| 1 | /* |
| 2 | * Copyright (c) 2013 Georg Martius <georg dot martius at web dot de> |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #define DEFAULT_RESULT_NAME "transforms.trf" |
| 22 | |
| 23 | #include <vid.stab/libvidstab.h> |
| 24 | |
| 25 | #include "libavutil/common.h" |
| 26 | #include "libavutil/opt.h" |
| 27 | #include "libavutil/imgutils.h" |
| 28 | #include "avfilter.h" |
| 29 | #include "internal.h" |
| 30 | |
| 31 | #include "vidstabutils.h" |
| 32 | |
| 33 | typedef struct { |
| 34 | const AVClass *class; |
| 35 | |
| 36 | VSMotionDetect md; |
| 37 | VSMotionDetectConfig conf; |
| 38 | |
| 39 | char *result; |
| 40 | FILE *f; |
| 41 | } StabData; |
| 42 | |
| 43 | |
| 44 | #define OFFSET(x) offsetof(StabData, x) |
| 45 | #define OFFSETC(x) (offsetof(StabData, conf)+offsetof(VSMotionDetectConfig, x)) |
| 46 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| 47 | |
| 48 | static const AVOption vidstabdetect_options[] = { |
| 49 | {"result", "path to the file used to write the transforms", OFFSET(result), AV_OPT_TYPE_STRING, {.str = DEFAULT_RESULT_NAME}, .flags = FLAGS}, |
| 50 | {"shakiness", "how shaky is the video and how quick is the camera?" |
| 51 | " 1: little (fast) 10: very strong/quick (slow)", OFFSETC(shakiness), AV_OPT_TYPE_INT, {.i64 = 5}, 1, 10, FLAGS}, |
| 52 | {"accuracy", "(>=shakiness) 1: low 15: high (slow)", OFFSETC(accuracy), AV_OPT_TYPE_INT, {.i64 = 15}, 1, 15, FLAGS}, |
| 53 | {"stepsize", "region around minimum is scanned with 1 pixel resolution", OFFSETC(stepSize), AV_OPT_TYPE_INT, {.i64 = 6}, 1, 32, FLAGS}, |
| 54 | {"mincontrast", "below this contrast a field is discarded (0-1)", OFFSETC(contrastThreshold), AV_OPT_TYPE_DOUBLE, {.dbl = 0.25}, 0.0, 1.0, FLAGS}, |
| 55 | {"show", "0: draw nothing; 1,2: show fields and transforms", OFFSETC(show), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 2, FLAGS}, |
| 56 | {"tripod", "virtual tripod mode (if >0): motion is compared to a reference" |
| 57 | " reference frame (frame # is the value)", OFFSETC(virtualTripod), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS}, |
| 58 | {NULL} |
| 59 | }; |
| 60 | |
| 61 | AVFILTER_DEFINE_CLASS(vidstabdetect); |
| 62 | |
| 63 | static av_cold int init(AVFilterContext *ctx) |
| 64 | { |
| 65 | StabData *sd = ctx->priv; |
| 66 | ff_vs_init(); |
| 67 | sd->class = &vidstabdetect_class; |
| 68 | av_log(ctx, AV_LOG_VERBOSE, "vidstabdetect filter: init %s\n", LIBVIDSTAB_VERSION); |
| 69 | return 0; |
| 70 | } |
| 71 | |
| 72 | static av_cold void uninit(AVFilterContext *ctx) |
| 73 | { |
| 74 | StabData *sd = ctx->priv; |
| 75 | VSMotionDetect *md = &(sd->md); |
| 76 | |
| 77 | if (sd->f) { |
| 78 | fclose(sd->f); |
| 79 | sd->f = NULL; |
| 80 | } |
| 81 | |
| 82 | vsMotionDetectionCleanup(md); |
| 83 | } |
| 84 | |
| 85 | static int query_formats(AVFilterContext *ctx) |
| 86 | { |
| 87 | // If you add something here also add it in vidstabutils.c |
| 88 | static const enum AVPixelFormat pix_fmts[] = { |
| 89 | AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, |
| 90 | AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVA420P, |
| 91 | AV_PIX_FMT_YUV440P, AV_PIX_FMT_GRAY8, |
| 92 | AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, AV_PIX_FMT_RGBA, |
| 93 | AV_PIX_FMT_NONE |
| 94 | }; |
| 95 | |
| 96 | ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | static int config_input(AVFilterLink *inlink) |
| 101 | { |
| 102 | AVFilterContext *ctx = inlink->dst; |
| 103 | StabData *sd = ctx->priv; |
| 104 | |
| 105 | VSMotionDetect* md = &(sd->md); |
| 106 | VSFrameInfo fi; |
| 107 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| 108 | |
| 109 | vsFrameInfoInit(&fi, inlink->w, inlink->h, |
| 110 | ff_av2vs_pixfmt(ctx, inlink->format)); |
| 111 | if (fi.bytesPerPixel != av_get_bits_per_pixel(desc)/8) { |
| 112 | av_log(ctx, AV_LOG_ERROR, "pixel-format error: wrong bits/per/pixel, please report a BUG"); |
| 113 | return AVERROR(EINVAL); |
| 114 | } |
| 115 | if (fi.log2ChromaW != desc->log2_chroma_w) { |
| 116 | av_log(ctx, AV_LOG_ERROR, "pixel-format error: log2_chroma_w, please report a BUG"); |
| 117 | return AVERROR(EINVAL); |
| 118 | } |
| 119 | |
| 120 | if (fi.log2ChromaH != desc->log2_chroma_h) { |
| 121 | av_log(ctx, AV_LOG_ERROR, "pixel-format error: log2_chroma_h, please report a BUG"); |
| 122 | return AVERROR(EINVAL); |
| 123 | } |
| 124 | |
| 125 | // set values that are not initialized by the options |
| 126 | sd->conf.algo = 1; |
| 127 | sd->conf.modName = "vidstabdetect"; |
| 128 | if (vsMotionDetectInit(md, &sd->conf, &fi) != VS_OK) { |
| 129 | av_log(ctx, AV_LOG_ERROR, "initialization of Motion Detection failed, please report a BUG"); |
| 130 | return AVERROR(EINVAL); |
| 131 | } |
| 132 | |
| 133 | vsMotionDetectGetConfig(&sd->conf, md); |
| 134 | av_log(ctx, AV_LOG_INFO, "Video stabilization settings (pass 1/2):\n"); |
| 135 | av_log(ctx, AV_LOG_INFO, " shakiness = %d\n", sd->conf.shakiness); |
| 136 | av_log(ctx, AV_LOG_INFO, " accuracy = %d\n", sd->conf.accuracy); |
| 137 | av_log(ctx, AV_LOG_INFO, " stepsize = %d\n", sd->conf.stepSize); |
| 138 | av_log(ctx, AV_LOG_INFO, " mincontrast = %f\n", sd->conf.contrastThreshold); |
| 139 | av_log(ctx, AV_LOG_INFO, " tripod = %d\n", sd->conf.virtualTripod); |
| 140 | av_log(ctx, AV_LOG_INFO, " show = %d\n", sd->conf.show); |
| 141 | av_log(ctx, AV_LOG_INFO, " result = %s\n", sd->result); |
| 142 | |
| 143 | sd->f = fopen(sd->result, "w"); |
| 144 | if (sd->f == NULL) { |
| 145 | av_log(ctx, AV_LOG_ERROR, "cannot open transform file %s\n", sd->result); |
| 146 | return AVERROR(EINVAL); |
| 147 | } else { |
| 148 | if (vsPrepareFile(md, sd->f) != VS_OK) { |
| 149 | av_log(ctx, AV_LOG_ERROR, "cannot write to transform file %s\n", sd->result); |
| 150 | return AVERROR(EINVAL); |
| 151 | } |
| 152 | } |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| 157 | { |
| 158 | AVFilterContext *ctx = inlink->dst; |
| 159 | StabData *sd = ctx->priv; |
| 160 | VSMotionDetect *md = &(sd->md); |
| 161 | LocalMotions localmotions; |
| 162 | |
| 163 | AVFilterLink *outlink = inlink->dst->outputs[0]; |
| 164 | VSFrame frame; |
| 165 | int plane; |
| 166 | |
| 167 | if (sd->conf.show > 0 && !av_frame_is_writable(in)) |
| 168 | av_frame_make_writable(in); |
| 169 | |
| 170 | for (plane = 0; plane < md->fi.planes; plane++) { |
| 171 | frame.data[plane] = in->data[plane]; |
| 172 | frame.linesize[plane] = in->linesize[plane]; |
| 173 | } |
| 174 | if (vsMotionDetection(md, &localmotions, &frame) != VS_OK) { |
| 175 | av_log(ctx, AV_LOG_ERROR, "motion detection failed"); |
| 176 | return AVERROR(AVERROR_EXTERNAL); |
| 177 | } else { |
| 178 | if (vsWriteToFile(md, sd->f, &localmotions) != VS_OK) { |
| 179 | av_log(ctx, AV_LOG_ERROR, "cannot write to transform file"); |
| 180 | return AVERROR(errno); |
| 181 | } |
| 182 | vs_vector_del(&localmotions); |
| 183 | } |
| 184 | |
| 185 | return ff_filter_frame(outlink, in); |
| 186 | } |
| 187 | |
| 188 | static const AVFilterPad avfilter_vf_vidstabdetect_inputs[] = { |
| 189 | { |
| 190 | .name = "default", |
| 191 | .type = AVMEDIA_TYPE_VIDEO, |
| 192 | .filter_frame = filter_frame, |
| 193 | .config_props = config_input, |
| 194 | }, |
| 195 | { NULL } |
| 196 | }; |
| 197 | |
| 198 | static const AVFilterPad avfilter_vf_vidstabdetect_outputs[] = { |
| 199 | { |
| 200 | .name = "default", |
| 201 | .type = AVMEDIA_TYPE_VIDEO, |
| 202 | }, |
| 203 | { NULL } |
| 204 | }; |
| 205 | |
| 206 | AVFilter ff_vf_vidstabdetect = { |
| 207 | .name = "vidstabdetect", |
| 208 | .description = NULL_IF_CONFIG_SMALL("Extract relative transformations, " |
| 209 | "pass 1 of 2 for stabilization " |
| 210 | "(see vidstabtransform for pass 2)."), |
| 211 | .priv_size = sizeof(StabData), |
| 212 | .init = init, |
| 213 | .uninit = uninit, |
| 214 | .query_formats = query_formats, |
| 215 | .inputs = avfilter_vf_vidstabdetect_inputs, |
| 216 | .outputs = avfilter_vf_vidstabdetect_outputs, |
| 217 | .priv_class = &vidstabdetect_class, |
| 218 | }; |