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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Copyright (C) 2012 Michael Niedermayer |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #include |
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| 22 | |||
| 23 | #include "libavutil/cpu.h" |
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| 24 | #include "libavutil/common.h" |
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| 25 | #include "libavutil/opt.h" |
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| 26 | #include "internal.h" |
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| 27 | #include "vf_idet.h" |
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| 28 | |||
| 29 | #define OFFSET(x) offsetof(IDETContext, x) |
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| 30 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
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| 31 | |||
| 32 | static const AVOption idet_options[] = { |
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| 33 | { "intl_thres", "set interlacing threshold", OFFSET(interlace_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.04}, -1, FLT_MAX, FLAGS }, |
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| 34 | { "prog_thres", "set progressive threshold", OFFSET(progressive_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.5}, -1, FLT_MAX, FLAGS }, |
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| 35 | { "rep_thres", "set repeat threshold", OFFSET(repeat_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 3.0}, -1, FLT_MAX, FLAGS }, |
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| 36 | { "half_life", "half life of cumulative statistics", OFFSET(half_life), AV_OPT_TYPE_FLOAT, {.dbl = 0.0}, -1, INT_MAX, FLAGS }, |
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| 37 | { "analyze_interlaced_flag", "set number of frames to use to determine if the interlace flag is accurate", OFFSET(analyze_interlaced_flag), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, FLAGS }, |
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| 38 | { NULL } |
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| 39 | }; |
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| 40 | |||
| 41 | AVFILTER_DEFINE_CLASS(idet); |
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| 42 | |||
| 43 | static const char *type2str(Type type) |
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| 44 | { |
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| 45 | switch(type) { |
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| 46 | case TFF : return "tff"; |
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| 47 | case BFF : return "bff"; |
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| 48 | case PROGRESSIVE : return "progressive"; |
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| 49 | case UNDETERMINED : return "undetermined"; |
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| 50 | } |
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| 51 | return NULL; |
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| 52 | } |
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| 53 | |||
| 54 | #define PRECISION 1048576 |
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| 55 | |||
| 56 | static uint64_t uintpow(uint64_t b,unsigned int e) |
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| 57 | { |
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| 58 | uint64_t r=1; |
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| 59 | while(e--) r*=b; |
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| 60 | return r; |
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| 61 | } |
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| 62 | |||
| 63 | static int av_dict_set_fxp(AVDictionary **pm, const char *key, uint64_t value, unsigned int digits, |
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| 64 | int flags) |
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| 65 | { |
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| 66 | char valuestr[44]; |
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| 67 | uint64_t print_precision = uintpow(10, digits); |
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| 68 | |||
| 69 | value = av_rescale(value, print_precision, PRECISION); |
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| 70 | |||
| 71 | snprintf(valuestr, sizeof(valuestr), "%"PRId64".%0*"PRId64, |
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| 72 | value / print_precision, digits, value % print_precision); |
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| 73 | |||
| 74 | return av_dict_set(pm, key, valuestr, flags); |
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| 75 | } |
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| 76 | |||
| 77 | static const char *rep2str(RepeatedField repeated_field) |
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| 78 | { |
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| 79 | switch(repeated_field) { |
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| 80 | case REPEAT_NONE : return "neither"; |
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| 81 | case REPEAT_TOP : return "top"; |
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| 82 | case REPEAT_BOTTOM : return "bottom"; |
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| 83 | } |
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| 84 | return NULL; |
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| 85 | } |
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| 86 | |||
| 87 | int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w) |
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| 88 | { |
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| 89 | int x; |
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| 90 | int ret=0; |
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| 91 | |||
| 92 | for(x=0; x |
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| 93 | int v = (*a++ + *c++) - 2 * *b++; |
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| 94 | ret += FFABS(v); |
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| 95 | } |
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| 96 | |||
| 97 | return ret; |
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| 98 | } |
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| 99 | |||
| 100 | int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w) |
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| 101 | { |
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| 102 | int x; |
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| 103 | int ret=0; |
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| 104 | |||
| 105 | for(x=0; x |
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| 106 | int v = (*a++ + *c++) - 2 * *b++; |
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| 107 | ret += FFABS(v); |
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| 108 | } |
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| 109 | |||
| 110 | return ret; |
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| 111 | } |
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| 112 | |||
| 113 | static void filter(AVFilterContext *ctx) |
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| 114 | { |
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| 115 | IDETContext *idet = ctx->priv; |
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| 116 | int y, i; |
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| 117 | int64_t alpha[2]={0}; |
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| 118 | int64_t delta=0; |
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| 119 | int64_t gamma[2]={0}; |
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| 120 | Type type, best_type; |
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| 121 | RepeatedField repeat; |
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| 122 | int match = 0; |
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| 123 | AVDictionary **metadata = avpriv_frame_get_metadatap(idet->cur); |
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| 124 | |||
| 125 | for (i = 0; i < idet->csp->nb_components; i++) { |
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| 126 | int w = idet->cur->width; |
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| 127 | int h = idet->cur->height; |
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| 128 | int refs = idet->cur->linesize[i]; |
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| 129 | |||
| 130 | if (i && i<3) { |
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| 131 | w = FF_CEIL_RSHIFT(w, idet->csp->log2_chroma_w); |
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| 132 | h = FF_CEIL_RSHIFT(h, idet->csp->log2_chroma_h); |
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| 133 | } |
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| 134 | |||
| 135 | for (y = 2; y < h - 2; y++) { |
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| 136 | uint8_t *prev = &idet->prev->data[i][y*refs]; |
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| 137 | uint8_t *cur = &idet->cur ->data[i][y*refs]; |
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| 138 | uint8_t *next = &idet->next->data[i][y*refs]; |
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| 139 | alpha[ y &1] += idet->filter_line(cur-refs, prev, cur+refs, w); |
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| 140 | alpha[(y^1)&1] += idet->filter_line(cur-refs, next, cur+refs, w); |
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| 141 | delta += idet->filter_line(cur-refs, cur, cur+refs, w); |
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| 142 | gamma[(y^1)&1] += idet->filter_line(cur , prev, cur , w); |
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| 143 | } |
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| 144 | } |
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| 145 | |||
| 146 | if (alpha[0] > idet->interlace_threshold * alpha[1]){ |
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| 147 | type = TFF; |
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| 148 | }else if(alpha[1] > idet->interlace_threshold * alpha[0]){ |
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| 149 | type = BFF; |
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| 150 | }else if(alpha[1] > idet->progressive_threshold * delta){ |
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| 151 | type = PROGRESSIVE; |
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| 152 | }else{ |
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| 153 | type = UNDETERMINED; |
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| 154 | } |
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| 155 | |||
| 156 | if ( gamma[0] > idet->repeat_threshold * gamma[1] ){ |
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| 157 | repeat = REPEAT_TOP; |
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| 158 | } else if ( gamma[1] > idet->repeat_threshold * gamma[0] ){ |
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| 159 | repeat = REPEAT_BOTTOM; |
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| 160 | } else { |
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| 161 | repeat = REPEAT_NONE; |
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| 162 | } |
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| 163 | |||
| 164 | memmove(idet->history+1, idet->history, HIST_SIZE-1); |
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| 165 | idet->history[0] = type; |
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| 166 | best_type = UNDETERMINED; |
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| 167 | for(i=0; i |
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| 168 | if(idet->history[i] != UNDETERMINED){ |
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| 169 | if(best_type == UNDETERMINED) |
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| 170 | best_type = idet->history[i]; |
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| 171 | |||
| 172 | if(idet->history[i] == best_type) { |
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| 173 | match++; |
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| 174 | }else{ |
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| 175 | match=0; |
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| 176 | break; |
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| 177 | } |
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| 178 | } |
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| 179 | } |
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| 180 | if(idet->last_type == UNDETERMINED){ |
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| 181 | if(match ) idet->last_type = best_type; |
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| 182 | }else{ |
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| 183 | if(match>2) idet->last_type = best_type; |
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| 184 | } |
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| 185 | |||
| 186 | if (idet->last_type == TFF){ |
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| 187 | idet->cur->top_field_first = 1; |
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| 188 | idet->cur->interlaced_frame = 1; |
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| 189 | }else if(idet->last_type == BFF){ |
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| 190 | idet->cur->top_field_first = 0; |
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| 191 | idet->cur->interlaced_frame = 1; |
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| 192 | }else if(idet->last_type == PROGRESSIVE){ |
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| 193 | idet->cur->interlaced_frame = 0; |
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| 194 | } |
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| 195 | |||
| 196 | for(i=0; i<3; i++) |
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| 197 | idet->repeats[i] = av_rescale(idet->repeats [i], idet->decay_coefficient, PRECISION); |
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| 198 | |||
| 199 | for(i=0; i<4; i++){ |
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| 200 | idet->prestat [i] = av_rescale(idet->prestat [i], idet->decay_coefficient, PRECISION); |
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| 201 | idet->poststat[i] = av_rescale(idet->poststat[i], idet->decay_coefficient, PRECISION); |
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| 202 | } |
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| 203 | |||
| 204 | idet->total_repeats [ repeat] ++; |
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| 205 | idet->repeats [ repeat] += PRECISION; |
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| 206 | |||
| 207 | idet->total_prestat [ type] ++; |
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| 208 | idet->prestat [ type] += PRECISION; |
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| 209 | |||
| 210 | idet->total_poststat[idet->last_type] ++; |
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| 211 | idet->poststat [idet->last_type] += PRECISION; |
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| 212 | |||
| 213 | av_log(ctx, AV_LOG_DEBUG, "Repeated Field:%12s, Single frame:%12s, Multi frame:%12s\n", |
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| 214 | rep2str(repeat), type2str(type), type2str(idet->last_type)); |
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| 215 | |||
| 216 | av_dict_set (metadata, "lavfi.idet.repeated.current_frame", rep2str(repeat), 0); |
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| 217 | av_dict_set_fxp(metadata, "lavfi.idet.repeated.neither", idet->repeats[REPEAT_NONE], 2, 0); |
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| 218 | av_dict_set_fxp(metadata, "lavfi.idet.repeated.top", idet->repeats[REPEAT_TOP], 2, 0); |
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| 219 | av_dict_set_fxp(metadata, "lavfi.idet.repeated.bottom", idet->repeats[REPEAT_BOTTOM], 2, 0); |
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| 220 | |||
| 221 | av_dict_set (metadata, "lavfi.idet.single.current_frame", type2str(type), 0); |
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| 222 | av_dict_set_fxp(metadata, "lavfi.idet.single.tff", idet->prestat[TFF], 2 , 0); |
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| 223 | av_dict_set_fxp(metadata, "lavfi.idet.single.bff", idet->prestat[BFF], 2, 0); |
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| 224 | av_dict_set_fxp(metadata, "lavfi.idet.single.progressive", idet->prestat[PROGRESSIVE], 2, 0); |
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| 225 | av_dict_set_fxp(metadata, "lavfi.idet.single.undetermined", idet->prestat[UNDETERMINED], 2, 0); |
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| 226 | |||
| 227 | av_dict_set (metadata, "lavfi.idet.multiple.current_frame", type2str(idet->last_type), 0); |
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| 228 | av_dict_set_fxp(metadata, "lavfi.idet.multiple.tff", idet->poststat[TFF], 2, 0); |
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| 229 | av_dict_set_fxp(metadata, "lavfi.idet.multiple.bff", idet->poststat[BFF], 2, 0); |
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| 230 | av_dict_set_fxp(metadata, "lavfi.idet.multiple.progressive", idet->poststat[PROGRESSIVE], 2, 0); |
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| 231 | av_dict_set_fxp(metadata, "lavfi.idet.multiple.undetermined", idet->poststat[UNDETERMINED], 2, 0); |
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| 232 | } |
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| 233 | |||
| 234 | static int filter_frame(AVFilterLink *link, AVFrame *picref) |
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| 235 | { |
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| 236 | AVFilterContext *ctx = link->dst; |
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| 237 | IDETContext *idet = ctx->priv; |
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| 238 | |||
| 239 | // initial frame(s) and not interlaced, just pass through for |
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| 240 | // the analyze_interlaced_flag mode |
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| 241 | if (idet->analyze_interlaced_flag && |
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| 242 | !picref->interlaced_frame && |
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| 243 | !idet->next) { |
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| 244 | return ff_filter_frame(ctx->outputs[0], picref); |
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| 245 | } |
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| 246 | if (idet->analyze_interlaced_flag_done) { |
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| 247 | if (picref->interlaced_frame && idet->interlaced_flag_accuracy < 0) |
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| 248 | picref->interlaced_frame = 0; |
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| 249 | return ff_filter_frame(ctx->outputs[0], picref); |
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| 250 | } |
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| 251 | |||
| 252 | av_frame_free(&idet->prev); |
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| 253 | |||
| 254 | if( picref->width != link->w |
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| 255 | || picref->height != link->h |
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| 256 | || picref->format != link->format) { |
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| 257 | link->dst->inputs[0]->format = picref->format; |
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| 258 | link->dst->inputs[0]->w = picref->width; |
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| 259 | link->dst->inputs[0]->h = picref->height; |
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| 260 | |||
| 261 | av_frame_free(&idet->cur ); |
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| 262 | av_frame_free(&idet->next); |
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| 263 | } |
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| 264 | |||
| 265 | idet->prev = idet->cur; |
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| 266 | idet->cur = idet->next; |
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| 267 | idet->next = picref; |
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| 268 | |||
| 269 | if (!idet->cur && |
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| 270 | !(idet->cur = av_frame_clone(idet->next))) |
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| 271 | return AVERROR(ENOMEM); |
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| 272 | |||
| 273 | if (!idet->prev) |
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| 274 | return 0; |
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| 275 | |||
| 276 | if (!idet->csp) |
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| 277 | idet->csp = av_pix_fmt_desc_get(link->format); |
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| 278 | if (idet->csp->comp[0].depth_minus1 / 8 == 1){ |
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| 279 | idet->filter_line = (ff_idet_filter_func)ff_idet_filter_line_c_16bit; |
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| 280 | if (ARCH_X86) |
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| 281 | ff_idet_init_x86(idet, 1); |
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| 282 | } |
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| 283 | |||
| 284 | if (idet->analyze_interlaced_flag) { |
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| 285 | if (idet->cur->interlaced_frame) { |
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| 286 | idet->cur->interlaced_frame = 0; |
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| 287 | filter(ctx); |
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| 288 | if (idet->last_type == PROGRESSIVE) { |
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| 289 | idet->interlaced_flag_accuracy --; |
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| 290 | idet->analyze_interlaced_flag --; |
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| 291 | } else if (idet->last_type != UNDETERMINED) { |
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| 292 | idet->interlaced_flag_accuracy ++; |
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| 293 | idet->analyze_interlaced_flag --; |
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| 294 | } |
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| 295 | if (idet->analyze_interlaced_flag == 1) { |
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| 296 | ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->cur)); |
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| 297 | |||
| 298 | if (idet->next->interlaced_frame && idet->interlaced_flag_accuracy < 0) |
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| 299 | idet->next->interlaced_frame = 0; |
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| 300 | idet->analyze_interlaced_flag_done = 1; |
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| 301 | av_log(ctx, AV_LOG_INFO, "Final flag accuracy %d\n", idet->interlaced_flag_accuracy); |
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| 302 | return ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->next)); |
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| 303 | } |
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| 304 | } |
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| 305 | } else { |
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| 306 | filter(ctx); |
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| 307 | } |
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| 308 | |||
| 309 | return ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->cur)); |
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| 310 | } |
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| 311 | |||
| 312 | static int request_frame(AVFilterLink *link) |
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| 313 | { |
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| 314 | AVFilterContext *ctx = link->src; |
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| 315 | IDETContext *idet = ctx->priv; |
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| 316 | |||
| 317 | do { |
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| 318 | int ret; |
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| 319 | |||
| 320 | if (idet->eof) |
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| 321 | return AVERROR_EOF; |
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| 322 | |||
| 323 | ret = ff_request_frame(link->src->inputs[0]); |
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| 324 | |||
| 325 | if (ret == AVERROR_EOF && idet->cur && !idet->analyze_interlaced_flag_done) { |
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| 326 | AVFrame *next = av_frame_clone(idet->next); |
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| 327 | |||
| 328 | if (!next) |
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| 329 | return AVERROR(ENOMEM); |
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| 330 | |||
| 331 | filter_frame(link->src->inputs[0], next); |
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| 332 | idet->eof = 1; |
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| 333 | } else if (ret < 0) { |
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| 334 | return ret; |
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| 335 | } |
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| 336 | } while (link->frame_requested); |
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| 337 | |||
| 338 | return 0; |
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| 339 | } |
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| 340 | |||
| 341 | static av_cold void uninit(AVFilterContext *ctx) |
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| 342 | { |
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| 343 | IDETContext *idet = ctx->priv; |
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| 344 | int level = strncmp(ctx->name, "auto-inserted", 13) ? AV_LOG_INFO : AV_LOG_DEBUG; |
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| 345 | |||
| 346 | av_log(ctx, level, "Repeated Fields: Neither:%6"PRId64" Top:%6"PRId64" Bottom:%6"PRId64"\n", |
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| 347 | idet->total_repeats[REPEAT_NONE], |
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| 348 | idet->total_repeats[REPEAT_TOP], |
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| 349 | idet->total_repeats[REPEAT_BOTTOM] |
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| 350 | ); |
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| 351 | av_log(ctx, level, "Single frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n", |
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| 352 | idet->total_prestat[TFF], |
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| 353 | idet->total_prestat[BFF], |
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| 354 | idet->total_prestat[PROGRESSIVE], |
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| 355 | idet->total_prestat[UNDETERMINED] |
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| 356 | ); |
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| 357 | av_log(ctx, level, "Multi frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n", |
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| 358 | idet->total_poststat[TFF], |
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| 359 | idet->total_poststat[BFF], |
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| 360 | idet->total_poststat[PROGRESSIVE], |
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| 361 | idet->total_poststat[UNDETERMINED] |
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| 362 | ); |
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| 363 | |||
| 364 | av_frame_free(&idet->prev); |
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| 365 | av_frame_free(&idet->cur ); |
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| 366 | av_frame_free(&idet->next); |
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| 367 | } |
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| 368 | |||
| 369 | static int query_formats(AVFilterContext *ctx) |
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| 370 | { |
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| 371 | static const enum AVPixelFormat pix_fmts[] = { |
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| 372 | AV_PIX_FMT_YUV420P, |
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| 373 | AV_PIX_FMT_YUV422P, |
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| 374 | AV_PIX_FMT_YUV444P, |
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| 375 | AV_PIX_FMT_YUV410P, |
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| 376 | AV_PIX_FMT_YUV411P, |
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| 377 | AV_PIX_FMT_GRAY8, |
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| 378 | AV_PIX_FMT_YUVJ420P, |
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| 379 | AV_PIX_FMT_YUVJ422P, |
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| 380 | AV_PIX_FMT_YUVJ444P, |
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| 381 | AV_PIX_FMT_GRAY16, |
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| 382 | AV_PIX_FMT_YUV440P, |
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| 383 | AV_PIX_FMT_YUVJ440P, |
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| 384 | AV_PIX_FMT_YUV420P9, |
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| 385 | AV_PIX_FMT_YUV422P9, |
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| 386 | AV_PIX_FMT_YUV444P9, |
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| 387 | AV_PIX_FMT_YUV420P10, |
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| 388 | AV_PIX_FMT_YUV422P10, |
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| 389 | AV_PIX_FMT_YUV444P10, |
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| 390 | AV_PIX_FMT_YUV420P12, |
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| 391 | AV_PIX_FMT_YUV422P12, |
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| 392 | AV_PIX_FMT_YUV444P12, |
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| 393 | AV_PIX_FMT_YUV420P14, |
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| 394 | AV_PIX_FMT_YUV422P14, |
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| 395 | AV_PIX_FMT_YUV444P14, |
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| 396 | AV_PIX_FMT_YUV420P16, |
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| 397 | AV_PIX_FMT_YUV422P16, |
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| 398 | AV_PIX_FMT_YUV444P16, |
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| 399 | AV_PIX_FMT_YUVA420P, |
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| 400 | AV_PIX_FMT_NONE |
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| 401 | }; |
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| 402 | AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
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| 403 | if (!fmts_list) |
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| 404 | return AVERROR(ENOMEM); |
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| 405 | return ff_set_common_formats(ctx, fmts_list); |
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| 406 | } |
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| 407 | |||
| 408 | static int config_output(AVFilterLink *outlink) |
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| 409 | { |
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| 410 | outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP; |
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| 411 | return 0; |
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| 412 | } |
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| 413 | |||
| 414 | static av_cold int init(AVFilterContext *ctx) |
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| 415 | { |
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| 416 | IDETContext *idet = ctx->priv; |
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| 417 | |||
| 418 | idet->eof = 0; |
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| 419 | idet->last_type = UNDETERMINED; |
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| 420 | memset(idet->history, UNDETERMINED, HIST_SIZE); |
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| 421 | |||
| 422 | if( idet->half_life > 0 ) |
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| 423 | idet->decay_coefficient = (uint64_t) round( PRECISION * exp2(-1.0 / idet->half_life) ); |
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| 424 | else |
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| 425 | idet->decay_coefficient = PRECISION; |
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| 426 | |||
| 427 | idet->filter_line = ff_idet_filter_line_c; |
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| 428 | |||
| 429 | if (ARCH_X86) |
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| 430 | ff_idet_init_x86(idet, 0); |
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| 431 | |||
| 432 | return 0; |
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| 433 | } |
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| 434 | |||
| 435 | static const AVFilterPad idet_inputs[] = { |
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| 436 | { |
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| 437 | .name = "default", |
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| 438 | .type = AVMEDIA_TYPE_VIDEO, |
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| 439 | .filter_frame = filter_frame, |
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| 440 | }, |
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| 441 | { NULL } |
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| 442 | }; |
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| 443 | |||
| 444 | static const AVFilterPad idet_outputs[] = { |
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| 445 | { |
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| 446 | .name = "default", |
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| 447 | .type = AVMEDIA_TYPE_VIDEO, |
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| 448 | .config_props = config_output, |
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| 449 | .request_frame = request_frame |
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| 450 | }, |
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| 451 | { NULL } |
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| 452 | }; |
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| 453 | |||
| 454 | AVFilter ff_vf_idet = { |
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| 455 | .name = "idet", |
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| 456 | .description = NULL_IF_CONFIG_SMALL("Interlace detect Filter."), |
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| 457 | .priv_size = sizeof(IDETContext), |
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| 458 | .init = init, |
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| 459 | .uninit = uninit, |
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| 460 | .query_formats = query_formats, |
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| 461 | .inputs = idet_inputs, |
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| 462 | .outputs = idet_outputs, |
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| 463 | .priv_class = &idet_class, |
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| 464 | }; |