];
1893 c->
param[1] = param[1];
1902 SwsFilter *dstFilter,
const double *param)
1907 dstW, dstH, dstFormat,
1923 for (i=0; i<a->
length; i++)
1932 for (i=0; i<a->
length; i++)
1937 float lumaSharpen,
float chromaSharpen,
1938 float chromaHShift,
float chromaVShift,
1945 if (lumaGBlur != 0.0) {
1953 if (chromaGBlur != 0.0) {
1964 if (chromaSharpen != 0.0) {
1975 if (lumaSharpen != 0.0) {
1986 if (chromaHShift != 0.0)
1989 if (chromaVShift != 0.0)
2023 if(length <= 0 || length > INT_MAX/
sizeof(
double))
2038 const int length = (
int)(variance * quality + 0.5) | 1;
2040 double middle = (length - 1) * 0.5;
2043 if(variance < 0 || quality < 0)
2051 for (i = 0; i < length; i++) {
2052 double dist = i - middle;
2053 vec->
coeff[
i] =
exp(-dist * dist / (2 * variance * variance)) /
2054 sqrt(2 * variance *
M_PI);
2066 #if !FF_API_SWS_VECTOR 2077 for (i = 0; i < length; i++)
2087 #if !FF_API_SWS_VECTOR 2100 for (i = 0; i < a->
length; i++)
2110 for (i = 0; i < a->
length; i++)
2111 a->
coeff[i] *= scalar;
2119 #if FF_API_SWS_VECTOR 2129 for (i = 0; i < a->
length; i++) {
2130 for (j = 0; j < b->
length; j++) {
2148 for (i = 0; i < a->
length; i++)
2156 #if FF_API_SWS_VECTOR 2166 for (i = 0; i < a->
length; i++)
2185 for (i = 0; i < a->
length; i++) {
2186 vec->
coeff[i + (length - 1) / 2 -
2193 #if !FF_API_SWS_VECTOR 2209 #if !FF_API_SWS_VECTOR 2225 #if FF_API_SWS_VECTOR 2269 #if !FF_API_SWS_VECTOR 2279 for (i = 0; i < a->
length; i++)
2280 if (a->
coeff[i] > max)
2283 for (i = 0; i < a->
length; i++)
2284 if (a->
coeff[i] < min)
2289 for (i = 0; i < a->
length; i++) {
2290 int x = (
int)((a->
coeff[i] - min) * 60.0 / range + 0.5);
2291 av_log(log_ctx, log_level,
"%1.3f ", a->
coeff[i]);
2293 av_log(log_ctx, log_level,
" ");
2294 av_log(log_ctx, log_level,
"|\n");
2325 for (i = 0; i < 4; i++)
2348 #elif HAVE_VIRTUALALLOC 2385 const double *
param)
2393 param = default_param;
2396 (context->
srcW != srcW ||
2397 context->
srcH != srcH ||
2399 context->
dstW != dstW ||
2400 context->
dstH != dstH ||
2402 context->
flags != flags ||
2403 context->
param[0] != param[0] ||
2404 context->
param[1] != param[1])) {
2424 context->
param[0] = param[0];
2425 context->
param[1] = param[1];
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
IEEE-754 single precision Y, 32bpp, big-endian.
packed YUV 4:2:2 like YUYV422, 20bpp, data in the high bits, little-endian
planar GBR 4:4:4:4 40bpp, little-endian
int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported output format, 0 otherwise.
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-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 const FormatEntry format_entries[]
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
static const char * format[]
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)
int ff_free_filters(SwsContext *c)
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)
8 bits gray, 8 bits alpha
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.
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), 12b alpha, little-endian ...
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)
#define AV_PIX_FMT_GBRP10
bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, little-endian
int dstFormatBpp
Number of bits per pixel of the destination pixel format.
#define AV_PIX_FMT_BGRA64
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)
Convenience header that includes libavutil's core.
static int handle_jpeg(enum AVPixelFormat *format)
int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
static int isnan_vec(SwsVector *a)
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
static atomic_int cpu_flags
const int32_t ff_yuv2rgb_coeffs[11][4]
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
static void error(const char *err)
Y , 12bpp, little-endian.
enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt)
Utility function to swap the endianness of a pixel format.
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 ...
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 ...
void sws_convVec(SwsVector *a, SwsVector *b)
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)
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, int clip)
static uint16_t * alloc_gamma_tbl(double e)
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...
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), 12b alpha, little-endian ...
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
av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
Initialize the swscaler context sws_context.
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
8 bits with AV_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...
SwsVector * sws_cloneVec(SwsVector *a)
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...
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), little-endian, X=unused/undefined ...
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
SwsVector * sws_getConstVec(double c, int length)
Allocate and return a vector with length coefficients, all with the same value c. ...
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), big-endian
planar GBR 4:4:4 48bpp, big-endian
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_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 AV_PIX_FMT_YUV422P and setting col...
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
#define AV_LOG_VERBOSE
Detailed information.
int16_t rgb2xyz_matrix[3][4]
#define AV_PIX_FMT_YUV444P16
Y , 10bpp, little-endian.
enum AVPixelFormat dstFormat
Destination pixel format.
int ff_sws_alphablendaway(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
planar YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), big-endian
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)
float uint2float_lut[256]
static SwsVector * sws_getShiftedVec(SwsVector *a, int shift)
static const uint16_t table[]
#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)
#define i(width, name, range_min, range_max)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
16 bits gray, 16 bits alpha (big-endian)
like NV12, with 16bpp per component, big-endian
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.
#define PPC_ALTIVEC(flags)
#define SWS_MAX_REDUCE_CUTOFF
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
void sws_subVec(SwsVector *a, SwsVector *b)
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
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.
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
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
like NV12, with 16bpp per component, little-endian
planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
#define AV_PIX_FMT_YUV444P10
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits, big-endian
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...
uint8_t * cascaded1_tmp[4]
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
static enum AVPixelFormat alphaless_fmt(enum AVPixelFormat fmt)
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.
planar YUV 4:4:4, 24bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
#define AV_PIX_FMT_YUV422P9
as above, but U and V bytes are swapped
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
planar GBR 4:4:4:4 48bpp, big-endian
ptrdiff_t uv_offx2
offset (in bytes) between u and v planes
planar GBR 4:4:4:4 40bpp, big-endian
#define AV_PIX_FMT_GBRP16
IEEE-754 single precision planar GBR 4:4:4, 96bpp, little-endian.
#define AV_PIX_FMT_GRAY16
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
uint8_t * formatConvBuffer
#define INLINE_AMD3DNOW(flags)
static av_always_inline int isBayer(enum AVPixelFormat pix_fmt)
av_cold void ff_sws_rgb2rgb_init(void)
void sws_shiftVec(SwsVector *a, int shift)
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
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
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)
SwsContext * sws_alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, const double *param)
Allocate and return an SwsContext.
unsigned swscale_version(void)
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits, little-endian
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.
#define AV_PIX_FMT_YUV444P9
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]
#define FF_ARRAY_ELEMS(a)
static const ScaleAlgorithm scale_algorithms[]
int cascaded1_tmpStride[4]
planar GBR 4:4:4:4 48bpp, little-endian
#define AV_PIX_FMT_YUV420P16
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]
#define AV_PIX_FMT_GRAYF32
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)
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 YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
planar GBR 4:4:4 42bpp, little-endian
#define SWS_ERROR_DIFFUSION
Replacements for frequently missing libm functions.
#define AV_PIX_FMT_YUV420P10
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)
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)
as above, but U and V bytes are swapped
IEEE-754 single precision planar GBR 4:4:4, 96bpp, big-endian.
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
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), 12b alpha, big-endian ...
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
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
#define AV_PIX_FMT_YUV420P9
const VDPAUPixFmtMap * map
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.
int ff_init_filters(SwsContext *c)
Y , 14bpp, little-endian.
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
#define AV_PIX_FMT_GBRP12
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
#define flags(name, subs,...)
#define AV_PIX_FMT_YUV422P10
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)
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
void sws_addVec(SwsVector *a, SwsVector *b)
#define INLINE_MMXEXT(flags)
static double sws_dcVec(SwsVector *a)
#define CONFIG_SWSCALE_ALPHA
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)
IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, little-endian.
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 AV_PIX_FMT_YUV444P and setting col...
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
struct SwsContext * cascaded_context[3]
#define SWS_PARAM_DEFAULT
#define SWS_FULL_CHR_H_INP
IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, big-endian.
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.
const AVClass ff_sws_context_class
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 ...
16 bits gray, 16 bits alpha (little-endian)
int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported input format, 0 otherwise.
SwsVector * sws_getIdentityVec(void)
Allocate and return a vector with just one coefficient, with value 1.0.
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
int16_t * vLumFilter
Array of vertical filter coefficients for luma/alpha planes.
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
planar GBR 4:4:4 48bpp, little-endian
static void makenan_vec(SwsVector *a)
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.
static av_always_inline int isFloat(enum AVPixelFormat pix_fmt)
int depth
Number of bits in the component.
IEEE-754 single precision Y, 32bpp, little-endian.
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.
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
void(* rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size)
#define AV_PIX_FMT_YUV422P16
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
static av_always_inline int isNBPS(enum AVPixelFormat pix_fmt)
#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
packed AYUV 4:4:4,64bpp (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
#define AV_CEIL_RSHIFT(a, b)
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), 12b alpha, big-endian ...
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.