* libopencv wrapper functions
*/
-/* #define DEBUG */
-
#include <opencv/cv.h>
#include <opencv/cxcore.h>
#include "libavutil/avstring.h"
return 0;
}
-typedef struct {
+typedef struct OCVContext {
const AVClass *class;
char *name;
char *params;
void *priv;
} OCVContext;
-typedef struct {
+typedef struct SmoothContext {
int type;
int param1, param2;
double param3, param4;
static av_cold int smooth_init(AVFilterContext *ctx, const char *args)
{
- OCVContext *ocv = ctx->priv;
- SmoothContext *smooth = ocv->priv;
+ OCVContext *s = ctx->priv;
+ SmoothContext *smooth = s->priv;
char type_str[128] = "gaussian";
smooth->param1 = 3;
static void smooth_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
{
- OCVContext *ocv = ctx->priv;
- SmoothContext *smooth = ocv->priv;
+ OCVContext *s = ctx->priv;
+ SmoothContext *smooth = s->priv;
cvSmooth(inimg, outimg, smooth->type, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
}
{
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;
+ int *values = NULL, ret = 0;
sscanf(buf, "%dx%d+%dx%d/%32[^=]=%127s", &cols, &rows, &anchor_x, &anchor_y, shape_str, shape_filename);
} else {
av_log(log_ctx, AV_LOG_ERROR,
"Shape unspecified or type '%s' unknown.\n", shape_str);
- return AVERROR(EINVAL);
+ ret = AVERROR(EINVAL);
+ goto out;
}
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);
+ ret = AVERROR(EINVAL);
+ goto out;
}
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);
+ ret = AVERROR(EINVAL);
+ goto out;
}
*kernel = cvCreateStructuringElementEx(cols, rows, anchor_x, anchor_y, shape, values);
- av_freep(&values);
- if (!*kernel)
- return AVERROR(ENOMEM);
+ if (!*kernel) {
+ ret = AVERROR(ENOMEM);
+ goto out;
+ }
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;
+out:
+ av_freep(&values);
+ return ret;
}
-typedef struct {
+typedef struct DilateContext {
int nb_iterations;
IplConvKernel *kernel;
} DilateContext;
static av_cold int dilate_init(AVFilterContext *ctx, const char *args)
{
- OCVContext *ocv = ctx->priv;
- DilateContext *dilate = ocv->priv;
+ OCVContext *s = ctx->priv;
+ DilateContext *dilate = s->priv;
char default_kernel_str[] = "3x3+0x0/rect";
- char *kernel_str;
+ char *kernel_str = NULL;
const char *buf = args;
int ret;
dilate->nb_iterations = 1;
- if (args)
+ 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;
+ if (!kernel_str)
+ return AVERROR(ENOMEM);
+ }
+
+ ret = parse_iplconvkernel(&dilate->kernel,
+ (!kernel_str || !*kernel_str) ? default_kernel_str
+ : kernel_str,
+ ctx);
av_free(kernel_str);
+ if (ret < 0)
+ return ret;
sscanf(buf, "|%d", &dilate->nb_iterations);
av_log(ctx, AV_LOG_VERBOSE, "iterations_nb:%d\n", dilate->nb_iterations);
static av_cold void dilate_uninit(AVFilterContext *ctx)
{
- OCVContext *ocv = ctx->priv;
- DilateContext *dilate = ocv->priv;
+ OCVContext *s = ctx->priv;
+ DilateContext *dilate = s->priv;
cvReleaseStructuringElement(&dilate->kernel);
}
static void dilate_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
{
- OCVContext *ocv = ctx->priv;
- DilateContext *dilate = ocv->priv;
+ OCVContext *s = ctx->priv;
+ DilateContext *dilate = s->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;
+ OCVContext *s = ctx->priv;
+ DilateContext *dilate = s->priv;
cvErode(inimg, outimg, dilate->kernel, dilate->nb_iterations);
}
-typedef struct {
+typedef struct OCVFilterEntry {
const char *name;
size_t priv_size;
int (*init)(AVFilterContext *ctx, const char *args);
{ "smooth", sizeof(SmoothContext), smooth_init, NULL, smooth_end_frame_filter },
};
-static av_cold int init(AVFilterContext *ctx, const char *args)
+static av_cold int init(AVFilterContext *ctx)
{
- OCVContext *ocv = ctx->priv;
+ OCVContext *s = ctx->priv;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(ocv_filter_entries); i++) {
OCVFilterEntry *entry = &ocv_filter_entries[i];
- if (!strcmp(ocv->name, entry->name)) {
- ocv->init = entry->init;
- ocv->uninit = entry->uninit;
- ocv->end_frame_filter = entry->end_frame_filter;
+ if (!strcmp(s->name, entry->name)) {
+ s->init = entry->init;
+ s->uninit = entry->uninit;
+ s->end_frame_filter = entry->end_frame_filter;
- if (!(ocv->priv = av_mallocz(entry->priv_size)))
+ if (!(s->priv = av_mallocz(entry->priv_size)))
return AVERROR(ENOMEM);
- return ocv->init(ctx, ocv->params);
+ return s->init(ctx, s->params);
}
}
- av_log(ctx, AV_LOG_ERROR, "No libopencv filter named '%s'\n", ocv->name);
+ av_log(ctx, AV_LOG_ERROR, "No libopencv filter named '%s'\n", s->name);
return AVERROR(EINVAL);
}
static av_cold void uninit(AVFilterContext *ctx)
{
- OCVContext *ocv = ctx->priv;
+ OCVContext *s = ctx->priv;
- if (ocv->uninit)
- ocv->uninit(ctx);
- av_free(ocv->priv);
+ if (s->uninit)
+ s->uninit(ctx);
+ av_free(s->priv);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
- OCVContext *ocv = ctx->priv;
+ OCVContext *s = ctx->priv;
AVFilterLink *outlink= inlink->dst->outputs[0];
AVFrame *out;
IplImage inimg, outimg;
fill_iplimage_from_frame(&inimg , in , inlink->format);
fill_iplimage_from_frame(&outimg, out, inlink->format);
- ocv->end_frame_filter(ctx, &inimg, &outimg);
+ s->end_frame_filter(ctx, &inimg, &outimg);
fill_frame_from_iplimage(out, &outimg, inlink->format);
av_frame_free(&in);
{ NULL }
};
-AVFilter avfilter_vf_ocv = {
+AVFilter ff_vf_ocv = {
.name = "ocv",
.description = NULL_IF_CONFIG_SMALL("Apply transform using libopencv."),
projects / ffmpeg / blobdiff