/*
- * copyright (c) 2010 Stefano Sabatini
+ * Copyright (c) 2010 Stefano Sabatini
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* libopencv wrapper functions
*/
+/* #define DEBUG */
+
#include <opencv/cv.h>
-#include <opencv/cxtypes.h>
+#include <opencv/cxcore.h>
+#include "libavutil/avstring.h"
+#include "libavutil/file.h"
#include "avfilter.h"
+#include "formats.h"
+#include "video.h"
static void fill_iplimage_from_picref(IplImage *img, const AVFilterBufferRef *picref, enum PixelFormat pixfmt)
{
PIX_FMT_BGR24, PIX_FMT_BGRA, PIX_FMT_GRAY8, PIX_FMT_NONE
};
- avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
-#if CONFIG_OCV_SMOOTH_FILTER
+typedef struct {
+ const char *name;
+ int (*init)(AVFilterContext *ctx, const char *args);
+ void (*uninit)(AVFilterContext *ctx);
+ void (*end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg);
+ void *priv;
+} OCVContext;
typedef struct {
int type;
double param3, param4;
} SmoothContext;
-static av_cold int smooth_init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int smooth_init(AVFilterContext *ctx, const char *args)
{
- SmoothContext *smooth = ctx->priv;
+ OCVContext *ocv = ctx->priv;
+ SmoothContext *smooth = ocv->priv;
char type_str[128] = "gaussian";
smooth->param1 = 3;
return AVERROR(EINVAL);
}
- av_log(ctx, AV_LOG_INFO, "type:%s param1:%d param2:%d param3:%f param4:%f\n",
+ av_log(ctx, AV_LOG_VERBOSE, "type:%s param1:%d param2:%d param3:%f param4:%f\n",
type_str, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
return 0;
}
-static void smooth_end_frame(AVFilterLink *inlink)
+static void smooth_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
+{
+ OCVContext *ocv = ctx->priv;
+ SmoothContext *smooth = ocv->priv;
+ cvSmooth(inimg, outimg, smooth->type, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
+}
+
+static int read_shape_from_file(int *cols, int *rows, int **values, const char *filename,
+ void *log_ctx)
+{
+ uint8_t *buf, *p, *pend;
+ size_t size;
+ int ret, i, j, w;
+
+ if ((ret = av_file_map(filename, &buf, &size, 0, log_ctx)) < 0)
+ return ret;
+
+ /* prescan file to get the number of lines and the maximum width */
+ w = 0;
+ for (i = 0; i < size; i++) {
+ if (buf[i] == '\n') {
+ if (*rows == INT_MAX) {
+ av_log(log_ctx, AV_LOG_ERROR, "Overflow on the number of rows in the file\n");
+ return AVERROR_INVALIDDATA;
+ }
+ ++(*rows);
+ *cols = FFMAX(*cols, w);
+ w = 0;
+ } else if (w == INT_MAX) {
+ av_log(log_ctx, AV_LOG_ERROR, "Overflow on the number of columns in the file\n");
+ return AVERROR_INVALIDDATA;
+ }
+ w++;
+ }
+ if (*rows > (SIZE_MAX / sizeof(int) / *cols)) {
+ av_log(log_ctx, AV_LOG_ERROR, "File with size %dx%d is too big\n",
+ *rows, *cols);
+ return AVERROR_INVALIDDATA;
+ }
+ if (!(*values = av_mallocz(sizeof(int) * *rows * *cols)))
+ return AVERROR(ENOMEM);
+
+ /* fill *values */
+ p = buf;
+ pend = buf + size-1;
+ for (i = 0; i < *rows; i++) {
+ for (j = 0;; j++) {
+ if (p > pend || *p == '\n') {
+ p++;
+ break;
+ } else
+ (*values)[*cols*i + j] = !!isgraph(*(p++));
+ }
+ }
+ av_file_unmap(buf, size);
+
+#ifdef DEBUG
+ {
+ char *line;
+ if (!(line = av_malloc(*cols + 1)))
+ return AVERROR(ENOMEM);
+ for (i = 0; i < *rows; i++) {
+ for (j = 0; j < *cols; j++)
+ line[j] = (*values)[i * *cols + j] ? '@' : ' ';
+ line[j] = 0;
+ av_log(log_ctx, AV_LOG_DEBUG, "%3d: %s\n", i, line);
+ }
+ av_free(line);
+ }
+#endif
+
+ return 0;
+}
+
+static int parse_iplconvkernel(IplConvKernel **kernel, char *buf, void *log_ctx)
+{
+ char shape_filename[128] = "", shape_str[32] = "rect";
+ int cols = 0, rows = 0, anchor_x = 0, anchor_y = 0, shape = CV_SHAPE_RECT;
+ int *values = NULL, ret;
+
+ sscanf(buf, "%dx%d+%dx%d/%32[^=]=%127s", &cols, &rows, &anchor_x, &anchor_y, shape_str, shape_filename);
+
+ if (!strcmp(shape_str, "rect" )) shape = CV_SHAPE_RECT;
+ else if (!strcmp(shape_str, "cross" )) shape = CV_SHAPE_CROSS;
+ else if (!strcmp(shape_str, "ellipse")) shape = CV_SHAPE_ELLIPSE;
+ else if (!strcmp(shape_str, "custom" )) {
+ shape = CV_SHAPE_CUSTOM;
+ if ((ret = read_shape_from_file(&cols, &rows, &values, shape_filename, log_ctx)) < 0)
+ return ret;
+ } else {
+ av_log(log_ctx, AV_LOG_ERROR,
+ "Shape unspecified or type '%s' unknown\n.", shape_str);
+ return AVERROR(EINVAL);
+ }
+
+ if (rows <= 0 || cols <= 0) {
+ av_log(log_ctx, AV_LOG_ERROR,
+ "Invalid non-positive values for shape size %dx%d\n", cols, rows);
+ return AVERROR(EINVAL);
+ }
+
+ if (anchor_x < 0 || anchor_y < 0 || anchor_x >= cols || anchor_y >= rows) {
+ av_log(log_ctx, AV_LOG_ERROR,
+ "Shape anchor %dx%d is not inside the rectangle with size %dx%d.\n",
+ anchor_x, anchor_y, cols, rows);
+ return AVERROR(EINVAL);
+ }
+
+ *kernel = cvCreateStructuringElementEx(cols, rows, anchor_x, anchor_y, shape, values);
+ av_freep(&values);
+ if (!*kernel)
+ return AVERROR(ENOMEM);
+
+ av_log(log_ctx, AV_LOG_VERBOSE, "Structuring element: w:%d h:%d x:%d y:%d shape:%s\n",
+ rows, cols, anchor_x, anchor_y, shape_str);
+ return 0;
+}
+
+typedef struct {
+ int nb_iterations;
+ IplConvKernel *kernel;
+} DilateContext;
+
+static av_cold int dilate_init(AVFilterContext *ctx, const char *args)
{
- SmoothContext *smooth = inlink->dst->priv;
- AVFilterLink *outlink = inlink->dst->outputs[0];
+ OCVContext *ocv = ctx->priv;
+ DilateContext *dilate = ocv->priv;
+ char default_kernel_str[] = "3x3+0x0/rect";
+ char *kernel_str;
+ const char *buf = args;
+ int ret;
+
+ dilate->nb_iterations = 1;
+
+ if (args)
+ kernel_str = av_get_token(&buf, ":");
+ if ((ret = parse_iplconvkernel(&dilate->kernel,
+ *kernel_str ? kernel_str : default_kernel_str,
+ ctx)) < 0)
+ return ret;
+ av_free(kernel_str);
+
+ sscanf(buf, ":%d", &dilate->nb_iterations);
+ av_log(ctx, AV_LOG_VERBOSE, "iterations_nb:%d\n", dilate->nb_iterations);
+ if (dilate->nb_iterations <= 0) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid non-positive value '%d' for nb_iterations\n",
+ dilate->nb_iterations);
+ return AVERROR(EINVAL);
+ }
+ return 0;
+}
+
+static av_cold void dilate_uninit(AVFilterContext *ctx)
+{
+ OCVContext *ocv = ctx->priv;
+ DilateContext *dilate = ocv->priv;
+
+ cvReleaseStructuringElement(&dilate->kernel);
+}
+
+static void dilate_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
+{
+ OCVContext *ocv = ctx->priv;
+ DilateContext *dilate = ocv->priv;
+ cvDilate(inimg, outimg, dilate->kernel, dilate->nb_iterations);
+}
+
+static void erode_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
+{
+ OCVContext *ocv = ctx->priv;
+ DilateContext *dilate = ocv->priv;
+ cvErode(inimg, outimg, dilate->kernel, dilate->nb_iterations);
+}
+
+typedef struct {
+ const char *name;
+ size_t priv_size;
+ int (*init)(AVFilterContext *ctx, const char *args);
+ void (*uninit)(AVFilterContext *ctx);
+ void (*end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg);
+} OCVFilterEntry;
+
+static OCVFilterEntry ocv_filter_entries[] = {
+ { "dilate", sizeof(DilateContext), dilate_init, dilate_uninit, dilate_end_frame_filter },
+ { "erode", sizeof(DilateContext), dilate_init, dilate_uninit, erode_end_frame_filter },
+ { "smooth", sizeof(SmoothContext), smooth_init, NULL, smooth_end_frame_filter },
+};
+
+static av_cold int init(AVFilterContext *ctx, const char *args)
+{
+ OCVContext *ocv = ctx->priv;
+ char name[128], priv_args[1024];
+ int i;
+ char c;
+
+ sscanf(args, "%127[^=:]%c%1023s", name, &c, priv_args);
+
+ for (i = 0; i < FF_ARRAY_ELEMS(ocv_filter_entries); i++) {
+ OCVFilterEntry *entry = &ocv_filter_entries[i];
+ if (!strcmp(name, entry->name)) {
+ ocv->name = entry->name;
+ ocv->init = entry->init;
+ ocv->uninit = entry->uninit;
+ ocv->end_frame_filter = entry->end_frame_filter;
+
+ if (!(ocv->priv = av_mallocz(entry->priv_size)))
+ return AVERROR(ENOMEM);
+ return ocv->init(ctx, priv_args);
+ }
+ }
+
+ av_log(ctx, AV_LOG_ERROR, "No libopencv filter named '%s'\n", name);
+ return AVERROR(EINVAL);
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ OCVContext *ocv = ctx->priv;
+
+ if (ocv->uninit)
+ ocv->uninit(ctx);
+ av_free(ocv->priv);
+ memset(ocv, 0, sizeof(*ocv));
+}
+
+static void end_frame(AVFilterLink *inlink)
+{
+ AVFilterContext *ctx = inlink->dst;
+ OCVContext *ocv = ctx->priv;
+ AVFilterLink *outlink= inlink->dst->outputs[0];
AVFilterBufferRef *inpicref = inlink ->cur_buf;
AVFilterBufferRef *outpicref = outlink->out_buf;
IplImage inimg, outimg;
fill_iplimage_from_picref(&inimg , inpicref , inlink->format);
fill_iplimage_from_picref(&outimg, outpicref, inlink->format);
- cvSmooth(&inimg, &outimg, smooth->type, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
+ ocv->end_frame_filter(ctx, &inimg, &outimg);
fill_picref_from_iplimage(outpicref, &outimg, inlink->format);
- avfilter_unref_buffer(inpicref);
- avfilter_draw_slice(outlink, 0, outlink->h, 1);
- avfilter_end_frame(outlink);
- avfilter_unref_buffer(outpicref);
+ ff_draw_slice(outlink, 0, outlink->h, 1);
+ ff_end_frame(outlink);
}
-AVFilter avfilter_vf_ocv_smooth = {
- .name = "ocv_smooth",
- .description = NULL_IF_CONFIG_SMALL("Apply smooth transform using libopencv."),
+AVFilter avfilter_vf_ocv = {
+ .name = "ocv",
+ .description = NULL_IF_CONFIG_SMALL("Apply transform using libopencv."),
- .priv_size = sizeof(SmoothContext),
+ .priv_size = sizeof(OCVContext),
.query_formats = query_formats,
- .init = smooth_init,
-
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .draw_slice = null_draw_slice,
- .end_frame = smooth_end_frame,
- .min_perms = AV_PERM_READ },
- { .name = NULL}},
-
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO, },
- { .name = NULL}},
-};
+ .init = init,
+ .uninit = uninit,
-#endif /* CONFIG_OCV_SMOOTH_FILTER */
+ .inputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .draw_slice = null_draw_slice,
+ .end_frame = end_frame,
+ .min_perms = AV_PERM_READ },
+ { .name = NULL}},
+
+ .outputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO, },
+ { .name = NULL}},
+};
projects / ffmpeg / blobdiff