220 lines
7.9 KiB
C
220 lines
7.9 KiB
C
/*
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* Copyright (c) 2013 Georg Martius <georg dot martius at web dot de>
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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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#define DEFAULT_RESULT_NAME "transforms.trf"
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#include <vid.stab/libvidstab.h>
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "libavutil/imgutils.h"
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#include "avfilter.h"
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#include "internal.h"
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#include "vidstabutils.h"
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typedef struct {
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const AVClass *class;
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VSMotionDetect md;
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VSMotionDetectConfig conf;
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char *result;
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FILE *f;
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} StabData;
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#define OFFSET(x) offsetof(StabData, x)
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#define OFFSETC(x) (offsetof(StabData, conf)+offsetof(VSMotionDetectConfig, x))
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption vidstabdetect_options[] = {
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{"result", "path to the file used to write the transforms", OFFSET(result), AV_OPT_TYPE_STRING, {.str = DEFAULT_RESULT_NAME}, .flags = FLAGS},
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{"shakiness", "how shaky is the video and how quick is the camera?"
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" 1: little (fast) 10: very strong/quick (slow)", OFFSETC(shakiness), AV_OPT_TYPE_INT, {.i64 = 5}, 1, 10, FLAGS},
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{"accuracy", "(>=shakiness) 1: low 15: high (slow)", OFFSETC(accuracy), AV_OPT_TYPE_INT, {.i64 = 15}, 1, 15, FLAGS},
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{"stepsize", "region around minimum is scanned with 1 pixel resolution", OFFSETC(stepSize), AV_OPT_TYPE_INT, {.i64 = 6}, 1, 32, FLAGS},
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{"mincontrast", "below this contrast a field is discarded (0-1)", OFFSETC(contrastThreshold), AV_OPT_TYPE_DOUBLE, {.dbl = 0.25}, 0.0, 1.0, FLAGS},
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{"show", "0: draw nothing; 1,2: show fields and transforms", OFFSETC(show), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 2, FLAGS},
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{"tripod", "virtual tripod mode (if >0): motion is compared to a reference"
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" reference frame (frame # is the value)", OFFSETC(virtualTripod), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS},
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{NULL}
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};
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AVFILTER_DEFINE_CLASS(vidstabdetect);
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static av_cold int init(AVFilterContext *ctx)
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{
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StabData *sd = ctx->priv;
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ff_vs_init();
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sd->class = &vidstabdetect_class;
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av_log(ctx, AV_LOG_VERBOSE, "vidstabdetect filter: init %s\n", LIBVIDSTAB_VERSION);
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return 0;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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StabData *sd = ctx->priv;
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VSMotionDetect *md = &(sd->md);
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if (sd->f) {
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fclose(sd->f);
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sd->f = NULL;
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}
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vsMotionDetectionCleanup(md);
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}
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static int query_formats(AVFilterContext *ctx)
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{
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// If you add something here also add it in vidstabutils.c
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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_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_YUV440P, AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, AV_PIX_FMT_RGBA,
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AV_PIX_FMT_NONE
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};
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ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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return 0;
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}
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static int config_input(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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StabData *sd = ctx->priv;
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VSMotionDetect* md = &(sd->md);
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VSFrameInfo fi;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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vsFrameInfoInit(&fi, inlink->w, inlink->h,
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ff_av2vs_pixfmt(ctx, inlink->format));
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if (fi.bytesPerPixel != av_get_bits_per_pixel(desc)/8) {
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av_log(ctx, AV_LOG_ERROR, "pixel-format error: wrong bits/per/pixel, please report a BUG");
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return AVERROR(EINVAL);
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}
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if (fi.log2ChromaW != desc->log2_chroma_w) {
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av_log(ctx, AV_LOG_ERROR, "pixel-format error: log2_chroma_w, please report a BUG");
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return AVERROR(EINVAL);
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}
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if (fi.log2ChromaH != desc->log2_chroma_h) {
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av_log(ctx, AV_LOG_ERROR, "pixel-format error: log2_chroma_h, please report a BUG");
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return AVERROR(EINVAL);
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}
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// set values that are not initialized by the options
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sd->conf.algo = 1;
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sd->conf.modName = "vidstabdetect";
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if (vsMotionDetectInit(md, &sd->conf, &fi) != VS_OK) {
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av_log(ctx, AV_LOG_ERROR, "initialization of Motion Detection failed, please report a BUG");
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return AVERROR(EINVAL);
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}
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vsMotionDetectGetConfig(&sd->conf, md);
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av_log(ctx, AV_LOG_INFO, "Video stabilization settings (pass 1/2):\n");
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av_log(ctx, AV_LOG_INFO, " shakiness = %d\n", sd->conf.shakiness);
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av_log(ctx, AV_LOG_INFO, " accuracy = %d\n", sd->conf.accuracy);
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av_log(ctx, AV_LOG_INFO, " stepsize = %d\n", sd->conf.stepSize);
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av_log(ctx, AV_LOG_INFO, " mincontrast = %f\n", sd->conf.contrastThreshold);
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av_log(ctx, AV_LOG_INFO, " tripod = %d\n", sd->conf.virtualTripod);
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av_log(ctx, AV_LOG_INFO, " show = %d\n", sd->conf.show);
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av_log(ctx, AV_LOG_INFO, " result = %s\n", sd->result);
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sd->f = fopen(sd->result, "w");
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if (sd->f == NULL) {
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av_log(ctx, AV_LOG_ERROR, "cannot open transform file %s\n", sd->result);
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return AVERROR(EINVAL);
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} else {
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if (vsPrepareFile(md, sd->f) != VS_OK) {
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av_log(ctx, AV_LOG_ERROR, "cannot write to transform file %s\n", sd->result);
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return AVERROR(EINVAL);
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}
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}
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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StabData *sd = ctx->priv;
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VSMotionDetect *md = &(sd->md);
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LocalMotions localmotions;
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AVFilterLink *outlink = inlink->dst->outputs[0];
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VSFrame frame;
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int plane;
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if (sd->conf.show > 0 && !av_frame_is_writable(in))
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av_frame_make_writable(in);
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for (plane = 0; plane < md->fi.planes; plane++) {
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frame.data[plane] = in->data[plane];
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frame.linesize[plane] = in->linesize[plane];
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}
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if (vsMotionDetection(md, &localmotions, &frame) != VS_OK) {
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av_log(ctx, AV_LOG_ERROR, "motion detection failed");
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return AVERROR(AVERROR_EXTERNAL);
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} else {
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if (vsWriteToFile(md, sd->f, &localmotions) != VS_OK) {
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int ret = AVERROR(errno);
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av_log(ctx, AV_LOG_ERROR, "cannot write to transform file");
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return ret;
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}
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vs_vector_del(&localmotions);
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}
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return ff_filter_frame(outlink, in);
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}
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static const AVFilterPad avfilter_vf_vidstabdetect_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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.config_props = config_input,
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},
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{ NULL }
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};
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static const AVFilterPad avfilter_vf_vidstabdetect_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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},
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{ NULL }
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};
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AVFilter ff_vf_vidstabdetect = {
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.name = "vidstabdetect",
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.description = NULL_IF_CONFIG_SMALL("Extract relative transformations, "
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"pass 1 of 2 for stabilization "
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"(see vidstabtransform for pass 2)."),
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.priv_size = sizeof(StabData),
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.init = init,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = avfilter_vf_vidstabdetect_inputs,
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.outputs = avfilter_vf_vidstabdetect_outputs,
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.priv_class = &vidstabdetect_class,
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};
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