diff options
| author | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2011-05-29 00:00:26 +0400 |
|---|---|---|
| committer | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2011-06-19 21:06:55 +0400 |
| commit | 15f03725ced37e3b99e76f63f52cb92e10f134e2 (patch) | |
| tree | c3615129590315c08798b160cff04e6fe19bfddd /libavfilter | |
| parent | dd2793c880ea72c9aacda8245596694d9b4f378c (diff) | |
lavfi: add negate filter
This filter is a simple wrapper around the LUT filter.
Diffstat (limited to 'libavfilter')
| -rw-r--r-- | libavfilter/Makefile | 1 | ||||
| -rw-r--r-- | libavfilter/allfilters.c | 1 | ||||
| -rw-r--r-- | libavfilter/avfilter.h | 2 | ||||
| -rw-r--r-- | libavfilter/vf_lut.c | 23 |
4 files changed, 26 insertions, 1 deletions
diff --git a/libavfilter/Makefile b/libavfilter/Makefile index 8f8abe729e..c594573798 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -42,6 +42,7 @@ OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o OBJS-$(CONFIG_LUTRGB_FILTER) += vf_lut.o OBJS-$(CONFIG_LUTYUV_FILTER) += vf_lut.o OBJS-$(CONFIG_MP_FILTER) += vf_mp.o +OBJS-$(CONFIG_NEGATE_FILTER) += vf_lut.o OBJS-$(CONFIG_NOFORMAT_FILTER) += vf_format.o OBJS-$(CONFIG_NULL_FILTER) += vf_null.o OBJS-$(CONFIG_OCV_FILTER) += vf_libopencv.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 3c4a6e17b4..2983f6bd8c 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -58,6 +58,7 @@ void avfilter_register_all(void) REGISTER_FILTER (LUTRGB, lutrgb, vf); REGISTER_FILTER (LUTYUV, lutyuv, vf); REGISTER_FILTER (MP, mp, vf); + REGISTER_FILTER (NEGATE, negate, vf); REGISTER_FILTER (NOFORMAT, noformat, vf); REGISTER_FILTER (NULL, null, vf); REGISTER_FILTER (OCV, ocv, vf); diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h index 6dd5020ecf..bcfc4c6df9 100644 --- a/libavfilter/avfilter.h +++ b/libavfilter/avfilter.h @@ -26,7 +26,7 @@ #include "libavutil/samplefmt.h" #define LIBAVFILTER_VERSION_MAJOR 2 -#define LIBAVFILTER_VERSION_MINOR 19 +#define LIBAVFILTER_VERSION_MINOR 20 #define LIBAVFILTER_VERSION_MICRO 0 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \ diff --git a/libavfilter/vf_lut.c b/libavfilter/vf_lut.c index 895293d12d..792e274c33 100644 --- a/libavfilter/vf_lut.c +++ b/libavfilter/vf_lut.c @@ -67,6 +67,7 @@ typedef struct { int is_rgb, is_yuv; int rgba_map[4]; int step; + int negate_alpha; /* only used by negate */ } LutContext; #define Y 0 @@ -366,3 +367,25 @@ static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir) DEFINE_LUT_FILTER(lut, "Compute and apply a lookup table to the RGB/YUV input video.", init); DEFINE_LUT_FILTER(lutyuv, "Compute and apply a lookup table to the YUV input video.", init); DEFINE_LUT_FILTER(lutrgb, "Compute and apply a lookup table to the RGB input video.", init); + +#if CONFIG_NEGATE_FILTER + +static int negate_init(AVFilterContext *ctx, const char *args, void *opaque) +{ + LutContext *lut = ctx->priv; + char lut_params[1024]; + + if (args) + sscanf(args, "%d", &lut->negate_alpha); + + av_log(ctx, AV_LOG_INFO, "negate_alpha:%d\n", lut->negate_alpha); + + snprintf(lut_params, sizeof(lut_params), "c0=negval:c1=negval:c2=negval:a=%s", + lut->negate_alpha ? "negval" : "val"); + + return init(ctx, lut_params, opaque); +} + +DEFINE_LUT_FILTER(negate, "Negate input video.", negate_init); + +#endif |