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Redesign the libopencv wrapper to make it more generic. Accept both
FILTERNAME=ARGS and FILTERNAME:ARGS syntax. The same filter class will be used for managing all the libopencv filtering functions. Originally committed as revision 26079 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -66,6 +66,7 @@ version <next>:
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- FLAC parser added
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- gradfun filter added
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- AMR-WB decoder
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- replace the ocv_smooth filter by a more generic ocv filter
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version 0.6:
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2
configure
vendored
2
configure
vendored
@ -1413,7 +1413,7 @@ cropdetect_filter_deps="gpl"
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frei0r_filter_deps="frei0r dlopen strtok_r"
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frei0r_src_filter_deps="frei0r dlopen strtok_r"
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hqdn3d_filter_deps="gpl"
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ocv_smooth_filter_deps="libopencv"
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ocv_filter_deps="libopencv"
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yadif_filter_deps="gpl"
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# libraries
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@ -512,14 +512,31 @@ input to the vflip filter.
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Pass the video source unchanged to the output.
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@section ocv_smooth
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@section ocv
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Apply smooth transform using libopencv.
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Apply video transform using libopencv.
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To enable this filter install libopencv library and headers and
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configure FFmpeg with --enable-libopencv.
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The filter accepts the following parameters:
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The filter takes the parameters: @var{filter_name}@{:=@}@var{filter_params}.
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@var{filter_name} is the name of the libopencv filter to apply.
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@var{filter_params} specifies the parameters to pass to the libopencv
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filter. If not specified the default values are assumed.
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Refer to the official libopencv documentation for more precise
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informations:
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@url{http://opencv.willowgarage.com/documentation/c/image_filtering.html}
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Follows the list of supported libopencv filters.
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@subsection smooth
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Smooth the input video.
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The filter takes the following parameters:
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@var{type}:@var{param1}:@var{param2}:@var{param3}:@var{param4}.
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@var{type} is the type of smooth filter to apply, and can be one of
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@ -535,9 +552,7 @@ The default value for @var{param1} is 3, the default value for the
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other parameters is 0.
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These parameters correspond to the parameters assigned to the
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libopencv function @code{cvSmooth}. Refer to the official libopencv
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documentation for the exact meaning of the parameters:
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@url{http://opencv.willowgarage.com/documentation/c/image_filtering.html}
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libopencv function @code{cvSmooth}.
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@section overlay
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@ -31,7 +31,7 @@ OBJS-$(CONFIG_HFLIP_FILTER) += vf_hflip.o
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OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o
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OBJS-$(CONFIG_NOFORMAT_FILTER) += vf_format.o
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OBJS-$(CONFIG_NULL_FILTER) += vf_null.o
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OBJS-$(CONFIG_OCV_SMOOTH_FILTER) += vf_libopencv.o
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OBJS-$(CONFIG_OCV_FILTER) += vf_libopencv.o
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OBJS-$(CONFIG_OVERLAY_FILTER) += vf_overlay.o
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OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
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OBJS-$(CONFIG_PIXDESCTEST_FILTER) += vf_pixdesctest.o
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@ -52,7 +52,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER (HQDN3D, hqdn3d, vf);
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REGISTER_FILTER (NOFORMAT, noformat, vf);
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REGISTER_FILTER (NULL, null, vf);
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REGISTER_FILTER (OCV_SMOOTH, ocv_smooth, vf);
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REGISTER_FILTER (OCV, ocv, vf);
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REGISTER_FILTER (OVERLAY, overlay, vf);
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REGISTER_FILTER (PAD, pad, vf);
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REGISTER_FILTER (PIXDESCTEST, pixdesctest, vf);
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@ -27,7 +27,7 @@
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#include "libavcore/samplefmt.h"
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#define LIBAVFILTER_VERSION_MAJOR 1
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#define LIBAVFILTER_VERSION_MINOR 69
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#define LIBAVFILTER_VERSION_MINOR 70
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#define LIBAVFILTER_VERSION_MICRO 0
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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@ -63,7 +63,13 @@ static int query_formats(AVFilterContext *ctx)
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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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const char *name;
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int (*init)(AVFilterContext *ctx, const char *args, void *opaque);
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void (*uninit)(AVFilterContext *ctx);
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void (*end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg);
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void *priv;
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} OCVContext;
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typedef struct {
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int type;
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@ -73,7 +79,8 @@ typedef struct {
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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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OCVContext *ocv = ctx->priv;
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SmoothContext *smooth = ocv->priv;
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char type_str[128] = "gaussian";
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smooth->param1 = 3;
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@ -113,17 +120,74 @@ static av_cold int smooth_init(AVFilterContext *ctx, const char *args, void *opa
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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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static void smooth_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
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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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OCVContext *ocv = ctx->priv;
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SmoothContext *smooth = ocv->priv;
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cvSmooth(inimg, outimg, smooth->type, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
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}
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typedef struct {
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const char *name;
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size_t priv_size;
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int (*init)(AVFilterContext *ctx, const char *args, void *opaque);
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void (*uninit)(AVFilterContext *ctx);
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void (*end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg);
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} OCVFilterEntry;
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static OCVFilterEntry ocv_filter_entries[] = {
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{ "smooth", sizeof(SmoothContext), smooth_init, NULL, smooth_end_frame_filter },
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};
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static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
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{
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OCVContext *ocv = ctx->priv;
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char name[128], priv_args[1024];
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int i;
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char c;
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sscanf(args, "%127[^=:]%c%1023s", name, &c, priv_args);
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for (i = 0; i < FF_ARRAY_ELEMS(ocv_filter_entries); i++) {
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OCVFilterEntry *entry = &ocv_filter_entries[i];
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if (!strcmp(name, entry->name)) {
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ocv->name = entry->name;
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ocv->init = entry->init;
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ocv->uninit = entry->uninit;
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ocv->end_frame_filter = entry->end_frame_filter;
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if (!(ocv->priv = av_mallocz(entry->priv_size)))
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return AVERROR(ENOMEM);
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return ocv->init(ctx, priv_args, opaque);
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}
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}
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av_log(ctx, AV_LOG_ERROR, "No libopencv filter named '%s'\n", name);
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return AVERROR(EINVAL);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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OCVContext *ocv = ctx->priv;
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if (ocv->uninit)
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ocv->uninit(ctx);
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av_free(ocv->priv);
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memset(ocv, 0, sizeof(*ocv));
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}
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static void end_frame(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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OCVContext *ocv = ctx->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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ocv->end_frame_filter(ctx, &inimg, &outimg);
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fill_picref_from_iplimage(outpicref, &outimg, inlink->format);
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avfilter_unref_buffer(inpicref);
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@ -132,19 +196,20 @@ static void smooth_end_frame(AVFilterLink *inlink)
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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 = NULL_IF_CONFIG_SMALL("Apply smooth transform using libopencv."),
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AVFilter avfilter_vf_ocv = {
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.name = "ocv",
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.description = NULL_IF_CONFIG_SMALL("Apply transform using libopencv."),
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.priv_size = sizeof(SmoothContext),
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.priv_size = sizeof(OCVContext),
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.query_formats = query_formats,
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.init = smooth_init,
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.init = init,
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.uninit = uninit,
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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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.end_frame = end_frame,
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.min_perms = AV_PERM_READ },
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{ .name = NULL}},
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@ -152,5 +217,3 @@ AVFilter avfilter_vf_ocv_smooth = {
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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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