/*
* 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/common.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(sizeof(uint32_t *) * (2 * step + 1));
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 = FF_CEIL_RSHIFT(link->w, unsharp->hsub);
int ch = FF_CEIL_RSHIFT(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: %s\n", av_opencl_errstr(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 = FF_CEIL_RSHIFT(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);
}