381 lines
14 KiB
C
381 lines
14 KiB
C
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/*
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* Copyright (c) 2017 Ronald S. Bultje <rsbultje@gmail.com>
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* Copyright (c) 2017 Ashish Pratap Singh <ashk43712@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Calculate the VMAF between two input videos.
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*/
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#include <pthread.h>
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#include <libvmaf.h>
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#include "libavutil/avstring.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "drawutils.h"
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#include "formats.h"
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#include "framesync.h"
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#include "internal.h"
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#include "video.h"
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typedef struct LIBVMAFContext {
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const AVClass *class;
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FFFrameSync fs;
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const AVPixFmtDescriptor *desc;
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int width;
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int height;
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double vmaf_score;
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int vmaf_thread_created;
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pthread_t vmaf_thread;
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pthread_mutex_t lock;
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pthread_cond_t cond;
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int eof;
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AVFrame *gmain;
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AVFrame *gref;
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int frame_set;
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char *model_path;
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char *log_path;
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char *log_fmt;
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int disable_clip;
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int disable_avx;
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int enable_transform;
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int phone_model;
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int psnr;
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int ssim;
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int ms_ssim;
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char *pool;
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int n_threads;
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int n_subsample;
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int enable_conf_interval;
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int error;
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} LIBVMAFContext;
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#define OFFSET(x) offsetof(LIBVMAFContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption libvmaf_options[] = {
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{"model_path", "Set the model to be used for computing vmaf.", OFFSET(model_path), AV_OPT_TYPE_STRING, {.str="/usr/local/share/model/vmaf_v0.6.1.pkl"}, 0, 1, FLAGS},
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{"log_path", "Set the file path to be used to store logs.", OFFSET(log_path), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 1, FLAGS},
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{"log_fmt", "Set the format of the log (xml or json).", OFFSET(log_fmt), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 1, FLAGS},
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{"enable_transform", "Enables transform for computing vmaf.", OFFSET(enable_transform), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"phone_model", "Invokes the phone model that will generate higher VMAF scores.", OFFSET(phone_model), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"psnr", "Enables computing psnr along with vmaf.", OFFSET(psnr), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"ssim", "Enables computing ssim along with vmaf.", OFFSET(ssim), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"ms_ssim", "Enables computing ms-ssim along with vmaf.", OFFSET(ms_ssim), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"pool", "Set the pool method to be used for computing vmaf.", OFFSET(pool), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 1, FLAGS},
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{"n_threads", "Set number of threads to be used when computing vmaf.", OFFSET(n_threads), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT_MAX, FLAGS},
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{"n_subsample", "Set interval for frame subsampling used when computing vmaf.", OFFSET(n_subsample), AV_OPT_TYPE_INT, {.i64=1}, 1, UINT_MAX, FLAGS},
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{"enable_conf_interval", "Enables confidence interval.", OFFSET(enable_conf_interval), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{ NULL }
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};
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FRAMESYNC_DEFINE_CLASS(libvmaf, LIBVMAFContext, fs);
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#define read_frame_fn(type, bits) \
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static int read_frame_##bits##bit(float *ref_data, float *main_data, \
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float *temp_data, int stride, void *ctx) \
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{ \
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LIBVMAFContext *s = (LIBVMAFContext *) ctx; \
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int ret; \
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\
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pthread_mutex_lock(&s->lock); \
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\
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while (!s->frame_set && !s->eof) { \
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pthread_cond_wait(&s->cond, &s->lock); \
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} \
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\
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if (s->frame_set) { \
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int ref_stride = s->gref->linesize[0]; \
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int main_stride = s->gmain->linesize[0]; \
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\
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const type *ref_ptr = (const type *) s->gref->data[0]; \
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const type *main_ptr = (const type *) s->gmain->data[0]; \
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\
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float *ptr = ref_data; \
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float factor = 1.f / (1 << (bits - 8)); \
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\
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int h = s->height; \
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int w = s->width; \
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\
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int i,j; \
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\
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for (i = 0; i < h; i++) { \
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for ( j = 0; j < w; j++) { \
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ptr[j] = ref_ptr[j] * factor; \
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} \
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ref_ptr += ref_stride / sizeof(*ref_ptr); \
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ptr += stride / sizeof(*ptr); \
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} \
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\
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ptr = main_data; \
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\
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for (i = 0; i < h; i++) { \
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for (j = 0; j < w; j++) { \
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ptr[j] = main_ptr[j] * factor; \
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} \
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main_ptr += main_stride / sizeof(*main_ptr); \
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ptr += stride / sizeof(*ptr); \
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} \
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} \
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\
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ret = !s->frame_set; \
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\
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av_frame_unref(s->gref); \
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av_frame_unref(s->gmain); \
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s->frame_set = 0; \
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\
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pthread_cond_signal(&s->cond); \
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pthread_mutex_unlock(&s->lock); \
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\
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if (ret) { \
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return 2; \
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} \
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\
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return 0; \
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}
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read_frame_fn(uint8_t, 8);
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read_frame_fn(uint16_t, 10);
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static void compute_vmaf_score(LIBVMAFContext *s)
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{
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int (*read_frame)(float *ref_data, float *main_data, float *temp_data,
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int stride, void *ctx);
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char *format;
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if (s->desc->comp[0].depth <= 8) {
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read_frame = read_frame_8bit;
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} else {
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read_frame = read_frame_10bit;
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}
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format = (char *) s->desc->name;
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s->error = compute_vmaf(&s->vmaf_score, format, s->width, s->height,
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read_frame, s, s->model_path, s->log_path,
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s->log_fmt, 0, 0, s->enable_transform,
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s->phone_model, s->psnr, s->ssim,
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s->ms_ssim, s->pool,
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s->n_threads, s->n_subsample, s->enable_conf_interval);
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}
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static void *call_vmaf(void *ctx)
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{
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LIBVMAFContext *s = (LIBVMAFContext *) ctx;
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compute_vmaf_score(s);
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if (!s->error) {
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av_log(ctx, AV_LOG_INFO, "VMAF score: %f\n",s->vmaf_score);
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} else {
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pthread_mutex_lock(&s->lock);
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pthread_cond_signal(&s->cond);
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pthread_mutex_unlock(&s->lock);
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}
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pthread_exit(NULL);
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return NULL;
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}
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static int do_vmaf(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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LIBVMAFContext *s = ctx->priv;
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AVFrame *master, *ref;
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int ret;
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ret = ff_framesync_dualinput_get(fs, &master, &ref);
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if (ret < 0)
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return ret;
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if (!ref)
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return ff_filter_frame(ctx->outputs[0], master);
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pthread_mutex_lock(&s->lock);
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while (s->frame_set && !s->error) {
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pthread_cond_wait(&s->cond, &s->lock);
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}
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if (s->error) {
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av_log(ctx, AV_LOG_ERROR,
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"libvmaf encountered an error, check log for details\n");
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pthread_mutex_unlock(&s->lock);
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return AVERROR(EINVAL);
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}
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av_frame_ref(s->gref, ref);
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av_frame_ref(s->gmain, master);
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s->frame_set = 1;
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pthread_cond_signal(&s->cond);
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pthread_mutex_unlock(&s->lock);
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return ff_filter_frame(ctx->outputs[0], master);
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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LIBVMAFContext *s = ctx->priv;
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s->gref = av_frame_alloc();
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s->gmain = av_frame_alloc();
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if (!s->gref || !s->gmain)
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return AVERROR(ENOMEM);
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s->error = 0;
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s->vmaf_thread_created = 0;
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pthread_mutex_init(&s->lock, NULL);
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pthread_cond_init (&s->cond, NULL);
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s->fs.on_event = do_vmaf;
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return 0;
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}
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUV422P10LE, AV_PIX_FMT_YUV420P10LE,
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AV_PIX_FMT_NONE
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};
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AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
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if (!fmts_list)
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return AVERROR(ENOMEM);
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return ff_set_common_formats(ctx, fmts_list);
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}
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static int config_input_ref(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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LIBVMAFContext *s = ctx->priv;
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int th;
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if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
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ctx->inputs[0]->h != ctx->inputs[1]->h) {
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av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
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return AVERROR(EINVAL);
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}
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if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
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av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
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return AVERROR(EINVAL);
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}
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s->desc = av_pix_fmt_desc_get(inlink->format);
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s->width = ctx->inputs[0]->w;
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s->height = ctx->inputs[0]->h;
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th = pthread_create(&s->vmaf_thread, NULL, call_vmaf, (void *) s);
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if (th) {
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av_log(ctx, AV_LOG_ERROR, "Thread creation failed.\n");
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return AVERROR(EINVAL);
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}
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s->vmaf_thread_created = 1;
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return 0;
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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LIBVMAFContext *s = ctx->priv;
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AVFilterLink *mainlink = ctx->inputs[0];
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int ret;
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ret = ff_framesync_init_dualinput(&s->fs, ctx);
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if (ret < 0)
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return ret;
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outlink->w = mainlink->w;
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outlink->h = mainlink->h;
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outlink->time_base = mainlink->time_base;
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outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
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outlink->frame_rate = mainlink->frame_rate;
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if ((ret = ff_framesync_configure(&s->fs)) < 0)
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return ret;
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return 0;
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}
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static int activate(AVFilterContext *ctx)
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{
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LIBVMAFContext *s = ctx->priv;
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return ff_framesync_activate(&s->fs);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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LIBVMAFContext *s = ctx->priv;
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ff_framesync_uninit(&s->fs);
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pthread_mutex_lock(&s->lock);
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s->eof = 1;
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pthread_cond_signal(&s->cond);
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pthread_mutex_unlock(&s->lock);
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if (s->vmaf_thread_created)
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{
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pthread_join(s->vmaf_thread, NULL);
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s->vmaf_thread_created = 0;
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}
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av_frame_free(&s->gref);
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av_frame_free(&s->gmain);
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pthread_mutex_destroy(&s->lock);
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pthread_cond_destroy(&s->cond);
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}
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static const AVFilterPad libvmaf_inputs[] = {
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{
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.name = "main",
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.type = AVMEDIA_TYPE_VIDEO,
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},{
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.name = "reference",
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.type = AVMEDIA_TYPE_VIDEO,
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||
|
|
.config_props = config_input_ref,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
static const AVFilterPad libvmaf_outputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.config_props = config_output,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
AVFilter ff_vf_libvmaf = {
|
||
|
|
.name = "libvmaf",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Calculate the VMAF between two video streams."),
|
||
|
|
.preinit = libvmaf_framesync_preinit,
|
||
|
|
.init = init,
|
||
|
|
.uninit = uninit,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.activate = activate,
|
||
|
|
.priv_size = sizeof(LIBVMAFContext),
|
||
|
|
.priv_class = &libvmaf_class,
|
||
|
|
.inputs = libvmaf_inputs,
|
||
|
|
.outputs = libvmaf_outputs,
|
||
|
|
};
|