449 lines
14 KiB
C
449 lines
14 KiB
C
/*
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* Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at>
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* 2010 James Darnley <james.darnley@gmail.com>
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*
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* FFmpeg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "libavutil/avassert.h"
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#include "libavutil/cpu.h"
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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#include "yadif.h"
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#undef NDEBUG
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#include <assert.h>
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#define PERM_RWP AV_PERM_WRITE | AV_PERM_PRESERVE | AV_PERM_REUSE
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#define CHECK(j)\
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{ int score = FFABS(cur[mrefs-1+(j)] - cur[prefs-1-(j)])\
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+ FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
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+ FFABS(cur[mrefs+1+(j)] - cur[prefs+1-(j)]);\
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if (score < spatial_score) {\
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spatial_score= score;\
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spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
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#define FILTER \
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for (x = 0; x < w; x++) { \
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int c = cur[mrefs]; \
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int d = (prev2[0] + next2[0])>>1; \
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int e = cur[prefs]; \
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int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
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int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
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int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
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int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
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int spatial_pred = (c+e) >> 1; \
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int spatial_score = FFABS(cur[mrefs - 1] - cur[prefs - 1]) + FFABS(c-e) \
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+ FFABS(cur[mrefs + 1] - cur[prefs + 1]) - 1; \
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\
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CHECK(-1) CHECK(-2) }} }} \
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CHECK( 1) CHECK( 2) }} }} \
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\
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if (mode < 2) { \
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int b = (prev2[2 * mrefs] + next2[2 * mrefs])>>1; \
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int f = (prev2[2 * prefs] + next2[2 * prefs])>>1; \
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int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \
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int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \
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\
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diff = FFMAX3(diff, min, -max); \
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} \
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\
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if (spatial_pred > d + diff) \
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spatial_pred = d + diff; \
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else if (spatial_pred < d - diff) \
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spatial_pred = d - diff; \
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\
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dst[0] = spatial_pred; \
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\
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dst++; \
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cur++; \
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prev++; \
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next++; \
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prev2++; \
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next2++; \
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}
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static void filter_line_c(uint8_t *dst,
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uint8_t *prev, uint8_t *cur, uint8_t *next,
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int w, int prefs, int mrefs, int parity, int mode)
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{
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int x;
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uint8_t *prev2 = parity ? prev : cur ;
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uint8_t *next2 = parity ? cur : next;
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FILTER
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}
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static void filter_line_c_16bit(uint16_t *dst,
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uint16_t *prev, uint16_t *cur, uint16_t *next,
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int w, int prefs, int mrefs, int parity,
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int mode)
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{
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int x;
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uint16_t *prev2 = parity ? prev : cur ;
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uint16_t *next2 = parity ? cur : next;
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mrefs /= 2;
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prefs /= 2;
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FILTER
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}
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static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
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int parity, int tff)
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{
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YADIFContext *yadif = ctx->priv;
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int y, i;
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for (i = 0; i < yadif->csp->nb_components; i++) {
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int w = dstpic->video->w;
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int h = dstpic->video->h;
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int refs = yadif->cur->linesize[i];
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int absrefs = FFABS(refs);
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int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8;
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if (i == 1 || i == 2) {
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/* Why is this not part of the per-plane description thing? */
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w >>= yadif->csp->log2_chroma_w;
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h >>= yadif->csp->log2_chroma_h;
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}
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if(yadif->temp_line_size < absrefs) {
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av_free(yadif->temp_line);
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yadif->temp_line = av_mallocz(2*64 + 5*absrefs);
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yadif->temp_line_size = absrefs;
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}
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for (y = 0; y < h; y++) {
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if ((y ^ parity) & 1) {
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uint8_t *prev = &yadif->prev->data[i][y * refs];
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uint8_t *cur = &yadif->cur ->data[i][y * refs];
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uint8_t *next = &yadif->next->data[i][y * refs];
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uint8_t *dst = &dstpic->data[i][y * dstpic->linesize[i]];
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int mode = y == 1 || y + 2 == h ? 2 : yadif->mode;
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int prefs = y+1<h ? refs : -refs;
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int mrefs = y ?-refs : refs;
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if(y<=1 || y+2>=h) {
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uint8_t *tmp = yadif->temp_line + 64 + 2*absrefs;
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if(mode<2)
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memcpy(tmp+2*mrefs, cur+2*mrefs, w*df);
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memcpy(tmp+mrefs, cur+mrefs, w*df);
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memcpy(tmp , cur , w*df);
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if(prefs != mrefs) {
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memcpy(tmp+prefs, cur+prefs, w*df);
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if(mode<2)
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memcpy(tmp+2*prefs, cur+2*prefs, w*df);
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}
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cur = tmp;
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}
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yadif->filter_line(dst, prev, cur, next, w,
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prefs, mrefs,
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parity ^ tff, mode);
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} else {
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memcpy(&dstpic->data[i][y * dstpic->linesize[i]],
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&yadif->cur->data[i][y * refs], w * df);
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}
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}
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}
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emms_c();
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}
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static int return_frame(AVFilterContext *ctx, int is_second)
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{
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YADIFContext *yadif = ctx->priv;
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AVFilterLink *link = ctx->outputs[0];
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int tff, ret;
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if (yadif->parity == -1) {
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tff = yadif->cur->video->interlaced ?
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yadif->cur->video->top_field_first : 1;
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} else {
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tff = yadif->parity ^ 1;
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}
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if (is_second) {
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yadif->out = ff_get_video_buffer(link, PERM_RWP, link->w, link->h);
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if (!yadif->out)
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return AVERROR(ENOMEM);
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avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
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yadif->out->video->interlaced = 0;
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}
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if (!yadif->csp)
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yadif->csp = av_pix_fmt_desc_get(link->format);
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if (yadif->csp->comp[0].depth_minus1 / 8 == 1)
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yadif->filter_line = (void*)filter_line_c_16bit;
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filter(ctx, yadif->out, tff ^ !is_second, tff);
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if (is_second) {
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int64_t cur_pts = yadif->cur->pts;
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int64_t next_pts = yadif->next->pts;
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if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
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yadif->out->pts = cur_pts + next_pts;
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} else {
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yadif->out->pts = AV_NOPTS_VALUE;
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}
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}
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ret = ff_filter_frame(ctx->outputs[0], yadif->out);
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yadif->frame_pending = (yadif->mode&1) && !is_second;
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return ret;
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}
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static int filter_frame(AVFilterLink *link, AVFilterBufferRef *picref)
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{
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AVFilterContext *ctx = link->dst;
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YADIFContext *yadif = ctx->priv;
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av_assert0(picref);
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if (yadif->frame_pending)
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return_frame(ctx, 1);
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if (yadif->prev)
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avfilter_unref_buffer(yadif->prev);
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yadif->prev = yadif->cur;
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yadif->cur = yadif->next;
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yadif->next = picref;
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if (!yadif->cur)
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return 0;
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if (yadif->deint && !yadif->cur->video->interlaced) {
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yadif->out = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE);
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if (!yadif->out)
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return AVERROR(ENOMEM);
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avfilter_unref_bufferp(&yadif->prev);
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if (yadif->out->pts != AV_NOPTS_VALUE)
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yadif->out->pts *= 2;
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return ff_filter_frame(ctx->outputs[0], yadif->out);
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}
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if (!yadif->prev &&
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!(yadif->prev = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE)))
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return AVERROR(ENOMEM);
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yadif->out = ff_get_video_buffer(ctx->outputs[0], PERM_RWP,
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link->w, link->h);
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if (!yadif->out)
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return AVERROR(ENOMEM);
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avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
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yadif->out->video->interlaced = 0;
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if (yadif->out->pts != AV_NOPTS_VALUE)
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yadif->out->pts *= 2;
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return return_frame(ctx, 0);
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}
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static int request_frame(AVFilterLink *link)
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{
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AVFilterContext *ctx = link->src;
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YADIFContext *yadif = ctx->priv;
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if (yadif->frame_pending) {
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return_frame(ctx, 1);
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return 0;
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}
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do {
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int ret;
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if (yadif->eof)
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return AVERROR_EOF;
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ret = ff_request_frame(link->src->inputs[0]);
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if (ret == AVERROR_EOF && yadif->cur) {
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AVFilterBufferRef *next = avfilter_ref_buffer(yadif->next, ~AV_PERM_WRITE);
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if (!next)
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return AVERROR(ENOMEM);
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next->pts = yadif->next->pts * 2 - yadif->cur->pts;
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filter_frame(link->src->inputs[0], next);
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yadif->eof = 1;
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} else if (ret < 0) {
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return ret;
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}
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} while (!yadif->cur);
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return 0;
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}
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#define OFFSET(x) offsetof(YADIFContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
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#define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
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static const AVOption yadif_options[] = {
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{ "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"},
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CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
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CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
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CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"),
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CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"),
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{ "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" },
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CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
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CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
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CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
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{ "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
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CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
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CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
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{NULL},
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};
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AVFILTER_DEFINE_CLASS(yadif);
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static av_cold void uninit(AVFilterContext *ctx)
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{
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YADIFContext *yadif = ctx->priv;
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avfilter_unref_bufferp(&yadif->prev);
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avfilter_unref_bufferp(&yadif->cur );
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avfilter_unref_bufferp(&yadif->next);
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av_freep(&yadif->temp_line); yadif->temp_line_size = 0;
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av_opt_free(yadif);
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}
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUVJ444P,
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AV_NE( AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE ),
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AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVJ440P,
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AV_NE( AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUV420P10LE ),
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AV_NE( AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUV422P10LE ),
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AV_NE( AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUV444P10LE ),
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AV_NE( AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUV420P16LE ),
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AV_NE( AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUV422P16LE ),
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AV_NE( AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUV444P16LE ),
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AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_YUVA422P,
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AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_NONE
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};
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ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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return 0;
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}
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static av_cold int init(AVFilterContext *ctx, const char *args)
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{
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YADIFContext *yadif = ctx->priv;
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static const char *shorthand[] = { "mode", "parity", "deint", NULL };
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int ret;
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yadif->csp = NULL;
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yadif->class = &yadif_class;
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av_opt_set_defaults(yadif);
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if ((ret = av_opt_set_from_string(yadif, args, shorthand, "=", ":")) < 0)
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return ret;
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yadif->filter_line = filter_line_c;
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if (ARCH_X86)
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ff_yadif_init_x86(yadif);
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av_log(ctx, AV_LOG_VERBOSE, "mode:%d parity:%d deint:%d\n",
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yadif->mode, yadif->parity, yadif->deint);
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return 0;
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}
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static int config_props(AVFilterLink *link)
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{
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AVFilterContext *ctx = link->src;
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YADIFContext *yadif = ctx->priv;
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link->time_base.num = link->src->inputs[0]->time_base.num;
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link->time_base.den = link->src->inputs[0]->time_base.den * 2;
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link->w = link->src->inputs[0]->w;
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link->h = link->src->inputs[0]->h;
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if(yadif->mode&1)
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link->frame_rate = av_mul_q(link->src->inputs[0]->frame_rate, (AVRational){2,1});
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if (link->w < 3 || link->h < 3) {
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av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n");
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return AVERROR(EINVAL);
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}
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return 0;
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}
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static const AVFilterPad avfilter_vf_yadif_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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.min_perms = AV_PERM_PRESERVE,
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},
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{ NULL }
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};
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static const AVFilterPad avfilter_vf_yadif_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.request_frame = request_frame,
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.config_props = config_props,
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},
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{ NULL }
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};
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AVFilter avfilter_vf_yadif = {
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.name = "yadif",
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.description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
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.priv_size = sizeof(YADIFContext),
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.init = init,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = avfilter_vf_yadif_inputs,
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.outputs = avfilter_vf_yadif_outputs,
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.priv_class = &yadif_class,
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};
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