LCOV - code coverage report
Current view: top level - libavfilter - vf_colorspace.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 512 0.0 %
Date: 2017-12-13 10:57:33 Functions: 0 18 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : /*
      22             :  * @file
      23             :  * Convert between colorspaces.
      24             :  */
      25             : 
      26             : #include "libavutil/avassert.h"
      27             : #include "libavutil/opt.h"
      28             : #include "libavutil/pixdesc.h"
      29             : #include "libavutil/pixfmt.h"
      30             : 
      31             : #include "avfilter.h"
      32             : #include "colorspacedsp.h"
      33             : #include "formats.h"
      34             : #include "internal.h"
      35             : #include "video.h"
      36             : 
      37             : enum DitherMode {
      38             :     DITHER_NONE,
      39             :     DITHER_FSB,
      40             :     DITHER_NB,
      41             : };
      42             : 
      43             : enum Colorspace {
      44             :     CS_UNSPECIFIED,
      45             :     CS_BT470M,
      46             :     CS_BT470BG,
      47             :     CS_BT601_6_525,
      48             :     CS_BT601_6_625,
      49             :     CS_BT709,
      50             :     CS_SMPTE170M,
      51             :     CS_SMPTE240M,
      52             :     CS_BT2020,
      53             :     CS_NB,
      54             : };
      55             : 
      56             : enum Whitepoint {
      57             :     WP_D65,
      58             :     WP_C,
      59             :     WP_DCI,
      60             :     WP_E,
      61             :     WP_NB,
      62             : };
      63             : 
      64             : enum WhitepointAdaptation {
      65             :     WP_ADAPT_BRADFORD,
      66             :     WP_ADAPT_VON_KRIES,
      67             :     NB_WP_ADAPT_NON_IDENTITY,
      68             :     WP_ADAPT_IDENTITY = NB_WP_ADAPT_NON_IDENTITY,
      69             :     NB_WP_ADAPT,
      70             : };
      71             : 
      72             : static const enum AVColorTransferCharacteristic default_trc[CS_NB + 1] = {
      73             :     [CS_UNSPECIFIED] = AVCOL_TRC_UNSPECIFIED,
      74             :     [CS_BT470M]      = AVCOL_TRC_GAMMA22,
      75             :     [CS_BT470BG]     = AVCOL_TRC_GAMMA28,
      76             :     [CS_BT601_6_525] = AVCOL_TRC_SMPTE170M,
      77             :     [CS_BT601_6_625] = AVCOL_TRC_SMPTE170M,
      78             :     [CS_BT709]       = AVCOL_TRC_BT709,
      79             :     [CS_SMPTE170M]   = AVCOL_TRC_SMPTE170M,
      80             :     [CS_SMPTE240M]   = AVCOL_TRC_SMPTE240M,
      81             :     [CS_BT2020]      = AVCOL_TRC_BT2020_10,
      82             :     [CS_NB]          = AVCOL_TRC_UNSPECIFIED,
      83             : };
      84             : 
      85             : static const enum AVColorPrimaries default_prm[CS_NB + 1] = {
      86             :     [CS_UNSPECIFIED] = AVCOL_PRI_UNSPECIFIED,
      87             :     [CS_BT470M]      = AVCOL_PRI_BT470M,
      88             :     [CS_BT470BG]     = AVCOL_PRI_BT470BG,
      89             :     [CS_BT601_6_525] = AVCOL_PRI_SMPTE170M,
      90             :     [CS_BT601_6_625] = AVCOL_PRI_BT470BG,
      91             :     [CS_BT709]       = AVCOL_PRI_BT709,
      92             :     [CS_SMPTE170M]   = AVCOL_PRI_SMPTE170M,
      93             :     [CS_SMPTE240M]   = AVCOL_PRI_SMPTE240M,
      94             :     [CS_BT2020]      = AVCOL_PRI_BT2020,
      95             :     [CS_NB]          = AVCOL_PRI_UNSPECIFIED,
      96             : };
      97             : 
      98             : static const enum AVColorSpace default_csp[CS_NB + 1] = {
      99             :     [CS_UNSPECIFIED] = AVCOL_SPC_UNSPECIFIED,
     100             :     [CS_BT470M]      = AVCOL_SPC_SMPTE170M,
     101             :     [CS_BT470BG]     = AVCOL_SPC_BT470BG,
     102             :     [CS_BT601_6_525] = AVCOL_SPC_SMPTE170M,
     103             :     [CS_BT601_6_625] = AVCOL_SPC_BT470BG,
     104             :     [CS_BT709]       = AVCOL_SPC_BT709,
     105             :     [CS_SMPTE170M]   = AVCOL_SPC_SMPTE170M,
     106             :     [CS_SMPTE240M]   = AVCOL_SPC_SMPTE240M,
     107             :     [CS_BT2020]      = AVCOL_SPC_BT2020_NCL,
     108             :     [CS_NB]          = AVCOL_SPC_UNSPECIFIED,
     109             : };
     110             : 
     111             : struct ColorPrimaries {
     112             :     enum Whitepoint wp;
     113             :     double xr, yr, xg, yg, xb, yb;
     114             : };
     115             : 
     116             : struct TransferCharacteristics {
     117             :     double alpha, beta, gamma, delta;
     118             : };
     119             : 
     120             : struct LumaCoefficients {
     121             :     double cr, cg, cb;
     122             : };
     123             : 
     124             : struct WhitepointCoefficients {
     125             :     double xw, yw;
     126             : };
     127             : 
     128             : typedef struct ColorSpaceContext {
     129             :     const AVClass *class;
     130             : 
     131             :     ColorSpaceDSPContext dsp;
     132             : 
     133             :     enum Colorspace user_all, user_iall;
     134             :     enum AVColorSpace in_csp, out_csp, user_csp, user_icsp;
     135             :     enum AVColorRange in_rng, out_rng, user_rng, user_irng;
     136             :     enum AVColorTransferCharacteristic in_trc, out_trc, user_trc, user_itrc;
     137             :     enum AVColorPrimaries in_prm, out_prm, user_prm, user_iprm;
     138             :     enum AVPixelFormat in_format, user_format;
     139             :     int fast_mode;
     140             :     enum DitherMode dither;
     141             :     enum WhitepointAdaptation wp_adapt;
     142             : 
     143             :     int16_t *rgb[3];
     144             :     ptrdiff_t rgb_stride;
     145             :     unsigned rgb_sz;
     146             :     int *dither_scratch[3][2], *dither_scratch_base[3][2];
     147             : 
     148             :     const struct ColorPrimaries *in_primaries, *out_primaries;
     149             :     int lrgb2lrgb_passthrough;
     150             :     DECLARE_ALIGNED(16, int16_t, lrgb2lrgb_coeffs)[3][3][8];
     151             : 
     152             :     const struct TransferCharacteristics *in_txchr, *out_txchr;
     153             :     int rgb2rgb_passthrough;
     154             :     int16_t *lin_lut, *delin_lut;
     155             : 
     156             :     const struct LumaCoefficients *in_lumacoef, *out_lumacoef;
     157             :     int yuv2yuv_passthrough, yuv2yuv_fastmode;
     158             :     DECLARE_ALIGNED(16, int16_t, yuv2rgb_coeffs)[3][3][8];
     159             :     DECLARE_ALIGNED(16, int16_t, rgb2yuv_coeffs)[3][3][8];
     160             :     DECLARE_ALIGNED(16, int16_t, yuv2yuv_coeffs)[3][3][8];
     161             :     DECLARE_ALIGNED(16, int16_t, yuv_offset)[2 /* in, out */][8];
     162             :     yuv2rgb_fn yuv2rgb;
     163             :     rgb2yuv_fn rgb2yuv;
     164             :     rgb2yuv_fsb_fn rgb2yuv_fsb;
     165             :     yuv2yuv_fn yuv2yuv;
     166             :     double yuv2rgb_dbl_coeffs[3][3], rgb2yuv_dbl_coeffs[3][3];
     167             :     int in_y_rng, in_uv_rng, out_y_rng, out_uv_rng;
     168             : 
     169             :     int did_warn_range;
     170             : } ColorSpaceContext;
     171             : 
     172             : // FIXME deal with odd width/heights
     173             : // FIXME faster linearize/delinearize implementation (integer pow)
     174             : // FIXME bt2020cl support (linearization between yuv/rgb step instead of between rgb/xyz)
     175             : // FIXME test that the values in (de)lin_lut don't exceed their container storage
     176             : // type size (only useful if we keep the LUT and don't move to fast integer pow)
     177             : // FIXME dithering if bitdepth goes down?
     178             : // FIXME bitexact for fate integration?
     179             : 
     180             : static const double ycgco_matrix[3][3] =
     181             : {
     182             :     {  0.25, 0.5,  0.25 },
     183             :     { -0.25, 0.5, -0.25 },
     184             :     {  0.5,  0,   -0.5  },
     185             : };
     186             : 
     187             : static const double gbr_matrix[3][3] =
     188             : {
     189             :     { 0,    1,   0   },
     190             :     { 0,   -0.5, 0.5 },
     191             :     { 0.5, -0.5, 0   },
     192             : };
     193             : 
     194             : /*
     195             :  * All constants explained in e.g. https://linuxtv.org/downloads/v4l-dvb-apis/ch02s06.html
     196             :  * The older ones (bt470bg/m) are also explained in their respective ITU docs
     197             :  * (e.g. https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.470-5-199802-S!!PDF-E.pdf)
     198             :  * whereas the newer ones can typically be copied directly from wikipedia :)
     199             :  */
     200             : static const struct LumaCoefficients luma_coefficients[AVCOL_SPC_NB] = {
     201             :     [AVCOL_SPC_FCC]        = { 0.30,   0.59,   0.11   },
     202             :     [AVCOL_SPC_BT470BG]    = { 0.299,  0.587,  0.114  },
     203             :     [AVCOL_SPC_SMPTE170M]  = { 0.299,  0.587,  0.114  },
     204             :     [AVCOL_SPC_BT709]      = { 0.2126, 0.7152, 0.0722 },
     205             :     [AVCOL_SPC_SMPTE240M]  = { 0.212,  0.701,  0.087  },
     206             :     [AVCOL_SPC_YCOCG]      = { 0.25,   0.5,    0.25   },
     207             :     [AVCOL_SPC_RGB]        = { 1,      1,      1      },
     208             :     [AVCOL_SPC_BT2020_NCL] = { 0.2627, 0.6780, 0.0593 },
     209             :     [AVCOL_SPC_BT2020_CL]  = { 0.2627, 0.6780, 0.0593 },
     210             : };
     211             : 
     212           0 : static const struct LumaCoefficients *get_luma_coefficients(enum AVColorSpace csp)
     213             : {
     214             :     const struct LumaCoefficients *coeffs;
     215             : 
     216           0 :     if (csp >= AVCOL_SPC_NB)
     217           0 :         return NULL;
     218           0 :     coeffs = &luma_coefficients[csp];
     219           0 :     if (!coeffs->cr)
     220           0 :         return NULL;
     221             : 
     222           0 :     return coeffs;
     223             : }
     224             : 
     225           0 : static void fill_rgb2yuv_table(const struct LumaCoefficients *coeffs,
     226             :                                double rgb2yuv[3][3])
     227             : {
     228             :     double bscale, rscale;
     229             : 
     230             :     // special ycgco matrix
     231           0 :     if (coeffs->cr == 0.25 && coeffs->cg == 0.5 && coeffs->cb == 0.25) {
     232           0 :         memcpy(rgb2yuv, ycgco_matrix, sizeof(double) * 9);
     233           0 :         return;
     234           0 :     } else if (coeffs->cr == 1 && coeffs->cg == 1 && coeffs->cb == 1) {
     235           0 :         memcpy(rgb2yuv, gbr_matrix, sizeof(double) * 9);
     236           0 :         return;
     237             :     }
     238             : 
     239           0 :     rgb2yuv[0][0] = coeffs->cr;
     240           0 :     rgb2yuv[0][1] = coeffs->cg;
     241           0 :     rgb2yuv[0][2] = coeffs->cb;
     242           0 :     bscale = 0.5 / (coeffs->cb - 1.0);
     243           0 :     rscale = 0.5 / (coeffs->cr - 1.0);
     244           0 :     rgb2yuv[1][0] = bscale * coeffs->cr;
     245           0 :     rgb2yuv[1][1] = bscale * coeffs->cg;
     246           0 :     rgb2yuv[1][2] = 0.5;
     247           0 :     rgb2yuv[2][0] = 0.5;
     248           0 :     rgb2yuv[2][1] = rscale * coeffs->cg;
     249           0 :     rgb2yuv[2][2] = rscale * coeffs->cb;
     250             : }
     251             : 
     252             : // FIXME I'm pretty sure gamma22/28 also have a linear toe slope, but I can't
     253             : // find any actual tables that document their real values...
     254             : // See http://www.13thmonkey.org/~boris/gammacorrection/ first graph why it matters
     255             : static const struct TransferCharacteristics transfer_characteristics[AVCOL_TRC_NB] = {
     256             :     [AVCOL_TRC_BT709]     = { 1.099,  0.018,  0.45, 4.5 },
     257             :     [AVCOL_TRC_GAMMA22]   = { 1.0,    0.0,    1.0 / 2.2, 0.0 },
     258             :     [AVCOL_TRC_GAMMA28]   = { 1.0,    0.0,    1.0 / 2.8, 0.0 },
     259             :     [AVCOL_TRC_SMPTE170M] = { 1.099,  0.018,  0.45, 4.5 },
     260             :     [AVCOL_TRC_SMPTE240M] = { 1.1115, 0.0228, 0.45, 4.0 },
     261             :     [AVCOL_TRC_IEC61966_2_1] = { 1.055, 0.0031308, 1.0 / 2.4, 12.92 },
     262             :     [AVCOL_TRC_IEC61966_2_4] = { 1.099, 0.018, 0.45, 4.5 },
     263             :     [AVCOL_TRC_BT2020_10] = { 1.099,  0.018,  0.45, 4.5 },
     264             :     [AVCOL_TRC_BT2020_12] = { 1.0993, 0.0181, 0.45, 4.5 },
     265             : };
     266             : 
     267             : static const struct TransferCharacteristics *
     268           0 :     get_transfer_characteristics(enum AVColorTransferCharacteristic trc)
     269             : {
     270             :     const struct TransferCharacteristics *coeffs;
     271             : 
     272           0 :     if (trc >= AVCOL_TRC_NB)
     273           0 :         return NULL;
     274           0 :     coeffs = &transfer_characteristics[trc];
     275           0 :     if (!coeffs->alpha)
     276           0 :         return NULL;
     277             : 
     278           0 :     return coeffs;
     279             : }
     280             : 
     281             : static const struct WhitepointCoefficients whitepoint_coefficients[WP_NB] = {
     282             :     [WP_D65] = { 0.3127, 0.3290 },
     283             :     [WP_C]   = { 0.3100, 0.3160 },
     284             :     [WP_DCI] = { 0.3140, 0.3510 },
     285             :     [WP_E]   = { 1/3.0f, 1/3.0f },
     286             : };
     287             : 
     288             : static const struct ColorPrimaries color_primaries[AVCOL_PRI_NB] = {
     289             :     [AVCOL_PRI_BT709]     = { WP_D65, 0.640, 0.330, 0.300, 0.600, 0.150, 0.060 },
     290             :     [AVCOL_PRI_BT470M]    = { WP_C,   0.670, 0.330, 0.210, 0.710, 0.140, 0.080 },
     291             :     [AVCOL_PRI_BT470BG]   = { WP_D65, 0.640, 0.330, 0.290, 0.600, 0.150, 0.060,},
     292             :     [AVCOL_PRI_SMPTE170M] = { WP_D65, 0.630, 0.340, 0.310, 0.595, 0.155, 0.070 },
     293             :     [AVCOL_PRI_SMPTE240M] = { WP_D65, 0.630, 0.340, 0.310, 0.595, 0.155, 0.070 },
     294             :     [AVCOL_PRI_SMPTE428]  = { WP_E,   0.735, 0.265, 0.274, 0.718, 0.167, 0.009 },
     295             :     [AVCOL_PRI_SMPTE431]  = { WP_DCI, 0.680, 0.320, 0.265, 0.690, 0.150, 0.060 },
     296             :     [AVCOL_PRI_SMPTE432]  = { WP_D65, 0.680, 0.320, 0.265, 0.690, 0.150, 0.060 },
     297             :     [AVCOL_PRI_FILM]      = { WP_C,   0.681, 0.319, 0.243, 0.692, 0.145, 0.049 },
     298             :     [AVCOL_PRI_BT2020]    = { WP_D65, 0.708, 0.292, 0.170, 0.797, 0.131, 0.046 },
     299             :     [AVCOL_PRI_JEDEC_P22] = { WP_D65, 0.630, 0.340, 0.295, 0.605, 0.155, 0.077 },
     300             : };
     301             : 
     302           0 : static const struct ColorPrimaries *get_color_primaries(enum AVColorPrimaries prm)
     303             : {
     304             :     const struct ColorPrimaries *coeffs;
     305             : 
     306           0 :     if (prm >= AVCOL_PRI_NB)
     307           0 :         return NULL;
     308           0 :     coeffs = &color_primaries[prm];
     309           0 :     if (!coeffs->xr)
     310           0 :         return NULL;
     311             : 
     312           0 :     return coeffs;
     313             : }
     314             : 
     315           0 : static void invert_matrix3x3(const double in[3][3], double out[3][3])
     316             : {
     317           0 :     double m00 = in[0][0], m01 = in[0][1], m02 = in[0][2],
     318           0 :            m10 = in[1][0], m11 = in[1][1], m12 = in[1][2],
     319           0 :            m20 = in[2][0], m21 = in[2][1], m22 = in[2][2];
     320             :     int i, j;
     321             :     double det;
     322             : 
     323           0 :     out[0][0] =  (m11 * m22 - m21 * m12);
     324           0 :     out[0][1] = -(m01 * m22 - m21 * m02);
     325           0 :     out[0][2] =  (m01 * m12 - m11 * m02);
     326           0 :     out[1][0] = -(m10 * m22 - m20 * m12);
     327           0 :     out[1][1] =  (m00 * m22 - m20 * m02);
     328           0 :     out[1][2] = -(m00 * m12 - m10 * m02);
     329           0 :     out[2][0] =  (m10 * m21 - m20 * m11);
     330           0 :     out[2][1] = -(m00 * m21 - m20 * m01);
     331           0 :     out[2][2] =  (m00 * m11 - m10 * m01);
     332             : 
     333           0 :     det = m00 * out[0][0] + m10 * out[0][1] + m20 * out[0][2];
     334           0 :     det = 1.0 / det;
     335             : 
     336           0 :     for (i = 0; i < 3; i++) {
     337           0 :         for (j = 0; j < 3; j++)
     338           0 :             out[i][j] *= det;
     339             :     }
     340           0 : }
     341             : 
     342           0 : static int fill_gamma_table(ColorSpaceContext *s)
     343             : {
     344             :     int n;
     345           0 :     double in_alpha = s->in_txchr->alpha, in_beta = s->in_txchr->beta;
     346           0 :     double in_gamma = s->in_txchr->gamma, in_delta = s->in_txchr->delta;
     347           0 :     double in_ialpha = 1.0 / in_alpha, in_igamma = 1.0 / in_gamma, in_idelta = 1.0 / in_delta;
     348           0 :     double out_alpha = s->out_txchr->alpha, out_beta = s->out_txchr->beta;
     349           0 :     double out_gamma = s->out_txchr->gamma, out_delta = s->out_txchr->delta;
     350             : 
     351           0 :     s->lin_lut = av_malloc(sizeof(*s->lin_lut) * 32768 * 2);
     352           0 :     if (!s->lin_lut)
     353           0 :         return AVERROR(ENOMEM);
     354           0 :     s->delin_lut = &s->lin_lut[32768];
     355           0 :     for (n = 0; n < 32768; n++) {
     356           0 :         double v = (n - 2048.0) / 28672.0, d, l;
     357             : 
     358             :         // delinearize
     359           0 :         if (v <= -out_beta) {
     360           0 :             d = -out_alpha * pow(-v, out_gamma) + (out_alpha - 1.0);
     361           0 :         } else if (v < out_beta) {
     362           0 :             d = out_delta * v;
     363             :         } else {
     364           0 :             d = out_alpha * pow(v, out_gamma) - (out_alpha - 1.0);
     365             :         }
     366           0 :         s->delin_lut[n] = av_clip_int16(lrint(d * 28672.0));
     367             : 
     368             :         // linearize
     369           0 :         if (v <= -in_beta) {
     370           0 :             l = -pow((1.0 - in_alpha - v) * in_ialpha, in_igamma);
     371           0 :         } else if (v < in_beta) {
     372           0 :             l = v * in_idelta;
     373             :         } else {
     374           0 :             l = pow((v + in_alpha - 1.0) * in_ialpha, in_igamma);
     375             :         }
     376           0 :         s->lin_lut[n] = av_clip_int16(lrint(l * 28672.0));
     377             :     }
     378             : 
     379           0 :     return 0;
     380             : }
     381             : 
     382             : /*
     383             :  * see e.g. http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
     384             :  */
     385           0 : static void fill_rgb2xyz_table(const struct ColorPrimaries *coeffs,
     386             :                                double rgb2xyz[3][3])
     387             : {
     388           0 :     const struct WhitepointCoefficients *wp = &whitepoint_coefficients[coeffs->wp];
     389             :     double i[3][3], sr, sg, sb, zw;
     390             : 
     391           0 :     rgb2xyz[0][0] = coeffs->xr / coeffs->yr;
     392           0 :     rgb2xyz[0][1] = coeffs->xg / coeffs->yg;
     393           0 :     rgb2xyz[0][2] = coeffs->xb / coeffs->yb;
     394           0 :     rgb2xyz[1][0] = rgb2xyz[1][1] = rgb2xyz[1][2] = 1.0;
     395           0 :     rgb2xyz[2][0] = (1.0 - coeffs->xr - coeffs->yr) / coeffs->yr;
     396           0 :     rgb2xyz[2][1] = (1.0 - coeffs->xg - coeffs->yg) / coeffs->yg;
     397           0 :     rgb2xyz[2][2] = (1.0 - coeffs->xb - coeffs->yb) / coeffs->yb;
     398           0 :     invert_matrix3x3(rgb2xyz, i);
     399           0 :     zw = 1.0 - wp->xw - wp->yw;
     400           0 :     sr = i[0][0] * wp->xw + i[0][1] * wp->yw + i[0][2] * zw;
     401           0 :     sg = i[1][0] * wp->xw + i[1][1] * wp->yw + i[1][2] * zw;
     402           0 :     sb = i[2][0] * wp->xw + i[2][1] * wp->yw + i[2][2] * zw;
     403           0 :     rgb2xyz[0][0] *= sr;
     404           0 :     rgb2xyz[0][1] *= sg;
     405           0 :     rgb2xyz[0][2] *= sb;
     406           0 :     rgb2xyz[1][0] *= sr;
     407           0 :     rgb2xyz[1][1] *= sg;
     408           0 :     rgb2xyz[1][2] *= sb;
     409           0 :     rgb2xyz[2][0] *= sr;
     410           0 :     rgb2xyz[2][1] *= sg;
     411           0 :     rgb2xyz[2][2] *= sb;
     412           0 : }
     413             : 
     414           0 : static void mul3x3(double dst[3][3], const double src1[3][3], const double src2[3][3])
     415             : {
     416             :     int m, n;
     417             : 
     418           0 :     for (m = 0; m < 3; m++)
     419           0 :         for (n = 0; n < 3; n++)
     420           0 :             dst[m][n] = src2[m][0] * src1[0][n] +
     421           0 :                         src2[m][1] * src1[1][n] +
     422           0 :                         src2[m][2] * src1[2][n];
     423           0 : }
     424             : 
     425             : /*
     426             :  * See http://www.brucelindbloom.com/index.html?Eqn_ChromAdapt.html
     427             :  * This function uses the Bradford mechanism.
     428             :  */
     429           0 : static void fill_whitepoint_conv_table(double out[3][3], enum WhitepointAdaptation wp_adapt,
     430             :                                        enum Whitepoint src, enum Whitepoint dst)
     431             : {
     432             :     static const double ma_tbl[NB_WP_ADAPT_NON_IDENTITY][3][3] = {
     433             :         [WP_ADAPT_BRADFORD] = {
     434             :             {  0.8951,  0.2664, -0.1614 },
     435             :             { -0.7502,  1.7135,  0.0367 },
     436             :             {  0.0389, -0.0685,  1.0296 },
     437             :         }, [WP_ADAPT_VON_KRIES] = {
     438             :             {  0.40024,  0.70760, -0.08081 },
     439             :             { -0.22630,  1.16532,  0.04570 },
     440             :             {  0.00000,  0.00000,  0.91822 },
     441             :         },
     442             :     };
     443           0 :     const double (*ma)[3] = ma_tbl[wp_adapt];
     444           0 :     const struct WhitepointCoefficients *wp_src = &whitepoint_coefficients[src];
     445           0 :     double zw_src = 1.0 - wp_src->xw - wp_src->yw;
     446           0 :     const struct WhitepointCoefficients *wp_dst = &whitepoint_coefficients[dst];
     447           0 :     double zw_dst = 1.0 - wp_dst->xw - wp_dst->yw;
     448             :     double mai[3][3], fac[3][3], tmp[3][3];
     449             :     double rs, gs, bs, rd, gd, bd;
     450             : 
     451           0 :     invert_matrix3x3(ma, mai);
     452           0 :     rs = ma[0][0] * wp_src->xw + ma[0][1] * wp_src->yw + ma[0][2] * zw_src;
     453           0 :     gs = ma[1][0] * wp_src->xw + ma[1][1] * wp_src->yw + ma[1][2] * zw_src;
     454           0 :     bs = ma[2][0] * wp_src->xw + ma[2][1] * wp_src->yw + ma[2][2] * zw_src;
     455           0 :     rd = ma[0][0] * wp_dst->xw + ma[0][1] * wp_dst->yw + ma[0][2] * zw_dst;
     456           0 :     gd = ma[1][0] * wp_dst->xw + ma[1][1] * wp_dst->yw + ma[1][2] * zw_dst;
     457           0 :     bd = ma[2][0] * wp_dst->xw + ma[2][1] * wp_dst->yw + ma[2][2] * zw_dst;
     458           0 :     fac[0][0] = rd / rs;
     459           0 :     fac[1][1] = gd / gs;
     460           0 :     fac[2][2] = bd / bs;
     461           0 :     fac[0][1] = fac[0][2] = fac[1][0] = fac[1][2] = fac[2][0] = fac[2][1] = 0.0;
     462           0 :     mul3x3(tmp, ma, fac);
     463           0 :     mul3x3(out, tmp, mai);
     464           0 : }
     465             : 
     466           0 : static void apply_lut(int16_t *buf[3], ptrdiff_t stride,
     467             :                       int w, int h, const int16_t *lut)
     468             : {
     469             :     int y, x, n;
     470             : 
     471           0 :     for (n = 0; n < 3; n++) {
     472           0 :         int16_t *data = buf[n];
     473             : 
     474           0 :         for (y = 0; y < h; y++) {
     475           0 :             for (x = 0; x < w; x++)
     476           0 :                 data[x] = lut[av_clip_uintp2(2048 + data[x], 15)];
     477             : 
     478           0 :             data += stride;
     479             :         }
     480             :     }
     481           0 : }
     482             : 
     483             : struct ThreadData {
     484             :     AVFrame *in, *out;
     485             :     ptrdiff_t in_linesize[3], out_linesize[3];
     486             :     int in_ss_h, out_ss_h;
     487             : };
     488             : 
     489           0 : static int convert(AVFilterContext *ctx, void *data, int job_nr, int n_jobs)
     490             : {
     491           0 :     struct ThreadData *td = data;
     492           0 :     ColorSpaceContext *s = ctx->priv;
     493             :     uint8_t *in_data[3], *out_data[3];
     494             :     int16_t *rgb[3];
     495           0 :     int h_in = (td->in->height + 1) >> 1;
     496           0 :     int h1 = 2 * (job_nr * h_in / n_jobs), h2 = 2 * ((job_nr + 1) * h_in / n_jobs);
     497           0 :     int w = td->in->width, h = h2 - h1;
     498             : 
     499           0 :     in_data[0]  = td->in->data[0]  + td->in_linesize[0]  *  h1;
     500           0 :     in_data[1]  = td->in->data[1]  + td->in_linesize[1]  * (h1 >> td->in_ss_h);
     501           0 :     in_data[2]  = td->in->data[2]  + td->in_linesize[2]  * (h1 >> td->in_ss_h);
     502           0 :     out_data[0] = td->out->data[0] + td->out_linesize[0] *  h1;
     503           0 :     out_data[1] = td->out->data[1] + td->out_linesize[1] * (h1 >> td->out_ss_h);
     504           0 :     out_data[2] = td->out->data[2] + td->out_linesize[2] * (h1 >> td->out_ss_h);
     505           0 :     rgb[0]      = s->rgb[0]        + s->rgb_stride       *  h1;
     506           0 :     rgb[1]      = s->rgb[1]        + s->rgb_stride       *  h1;
     507           0 :     rgb[2]      = s->rgb[2]        + s->rgb_stride       *  h1;
     508             : 
     509             :     // FIXME for simd, also make sure we do pictures with negative stride
     510             :     // top-down so we don't overwrite lines with padding of data before it
     511             :     // in the same buffer (same as swscale)
     512             : 
     513           0 :     if (s->yuv2yuv_fastmode) {
     514             :         // FIXME possibly use a fast mode in case only the y range changes?
     515             :         // since in that case, only the diagonal entries in yuv2yuv_coeffs[]
     516             :         // are non-zero
     517           0 :         s->yuv2yuv(out_data, td->out_linesize, in_data, td->in_linesize, w, h,
     518           0 :                    s->yuv2yuv_coeffs, s->yuv_offset);
     519             :     } else {
     520             :         // FIXME maybe (for caching effciency) do pipeline per-line instead of
     521             :         // full buffer per function? (Or, since yuv2rgb requires 2 lines: per
     522             :         // 2 lines, for yuv420.)
     523             :         /*
     524             :          * General design:
     525             :          * - yuv2rgb converts from whatever range the input was ([16-235/240] or
     526             :          *   [0,255] or the 10/12bpp equivalents thereof) to an integer version
     527             :          *   of RGB in psuedo-restricted 15+sign bits. That means that the float
     528             :          *   range [0.0,1.0] is in [0,28762], and the remainder of the int16_t
     529             :          *   range is used for overflow/underflow outside the representable
     530             :          *   range of this RGB type. rgb2yuv is the exact opposite.
     531             :          * - gamma correction is done using a LUT since that appears to work
     532             :          *   fairly fast.
     533             :          * - If the input is chroma-subsampled (420/422), the yuv2rgb conversion
     534             :          *   (or rgb2yuv conversion) uses nearest-neighbour sampling to read
     535             :          *   read chroma pixels at luma resolution. If you want some more fancy
     536             :          *   filter, you can use swscale to convert to yuv444p.
     537             :          * - all coefficients are 14bit (so in the [-2.0,2.0] range).
     538             :          */
     539           0 :         s->yuv2rgb(rgb, s->rgb_stride, in_data, td->in_linesize, w, h,
     540           0 :                    s->yuv2rgb_coeffs, s->yuv_offset[0]);
     541           0 :         if (!s->rgb2rgb_passthrough) {
     542           0 :             apply_lut(rgb, s->rgb_stride, w, h, s->lin_lut);
     543           0 :             if (!s->lrgb2lrgb_passthrough)
     544           0 :                 s->dsp.multiply3x3(rgb, s->rgb_stride, w, h, s->lrgb2lrgb_coeffs);
     545           0 :             apply_lut(rgb, s->rgb_stride, w, h, s->delin_lut);
     546             :         }
     547           0 :         if (s->dither == DITHER_FSB) {
     548           0 :             s->rgb2yuv_fsb(out_data, td->out_linesize, rgb, s->rgb_stride, w, h,
     549           0 :                            s->rgb2yuv_coeffs, s->yuv_offset[1], s->dither_scratch);
     550             :         } else {
     551           0 :             s->rgb2yuv(out_data, td->out_linesize, rgb, s->rgb_stride, w, h,
     552           0 :                        s->rgb2yuv_coeffs, s->yuv_offset[1]);
     553             :         }
     554             :     }
     555             : 
     556           0 :     return 0;
     557             : }
     558             : 
     559           0 : static int get_range_off(AVFilterContext *ctx, int *off,
     560             :                          int *y_rng, int *uv_rng,
     561             :                          enum AVColorRange rng, int depth)
     562             : {
     563           0 :     switch (rng) {
     564           0 :     case AVCOL_RANGE_UNSPECIFIED: {
     565           0 :         ColorSpaceContext *s = ctx->priv;
     566             : 
     567           0 :         if (!s->did_warn_range) {
     568           0 :             av_log(ctx, AV_LOG_WARNING, "Input range not set, assuming tv/mpeg\n");
     569           0 :             s->did_warn_range = 1;
     570             :         }
     571             :     }
     572             :         // fall-through
     573             :     case AVCOL_RANGE_MPEG:
     574           0 :         *off = 16 << (depth - 8);
     575           0 :         *y_rng = 219 << (depth - 8);
     576           0 :         *uv_rng = 224 << (depth - 8);
     577           0 :         break;
     578           0 :     case AVCOL_RANGE_JPEG:
     579           0 :         *off = 0;
     580           0 :         *y_rng = *uv_rng = (256 << (depth - 8)) - 1;
     581           0 :         break;
     582           0 :     default:
     583           0 :         return AVERROR(EINVAL);
     584             :     }
     585             : 
     586           0 :     return 0;
     587             : }
     588             : 
     589           0 : static int create_filtergraph(AVFilterContext *ctx,
     590             :                               const AVFrame *in, const AVFrame *out)
     591             : {
     592           0 :     ColorSpaceContext *s = ctx->priv;
     593           0 :     const AVPixFmtDescriptor *in_desc  = av_pix_fmt_desc_get(in->format);
     594           0 :     const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(out->format);
     595           0 :     int emms = 0, m, n, o, res, fmt_identical, redo_yuv2rgb = 0, redo_rgb2yuv = 0;
     596             : 
     597             : #define supported_depth(d) ((d) == 8 || (d) == 10 || (d) == 12)
     598             : #define supported_subsampling(lcw, lch) \
     599             :     (((lcw) == 0 && (lch) == 0) || ((lcw) == 1 && (lch) == 0) || ((lcw) == 1 && (lch) == 1))
     600             : #define supported_format(d) \
     601             :     ((d) != NULL && (d)->nb_components == 3 && \
     602             :      !((d)->flags & AV_PIX_FMT_FLAG_RGB) && \
     603             :      supported_depth((d)->comp[0].depth) && \
     604             :      supported_subsampling((d)->log2_chroma_w, (d)->log2_chroma_h))
     605             : 
     606           0 :     if (!supported_format(in_desc)) {
     607           0 :         av_log(ctx, AV_LOG_ERROR,
     608             :                "Unsupported input format %d (%s) or bitdepth (%d)\n",
     609           0 :                in->format, av_get_pix_fmt_name(in->format),
     610             :                in_desc ? in_desc->comp[0].depth : -1);
     611           0 :         return AVERROR(EINVAL);
     612             :     }
     613           0 :     if (!supported_format(out_desc)) {
     614           0 :         av_log(ctx, AV_LOG_ERROR,
     615             :                "Unsupported output format %d (%s) or bitdepth (%d)\n",
     616           0 :                out->format, av_get_pix_fmt_name(out->format),
     617             :                out_desc ? out_desc->comp[0].depth : -1);
     618           0 :         return AVERROR(EINVAL);
     619             :     }
     620             : 
     621           0 :     if (in->color_primaries  != s->in_prm)  s->in_primaries  = NULL;
     622           0 :     if (out->color_primaries != s->out_prm) s->out_primaries = NULL;
     623           0 :     if (in->color_trc        != s->in_trc)  s->in_txchr      = NULL;
     624           0 :     if (out->color_trc       != s->out_trc) s->out_txchr     = NULL;
     625           0 :     if (in->colorspace       != s->in_csp ||
     626           0 :         in->color_range      != s->in_rng)  s->in_lumacoef   = NULL;
     627           0 :     if (out->colorspace      != s->out_csp ||
     628           0 :         out->color_range     != s->out_rng) s->out_lumacoef  = NULL;
     629             : 
     630           0 :     if (!s->out_primaries || !s->in_primaries) {
     631           0 :         s->in_prm = in->color_primaries;
     632           0 :         if (s->user_iall != CS_UNSPECIFIED)
     633           0 :             s->in_prm = default_prm[FFMIN(s->user_iall, CS_NB)];
     634           0 :         if (s->user_iprm != AVCOL_PRI_UNSPECIFIED)
     635           0 :             s->in_prm = s->user_iprm;
     636           0 :         s->in_primaries = get_color_primaries(s->in_prm);
     637           0 :         if (!s->in_primaries) {
     638           0 :             av_log(ctx, AV_LOG_ERROR,
     639             :                    "Unsupported input primaries %d (%s)\n",
     640           0 :                    s->in_prm, av_color_primaries_name(s->in_prm));
     641           0 :             return AVERROR(EINVAL);
     642             :         }
     643           0 :         s->out_prm = out->color_primaries;
     644           0 :         s->out_primaries = get_color_primaries(s->out_prm);
     645           0 :         if (!s->out_primaries) {
     646           0 :             if (s->out_prm == AVCOL_PRI_UNSPECIFIED) {
     647           0 :                 if (s->user_all == CS_UNSPECIFIED) {
     648           0 :                     av_log(ctx, AV_LOG_ERROR, "Please specify output primaries\n");
     649             :                 } else {
     650           0 :                     av_log(ctx, AV_LOG_ERROR,
     651           0 :                            "Unsupported output color property %d\n", s->user_all);
     652             :                 }
     653             :             } else {
     654           0 :                 av_log(ctx, AV_LOG_ERROR,
     655             :                        "Unsupported output primaries %d (%s)\n",
     656           0 :                        s->out_prm, av_color_primaries_name(s->out_prm));
     657             :             }
     658           0 :             return AVERROR(EINVAL);
     659             :         }
     660           0 :         s->lrgb2lrgb_passthrough = !memcmp(s->in_primaries, s->out_primaries,
     661             :                                            sizeof(*s->in_primaries));
     662           0 :         if (!s->lrgb2lrgb_passthrough) {
     663             :             double rgb2xyz[3][3], xyz2rgb[3][3], rgb2rgb[3][3];
     664             : 
     665           0 :             fill_rgb2xyz_table(s->out_primaries, rgb2xyz);
     666           0 :             invert_matrix3x3(rgb2xyz, xyz2rgb);
     667           0 :             fill_rgb2xyz_table(s->in_primaries, rgb2xyz);
     668           0 :             if (s->out_primaries->wp != s->in_primaries->wp &&
     669           0 :                 s->wp_adapt != WP_ADAPT_IDENTITY) {
     670             :                 double wpconv[3][3], tmp[3][3];
     671             : 
     672           0 :                 fill_whitepoint_conv_table(wpconv, s->wp_adapt, s->in_primaries->wp,
     673           0 :                                            s->out_primaries->wp);
     674           0 :                 mul3x3(tmp, rgb2xyz, wpconv);
     675           0 :                 mul3x3(rgb2rgb, tmp, xyz2rgb);
     676             :             } else {
     677           0 :                 mul3x3(rgb2rgb, rgb2xyz, xyz2rgb);
     678             :             }
     679           0 :             for (m = 0; m < 3; m++)
     680           0 :                 for (n = 0; n < 3; n++) {
     681           0 :                     s->lrgb2lrgb_coeffs[m][n][0] = lrint(16384.0 * rgb2rgb[m][n]);
     682           0 :                     for (o = 1; o < 8; o++)
     683           0 :                         s->lrgb2lrgb_coeffs[m][n][o] = s->lrgb2lrgb_coeffs[m][n][0];
     684             :                 }
     685             : 
     686           0 :             emms = 1;
     687             :         }
     688             :     }
     689             : 
     690           0 :     if (!s->in_txchr) {
     691           0 :         av_freep(&s->lin_lut);
     692           0 :         s->in_trc = in->color_trc;
     693           0 :         if (s->user_iall != CS_UNSPECIFIED)
     694           0 :             s->in_trc = default_trc[FFMIN(s->user_iall, CS_NB)];
     695           0 :         if (s->user_itrc != AVCOL_TRC_UNSPECIFIED)
     696           0 :             s->in_trc = s->user_itrc;
     697           0 :         s->in_txchr = get_transfer_characteristics(s->in_trc);
     698           0 :         if (!s->in_txchr) {
     699           0 :             av_log(ctx, AV_LOG_ERROR,
     700             :                    "Unsupported input transfer characteristics %d (%s)\n",
     701           0 :                    s->in_trc, av_color_transfer_name(s->in_trc));
     702           0 :             return AVERROR(EINVAL);
     703             :         }
     704             :     }
     705             : 
     706           0 :     if (!s->out_txchr) {
     707           0 :         av_freep(&s->lin_lut);
     708           0 :         s->out_trc = out->color_trc;
     709           0 :         s->out_txchr = get_transfer_characteristics(s->out_trc);
     710           0 :         if (!s->out_txchr) {
     711           0 :             if (s->out_trc == AVCOL_TRC_UNSPECIFIED) {
     712           0 :                 if (s->user_all == CS_UNSPECIFIED) {
     713           0 :                     av_log(ctx, AV_LOG_ERROR,
     714             :                            "Please specify output transfer characteristics\n");
     715             :                 } else {
     716           0 :                     av_log(ctx, AV_LOG_ERROR,
     717           0 :                            "Unsupported output color property %d\n", s->user_all);
     718             :                 }
     719             :             } else {
     720           0 :                 av_log(ctx, AV_LOG_ERROR,
     721             :                        "Unsupported output transfer characteristics %d (%s)\n",
     722           0 :                        s->out_trc, av_color_transfer_name(s->out_trc));
     723             :             }
     724           0 :             return AVERROR(EINVAL);
     725             :         }
     726             :     }
     727             : 
     728           0 :     s->rgb2rgb_passthrough = s->fast_mode || (s->lrgb2lrgb_passthrough &&
     729           0 :                              !memcmp(s->in_txchr, s->out_txchr, sizeof(*s->in_txchr)));
     730           0 :     if (!s->rgb2rgb_passthrough && !s->lin_lut) {
     731           0 :         res = fill_gamma_table(s);
     732           0 :         if (res < 0)
     733           0 :             return res;
     734           0 :         emms = 1;
     735             :     }
     736             : 
     737           0 :     if (!s->in_lumacoef) {
     738           0 :         s->in_csp = in->colorspace;
     739           0 :         if (s->user_iall != CS_UNSPECIFIED)
     740           0 :             s->in_csp = default_csp[FFMIN(s->user_iall, CS_NB)];
     741           0 :         if (s->user_icsp != AVCOL_SPC_UNSPECIFIED)
     742           0 :             s->in_csp = s->user_icsp;
     743           0 :         s->in_rng = in->color_range;
     744           0 :         if (s->user_irng != AVCOL_RANGE_UNSPECIFIED)
     745           0 :             s->in_rng = s->user_irng;
     746           0 :         s->in_lumacoef = get_luma_coefficients(s->in_csp);
     747           0 :         if (!s->in_lumacoef) {
     748           0 :             av_log(ctx, AV_LOG_ERROR,
     749             :                    "Unsupported input colorspace %d (%s)\n",
     750           0 :                    s->in_csp, av_color_space_name(s->in_csp));
     751           0 :             return AVERROR(EINVAL);
     752             :         }
     753           0 :         redo_yuv2rgb = 1;
     754             :     }
     755             : 
     756           0 :     if (!s->out_lumacoef) {
     757           0 :         s->out_csp = out->colorspace;
     758           0 :         s->out_rng = out->color_range;
     759           0 :         s->out_lumacoef = get_luma_coefficients(s->out_csp);
     760           0 :         if (!s->out_lumacoef) {
     761           0 :             if (s->out_csp == AVCOL_SPC_UNSPECIFIED) {
     762           0 :                 if (s->user_all == CS_UNSPECIFIED) {
     763           0 :                     av_log(ctx, AV_LOG_ERROR,
     764             :                            "Please specify output transfer characteristics\n");
     765             :                 } else {
     766           0 :                     av_log(ctx, AV_LOG_ERROR,
     767           0 :                            "Unsupported output color property %d\n", s->user_all);
     768             :                 }
     769             :             } else {
     770           0 :                 av_log(ctx, AV_LOG_ERROR,
     771             :                        "Unsupported output transfer characteristics %d (%s)\n",
     772           0 :                        s->out_csp, av_color_space_name(s->out_csp));
     773             :             }
     774           0 :             return AVERROR(EINVAL);
     775             :         }
     776           0 :         redo_rgb2yuv = 1;
     777             :     }
     778             : 
     779           0 :     fmt_identical = in_desc->log2_chroma_h == out_desc->log2_chroma_h &&
     780           0 :                     in_desc->log2_chroma_w == out_desc->log2_chroma_w;
     781           0 :     s->yuv2yuv_fastmode = s->rgb2rgb_passthrough && fmt_identical;
     782           0 :     s->yuv2yuv_passthrough = s->yuv2yuv_fastmode && s->in_rng == s->out_rng &&
     783           0 :                              !memcmp(s->in_lumacoef, s->out_lumacoef,
     784           0 :                                      sizeof(*s->in_lumacoef)) &&
     785           0 :                              in_desc->comp[0].depth == out_desc->comp[0].depth;
     786           0 :     if (!s->yuv2yuv_passthrough) {
     787           0 :         if (redo_yuv2rgb) {
     788           0 :             double rgb2yuv[3][3], (*yuv2rgb)[3] = s->yuv2rgb_dbl_coeffs;
     789             :             int off, bits, in_rng;
     790             : 
     791           0 :             res = get_range_off(ctx, &off, &s->in_y_rng, &s->in_uv_rng,
     792             :                                 s->in_rng, in_desc->comp[0].depth);
     793           0 :             if (res < 0) {
     794           0 :                 av_log(ctx, AV_LOG_ERROR,
     795             :                        "Unsupported input color range %d (%s)\n",
     796           0 :                        s->in_rng, av_color_range_name(s->in_rng));
     797           0 :                 return res;
     798             :             }
     799           0 :             for (n = 0; n < 8; n++)
     800           0 :                 s->yuv_offset[0][n] = off;
     801           0 :             fill_rgb2yuv_table(s->in_lumacoef, rgb2yuv);
     802           0 :             invert_matrix3x3(rgb2yuv, yuv2rgb);
     803           0 :             bits = 1 << (in_desc->comp[0].depth - 1);
     804           0 :             for (n = 0; n < 3; n++) {
     805           0 :                 for (in_rng = s->in_y_rng, m = 0; m < 3; m++, in_rng = s->in_uv_rng) {
     806           0 :                     s->yuv2rgb_coeffs[n][m][0] = lrint(28672 * bits * yuv2rgb[n][m] / in_rng);
     807           0 :                     for (o = 1; o < 8; o++)
     808           0 :                         s->yuv2rgb_coeffs[n][m][o] = s->yuv2rgb_coeffs[n][m][0];
     809             :                 }
     810             :             }
     811             :             av_assert2(s->yuv2rgb_coeffs[0][1][0] == 0);
     812             :             av_assert2(s->yuv2rgb_coeffs[2][2][0] == 0);
     813             :             av_assert2(s->yuv2rgb_coeffs[0][0][0] == s->yuv2rgb_coeffs[1][0][0]);
     814             :             av_assert2(s->yuv2rgb_coeffs[0][0][0] == s->yuv2rgb_coeffs[2][0][0]);
     815           0 :             s->yuv2rgb = s->dsp.yuv2rgb[(in_desc->comp[0].depth - 8) >> 1]
     816           0 :                                        [in_desc->log2_chroma_h + in_desc->log2_chroma_w];
     817           0 :             emms = 1;
     818             :         }
     819             : 
     820           0 :         if (redo_rgb2yuv) {
     821           0 :             double (*rgb2yuv)[3] = s->rgb2yuv_dbl_coeffs;
     822             :             int off, out_rng, bits;
     823             : 
     824           0 :             res = get_range_off(ctx, &off, &s->out_y_rng, &s->out_uv_rng,
     825             :                                 s->out_rng, out_desc->comp[0].depth);
     826           0 :             if (res < 0) {
     827           0 :                 av_log(ctx, AV_LOG_ERROR,
     828             :                        "Unsupported output color range %d (%s)\n",
     829           0 :                        s->out_rng, av_color_range_name(s->out_rng));
     830           0 :                 return res;
     831             :             }
     832           0 :             for (n = 0; n < 8; n++)
     833           0 :                 s->yuv_offset[1][n] = off;
     834           0 :             fill_rgb2yuv_table(s->out_lumacoef, rgb2yuv);
     835           0 :             bits = 1 << (29 - out_desc->comp[0].depth);
     836           0 :             for (out_rng = s->out_y_rng, n = 0; n < 3; n++, out_rng = s->out_uv_rng) {
     837           0 :                 for (m = 0; m < 3; m++) {
     838           0 :                     s->rgb2yuv_coeffs[n][m][0] = lrint(bits * out_rng * rgb2yuv[n][m] / 28672);
     839           0 :                     for (o = 1; o < 8; o++)
     840           0 :                         s->rgb2yuv_coeffs[n][m][o] = s->rgb2yuv_coeffs[n][m][0];
     841             :                 }
     842             :             }
     843             :             av_assert2(s->rgb2yuv_coeffs[1][2][0] == s->rgb2yuv_coeffs[2][0][0]);
     844           0 :             s->rgb2yuv = s->dsp.rgb2yuv[(out_desc->comp[0].depth - 8) >> 1]
     845           0 :                                        [out_desc->log2_chroma_h + out_desc->log2_chroma_w];
     846           0 :             s->rgb2yuv_fsb = s->dsp.rgb2yuv_fsb[(out_desc->comp[0].depth - 8) >> 1]
     847           0 :                                        [out_desc->log2_chroma_h + out_desc->log2_chroma_w];
     848           0 :             emms = 1;
     849             :         }
     850             : 
     851           0 :         if (s->yuv2yuv_fastmode && (redo_yuv2rgb || redo_rgb2yuv)) {
     852           0 :             int idepth = in_desc->comp[0].depth, odepth = out_desc->comp[0].depth;
     853           0 :             double (*rgb2yuv)[3] = s->rgb2yuv_dbl_coeffs;
     854           0 :             double (*yuv2rgb)[3] = s->yuv2rgb_dbl_coeffs;
     855             :             double yuv2yuv[3][3];
     856             :             int in_rng, out_rng;
     857             : 
     858           0 :             mul3x3(yuv2yuv, yuv2rgb, rgb2yuv);
     859           0 :             for (out_rng = s->out_y_rng, m = 0; m < 3; m++, out_rng = s->out_uv_rng) {
     860           0 :                 for (in_rng = s->in_y_rng, n = 0; n < 3; n++, in_rng = s->in_uv_rng) {
     861           0 :                     s->yuv2yuv_coeffs[m][n][0] =
     862           0 :                         lrint(16384 * yuv2yuv[m][n] * out_rng * (1 << idepth) /
     863           0 :                               (in_rng * (1 << odepth)));
     864           0 :                     for (o = 1; o < 8; o++)
     865           0 :                         s->yuv2yuv_coeffs[m][n][o] = s->yuv2yuv_coeffs[m][n][0];
     866             :                 }
     867             :             }
     868             :             av_assert2(s->yuv2yuv_coeffs[1][0][0] == 0);
     869             :             av_assert2(s->yuv2yuv_coeffs[2][0][0] == 0);
     870           0 :             s->yuv2yuv = s->dsp.yuv2yuv[(idepth - 8) >> 1][(odepth - 8) >> 1]
     871           0 :                                        [in_desc->log2_chroma_h + in_desc->log2_chroma_w];
     872             :         }
     873             :     }
     874             : 
     875           0 :     if (emms)
     876           0 :         emms_c();
     877             : 
     878           0 :     return 0;
     879             : }
     880             : 
     881           0 : static int init(AVFilterContext *ctx)
     882             : {
     883           0 :     ColorSpaceContext *s = ctx->priv;
     884             : 
     885           0 :     ff_colorspacedsp_init(&s->dsp);
     886             : 
     887           0 :     return 0;
     888             : }
     889             : 
     890           0 : static void uninit(AVFilterContext *ctx)
     891             : {
     892           0 :     ColorSpaceContext *s = ctx->priv;
     893             : 
     894           0 :     av_freep(&s->rgb[0]);
     895           0 :     av_freep(&s->rgb[1]);
     896           0 :     av_freep(&s->rgb[2]);
     897           0 :     s->rgb_sz = 0;
     898           0 :     av_freep(&s->dither_scratch_base[0][0]);
     899           0 :     av_freep(&s->dither_scratch_base[0][1]);
     900           0 :     av_freep(&s->dither_scratch_base[1][0]);
     901           0 :     av_freep(&s->dither_scratch_base[1][1]);
     902           0 :     av_freep(&s->dither_scratch_base[2][0]);
     903           0 :     av_freep(&s->dither_scratch_base[2][1]);
     904             : 
     905           0 :     av_freep(&s->lin_lut);
     906           0 : }
     907             : 
     908           0 : static int filter_frame(AVFilterLink *link, AVFrame *in)
     909             : {
     910           0 :     AVFilterContext *ctx = link->dst;
     911           0 :     AVFilterLink *outlink = ctx->outputs[0];
     912           0 :     ColorSpaceContext *s = ctx->priv;
     913             :     // FIXME if yuv2yuv_passthrough, don't get a new buffer but use the
     914             :     // input one if it is writable *OR* the actual literal values of in_*
     915             :     // and out_* are identical (not just their respective properties)
     916           0 :     AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     917             :     int res;
     918           0 :     ptrdiff_t rgb_stride = FFALIGN(in->width * sizeof(int16_t), 32);
     919           0 :     unsigned rgb_sz = rgb_stride * in->height;
     920             :     struct ThreadData td;
     921             : 
     922           0 :     if (!out) {
     923           0 :         av_frame_free(&in);
     924           0 :         return AVERROR(ENOMEM);
     925             :     }
     926           0 :     res = av_frame_copy_props(out, in);
     927           0 :     if (res < 0) {
     928           0 :         av_frame_free(&in);
     929           0 :         return res;
     930             :     }
     931             : 
     932           0 :     out->color_primaries = s->user_prm == AVCOL_PRI_UNSPECIFIED ?
     933           0 :                            default_prm[FFMIN(s->user_all, CS_NB)] : s->user_prm;
     934           0 :     if (s->user_trc == AVCOL_TRC_UNSPECIFIED) {
     935           0 :         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(out->format);
     936             : 
     937           0 :         out->color_trc   = default_trc[FFMIN(s->user_all, CS_NB)];
     938           0 :         if (out->color_trc == AVCOL_TRC_BT2020_10 && desc && desc->comp[0].depth >= 12)
     939           0 :             out->color_trc = AVCOL_TRC_BT2020_12;
     940             :     } else {
     941           0 :         out->color_trc   = s->user_trc;
     942             :     }
     943           0 :     out->colorspace      = s->user_csp == AVCOL_SPC_UNSPECIFIED ?
     944           0 :                            default_csp[FFMIN(s->user_all, CS_NB)] : s->user_csp;
     945           0 :     out->color_range     = s->user_rng == AVCOL_RANGE_UNSPECIFIED ?
     946           0 :                            in->color_range : s->user_rng;
     947           0 :     if (rgb_sz != s->rgb_sz) {
     948           0 :         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(out->format);
     949           0 :         int uvw = in->width >> desc->log2_chroma_w;
     950             : 
     951           0 :         av_freep(&s->rgb[0]);
     952           0 :         av_freep(&s->rgb[1]);
     953           0 :         av_freep(&s->rgb[2]);
     954           0 :         s->rgb_sz = 0;
     955           0 :         av_freep(&s->dither_scratch_base[0][0]);
     956           0 :         av_freep(&s->dither_scratch_base[0][1]);
     957           0 :         av_freep(&s->dither_scratch_base[1][0]);
     958           0 :         av_freep(&s->dither_scratch_base[1][1]);
     959           0 :         av_freep(&s->dither_scratch_base[2][0]);
     960           0 :         av_freep(&s->dither_scratch_base[2][1]);
     961             : 
     962           0 :         s->rgb[0] = av_malloc(rgb_sz);
     963           0 :         s->rgb[1] = av_malloc(rgb_sz);
     964           0 :         s->rgb[2] = av_malloc(rgb_sz);
     965           0 :         s->dither_scratch_base[0][0] =
     966           0 :             av_malloc(sizeof(*s->dither_scratch_base[0][0]) * (in->width + 4));
     967           0 :         s->dither_scratch_base[0][1] =
     968           0 :             av_malloc(sizeof(*s->dither_scratch_base[0][1]) * (in->width + 4));
     969           0 :         s->dither_scratch_base[1][0] =
     970           0 :             av_malloc(sizeof(*s->dither_scratch_base[1][0]) * (uvw + 4));
     971           0 :         s->dither_scratch_base[1][1] =
     972           0 :             av_malloc(sizeof(*s->dither_scratch_base[1][1]) * (uvw + 4));
     973           0 :         s->dither_scratch_base[2][0] =
     974           0 :             av_malloc(sizeof(*s->dither_scratch_base[2][0]) * (uvw + 4));
     975           0 :         s->dither_scratch_base[2][1] =
     976           0 :             av_malloc(sizeof(*s->dither_scratch_base[2][1]) * (uvw + 4));
     977           0 :         s->dither_scratch[0][0] = &s->dither_scratch_base[0][0][1];
     978           0 :         s->dither_scratch[0][1] = &s->dither_scratch_base[0][1][1];
     979           0 :         s->dither_scratch[1][0] = &s->dither_scratch_base[1][0][1];
     980           0 :         s->dither_scratch[1][1] = &s->dither_scratch_base[1][1][1];
     981           0 :         s->dither_scratch[2][0] = &s->dither_scratch_base[2][0][1];
     982           0 :         s->dither_scratch[2][1] = &s->dither_scratch_base[2][1][1];
     983           0 :         if (!s->rgb[0] || !s->rgb[1] || !s->rgb[2] ||
     984           0 :             !s->dither_scratch_base[0][0] || !s->dither_scratch_base[0][1] ||
     985           0 :             !s->dither_scratch_base[1][0] || !s->dither_scratch_base[1][1] ||
     986           0 :             !s->dither_scratch_base[2][0] || !s->dither_scratch_base[2][1]) {
     987           0 :             uninit(ctx);
     988           0 :             return AVERROR(ENOMEM);
     989             :         }
     990           0 :         s->rgb_sz = rgb_sz;
     991             :     }
     992           0 :     res = create_filtergraph(ctx, in, out);
     993           0 :     if (res < 0)
     994           0 :         return res;
     995           0 :     s->rgb_stride = rgb_stride / sizeof(int16_t);
     996           0 :     td.in = in;
     997           0 :     td.out = out;
     998           0 :     td.in_linesize[0] = in->linesize[0];
     999           0 :     td.in_linesize[1] = in->linesize[1];
    1000           0 :     td.in_linesize[2] = in->linesize[2];
    1001           0 :     td.out_linesize[0] = out->linesize[0];
    1002           0 :     td.out_linesize[1] = out->linesize[1];
    1003           0 :     td.out_linesize[2] = out->linesize[2];
    1004           0 :     td.in_ss_h = av_pix_fmt_desc_get(in->format)->log2_chroma_h;
    1005           0 :     td.out_ss_h = av_pix_fmt_desc_get(out->format)->log2_chroma_h;
    1006           0 :     if (s->yuv2yuv_passthrough) {
    1007           0 :         res = av_frame_copy(out, in);
    1008           0 :         if (res < 0)
    1009           0 :             return res;
    1010             :     } else {
    1011           0 :         ctx->internal->execute(ctx, convert, &td, NULL,
    1012           0 :                                FFMIN((in->height + 1) >> 1, ff_filter_get_nb_threads(ctx)));
    1013             :     }
    1014           0 :     av_frame_free(&in);
    1015             : 
    1016           0 :     return ff_filter_frame(outlink, out);
    1017             : }
    1018             : 
    1019           0 : static int query_formats(AVFilterContext *ctx)
    1020             : {
    1021             :     static const enum AVPixelFormat pix_fmts[] = {
    1022             :         AV_PIX_FMT_YUV420P,   AV_PIX_FMT_YUV422P,   AV_PIX_FMT_YUV444P,
    1023             :         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
    1024             :         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
    1025             :         AV_PIX_FMT_YUVJ420P,  AV_PIX_FMT_YUVJ422P,  AV_PIX_FMT_YUVJ444P,
    1026             :         AV_PIX_FMT_NONE
    1027             :     };
    1028             :     int res;
    1029           0 :     ColorSpaceContext *s = ctx->priv;
    1030           0 :     AVFilterFormats *formats = ff_make_format_list(pix_fmts);
    1031             : 
    1032           0 :     if (!formats)
    1033           0 :         return AVERROR(ENOMEM);
    1034           0 :     if (s->user_format == AV_PIX_FMT_NONE)
    1035           0 :         return ff_set_common_formats(ctx, formats);
    1036           0 :     res = ff_formats_ref(formats, &ctx->inputs[0]->out_formats);
    1037           0 :     if (res < 0)
    1038           0 :         return res;
    1039           0 :     formats = NULL;
    1040           0 :     res = ff_add_format(&formats, s->user_format);
    1041           0 :     if (res < 0)
    1042           0 :         return res;
    1043             : 
    1044           0 :     return ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
    1045             : }
    1046             : 
    1047           0 : static int config_props(AVFilterLink *outlink)
    1048             : {
    1049           0 :     AVFilterContext *ctx = outlink->dst;
    1050           0 :     AVFilterLink *inlink = outlink->src->inputs[0];
    1051             : 
    1052           0 :     if (inlink->w % 2 || inlink->h % 2) {
    1053           0 :         av_log(ctx, AV_LOG_ERROR, "Invalid odd size (%dx%d)\n",
    1054             :                inlink->w, inlink->h);
    1055           0 :         return AVERROR_PATCHWELCOME;
    1056             :     }
    1057             : 
    1058           0 :     outlink->w = inlink->w;
    1059           0 :     outlink->h = inlink->h;
    1060           0 :     outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
    1061           0 :     outlink->time_base = inlink->time_base;
    1062             : 
    1063           0 :     return 0;
    1064             : }
    1065             : 
    1066             : #define OFFSET(x) offsetof(ColorSpaceContext, x)
    1067             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
    1068             : #define ENUM(x, y, z) { x, "", 0, AV_OPT_TYPE_CONST, { .i64 = y }, INT_MIN, INT_MAX, FLAGS, z }
    1069             : 
    1070             : static const AVOption colorspace_options[] = {
    1071             :     { "all",        "Set all color properties together",
    1072             :       OFFSET(user_all),   AV_OPT_TYPE_INT, { .i64 = CS_UNSPECIFIED },
    1073             :       CS_UNSPECIFIED, CS_NB - 1, FLAGS, "all" },
    1074             :     ENUM("bt470m",      CS_BT470M,             "all"),
    1075             :     ENUM("bt470bg",     CS_BT470BG,            "all"),
    1076             :     ENUM("bt601-6-525", CS_BT601_6_525,        "all"),
    1077             :     ENUM("bt601-6-625", CS_BT601_6_625,        "all"),
    1078             :     ENUM("bt709",       CS_BT709,              "all"),
    1079             :     ENUM("smpte170m",   CS_SMPTE170M,          "all"),
    1080             :     ENUM("smpte240m",   CS_SMPTE240M,          "all"),
    1081             :     ENUM("bt2020",      CS_BT2020,             "all"),
    1082             : 
    1083             :     { "space",      "Output colorspace",
    1084             :       OFFSET(user_csp),   AV_OPT_TYPE_INT, { .i64 = AVCOL_SPC_UNSPECIFIED },
    1085             :       AVCOL_SPC_RGB, AVCOL_SPC_NB - 1, FLAGS,  "csp"},
    1086             :     ENUM("bt709",       AVCOL_SPC_BT709,       "csp"),
    1087             :     ENUM("fcc",         AVCOL_SPC_FCC,         "csp"),
    1088             :     ENUM("bt470bg",     AVCOL_SPC_BT470BG,     "csp"),
    1089             :     ENUM("smpte170m",   AVCOL_SPC_SMPTE170M,   "csp"),
    1090             :     ENUM("smpte240m",   AVCOL_SPC_SMPTE240M,   "csp"),
    1091             :     ENUM("ycgco",       AVCOL_SPC_YCGCO,       "csp"),
    1092             :     ENUM("gbr",         AVCOL_SPC_RGB,         "csp"),
    1093             :     ENUM("bt2020nc",    AVCOL_SPC_BT2020_NCL,  "csp"),
    1094             :     ENUM("bt2020ncl",   AVCOL_SPC_BT2020_NCL,  "csp"),
    1095             : 
    1096             :     { "range",      "Output color range",
    1097             :       OFFSET(user_rng),   AV_OPT_TYPE_INT, { .i64 = AVCOL_RANGE_UNSPECIFIED },
    1098             :       AVCOL_RANGE_UNSPECIFIED, AVCOL_RANGE_NB - 1, FLAGS, "rng" },
    1099             :     ENUM("tv",          AVCOL_RANGE_MPEG,      "rng"),
    1100             :     ENUM("mpeg",        AVCOL_RANGE_MPEG,      "rng"),
    1101             :     ENUM("pc",          AVCOL_RANGE_JPEG,      "rng"),
    1102             :     ENUM("jpeg",        AVCOL_RANGE_JPEG,      "rng"),
    1103             : 
    1104             :     { "primaries",  "Output color primaries",
    1105             :       OFFSET(user_prm),   AV_OPT_TYPE_INT, { .i64 = AVCOL_PRI_UNSPECIFIED },
    1106             :       AVCOL_PRI_RESERVED0, AVCOL_PRI_NB - 1, FLAGS, "prm" },
    1107             :     ENUM("bt709",        AVCOL_PRI_BT709,      "prm"),
    1108             :     ENUM("bt470m",       AVCOL_PRI_BT470M,     "prm"),
    1109             :     ENUM("bt470bg",      AVCOL_PRI_BT470BG,    "prm"),
    1110             :     ENUM("smpte170m",    AVCOL_PRI_SMPTE170M,  "prm"),
    1111             :     ENUM("smpte240m",    AVCOL_PRI_SMPTE240M,  "prm"),
    1112             :     ENUM("smpte428",     AVCOL_PRI_SMPTE428,   "prm"),
    1113             :     ENUM("film",         AVCOL_PRI_FILM,       "prm"),
    1114             :     ENUM("smpte431",     AVCOL_PRI_SMPTE431,   "prm"),
    1115             :     ENUM("smpte432",     AVCOL_PRI_SMPTE432,   "prm"),
    1116             :     ENUM("bt2020",       AVCOL_PRI_BT2020,     "prm"),
    1117             :     ENUM("jedec-p22",    AVCOL_PRI_JEDEC_P22,  "prm"),
    1118             : 
    1119             :     { "trc",        "Output transfer characteristics",
    1120             :       OFFSET(user_trc),   AV_OPT_TYPE_INT, { .i64 = AVCOL_TRC_UNSPECIFIED },
    1121             :       AVCOL_TRC_RESERVED0, AVCOL_TRC_NB - 1, FLAGS, "trc" },
    1122             :     ENUM("bt709",        AVCOL_TRC_BT709,        "trc"),
    1123             :     ENUM("bt470m",       AVCOL_TRC_GAMMA22,      "trc"),
    1124             :     ENUM("gamma22",      AVCOL_TRC_GAMMA22,      "trc"),
    1125             :     ENUM("bt470bg",      AVCOL_TRC_GAMMA28,      "trc"),
    1126             :     ENUM("gamma28",      AVCOL_TRC_GAMMA28,      "trc"),
    1127             :     ENUM("smpte170m",    AVCOL_TRC_SMPTE170M,    "trc"),
    1128             :     ENUM("smpte240m",    AVCOL_TRC_SMPTE240M,    "trc"),
    1129             :     ENUM("srgb",         AVCOL_TRC_IEC61966_2_1, "trc"),
    1130             :     ENUM("iec61966-2-1", AVCOL_TRC_IEC61966_2_1, "trc"),
    1131             :     ENUM("xvycc",        AVCOL_TRC_IEC61966_2_4, "trc"),
    1132             :     ENUM("iec61966-2-4", AVCOL_TRC_IEC61966_2_4, "trc"),
    1133             :     ENUM("bt2020-10",    AVCOL_TRC_BT2020_10,    "trc"),
    1134             :     ENUM("bt2020-12",    AVCOL_TRC_BT2020_12,    "trc"),
    1135             : 
    1136             :     { "format",   "Output pixel format",
    1137             :       OFFSET(user_format), AV_OPT_TYPE_INT,  { .i64 = AV_PIX_FMT_NONE },
    1138             :       AV_PIX_FMT_NONE, AV_PIX_FMT_GBRAP12LE, FLAGS, "fmt" },
    1139             :     ENUM("yuv420p",   AV_PIX_FMT_YUV420P,   "fmt"),
    1140             :     ENUM("yuv420p10", AV_PIX_FMT_YUV420P10, "fmt"),
    1141             :     ENUM("yuv420p12", AV_PIX_FMT_YUV420P12, "fmt"),
    1142             :     ENUM("yuv422p",   AV_PIX_FMT_YUV422P,   "fmt"),
    1143             :     ENUM("yuv422p10", AV_PIX_FMT_YUV422P10, "fmt"),
    1144             :     ENUM("yuv422p12", AV_PIX_FMT_YUV422P12, "fmt"),
    1145             :     ENUM("yuv444p",   AV_PIX_FMT_YUV444P,   "fmt"),
    1146             :     ENUM("yuv444p10", AV_PIX_FMT_YUV444P10, "fmt"),
    1147             :     ENUM("yuv444p12", AV_PIX_FMT_YUV444P12, "fmt"),
    1148             : 
    1149             :     { "fast",     "Ignore primary chromaticity and gamma correction",
    1150             :       OFFSET(fast_mode), AV_OPT_TYPE_BOOL,  { .i64 = 0    },
    1151             :       0, 1, FLAGS },
    1152             : 
    1153             :     { "dither",   "Dithering mode",
    1154             :       OFFSET(dither), AV_OPT_TYPE_INT, { .i64 = DITHER_NONE },
    1155             :       DITHER_NONE, DITHER_NB - 1, FLAGS, "dither" },
    1156             :     ENUM("none", DITHER_NONE, "dither"),
    1157             :     ENUM("fsb",  DITHER_FSB,  "dither"),
    1158             : 
    1159             :     { "wpadapt", "Whitepoint adaptation method",
    1160             :       OFFSET(wp_adapt), AV_OPT_TYPE_INT, { .i64 = WP_ADAPT_BRADFORD },
    1161             :       WP_ADAPT_BRADFORD, NB_WP_ADAPT - 1, FLAGS, "wpadapt" },
    1162             :     ENUM("bradford", WP_ADAPT_BRADFORD, "wpadapt"),
    1163             :     ENUM("vonkries", WP_ADAPT_VON_KRIES, "wpadapt"),
    1164             :     ENUM("identity", WP_ADAPT_IDENTITY, "wpadapt"),
    1165             : 
    1166             :     { "iall",       "Set all input color properties together",
    1167             :       OFFSET(user_iall),   AV_OPT_TYPE_INT, { .i64 = CS_UNSPECIFIED },
    1168             :       CS_UNSPECIFIED, CS_NB - 1, FLAGS, "all" },
    1169             :     { "ispace",     "Input colorspace",
    1170             :       OFFSET(user_icsp),  AV_OPT_TYPE_INT, { .i64 = AVCOL_SPC_UNSPECIFIED },
    1171             :       AVCOL_PRI_RESERVED0, AVCOL_PRI_NB - 1, FLAGS, "csp" },
    1172             :     { "irange",     "Input color range",
    1173             :       OFFSET(user_irng),  AV_OPT_TYPE_INT, { .i64 = AVCOL_RANGE_UNSPECIFIED },
    1174             :       AVCOL_RANGE_UNSPECIFIED, AVCOL_RANGE_NB - 1, FLAGS, "rng" },
    1175             :     { "iprimaries", "Input color primaries",
    1176             :       OFFSET(user_iprm),  AV_OPT_TYPE_INT, { .i64 = AVCOL_PRI_UNSPECIFIED },
    1177             :       AVCOL_PRI_RESERVED0, AVCOL_PRI_NB - 1, FLAGS, "prm" },
    1178             :     { "itrc",       "Input transfer characteristics",
    1179             :       OFFSET(user_itrc),  AV_OPT_TYPE_INT, { .i64 = AVCOL_TRC_UNSPECIFIED },
    1180             :       AVCOL_TRC_RESERVED0, AVCOL_TRC_NB - 1, FLAGS, "trc" },
    1181             : 
    1182             :     { NULL }
    1183             : };
    1184             : 
    1185             : AVFILTER_DEFINE_CLASS(colorspace);
    1186             : 
    1187             : static const AVFilterPad inputs[] = {
    1188             :     {
    1189             :         .name         = "default",
    1190             :         .type         = AVMEDIA_TYPE_VIDEO,
    1191             :         .filter_frame = filter_frame,
    1192             :     },
    1193             :     { NULL }
    1194             : };
    1195             : 
    1196             : static const AVFilterPad outputs[] = {
    1197             :     {
    1198             :         .name         = "default",
    1199             :         .type         = AVMEDIA_TYPE_VIDEO,
    1200             :         .config_props = config_props,
    1201             :     },
    1202             :     { NULL }
    1203             : };
    1204             : 
    1205             : AVFilter ff_vf_colorspace = {
    1206             :     .name            = "colorspace",
    1207             :     .description     = NULL_IF_CONFIG_SMALL("Convert between colorspaces."),
    1208             :     .init            = init,
    1209             :     .uninit          = uninit,
    1210             :     .query_formats   = query_formats,
    1211             :     .priv_size       = sizeof(ColorSpaceContext),
    1212             :     .priv_class      = &colorspace_class,
    1213             :     .inputs          = inputs,
    1214             :     .outputs         = outputs,
    1215             :     .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
    1216             : };

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