/*
* Copyright (c) 2013 Georg Martius <georg dot martius at web dot de>
*
* 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 DEFAULT_INPUT_NAME "transforms.trf"
#include <vid.stab/libvidstab.h>
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "avfilter.h"
#include "internal.h"
#include "vidstabutils.h"
typedef struct TransformContext {
const AVClass *class;
VSTransformData td;
VSTransformConfig conf;
VSTransformations trans; // transformations
char *input; // name of transform file
int tripod;
int debug;
} TransformContext;
#define OFFSET(x) offsetof(TransformContext, x)
#define OFFSETC(x) (offsetof(TransformContext, conf)+offsetof(VSTransformConfig, x))
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption vidstabtransform_options[] = {
{"input", "set path to the file storing the transforms", OFFSET(input),
AV_OPT_TYPE_STRING, {.str = DEFAULT_INPUT_NAME}, .flags = FLAGS },
{"smoothing", "set number of frames*2 + 1 used for lowpass filtering", OFFSETC(smoothing),
AV_OPT_TYPE_INT, {.i64 = 15}, 0, 1000, FLAGS},
{"optalgo", "set camera path optimization algo", OFFSETC(camPathAlgo),
AV_OPT_TYPE_INT, {.i64 = VSOptimalL1}, VSOptimalL1, VSAvg, FLAGS, "optalgo"},
{ "opt", "global optimization", 0, // from version 1.0 on
AV_OPT_TYPE_CONST, {.i64 = VSOptimalL1 }, 0, 0, FLAGS, "optalgo"},
{ "gauss", "gaussian kernel", 0,
AV_OPT_TYPE_CONST, {.i64 = VSGaussian }, 0, 0, FLAGS, "optalgo"},
{ "avg", "simple averaging on motion", 0,
AV_OPT_TYPE_CONST, {.i64 = VSAvg }, 0, 0, FLAGS, "optalgo"},
{"maxshift", "set maximal number of pixels to translate image", OFFSETC(maxShift),
AV_OPT_TYPE_INT, {.i64 = -1}, -1, 500, FLAGS},
{"maxangle", "set maximal angle in rad to rotate image", OFFSETC(maxAngle),
AV_OPT_TYPE_DOUBLE, {.dbl = -1.0}, -1.0, 3.14, FLAGS},
{"crop", "set cropping mode", OFFSETC(crop),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS, "crop"},
{ "keep", "keep border", 0,
AV_OPT_TYPE_CONST, {.i64 = VSKeepBorder }, 0, 0, FLAGS, "crop"},
{ "black", "black border", 0,
AV_OPT_TYPE_CONST, {.i64 = VSCropBorder }, 0, 0, FLAGS, "crop"},
{"invert", "invert transforms", OFFSETC(invert),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS},
{"relative", "consider transforms as relative", OFFSETC(relative),
AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, FLAGS},
{"zoom", "set percentage to zoom (>0: zoom in, <0: zoom out", OFFSETC(zoom),
AV_OPT_TYPE_DOUBLE, {.dbl = 0}, -100, 100, FLAGS},
{"optzoom", "set optimal zoom (0: nothing, 1: optimal static zoom, 2: optimal dynamic zoom)", OFFSETC(optZoom),
AV_OPT_TYPE_INT, {.i64 = 1}, 0, 2, FLAGS},
{"zoomspeed", "for adative zoom: percent to zoom maximally each frame", OFFSETC(zoomSpeed),
AV_OPT_TYPE_DOUBLE, {.dbl = 0.25}, 0, 5, FLAGS},
{"interpol", "set type of interpolation", OFFSETC(interpolType),
AV_OPT_TYPE_INT, {.i64 = 2}, 0, 3, FLAGS, "interpol"},
{ "no", "no interpolation", 0,
AV_OPT_TYPE_CONST, {.i64 = VS_Zero }, 0, 0, FLAGS, "interpol"},
{ "linear", "linear (horizontal)", 0,
AV_OPT_TYPE_CONST, {.i64 = VS_Linear }, 0, 0, FLAGS, "interpol"},
{ "bilinear","bi-linear", 0,
AV_OPT_TYPE_CONST, {.i64 = VS_BiLinear},0, 0, FLAGS, "interpol"},
{ "bicubic", "bi-cubic", 0,
AV_OPT_TYPE_CONST, {.i64 = VS_BiCubic },0, 0, FLAGS, "interpol"},
{"tripod", "enable virtual tripod mode (same as relative=0:smoothing=0)", OFFSET(tripod),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS},
{"debug", "enable debug mode and writer global motions information to file", OFFSET(debug),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS},
{NULL}
};
AVFILTER_DEFINE_CLASS(vidstabtransform);
static av_cold int init(AVFilterContext *ctx)
{
TransformContext *tc = ctx->priv;
ff_vs_init();
tc->class = &vidstabtransform_class;
av_log(ctx, AV_LOG_VERBOSE, "vidstabtransform filter: init %s\n", LIBVIDSTAB_VERSION);
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
TransformContext *tc = ctx->priv;
vsTransformDataCleanup(&tc->td);
vsTransformationsCleanup(&tc->trans);
}
static int query_formats(AVFilterContext *ctx)
{
// If you add something here also add it in vidstabutils.c
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_GRAY8,
AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, AV_PIX_FMT_RGBA,
AV_PIX_FMT_NONE
};
AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
if (!fmts_list)
return AVERROR(ENOMEM);
return ff_set_common_formats(ctx, fmts_list);
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
TransformContext *tc = ctx->priv;
FILE *f;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
VSTransformData *td = &(tc->td);
VSFrameInfo fi_src;
VSFrameInfo fi_dest;
if (!vsFrameInfoInit(&fi_src, inlink->w, inlink->h,
ff_av2vs_pixfmt(ctx, inlink->format)) ||
!vsFrameInfoInit(&fi_dest, inlink->w, inlink->h,
ff_av2vs_pixfmt(ctx, inlink->format))) {
av_log(ctx, AV_LOG_ERROR, "unknown pixel format: %i (%s)",
inlink->format, desc->name);
return AVERROR(EINVAL);
}
if (fi_src.bytesPerPixel != av_get_bits_per_pixel(desc)/8 ||
fi_src.log2ChromaW != desc->log2_chroma_w ||
fi_src.log2ChromaH != desc->log2_chroma_h) {
av_log(ctx, AV_LOG_ERROR, "pixel-format error: bpp %i<>%i ",
fi_src.bytesPerPixel, av_get_bits_per_pixel(desc)/8);
av_log(ctx, AV_LOG_ERROR, "chroma_subsampl: w: %i<>%i h: %i<>%i\n",
fi_src.log2ChromaW, desc->log2_chroma_w,
fi_src.log2ChromaH, desc->log2_chroma_h);
return AVERROR(EINVAL);
}
// set values that are not initializes by the options
tc->conf.modName = "vidstabtransform";
tc->conf.verbose = 1 + tc->debug;
if (tc->tripod) {
av_log(ctx, AV_LOG_INFO, "Virtual tripod mode: relative=0, smoothing=0\n");
tc->conf.relative = 0;
tc->conf.smoothing = 0;
}
tc->conf.simpleMotionCalculation = 0;
tc->conf.storeTransforms = tc->debug;
tc->conf.smoothZoom = 0;
if (vsTransformDataInit(td, &tc->conf, &fi_src, &fi_dest) != VS_OK) {
av_log(ctx, AV_LOG_ERROR, "initialization of vid.stab transform failed, please report a BUG\n");
return AVERROR(EINVAL);
}
vsTransformGetConfig(&tc->conf, td);
av_log(ctx, AV_LOG_INFO, "Video transformation/stabilization settings (pass 2/2):\n");
av_log(ctx, AV_LOG_INFO, " input = %s\n", tc->input);
av_log(ctx, AV_LOG_INFO, " smoothing = %d\n", tc->conf.smoothing);
av_log(ctx, AV_LOG_INFO, " optalgo = %s\n",
tc->conf.camPathAlgo == VSOptimalL1 ? "opt" :
(tc->conf.camPathAlgo == VSGaussian ? "gauss" : "avg"));
av_log(ctx, AV_LOG_INFO, " maxshift = %d\n", tc->conf.maxShift);
av_log(ctx, AV_LOG_INFO, " maxangle = %f\n", tc->conf.maxAngle);
av_log(ctx, AV_LOG_INFO, " crop = %s\n", tc->conf.crop ? "Black" : "Keep");
av_log(ctx, AV_LOG_INFO, " relative = %s\n", tc->conf.relative ? "True": "False");
av_log(ctx, AV_LOG_INFO, " invert = %s\n", tc->conf.invert ? "True" : "False");
av_log(ctx, AV_LOG_INFO, " zoom = %f\n", tc->conf.zoom);
av_log(ctx, AV_LOG_INFO, " optzoom = %s\n",
tc->conf.optZoom == 1 ? "Static (1)" : (tc->conf.optZoom == 2 ? "Dynamic (2)" : "Off (0)"));
if (tc->conf.optZoom == 2)
av_log(ctx, AV_LOG_INFO, " zoomspeed = %g\n", tc->conf.zoomSpeed);
av_log(ctx, AV_LOG_INFO, " interpol = %s\n", getInterpolationTypeName(tc->conf.interpolType));
f = fopen(tc->input, "r");
if (!f) {
int ret = AVERROR(errno);
av_log(ctx, AV_LOG_ERROR, "cannot open input file %s\n", tc->input);
return ret;
} else {
VSManyLocalMotions mlms;
if (vsReadLocalMotionsFile(f, &mlms) == VS_OK) {
// calculate the actual transforms from the local motions
if (vsLocalmotions2Transforms(td, &mlms, &tc->trans) != VS_OK) {
av_log(ctx, AV_LOG_ERROR, "calculating transformations failed\n");
return AVERROR(EINVAL);
}
} else { // try to read old format
if (!vsReadOldTransforms(td, f, &tc->trans)) { /* read input file */
av_log(ctx, AV_LOG_ERROR, "error parsing input file %s\n", tc->input);
return AVERROR(EINVAL);
}
}
}
fclose(f);
if (vsPreprocessTransforms(td, &tc->trans) != VS_OK) {
av_log(ctx, AV_LOG_ERROR, "error while preprocessing transforms\n");
return AVERROR(EINVAL);
}
// TODO: add sharpening, so far the user needs to call the unsharp filter manually
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
TransformContext *tc = ctx->priv;
VSTransformData* td = &(tc->td);
AVFilterLink *outlink = inlink->dst->outputs[0];
int direct = 0;
AVFrame *out;
VSFrame inframe;
int plane;
if (av_frame_is_writable(in)) {
direct = 1;
out = in;
} else {
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&in);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
}
for (plane = 0; plane < vsTransformGetSrcFrameInfo(td)->planes; plane++) {
inframe.data[plane] = in->data[plane];
inframe.linesize[plane] = in->linesize[plane];
}
if (direct) {
vsTransformPrepare(td, &inframe, &inframe);
} else { // separate frames
VSFrame outframe;
for (plane = 0; plane < vsTransformGetDestFrameInfo(td)->planes; plane++) {
outframe.data[plane] = out->data[plane];
outframe.linesize[plane] = out->linesize[plane];
}
vsTransformPrepare(td, &inframe, &outframe);
}
vsDoTransform(td, vsGetNextTransform(td, &tc->trans));
vsTransformFinish(td);
if (!direct)
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static const AVFilterPad avfilter_vf_vidstabtransform_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
{ NULL }
};
static const AVFilterPad avfilter_vf_vidstabtransform_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter ff_vf_vidstabtransform = {
.name = "vidstabtransform",
.description = NULL_IF_CONFIG_SMALL("Transform the frames, "
"pass 2 of 2 for stabilization "
"(see vidstabdetect for pass 1)."),
.priv_size = sizeof(TransformContext),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = avfilter_vf_vidstabtransform_inputs,
.outputs = avfilter_vf_vidstabtransform_outputs,
.priv_class = &vidstabtransform_class,
};