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lavfi/unsharp: add opencl unsharp filter

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
highgod0401 2013-04-25 19:32:13 +08:00 committed by Michael Niedermayer
parent f31247cf47
commit cd134963e8
9 changed files with 592 additions and 38 deletions
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5
doc/filters.texi
View File

@ -6197,6 +6197,11 @@ Negative values will blur the input video, while positive values will
sharpen it, a value of zero will disable the effect.
Default value is 0.0.
@item opencl
If set to 1, specify using OpenCL capabilities, only available if
FFmpeg was configured with @code{--enable-opencl}. Default value is 0.
@end table
All parameters are optional and default to the equivalent of the

2
libavfilter/Makefile
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@ -149,7 +149,7 @@ OBJS-$(CONFIG_NOFORMAT_FILTER) += vf_format.o
OBJS-$(CONFIG_NOISE_FILTER) += vf_noise.o
OBJS-$(CONFIG_NULL_FILTER) += vf_null.o
OBJS-$(CONFIG_OCV_FILTER) += vf_libopencv.o
OBJS-$(CONFIG_OPENCL) += deshake_opencl.o
OBJS-$(CONFIG_OPENCL) += deshake_opencl.o unsharp_opencl.o
OBJS-$(CONFIG_OVERLAY_FILTER) += vf_overlay.o
OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
OBJS-$(CONFIG_PERMS_FILTER) += f_perms.o

2
libavfilter/opencl_allkernels.c
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@ -22,6 +22,7 @@
#if CONFIG_OPENCL
#include "libavutil/opencl.h"
#include "deshake_kernel.h"
#include "unsharp_kernel.h"
#endif
#define OPENCL_REGISTER_KERNEL_CODE(X, x) \
@ -35,5 +36,6 @@ void ff_opencl_register_filter_kernel_code_all(void)
{
#if CONFIG_OPENCL
OPENCL_REGISTER_KERNEL_CODE(DESHAKE, deshake);
OPENCL_REGISTER_KERNEL_CODE(UNSHARP, unsharp);
#endif
}

78
libavfilter/unsharp.h Normal file
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@ -0,0 +1,78 @@
/*
* Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
*
* 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_UNSHARP_H
#define AVFILTER_UNSHARP_H
#include "config.h"
#include "avfilter.h"
#if CONFIG_OPENCL
#include "libavutil/opencl.h"
#endif
#define MIN_MATRIX_SIZE 3
#define MAX_MATRIX_SIZE 63
/* right-shift and round-up */
#define SHIFTUP(x,shift) (-((-(x))>>(shift)))
#if CONFIG_OPENCL
typedef struct {
cl_mem cl_luma_mask;
cl_mem cl_chroma_mask;
int in_plane_size[8];
int out_plane_size[8];
int plane_num;
cl_mem cl_inbuf;
size_t cl_inbuf_size;
cl_mem cl_outbuf;
size_t cl_outbuf_size;
AVOpenCLKernelEnv kernel_env;
} UnsharpOpenclContext;
#endif
typedef struct UnsharpFilterParam {
int msize_x; ///< matrix width
int msize_y; ///< matrix height
int amount; ///< effect amount
int steps_x; ///< horizontal step count
int steps_y; ///< vertical step count
int scalebits; ///< bits to shift pixel
int32_t halfscale; ///< amount to add to pixel
uint32_t *sc[MAX_MATRIX_SIZE - 1]; ///< finite state machine storage
} UnsharpFilterParam;
typedef struct {
const AVClass *class;
int lmsize_x, lmsize_y, cmsize_x, cmsize_y;
float lamount, camount;
UnsharpFilterParam luma; ///< luma parameters (width, height, amount)
UnsharpFilterParam chroma; ///< chroma parameters (width, height, amount)
int hsub, vsub;
int opencl;
#if CONFIG_OPENCL
UnsharpOpenclContext opencl_ctx;
#endif
int (* apply_unsharp)(AVFilterContext *ctx, AVFrame *in, AVFrame *out);
} UnsharpContext;
#endif /* AVFILTER_UNSHARP_H */

137
libavfilter/unsharp_kernel.h Normal file
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@ -0,0 +1,137 @@
/*
* Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
*
* 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_UNSHARP_KERNEL_H
#define AVFILTER_UNSHARP_KERNEL_H
#include "libavutil/opencl.h"
const char *ff_kernel_unsharp_opencl = AV_OPENCL_KERNEL(
inline unsigned char clip_uint8(int a)
{
if (a & (~0xFF))
return (-a)>>31;
else
return a;
}
kernel void unsharp(global unsigned char *src,
global unsigned char *dst,
const global unsigned int *mask_lu,
const global unsigned int *mask_ch,
int amount_lu,
int amount_ch,
int step_x_lu,
int step_y_lu,
int step_x_ch,
int step_y_ch,
int scalebits_lu,
int scalebits_ch,
int halfscale_lu,
int halfscale_ch,
int src_stride_lu,
int src_stride_ch,
int dst_stride_lu,
int dst_stride_ch,
int height,
int width,
int ch,
int cw)
{
global unsigned char *dst_y = dst;
global unsigned char *dst_u = dst_y + height * dst_stride_lu;
global unsigned char *dst_v = dst_u + ch * dst_stride_ch;
global unsigned char *src_y = src;
global unsigned char *src_u = src_y + height * src_stride_lu;
global unsigned char *src_v = src_u + ch * src_stride_ch;
global unsigned char *temp_dst;
global unsigned char *temp_src;
const global unsigned int *temp_mask;
int global_id = get_global_id(0);
int i, j, x, y, temp_src_stride, temp_dst_stride, temp_height, temp_width, temp_steps_x, temp_steps_y,
temp_amount, temp_scalebits, temp_halfscale, sum, idx_x, idx_y, temp, res;
if (global_id < width * height) {
y = global_id / width;
x = global_id % width;
temp_dst = dst_y;
temp_src = src_y;
temp_src_stride = src_stride_lu;
temp_dst_stride = dst_stride_lu;
temp_height = height;
temp_width = width;
temp_steps_x = step_x_lu;
temp_steps_y = step_y_lu;
temp_mask = mask_lu;
temp_amount = amount_lu;
temp_scalebits = scalebits_lu;
temp_halfscale = halfscale_lu;
} else if ((global_id >= width * height) && (global_id < width * height + ch * cw)) {
y = (global_id - width * height) / cw;
x = (global_id - width * height) % cw;
temp_dst = dst_u;
temp_src = src_u;
temp_src_stride = src_stride_ch;
temp_dst_stride = dst_stride_ch;
temp_height = ch;
temp_width = cw;
temp_steps_x = step_x_ch;
temp_steps_y = step_y_ch;
temp_mask = mask_ch;
temp_amount = amount_ch;
temp_scalebits = scalebits_ch;
temp_halfscale = halfscale_ch;
} else {
y = (global_id - width * height - ch * cw) / cw;
x = (global_id - width * height - ch * cw) % cw;
temp_dst = dst_v;
temp_src = src_v;
temp_src_stride = src_stride_ch;
temp_dst_stride = dst_stride_ch;
temp_height = ch;
temp_width = cw;
temp_steps_x = step_x_ch;
temp_steps_y = step_y_ch;
temp_mask = mask_ch;
temp_amount = amount_ch;
temp_scalebits = scalebits_ch;
temp_halfscale = halfscale_ch;
}
if (temp_amount) {
sum = 0;
for (j = 0; j <= 2 * temp_steps_y; j++) {
idx_y = (y - temp_steps_y + j) <= 0 ? 0 : (y - temp_steps_y + j) >= temp_height ? temp_height-1 : y - temp_steps_y + j;
for (i = 0; i <= 2 * temp_steps_x; i++) {
idx_x = (x - temp_steps_x + i) <= 0 ? 0 : (x - temp_steps_x + i) >= temp_width ? temp_width-1 : x - temp_steps_x + i;
sum += temp_mask[i + j * (2 * temp_steps_x + 1)] * temp_src[idx_x + idx_y * temp_src_stride];
}
}
temp = (int)temp_src[x + y * temp_src_stride];
res = temp + (((temp - (int)((sum + temp_halfscale) >> temp_scalebits)) * temp_amount) >> 16);
temp_dst[x + y * temp_dst_stride] = clip_uint8(res);
} else {
temp_dst[x + y * temp_dst_stride] = temp_src[x + y * temp_src_stride];
}
}
);
#endif /* AVFILTER_UNSHARP_KERNEL_H */

282
libavfilter/unsharp_opencl.c Normal file
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@ -0,0 +1,282 @@
/*
* Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
*
* 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
* unsharp input video
*/
#include "unsharp_opencl.h"
#include "libavutil/opencl_internal.h"
#define PLANE_NUM 3
static inline void add_mask_counter(uint32_t *dst, uint32_t *counter1, uint32_t *counter2, int len)
{
int i;
for (i = 0; i < len; i++) {
dst[i] = counter1[i] + counter2[i];
}
}
static int compute_mask(int step, uint32_t *mask)
{
int i, z, ret = 0;
int counter_size = sizeof(uint32_t) * (2 * step + 1);
uint32_t *temp1_counter, *temp2_counter, **counter;
temp1_counter = av_mallocz(counter_size);
if (!temp1_counter) {
ret = AVERROR(ENOMEM);
goto end;
}
temp2_counter = av_mallocz(counter_size);
if (!temp2_counter) {
ret = AVERROR(ENOMEM);
goto end;
}
counter = av_mallocz(counter_size);
if (!counter) {
ret = AVERROR(ENOMEM);
goto end;
}
for (i = 0; i < 2 * step + 1; i++) {
counter[i] = av_mallocz(counter_size);
if (!counter[i]) {
ret = AVERROR(ENOMEM);
goto end;
}
}
for (i = 0; i < 2 * step + 1; i++) {
memset(temp1_counter, 0, counter_size);
temp1_counter[i] = 1;
for (z = 0; z < step * 2; z += 2) {
add_mask_counter(temp2_counter, counter[z], temp1_counter, step * 2);
memcpy(counter[z], temp1_counter, counter_size);
add_mask_counter(temp1_counter, counter[z + 1], temp2_counter, step * 2);
memcpy(counter[z + 1], temp2_counter, counter_size);
}
}
memcpy(mask, temp1_counter, counter_size);
end:
av_freep(&temp1_counter);
av_freep(&temp2_counter);
for (i = 0; i < 2 * step + 1; i++) {
av_freep(&counter[i]);
}
av_freep(&counter);
return ret;
}
static int compute_mask_matrix(cl_mem cl_mask_matrix, int step_x, int step_y)
{
int i, j, ret = 0;
uint32_t *mask_matrix, *mask_x, *mask_y;
size_t size_matrix = sizeof(uint32_t) * (2 * step_x + 1) * (2 * step_y + 1);
mask_x = av_mallocz(sizeof(uint32_t) * (2 * step_x + 1));
if (!mask_x) {
ret = AVERROR(ENOMEM);
goto end;
}
mask_y = av_mallocz(sizeof(uint32_t) * (2 * step_y + 1));
if (!mask_y) {
ret = AVERROR(ENOMEM);
goto end;
}
mask_matrix = av_mallocz(size_matrix);
if (!mask_matrix) {
ret = AVERROR(ENOMEM);
goto end;
}
ret = compute_mask(step_x, mask_x);
if (ret < 0)
goto end;
ret = compute_mask(step_y, mask_y);
if (ret < 0)
goto end;
for (j = 0; j < 2 * step_y + 1; j++) {
for (i = 0; i < 2 * step_x + 1; i++) {
mask_matrix[i + j * (2 * step_x + 1)] = mask_y[j] * mask_x[i];
}
}
ret = av_opencl_buffer_write(cl_mask_matrix, (uint8_t *)mask_matrix, size_matrix);
end:
av_freep(&mask_x);
av_freep(&mask_y);
av_freep(&mask_matrix);
return ret;
}
static int generate_mask(AVFilterContext *ctx)
{
UnsharpContext *unsharp = ctx->priv;
int i, ret = 0, step_x[2], step_y[2];
cl_mem mask_matrix[2];
mask_matrix[0] = unsharp->opencl_ctx.cl_luma_mask;
mask_matrix[1] = unsharp->opencl_ctx.cl_chroma_mask;
step_x[0] = unsharp->luma.steps_x;
step_x[1] = unsharp->chroma.steps_x;
step_y[0] = unsharp->luma.steps_y;
step_y[1] = unsharp->chroma.steps_y;
if (!mask_matrix[0] || !mask_matrix[1]) {
av_log(ctx, AV_LOG_ERROR, "Luma mask and chroma mask should not be NULL\n");
return AVERROR(EINVAL);
}
for (i = 0; i < 2; i++) {
ret = compute_mask_matrix(mask_matrix[i], step_x[i], step_y[i]);
if (ret < 0)
return ret;
}
return ret;
}
int ff_opencl_apply_unsharp(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
{
int ret;
AVFilterLink *link = ctx->inputs[0];
UnsharpContext *unsharp = ctx->priv;
cl_int status;
int cw = SHIFTUP(link->w, unsharp->hsub);
int ch = SHIFTUP(link->h, unsharp->vsub);
const size_t global_work_size = link->w * link->h + 2 * ch * cw;
FFOpenclParam opencl_param = {0};
opencl_param.ctx = ctx;
opencl_param.kernel = unsharp->opencl_ctx.kernel_env.kernel;
ret = ff_opencl_set_parameter(&opencl_param,
FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_inbuf),
FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_outbuf),
FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_luma_mask),
FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_chroma_mask),
FF_OPENCL_PARAM_INFO(unsharp->luma.amount),
FF_OPENCL_PARAM_INFO(unsharp->chroma.amount),
FF_OPENCL_PARAM_INFO(unsharp->luma.steps_x),
FF_OPENCL_PARAM_INFO(unsharp->luma.steps_y),
FF_OPENCL_PARAM_INFO(unsharp->chroma.steps_x),
FF_OPENCL_PARAM_INFO(unsharp->chroma.steps_y),
FF_OPENCL_PARAM_INFO(unsharp->luma.scalebits),
FF_OPENCL_PARAM_INFO(unsharp->chroma.scalebits),
FF_OPENCL_PARAM_INFO(unsharp->luma.halfscale),
FF_OPENCL_PARAM_INFO(unsharp->chroma.halfscale),
FF_OPENCL_PARAM_INFO(in->linesize[0]),
FF_OPENCL_PARAM_INFO(in->linesize[1]),
FF_OPENCL_PARAM_INFO(out->linesize[0]),
FF_OPENCL_PARAM_INFO(out->linesize[1]),
FF_OPENCL_PARAM_INFO(link->h),
FF_OPENCL_PARAM_INFO(link->w),
FF_OPENCL_PARAM_INFO(ch),
FF_OPENCL_PARAM_INFO(cw),
NULL);
if (ret < 0)
return ret;
status = clEnqueueNDRangeKernel(unsharp->opencl_ctx.kernel_env.command_queue,
unsharp->opencl_ctx.kernel_env.kernel, 1, NULL,
&global_work_size, NULL, 0, NULL, NULL);
if (status != CL_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "OpenCL run kernel error occurred: %d\n", status);
return AVERROR_EXTERNAL;
}
clFinish(unsharp->opencl_ctx.kernel_env.command_queue);
return av_opencl_buffer_read_image(out->data, unsharp->opencl_ctx.out_plane_size,
unsharp->opencl_ctx.plane_num, unsharp->opencl_ctx.cl_outbuf,
unsharp->opencl_ctx.cl_outbuf_size);
}
int ff_opencl_unsharp_init(AVFilterContext *ctx)
{
int ret = 0;
UnsharpContext *unsharp = ctx->priv;
ret = av_opencl_init(NULL);
if (ret < 0)
return ret;
ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_luma_mask,
sizeof(uint32_t) * (2 * unsharp->luma.steps_x + 1) * (2 * unsharp->luma.steps_y + 1),
CL_MEM_READ_ONLY, NULL);
if (ret < 0)
return ret;
ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_chroma_mask,
sizeof(uint32_t) * (2 * unsharp->chroma.steps_x + 1) * (2 * unsharp->chroma.steps_y + 1),
CL_MEM_READ_ONLY, NULL);
if (ret < 0)
return ret;
ret = generate_mask(ctx);
if (ret < 0)
return ret;
unsharp->opencl_ctx.plane_num = PLANE_NUM;
if (!unsharp->opencl_ctx.kernel_env.kernel) {
ret = av_opencl_create_kernel(&unsharp->opencl_ctx.kernel_env, "unsharp");
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "OpenCL failed to create kernel with name 'unsharp'\n");
return ret;
}
}
return ret;
}
void ff_opencl_unsharp_uninit(AVFilterContext *ctx)
{
UnsharpContext *unsharp = ctx->priv;
av_opencl_buffer_release(&unsharp->opencl_ctx.cl_inbuf);
av_opencl_buffer_release(&unsharp->opencl_ctx.cl_outbuf);
av_opencl_buffer_release(&unsharp->opencl_ctx.cl_luma_mask);
av_opencl_buffer_release(&unsharp->opencl_ctx.cl_chroma_mask);
av_opencl_release_kernel(&unsharp->opencl_ctx.kernel_env);
av_opencl_uninit();
}
int ff_opencl_unsharp_process_inout_buf(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
{
int ret = 0;
AVFilterLink *link = ctx->inputs[0];
UnsharpContext *unsharp = ctx->priv;
int ch = SHIFTUP(link->h, unsharp->vsub);
if ((!unsharp->opencl_ctx.cl_inbuf) || (!unsharp->opencl_ctx.cl_outbuf)) {
unsharp->opencl_ctx.in_plane_size[0] = (in->linesize[0] * in->height);
unsharp->opencl_ctx.in_plane_size[1] = (in->linesize[1] * ch);
unsharp->opencl_ctx.in_plane_size[2] = (in->linesize[2] * ch);
unsharp->opencl_ctx.out_plane_size[0] = (out->linesize[0] * out->height);
unsharp->opencl_ctx.out_plane_size[1] = (out->linesize[1] * ch);
unsharp->opencl_ctx.out_plane_size[2] = (out->linesize[2] * ch);
unsharp->opencl_ctx.cl_inbuf_size = unsharp->opencl_ctx.in_plane_size[0] +
unsharp->opencl_ctx.in_plane_size[1] +
unsharp->opencl_ctx.in_plane_size[2];
unsharp->opencl_ctx.cl_outbuf_size = unsharp->opencl_ctx.out_plane_size[0] +
unsharp->opencl_ctx.out_plane_size[1] +
unsharp->opencl_ctx.out_plane_size[2];
if (!unsharp->opencl_ctx.cl_inbuf) {
ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_inbuf,
unsharp->opencl_ctx.cl_inbuf_size,
CL_MEM_READ_ONLY, NULL);
if (ret < 0)
return ret;
}
if (!unsharp->opencl_ctx.cl_outbuf) {
ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_outbuf,
unsharp->opencl_ctx.cl_outbuf_size,
CL_MEM_READ_WRITE, NULL);
if (ret < 0)
return ret;
}
}
return av_opencl_buffer_write_image(unsharp->opencl_ctx.cl_inbuf,
unsharp->opencl_ctx.cl_inbuf_size,
0, in->data, unsharp->opencl_ctx.in_plane_size,
unsharp->opencl_ctx.plane_num);
}

34
libavfilter/unsharp_opencl.h Normal file
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@ -0,0 +1,34 @@
/*
* Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
*
* 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_UNSHARP_OPENCL_H
#define AVFILTER_UNSHARP_OPENCL_H
#include "unsharp.h"
int ff_opencl_unsharp_init(AVFilterContext *ctx);
void ff_opencl_unsharp_uninit(AVFilterContext *ctx);
int ff_opencl_unsharp_process_inout_buf(AVFilterContext *ctx, AVFrame *in, AVFrame *out);
int ff_opencl_apply_unsharp(AVFilterContext *ctx, AVFrame *in, AVFrame *out);
#endif /* AVFILTER_UNSHARP_OPENCL_H */

2
libavfilter/version.h
View File

@ -30,7 +30,7 @@
#define LIBAVFILTER_VERSION_MAJOR 3
#define LIBAVFILTER_VERSION_MINOR 60
#define LIBAVFILTER_VERSION_MICRO 101
#define LIBAVFILTER_VERSION_MICRO 102
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \

88
libavfilter/vf_unsharp.c
View File

@ -46,36 +46,12 @@
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#define MIN_MATRIX_SIZE 3
#define MAX_MATRIX_SIZE 63
/* right-shift and round-up */
#define SHIFTUP(x,shift) (-((-(x))>>(shift)))
typedef struct FilterParam {
int msize_x; ///< matrix width
int msize_y; ///< matrix height
int amount; ///< effect amount
int steps_x; ///< horizontal step count
int steps_y; ///< vertical step count
int scalebits; ///< bits to shift pixel
int32_t halfscale; ///< amount to add to pixel
uint32_t *sc[MAX_MATRIX_SIZE - 1]; ///< finite state machine storage
} FilterParam;
typedef struct {
const AVClass *class;
int lmsize_x, lmsize_y, cmsize_x, cmsize_y;
float lamount, camount;
FilterParam luma; ///< luma parameters (width, height, amount)
FilterParam chroma; ///< chroma parameters (width, height, amount)
int hsub, vsub;
} UnsharpContext;
#include "unsharp.h"
#include "unsharp_opencl.h"
static void apply_unsharp( uint8_t *dst, int dst_stride,
const uint8_t *src, int src_stride,
int width, int height, FilterParam *fp)
int width, int height, UnsharpFilterParam *fp)
{
uint32_t **sc = fp->sc;
uint32_t sr[MAX_MATRIX_SIZE - 1], tmp1, tmp2;
@ -131,7 +107,25 @@ static void apply_unsharp( uint8_t *dst, int dst_stride,
}
}
static void set_filter_param(FilterParam *fp, int msize_x, int msize_y, float amount)
static int apply_unsharp_c(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
{
AVFilterLink *inlink = ctx->inputs[0];
UnsharpContext *unsharp = ctx->priv;
int i, plane_w[3], plane_h[3];
UnsharpFilterParam *fp[3];
plane_w[0] = inlink->w;
plane_w[1] = plane_w[2] = SHIFTUP(inlink->w, unsharp->hsub);
plane_h[0] = inlink->h;
plane_h[1] = plane_h[2] = SHIFTUP(inlink->h, unsharp->vsub);
fp[0] = &unsharp->luma;
fp[1] = fp[2] = &unsharp->chroma;
for (i = 0; i < 3; i++) {
apply_unsharp(out->data[i], out->linesize[i], in->data[i], in->linesize[i], plane_w[i], plane_h[i], fp[i]);
}
return 0;
}
static void set_filter_param(UnsharpFilterParam *fp, int msize_x, int msize_y, float amount)
{
fp->msize_x = msize_x;
fp->msize_y = msize_y;
@ -145,12 +139,24 @@ static void set_filter_param(FilterParam *fp, int msize_x, int msize_y, float am
static av_cold int init(AVFilterContext *ctx)
{
int ret = 0;
UnsharpContext *unsharp = ctx->priv;
set_filter_param(&unsharp->luma, unsharp->lmsize_x, unsharp->lmsize_y, unsharp->lamount);
set_filter_param(&unsharp->chroma, unsharp->cmsize_x, unsharp->cmsize_y, unsharp->camount);
unsharp->apply_unsharp = apply_unsharp_c;
if (!CONFIG_OPENCL && unsharp->opencl) {
av_log(ctx, AV_LOG_ERROR, "OpenCL support was not enabled in this build, cannot be selected\n");
return AVERROR(EINVAL);
}
if (CONFIG_OPENCL && unsharp->opencl) {
unsharp->apply_unsharp = ff_opencl_apply_unsharp;
ret = ff_opencl_unsharp_init(ctx);
if (ret < 0)
return ret;
}
return 0;
}
@ -167,7 +173,7 @@ static int query_formats(AVFilterContext *ctx)
return 0;
}
static int init_filter_param(AVFilterContext *ctx, FilterParam *fp, const char *effect_type, int width)
static int init_filter_param(AVFilterContext *ctx, UnsharpFilterParam *fp, const char *effect_type, int width)
{
int z;
const char *effect = fp->amount == 0 ? "none" : fp->amount < 0 ? "blur" : "sharpen";
@ -208,7 +214,7 @@ static int config_props(AVFilterLink *link)
return 0;
}
static void free_filter_param(FilterParam *fp)
static void free_filter_param(UnsharpFilterParam *fp)
{
int z;
@ -220,6 +226,10 @@ static av_cold void uninit(AVFilterContext *ctx)
{
UnsharpContext *unsharp = ctx->priv;
if (CONFIG_OPENCL && unsharp->opencl) {
ff_opencl_unsharp_uninit(ctx);
}
free_filter_param(&unsharp->luma);
free_filter_param(&unsharp->chroma);
}
@ -229,8 +239,7 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
UnsharpContext *unsharp = link->dst->priv;
AVFilterLink *outlink = link->dst->outputs[0];
AVFrame *out;
int cw = SHIFTUP(link->w, unsharp->hsub);
int ch = SHIFTUP(link->h, unsharp->vsub);
int ret = 0;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
@ -238,12 +247,18 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
if (CONFIG_OPENCL && unsharp->opencl) {
ret = ff_opencl_unsharp_process_inout_buf(link->dst, in, out);
if (ret < 0)
goto end;
}
apply_unsharp(out->data[0], out->linesize[0], in->data[0], in->linesize[0], link->w, link->h, &unsharp->luma);
apply_unsharp(out->data[1], out->linesize[1], in->data[1], in->linesize[1], cw, ch, &unsharp->chroma);
apply_unsharp(out->data[2], out->linesize[2], in->data[2], in->linesize[2], cw, ch, &unsharp->chroma);
ret = unsharp->apply_unsharp(link->dst, in, out);
end:
av_frame_free(&in);
if (ret < 0)
return ret;
return ff_filter_frame(outlink, out);
}
@ -264,6 +279,7 @@ static const AVOption unsharp_options[] = {
{ "cy", "chroma matrix vertical size", OFFSET(cmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
{ "chroma_amount", "chroma effect strength", OFFSET(camount), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, -2, 5, FLAGS },
{ "ca", "chroma effect strength", OFFSET(camount), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, -2, 5, FLAGS },
{ "opencl", "use OpenCL filtering capabilities", OFFSET(opencl), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
{ NULL },
};