0,0 → 1,984 |
/* |
* Copyright (c) 2012 Fredrik Mellbin |
* Copyright (c) 2013 Clément Bœsch |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
|
/** |
* @file |
* Fieldmatching filter, ported from VFM filter (VapouSsynth) by Clément. |
* Fredrik Mellbin is the author of the VIVTC/VFM filter, which is itself a |
* light clone of the TIVTC/TFM (AviSynth) filter written by Kevin Stone |
* (tritical), the original author. |
* |
* @see http://bengal.missouri.edu/~kes25c/ |
* @see http://www.vapoursynth.com/about/ |
*/ |
|
#include <inttypes.h> |
|
#include "libavutil/avassert.h" |
#include "libavutil/imgutils.h" |
#include "libavutil/opt.h" |
#include "libavutil/timestamp.h" |
#include "avfilter.h" |
#include "internal.h" |
|
#define INPUT_MAIN 0 |
#define INPUT_CLEANSRC 1 |
|
enum fieldmatch_parity { |
FM_PARITY_AUTO = -1, |
FM_PARITY_BOTTOM = 0, |
FM_PARITY_TOP = 1, |
}; |
|
enum matching_mode { |
MODE_PC, |
MODE_PC_N, |
MODE_PC_U, |
MODE_PC_N_UB, |
MODE_PCN, |
MODE_PCN_UB, |
NB_MODE |
}; |
|
enum comb_matching_mode { |
COMBMATCH_NONE, |
COMBMATCH_SC, |
COMBMATCH_FULL, |
NB_COMBMATCH |
}; |
|
enum comb_dbg { |
COMBDBG_NONE, |
COMBDBG_PCN, |
COMBDBG_PCNUB, |
NB_COMBDBG |
}; |
|
typedef struct { |
const AVClass *class; |
|
AVFrame *prv, *src, *nxt; ///< main sliding window of 3 frames |
AVFrame *prv2, *src2, *nxt2; ///< sliding window of the optional second stream |
int got_frame[2]; ///< frame request flag for each input stream |
int hsub, vsub; ///< chroma subsampling values |
uint32_t eof; ///< bitmask for end of stream |
int64_t lastscdiff; |
int64_t lastn; |
|
/* options */ |
int order; |
int ppsrc; |
enum matching_mode mode; |
int field; |
int mchroma; |
int y0, y1; |
int64_t scthresh; |
double scthresh_flt; |
enum comb_matching_mode combmatch; |
int combdbg; |
int cthresh; |
int chroma; |
int blockx, blocky; |
int combpel; |
|
/* misc buffers */ |
uint8_t *map_data[4]; |
int map_linesize[4]; |
uint8_t *cmask_data[4]; |
int cmask_linesize[4]; |
int *c_array; |
int tpitchy, tpitchuv; |
uint8_t *tbuffer; |
} FieldMatchContext; |
|
#define OFFSET(x) offsetof(FieldMatchContext, x) |
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
|
static const AVOption fieldmatch_options[] = { |
{ "order", "specify the assumed field order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "order" }, |
{ "auto", "auto detect parity", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "order" }, |
{ "bff", "assume bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "order" }, |
{ "tff", "assume top field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "order" }, |
{ "mode", "set the matching mode or strategy to use", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_PC_N}, MODE_PC, NB_MODE-1, FLAGS, "mode" }, |
{ "pc", "2-way match (p/c)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
{ "pc_n", "2-way match + 3rd match on combed (p/c + u)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_N}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
{ "pc_u", "2-way match + 3rd match (same order) on combed (p/c + u)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_U}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
{ "pc_n_ub", "2-way match + 3rd match on combed + 4th/5th matches if still combed (p/c + u + u/b)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_N_UB}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
{ "pcn", "3-way match (p/c/n)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
{ "pcn_ub", "3-way match + 4th/5th matches on combed (p/c/n + u/b)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN_UB}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
{ "ppsrc", "mark main input as a pre-processed input and activate clean source input stream", OFFSET(ppsrc), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS }, |
{ "field", "set the field to match from", OFFSET(field), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "field" }, |
{ "auto", "automatic (same value as 'order')", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "field" }, |
{ "bottom", "bottom field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "field" }, |
{ "top", "top field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "field" }, |
{ "mchroma", "set whether or not chroma is included during the match comparisons", OFFSET(mchroma), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS }, |
{ "y0", "define an exclusion band which excludes the lines between y0 and y1 from the field matching decision", OFFSET(y0), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS }, |
{ "y1", "define an exclusion band which excludes the lines between y0 and y1 from the field matching decision", OFFSET(y1), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS }, |
{ "scthresh", "set scene change detection threshold", OFFSET(scthresh_flt), AV_OPT_TYPE_DOUBLE, {.dbl=12}, 0, 100, FLAGS }, |
{ "combmatch", "set combmatching mode", OFFSET(combmatch), AV_OPT_TYPE_INT, {.i64=COMBMATCH_SC}, COMBMATCH_NONE, NB_COMBMATCH-1, FLAGS, "combmatching" }, |
{ "none", "disable combmatching", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_NONE}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, |
{ "sc", "enable combmatching only on scene change", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_SC}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, |
{ "full", "enable combmatching all the time", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_FULL}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, |
{ "combdbg", "enable comb debug", OFFSET(combdbg), AV_OPT_TYPE_INT, {.i64=COMBDBG_NONE}, COMBDBG_NONE, NB_COMBDBG-1, FLAGS, "dbglvl" }, |
{ "none", "no forced calculation", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_NONE}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, |
{ "pcn", "calculate p/c/n", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCN}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, |
{ "pcnub", "calculate p/c/n/u/b", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCNUB}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, |
{ "cthresh", "set the area combing threshold used for combed frame detection", OFFSET(cthresh), AV_OPT_TYPE_INT, {.i64= 9}, -1, 0xff, FLAGS }, |
{ "chroma", "set whether or not chroma is considered in the combed frame decision", OFFSET(chroma), AV_OPT_TYPE_INT, {.i64= 0}, 0, 1, FLAGS }, |
{ "blockx", "set the x-axis size of the window used during combed frame detection", OFFSET(blockx), AV_OPT_TYPE_INT, {.i64=16}, 4, 1<<9, FLAGS }, |
{ "blocky", "set the y-axis size of the window used during combed frame detection", OFFSET(blocky), AV_OPT_TYPE_INT, {.i64=16}, 4, 1<<9, FLAGS }, |
{ "combpel", "set the number of combed pixels inside any of the blocky by blockx size blocks on the frame for the frame to be detected as combed", OFFSET(combpel), AV_OPT_TYPE_INT, {.i64=80}, 0, INT_MAX, FLAGS }, |
{ NULL } |
}; |
|
AVFILTER_DEFINE_CLASS(fieldmatch); |
|
static int get_width(const FieldMatchContext *fm, const AVFrame *f, int plane) |
{ |
return plane ? FF_CEIL_RSHIFT(f->width, fm->hsub) : f->width; |
} |
|
static int get_height(const FieldMatchContext *fm, const AVFrame *f, int plane) |
{ |
return plane ? FF_CEIL_RSHIFT(f->height, fm->vsub) : f->height; |
} |
|
static int64_t luma_abs_diff(const AVFrame *f1, const AVFrame *f2) |
{ |
int x, y; |
const uint8_t *srcp1 = f1->data[0]; |
const uint8_t *srcp2 = f2->data[0]; |
const int src1_linesize = f1->linesize[0]; |
const int src2_linesize = f2->linesize[0]; |
const int width = f1->width; |
const int height = f1->height; |
int64_t acc = 0; |
|
for (y = 0; y < height; y++) { |
for (x = 0; x < width; x++) |
acc += abs(srcp1[x] - srcp2[x]); |
srcp1 += src1_linesize; |
srcp2 += src2_linesize; |
} |
return acc; |
} |
|
static void fill_buf(uint8_t *data, int w, int h, int linesize, uint8_t v) |
{ |
int y; |
|
for (y = 0; y < h; y++) { |
memset(data, v, w); |
data += linesize; |
} |
} |
|
static int calc_combed_score(const FieldMatchContext *fm, const AVFrame *src) |
{ |
int x, y, plane, max_v = 0; |
const int cthresh = fm->cthresh; |
const int cthresh6 = cthresh * 6; |
|
for (plane = 0; plane < (fm->chroma ? 3 : 1); plane++) { |
const uint8_t *srcp = src->data[plane]; |
const int src_linesize = src->linesize[plane]; |
const int width = get_width (fm, src, plane); |
const int height = get_height(fm, src, plane); |
uint8_t *cmkp = fm->cmask_data[plane]; |
const int cmk_linesize = fm->cmask_linesize[plane]; |
|
if (cthresh < 0) { |
fill_buf(cmkp, width, height, cmk_linesize, 0xff); |
continue; |
} |
fill_buf(cmkp, width, height, cmk_linesize, 0); |
|
/* [1 -3 4 -3 1] vertical filter */ |
#define FILTER(xm2, xm1, xp1, xp2) \ |
abs( 4 * srcp[x] \ |
-3 * (srcp[x + (xm1)*src_linesize] + srcp[x + (xp1)*src_linesize]) \ |
+ (srcp[x + (xm2)*src_linesize] + srcp[x + (xp2)*src_linesize])) > cthresh6 |
|
/* first line */ |
for (x = 0; x < width; x++) { |
const int s1 = abs(srcp[x] - srcp[x + src_linesize]); |
if (s1 > cthresh && FILTER(2, 1, 1, 2)) |
cmkp[x] = 0xff; |
} |
srcp += src_linesize; |
cmkp += cmk_linesize; |
|
/* second line */ |
for (x = 0; x < width; x++) { |
const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
const int s2 = abs(srcp[x] - srcp[x + src_linesize]); |
if (s1 > cthresh && s2 > cthresh && FILTER(2, -1, 1, 2)) |
cmkp[x] = 0xff; |
} |
srcp += src_linesize; |
cmkp += cmk_linesize; |
|
/* all lines minus first two and last two */ |
for (y = 2; y < height-2; y++) { |
for (x = 0; x < width; x++) { |
const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
const int s2 = abs(srcp[x] - srcp[x + src_linesize]); |
if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, 2)) |
cmkp[x] = 0xff; |
} |
srcp += src_linesize; |
cmkp += cmk_linesize; |
} |
|
/* before-last line */ |
for (x = 0; x < width; x++) { |
const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
const int s2 = abs(srcp[x] - srcp[x + src_linesize]); |
if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, -2)) |
cmkp[x] = 0xff; |
} |
srcp += src_linesize; |
cmkp += cmk_linesize; |
|
/* last line */ |
for (x = 0; x < width; x++) { |
const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
if (s1 > cthresh && FILTER(-2, -1, -1, -2)) |
cmkp[x] = 0xff; |
} |
} |
|
if (fm->chroma) { |
uint8_t *cmkp = fm->cmask_data[0]; |
uint8_t *cmkpU = fm->cmask_data[1]; |
uint8_t *cmkpV = fm->cmask_data[2]; |
const int width = FF_CEIL_RSHIFT(src->width, fm->hsub); |
const int height = FF_CEIL_RSHIFT(src->height, fm->vsub); |
const int cmk_linesize = fm->cmask_linesize[0] << 1; |
const int cmk_linesizeUV = fm->cmask_linesize[2]; |
uint8_t *cmkpp = cmkp - (cmk_linesize>>1); |
uint8_t *cmkpn = cmkp + (cmk_linesize>>1); |
uint8_t *cmkpnn = cmkp + cmk_linesize; |
for (y = 1; y < height - 1; y++) { |
cmkpp += cmk_linesize; |
cmkp += cmk_linesize; |
cmkpn += cmk_linesize; |
cmkpnn += cmk_linesize; |
cmkpV += cmk_linesizeUV; |
cmkpU += cmk_linesizeUV; |
for (x = 1; x < width - 1; x++) { |
#define HAS_FF_AROUND(p, lz) (p[x-1 - lz] == 0xff || p[x - lz] == 0xff || p[x+1 - lz] == 0xff || \ |
p[x-1 ] == 0xff || p[x+1 ] == 0xff || \ |
p[x-1 + lz] == 0xff || p[x + lz] == 0xff || p[x+1 + lz] == 0xff) |
if ((cmkpV[x] == 0xff && HAS_FF_AROUND(cmkpV, cmk_linesizeUV)) || |
(cmkpU[x] == 0xff && HAS_FF_AROUND(cmkpU, cmk_linesizeUV))) { |
((uint16_t*)cmkp)[x] = 0xffff; |
((uint16_t*)cmkpn)[x] = 0xffff; |
if (y&1) ((uint16_t*)cmkpp)[x] = 0xffff; |
else ((uint16_t*)cmkpnn)[x] = 0xffff; |
} |
} |
} |
} |
|
{ |
const int blockx = fm->blockx; |
const int blocky = fm->blocky; |
const int xhalf = blockx/2; |
const int yhalf = blocky/2; |
const int cmk_linesize = fm->cmask_linesize[0]; |
const uint8_t *cmkp = fm->cmask_data[0] + cmk_linesize; |
const int width = src->width; |
const int height = src->height; |
const int xblocks = ((width+xhalf)/blockx) + 1; |
const int xblocks4 = xblocks<<2; |
const int yblocks = ((height+yhalf)/blocky) + 1; |
int *c_array = fm->c_array; |
const int arraysize = (xblocks*yblocks)<<2; |
int heighta = (height/(blocky/2))*(blocky/2); |
const int widtha = (width /(blockx/2))*(blockx/2); |
if (heighta == height) |
heighta = height - yhalf; |
memset(c_array, 0, arraysize * sizeof(*c_array)); |
|
#define C_ARRAY_ADD(v) do { \ |
const int box1 = (x / blockx) * 4; \ |
const int box2 = ((x + xhalf) / blockx) * 4; \ |
c_array[temp1 + box1 ] += v; \ |
c_array[temp1 + box2 + 1] += v; \ |
c_array[temp2 + box1 + 2] += v; \ |
c_array[temp2 + box2 + 3] += v; \ |
} while (0) |
|
#define VERTICAL_HALF(y_start, y_end) do { \ |
for (y = y_start; y < y_end; y++) { \ |
const int temp1 = (y / blocky) * xblocks4; \ |
const int temp2 = ((y + yhalf) / blocky) * xblocks4; \ |
for (x = 0; x < width; x++) \ |
if (cmkp[x - cmk_linesize] == 0xff && \ |
cmkp[x ] == 0xff && \ |
cmkp[x + cmk_linesize] == 0xff) \ |
C_ARRAY_ADD(1); \ |
cmkp += cmk_linesize; \ |
} \ |
} while (0) |
|
VERTICAL_HALF(1, yhalf); |
|
for (y = yhalf; y < heighta; y += yhalf) { |
const int temp1 = (y / blocky) * xblocks4; |
const int temp2 = ((y + yhalf) / blocky) * xblocks4; |
|
for (x = 0; x < widtha; x += xhalf) { |
const uint8_t *cmkp_tmp = cmkp + x; |
int u, v, sum = 0; |
for (u = 0; u < yhalf; u++) { |
for (v = 0; v < xhalf; v++) |
if (cmkp_tmp[v - cmk_linesize] == 0xff && |
cmkp_tmp[v ] == 0xff && |
cmkp_tmp[v + cmk_linesize] == 0xff) |
sum++; |
cmkp_tmp += cmk_linesize; |
} |
if (sum) |
C_ARRAY_ADD(sum); |
} |
|
for (x = widtha; x < width; x++) { |
const uint8_t *cmkp_tmp = cmkp + x; |
int u, sum = 0; |
for (u = 0; u < yhalf; u++) { |
if (cmkp_tmp[-cmk_linesize] == 0xff && |
cmkp_tmp[ 0] == 0xff && |
cmkp_tmp[ cmk_linesize] == 0xff) |
sum++; |
cmkp_tmp += cmk_linesize; |
} |
if (sum) |
C_ARRAY_ADD(sum); |
} |
|
cmkp += cmk_linesize * yhalf; |
} |
|
VERTICAL_HALF(heighta, height - 1); |
|
for (x = 0; x < arraysize; x++) |
if (c_array[x] > max_v) |
max_v = c_array[x]; |
} |
return max_v; |
} |
|
// the secret is that tbuffer is an interlaced, offset subset of all the lines |
static void build_abs_diff_mask(const uint8_t *prvp, int prv_linesize, |
const uint8_t *nxtp, int nxt_linesize, |
uint8_t *tbuffer, int tbuf_linesize, |
int width, int height) |
{ |
int y, x; |
|
prvp -= prv_linesize; |
nxtp -= nxt_linesize; |
for (y = 0; y < height; y++) { |
for (x = 0; x < width; x++) |
tbuffer[x] = FFABS(prvp[x] - nxtp[x]); |
prvp += prv_linesize; |
nxtp += nxt_linesize; |
tbuffer += tbuf_linesize; |
} |
} |
|
/** |
* Build a map over which pixels differ a lot/a little |
*/ |
static void build_diff_map(FieldMatchContext *fm, |
const uint8_t *prvp, int prv_linesize, |
const uint8_t *nxtp, int nxt_linesize, |
uint8_t *dstp, int dst_linesize, int height, |
int width, int plane) |
{ |
int x, y, u, diff, count; |
int tpitch = plane ? fm->tpitchuv : fm->tpitchy; |
const uint8_t *dp = fm->tbuffer + tpitch; |
|
build_abs_diff_mask(prvp, prv_linesize, nxtp, nxt_linesize, |
fm->tbuffer, tpitch, width, height>>1); |
|
for (y = 2; y < height - 2; y += 2) { |
for (x = 1; x < width - 1; x++) { |
diff = dp[x]; |
if (diff > 3) { |
for (count = 0, u = x-1; u < x+2 && count < 2; u++) { |
count += dp[u-tpitch] > 3; |
count += dp[u ] > 3; |
count += dp[u+tpitch] > 3; |
} |
if (count > 1) { |
dstp[x] = 1; |
if (diff > 19) { |
int upper = 0, lower = 0; |
for (count = 0, u = x-1; u < x+2 && count < 6; u++) { |
if (dp[u-tpitch] > 19) { count++; upper = 1; } |
if (dp[u ] > 19) count++; |
if (dp[u+tpitch] > 19) { count++; lower = 1; } |
} |
if (count > 3) { |
if (upper && lower) { |
dstp[x] |= 1<<1; |
} else { |
int upper2 = 0, lower2 = 0; |
for (u = FFMAX(x-4,0); u < FFMIN(x+5,width); u++) { |
if (y != 2 && dp[u-2*tpitch] > 19) upper2 = 1; |
if ( dp[u- tpitch] > 19) upper = 1; |
if ( dp[u+ tpitch] > 19) lower = 1; |
if (y != height-4 && dp[u+2*tpitch] > 19) lower2 = 1; |
} |
if ((upper && (lower || upper2)) || |
(lower && (upper || lower2))) |
dstp[x] |= 1<<1; |
else if (count > 5) |
dstp[x] |= 1<<2; |
} |
} |
} |
} |
} |
} |
dp += tpitch; |
dstp += dst_linesize; |
} |
} |
|
enum { mP, mC, mN, mB, mU }; |
|
static int get_field_base(int match, int field) |
{ |
return match < 3 ? 2 - field : 1 + field; |
} |
|
static AVFrame *select_frame(FieldMatchContext *fm, int match) |
{ |
if (match == mP || match == mB) return fm->prv; |
else if (match == mN || match == mU) return fm->nxt; |
else /* match == mC */ return fm->src; |
} |
|
static int compare_fields(FieldMatchContext *fm, int match1, int match2, int field) |
{ |
int plane, ret; |
uint64_t accumPc = 0, accumPm = 0, accumPml = 0; |
uint64_t accumNc = 0, accumNm = 0, accumNml = 0; |
int norm1, norm2, mtn1, mtn2; |
float c1, c2, mr; |
const AVFrame *src = fm->src; |
|
for (plane = 0; plane < (fm->mchroma ? 3 : 1); plane++) { |
int x, y, temp1, temp2, fbase; |
const AVFrame *prev, *next; |
uint8_t *mapp = fm->map_data[plane]; |
int map_linesize = fm->map_linesize[plane]; |
const uint8_t *srcp = src->data[plane]; |
const int src_linesize = src->linesize[plane]; |
const int srcf_linesize = src_linesize << 1; |
int prv_linesize, nxt_linesize; |
int prvf_linesize, nxtf_linesize; |
const int width = get_width (fm, src, plane); |
const int height = get_height(fm, src, plane); |
const int y0a = fm->y0 >> (plane != 0); |
const int y1a = fm->y1 >> (plane != 0); |
const int startx = (plane == 0 ? 8 : 4); |
const int stopx = width - startx; |
const uint8_t *srcpf, *srcf, *srcnf; |
const uint8_t *prvpf, *prvnf, *nxtpf, *nxtnf; |
|
fill_buf(mapp, width, height, map_linesize, 0); |
|
/* match1 */ |
fbase = get_field_base(match1, field); |
srcf = srcp + (fbase + 1) * src_linesize; |
srcpf = srcf - srcf_linesize; |
srcnf = srcf + srcf_linesize; |
mapp = mapp + fbase * map_linesize; |
prev = select_frame(fm, match1); |
prv_linesize = prev->linesize[plane]; |
prvf_linesize = prv_linesize << 1; |
prvpf = prev->data[plane] + fbase * prv_linesize; // previous frame, previous field |
prvnf = prvpf + prvf_linesize; // previous frame, next field |
|
/* match2 */ |
fbase = get_field_base(match2, field); |
next = select_frame(fm, match2); |
nxt_linesize = next->linesize[plane]; |
nxtf_linesize = nxt_linesize << 1; |
nxtpf = next->data[plane] + fbase * nxt_linesize; // next frame, previous field |
nxtnf = nxtpf + nxtf_linesize; // next frame, next field |
|
map_linesize <<= 1; |
if ((match1 >= 3 && field == 1) || (match1 < 3 && field != 1)) |
build_diff_map(fm, prvpf, prvf_linesize, nxtpf, nxtf_linesize, |
mapp, map_linesize, height, width, plane); |
else |
build_diff_map(fm, prvnf, prvf_linesize, nxtnf, nxtf_linesize, |
mapp + map_linesize, map_linesize, height, width, plane); |
|
for (y = 2; y < height - 2; y += 2) { |
if (y0a == y1a || y < y0a || y > y1a) { |
for (x = startx; x < stopx; x++) { |
if (mapp[x] > 0 || mapp[x + map_linesize] > 0) { |
temp1 = srcpf[x] + (srcf[x] << 2) + srcnf[x]; // [1 4 1] |
|
temp2 = abs(3 * (prvpf[x] + prvnf[x]) - temp1); |
if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1))) |
accumPc += temp2; |
if (temp2 > 42) { |
if ((mapp[x]&2) || (mapp[x + map_linesize]&2)) |
accumPm += temp2; |
if ((mapp[x]&4) || (mapp[x + map_linesize]&4)) |
accumPml += temp2; |
} |
|
temp2 = abs(3 * (nxtpf[x] + nxtnf[x]) - temp1); |
if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1))) |
accumNc += temp2; |
if (temp2 > 42) { |
if ((mapp[x]&2) || (mapp[x + map_linesize]&2)) |
accumNm += temp2; |
if ((mapp[x]&4) || (mapp[x + map_linesize]&4)) |
accumNml += temp2; |
} |
} |
} |
} |
prvpf += prvf_linesize; |
prvnf += prvf_linesize; |
srcpf += srcf_linesize; |
srcf += srcf_linesize; |
srcnf += srcf_linesize; |
nxtpf += nxtf_linesize; |
nxtnf += nxtf_linesize; |
mapp += map_linesize; |
} |
} |
|
if (accumPm < 500 && accumNm < 500 && (accumPml >= 500 || accumNml >= 500) && |
FFMAX(accumPml,accumNml) > 3*FFMIN(accumPml,accumNml)) { |
accumPm = accumPml; |
accumNm = accumNml; |
} |
|
norm1 = (int)((accumPc / 6.0f) + 0.5f); |
norm2 = (int)((accumNc / 6.0f) + 0.5f); |
mtn1 = (int)((accumPm / 6.0f) + 0.5f); |
mtn2 = (int)((accumNm / 6.0f) + 0.5f); |
c1 = ((float)FFMAX(norm1,norm2)) / ((float)FFMAX(FFMIN(norm1,norm2),1)); |
c2 = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMIN(mtn1, mtn2), 1)); |
mr = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMAX(norm1,norm2),1)); |
if (((mtn1 >= 500 || mtn2 >= 500) && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1)) || |
((mtn1 >= 1000 || mtn2 >= 1000) && (mtn1*3 < mtn2*2 || mtn2*3 < mtn1*2)) || |
((mtn1 >= 2000 || mtn2 >= 2000) && (mtn1*5 < mtn2*4 || mtn2*5 < mtn1*4)) || |
((mtn1 >= 4000 || mtn2 >= 4000) && c2 > c1)) |
ret = mtn1 > mtn2 ? match2 : match1; |
else if (mr > 0.005 && FFMAX(mtn1, mtn2) > 150 && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1)) |
ret = mtn1 > mtn2 ? match2 : match1; |
else |
ret = norm1 > norm2 ? match2 : match1; |
return ret; |
} |
|
static void copy_fields(const FieldMatchContext *fm, AVFrame *dst, |
const AVFrame *src, int field) |
{ |
int plane; |
for (plane = 0; plane < 4 && src->data[plane] && src->linesize[plane]; plane++) |
av_image_copy_plane(dst->data[plane] + field*dst->linesize[plane], dst->linesize[plane] << 1, |
src->data[plane] + field*src->linesize[plane], src->linesize[plane] << 1, |
get_width(fm, src, plane), get_height(fm, src, plane) / 2); |
} |
|
static AVFrame *create_weave_frame(AVFilterContext *ctx, int match, int field, |
const AVFrame *prv, AVFrame *src, const AVFrame *nxt) |
{ |
AVFrame *dst; |
FieldMatchContext *fm = ctx->priv; |
|
if (match == mC) { |
dst = av_frame_clone(src); |
} else { |
AVFilterLink *outlink = ctx->outputs[0]; |
|
dst = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
if (!dst) |
return NULL; |
av_frame_copy_props(dst, src); |
|
switch (match) { |
case mP: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, prv, field); break; |
case mN: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, nxt, field); break; |
case mB: copy_fields(fm, dst, src, field); copy_fields(fm, dst, prv, 1-field); break; |
case mU: copy_fields(fm, dst, src, field); copy_fields(fm, dst, nxt, 1-field); break; |
default: av_assert0(0); |
} |
} |
return dst; |
} |
|
static int checkmm(AVFilterContext *ctx, int *combs, int m1, int m2, |
AVFrame **gen_frames, int field) |
{ |
const FieldMatchContext *fm = ctx->priv; |
|
#define LOAD_COMB(mid) do { \ |
if (combs[mid] < 0) { \ |
if (!gen_frames[mid]) \ |
gen_frames[mid] = create_weave_frame(ctx, mid, field, \ |
fm->prv, fm->src, fm->nxt); \ |
combs[mid] = calc_combed_score(fm, gen_frames[mid]); \ |
} \ |
} while (0) |
|
LOAD_COMB(m1); |
LOAD_COMB(m2); |
|
if ((combs[m2] * 3 < combs[m1] || (combs[m2] * 2 < combs[m1] && combs[m1] > fm->combpel)) && |
abs(combs[m2] - combs[m1]) >= 30 && combs[m2] < fm->combpel) |
return m2; |
else |
return m1; |
} |
|
static const int fxo0m[] = { mP, mC, mN, mB, mU }; |
static const int fxo1m[] = { mN, mC, mP, mU, mB }; |
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
{ |
AVFilterContext *ctx = inlink->dst; |
AVFilterLink *outlink = ctx->outputs[0]; |
FieldMatchContext *fm = ctx->priv; |
int combs[] = { -1, -1, -1, -1, -1 }; |
int order, field, i, match, sc = 0; |
const int *fxo; |
AVFrame *gen_frames[] = { NULL, NULL, NULL, NULL, NULL }; |
AVFrame *dst; |
|
/* update frames queue(s) */ |
#define SLIDING_FRAME_WINDOW(prv, src, nxt) do { \ |
if (prv != src) /* 2nd loop exception (1st has prv==src and we don't want to loose src) */ \ |
av_frame_free(&prv); \ |
prv = src; \ |
src = nxt; \ |
if (in) \ |
nxt = in; \ |
if (!prv) \ |
prv = src; \ |
if (!prv) /* received only one frame at that point */ \ |
return 0; \ |
av_assert0(prv && src && nxt); \ |
} while (0) |
if (FF_INLINK_IDX(inlink) == INPUT_MAIN) { |
SLIDING_FRAME_WINDOW(fm->prv, fm->src, fm->nxt); |
fm->got_frame[INPUT_MAIN] = 1; |
} else { |
SLIDING_FRAME_WINDOW(fm->prv2, fm->src2, fm->nxt2); |
fm->got_frame[INPUT_CLEANSRC] = 1; |
} |
if (!fm->got_frame[INPUT_MAIN] || (fm->ppsrc && !fm->got_frame[INPUT_CLEANSRC])) |
return 0; |
fm->got_frame[INPUT_MAIN] = fm->got_frame[INPUT_CLEANSRC] = 0; |
in = fm->src; |
|
/* parity */ |
order = fm->order != FM_PARITY_AUTO ? fm->order : (in->interlaced_frame ? in->top_field_first : 1); |
field = fm->field != FM_PARITY_AUTO ? fm->field : order; |
av_assert0(order == 0 || order == 1 || field == 0 || field == 1); |
fxo = field ^ order ? fxo1m : fxo0m; |
|
/* debug mode: we generate all the fields combinations and their associated |
* combed score. XXX: inject as frame metadata? */ |
if (fm->combdbg) { |
for (i = 0; i < FF_ARRAY_ELEMS(combs); i++) { |
if (i > mN && fm->combdbg == COMBDBG_PCN) |
break; |
gen_frames[i] = create_weave_frame(ctx, i, field, fm->prv, fm->src, fm->nxt); |
if (!gen_frames[i]) |
return AVERROR(ENOMEM); |
combs[i] = calc_combed_score(fm, gen_frames[i]); |
} |
av_log(ctx, AV_LOG_INFO, "COMBS: %3d %3d %3d %3d %3d\n", |
combs[0], combs[1], combs[2], combs[3], combs[4]); |
} else { |
gen_frames[mC] = av_frame_clone(fm->src); |
if (!gen_frames[mC]) |
return AVERROR(ENOMEM); |
} |
|
/* p/c selection and optional 3-way p/c/n matches */ |
match = compare_fields(fm, fxo[mC], fxo[mP], field); |
if (fm->mode == MODE_PCN || fm->mode == MODE_PCN_UB) |
match = compare_fields(fm, match, fxo[mN], field); |
|
/* scene change check */ |
if (fm->combmatch == COMBMATCH_SC) { |
if (fm->lastn == outlink->frame_count - 1) { |
if (fm->lastscdiff > fm->scthresh) |
sc = 1; |
} else if (luma_abs_diff(fm->prv, fm->src) > fm->scthresh) { |
sc = 1; |
} |
|
if (!sc) { |
fm->lastn = outlink->frame_count; |
fm->lastscdiff = luma_abs_diff(fm->src, fm->nxt); |
sc = fm->lastscdiff > fm->scthresh; |
} |
} |
|
if (fm->combmatch == COMBMATCH_FULL || (fm->combmatch == COMBMATCH_SC && sc)) { |
switch (fm->mode) { |
/* 2-way p/c matches */ |
case MODE_PC: |
match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field); |
break; |
case MODE_PC_N: |
match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field); |
break; |
case MODE_PC_U: |
match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field); |
break; |
case MODE_PC_N_UB: |
match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field); |
match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field); |
match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field); |
break; |
/* 3-way p/c/n matches */ |
case MODE_PCN: |
match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field); |
break; |
case MODE_PCN_UB: |
match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field); |
match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field); |
break; |
default: |
av_assert0(0); |
} |
} |
|
/* get output frame and drop the others */ |
if (fm->ppsrc) { |
/* field matching was based on a filtered/post-processed input, we now |
* pick the untouched fields from the clean source */ |
dst = create_weave_frame(ctx, match, field, fm->prv2, fm->src2, fm->nxt2); |
} else { |
if (!gen_frames[match]) { // XXX: is that possible? |
dst = create_weave_frame(ctx, match, field, fm->prv, fm->src, fm->nxt); |
} else { |
dst = gen_frames[match]; |
gen_frames[match] = NULL; |
} |
} |
if (!dst) |
return AVERROR(ENOMEM); |
for (i = 0; i < FF_ARRAY_ELEMS(gen_frames); i++) |
av_frame_free(&gen_frames[i]); |
|
/* mark the frame we are unable to match properly as interlaced so a proper |
* de-interlacer can take the relay */ |
dst->interlaced_frame = combs[match] >= fm->combpel; |
if (dst->interlaced_frame) { |
av_log(ctx, AV_LOG_WARNING, "Frame #%"PRId64" at %s is still interlaced\n", |
outlink->frame_count, av_ts2timestr(in->pts, &inlink->time_base)); |
dst->top_field_first = field; |
} |
|
av_log(ctx, AV_LOG_DEBUG, "SC:%d | COMBS: %3d %3d %3d %3d %3d (combpel=%d)" |
" match=%d combed=%s\n", sc, combs[0], combs[1], combs[2], combs[3], combs[4], |
fm->combpel, match, dst->interlaced_frame ? "YES" : "NO"); |
|
return ff_filter_frame(outlink, dst); |
} |
|
static int request_inlink(AVFilterContext *ctx, int lid) |
{ |
int ret = 0; |
FieldMatchContext *fm = ctx->priv; |
|
if (!fm->got_frame[lid]) { |
AVFilterLink *inlink = ctx->inputs[lid]; |
ret = ff_request_frame(inlink); |
if (ret == AVERROR_EOF) { // flushing |
fm->eof |= 1 << lid; |
ret = filter_frame(inlink, NULL); |
} |
} |
return ret; |
} |
|
static int request_frame(AVFilterLink *outlink) |
{ |
int ret; |
AVFilterContext *ctx = outlink->src; |
FieldMatchContext *fm = ctx->priv; |
const uint32_t eof_mask = 1<<INPUT_MAIN | fm->ppsrc<<INPUT_CLEANSRC; |
|
if ((fm->eof & eof_mask) == eof_mask) // flush done? |
return AVERROR_EOF; |
if ((ret = request_inlink(ctx, INPUT_MAIN)) < 0) |
return ret; |
if (fm->ppsrc && (ret = request_inlink(ctx, INPUT_CLEANSRC)) < 0) |
return ret; |
return 0; |
} |
|
static int query_formats(AVFilterContext *ctx) |
{ |
// TODO: second input source can support >8bit depth |
static const enum AVPixelFormat pix_fmts[] = { |
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, |
AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, |
AV_PIX_FMT_NONE |
}; |
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
return 0; |
} |
|
static int config_input(AVFilterLink *inlink) |
{ |
int ret; |
AVFilterContext *ctx = inlink->dst; |
FieldMatchContext *fm = ctx->priv; |
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format); |
const int w = inlink->w; |
const int h = inlink->h; |
|
fm->scthresh = (int64_t)((w * h * 255.0 * fm->scthresh_flt) / 100.0); |
|
if ((ret = av_image_alloc(fm->map_data, fm->map_linesize, w, h, inlink->format, 32)) < 0 || |
(ret = av_image_alloc(fm->cmask_data, fm->cmask_linesize, w, h, inlink->format, 32)) < 0) |
return ret; |
|
fm->hsub = pix_desc->log2_chroma_w; |
fm->vsub = pix_desc->log2_chroma_h; |
|
fm->tpitchy = FFALIGN(w, 16); |
fm->tpitchuv = FFALIGN(w >> 1, 16); |
|
fm->tbuffer = av_malloc(h/2 * fm->tpitchy); |
fm->c_array = av_malloc((((w + fm->blockx/2)/fm->blockx)+1) * |
(((h + fm->blocky/2)/fm->blocky)+1) * |
4 * sizeof(*fm->c_array)); |
if (!fm->tbuffer || !fm->c_array) |
return AVERROR(ENOMEM); |
|
return 0; |
} |
|
static av_cold int fieldmatch_init(AVFilterContext *ctx) |
{ |
const FieldMatchContext *fm = ctx->priv; |
AVFilterPad pad = { |
.name = av_strdup("main"), |
.type = AVMEDIA_TYPE_VIDEO, |
.filter_frame = filter_frame, |
.config_props = config_input, |
}; |
|
if (!pad.name) |
return AVERROR(ENOMEM); |
ff_insert_inpad(ctx, INPUT_MAIN, &pad); |
|
if (fm->ppsrc) { |
pad.name = av_strdup("clean_src"); |
pad.config_props = NULL; |
if (!pad.name) |
return AVERROR(ENOMEM); |
ff_insert_inpad(ctx, INPUT_CLEANSRC, &pad); |
} |
|
if ((fm->blockx & (fm->blockx - 1)) || |
(fm->blocky & (fm->blocky - 1))) { |
av_log(ctx, AV_LOG_ERROR, "blockx and blocky settings must be power of two\n"); |
return AVERROR(EINVAL); |
} |
|
if (fm->combpel > fm->blockx * fm->blocky) { |
av_log(ctx, AV_LOG_ERROR, "Combed pixel should not be larger than blockx x blocky\n"); |
return AVERROR(EINVAL); |
} |
|
return 0; |
} |
|
static av_cold void fieldmatch_uninit(AVFilterContext *ctx) |
{ |
int i; |
FieldMatchContext *fm = ctx->priv; |
|
if (fm->prv != fm->src) |
av_frame_free(&fm->prv); |
if (fm->nxt != fm->src) |
av_frame_free(&fm->nxt); |
av_frame_free(&fm->src); |
av_freep(&fm->map_data[0]); |
av_freep(&fm->cmask_data[0]); |
av_freep(&fm->tbuffer); |
av_freep(&fm->c_array); |
for (i = 0; i < ctx->nb_inputs; i++) |
av_freep(&ctx->input_pads[i].name); |
} |
|
static int config_output(AVFilterLink *outlink) |
{ |
AVFilterContext *ctx = outlink->src; |
const FieldMatchContext *fm = ctx->priv; |
const AVFilterLink *inlink = |
ctx->inputs[fm->ppsrc ? INPUT_CLEANSRC : INPUT_MAIN]; |
|
outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP; |
outlink->time_base = inlink->time_base; |
outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; |
outlink->frame_rate = inlink->frame_rate; |
outlink->w = inlink->w; |
outlink->h = inlink->h; |
return 0; |
} |
|
static const AVFilterPad fieldmatch_outputs[] = { |
{ |
.name = "default", |
.type = AVMEDIA_TYPE_VIDEO, |
.request_frame = request_frame, |
.config_props = config_output, |
}, |
{ NULL } |
}; |
|
AVFilter avfilter_vf_fieldmatch = { |
.name = "fieldmatch", |
.description = NULL_IF_CONFIG_SMALL("Field matching for inverse telecine."), |
.query_formats = query_formats, |
.priv_size = sizeof(FieldMatchContext), |
.init = fieldmatch_init, |
.uninit = fieldmatch_uninit, |
.inputs = NULL, |
.outputs = fieldmatch_outputs, |
.priv_class = &fieldmatch_class, |
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS, |
}; |