1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*
* 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_RESULT_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 StabData {
const AVClass *class;
VSMotionDetect md;
VSMotionDetectConfig conf;
char *result;
FILE *f;
} StabData;
#define OFFSET(x) offsetof(StabData, x)
#define OFFSETC(x) (offsetof(StabData, conf)+offsetof(VSMotionDetectConfig, x))
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption vidstabdetect_options[] = {
{"result", "path to the file used to write the transforms", OFFSET(result), AV_OPT_TYPE_STRING, {.str = DEFAULT_RESULT_NAME}, .flags = FLAGS},
{"shakiness", "how shaky is the video and how quick is the camera?"
" 1: little (fast) 10: very strong/quick (slow)", OFFSETC(shakiness), AV_OPT_TYPE_INT, {.i64 = 5}, 1, 10, FLAGS},
{"accuracy", "(>=shakiness) 1: low 15: high (slow)", OFFSETC(accuracy), AV_OPT_TYPE_INT, {.i64 = 15}, 1, 15, FLAGS},
{"stepsize", "region around minimum is scanned with 1 pixel resolution", OFFSETC(stepSize), AV_OPT_TYPE_INT, {.i64 = 6}, 1, 32, FLAGS},
{"mincontrast", "below this contrast a field is discarded (0-1)", OFFSETC(contrastThreshold), AV_OPT_TYPE_DOUBLE, {.dbl = 0.25}, 0.0, 1.0, FLAGS},
{"show", "0: draw nothing; 1,2: show fields and transforms", OFFSETC(show), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 2, FLAGS},
{"tripod", "virtual tripod mode (if >0): motion is compared to a reference"
" reference frame (frame # is the value)", OFFSETC(virtualTripod), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS},
{NULL}
};
AVFILTER_DEFINE_CLASS(vidstabdetect);
static av_cold int init(AVFilterContext *ctx)
{
StabData *s = ctx->priv;
ff_vs_init();
s->class = &vidstabdetect_class;
av_log(ctx, AV_LOG_VERBOSE, "vidstabdetect filter: init %s\n", LIBVIDSTAB_VERSION);
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
StabData *s = ctx->priv;
VSMotionDetect *md = &(s->md);
if (s->f) {
fclose(s->f);
s->f = NULL;
}
vsMotionDetectionCleanup(md);
}
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;
StabData *s = ctx->priv;
VSMotionDetect* md = &(s->md);
VSFrameInfo fi;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int is_planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
vsFrameInfoInit(&fi, inlink->w, inlink->h,
ff_av2vs_pixfmt(ctx, inlink->format));
if (!is_planar && fi.bytesPerPixel != av_get_bits_per_pixel(desc)/8) {
av_log(ctx, AV_LOG_ERROR, "pixel-format error: wrong bits/per/pixel, please report a BUG");
return AVERROR(EINVAL);
}
if (fi.log2ChromaW != desc->log2_chroma_w) {
av_log(ctx, AV_LOG_ERROR, "pixel-format error: log2_chroma_w, please report a BUG");
return AVERROR(EINVAL);
}
if (fi.log2ChromaH != desc->log2_chroma_h) {
av_log(ctx, AV_LOG_ERROR, "pixel-format error: log2_chroma_h, please report a BUG");
return AVERROR(EINVAL);
}
// set values that are not initialized by the options
s->conf.algo = 1;
s->conf.modName = "vidstabdetect";
if (vsMotionDetectInit(md, &s->conf, &fi) != VS_OK) {
av_log(ctx, AV_LOG_ERROR, "initialization of Motion Detection failed, please report a BUG");
return AVERROR(EINVAL);
}
vsMotionDetectGetConfig(&s->conf, md);
av_log(ctx, AV_LOG_INFO, "Video stabilization settings (pass 1/2):\n");
av_log(ctx, AV_LOG_INFO, " shakiness = %d\n", s->conf.shakiness);
av_log(ctx, AV_LOG_INFO, " accuracy = %d\n", s->conf.accuracy);
av_log(ctx, AV_LOG_INFO, " stepsize = %d\n", s->conf.stepSize);
av_log(ctx, AV_LOG_INFO, " mincontrast = %f\n", s->conf.contrastThreshold);
av_log(ctx, AV_LOG_INFO, " tripod = %d\n", s->conf.virtualTripod);
av_log(ctx, AV_LOG_INFO, " show = %d\n", s->conf.show);
av_log(ctx, AV_LOG_INFO, " result = %s\n", s->result);
s->f = fopen(s->result, "w");
if (s->f == NULL) {
av_log(ctx, AV_LOG_ERROR, "cannot open transform file %s\n", s->result);
return AVERROR(EINVAL);
} else {
if (vsPrepareFile(md, s->f) != VS_OK) {
av_log(ctx, AV_LOG_ERROR, "cannot write to transform file %s\n", s->result);
return AVERROR(EINVAL);
}
}
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
StabData *s = ctx->priv;
VSMotionDetect *md = &(s->md);
LocalMotions localmotions;
AVFilterLink *outlink = inlink->dst->outputs[0];
VSFrame frame;
int plane;
if (s->conf.show > 0 && !av_frame_is_writable(in))
av_frame_make_writable(in);
for (plane = 0; plane < md->fi.planes; plane++) {
frame.data[plane] = in->data[plane];
frame.linesize[plane] = in->linesize[plane];
}
if (vsMotionDetection(md, &localmotions, &frame) != VS_OK) {
av_log(ctx, AV_LOG_ERROR, "motion detection failed");
return AVERROR(AVERROR_EXTERNAL);
} else {
if (vsWriteToFile(md, s->f, &localmotions) != VS_OK) {
int ret = AVERROR(errno);
av_log(ctx, AV_LOG_ERROR, "cannot write to transform file");
return ret;
}
vs_vector_del(&localmotions);
}
return ff_filter_frame(outlink, in);
}
static const AVFilterPad avfilter_vf_vidstabdetect_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
{ NULL }
};
static const AVFilterPad avfilter_vf_vidstabdetect_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter ff_vf_vidstabdetect = {
.name = "vidstabdetect",
.description = NULL_IF_CONFIG_SMALL("Extract relative transformations, "
"pass 1 of 2 for stabilization "
"(see vidstabtransform for pass 2)."),
.priv_size = sizeof(StabData),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = avfilter_vf_vidstabdetect_inputs,
.outputs = avfilter_vf_vidstabdetect_outputs,
.priv_class = &vidstabdetect_class,
};
|
