| /* |
| * Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at> |
| * 2010 James Darnley <james.darnley@gmail.com> |
| |
| * 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 |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/common.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/imgutils.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "video.h" |
| #include "yadif.h" |
| |
| typedef struct ThreadData { |
| AVFrame *frame; |
| int plane; |
| int w, h; |
| int parity; |
| int tff; |
| } ThreadData; |
| |
| #define CHECK(j)\ |
| { int score = FFABS(cur[mrefs - 1 + (j)] - cur[prefs - 1 - (j)])\ |
| + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\ |
| + FFABS(cur[mrefs + 1 + (j)] - cur[prefs + 1 - (j)]);\ |
| if (score < spatial_score) {\ |
| spatial_score= score;\ |
| spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\ |
| |
| /* The is_not_edge argument here controls when the code will enter a branch |
| * which reads up to and including x-3 and x+3. */ |
| |
| #define FILTER(start, end, is_not_edge) \ |
| for (x = start; x < end; x++) { \ |
| int c = cur[mrefs]; \ |
| int d = (prev2[0] + next2[0])>>1; \ |
| int e = cur[prefs]; \ |
| int temporal_diff0 = FFABS(prev2[0] - next2[0]); \ |
| int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \ |
| int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \ |
| int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \ |
| int spatial_pred = (c+e) >> 1; \ |
| \ |
| if (is_not_edge) {\ |
| int spatial_score = FFABS(cur[mrefs - 1] - cur[prefs - 1]) + FFABS(c-e) \ |
| + FFABS(cur[mrefs + 1] - cur[prefs + 1]) - 1; \ |
| CHECK(-1) CHECK(-2) }} }} \ |
| CHECK( 1) CHECK( 2) }} }} \ |
| }\ |
| \ |
| if (!(mode&2)) { \ |
| int b = (prev2[2 * mrefs] + next2[2 * mrefs])>>1; \ |
| int f = (prev2[2 * prefs] + next2[2 * prefs])>>1; \ |
| int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \ |
| int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \ |
| \ |
| diff = FFMAX3(diff, min, -max); \ |
| } \ |
| \ |
| if (spatial_pred > d + diff) \ |
| spatial_pred = d + diff; \ |
| else if (spatial_pred < d - diff) \ |
| spatial_pred = d - diff; \ |
| \ |
| dst[0] = spatial_pred; \ |
| \ |
| dst++; \ |
| cur++; \ |
| prev++; \ |
| next++; \ |
| prev2++; \ |
| next2++; \ |
| } |
| |
| static void filter_line_c(void *dst1, |
| void *prev1, void *cur1, void *next1, |
| int w, int prefs, int mrefs, int parity, int mode) |
| { |
| uint8_t *dst = dst1; |
| uint8_t *prev = prev1; |
| uint8_t *cur = cur1; |
| uint8_t *next = next1; |
| int x; |
| uint8_t *prev2 = parity ? prev : cur ; |
| uint8_t *next2 = parity ? cur : next; |
| |
| /* The function is called with the pointers already pointing to data[3] and |
| * with 6 subtracted from the width. This allows the FILTER macro to be |
| * called so that it processes all the pixels normally. A constant value of |
| * true for is_not_edge lets the compiler ignore the if statement. */ |
| FILTER(0, w, 1) |
| } |
| |
| #define MAX_ALIGN 8 |
| static void filter_edges(void *dst1, void *prev1, void *cur1, void *next1, |
| int w, int prefs, int mrefs, int parity, int mode) |
| { |
| uint8_t *dst = dst1; |
| uint8_t *prev = prev1; |
| uint8_t *cur = cur1; |
| uint8_t *next = next1; |
| int x; |
| uint8_t *prev2 = parity ? prev : cur ; |
| uint8_t *next2 = parity ? cur : next; |
| |
| const int edge = MAX_ALIGN - 1; |
| |
| /* Only edge pixels need to be processed here. A constant value of false |
| * for is_not_edge should let the compiler ignore the whole branch. */ |
| FILTER(0, 3, 0) |
| |
| dst = (uint8_t*)dst1 + w - edge; |
| prev = (uint8_t*)prev1 + w - edge; |
| cur = (uint8_t*)cur1 + w - edge; |
| next = (uint8_t*)next1 + w - edge; |
| prev2 = (uint8_t*)(parity ? prev : cur); |
| next2 = (uint8_t*)(parity ? cur : next); |
| |
| FILTER(w - edge, w - 3, 1) |
| FILTER(w - 3, w, 0) |
| } |
| |
| |
| static void filter_line_c_16bit(void *dst1, |
| void *prev1, void *cur1, void *next1, |
| int w, int prefs, int mrefs, int parity, |
| int mode) |
| { |
| uint16_t *dst = dst1; |
| uint16_t *prev = prev1; |
| uint16_t *cur = cur1; |
| uint16_t *next = next1; |
| int x; |
| uint16_t *prev2 = parity ? prev : cur ; |
| uint16_t *next2 = parity ? cur : next; |
| mrefs /= 2; |
| prefs /= 2; |
| |
| FILTER(0, w, 1) |
| } |
| |
| static void filter_edges_16bit(void *dst1, void *prev1, void *cur1, void *next1, |
| int w, int prefs, int mrefs, int parity, int mode) |
| { |
| uint16_t *dst = dst1; |
| uint16_t *prev = prev1; |
| uint16_t *cur = cur1; |
| uint16_t *next = next1; |
| int x; |
| uint16_t *prev2 = parity ? prev : cur ; |
| uint16_t *next2 = parity ? cur : next; |
| |
| const int edge = MAX_ALIGN / 2 - 1; |
| |
| mrefs /= 2; |
| prefs /= 2; |
| |
| FILTER(0, 3, 0) |
| |
| dst = (uint16_t*)dst1 + w - edge; |
| prev = (uint16_t*)prev1 + w - edge; |
| cur = (uint16_t*)cur1 + w - edge; |
| next = (uint16_t*)next1 + w - edge; |
| prev2 = (uint16_t*)(parity ? prev : cur); |
| next2 = (uint16_t*)(parity ? cur : next); |
| |
| FILTER(w - edge, w - 3, 1) |
| FILTER(w - 3, w, 0) |
| } |
| |
| static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| YADIFContext *s = ctx->priv; |
| ThreadData *td = arg; |
| int refs = s->cur->linesize[td->plane]; |
| int df = (s->csp->comp[td->plane].depth + 7) / 8; |
| int pix_3 = 3 * df; |
| int slice_start = (td->h * jobnr ) / nb_jobs; |
| int slice_end = (td->h * (jobnr+1)) / nb_jobs; |
| int y; |
| int edge = 3 + MAX_ALIGN / df - 1; |
| |
| /* filtering reads 3 pixels to the left/right; to avoid invalid reads, |
| * we need to call the c variant which avoids this for border pixels |
| */ |
| for (y = slice_start; y < slice_end; y++) { |
| if ((y ^ td->parity) & 1) { |
| uint8_t *prev = &s->prev->data[td->plane][y * refs]; |
| uint8_t *cur = &s->cur ->data[td->plane][y * refs]; |
| uint8_t *next = &s->next->data[td->plane][y * refs]; |
| uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]]; |
| int mode = y == 1 || y + 2 == td->h ? 2 : s->mode; |
| s->filter_line(dst + pix_3, prev + pix_3, cur + pix_3, |
| next + pix_3, td->w - edge, |
| y + 1 < td->h ? refs : -refs, |
| y ? -refs : refs, |
| td->parity ^ td->tff, mode); |
| s->filter_edges(dst, prev, cur, next, td->w, |
| y + 1 < td->h ? refs : -refs, |
| y ? -refs : refs, |
| td->parity ^ td->tff, mode); |
| } else { |
| memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]], |
| &s->cur->data[td->plane][y * refs], td->w * df); |
| } |
| } |
| return 0; |
| } |
| |
| static void filter(AVFilterContext *ctx, AVFrame *dstpic, |
| int parity, int tff) |
| { |
| YADIFContext *yadif = ctx->priv; |
| ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff }; |
| int i; |
| |
| for (i = 0; i < yadif->csp->nb_components; i++) { |
| int w = dstpic->width; |
| int h = dstpic->height; |
| |
| if (i == 1 || i == 2) { |
| w = AV_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w); |
| h = AV_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h); |
| } |
| |
| |
| td.w = w; |
| td.h = h; |
| td.plane = i; |
| |
| ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(h, ff_filter_get_nb_threads(ctx))); |
| } |
| |
| emms_c(); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| YADIFContext *yadif = ctx->priv; |
| |
| av_frame_free(&yadif->prev); |
| av_frame_free(&yadif->cur ); |
| av_frame_free(&yadif->next); |
| } |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, |
| AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV440P, |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16, |
| AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, |
| AV_PIX_FMT_YUVJ440P, |
| AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, |
| AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, |
| AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, |
| AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, |
| AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, |
| AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, |
| AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, |
| AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, |
| AV_PIX_FMT_GBRAP, |
| 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); |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| YADIFContext *s = ctx->priv; |
| |
| outlink->time_base.num = ctx->inputs[0]->time_base.num; |
| outlink->time_base.den = ctx->inputs[0]->time_base.den * 2; |
| outlink->w = ctx->inputs[0]->w; |
| outlink->h = ctx->inputs[0]->h; |
| |
| if(s->mode & 1) |
| outlink->frame_rate = av_mul_q(ctx->inputs[0]->frame_rate, |
| (AVRational){2, 1}); |
| |
| if (outlink->w < 3 || outlink->h < 3) { |
| av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| s->csp = av_pix_fmt_desc_get(outlink->format); |
| s->filter = filter; |
| if (s->csp->comp[0].depth > 8) { |
| s->filter_line = filter_line_c_16bit; |
| s->filter_edges = filter_edges_16bit; |
| } else { |
| s->filter_line = filter_line_c; |
| s->filter_edges = filter_edges; |
| } |
| |
| if (ARCH_X86) |
| ff_yadif_init_x86(s); |
| |
| return 0; |
| } |
| |
| |
| static const AVClass yadif_class = { |
| .class_name = "yadif", |
| .item_name = av_default_item_name, |
| .option = ff_yadif_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| .category = AV_CLASS_CATEGORY_FILTER, |
| }; |
| |
| static const AVFilterPad avfilter_vf_yadif_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = ff_yadif_filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad avfilter_vf_yadif_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .request_frame = ff_yadif_request_frame, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_yadif = { |
| .name = "yadif", |
| .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."), |
| .priv_size = sizeof(YADIFContext), |
| .priv_class = &yadif_class, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .inputs = avfilter_vf_yadif_inputs, |
| .outputs = avfilter_vf_yadif_outputs, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
