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| author | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2011-05-28 22:00:26 +0200 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2011-10-17 18:05:41 +0200 |
| commit | 171868e25a231ff06864e9f37400680148af10b4 (patch) | |
| tree | ff44d96374044e37f782481c0cdd9d85dffb2a08 /libavfilter | |
| parent | 8fe0c527f33fe6d2e89d62a23ae912553572452b (diff) | |
| download | ffmpeg-171868e25a231ff06864e9f37400680148af10b4.tar.gz | |
lavfi: add negate filter
This filter is a simple wrapper around the LUT filter.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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 9659fd692f..e2285e4d39 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -36,6 +36,7 @@ OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o OBJS-$(CONFIG_LUTRGB_FILTER) += vf_lut.o OBJS-$(CONFIG_LUTYUV_FILTER) += vf_lut.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 1357322302..ba853c7178 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -57,6 +57,7 @@ void avfilter_register_all(void) REGISTER_FILTER (LUT, lut, vf); REGISTER_FILTER (LUTRGB, lutrgb, vf); REGISTER_FILTER (LUTYUV, lutyuv, 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 d4c03792da..66237c56b4 100644 --- a/libavfilter/avfilter.h +++ b/libavfilter/avfilter.h @@ -29,7 +29,7 @@ #include "libavutil/rational.h" #define LIBAVFILTER_VERSION_MAJOR 2 -#define LIBAVFILTER_VERSION_MINOR 8 +#define LIBAVFILTER_VERSION_MINOR 9 #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 d7fab5e17d..7f3e913945 100644 --- a/libavfilter/vf_lut.c +++ b/libavfilter/vf_lut.c @@ -69,6 +69,7 @@ typedef struct { int is_rgb, is_yuv; int rgba_map[4]; int step; + int negate_alpha; /* only used by negate */ } LutContext; #define Y 0 @@ -369,3 +370,25 @@ DEFINE_LUT_FILTER(lutyuv, "Compute and apply a lookup table to the YUV input vid #if CONFIG_LUTRGB_FILTER DEFINE_LUT_FILTER(lutrgb, "Compute and apply a lookup table to the RGB input video.", init); #endif + +#if CONFIG_NEGATE_FILTER + +static int negate_init(AVFilterContext *ctx, const char *args, void *opaque) +{ + LutContext *lut = ctx->priv; + char lut_params[64]; + + if (args) + sscanf(args, "%d", &lut->negate_alpha); + + av_log(ctx, AV_LOG_DEBUG, "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 |