2018-05-21 14:50 GMT+08:00 Ruiling Song <ruiling.s...@intel.com>:
> This filter does HDR(HDR10/HLG) to SDR conversion with tone-mapping.
>
> An example command to use this filter with vaapi codecs:
> FFMPEG -init_hw_device vaapi=va:/dev/dri/renderD128 -init_hw_device \
> opencl=ocl@va -hwaccel vaapi -hwaccel_device va -hwaccel_output_format \
> vaapi -i INPUT -filter_hw_device ocl -filter_complex \
> '[0:v]hwmap,tonemap_opencl=t=bt2020:tonemap=linear:format=p010[x1]; \
> [x1]hwmap=derive_device=vaapi:reverse=1' -c:v hevc_vaapi -profile 2 OUTPUT
>
> Signed-off-by: Ruiling Song <ruiling.s...@intel.com>
> ---
> configure | 1 +
> libavfilter/Makefile | 2 +
> libavfilter/allfilters.c | 1 +
> libavfilter/colorspace_basic.c | 89 ++++++
> libavfilter/colorspace_basic.h | 40 +++
> libavfilter/opencl/colorspace_basic.cl | 179 +++++++++++
> libavfilter/opencl/tonemap.cl | 258 +++++++++++++++
> libavfilter/opencl_source.h | 2 +
> libavfilter/vf_tonemap_opencl.c | 560
> +++++++++++++++++++++++++++++++++
> 9 files changed, 1132 insertions(+)
> create mode 100644 libavfilter/colorspace_basic.c
> create mode 100644 libavfilter/colorspace_basic.h
> create mode 100644 libavfilter/opencl/colorspace_basic.cl
> create mode 100644 libavfilter/opencl/tonemap.cl
> create mode 100644 libavfilter/vf_tonemap_opencl.c
>
> diff --git a/configure b/configure
> index e52f8f8..ee3586b 100755
> --- a/configure
> +++ b/configure
> @@ -3401,6 +3401,7 @@ tinterlace_filter_deps="gpl"
> tinterlace_merge_test_deps="tinterlace_filter"
> tinterlace_pad_test_deps="tinterlace_filter"
> tonemap_filter_deps="const_nan"
> +tonemap_opencl_filter_deps="opencl"
> unsharp_opencl_filter_deps="opencl"
> uspp_filter_deps="gpl avcodec"
> vaguedenoiser_filter_deps="gpl"
> diff --git a/libavfilter/Makefile b/libavfilter/Makefile
> index c68ef05..0915656 100644
> --- a/libavfilter/Makefile
> +++ b/libavfilter/Makefile
> @@ -352,6 +352,8 @@ OBJS-$(CONFIG_TINTERLACE_FILTER) +=
> vf_tinterlace.o
> OBJS-$(CONFIG_TLUT2_FILTER) += vf_lut2.o framesync.o
> OBJS-$(CONFIG_TMIX_FILTER) += vf_mix.o framesync.o
> OBJS-$(CONFIG_TONEMAP_FILTER) += vf_tonemap.o
> +OBJS-$(CONFIG_TONEMAP_OPENCL_FILTER) += vf_tonemap_opencl.o
> colorspace_basic.o opencl.o \
> + opencl/tonemap.o
> opencl/colorspace_basic.o
> OBJS-$(CONFIG_TRANSPOSE_FILTER) += vf_transpose.o
> OBJS-$(CONFIG_TRIM_FILTER) += trim.o
> OBJS-$(CONFIG_UNPREMULTIPLY_FILTER) += vf_premultiply.o framesync.o
> diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
> index b44093d..6873bab 100644
> --- a/libavfilter/allfilters.c
> +++ b/libavfilter/allfilters.c
> @@ -343,6 +343,7 @@ extern AVFilter ff_vf_tinterlace;
> extern AVFilter ff_vf_tlut2;
> extern AVFilter ff_vf_tmix;
> extern AVFilter ff_vf_tonemap;
> +extern AVFilter ff_vf_tonemap_opencl;
> extern AVFilter ff_vf_transpose;
> extern AVFilter ff_vf_trim;
> extern AVFilter ff_vf_unpremultiply;
> diff --git a/libavfilter/colorspace_basic.c b/libavfilter/colorspace_basic.c
> new file mode 100644
> index 0000000..93f9f08
> --- /dev/null
> +++ b/libavfilter/colorspace_basic.c
> @@ -0,0 +1,89 @@
> +/*
> + * 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
> + */
> +
> +#include "colorspace_basic.h"
> +
> +
> +void invert_matrix3x3(const double in[3][3], double out[3][3])
> +{
> + double m00 = in[0][0], m01 = in[0][1], m02 = in[0][2],
> + m10 = in[1][0], m11 = in[1][1], m12 = in[1][2],
> + m20 = in[2][0], m21 = in[2][1], m22 = in[2][2];
> + int i, j;
> + double det;
> +
> + out[0][0] = (m11 * m22 - m21 * m12);
> + out[0][1] = -(m01 * m22 - m21 * m02);
> + out[0][2] = (m01 * m12 - m11 * m02);
> + out[1][0] = -(m10 * m22 - m20 * m12);
> + out[1][1] = (m00 * m22 - m20 * m02);
> + out[1][2] = -(m00 * m12 - m10 * m02);
> + out[2][0] = (m10 * m21 - m20 * m11);
> + out[2][1] = -(m00 * m21 - m20 * m01);
> + out[2][2] = (m00 * m11 - m10 * m01);
> +
> + det = m00 * out[0][0] + m10 * out[0][1] + m20 * out[0][2];
> + det = 1.0 / det;
> +
> + for (i = 0; i < 3; i++) {
> + for (j = 0; j < 3; j++)
> + out[i][j] *= det;
> + }
> +}
> +
> +void mul3x3(double dst[3][3], const double src1[3][3], const double
> src2[3][3])
> +{
> + int m, n;
> +
> + for (m = 0; m < 3; m++)
> + for (n = 0; n < 3; n++)
> + dst[m][n] = src2[m][0] * src1[0][n] +
> + src2[m][1] * src1[1][n] +
> + src2[m][2] * src1[2][n];
> +}
> +/*
> + * see e.g. http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
> + */
> +void fill_rgb2xyz_table(const struct ColorPrimaries *coeffs,
> + const struct WhitePoint *wp,
> + double rgb2xyz[3][3])
> +{
> + double i[3][3], sr, sg, sb, zw;
> +
> + rgb2xyz[0][0] = coeffs->xr / coeffs->yr;
> + rgb2xyz[0][1] = coeffs->xg / coeffs->yg;
> + rgb2xyz[0][2] = coeffs->xb / coeffs->yb;
> + rgb2xyz[1][0] = rgb2xyz[1][1] = rgb2xyz[1][2] = 1.0;
> + rgb2xyz[2][0] = (1.0 - coeffs->xr - coeffs->yr) / coeffs->yr;
> + rgb2xyz[2][1] = (1.0 - coeffs->xg - coeffs->yg) / coeffs->yg;
> + rgb2xyz[2][2] = (1.0 - coeffs->xb - coeffs->yb) / coeffs->yb;
> + invert_matrix3x3(rgb2xyz, i);
> + zw = 1.0 - wp->xw - wp->yw;
> + sr = i[0][0] * wp->xw + i[0][1] * wp->yw + i[0][2] * zw;
> + sg = i[1][0] * wp->xw + i[1][1] * wp->yw + i[1][2] * zw;
> + sb = i[2][0] * wp->xw + i[2][1] * wp->yw + i[2][2] * zw;
> + rgb2xyz[0][0] *= sr;
> + rgb2xyz[0][1] *= sg;
> + rgb2xyz[0][2] *= sb;
> + rgb2xyz[1][0] *= sr;
> + rgb2xyz[1][1] *= sg;
> + rgb2xyz[1][2] *= sb;
> + rgb2xyz[2][0] *= sr;
> + rgb2xyz[2][1] *= sg;
> + rgb2xyz[2][2] *= sb;
> +}
> diff --git a/libavfilter/colorspace_basic.h b/libavfilter/colorspace_basic.h
> new file mode 100644
> index 0000000..5647ca6
> --- /dev/null
> +++ b/libavfilter/colorspace_basic.h
> @@ -0,0 +1,40 @@
> +/*
> + * 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
> + */
> +
> +#ifndef AVFILTER_COLORSPACE_BASIC_H
> +#define AVFILTER_COLORSPACE_BASIC_H
> +
> +#include "libavutil/common.h"
> +
> +struct LumaCoefficients {
> + double cr, cg, cb;
> +};
> +
> +struct ColorPrimaries {
> + double xr, yr, xg, yg, xb, yb;
> +};
> +
> +struct WhitePoint {
> + double xw, yw;
> +};
> +
> +void invert_matrix3x3(const double in[3][3], double out[3][3]);
> +void mul3x3(double dst[3][3], const double src1[3][3], const double
> src2[3][3]);
> +void fill_rgb2xyz_table(const struct ColorPrimaries *coeffs,
> + const struct WhitePoint *wp, double rgb2xyz[3][3]);
> +#endif
> diff --git a/libavfilter/opencl/colorspace_basic.cl
> b/libavfilter/opencl/colorspace_basic.cl
> new file mode 100644
> index 0000000..ffd98c2
> --- /dev/null
> +++ b/libavfilter/opencl/colorspace_basic.cl
> @@ -0,0 +1,179 @@
> +/*
> + * 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
> + */
> +
> +#define ST2084_MAX_LUMINANCE 10000.0f
> +#define REFERENCE_WHITE 100.0f
> +constant const float ST2084_M1 = 0.1593017578125f;
> +constant const float ST2084_M2 = 78.84375f;
> +constant const float ST2084_C1 = 0.8359375f;
> +constant const float ST2084_C2 = 18.8515625f;
> +constant const float ST2084_C3 = 18.6875f;
> +
> +// TODO Move these colorspace matrix to .cpp files
what's .cpp files? is it porting from some cpp file?
> +__constant float yuv2rgb_bt2020[] = {
> + 1.0f, 0.0f, 1.4746f,
> + 1.0f, -0.16455f, -0.57135f,
> + 1.0f, 1.8814f, 0.0f
> +};
> +
> +__constant float yuv2rgb_bt709[] = {
> + 1.0f, 0.0f, 1.5748f,
> + 1.0f, -0.18732f, -0.46812f,
> + 1.0f, 1.8556f, 0.0f
> +};
> +
> +__constant float rgb2yuv_bt709[] = {
> + 0.2126f, 0.7152f, 0.0722f,
> + -0.11457f, -0.38543f, 0.5f,
> + 0.5f, -0.45415f, -0.04585f
> +};
> +
> +__constant float rgb2yuv_bt2020[] ={
> + 0.2627f, 0.678f, 0.0593f,
> + -0.1396f, -0.36037f, 0.5f,
> + 0.5f, -0.4598f, -0.0402f,
> +};
> +
> +
> +float get_luma_dst(float3 c) {
> + return luma_dst.x * c.x + luma_dst.y * c.y + luma_dst.z * c.z;
> +}
> +
> +float get_luma_src(float3 c) {
> + return luma_src.x * c.x + luma_src.y * c.y + luma_src.z * c.z;
> +}
> +
> +float eotf_st2084(float x) {
> + float p = pow(x, 1.0f / ST2084_M2);
> + float a = max(p -ST2084_C1, 0.0f);
> + float b = max(ST2084_C2 - ST2084_C3 * p, 1e-6f);
> + float c = pow(a / b, 1.0f / ST2084_M1);
> + return x > 0.0f ? c * ST2084_MAX_LUMINANCE / REFERENCE_WHITE : 0.0f;
> +}
> +
> +__constant const float HLG_A = 0.17883277f;
> +__constant const float HLG_B = 0.28466892f;
> +__constant const float HLG_C = 0.55991073f;
> +
> +// linearizer for HLG
> +float inverse_oetf_hlg(float x) {
> + float a = 4.0f * x * x;
> + float b = exp((x - HLG_C) / HLG_A) + HLG_B;
> + return x < 0.5f ? a : b;
> +}
> +
> +// delinearizer for HLG
> +float oetf_hlg(float x) {
> + float a = 0.5f * sqrt(x);
> + float b = HLG_A * log(x - HLG_B) + HLG_C;
> + return x <= 1.0f ? a : b;
> +}
> +
> +float3 ootf_hlg(float3 c) {
> + float luma = get_luma_src(c);
> + // assume a reference display with 1000 nits peak
> + float factor = 1000.0f / REFERENCE_WHITE * pow(luma, 0.2f) / pow(12.0f,
> 1.2f);
> + return c * factor;
> +}
> +
> +float3 inverse_ootf_hlg(float3 c) {
> + // assume a reference display with 1000 nits peak
> + c *= pow(12.0f, 1.2f) / (1000.0f / REFERENCE_WHITE);
> + c /= pow(get_luma_dst(c), 0.2f / 1.2f);
> + return c;
> +}
> +
> +float inverse_eotf_bt1886(float c) {
> + return c < 0.0f ? 0.0f : pow(c, 1.0f / 2.4f);
> +}
> +
> +float oetf_bt709(float c) {
> + c = c < 0.0f ? 0.0f : c;
> + float r1 = 4.5f * c;
> + float r2 = 1.099f * pow(c, 0.45f) - 0.099f;
> + return c < 0.018f ? r1 : r2;
> +}
> +float inverse_oetf_bt709(float c) {
> + float r1 = c / 4.5f;
> + float r2 = pow((c + 0.099f) / 1.099f, 1.0f / 0.45f);
> + return c < 0.081f ? r1 : r2;
> +}
> +
> +float3 yuv2rgb(float y, float u, float v) {
> +#ifdef FULL_RANGE_IN
> + u -= 0.5f; v -= 0.5f;
> +#else
> + y = (y * 255.0f - 16.0f) / 219.0f;
> + u = (u * 255.0f - 128.0f) / 224.0f;
> + v = (v * 255.0f - 128.0f) / 224.0f;
> +#endif
> + float r = y * rgb_matrix[0] + u * rgb_matrix[1] + v * rgb_matrix[2];
> + float g = y * rgb_matrix[3] + u * rgb_matrix[4] + v * rgb_matrix[5];
> + float b = y * rgb_matrix[6] + u * rgb_matrix[7] + v * rgb_matrix[8];
> + return (float3)(r, g, b);
> +}
> +
> +float3 yuv2lrgb(float3 yuv) {
> + float3 rgb = yuv2rgb(yuv.x, yuv.y, yuv.z);
> + float r = linearize(rgb.x);
> + float g = linearize(rgb.y);
> + float b = linearize(rgb.z);
> + return (float3)(r, g, b);
> +}
> +
> +float3 rgb2yuv(float r, float g, float b) {
> + float y = r*yuv_matrix[0] + g*yuv_matrix[1] + b*yuv_matrix[2];
> + float u = r*yuv_matrix[3] + g*yuv_matrix[4] + b*yuv_matrix[5];
> + float v = r*yuv_matrix[6] + g*yuv_matrix[7] + b*yuv_matrix[8];
> +#ifdef FULL_RANGE_OUT
> + u += 0.5f; v += 0.5f;
> +#else
> + y = (219.0f * y + 16.0f) / 255.0f;
> + u = (224.0f * u + 128.0f) / 255.0f;
> + v = (224.0f * v + 128.0f) / 255.0f;
> +#endif
> + return (float3)(y, u, v);
> +}
> +
> +float3 lrgb2yuv(float3 c) {
> + float r = delinearize(c.x);
> + float g = delinearize(c.y);
> + float b = delinearize(c.z);
> +
> + return rgb2yuv(r, g, b);
> +}
> +
> +float3 lrgb2lrgb(float3 c) {
> +#ifdef RGB2RGB_PASSTHROUGH
> + return c;
> +#else
> + float r = c.x, g = c.y, b = c.z;
> + float rr = rgb2rgb[0] * r + rgb2rgb[1] * g + rgb2rgb[2] * b;
> + float gg = rgb2rgb[3] * r + rgb2rgb[4] * g + rgb2rgb[5] * b;
> + float bb = rgb2rgb[6] * r + rgb2rgb[7] * g + rgb2rgb[8] * b;
> + return (float3)(rr, gg, bb);
> +#endif
> +}
> +
> +float3 ootf(float3 c) {
> + return ootf_impl(c);
> +}
> +
> +float3 inverse_ootf(float3 c) {
> + return inverse_ootf_impl(c);
> +}
> diff --git a/libavfilter/opencl/tonemap.cl b/libavfilter/opencl/tonemap.cl
> new file mode 100644
> index 0000000..03cf3e2
> --- /dev/null
> +++ b/libavfilter/opencl/tonemap.cl
> @@ -0,0 +1,258 @@
> +/*
> + * 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
> + */
> +
> +#define REFERENCE_WHITE 100.0f
> +extern float3 lrgb2yuv(float3);
> +extern float3 yuv2lrgb(float3);
> +extern float3 lrgb2lrgb(float3);
> +extern float get_luma_src(float3);
> +extern float get_luma_dst(float3);
> +extern float3 ootf(float3);
> +extern float3 inverse_ootf(float3);
> +struct detection_result {
> + float peak;
> + float average;
> +};
> +
> +float hable_f(float in) {
> + float a = 0.15f, b = 0.50f, c = 0.10f, d = 0.20f, e = 0.02f, f = 0.30f;
> + return (in * (in * a + b * c) + d * e) / (in * (in * a + b) + d * f) - e
> / f;
> +}
> +
> +float direct(float s, float peak) {
> + return s;
> +}
> +
> +float linear(float s, float peak) {
> + return s * tone_param / peak;
> +}
> +
> +float gamma(float s, float peak) {
> + float p = s > 0.05f ? s /peak : 0.05f / peak;
> + float v = pow(p, 1.0f / tone_param);
> + return s > 0.05f ? v : (s * v /0.05f);
> +}
> +
> +float clip(float s, float peak) {
> + return clamp(s * tone_param, 0.0f, 1.0f);
> +}
> +
> +float reinhard(float s, float peak) {
> + return s / (s + tone_param) * (peak + tone_param) / peak;
> +}
> +
> +float hable(float s, float peak) {
> + return hable_f(s)/hable_f(peak);
> +}
> +
> +float mobius(float s, float peak) {
> + float j = tone_param;
> + float a, b;
> +
> + if (s <= j)
> + return s;
> +
> + a = -j * j * (peak - 1.0f) / (j * j - 2.0f * j + peak);
> + b = (j * j - 2.0f * j * peak + peak) / max(peak - 1.0f, 1e-6f);
> +
> + return (b * b + 2.0f * b * j + j * j) / (b - a) * (s + a) / (s + b);
> +}
> +
> +// detect peak/average signal of a frame, the algorithm was ported from:
> +// libplacebo (https://github.com/haasn/libplacebo)
> +struct detection_result
> +detect_peak_avg(global uint *util_buf, __local uint *sum_wg,
> + float signal, float peak) {
> + global uint *avg_buf = util_buf;
> + global uint *peak_buf = avg_buf + DETECTION_FRAMES + 1;
> + global uint *counter_wg_p = peak_buf + DETECTION_FRAMES + 1;
> + global uint *max_total_p = counter_wg_p + 1;
> + global uint *avg_total_p = max_total_p + 1;
> + global uint *frame_idx_p = avg_total_p + 1;
> + global uint *scene_frame_num_p = frame_idx_p + 1;
> +
> + uint frame_idx = *frame_idx_p;
> + uint scene_frame_num = *scene_frame_num_p;
> +
> + size_t lidx = get_local_id(0);
> + size_t lidy = get_local_id(1);
> + size_t lsizex = get_local_size(0);
> + size_t lsizey = get_local_size(1);
> + uint num_wg = get_num_groups(0) * get_num_groups(1);
> + size_t group_idx = get_group_id(0);
> + size_t group_idy = get_group_id(1);
> + struct detection_result r = {peak, sdr_avg};
> + *sum_wg = 0;
> + barrier(CLK_LOCAL_MEM_FENCE);
> +
> + // update workgroup sum
> + atomic_add(sum_wg, (uint)(signal * REFERENCE_WHITE));
> + barrier(CLK_LOCAL_MEM_FENCE);
> +
> + // update frame peak/avg using work-group-average.
> + if (lidx == 0 && lidy == 0) {
> + uint avg_wg = *sum_wg / (lsizex * lsizey);
> + atomic_max(&peak_buf[frame_idx], avg_wg);
> + atomic_add(&avg_buf[frame_idx], avg_wg);
> + }
> +
> + if (scene_frame_num > 0) {
> + float peak = (float)*max_total_p / (REFERENCE_WHITE *
> scene_frame_num);
> + float avg = (float)*avg_total_p / (REFERENCE_WHITE *
> scene_frame_num);
> + r.peak = max(1.0f, peak);
> + r.average = max(0.25f, avg);
> + }
> +
> + if (lidx == 0 && lidy == 0 && atomic_add(counter_wg_p, 1) == num_wg - 1)
> {
> + *counter_wg_p = 0;
> + avg_buf[frame_idx] /= num_wg;
> +
> + if (scene_threshold > 0.0f) {
> + uint cur_max = peak_buf[frame_idx];
> + uint cur_avg = avg_buf[frame_idx];
> + int diff = (int)(scene_frame_num * cur_avg) - (int)*avg_total_p;
> +
> + if (abs(diff) > scene_frame_num * scene_threshold *
> REFERENCE_WHITE) {
> + for (uint i = 0; i < DETECTION_FRAMES + 1; i++)
> + avg_buf[i] = 0;
> + for (uint i = 0; i < DETECTION_FRAMES + 1; i++)
> + peak_buf[i] = 0;
> + *avg_total_p = *max_total_p = 0;
> + *scene_frame_num_p = 0;
> + avg_buf[frame_idx] = cur_avg;
> + peak_buf[frame_idx] = cur_max;
> + }
> + }
> + uint next = (frame_idx + 1) % (DETECTION_FRAMES + 1);
> + // add current frame, subtract next frame
> + *max_total_p += peak_buf[frame_idx] - peak_buf[next];
> + *avg_total_p += avg_buf[frame_idx] - avg_buf[next];
> + // reset next frame
> + peak_buf[next] = avg_buf[next] = 0;
> + *frame_idx_p = next;
> + *scene_frame_num_p = min(*scene_frame_num_p + 1,
> (uint)DETECTION_FRAMES);
> + }
> + return r;
> +}
> +
> +__constant const float desat_param = 0.5f;
> +__constant const float dst_peak = 1.0f;
> +
> +float3 map_one_pixel_rgb(float3 rgb, float peak, float average) {
> + float sig = max(max(rgb.x, max(rgb.y, rgb.z)), 1e-6f);
> + // de-saturate
> + if (desat_param > 0.0f) {
> + float luma = get_luma_dst(rgb);
> + float base = 0.18f * dst_peak;
> + float coeff = max(sig - base, 1e-6f) / max(sig, 1e-6f);
> + coeff = native_powr(coeff, 10.0f / desat_param);
> + rgb = mix(rgb, (float3)luma, (float3)coeff);
> + sig = mix(sig, luma, coeff);
> + }
> +
> + float sig_old = sig;
> + float slope = min(1.0f, sdr_avg / average);
> + sig *= slope;
> + peak *= slope;
> +
> + sig = TONE_FUNC(sig, peak);
> + rgb *= (sig/sig_old);
> + return rgb;
> +}
> +// map from source space YUV to destination space RGB
> +float3 map_to_dst_space_from_yuv(float3 yuv) {
> + float3 c = yuv2lrgb(yuv);
> + c = ootf(c);
> + c = lrgb2lrgb(c);
> + return c;
> +}
> +
> +// convert from rgb to yuv, with possible inverse-ootf
> +float3 convert_to_yuv(float3 c) {
> + c = inverse_ootf(c);
> + return lrgb2yuv(c);
> +}
> +
> +__kernel void tonemap(__write_only image2d_t dst1,
> + __write_only image2d_t dst2,
> + __read_only image2d_t src1,
> + __read_only image2d_t src2,
> +#ifdef THIRD_PLANE
> + __write_only image2d_t dst3,
> + __read_only image2d_t src3,
> +#endif
> + global uint *util_buf,
> + float peak
> + )
> +{
> + __local uint sum_wg;
> + const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
> + CLK_FILTER_NEAREST);
> + int xi = get_global_id(0);
> + int yi = get_global_id(1);
> + // each work item process four pixels
> + int x = 2 * xi;
> + int y = 2 * yi;
> +
> + float y0 = read_imagef(src1, sampler, (int2)(x, y)).x;
> + float y1 = read_imagef(src1, sampler, (int2)(x + 1, y)).x;
> + float y2 = read_imagef(src1, sampler, (int2)(x, y + 1)).x;
> + float y3 = read_imagef(src1, sampler, (int2)(x + 1, y + 1)).x;
> +#ifdef THIRD_PLANE
> + float u = read_imagef(src2, sampler, (int2)(xi, yi)).x;
> + float v = read_imagef(src3, sampler, (int2)(xi, yi)).x;
> + float2 uv = (float2)(u, v);
> +#else
> + float2 uv = read_imagef(src2, sampler, (int2)(xi, yi)).xy;
> +#endif
> +
> + float3 c0 = map_to_dst_space_from_yuv((float3)(y0, uv.x, uv.y));
> + float3 c1 = map_to_dst_space_from_yuv((float3)(y1, uv.x, uv.y));
> + float3 c2 = map_to_dst_space_from_yuv((float3)(y2, uv.x, uv.y));
> + float3 c3 = map_to_dst_space_from_yuv((float3)(y3, uv.x, uv.y));
> +
> + float sig0 = max(c0.x, max(c0.y, c0.z));
> + float sig1 = max(c1.x, max(c1.y, c1.z));
> + float sig2 = max(c2.x, max(c2.y, c2.z));
> + float sig3 = max(c3.x, max(c3.y, c3.z));
> + float sig = max(sig0, max(sig1, max(sig2, sig3)));
> +
> + struct detection_result r = detect_peak_avg(util_buf, &sum_wg, sig,
> peak);
> +
> + float3 c0_old = c0, c1_old = c1, c2_old = c2;
> + c0 = map_one_pixel_rgb(c0, r.peak, r.average);
> + c1 = map_one_pixel_rgb(c1, r.peak, r.average);
> + c2 = map_one_pixel_rgb(c2, r.peak, r.average);
> + c3 = map_one_pixel_rgb(c3, r.peak, r.average);
> +
> + float3 yuv0 = convert_to_yuv(c0);
> + float3 yuv1 = convert_to_yuv(c1);
> + float3 yuv2 = convert_to_yuv(c2);
> + float3 yuv3 = convert_to_yuv(c3);
> +
> + write_imagef(dst1, (int2)(x, y), (float4)(yuv0.x, 0.0f, 0.0f, 1.0f));
> + write_imagef(dst1, (int2)(x+1, y), (float4)(yuv1.x, 0.0f, 0.0f, 1.0f));
> + write_imagef(dst1, (int2)(x, y+1), (float4)(yuv2.x, 0.0f, 0.0f, 1.0f));
> + write_imagef(dst1, (int2)(x+1, y+1), (float4)(yuv3.x, 0.0f, 0.0f, 1.0f));
> +#ifdef THIRD_PLANE
> + write_imagef(dst2, (int2)(xi, yi), (float4)(yuv0.y, 0.0f, 0.0f, 1.0f));
> + write_imagef(dst3, (int2)(xi, yi), (float4)(yuv0.z, 0.0f, 0.0f, 1.0f));
> +#else
> + write_imagef(dst2, (int2)(xi, yi), (float4)(yuv0.y, yuv0.z, 0.0f, 1.0f));
> +#endif
> +}
> diff --git a/libavfilter/opencl_source.h b/libavfilter/opencl_source.h
> index 4bb9969..c5b3f37 100644
> --- a/libavfilter/opencl_source.h
> +++ b/libavfilter/opencl_source.h
> @@ -21,7 +21,9 @@
>
> extern const char *ff_opencl_source_avgblur;
> extern const char *ff_opencl_source_convolution;
> +extern const char *ff_opencl_source_colorspace_basic;
Need to follow alphabetizing convention
> extern const char *ff_opencl_source_overlay;
> +extern const char *ff_opencl_source_tonemap;
> extern const char *ff_opencl_source_unsharp;
>
> #endif /* AVFILTER_OPENCL_SOURCE_H */
> diff --git a/libavfilter/vf_tonemap_opencl.c b/libavfilter/vf_tonemap_opencl.c
> new file mode 100644
> index 0000000..e2311e0
> --- /dev/null
> +++ b/libavfilter/vf_tonemap_opencl.c
> @@ -0,0 +1,560 @@
> +/*
> + * 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
> + */
> +#include <float.h>
> +
> +#include "libavutil/bprint.h"
> +#include "libavutil/common.h"
> +#include "libavutil/imgutils.h"
> +#include "libavutil/mastering_display_metadata.h"
> +#include "libavutil/mem.h"
> +#include "libavutil/opt.h"
> +#include "libavutil/pixdesc.h"
> +
> +#include "avfilter.h"
> +#include "internal.h"
> +#include "opencl.h"
> +#include "opencl_source.h"
> +#include "video.h"
> +#include "colorspace_basic.h"
> +
> +#define DETECTION_FRAMES 63
> +#define REFERENCE_WHITE 100.0f
> +
> +enum TonemapAlgorithm {
> + TONEMAP_NONE,
> + TONEMAP_LINEAR,
> + TONEMAP_GAMMA,
> + TONEMAP_CLIP,
> + TONEMAP_REINHARD,
> + TONEMAP_HABLE,
> + TONEMAP_MOBIUS,
> + TONEMAP_MAX,
> +};
> +
> +typedef struct TonemapOpenCLContext {
> + OpenCLFilterContext ocf;
> +
> + enum AVColorSpace colorspace, colorspace_in, colorspace_out;
> + enum AVColorTransferCharacteristic trc, trc_in, trc_out;
> + enum AVColorPrimaries primaries, primaries_in, primaries_out;
> + enum AVColorRange range, range_in, range_out;
> +
> + enum TonemapAlgorithm tonemap;
> + enum AVPixelFormat format;
> + double peak;
> + double param;
> + int initialised;
> + cl_kernel kernel;
> + cl_command_queue command_queue;
> + cl_mem util_mem;
> + DECLARE_ALIGNED(64, int32_t, util_buf)[2 * DETECTION_FRAMES + 7];
> +} TonemapOpenCLContext;
> +
> +const char *yuv_coff[AVCOL_SPC_NB] = {
> + [AVCOL_SPC_BT709] = "rgb2yuv_bt709",
> + [AVCOL_SPC_BT2020_NCL] = "rgb2yuv_bt2020",
> +};
> +
> +const char *rgb_coff[AVCOL_SPC_NB] = {
> + [AVCOL_SPC_BT709] = "yuv2rgb_bt709",
> + [AVCOL_SPC_BT2020_NCL] = "yuv2rgb_bt2020",
> +};
> +
> +const char *linearize_funcs[AVCOL_TRC_NB] = {
> + [AVCOL_TRC_SMPTE2084] = "eotf_st2084",
> + [AVCOL_TRC_ARIB_STD_B67] = "inverse_oetf_hlg",
> +};
> +
> +const char *ootf_funcs[AVCOL_TRC_NB] = {
> + [AVCOL_TRC_ARIB_STD_B67] = "ootf_hlg",
> + [AVCOL_TRC_SMPTE2084] = "",
> +};
> +
> +const char *inverse_ootf_funcs[AVCOL_TRC_NB] = {
> + [AVCOL_TRC_ARIB_STD_B67] = "inverse_ootf_hlg",
> + [AVCOL_TRC_SMPTE2084] = "",
> +};
> +
> +const char *delinearize_funcs[AVCOL_TRC_NB] = {
> + [AVCOL_TRC_BT709] = "inverse_eotf_bt1886",
> + [AVCOL_TRC_BT2020_10] = "inverse_eotf_bt1886",
> +};
> +
> +static const struct LumaCoefficients luma_coefficients[AVCOL_SPC_NB] = {
> + [AVCOL_SPC_BT709] = { 0.2126, 0.7152, 0.0722 },
> + [AVCOL_SPC_BT2020_NCL] = { 0.2627, 0.6780, 0.0593 },
> +};
> +
> +struct ColorPrimaries primaries_table[AVCOL_PRI_NB] = {
> + [AVCOL_PRI_BT709] = { 0.640, 0.330, 0.300, 0.600, 0.150, 0.060 },
> + [AVCOL_PRI_BT2020] = { 0.708, 0.292, 0.170, 0.797, 0.131, 0.046 },
> +};
> +
> +struct WhitePoint whitepoint_table[AVCOL_PRI_NB] = {
> + [AVCOL_PRI_BT709] = { 0.3127, 0.3290 },
> + [AVCOL_PRI_BT2020] = { 0.3127, 0.3290 },
> +};
> +
> +const char *tonemap_func[TONEMAP_MAX] = {
> + [TONEMAP_NONE] = "direct",
> + [TONEMAP_LINEAR] = "linear",
> + [TONEMAP_GAMMA] = "gamma",
> + [TONEMAP_CLIP] = "clip",
> + [TONEMAP_REINHARD] = "reinhard",
> + [TONEMAP_HABLE] = "hable",
> + [TONEMAP_MOBIUS] = "mobius",
> +};
> +
> +static void get_rgb2rgb_matrix(enum AVColorPrimaries in, enum
> AVColorPrimaries out,
> + double rgb2rgb[3][3]) {
> + double rgb2xyz[3][3], xyz2rgb[3][3];
> +
> + fill_rgb2xyz_table(&primaries_table[out], &whitepoint_table[out],
> rgb2xyz);
> + invert_matrix3x3(rgb2xyz, xyz2rgb);
> + fill_rgb2xyz_table(&primaries_table[in], &whitepoint_table[in], rgb2xyz);
> + mul3x3(rgb2rgb, rgb2xyz, xyz2rgb);
> +}
> +
> +#define OPENCL_SOURCE_NB 3
> +// Average light level for SDR signals. This is equal to a signal level of
> 0.5
> +// under a typical presentation gamma of about 2.0.
> +static const float sdr_avg = 0.25f;
> +static const float scene_threshold = 0.2f;
> +
> +static int tonemap_opencl_init(AVFilterContext *avctx)
> +{
> + TonemapOpenCLContext *ctx = avctx->priv;
> + int rgb2rgb_passthrough = 1;
> + double rgb2rgb[3][3];
> + struct LumaCoefficients luma_src, luma_dst;
> + cl_int cle;
> + int err;
> + AVBPrint header;
> + const char *opencl_sources[OPENCL_SOURCE_NB];
> +
> + av_bprint_init(&header, 1024, AV_BPRINT_SIZE_AUTOMATIC);
> +
> + switch(ctx->tonemap) {
> + case TONEMAP_GAMMA:
> + if (isnan(ctx->param))
> + ctx->param = 1.8f;
> + break;
> + case TONEMAP_REINHARD:
> + if (!isnan(ctx->param))
> + ctx->param = (1.0f - ctx->param) / ctx->param;
> + break;
> + case TONEMAP_MOBIUS:
> + if (isnan(ctx->param))
> + ctx->param = 0.3f;
> + break;
> + }
> +
> + if (isnan(ctx->param))
> + ctx->param = 1.0f;
> +
> + av_bprintf(&header, "__constant const float tone_param = %.4ff;\n",
> + ctx->param);
> + av_bprintf(&header, "__constant const float sdr_avg = %.4ff;\n",
> sdr_avg);
> + av_bprintf(&header, "__constant const float scene_threshold = %.4ff;\n",
> + scene_threshold);
> + av_bprintf(&header, "#define TONE_FUNC %s\n",
> tonemap_func[ctx->tonemap]);
> + av_bprintf(&header, "#define DETECTION_FRAMES %d\n", DETECTION_FRAMES);
> +
> + if (ctx->primaries_out != ctx->primaries_in) {
> + get_rgb2rgb_matrix(ctx->primaries_in, ctx->primaries_out, rgb2rgb);
> + rgb2rgb_passthrough = 0;
> + }
> + if (ctx->range_in == AVCOL_RANGE_JPEG)
> + av_bprintf(&header, "#define FULL_RANGE_IN\n");
> +
> + if (ctx->range_out == AVCOL_RANGE_JPEG)
> + av_bprintf(&header, "#define FULL_RANGE_OUT\n");
> +
> + if (rgb2rgb_passthrough)
> + av_bprintf(&header, "#define RGB2RGB_PASSTHROUGH\n");
> + else {
> + av_bprintf(&header, "__constant float rgb2rgb[9] = {\n");
> + av_bprintf(&header, " %.4ff, %.4ff, %.4ff,\n",
> + rgb2rgb[0][0], rgb2rgb[0][1], rgb2rgb[0][2]);
> + av_bprintf(&header, " %.4ff, %.4ff, %.4ff,\n",
> + rgb2rgb[1][0], rgb2rgb[1][1], rgb2rgb[1][2]);
> + av_bprintf(&header, " %.4ff, %.4ff, %.4ff};\n",
> + rgb2rgb[2][0], rgb2rgb[2][1], rgb2rgb[2][2]);
> + }
> +
> + av_bprintf(&header, "#define rgb_matrix %s\n",
> + rgb_coff[ctx->colorspace_in]);
> + av_bprintf(&header, "#define yuv_matrix %s\n",
> + yuv_coff[ctx->colorspace_out]);
> +
> + luma_src = luma_coefficients[ctx->colorspace_in];
> + luma_dst = luma_coefficients[ctx->colorspace_out];
> + av_bprintf(&header, "constant float3 luma_src = {%.4ff, %.4ff,
> %.4ff};\n",
> + luma_src.cr, luma_src.cg, luma_src.cb);
> + av_bprintf(&header, "constant float3 luma_dst = {%.4ff, %.4ff,
> %.4ff};\n",
> + luma_dst.cr, luma_dst.cg, luma_dst.cb);
> +
> + av_bprintf(&header, "#define linearize %s\n",
> linearize_funcs[ctx->trc_in]);
> + av_bprintf(&header, "#define delinearize %s\n",
> + delinearize_funcs[ctx->trc_out]);
> +
> + av_bprintf(&header, "#define ootf_impl %s\n", ootf_funcs[ctx->trc_in]);
> + av_bprintf(&header, "#define inverse_ootf_impl %s\n",
> + inverse_ootf_funcs[ctx->trc_in]);
> +
> +
> + opencl_sources[0] = header.str;
> + opencl_sources[1] = ff_opencl_source_tonemap;
> + opencl_sources[2] = ff_opencl_source_colorspace_basic;
> + err = ff_opencl_filter_load_program(avctx, opencl_sources,
> OPENCL_SOURCE_NB);
> +
> + av_bprint_finalize(&header, NULL);
> + if (err < 0)
> + goto fail;
> +
> + ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
> + ctx->ocf.hwctx->device_id,
> + 0, &cle);
> + if (!ctx->command_queue) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to create OpenCL "
> + "command queue: %d.\n", cle);
> + err = AVERROR(EIO);
> + goto fail;
> + }
> +
> + ctx->kernel = clCreateKernel(ctx->ocf.program, "tonemap", &cle);
> + if (!ctx->kernel) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
> + err = AVERROR(EIO);
> + goto fail;
> + }
> +
> + ctx->util_mem = clCreateBuffer(ctx->ocf.hwctx->context,
> + CL_MEM_USE_HOST_PTR |
> + CL_MEM_HOST_NO_ACCESS,
> + sizeof(ctx->util_buf), ctx->util_buf,
> &cle);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to create util buffer: %d.\n",
> cle);
> + err = AVERROR(EIO);
> + goto fail;
> + }
> +
> + ctx->initialised = 1;
> + return 0;
> +
> +fail:
> + if (ctx->util_mem)
> + clReleaseMemObject(ctx->util_mem);
> + if (ctx->command_queue)
> + clReleaseCommandQueue(ctx->command_queue);
> + if (ctx->kernel)
> + clReleaseKernel(ctx->kernel);
> + return err;
> +}
> +
> +static int tonemap_opencl_config_output(AVFilterLink *outlink)
> +{
> + AVFilterContext *avctx = outlink->src;
> + TonemapOpenCLContext *s = avctx->priv;
> + int ret;
> + s->ocf.output_format = s->format == AV_PIX_FMT_NONE ? AV_PIX_FMT_NV12 :
> s->format;
> + ret = ff_opencl_filter_config_output(outlink);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int launch_kernel(AVFilterContext *avctx, cl_kernel kernel,
> + AVFrame *output, AVFrame *input, float peak) {
> + TonemapOpenCLContext *ctx = avctx->priv;
> + int err = AVERROR(ENOSYS);
> + size_t global_work[2];
> + size_t local_work[2];
> + cl_int cle;
> +
> + cle = clSetKernelArg(kernel, 0, sizeof(cl_mem), &output->data[0]);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
> + "destination image 1st plane: %d.\n", cle);
> + return AVERROR(EINVAL);
> + }
> +
> + cle = clSetKernelArg(kernel, 1, sizeof(cl_mem), &output->data[1]);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
> + "destination image 2nd plane: %d.\n", cle);
> + return AVERROR(EINVAL);
> + }
> +
> + cle = clSetKernelArg(kernel, 2, sizeof(cl_mem), &input->data[0]);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
> + "source image 1st plane: %d.\n", cle);
> + return AVERROR(EINVAL);
> + }
> +
> + cle = clSetKernelArg(kernel, 3, sizeof(cl_mem), &input->data[1]);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
> + "source image 2nd plane: %d.\n", cle);
> + return AVERROR(EINVAL);
> + }
> +
> + cle = clSetKernelArg(kernel, 4, sizeof(cl_mem), &ctx->util_mem);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
> + "source image 2nd plane: %d.\n", cle);
> + return AVERROR(EINVAL);
> + }
> +
> + cle = clSetKernelArg(kernel, 5, sizeof(cl_float), &peak);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
> + "peak luma: %d.\n", cle);
> + return AVERROR(EINVAL);
> + }
> +
> + local_work[0] = 16;
> + local_work[1] = 16;
> + // Note the work size based on uv plane, as we process a 2x2 quad in one
> workitem
> + err = ff_opencl_filter_work_size_from_image(avctx, global_work, output,
> + 1, 16);
> + if (err < 0)
> + return err;
> +
> + cle = clEnqueueNDRangeKernel(ctx->command_queue, kernel, 2, NULL,
> + global_work, local_work,
> + 0, NULL, NULL);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
> + cle);
> + return AVERROR(EIO);
> + }
> + return 0;
> +}
> +
> +static double determine_signal_peak(AVFrame *in)
> +{
> + AVFrameSideData *sd = av_frame_get_side_data(in,
> AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
> + double peak = 0;
> +
> + if (sd) {
> + AVContentLightMetadata *clm = (AVContentLightMetadata *)sd->data;
> + peak = clm->MaxCLL / REFERENCE_WHITE;
> + }
> +
> + sd = av_frame_get_side_data(in,
> AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
> + if (!peak && sd) {
> + AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata
> *)sd->data;
> + if (metadata->has_luminance)
> + peak = av_q2d(metadata->max_luminance) / REFERENCE_WHITE;
> + }
> +
> + // if not SMPTE2084, we would assume HLG
> + if (!peak)
> + peak = in->color_trc == AVCOL_TRC_SMPTE2084 ? 100.0f : 12.0f;
> +
> + return peak;
> +}
> +
> +static int tonemap_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
> +{
> + AVFilterContext *avctx = inlink->dst;
> + AVFilterLink *outlink = avctx->outputs[0];
> + TonemapOpenCLContext *ctx = avctx->priv;
> + AVFrame *output = NULL;
> + cl_int cle;
> + int err;
> + double peak = ctx->peak;
> +
> + AVHWFramesContext *input_frames_ctx =
> + (AVHWFramesContext*)input->hw_frames_ctx->data;
> +
> + av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
> + av_get_pix_fmt_name(input->format),
> + input->width, input->height, input->pts);
> +
> + if (!input->hw_frames_ctx)
> + return AVERROR(EINVAL);
> +
> + output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
> + if (!output) {
> + err = AVERROR(ENOMEM);
> + goto fail;
> + }
> +
> + err = av_frame_copy_props(output, input);
> + if (err < 0)
> + goto fail;
> +
> + if (!peak)
> + peak = determine_signal_peak(input);
> +
> + if (ctx->trc != -1)
> + output->color_trc = ctx->trc;
> + if (ctx->primaries != -1)
> + output->color_primaries = ctx->primaries;
> + if (ctx->colorspace != -1)
> + output->colorspace = ctx->colorspace;
> + if (ctx->range != -1)
> + output->color_range = ctx->range;
> +
> + ctx->trc_in = input->color_trc;
> + ctx->trc_out = output->color_trc;
> + ctx->colorspace_in = input->colorspace;
> + ctx->colorspace_out = output->colorspace;
> + ctx->primaries_in = input->color_primaries;
> + ctx->primaries_out = output->color_primaries;
> + ctx->range_in = input->color_range;
> + ctx->range_out = output->color_range;
> +
> + if (!ctx->initialised) {
> + err = tonemap_opencl_init(avctx);
> + if (err < 0)
> + goto fail;
> + }
> +
> + switch(input_frames_ctx->sw_format) {
> + case AV_PIX_FMT_P010:
> + err = launch_kernel(avctx, ctx->kernel, output, input, peak);
> + if (err < 0) goto fail;
> + break;
> + default:
> + av_log(ctx, AV_LOG_ERROR, "unsupported format in tonemap_opencl.\n");
> + err = AVERROR(ENOSYS);
> + goto fail;
> + }
> +
> + cle = clFinish(ctx->command_queue);
> + if (cle != CL_SUCCESS) {
> + av_log(avctx, AV_LOG_ERROR, "Failed to finish command queue: %d.\n",
> + cle);
> + err = AVERROR(EIO);
> + goto fail;
> + }
> +
> + av_frame_free(&input);
> +
> + av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
> + av_get_pix_fmt_name(output->format),
> + output->width, output->height, output->pts);
> +
> + return ff_filter_frame(outlink, output);
> +
> +fail:
> + clFinish(ctx->command_queue);
> + av_frame_free(&input);
> + av_frame_free(&output);
> + return err;
> +}
> +
> +static av_cold void tonemap_opencl_uninit(AVFilterContext *avctx)
> +{
> + TonemapOpenCLContext *ctx = avctx->priv;
> + cl_int cle;
> +
> + if (ctx->util_mem)
> + clReleaseMemObject(ctx->util_mem);
> + if (ctx->kernel) {
> + cle = clReleaseKernel(ctx->kernel);
> + if (cle != CL_SUCCESS)
> + av_log(avctx, AV_LOG_ERROR, "Failed to release "
> + "kernel: %d.\n", cle);
> + }
> +
> + if (ctx->command_queue) {
> + cle = clReleaseCommandQueue(ctx->command_queue);
> + if (cle != CL_SUCCESS)
> + av_log(avctx, AV_LOG_ERROR, "Failed to release "
> + "command queue: %d.\n", cle);
> + }
> +
> + ff_opencl_filter_uninit(avctx);
> +}
> +
> +#define OFFSET(x) offsetof(TonemapOpenCLContext, x)
> +#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
> +static const AVOption tonemap_opencl_options[] = {
> + { "tonemap", "tonemap algorithm selection", OFFSET(tonemap),
> AV_OPT_TYPE_INT, {.i64 = TONEMAP_NONE}, TONEMAP_NONE, TONEMAP_MAX - 1, FLAGS,
> "tonemap" },
> + { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_NONE},
> 0, 0, FLAGS, "tonemap" },
> + { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_LINEAR},
> 0, 0, FLAGS, "tonemap" },
> + { "gamma", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_GAMMA},
> 0, 0, FLAGS, "tonemap" },
> + { "clip", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_CLIP},
> 0, 0, FLAGS, "tonemap" },
> + { "reinhard", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_REINHARD},
> 0, 0, FLAGS, "tonemap" },
> + { "hable", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_HABLE},
> 0, 0, FLAGS, "tonemap" },
> + { "mobius", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_MOBIUS},
> 0, 0, FLAGS, "tonemap" },
> + { "transfer", "set transfer characteristic", OFFSET(trc),
> AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
> + { "t", "set transfer characteristic", OFFSET(trc),
> AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
> + { "bt709", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_TRC_BT709}, 0, 0, FLAGS, "transfer" },
> + { "bt2020", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_TRC_BT2020_10}, 0, 0, FLAGS, "transfer" },
> + { "matrix", "set colorspace matrix", OFFSET(colorspace),
> AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
> + { "m", "set colorspace matrix", OFFSET(colorspace),
> AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
> + { "bt709", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_SPC_BT709}, 0, 0, FLAGS, "matrix" },
> + { "bt2020", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_SPC_BT2020_NCL}, 0, 0, FLAGS, "matrix" },
> + { "primaries", "set color primaries", OFFSET(primaries),
> AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
> + { "p", "set color primaries", OFFSET(primaries),
> AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
> + { "bt709", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_PRI_BT709}, 0, 0, FLAGS, "primaries" },
> + { "bt2020", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_PRI_BT2020}, 0, 0, FLAGS, "primaries" },
> + { "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT,
> {.i64 = -1}, -1, INT_MAX, FLAGS, "range" },
> + { "r", "set color range", OFFSET(range), AV_OPT_TYPE_INT,
> {.i64 = -1}, -1, INT_MAX, FLAGS, "range" },
> + { "tv", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_RANGE_MPEG}, 0, 0, FLAGS, "range" },
> + { "pc", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range" },
> + { "limited", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_RANGE_MPEG}, 0, 0, FLAGS, "range" },
> + { "full", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range" },
> + { "format", "output pixel format", OFFSET(format), AV_OPT_TYPE_INT,
> {.i64 = AV_PIX_FMT_NONE}, AV_PIX_FMT_NONE, AV_PIX_FMT_GBRAP12LE, FLAGS, "fmt"
> },
> + { "nv12", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AV_PIX_FMT_NV12}, 0, 0, FLAGS, "fmt" },
> + { "p010", 0, 0, AV_OPT_TYPE_CONST,
> {.i64 = AV_PIX_FMT_P010}, 0, 0, FLAGS, "fmt" },
> + { "peak", "signal peak override", OFFSET(peak), AV_OPT_TYPE_DOUBLE,
> {.dbl = 0}, 0, DBL_MAX, FLAGS },
> + { "param", "tonemap parameter", OFFSET(param), AV_OPT_TYPE_DOUBLE,
> {.dbl = NAN}, DBL_MIN, DBL_MAX, FLAGS },
> + { NULL }
> +};
> +
> +AVFILTER_DEFINE_CLASS(tonemap_opencl);
> +
> +static const AVFilterPad tonemap_opencl_inputs[] = {
> + {
> + .name = "default",
> + .type = AVMEDIA_TYPE_VIDEO,
> + .filter_frame = &tonemap_opencl_filter_frame,
> + .config_props = &ff_opencl_filter_config_input,
> + },
> + { NULL }
> +};
> +
> +static const AVFilterPad tonemap_opencl_outputs[] = {
> + {
> + .name = "default",
> + .type = AVMEDIA_TYPE_VIDEO,
> + .config_props = &tonemap_opencl_config_output,
> + },
> + { NULL }
> +};
> +
> +AVFilter ff_vf_tonemap_opencl = {
> + .name = "tonemap_opencl",
> + .description = NULL_IF_CONFIG_SMALL("perform HDR to SDR conversion
> with tonemapping"),
> + .priv_size = sizeof(TonemapOpenCLContext),
> + .priv_class = &tonemap_opencl_class,
> + .init = &ff_opencl_filter_init,
> + .uninit = &tonemap_opencl_uninit,
> + .query_formats = &ff_opencl_filter_query_formats,
> + .inputs = tonemap_opencl_inputs,
> + .outputs = tonemap_opencl_outputs,
> + .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
> +};
> --
> 2.7.4
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
--
=======================================
Pixelworks
Room 301-303 No. 88,Lane 887 Zuchongzhi Road, Zhangjiang Hi-tech Park,
Shanghai 201203, China
Best Regards,
Jun zhao/赵军
+++++++++++++++++++++++++++++++++++++++
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