@@ -21,6 +21,7 @@ version <next>:

 - extensive native AAC encoder improvements

 - ADPCM PSX decoder

 - genh, vag, ads & svag demuxer

+- zscale filter

 version 2.8:

@@ -269,6 +269,7 @@ External library support:

   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]

   --enable-libxvid         enable Xvid encoding via xvidcore,

                            native MPEG-4/Xvid encoder exists [no]

+  --enable-libzimg         enable z.lib, needed for zscale filter [no]

   --enable-libzmq          enable message passing via libzmq [no]

   --enable-libzvbi         enable teletext support via libzvbi [no]

   --disable-lzma           disable lzma [autodetect]

@@ -1456,6 +1457,7 @@ EXTERNAL_LIBRARY_LIST="

     libxcb_shape

     libxcb_xfixes

     libxvid

+    libzimg

     libzmq

     libzvbi

     lzma

@@ -2843,6 +2845,7 @@ tinterlace_pad_test_deps="tinterlace_filter"

 uspp_filter_deps="gpl avcodec"

 zmq_filter_deps="libzmq"

 zoompan_filter_deps="swscale"

+zscale_filter_deps="libzimg"

 # examples

 avio_reading="avformat avcodec avutil"

@@ -5423,6 +5426,7 @@ enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&

                                die "ERROR: libx265 version must be >= 57."; }

 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs

 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore

+enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version

 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new

 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi

 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||

@@ -11856,6 +11856,177 @@ zoompan=z='min(zoom+0.0015,1.5)':d=700:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)'

 @end example

 @end itemize

+@section zscale

+Scale (resize) the input video, using the z.lib library:

+https://github.com/sekrit-twc/zimg.

+

+The zscale filter forces the output display aspect ratio to be the same

+as the input, by changing the output sample aspect ratio.

+

+If the input image format is different from the format requested by

+the next filter, the zscale filter will convert the input to the

+requested format.

+

+@subsection Options

+The filter accepts the following options.

+

+@table @option

+@item width, w

+@item height, h

+Set the output video dimension expression. Default value is the input

+dimension.

+

+If the @var{width} or @var{w} is 0, the input width is used for the output.

+If the @var{height} or @var{h} is 0, the input height is used for the output.

+

+If one of the values is -1, the zscale filter will use a value that

+maintains the aspect ratio of the input image, calculated from the

+other specified dimension. If both of them are -1, the input size is

+used

+

+If one of the values is -n with n > 1, the zscale filter will also use a value

+that maintains the aspect ratio of the input image, calculated from the other

+specified dimension. After that it will, however, make sure that the calculated

+dimension is divisible by n and adjust the value if necessary.

+

+See below for the list of accepted constants for use in the dimension

+expression.

+

+@item size, s

+Set the video size. For the syntax of this option, check the

+@ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}.

+

+@item dither, d

+Set the dither type.

+

+Possible values are:

+@table @var

+@item none

+@item ordered

+@item random

+@item error_diffusion

+@end table

+

+Default is none.

+

+@item filter, f

+Set the resize filter type.

+

+Possible values are:

+@table @var

+@item point

+@item bilinear

+@item bicubic

+@item spline16

+@item spline36

+@item lanczos

+@end table

+

+Default is bilinear.

+

+@item range, r

+Set the color range.

+

+Possible values are:

+@table @var

+@item input

+@item limited

+@item full

+@end table

+

+Default is same as input.

+

+@item primaries, p

+Set the color primaries.

+

+Possible values are:

+@table @var

+@item input

+@item 709

+@item unspecified

+@item 170m

+@item 240m

+@item 2020

+@end table

+

+Default is same as input.

+

+@item transfer, t

+Set the transfer characteristics.

+

+Possible values are:

+@table @var

+@item input

+@item 709

+@item unspecified

+@item 601

+@item linear

+@item 2020_10

+@item 2020_12

+@end table

+

+Default is same as input.

+

+@item matrix, m

+Set the colorspace matrix.

+

+Possible value are:

+@table @var

+@item input

+@item 709

+@item unspecified

+@item 470bg

+@item 170m

+@item 2020_ncl

+@item 2020_cl

+@end table

+

+Default is same as input.

+@end table

+

+The values of the @option{w} and @option{h} options are expressions

+containing the following constants:

+

+@table @var

+@item in_w

+@item in_h

+The input width and height

+

+@item iw

+@item ih

+These are the same as @var{in_w} and @var{in_h}.

+

+@item out_w

+@item out_h

+The output (scaled) width and height

+

+@item ow

+@item oh

+These are the same as @var{out_w} and @var{out_h}

+

+@item a

+The same as @var{iw} / @var{ih}

+

+@item sar

+input sample aspect ratio

+

+@item dar

+The input display aspect ratio. Calculated from @code{(iw / ih) * sar}.

+

+@item hsub

+@item vsub

+horizontal and vertical input chroma subsample values. For example for the

+pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.

+

+@item ohsub

+@item ovsub

+horizontal and vertical output chroma subsample values. For example for the

+pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.

+@end table

+

+@table @option

+@end table

+

 @c man end VIDEO FILTERS

 @chapter Video Sources

@@ -246,6 +246,7 @@ OBJS-$(CONFIG_XBR_FILTER)                    += vf_xbr.o

 OBJS-$(CONFIG_YADIF_FILTER)                  += vf_yadif.o

 OBJS-$(CONFIG_ZMQ_FILTER)                    += f_zmq.o

 OBJS-$(CONFIG_ZOOMPAN_FILTER)                += vf_zoompan.o

+OBJS-$(CONFIG_ZSCALE_FILTER)                 += vf_zscale.o

 OBJS-$(CONFIG_ALLRGB_FILTER)                 += vsrc_testsrc.o

 OBJS-$(CONFIG_ALLYUV_FILTER)                 += vsrc_testsrc.o

@@ -267,6 +267,7 @@ void avfilter_register_all(void)

     REGISTER_FILTER(YADIF,          yadif,          vf);

     REGISTER_FILTER(ZMQ,            zmq,            vf);

     REGISTER_FILTER(ZOOMPAN,        zoompan,        vf);

+    REGISTER_FILTER(ZSCALE,         zscale,         vf);

     REGISTER_FILTER(ALLRGB,         allrgb,         vsrc);

     REGISTER_FILTER(ALLYUV,         allyuv,         vsrc);

@@ -30,7 +30,7 @@

 #include "libavutil/version.h"

 #define LIBAVFILTER_VERSION_MAJOR   6

-#define LIBAVFILTER_VERSION_MINOR  11

+#define LIBAVFILTER_VERSION_MINOR  12

 #define LIBAVFILTER_VERSION_MICRO 100

 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

new file mode 100644

@@ -0,0 +1,736 @@

+/*

+ * Copyright (c) 2015 Paul B Mahol

+ *

+ * This file is part of FFmpeg.

+ *

+ * FFmpeg is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 2.1 of the License, or (at your option) any later version.

+ *

+ * FFmpeg is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with FFmpeg; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+/**

+ * @file

+ * zscale video filter using z.lib library

+ */

+

+#include <stdio.h>

+#include <string.h>

+

+#include <zimg.h>

+

+#include "avfilter.h"

+#include "formats.h"

+#include "internal.h"

+#include "video.h"

+#include "libavutil/avstring.h"

+#include "libavutil/eval.h"

+#include "libavutil/internal.h"

+#include "libavutil/mathematics.h"

+#include "libavutil/opt.h"

+#include "libavutil/parseutils.h"

+#include "libavutil/pixdesc.h"

+#include "libavutil/imgutils.h"

+#include "libavutil/avassert.h"

+

+static const char *const var_names[] = {

+    "in_w",   "iw",

+    "in_h",   "ih",

+    "out_w",  "ow",

+    "out_h",  "oh",

+    "a",

+    "sar",

+    "dar",

+    "hsub",

+    "vsub",

+    "ohsub",

+    "ovsub",

+    NULL

+};

+

+enum var_name {

+    VAR_IN_W,   VAR_IW,

+    VAR_IN_H,   VAR_IH,

+    VAR_OUT_W,  VAR_OW,

+    VAR_OUT_H,  VAR_OH,

+    VAR_A,

+    VAR_SAR,

+    VAR_DAR,

+    VAR_HSUB,

+    VAR_VSUB,

+    VAR_OHSUB,

+    VAR_OVSUB,

+    VARS_NB

+};

+

+typedef struct ZScaleContext {

+    const AVClass *class;

+

+    /**

+     * New dimensions. Special values are:

+     *   0 = original width/height

+     *  -1 = keep original aspect

+     *  -N = try to keep aspect but make sure it is divisible by N

+     */

+    int w, h;

+    int dither;

+    int filter;

+    int colorspace;

+    int trc;

+    int primaries;

+    int range;

+    char *size_str;

+

+    char *w_expr;               ///< width  expression string

+    char *h_expr;               ///< height expression string

+

+    int out_h_chr_pos;

+    int out_v_chr_pos;

+    int in_h_chr_pos;

+    int in_v_chr_pos;

+

+    int force_original_aspect_ratio;

+

+    void *tmp;

+    size_t tmp_size;

+

+    zimg_image_format src_format, dst_format;

+    zimg_image_format alpha_src_format, alpha_dst_format;

+    zimg_graph_builder_params alpha_params, params;

+    zimg_filter_graph *alpha_graph, *graph;

+

+    enum AVColorSpace in_colorspace, out_colorspace;

+    enum AVColorTransferCharacteristic in_trc, out_trc;

+    enum AVColorPrimaries in_primaries, out_primaries;

+    enum AVColorRange in_range, out_range;

+} ZScaleContext;

+

+static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)

+{

+    ZScaleContext *s = ctx->priv;

+    int ret;

+

+    if (s->size_str && (s->w_expr || s->h_expr)) {

+        av_log(ctx, AV_LOG_ERROR,

+               "Size and width/height expressions cannot be set at the same time.\n");

+            return AVERROR(EINVAL);

+    }

+

+    if (s->w_expr && !s->h_expr)

+        FFSWAP(char *, s->w_expr, s->size_str);

+

+    if (s->size_str) {

+        char buf[32];

+        if ((ret = av_parse_video_size(&s->w, &s->h, s->size_str)) < 0) {

+            av_log(ctx, AV_LOG_ERROR,

+                   "Invalid size '%s'\n", s->size_str);

+            return ret;

+        }

+        snprintf(buf, sizeof(buf)-1, "%d", s->w);

+        av_opt_set(s, "w", buf, 0);

+        snprintf(buf, sizeof(buf)-1, "%d", s->h);

+        av_opt_set(s, "h", buf, 0);

+    }

+    if (!s->w_expr)

+        av_opt_set(s, "w", "iw", 0);

+    if (!s->h_expr)

+        av_opt_set(s, "h", "ih", 0);

+

+    return 0;

+}

+

+static int query_formats(AVFilterContext *ctx)

+{

+    static const enum AVPixelFormat pixel_fmts[] = {

+        AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,

+        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,

+        AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,

+        AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,

+        AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,

+        AV_PIX_FMT_YUVJ411P,

+        AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,

+        AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,

+        AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,

+        AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,

+        AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,

+        AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,

+        AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,

+        AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,

+        AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,

+        AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,

+        AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,

+        AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,

+        AV_PIX_FMT_NONE

+    };

+    int ret;

+

+    ret = ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->inputs[0]->out_formats);

+    if (ret < 0)

+        return ret;

+    return ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->outputs[0]->in_formats);

+}

+

+static int config_props(AVFilterLink *outlink)

+{

+    AVFilterContext *ctx = outlink->src;

+    AVFilterLink *inlink = outlink->src->inputs[0];

+    ZScaleContext *s = ctx->priv;

+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);

+    const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(outlink->format);

+    int64_t w, h;

+    double var_values[VARS_NB], res;

+    char *expr;

+    int ret;

+    int factor_w, factor_h;

+

+    var_values[VAR_IN_W]  = var_values[VAR_IW] = inlink->w;

+    var_values[VAR_IN_H]  = var_values[VAR_IH] = inlink->h;

+    var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;

+    var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;

+    var_values[VAR_A]     = (double) inlink->w / inlink->h;

+    var_values[VAR_SAR]   = inlink->sample_aspect_ratio.num ?

+        (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;

+    var_values[VAR_DAR]   = var_values[VAR_A] * var_values[VAR_SAR];

+    var_values[VAR_HSUB]  = 1 << desc->log2_chroma_w;

+    var_values[VAR_VSUB]  = 1 << desc->log2_chroma_h;

+    var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;

+    var_values[VAR_OVSUB] = 1 << out_desc->log2_chroma_h;

+

+    /* evaluate width and height */

+    av_expr_parse_and_eval(&res, (expr = s->w_expr),

+                           var_names, var_values,

+                           NULL, NULL, NULL, NULL, NULL, 0, ctx);

+    s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;

+    if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),

+                                      var_names, var_values,

+                                      NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)

+        goto fail;

+    s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;

+    /* evaluate again the width, as it may depend on the output height */

+    if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),

+                                      var_names, var_values,

+                                      NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)

+        goto fail;

+    s->w = res;

+

+    w = s->w;

+    h = s->h;

+

+    /* Check if it is requested that the result has to be divisible by a some

+     * factor (w or h = -n with n being the factor). */

+    factor_w = 1;

+    factor_h = 1;

+    if (w < -1) {

+        factor_w = -w;

+    }

+    if (h < -1) {

+        factor_h = -h;

+    }

+

+    if (w < 0 && h < 0)

+        s->w = s->h = 0;

+

+    if (!(w = s->w))

+        w = inlink->w;

+    if (!(h = s->h))

+        h = inlink->h;

+

+    /* Make sure that the result is divisible by the factor we determined

+     * earlier. If no factor was set, it is nothing will happen as the default

+     * factor is 1 */

+    if (w < 0)

+        w = av_rescale(h, inlink->w, inlink->h * factor_w) * factor_w;

+    if (h < 0)

+        h = av_rescale(w, inlink->h, inlink->w * factor_h) * factor_h;

+

+    /* Note that force_original_aspect_ratio may overwrite the previous set

+     * dimensions so that it is not divisible by the set factors anymore. */

+    if (s->force_original_aspect_ratio) {

+        int tmp_w = av_rescale(h, inlink->w, inlink->h);

+        int tmp_h = av_rescale(w, inlink->h, inlink->w);

+

+        if (s->force_original_aspect_ratio == 1) {

+             w = FFMIN(tmp_w, w);

+             h = FFMIN(tmp_h, h);

+        } else {

+             w = FFMAX(tmp_w, w);

+             h = FFMAX(tmp_h, h);

+        }

+    }

+

+    if (w > INT_MAX || h > INT_MAX ||

+        (h * inlink->w) > INT_MAX  ||

+        (w * inlink->h) > INT_MAX)

+        av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");

+

+    outlink->w = w;

+    outlink->h = h;

+

+    if (inlink->w == outlink->w &&

+        inlink->h == outlink->h &&

+        inlink->format == outlink->format)

+        ;

+    else {

+    }

+

+    if (inlink->sample_aspect_ratio.num){

+        outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);

+    } else

+        outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;

+

+    av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s sar:%d/%d -> w:%d h:%d fmt:%s sar:%d/%d\n",

+           inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format),

+           inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den,

+           outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),

+           outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den);

+    return 0;

+

+fail:

+    av_log(ctx, AV_LOG_ERROR,

+           "Error when evaluating the expression '%s'.\n"

+           "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n",

+           expr, s->w_expr, s->h_expr);

+    return ret;

+}

+

+static int print_zimg_error(AVFilterContext *ctx)

+{

+    char err_msg[1024];

+    int err_code = zimg_get_last_error(err_msg, sizeof(err_msg));

+

+    av_log(ctx, AV_LOG_ERROR, "code %d: %s\n", err_code, err_msg);

+

+    return err_code;

+}

+

+static int convert_matrix(enum AVColorSpace colorspace)

+{

+    switch (colorspace) {

+    case AVCOL_SPC_RGB:

+        return ZIMG_MATRIX_RGB;

+    case AVCOL_SPC_BT709:

+        return ZIMG_MATRIX_709;

+    case AVCOL_SPC_UNSPECIFIED:

+        return ZIMG_MATRIX_UNSPECIFIED;

+    case AVCOL_SPC_BT470BG:

+        return ZIMG_MATRIX_470BG;

+    case AVCOL_SPC_SMPTE170M:

+        return ZIMG_MATRIX_170M;

+    case AVCOL_SPC_YCGCO:

+        return ZIMG_MATRIX_YCGCO;

+    case AVCOL_SPC_BT2020_NCL:

+        return ZIMG_MATRIX_2020_NCL;

+    case AVCOL_SPC_BT2020_CL:

+        return ZIMG_MATRIX_2020_CL;

+    }

+    return ZIMG_MATRIX_UNSPECIFIED;

+}

+

+static int convert_trc(enum AVColorTransferCharacteristic color_trc)

+{

+    switch (color_trc) {

+    case AVCOL_TRC_UNSPECIFIED:

+        return ZIMG_TRANSFER_UNSPECIFIED;

+    case AVCOL_TRC_BT709:

+        return ZIMG_TRANSFER_709;

+    case AVCOL_TRC_SMPTE170M:

+        return ZIMG_TRANSFER_601;

+    case AVCOL_TRC_LINEAR:

+        return ZIMG_TRANSFER_LINEAR;

+    case AVCOL_TRC_BT2020_10:

+        return ZIMG_TRANSFER_2020_10;

+    case AVCOL_TRC_BT2020_12:

+        return ZIMG_TRANSFER_2020_12;

+    }

+    return ZIMG_TRANSFER_UNSPECIFIED;

+}

+

+static int convert_primaries(enum AVColorPrimaries color_primaries)

+{

+    switch (color_primaries) {

+    case AVCOL_PRI_UNSPECIFIED:

+        return ZIMG_PRIMARIES_UNSPECIFIED;

+    case AVCOL_PRI_BT709:

+        return ZIMG_PRIMARIES_709;

+    case AVCOL_PRI_SMPTE170M:

+        return ZIMG_PRIMARIES_170M;

+    case AVCOL_PRI_SMPTE240M:

+        return ZIMG_PRIMARIES_240M;

+    case AVCOL_PRI_BT2020:

+        return ZIMG_PRIMARIES_2020;

+    }

+    return ZIMG_PRIMARIES_UNSPECIFIED;

+}

+

+static int convert_range(enum AVColorRange color_range)

+{

+    switch (color_range) {

+    case AVCOL_RANGE_UNSPECIFIED:

+    case AVCOL_RANGE_MPEG:

+        return ZIMG_RANGE_LIMITED;

+    case AVCOL_RANGE_JPEG:

+        return ZIMG_RANGE_FULL;

+    }

+    return ZIMG_RANGE_LIMITED;

+}

+

+static int filter_frame(AVFilterLink *link, AVFrame *in)

+{

+    ZScaleContext *s = link->dst->priv;

+    AVFilterLink *outlink = link->dst->outputs[0];

+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);

+    const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);

+    zimg_image_buffer_const src_buf = { ZIMG_API_VERSION };

+    zimg_image_buffer dst_buf = { ZIMG_API_VERSION };

+    char buf[32];

+    size_t tmp_size;

+    int ret = 0, plane;

+    AVFrame *out;

+

+    out = ff_get_video_buffer(outlink, outlink->w, outlink->h);

+    if (!out) {

+        av_frame_free(&in);

+        return AVERROR(ENOMEM);

+    }

+

+    av_frame_copy_props(out, in);

+    out->width  = outlink->w;

+    out->height = outlink->h;

+

+    if(   in->width  != link->w

+       || in->height != link->h

+       || in->format != link->format

+       || s->in_colorspace != in->colorspace

+       || s->in_trc  != in->color_trc

+       || s->in_primaries != in->color_primaries

+       || s->in_range != in->color_range

+       || s->out_colorspace != out->colorspace

+       || s->out_trc  != out->color_trc

+       || s->out_primaries != out->color_primaries

+       || s->out_range != out->color_range) {

+        snprintf(buf, sizeof(buf)-1, "%d", outlink->w);

+        av_opt_set(s, "w", buf, 0);

+        snprintf(buf, sizeof(buf)-1, "%d", outlink->h);

+        av_opt_set(s, "h", buf, 0);

+

+        link->dst->inputs[0]->format = in->format;

+        link->dst->inputs[0]->w      = in->width;

+        link->dst->inputs[0]->h      = in->height;

+

+        if ((ret = config_props(outlink)) < 0) {

+            av_frame_free(&in);

+            av_frame_free(&out);

+            return ret;

+        }

+

+        zimg_image_format_default(&s->src_format, ZIMG_API_VERSION);

+        zimg_image_format_default(&s->dst_format, ZIMG_API_VERSION);

+        zimg_graph_builder_params_default(&s->params, ZIMG_API_VERSION);

+

+        s->params.dither_type = s->dither;

+        s->params.cpu_type = ZIMG_CPU_AUTO;

+        s->params.resample_filter = s->filter;

+        s->params.resample_filter_uv = s->filter;

+

+        s->src_format.width = in->width;

+        s->src_format.height = in->height;

+        s->src_format.subsample_w = desc->log2_chroma_w;

+        s->src_format.subsample_h = desc->log2_chroma_h;

+        s->src_format.depth = desc->comp[0].depth;

+        s->src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;

+        s->src_format.color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;

+        s->src_format.matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : convert_matrix(in->colorspace);

+        s->src_format.transfer_characteristics = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_TRANSFER_UNSPECIFIED : convert_trc(in->color_trc);

+        s->src_format.color_primaries = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_PRIMARIES_UNSPECIFIED : convert_primaries(in->color_primaries);

+        s->src_format.pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : convert_range(in->color_range);

+

+        s->dst_format.width = out->width;

+        s->dst_format.height = out->height;

+        s->dst_format.subsample_w = odesc->log2_chroma_w;

+        s->dst_format.subsample_h = odesc->log2_chroma_h;

+        s->dst_format.depth = odesc->comp[0].depth;

+        s->dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;

+        s->dst_format.color_family = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;

+        s->dst_format.matrix_coefficients = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : s->colorspace == -1 ? convert_matrix(out->colorspace) : s->colorspace;

+        s->dst_format.transfer_characteristics = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_TRANSFER_UNSPECIFIED : s->trc == -1 ? convert_trc(out->color_trc) : s->trc;

+        s->dst_format.color_primaries = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_PRIMARIES_UNSPECIFIED : s->primaries == -1 ? convert_primaries(out->color_primaries) : s->primaries;

+        s->dst_format.pixel_range = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : s->range == -1 ? convert_range(out->color_range) : s->range;

+

+        if (s->colorspace != -1)

+            out->colorspace = (int)s->dst_format.matrix_coefficients;

+

+        if (s->primaries != -1)

+            out->color_primaries = (int)s->dst_format.color_primaries;

+

+        if (s->range != -1)

+            out->color_range = (int)s->dst_format.pixel_range + 1;

+

+        if (s->trc != -1)

+            out->color_trc = (int)s->dst_format.transfer_characteristics;

+

+        zimg_filter_graph_free(s->graph);

+        s->graph = zimg_filter_graph_build(&s->src_format, &s->dst_format, &s->params);

+        if (!s->graph) {

+            ret = print_zimg_error(link->dst);

+            goto fail;

+        }

+

+        if ((ret = zimg_filter_graph_get_tmp_size(s->graph, &tmp_size))) {

+            ret = print_zimg_error(link->dst);

+            goto fail;

+        }

+

+        if (tmp_size > s->tmp_size) {

+            av_freep(&s->tmp);

+            s->tmp = av_malloc(tmp_size);

+            if (!s->tmp) {

+                ret = AVERROR(ENOMEM);

+                goto fail;

+            }

+            s->tmp_size = tmp_size;

+        }

+

+        s->in_colorspace  = in->colorspace;

+        s->in_trc         = in->color_trc;

+        s->in_primaries   = in->color_primaries;

+        s->in_range       = in->color_range;

+        s->out_colorspace = out->colorspace;

+        s->out_trc        = out->color_trc;

+        s->out_primaries  = out->color_primaries;

+        s->out_range      = out->color_range;

+

+        if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {

+            zimg_image_format_default(&s->alpha_src_format, ZIMG_API_VERSION);

+            zimg_image_format_default(&s->alpha_dst_format, ZIMG_API_VERSION);

+            zimg_graph_builder_params_default(&s->alpha_params, ZIMG_API_VERSION);

+

+            s->alpha_params.dither_type = s->dither;

+            s->alpha_params.cpu_type = ZIMG_CPU_AUTO;

+            s->alpha_params.resample_filter = s->filter;

+

+            s->alpha_src_format.width = in->width;

+            s->alpha_src_format.height = in->height;

+            s->alpha_src_format.depth = desc->comp[0].depth;

+            s->alpha_src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;

+            s->alpha_src_format.color_family = ZIMG_COLOR_GREY;

+

+            s->alpha_dst_format.width = out->width;

+            s->alpha_dst_format.height = out->height;

+            s->alpha_dst_format.depth = odesc->comp[0].depth;

+            s->alpha_dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;

+            s->alpha_dst_format.color_family = ZIMG_COLOR_GREY;

+

+            zimg_filter_graph_free(s->alpha_graph);

+            s->alpha_graph = zimg_filter_graph_build(&s->alpha_src_format, &s->alpha_dst_format, &s->alpha_params);

+            if (!s->alpha_graph) {

+                ret = print_zimg_error(link->dst);

+                goto fail;

+            }

+        }

+    }

+

+    if (s->colorspace != -1)

+        out->colorspace = (int)s->dst_format.matrix_coefficients;

+

+    if (s->primaries != -1)

+        out->color_primaries = (int)s->dst_format.color_primaries;

+

+    if (s->range != -1)

+        out->color_range = (int)s->dst_format.pixel_range;

+

+    if (s->trc != -1)

+        out->color_trc = (int)s->dst_format.transfer_characteristics;

+

+    av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,

+              (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,

+              (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,

+              INT_MAX);

+

+    for (plane = 0; plane < 3; plane++) {

+        int p = desc->comp[plane].plane;

+        src_buf.plane[plane].data   = in->data[p];

+        src_buf.plane[plane].stride = in->linesize[p];

+        src_buf.plane[plane].mask   = -1;

+

+        p = odesc->comp[plane].plane;

+        dst_buf.plane[plane].data   = out->data[p];

+        dst_buf.plane[plane].stride = out->linesize[p];

+        dst_buf.plane[plane].mask   = -1;

+    }

+

+    ret = zimg_filter_graph_process(s->graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);

+    if (ret) {

+        print_zimg_error(link->dst);

+        goto fail;

+    }

+

+    if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {

+        src_buf.plane[0].data   = in->data[3];

+        src_buf.plane[0].stride = in->linesize[3];

+        src_buf.plane[0].mask   = -1;

+

+        dst_buf.plane[0].data   = out->data[3];

+        dst_buf.plane[0].stride = out->linesize[3];

+        dst_buf.plane[0].mask   = -1;

+

+        ret = zimg_filter_graph_process(s->alpha_graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);

+        if (ret) {

+            print_zimg_error(link->dst);

+            goto fail;

+        }

+    } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {

+        int y;

+

+        for (y = 0; y < outlink->h; y++)

+            memset(out->data[3] + y * out->linesize[3], 0xff, outlink->w);

+    }

+

+fail:

+    av_frame_free(&in);

+    if (ret) {

+        av_frame_free(&out);

+        return ret;

+    }

+

+    return ff_filter_frame(outlink, out);

+}

+

+static void uninit(AVFilterContext *ctx)

+{

+    ZScaleContext *s = ctx->priv;

+

+    zimg_filter_graph_free(s->graph);

+    av_freep(&s->tmp);

+    s->tmp_size = 0;

+}

+

+static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,

+                           char *res, int res_len, int flags)

+{

+    ZScaleContext *s = ctx->priv;

+    int ret;

+

+    if (   !strcmp(cmd, "width")  || !strcmp(cmd, "w")

+        || !strcmp(cmd, "height") || !strcmp(cmd, "h")) {

+

+        int old_w = s->w;

+        int old_h = s->h;

+        AVFilterLink *outlink = ctx->outputs[0];

+

+        av_opt_set(s, cmd, args, 0);

+        if ((ret = config_props(outlink)) < 0) {