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  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_INPUT_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.     VSTransformData td;
  37.     VSTransformConfig conf;
  38.  
  39.     VSTransformations trans;    // transformations
  40.     char *input;                // name of transform file
  41.     int tripod;
  42.     int debug;
  43. } TransformContext;
  44.  
  45. #define OFFSET(x) offsetof(TransformContext, x)
  46. #define OFFSETC(x) (offsetof(TransformContext, conf)+offsetof(VSTransformConfig, x))
  47. #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
  48.  
  49. static const AVOption vidstabtransform_options[] = {
  50.     {"input",     "set path to the file storing the transforms", OFFSET(input),
  51.                    AV_OPT_TYPE_STRING, {.str = DEFAULT_INPUT_NAME}, .flags = FLAGS },
  52.     {"smoothing", "set number of frames*2 + 1 used for lowpass filtering", OFFSETC(smoothing),
  53.                    AV_OPT_TYPE_INT,    {.i64 = 15},       0, 1000, FLAGS},
  54.  
  55.     {"optalgo",   "set camera path optimization algo", OFFSETC(camPathAlgo),
  56.                    AV_OPT_TYPE_INT,    {.i64 = VSOptimalL1}, VSOptimalL1, VSAvg, FLAGS, "optalgo"},
  57.     {  "opt",     "global optimization",                                            0, // from version 1.0 on
  58.                    AV_OPT_TYPE_CONST,  {.i64 = VSOptimalL1 }, 0, 0, FLAGS, "optalgo"},
  59.     {  "gauss",   "gaussian kernel",                                                0,
  60.                    AV_OPT_TYPE_CONST,  {.i64 = VSGaussian }, 0, 0, FLAGS,  "optalgo"},
  61.     {  "avg",     "simple averaging on motion",                                     0,
  62.                    AV_OPT_TYPE_CONST,  {.i64 = VSAvg },      0, 0, FLAGS,  "optalgo"},
  63.  
  64.     {"maxshift",  "set maximal number of pixels to translate image", OFFSETC(maxShift),
  65.                    AV_OPT_TYPE_INT,    {.i64 = -1},      -1, 500,  FLAGS},
  66.     {"maxangle",  "set maximal angle in rad to rotate image", OFFSETC(maxAngle),
  67.                    AV_OPT_TYPE_DOUBLE, {.dbl = -1.0},  -1.0, 3.14, FLAGS},
  68.  
  69.     {"crop",      "set cropping mode", OFFSETC(crop),
  70.                    AV_OPT_TYPE_INT,    {.i64 = 0},        0, 1,    FLAGS, "crop"},
  71.     {  "keep",    "keep border",                                                    0,
  72.                    AV_OPT_TYPE_CONST,  {.i64 = VSKeepBorder }, 0, 0, FLAGS, "crop"},
  73.     {  "black",   "black border",                                                   0,
  74.                    AV_OPT_TYPE_CONST,  {.i64 = VSCropBorder }, 0, 0, FLAGS, "crop"},
  75.  
  76.     {"invert",    "invert transforms", OFFSETC(invert),
  77.                    AV_OPT_TYPE_INT,    {.i64 = 0},        0, 1,    FLAGS},
  78.     {"relative",  "consider transforms as relative", OFFSETC(relative),
  79.                    AV_OPT_TYPE_INT,    {.i64 = 1},        0, 1,    FLAGS},
  80.     {"zoom",      "set percentage to zoom (>0: zoom in, <0: zoom out", OFFSETC(zoom),
  81.                    AV_OPT_TYPE_DOUBLE, {.dbl = 0},     -100, 100,  FLAGS},
  82.     {"optzoom",   "set optimal zoom (0: nothing, 1: optimal static zoom, 2: optimal dynamic zoom)", OFFSETC(optZoom),
  83.                    AV_OPT_TYPE_INT,    {.i64 = 1},        0, 2,    FLAGS},
  84.     {"zoomspeed", "for adative zoom: percent to zoom maximally each frame",         OFFSETC(zoomSpeed),
  85.                    AV_OPT_TYPE_DOUBLE, {.dbl = 0.25},     0, 5,    FLAGS},
  86.  
  87.     {"interpol",  "set type of interpolation", OFFSETC(interpolType),
  88.                    AV_OPT_TYPE_INT,    {.i64 = 2},        0, 3,    FLAGS, "interpol"},
  89.     {  "no",      "no interpolation",                                               0,
  90.                    AV_OPT_TYPE_CONST,  {.i64 = VS_Zero  },  0, 0,  FLAGS, "interpol"},
  91.     {  "linear",  "linear (horizontal)",                                            0,
  92.                    AV_OPT_TYPE_CONST,  {.i64 = VS_Linear }, 0, 0,  FLAGS, "interpol"},
  93.     {  "bilinear","bi-linear",                                                      0,
  94.                    AV_OPT_TYPE_CONST,  {.i64 = VS_BiLinear},0, 0,  FLAGS, "interpol"},
  95.     {  "bicubic", "bi-cubic",                                                       0,
  96.                    AV_OPT_TYPE_CONST,  {.i64 = VS_BiCubic },0, 0,  FLAGS, "interpol"},
  97.  
  98.     {"tripod",    "enable virtual tripod mode (same as relative=0:smoothing=0)", OFFSET(tripod),
  99.                    AV_OPT_TYPE_INT,    {.i64 = 0},        0, 1,    FLAGS},
  100.     {"debug",     "enable debug mode and writer global motions information to file", OFFSET(debug),
  101.                    AV_OPT_TYPE_INT,    {.i64 = 0},        0, 1,    FLAGS},
  102.     {NULL}
  103. };
  104.  
  105. AVFILTER_DEFINE_CLASS(vidstabtransform);
  106.  
  107. static av_cold int init(AVFilterContext *ctx)
  108. {
  109.     TransformContext *tc = ctx->priv;
  110.     ff_vs_init();
  111.     tc->class = &vidstabtransform_class;
  112.     av_log(ctx, AV_LOG_VERBOSE, "vidstabtransform filter: init %s\n", LIBVIDSTAB_VERSION);
  113.     return 0;
  114. }
  115.  
  116. static av_cold void uninit(AVFilterContext *ctx)
  117. {
  118.     TransformContext *tc = ctx->priv;
  119.  
  120.     vsTransformDataCleanup(&tc->td);
  121.     vsTransformationsCleanup(&tc->trans);
  122. }
  123.  
  124. static int query_formats(AVFilterContext *ctx)
  125. {
  126.     // If you add something here also add it in vidstabutils.c
  127.     static const enum AVPixelFormat pix_fmts[] = {
  128.         AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
  129.         AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVA420P,
  130.         AV_PIX_FMT_YUV440P,  AV_PIX_FMT_GRAY8,
  131.         AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, AV_PIX_FMT_RGBA,
  132.         AV_PIX_FMT_NONE
  133.     };
  134.  
  135.     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
  136.     if (!fmts_list)
  137.         return AVERROR(ENOMEM);
  138.     return ff_set_common_formats(ctx, fmts_list);
  139. }
  140.  
  141.  
  142. static int config_input(AVFilterLink *inlink)
  143. {
  144.     AVFilterContext *ctx = inlink->dst;
  145.     TransformContext *tc = ctx->priv;
  146.     FILE *f;
  147.  
  148.     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
  149.  
  150.     VSTransformData *td = &(tc->td);
  151.  
  152.     VSFrameInfo fi_src;
  153.     VSFrameInfo fi_dest;
  154.  
  155.     if (!vsFrameInfoInit(&fi_src, inlink->w, inlink->h,
  156.                          ff_av2vs_pixfmt(ctx, inlink->format)) ||
  157.         !vsFrameInfoInit(&fi_dest, inlink->w, inlink->h,
  158.                          ff_av2vs_pixfmt(ctx, inlink->format))) {
  159.         av_log(ctx, AV_LOG_ERROR, "unknown pixel format: %i (%s)",
  160.                inlink->format, desc->name);
  161.         return AVERROR(EINVAL);
  162.     }
  163.  
  164.     if (fi_src.bytesPerPixel != av_get_bits_per_pixel(desc)/8 ||
  165.         fi_src.log2ChromaW != desc->log2_chroma_w ||
  166.         fi_src.log2ChromaH != desc->log2_chroma_h) {
  167.         av_log(ctx, AV_LOG_ERROR, "pixel-format error: bpp %i<>%i  ",
  168.                fi_src.bytesPerPixel, av_get_bits_per_pixel(desc)/8);
  169.         av_log(ctx, AV_LOG_ERROR, "chroma_subsampl: w: %i<>%i  h: %i<>%i\n",
  170.                fi_src.log2ChromaW, desc->log2_chroma_w,
  171.                fi_src.log2ChromaH, desc->log2_chroma_h);
  172.         return AVERROR(EINVAL);
  173.     }
  174.  
  175.     // set values that are not initializes by the options
  176.     tc->conf.modName = "vidstabtransform";
  177.     tc->conf.verbose = 1 + tc->debug;
  178.     if (tc->tripod) {
  179.         av_log(ctx, AV_LOG_INFO, "Virtual tripod mode: relative=0, smoothing=0\n");
  180.         tc->conf.relative  = 0;
  181.         tc->conf.smoothing = 0;
  182.     }
  183.     tc->conf.simpleMotionCalculation = 0;
  184.     tc->conf.storeTransforms         = tc->debug;
  185.     tc->conf.smoothZoom              = 0;
  186.  
  187.     if (vsTransformDataInit(td, &tc->conf, &fi_src, &fi_dest) != VS_OK) {
  188.         av_log(ctx, AV_LOG_ERROR, "initialization of vid.stab transform failed, please report a BUG\n");
  189.         return AVERROR(EINVAL);
  190.     }
  191.  
  192.     vsTransformGetConfig(&tc->conf, td);
  193.     av_log(ctx, AV_LOG_INFO, "Video transformation/stabilization settings (pass 2/2):\n");
  194.     av_log(ctx, AV_LOG_INFO, "    input     = %s\n", tc->input);
  195.     av_log(ctx, AV_LOG_INFO, "    smoothing = %d\n", tc->conf.smoothing);
  196.     av_log(ctx, AV_LOG_INFO, "    optalgo   = %s\n",
  197.            tc->conf.camPathAlgo == VSOptimalL1 ? "opt" :
  198.            (tc->conf.camPathAlgo == VSGaussian ? "gauss" : "avg"));
  199.     av_log(ctx, AV_LOG_INFO, "    maxshift  = %d\n", tc->conf.maxShift);
  200.     av_log(ctx, AV_LOG_INFO, "    maxangle  = %f\n", tc->conf.maxAngle);
  201.     av_log(ctx, AV_LOG_INFO, "    crop      = %s\n", tc->conf.crop ? "Black" : "Keep");
  202.     av_log(ctx, AV_LOG_INFO, "    relative  = %s\n", tc->conf.relative ? "True": "False");
  203.     av_log(ctx, AV_LOG_INFO, "    invert    = %s\n", tc->conf.invert ? "True" : "False");
  204.     av_log(ctx, AV_LOG_INFO, "    zoom      = %f\n", tc->conf.zoom);
  205.     av_log(ctx, AV_LOG_INFO, "    optzoom   = %s\n",
  206.            tc->conf.optZoom == 1 ? "Static (1)" : (tc->conf.optZoom == 2 ? "Dynamic (2)" : "Off (0)"));
  207.     if (tc->conf.optZoom == 2)
  208.         av_log(ctx, AV_LOG_INFO, "    zoomspeed = %g\n", tc->conf.zoomSpeed);
  209.     av_log(ctx, AV_LOG_INFO, "    interpol  = %s\n", getInterpolationTypeName(tc->conf.interpolType));
  210.  
  211.     f = fopen(tc->input, "r");
  212.     if (!f) {
  213.         int ret = AVERROR(errno);
  214.         av_log(ctx, AV_LOG_ERROR, "cannot open input file %s\n", tc->input);
  215.         return ret;
  216.     } else {
  217.         VSManyLocalMotions mlms;
  218.         if (vsReadLocalMotionsFile(f, &mlms) == VS_OK) {
  219.             // calculate the actual transforms from the local motions
  220.             if (vsLocalmotions2Transforms(td, &mlms, &tc->trans) != VS_OK) {
  221.                 av_log(ctx, AV_LOG_ERROR, "calculating transformations failed\n");
  222.                 return AVERROR(EINVAL);
  223.             }
  224.         } else { // try to read old format
  225.             if (!vsReadOldTransforms(td, f, &tc->trans)) { /* read input file */
  226.                 av_log(ctx, AV_LOG_ERROR, "error parsing input file %s\n", tc->input);
  227.                 return AVERROR(EINVAL);
  228.             }
  229.         }
  230.     }
  231.     fclose(f);
  232.  
  233.     if (vsPreprocessTransforms(td, &tc->trans) != VS_OK) {
  234.         av_log(ctx, AV_LOG_ERROR, "error while preprocessing transforms\n");
  235.         return AVERROR(EINVAL);
  236.     }
  237.  
  238.     // TODO: add sharpening, so far the user needs to call the unsharp filter manually
  239.     return 0;
  240. }
  241.  
  242.  
  243. static int filter_frame(AVFilterLink *inlink, AVFrame *in)
  244. {
  245.     AVFilterContext *ctx = inlink->dst;
  246.     TransformContext *tc = ctx->priv;
  247.     VSTransformData* td = &(tc->td);
  248.  
  249.     AVFilterLink *outlink = inlink->dst->outputs[0];
  250.     int direct = 0;
  251.     AVFrame *out;
  252.     VSFrame inframe;
  253.     int plane;
  254.  
  255.     if (av_frame_is_writable(in)) {
  256.         direct = 1;
  257.         out = in;
  258.     } else {
  259.         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
  260.         if (!out) {
  261.             av_frame_free(&in);
  262.             return AVERROR(ENOMEM);
  263.         }
  264.         av_frame_copy_props(out, in);
  265.     }
  266.  
  267.     for (plane = 0; plane < vsTransformGetSrcFrameInfo(td)->planes; plane++) {
  268.         inframe.data[plane] = in->data[plane];
  269.         inframe.linesize[plane] = in->linesize[plane];
  270.     }
  271.     if (direct) {
  272.         vsTransformPrepare(td, &inframe, &inframe);
  273.     } else { // separate frames
  274.         VSFrame outframe;
  275.         for (plane = 0; plane < vsTransformGetDestFrameInfo(td)->planes; plane++) {
  276.             outframe.data[plane] = out->data[plane];
  277.             outframe.linesize[plane] = out->linesize[plane];
  278.         }
  279.         vsTransformPrepare(td, &inframe, &outframe);
  280.     }
  281.  
  282.     vsDoTransform(td, vsGetNextTransform(td, &tc->trans));
  283.  
  284.     vsTransformFinish(td);
  285.  
  286.     if (!direct)
  287.         av_frame_free(&in);
  288.  
  289.     return ff_filter_frame(outlink, out);
  290. }
  291.  
  292. static const AVFilterPad avfilter_vf_vidstabtransform_inputs[] = {
  293.     {
  294.         .name         = "default",
  295.         .type         = AVMEDIA_TYPE_VIDEO,
  296.         .filter_frame = filter_frame,
  297.         .config_props = config_input,
  298.     },
  299.     { NULL }
  300. };
  301.  
  302. static const AVFilterPad avfilter_vf_vidstabtransform_outputs[] = {
  303.     {
  304.         .name = "default",
  305.         .type = AVMEDIA_TYPE_VIDEO,
  306.     },
  307.     { NULL }
  308. };
  309.  
  310. AVFilter ff_vf_vidstabtransform = {
  311.     .name          = "vidstabtransform",
  312.     .description   = NULL_IF_CONFIG_SMALL("Transform the frames, "
  313.                                           "pass 2 of 2 for stabilization "
  314.                                           "(see vidstabdetect for pass 1)."),
  315.     .priv_size     = sizeof(TransformContext),
  316.     .init          = init,
  317.     .uninit        = uninit,
  318.     .query_formats = query_formats,
  319.     .inputs        = avfilter_vf_vidstabtransform_inputs,
  320.     .outputs       = avfilter_vf_vidstabtransform_outputs,
  321.     .priv_class    = &vidstabtransform_class,
  322. };
  323.