mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 25118 to svn://svn.ffmpeg.org/ffmpeg/trunkoldabi
Stefano Sabatini
15 years ago
parent
c12f7b2d2c
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6ebf0bfc17
7 changed files with 196 additions and 2 deletions
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/*
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* copyright Stefano Sabatini 2010 |
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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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/**
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* @file |
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* libopencv wrapper functions |
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*/ |
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#include "opencv/cv.h" |
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#include "opencv/cxtypes.h" |
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#include "avfilter.h" |
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static void fill_iplimage_from_picref(IplImage *img, const AVFilterBufferRef *picref, enum PixelFormat pixfmt) |
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{ |
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IplImage *tmpimg; |
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int depth, channels_nb; |
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if (pixfmt == PIX_FMT_GRAY8) { depth = IPL_DEPTH_8U; channels_nb = 1; } |
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else if (pixfmt == PIX_FMT_BGRA) { depth = IPL_DEPTH_8U; channels_nb = 4; } |
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else if (pixfmt == PIX_FMT_BGR24) { depth = IPL_DEPTH_8U; channels_nb = 3; } |
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else return; |
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tmpimg = cvCreateImageHeader((CvSize){picref->video->w, picref->video->h}, depth, channels_nb); |
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*img = *tmpimg; |
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img->imageData = img->imageDataOrigin = picref->data[0]; |
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img->dataOrder = IPL_DATA_ORDER_PIXEL; |
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img->origin = IPL_ORIGIN_TL; |
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img->widthStep = picref->linesize[0]; |
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} |
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static void fill_picref_from_iplimage(AVFilterBufferRef *picref, const IplImage *img, enum PixelFormat pixfmt) |
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{ |
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picref->linesize[0] = img->widthStep; |
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picref->data[0] = img->imageData; |
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} |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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static const enum PixelFormat pix_fmts[] = { |
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PIX_FMT_BGR24, PIX_FMT_BGRA, PIX_FMT_GRAY8, PIX_FMT_NONE |
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}; |
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avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts)); |
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return 0; |
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} |
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static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { } |
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#if CONFIG_OCV_SMOOTH_FILTER |
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typedef struct { |
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int type; |
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int param1, param2; |
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double param3, param4; |
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} SmoothContext; |
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static av_cold int smooth_init(AVFilterContext *ctx, const char *args, void *opaque) |
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{ |
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SmoothContext *smooth = ctx->priv; |
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char type_str[128] = "gaussian"; |
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smooth->param1 = 3; |
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smooth->param2 = 0; |
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smooth->param3 = 0.0; |
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smooth->param4 = 0.0; |
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if (args) |
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sscanf(args, "%127[^:]:%d:%d:%lf:%lf", type_str, &smooth->param1, &smooth->param2, &smooth->param3, &smooth->param4); |
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if (!strcmp(type_str, "blur" )) smooth->type = CV_BLUR; |
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else if (!strcmp(type_str, "blur_no_scale")) smooth->type = CV_BLUR_NO_SCALE; |
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else if (!strcmp(type_str, "median" )) smooth->type = CV_MEDIAN; |
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else if (!strcmp(type_str, "gaussian" )) smooth->type = CV_GAUSSIAN; |
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else if (!strcmp(type_str, "bilateral" )) smooth->type = CV_BILATERAL; |
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else { |
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av_log(ctx, AV_LOG_ERROR, "Smoothing type '%s' unknown\n.", type_str); |
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return AVERROR(EINVAL); |
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} |
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if (smooth->param1 < 0 || !(smooth->param1%2)) { |
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av_log(ctx, AV_LOG_ERROR, |
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"Invalid value '%d' for param1, it has to be a positive odd number\n", |
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smooth->param1); |
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return AVERROR(EINVAL); |
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} |
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if ((smooth->type == CV_BLUR || smooth->type == CV_BLUR_NO_SCALE || smooth->type == CV_GAUSSIAN) && |
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(smooth->param2 < 0 || (smooth->param2 && !(smooth->param2%2)))) { |
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av_log(ctx, AV_LOG_ERROR, |
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"Invalid value '%d' for param2, it has to be zero or a positive odd number\n", |
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smooth->param2); |
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return AVERROR(EINVAL); |
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} |
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av_log(ctx, AV_LOG_INFO, "type:%s param1:%d param2:%d param3:%f param4:%f\n", |
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type_str, smooth->param1, smooth->param2, smooth->param3, smooth->param4); |
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return 0; |
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} |
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static void smooth_end_frame(AVFilterLink *inlink) |
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{ |
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SmoothContext *smooth = inlink->dst->priv; |
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AVFilterLink *outlink= inlink->dst->outputs[0]; |
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AVFilterBufferRef *inpicref = inlink ->cur_buf; |
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AVFilterBufferRef *outpicref = outlink->out_buf; |
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IplImage inimg, outimg; |
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fill_iplimage_from_picref(&inimg , inpicref , inlink->format); |
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fill_iplimage_from_picref(&outimg, outpicref, inlink->format); |
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cvSmooth(&inimg, &outimg, smooth->type, smooth->param1, smooth->param2, smooth->param3, smooth->param4); |
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fill_picref_from_iplimage(outpicref, &outimg, inlink->format); |
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avfilter_unref_buffer(inpicref); |
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avfilter_draw_slice(outlink, 0, outlink->h, 1); |
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avfilter_end_frame(outlink); |
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avfilter_unref_buffer(outpicref); |
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} |
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AVFilter avfilter_vf_ocv_smooth = { |
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.name = "ocv_smooth", |
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.description = "Apply smooth transform using libopencv.", |
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.priv_size = sizeof(SmoothContext), |
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.query_formats = query_formats, |
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.init = smooth_init, |
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.inputs = (AVFilterPad[]) {{ .name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.draw_slice = null_draw_slice, |
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.end_frame = smooth_end_frame, |
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.min_perms = AV_PERM_READ }, |
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{ .name = NULL}}, |
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.outputs = (AVFilterPad[]) {{ .name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, }, |
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{ .name = NULL}}, |
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}; |
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#endif /* CONFIG_OCV_SMOOTH_FILTER */ |
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