0,0 → 1,783 |
/* |
* Copyright (c) 2003 Rich Felker |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU General Public |
* License as published by the Free Software Foundation; either |
* version 2 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 General Public License for more details. |
* |
* You should have received a copy of the GNU 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 |
*/ |
|
#include "libavutil/avassert.h" |
#include "libavutil/imgutils.h" |
#include "libavutil/opt.h" |
#include "libavutil/pixdesc.h" |
#include "avfilter.h" |
#include "formats.h" |
#include "internal.h" |
#include "video.h" |
#include "vf_pullup.h" |
|
#define F_HAVE_BREAKS 1 |
#define F_HAVE_AFFINITY 2 |
|
#define BREAK_LEFT 1 |
#define BREAK_RIGHT 2 |
|
#define OFFSET(x) offsetof(PullupContext, x) |
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
|
static const AVOption pullup_options[] = { |
{ "jl", "set left junk size", OFFSET(junk_left), AV_OPT_TYPE_INT, {.i64=1}, 0, INT_MAX, FLAGS }, |
{ "jr", "set right junk size", OFFSET(junk_right), AV_OPT_TYPE_INT, {.i64=1}, 0, INT_MAX, FLAGS }, |
{ "jt", "set top junk size", OFFSET(junk_top), AV_OPT_TYPE_INT, {.i64=4}, 1, INT_MAX, FLAGS }, |
{ "jb", "set bottom junk size", OFFSET(junk_bottom), AV_OPT_TYPE_INT, {.i64=4}, 1, INT_MAX, FLAGS }, |
{ "sb", "set strict breaks", OFFSET(strict_breaks), AV_OPT_TYPE_INT, {.i64=0},-1, 1, FLAGS }, |
{ "mp", "set metric plane", OFFSET(metric_plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "mp" }, |
{ "y", "luma", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mp" }, |
{ "u", "chroma blue", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mp" }, |
{ "v", "chroma red", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "mp" }, |
{ NULL } |
}; |
|
AVFILTER_DEFINE_CLASS(pullup); |
|
static int query_formats(AVFilterContext *ctx) |
{ |
static const enum AVPixelFormat pix_fmts[] = { |
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, |
AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, |
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, |
AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, |
AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, |
AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_GRAY8, |
AV_PIX_FMT_NONE |
}; |
|
AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
if (!fmts_list) |
return AVERROR(ENOMEM); |
return ff_set_common_formats(ctx, fmts_list); |
} |
|
#define ABS(a) (((a) ^ ((a) >> 31)) - ((a) >> 31)) |
|
static int diff_c(const uint8_t *a, const uint8_t *b, ptrdiff_t s) |
{ |
int i, j, diff = 0; |
|
for (i = 0; i < 4; i++) { |
for (j = 0; j < 8; j++) |
diff += ABS(a[j] - b[j]); |
a += s; |
b += s; |
} |
|
return diff; |
} |
|
static int comb_c(const uint8_t *a, const uint8_t *b, ptrdiff_t s) |
{ |
int i, j, comb = 0; |
|
for (i = 0; i < 4; i++) { |
for (j = 0; j < 8; j++) |
comb += ABS((a[j] << 1) - b[j - s] - b[j ]) + |
ABS((b[j] << 1) - a[j ] - a[j + s]); |
a += s; |
b += s; |
} |
|
return comb; |
} |
|
static int var_c(const uint8_t *a, const uint8_t *b, ptrdiff_t s) |
{ |
int i, j, var = 0; |
|
for (i = 0; i < 3; i++) { |
for (j = 0; j < 8; j++) |
var += ABS(a[j] - a[j + s]); |
a += s; |
} |
|
return 4 * var; /* match comb scaling */ |
} |
|
static int alloc_metrics(PullupContext *s, PullupField *f) |
{ |
f->diffs = av_calloc(FFALIGN(s->metric_length, 16), sizeof(*f->diffs)); |
f->combs = av_calloc(FFALIGN(s->metric_length, 16), sizeof(*f->combs)); |
f->vars = av_calloc(FFALIGN(s->metric_length, 16), sizeof(*f->vars)); |
|
if (!f->diffs || !f->combs || !f->vars) { |
av_freep(&f->diffs); |
av_freep(&f->combs); |
av_freep(&f->vars); |
return AVERROR(ENOMEM); |
} |
return 0; |
} |
|
static void free_field_queue(PullupField *head) |
{ |
PullupField *f = head; |
do { |
PullupField *next; |
if (!f) |
break; |
av_free(f->diffs); |
av_free(f->combs); |
av_free(f->vars); |
next = f->next; |
memset(f, 0, sizeof(*f)); // clear all pointers to avoid stale ones |
av_free(f); |
f = next; |
} while (f != head); |
} |
|
static PullupField *make_field_queue(PullupContext *s, int len) |
{ |
PullupField *head, *f; |
|
f = head = av_mallocz(sizeof(*head)); |
if (!f) |
return NULL; |
|
if (alloc_metrics(s, f) < 0) { |
av_free(f); |
return NULL; |
} |
|
for (; len > 0; len--) { |
f->next = av_mallocz(sizeof(*f->next)); |
if (!f->next) { |
free_field_queue(head); |
return NULL; |
} |
|
f->next->prev = f; |
f = f->next; |
if (alloc_metrics(s, f) < 0) { |
free_field_queue(head); |
return NULL; |
} |
} |
|
f->next = head; |
head->prev = f; |
|
return head; |
} |
|
static int config_input(AVFilterLink *inlink) |
{ |
AVFilterContext *ctx = inlink->dst; |
PullupContext *s = ctx->priv; |
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
int mp = s->metric_plane; |
|
s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
|
if (mp + 1 > s->nb_planes) { |
av_log(ctx, AV_LOG_ERROR, "input format does not have such plane\n"); |
return AVERROR(EINVAL); |
} |
|
s->planeheight[1] = s->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
s->planeheight[0] = s->planeheight[3] = inlink->h; |
s->planewidth[1] = s->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); |
s->planewidth[0] = s->planewidth[3] = inlink->w; |
|
s->metric_w = (s->planewidth[mp] - ((s->junk_left + s->junk_right) << 3)) >> 3; |
s->metric_h = (s->planeheight[mp] - ((s->junk_top + s->junk_bottom) << 1)) >> 3; |
s->metric_offset = (s->junk_left << 3) + (s->junk_top << 1) * s->planewidth[mp]; |
s->metric_length = s->metric_w * s->metric_h; |
|
av_log(ctx, AV_LOG_DEBUG, "w: %d h: %d\n", s->metric_w, s->metric_h); |
av_log(ctx, AV_LOG_DEBUG, "offset: %d length: %d\n", s->metric_offset, s->metric_length); |
|
s->head = make_field_queue(s, 8); |
if (!s->head) |
return AVERROR(ENOMEM); |
|
s->diff = diff_c; |
s->comb = comb_c; |
s->var = var_c; |
|
if (ARCH_X86) |
ff_pullup_init_x86(s); |
return 0; |
} |
|
static int config_output(AVFilterLink *outlink) |
{ |
outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP; |
return 0; |
} |
|
static PullupBuffer *pullup_lock_buffer(PullupBuffer *b, int parity) |
{ |
if (!b) |
return NULL; |
|
if ((parity + 1) & 1) |
b->lock[0]++; |
if ((parity + 1) & 2) |
b->lock[1]++; |
|
return b; |
} |
|
static void pullup_release_buffer(PullupBuffer *b, int parity) |
{ |
if (!b) |
return; |
|
if ((parity + 1) & 1) |
b->lock[0]--; |
if ((parity + 1) & 2) |
b->lock[1]--; |
} |
|
static int alloc_buffer(PullupContext *s, PullupBuffer *b) |
{ |
int i; |
|
if (b->planes[0]) |
return 0; |
for (i = 0; i < s->nb_planes; i++) { |
b->planes[i] = av_malloc(s->planeheight[i] * s->planewidth[i]); |
} |
if (s->nb_planes == 1) |
b->planes[1] = av_malloc(4*256); |
|
return 0; |
} |
|
static PullupBuffer *pullup_get_buffer(PullupContext *s, int parity) |
{ |
int i; |
|
/* Try first to get the sister buffer for the previous field */ |
if (parity < 2 && s->last && parity != s->last->parity |
&& !s->last->buffer->lock[parity]) { |
alloc_buffer(s, s->last->buffer); |
return pullup_lock_buffer(s->last->buffer, parity); |
} |
|
/* Prefer a buffer with both fields open */ |
for (i = 0; i < FF_ARRAY_ELEMS(s->buffers); i++) { |
if (s->buffers[i].lock[0]) |
continue; |
if (s->buffers[i].lock[1]) |
continue; |
alloc_buffer(s, &s->buffers[i]); |
return pullup_lock_buffer(&s->buffers[i], parity); |
} |
|
if (parity == 2) |
return 0; |
|
/* Search for any half-free buffer */ |
for (i = 0; i < FF_ARRAY_ELEMS(s->buffers); i++) { |
if (((parity + 1) & 1) && s->buffers[i].lock[0]) |
continue; |
if (((parity + 1) & 2) && s->buffers[i].lock[1]) |
continue; |
alloc_buffer(s, &s->buffers[i]); |
return pullup_lock_buffer(&s->buffers[i], parity); |
} |
|
return NULL; |
} |
|
static int queue_length(PullupField *begin, PullupField *end) |
{ |
PullupField *f; |
int count = 1; |
|
if (!begin || !end) |
return 0; |
|
for (f = begin; f != end; f = f->next) |
count++; |
|
return count; |
} |
|
static int find_first_break(PullupField *f, int max) |
{ |
int i; |
|
for (i = 0; i < max; i++) { |
if (f->breaks & BREAK_RIGHT || f->next->breaks & BREAK_LEFT) |
return i + 1; |
f = f->next; |
} |
|
return 0; |
} |
|
static void compute_breaks(PullupContext *s, PullupField *f0) |
{ |
PullupField *f1 = f0->next; |
PullupField *f2 = f1->next; |
PullupField *f3 = f2->next; |
int i, l, max_l = 0, max_r = 0; |
|
if (f0->flags & F_HAVE_BREAKS) |
return; |
|
f0->flags |= F_HAVE_BREAKS; |
|
/* Special case when fields are 100% identical */ |
if (f0->buffer == f2->buffer && f1->buffer != f3->buffer) { |
f2->breaks |= BREAK_RIGHT; |
return; |
} |
|
if (f0->buffer != f2->buffer && f1->buffer == f3->buffer) { |
f1->breaks |= BREAK_LEFT; |
return; |
} |
|
for (i = 0; i < s->metric_length; i++) { |
l = f2->diffs[i] - f3->diffs[i]; |
|
if ( l > max_l) |
max_l = l; |
if (-l > max_r) |
max_r = -l; |
} |
|
/* Don't get tripped up when differences are mostly quant error */ |
if (max_l + max_r < 128) |
return; |
if (max_l > 4 * max_r) |
f1->breaks |= BREAK_LEFT; |
if (max_r > 4 * max_l) |
f2->breaks |= BREAK_RIGHT; |
} |
|
static void compute_affinity(PullupContext *s, PullupField *f) |
{ |
int i, max_l = 0, max_r = 0, l; |
|
if (f->flags & F_HAVE_AFFINITY) |
return; |
|
f->flags |= F_HAVE_AFFINITY; |
|
if (f->buffer == f->next->next->buffer) { |
f->affinity = 1; |
f->next->affinity = 0; |
f->next->next->affinity = -1; |
f->next->flags |= F_HAVE_AFFINITY; |
f->next->next->flags |= F_HAVE_AFFINITY; |
return; |
} |
|
for (i = 0; i < s->metric_length; i++) { |
int v = f->vars[i]; |
int lv = f->prev->vars[i]; |
int rv = f->next->vars[i]; |
int lc = f-> combs[i] - 2*(v < lv ? v : lv); |
int rc = f->next->combs[i] - 2*(v < rv ? v : rv); |
|
lc = FFMAX(lc, 0); |
rc = FFMAX(rc, 0); |
l = lc - rc; |
|
if ( l > max_l) |
max_l = l; |
if (-l > max_r) |
max_r = -l; |
} |
|
if (max_l + max_r < 64) |
return; |
|
if (max_r > 6 * max_l) |
f->affinity = -1; |
else if (max_l > 6 * max_r) |
f->affinity = 1; |
} |
|
static int decide_frame_length(PullupContext *s) |
{ |
PullupField *f0 = s->first; |
PullupField *f1 = f0->next; |
PullupField *f2 = f1->next; |
PullupField *f; |
int i, l, n; |
|
if (queue_length(s->first, s->last) < 4) |
return 0; |
|
f = s->first; |
n = queue_length(f, s->last); |
for (i = 0; i < n - 1; i++) { |
if (i < n - 3) |
compute_breaks(s, f); |
|
compute_affinity(s, f); |
|
f = f->next; |
} |
|
if (f0->affinity == -1) |
return 1; |
|
l = find_first_break(f0, 3); |
|
if (l == 1 && s->strict_breaks < 0) |
l = 0; |
|
switch (l) { |
case 1: |
return 1 + (s->strict_breaks < 1 && f0->affinity == 1 && f1->affinity == -1); |
case 2: |
/* FIXME: strictly speaking, f0->prev is no longer valid... :) */ |
if (s->strict_pairs |
&& (f0->prev->breaks & BREAK_RIGHT) && (f2->breaks & BREAK_LEFT) |
&& (f0->affinity != 1 || f1->affinity != -1) ) |
return 1; |
return 1 + (f1->affinity != 1); |
case 3: |
return 2 + (f2->affinity != 1); |
default: |
/* 9 possibilities covered before switch */ |
if (f1->affinity == 1) |
return 1; /* covers 6 */ |
else if (f1->affinity == -1) |
return 2; /* covers 6 */ |
else if (f2->affinity == -1) { /* covers 2 */ |
return (f0->affinity == 1) ? 3 : 1; |
} else { |
return 2; /* the remaining 6 */ |
} |
} |
} |
|
static PullupFrame *pullup_get_frame(PullupContext *s) |
{ |
PullupFrame *fr = &s->frame; |
int i, n = decide_frame_length(s); |
int aff = s->first->next->affinity; |
|
av_assert1(n < FF_ARRAY_ELEMS(fr->ifields)); |
if (!n || fr->lock) |
return NULL; |
|
fr->lock++; |
fr->length = n; |
fr->parity = s->first->parity; |
fr->buffer = 0; |
|
for (i = 0; i < n; i++) { |
/* We cheat and steal the buffer without release+relock */ |
fr->ifields[i] = s->first->buffer; |
s->first->buffer = 0; |
s->first = s->first->next; |
} |
|
if (n == 1) { |
fr->ofields[fr->parity ] = fr->ifields[0]; |
fr->ofields[fr->parity ^ 1] = 0; |
} else if (n == 2) { |
fr->ofields[fr->parity ] = fr->ifields[0]; |
fr->ofields[fr->parity ^ 1] = fr->ifields[1]; |
} else if (n == 3) { |
if (!aff) |
aff = (fr->ifields[0] == fr->ifields[1]) ? -1 : 1; |
fr->ofields[fr->parity ] = fr->ifields[1 + aff]; |
fr->ofields[fr->parity ^ 1] = fr->ifields[1 ]; |
} |
|
pullup_lock_buffer(fr->ofields[0], 0); |
pullup_lock_buffer(fr->ofields[1], 1); |
|
if (fr->ofields[0] == fr->ofields[1]) { |
fr->buffer = fr->ofields[0]; |
pullup_lock_buffer(fr->buffer, 2); |
return fr; |
} |
|
return fr; |
} |
|
static void pullup_release_frame(PullupFrame *f) |
{ |
int i; |
|
for (i = 0; i < f->length; i++) |
pullup_release_buffer(f->ifields[i], f->parity ^ (i & 1)); |
|
pullup_release_buffer(f->ofields[0], 0); |
pullup_release_buffer(f->ofields[1], 1); |
|
if (f->buffer) |
pullup_release_buffer(f->buffer, 2); |
f->lock--; |
} |
|
static void compute_metric(PullupContext *s, int *dest, |
PullupField *fa, int pa, PullupField *fb, int pb, |
int (*func)(const uint8_t *, const uint8_t *, ptrdiff_t)) |
{ |
int mp = s->metric_plane; |
int xstep = 8; |
int ystep = s->planewidth[mp] << 3; |
int stride = s->planewidth[mp] << 1; /* field stride */ |
int w = s->metric_w * xstep; |
uint8_t *a, *b; |
int x, y; |
|
if (!fa->buffer || !fb->buffer) |
return; |
|
/* Shortcut for duplicate fields (e.g. from RFF flag) */ |
if (fa->buffer == fb->buffer && pa == pb) { |
memset(dest, 0, s->metric_length * sizeof(*dest)); |
return; |
} |
|
a = fa->buffer->planes[mp] + pa * s->planewidth[mp] + s->metric_offset; |
b = fb->buffer->planes[mp] + pb * s->planewidth[mp] + s->metric_offset; |
|
for (y = 0; y < s->metric_h; y++) { |
for (x = 0; x < w; x += xstep) |
*dest++ = func(a + x, b + x, stride); |
a += ystep; b += ystep; |
} |
} |
|
static int check_field_queue(PullupContext *s) |
{ |
int ret; |
|
if (s->head->next == s->first) { |
PullupField *f = av_mallocz(sizeof(*f)); |
|
if (!f) |
return AVERROR(ENOMEM); |
|
if ((ret = alloc_metrics(s, f)) < 0) { |
av_free(f); |
return ret; |
} |
|
f->prev = s->head; |
f->next = s->first; |
s->head->next = f; |
s->first->prev = f; |
} |
|
return 0; |
} |
|
static void pullup_submit_field(PullupContext *s, PullupBuffer *b, int parity) |
{ |
PullupField *f; |
|
/* Grow the circular list if needed */ |
if (check_field_queue(s) < 0) |
return; |
|
/* Cannot have two fields of same parity in a row; drop the new one */ |
if (s->last && s->last->parity == parity) |
return; |
|
f = s->head; |
f->parity = parity; |
f->buffer = pullup_lock_buffer(b, parity); |
f->flags = 0; |
f->breaks = 0; |
f->affinity = 0; |
|
compute_metric(s, f->diffs, f, parity, f->prev->prev, parity, s->diff); |
compute_metric(s, f->combs, parity ? f->prev : f, 0, parity ? f : f->prev, 1, s->comb); |
compute_metric(s, f->vars, f, parity, f, -1, s->var); |
emms_c(); |
|
/* Advance the circular list */ |
if (!s->first) |
s->first = s->head; |
|
s->last = s->head; |
s->head = s->head->next; |
} |
|
static void copy_field(PullupContext *s, |
PullupBuffer *dst, PullupBuffer *src, int parity) |
{ |
uint8_t *dd, *ss; |
int i; |
|
for (i = 0; i < s->nb_planes; i++) { |
ss = src->planes[i] + parity * s->planewidth[i]; |
dd = dst->planes[i] + parity * s->planewidth[i]; |
|
av_image_copy_plane(dd, s->planewidth[i] << 1, |
ss, s->planewidth[i] << 1, |
s->planewidth[i], s->planeheight[i] >> 1); |
} |
} |
|
static void pullup_pack_frame(PullupContext *s, PullupFrame *fr) |
{ |
int i; |
|
if (fr->buffer) |
return; |
|
if (fr->length < 2) |
return; /* FIXME: deal with this */ |
|
for (i = 0; i < 2; i++) { |
if (fr->ofields[i]->lock[i^1]) |
continue; |
|
fr->buffer = fr->ofields[i]; |
pullup_lock_buffer(fr->buffer, 2); |
copy_field(s, fr->buffer, fr->ofields[i^1], i^1); |
return; |
} |
|
fr->buffer = pullup_get_buffer(s, 2); |
|
copy_field(s, fr->buffer, fr->ofields[0], 0); |
copy_field(s, fr->buffer, fr->ofields[1], 1); |
} |
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
{ |
AVFilterContext *ctx = inlink->dst; |
AVFilterLink *outlink = ctx->outputs[0]; |
PullupContext *s = ctx->priv; |
PullupBuffer *b; |
PullupFrame *f; |
AVFrame *out; |
int p, ret = 0; |
|
b = pullup_get_buffer(s, 2); |
if (!b) { |
av_log(ctx, AV_LOG_WARNING, "Could not get buffer!\n"); |
f = pullup_get_frame(s); |
pullup_release_frame(f); |
goto end; |
} |
|
av_image_copy(b->planes, s->planewidth, |
(const uint8_t**)in->data, in->linesize, |
inlink->format, inlink->w, inlink->h); |
|
p = in->interlaced_frame ? !in->top_field_first : 0; |
pullup_submit_field(s, b, p ); |
pullup_submit_field(s, b, p^1); |
|
if (in->repeat_pict) |
pullup_submit_field(s, b, p); |
|
pullup_release_buffer(b, 2); |
|
f = pullup_get_frame(s); |
if (!f) |
goto end; |
|
if (f->length < 2) { |
pullup_release_frame(f); |
f = pullup_get_frame(s); |
if (!f) |
goto end; |
if (f->length < 2) { |
pullup_release_frame(f); |
if (!in->repeat_pict) |
goto end; |
f = pullup_get_frame(s); |
if (!f) |
goto end; |
if (f->length < 2) { |
pullup_release_frame(f); |
goto end; |
} |
} |
} |
|
/* If the frame isn't already exportable... */ |
if (!f->buffer) |
pullup_pack_frame(s, f); |
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
if (!out) { |
ret = AVERROR(ENOMEM); |
goto end; |
} |
av_frame_copy_props(out, in); |
|
av_image_copy(out->data, out->linesize, |
(const uint8_t**)f->buffer->planes, s->planewidth, |
inlink->format, inlink->w, inlink->h); |
|
ret = ff_filter_frame(outlink, out); |
pullup_release_frame(f); |
end: |
av_frame_free(&in); |
return ret; |
} |
|
static av_cold void uninit(AVFilterContext *ctx) |
{ |
PullupContext *s = ctx->priv; |
int i; |
|
free_field_queue(s->head); |
s->last = NULL; |
|
for (i = 0; i < FF_ARRAY_ELEMS(s->buffers); i++) { |
av_freep(&s->buffers[i].planes[0]); |
av_freep(&s->buffers[i].planes[1]); |
av_freep(&s->buffers[i].planes[2]); |
} |
} |
|
static const AVFilterPad pullup_inputs[] = { |
{ |
.name = "default", |
.type = AVMEDIA_TYPE_VIDEO, |
.filter_frame = filter_frame, |
.config_props = config_input, |
}, |
{ NULL } |
}; |
|
static const AVFilterPad pullup_outputs[] = { |
{ |
.name = "default", |
.type = AVMEDIA_TYPE_VIDEO, |
.config_props = config_output, |
}, |
{ NULL } |
}; |
|
AVFilter ff_vf_pullup = { |
.name = "pullup", |
.description = NULL_IF_CONFIG_SMALL("Pullup from field sequence to frames."), |
.priv_size = sizeof(PullupContext), |
.priv_class = &pullup_class, |
.uninit = uninit, |
.query_formats = query_formats, |
.inputs = pullup_inputs, |
.outputs = pullup_outputs, |
}; |