diff options
author | Kevin Mitchell <kevmitch@gmail.com> | 2014-11-02 21:30:51 -0800 |
---|---|---|
committer | Michael Niedermayer <michaelni@gmx.at> | 2014-11-03 16:31:26 +0100 |
commit | fe6f5f2908ae9ac49e8f4f0aae66839f1557c61a (patch) | |
tree | cdbe2ad5d6246ea136c201f382684062fa841f44 /libavfilter/vf_idet.c | |
parent | 50138ea4f7b3df618b905f9540174387cded79c6 (diff) |
avfilter/vf_idet: add a "half_life" option for statistics
This can be useful for videos in which the interlacing pattern changes.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavfilter/vf_idet.c')
-rw-r--r-- | libavfilter/vf_idet.c | 82 |
1 files changed, 57 insertions, 25 deletions
diff --git a/libavfilter/vf_idet.c b/libavfilter/vf_idet.c index 6f99f39f00..01d7eca5a7 100644 --- a/libavfilter/vf_idet.c +++ b/libavfilter/vf_idet.c @@ -32,6 +32,7 @@ static const AVOption idet_options[] = { { "intl_thres", "set interlacing threshold", OFFSET(interlace_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.04}, -1, FLT_MAX, FLAGS }, { "prog_thres", "set progressive threshold", OFFSET(progressive_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.5}, -1, FLT_MAX, FLAGS }, + { "half_life", "half life of cumulative statistics", OFFSET(half_life), AV_OPT_TYPE_FLOAT, {.dbl = 0.0}, -1, INT_MAX, FLAGS }, { NULL } }; @@ -48,6 +49,24 @@ static const char *type2str(Type type) return NULL; } +#define PRECISION 1048576 + +static uint64_t uintpow(uint64_t b,unsigned int e) +{ + uint64_t r=1; + while(e--) r*=b; + return r; +} + +static int av_dict_set_fxp(AVDictionary **pm, const char *key, uint64_t value, unsigned int digits, + int flags) +{ + char valuestr[44]; + snprintf(valuestr, sizeof(valuestr), "%"PRId64".%0*"PRId64, + value / PRECISION, digits, ( value % PRECISION ) / ( PRECISION / uintpow(10,digits) )); + return av_dict_set(pm, key, valuestr, flags); +} + int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w) { int x; @@ -146,23 +165,32 @@ static void filter(AVFilterContext *ctx) idet->cur->interlaced_frame = 0; } - idet->prestat [ type] ++; - idet->poststat[idet->last_type] ++; + + + for(i=0; i<4; i++){ + idet->prestat [i] = (idet->decay_coefficient * idet->prestat [i]) / PRECISION; + idet->poststat[i] = (idet->decay_coefficient * idet->poststat[i]) / PRECISION; + } + + idet->total_prestat [ type] ++; + idet->prestat [ type] += PRECISION; + + idet->total_poststat[idet->last_type] ++; + idet->poststat [idet->last_type] += PRECISION; av_log(ctx, AV_LOG_DEBUG, "Single frame:%12s, Multi frame:%12s\n", type2str(type), type2str(idet->last_type)); - av_dict_set (metadata, "lavfi.idet.single.current_frame", type2str(type), 0); - av_dict_set_int(metadata, "lavfi.idet.single.tff", idet->prestat[TFF], 0); - av_dict_set_int(metadata, "lavfi.idet.single.bff", idet->prestat[BFF], 0); - av_dict_set_int(metadata, "lavfi.idet.single.progressive", idet->prestat[PROGRESSIVE], 0); - av_dict_set_int(metadata, "lavfi.idet.single.undetermined", idet->prestat[UNDETERMINED], 0); + av_dict_set (metadata, "lavfi.idet.single.current_frame", type2str(type), 0); + av_dict_set_fxp(metadata, "lavfi.idet.single.tff", idet->prestat[TFF], 2 , 0); + av_dict_set_fxp(metadata, "lavfi.idet.single.bff", idet->prestat[BFF], 2, 0); + av_dict_set_fxp(metadata, "lavfi.idet.single.progressive", idet->prestat[PROGRESSIVE], 2, 0); + av_dict_set_fxp(metadata, "lavfi.idet.single.undetermined", idet->prestat[UNDETERMINED], 2, 0); av_dict_set (metadata, "lavfi.idet.multiple.current_frame", type2str(idet->last_type), 0); - av_dict_set_int(metadata, "lavfi.idet.multiple.tff", idet->poststat[TFF], 0); - av_dict_set_int(metadata, "lavfi.idet.multiple.bff", idet->poststat[BFF], 0); - av_dict_set_int(metadata, "lavfi.idet.multiple.progressive", idet->poststat[PROGRESSIVE], 0); - av_dict_set_int(metadata, "lavfi.idet.multiple.undetermined", idet->poststat[UNDETERMINED], 0); - + av_dict_set_fxp(metadata, "lavfi.idet.multiple.tff", idet->poststat[TFF], 2, 0); + av_dict_set_fxp(metadata, "lavfi.idet.multiple.bff", idet->poststat[BFF], 2, 0); + av_dict_set_fxp(metadata, "lavfi.idet.multiple.progressive", idet->poststat[PROGRESSIVE], 2, 0); + av_dict_set_fxp(metadata, "lavfi.idet.multiple.undetermined", idet->poststat[UNDETERMINED], 2, 0); } static int filter_frame(AVFilterLink *link, AVFrame *picref) @@ -228,18 +256,18 @@ static av_cold void uninit(AVFilterContext *ctx) { IDETContext *idet = ctx->priv; - av_log(ctx, AV_LOG_INFO, "Single frame detection: TFF:%d BFF:%d Progressive:%d Undetermined:%d\n", - idet->prestat[TFF], - idet->prestat[BFF], - idet->prestat[PROGRESSIVE], - idet->prestat[UNDETERMINED] - ); - av_log(ctx, AV_LOG_INFO, "Multi frame detection: TFF:%d BFF:%d Progressive:%d Undetermined:%d\n", - idet->poststat[TFF], - idet->poststat[BFF], - idet->poststat[PROGRESSIVE], - idet->poststat[UNDETERMINED] - ); + av_log(ctx, AV_LOG_INFO, "Single frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n", + idet->total_prestat[TFF], + idet->total_prestat[BFF], + idet->total_prestat[PROGRESSIVE], + idet->total_prestat[UNDETERMINED] + ); + av_log(ctx, AV_LOG_INFO, "Multi frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n", + idet->total_poststat[TFF], + idet->total_poststat[BFF], + idet->total_poststat[PROGRESSIVE], + idet->total_poststat[UNDETERMINED] + ); av_frame_free(&idet->prev); av_frame_free(&idet->cur ); @@ -290,6 +318,11 @@ static av_cold int init(AVFilterContext *ctx) idet->last_type = UNDETERMINED; memset(idet->history, UNDETERMINED, HIST_SIZE); + if( idet->half_life > 0 ) + idet->decay_coefficient = (uint64_t) round( PRECISION * pow(2.0,-1.0 / idet->half_life) ); + else + idet->decay_coefficient = PRECISION; + idet->filter_line = ff_idet_filter_line_c; if (ARCH_X86) @@ -298,7 +331,6 @@ static av_cold int init(AVFilterContext *ctx) return 0; } - static const AVFilterPad idet_inputs[] = { { .name = "default", |