| /* |
| * Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at> |
| * 2010 James Darnley <james.darnley@gmail.com> |
| * |
| * 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/cpu.h" |
| #include "libavutil/common.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "video.h" |
| #include "yadif.h" |
| |
| #undef NDEBUG |
| #include <assert.h> |
| |
| #define PERM_RWP AV_PERM_WRITE | AV_PERM_PRESERVE | AV_PERM_REUSE |
| |
| #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;\ |
| |
| #define FILTER \ |
| for (x = 0; x < w; 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; \ |
| 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(uint8_t *dst, |
| uint8_t *prev, uint8_t *cur, uint8_t *next, |
| int w, int prefs, int mrefs, int parity, int mode) |
| { |
| int x; |
| uint8_t *prev2 = parity ? prev : cur ; |
| uint8_t *next2 = parity ? cur : next; |
| |
| FILTER |
| } |
| |
| static void filter_line_c_16bit(uint16_t *dst, |
| uint16_t *prev, uint16_t *cur, uint16_t *next, |
| int w, int prefs, int mrefs, int parity, |
| int mode) |
| { |
| int x; |
| uint16_t *prev2 = parity ? prev : cur ; |
| uint16_t *next2 = parity ? cur : next; |
| mrefs /= 2; |
| prefs /= 2; |
| |
| FILTER |
| } |
| |
| static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic, |
| int parity, int tff) |
| { |
| YADIFContext *yadif = ctx->priv; |
| int y, i; |
| |
| for (i = 0; i < yadif->csp->nb_components; i++) { |
| int w = dstpic->video->w; |
| int h = dstpic->video->h; |
| int refs = yadif->cur->linesize[i]; |
| int absrefs = FFABS(refs); |
| int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8; |
| |
| if (i == 1 || i == 2) { |
| /* Why is this not part of the per-plane description thing? */ |
| w >>= yadif->csp->log2_chroma_w; |
| h >>= yadif->csp->log2_chroma_h; |
| } |
| |
| if(yadif->temp_line_size < absrefs) { |
| av_free(yadif->temp_line); |
| yadif->temp_line = av_mallocz(2*64 + 5*absrefs); |
| yadif->temp_line_size = absrefs; |
| } |
| |
| for (y = 0; y < h; y++) { |
| if ((y ^ parity) & 1) { |
| uint8_t *prev = &yadif->prev->data[i][y * refs]; |
| uint8_t *cur = &yadif->cur ->data[i][y * refs]; |
| uint8_t *next = &yadif->next->data[i][y * refs]; |
| uint8_t *dst = &dstpic->data[i][y * dstpic->linesize[i]]; |
| int mode = y == 1 || y + 2 == h ? 2 : yadif->mode; |
| int prefs = y+1<h ? refs : -refs; |
| int mrefs = y ?-refs : refs; |
| |
| if(y<=1 || y+2>=h) { |
| uint8_t *tmp = yadif->temp_line + 64 + 2*absrefs; |
| if(mode<2) |
| memcpy(tmp+2*mrefs, cur+2*mrefs, w*df); |
| memcpy(tmp+mrefs, cur+mrefs, w*df); |
| memcpy(tmp , cur , w*df); |
| if(prefs != mrefs) { |
| memcpy(tmp+prefs, cur+prefs, w*df); |
| if(mode<2) |
| memcpy(tmp+2*prefs, cur+2*prefs, w*df); |
| } |
| cur = tmp; |
| } |
| |
| yadif->filter_line(dst, prev, cur, next, w, |
| prefs, mrefs, |
| parity ^ tff, mode); |
| } else { |
| memcpy(&dstpic->data[i][y * dstpic->linesize[i]], |
| &yadif->cur->data[i][y * refs], w * df); |
| } |
| } |
| } |
| |
| emms_c(); |
| } |
| |
| static int return_frame(AVFilterContext *ctx, int is_second) |
| { |
| YADIFContext *yadif = ctx->priv; |
| AVFilterLink *link = ctx->outputs[0]; |
| int tff, ret; |
| |
| if (yadif->parity == -1) { |
| tff = yadif->cur->video->interlaced ? |
| yadif->cur->video->top_field_first : 1; |
| } else { |
| tff = yadif->parity ^ 1; |
| } |
| |
| if (is_second) { |
| yadif->out = ff_get_video_buffer(link, PERM_RWP, link->w, link->h); |
| if (!yadif->out) |
| return AVERROR(ENOMEM); |
| |
| avfilter_copy_buffer_ref_props(yadif->out, yadif->cur); |
| yadif->out->video->interlaced = 0; |
| } |
| |
| if (!yadif->csp) |
| yadif->csp = av_pix_fmt_desc_get(link->format); |
| if (yadif->csp->comp[0].depth_minus1 / 8 == 1) |
| yadif->filter_line = (void*)filter_line_c_16bit; |
| |
| filter(ctx, yadif->out, tff ^ !is_second, tff); |
| |
| if (is_second) { |
| int64_t cur_pts = yadif->cur->pts; |
| int64_t next_pts = yadif->next->pts; |
| |
| if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) { |
| yadif->out->pts = cur_pts + next_pts; |
| } else { |
| yadif->out->pts = AV_NOPTS_VALUE; |
| } |
| } |
| ret = ff_filter_frame(ctx->outputs[0], yadif->out); |
| |
| yadif->frame_pending = (yadif->mode&1) && !is_second; |
| return ret; |
| } |
| |
| static int filter_frame(AVFilterLink *link, AVFilterBufferRef *picref) |
| { |
| AVFilterContext *ctx = link->dst; |
| YADIFContext *yadif = ctx->priv; |
| |
| av_assert0(picref); |
| |
| if (yadif->frame_pending) |
| return_frame(ctx, 1); |
| |
| if (yadif->prev) |
| avfilter_unref_buffer(yadif->prev); |
| yadif->prev = yadif->cur; |
| yadif->cur = yadif->next; |
| yadif->next = picref; |
| |
| if (!yadif->cur) |
| return 0; |
| |
| if (yadif->deint && !yadif->cur->video->interlaced) { |
| yadif->out = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE); |
| if (!yadif->out) |
| return AVERROR(ENOMEM); |
| |
| avfilter_unref_bufferp(&yadif->prev); |
| if (yadif->out->pts != AV_NOPTS_VALUE) |
| yadif->out->pts *= 2; |
| return ff_filter_frame(ctx->outputs[0], yadif->out); |
| } |
| |
| if (!yadif->prev && |
| !(yadif->prev = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE))) |
| return AVERROR(ENOMEM); |
| |
| yadif->out = ff_get_video_buffer(ctx->outputs[0], PERM_RWP, |
| link->w, link->h); |
| if (!yadif->out) |
| return AVERROR(ENOMEM); |
| |
| avfilter_copy_buffer_ref_props(yadif->out, yadif->cur); |
| yadif->out->video->interlaced = 0; |
| |
| if (yadif->out->pts != AV_NOPTS_VALUE) |
| yadif->out->pts *= 2; |
| |
| return return_frame(ctx, 0); |
| } |
| |
| static int request_frame(AVFilterLink *link) |
| { |
| AVFilterContext *ctx = link->src; |
| YADIFContext *yadif = ctx->priv; |
| |
| if (yadif->frame_pending) { |
| return_frame(ctx, 1); |
| return 0; |
| } |
| |
| do { |
| int ret; |
| |
| if (yadif->eof) |
| return AVERROR_EOF; |
| |
| ret = ff_request_frame(link->src->inputs[0]); |
| |
| if (ret == AVERROR_EOF && yadif->cur) { |
| AVFilterBufferRef *next = avfilter_ref_buffer(yadif->next, ~AV_PERM_WRITE); |
| |
| if (!next) |
| return AVERROR(ENOMEM); |
| |
| next->pts = yadif->next->pts * 2 - yadif->cur->pts; |
| |
| filter_frame(link->src->inputs[0], next); |
| yadif->eof = 1; |
| } else if (ret < 0) { |
| return ret; |
| } |
| } while (!yadif->cur); |
| |
| return 0; |
| } |
| |
| #define OFFSET(x) offsetof(YADIFContext, x) |
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
| |
| #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit } |
| |
| static const AVOption yadif_options[] = { |
| { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"}, |
| CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"), |
| CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"), |
| CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"), |
| CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"), |
| |
| { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" }, |
| CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"), |
| CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"), |
| CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"), |
| |
| { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" }, |
| CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"), |
| CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"), |
| |
| {NULL}, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(yadif); |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| YADIFContext *yadif = ctx->priv; |
| |
| avfilter_unref_bufferp(&yadif->prev); |
| avfilter_unref_bufferp(&yadif->cur ); |
| avfilter_unref_bufferp(&yadif->next); |
| av_freep(&yadif->temp_line); yadif->temp_line_size = 0; |
| av_opt_free(yadif); |
| } |
| |
| 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_GRAY8, |
| AV_PIX_FMT_YUVJ420P, |
| AV_PIX_FMT_YUVJ422P, |
| AV_PIX_FMT_YUVJ444P, |
| AV_NE( AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE ), |
| AV_PIX_FMT_YUV440P, |
| AV_PIX_FMT_YUVJ440P, |
| AV_NE( AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUV420P10LE ), |
| AV_NE( AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUV422P10LE ), |
| AV_NE( AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUV444P10LE ), |
| AV_NE( AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUV420P16LE ), |
| AV_NE( AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUV422P16LE ), |
| AV_NE( AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUV444P16LE ), |
| AV_PIX_FMT_YUVA420P, |
| AV_PIX_FMT_YUVA422P, |
| AV_PIX_FMT_YUVA444P, |
| AV_PIX_FMT_NONE |
| }; |
| |
| ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
| |
| return 0; |
| } |
| |
| static av_cold int init(AVFilterContext *ctx, const char *args) |
| { |
| YADIFContext *yadif = ctx->priv; |
| static const char *shorthand[] = { "mode", "parity", "enable", NULL }; |
| int ret; |
| |
| yadif->csp = NULL; |
| |
| yadif->class = &yadif_class; |
| av_opt_set_defaults(yadif); |
| |
| if ((ret = av_opt_set_from_string(yadif, args, shorthand, "=", ":")) < 0) |
| return ret; |
| |
| yadif->filter_line = filter_line_c; |
| |
| if (ARCH_X86) |
| ff_yadif_init_x86(yadif); |
| |
| av_log(ctx, AV_LOG_VERBOSE, "mode:%d parity:%d deint:%d\n", |
| yadif->mode, yadif->parity, yadif->deint); |
| |
| return 0; |
| } |
| |
| static int config_props(AVFilterLink *link) |
| { |
| AVFilterContext *ctx = link->src; |
| YADIFContext *yadif = ctx->priv; |
| |
| link->time_base.num = link->src->inputs[0]->time_base.num; |
| link->time_base.den = link->src->inputs[0]->time_base.den * 2; |
| link->w = link->src->inputs[0]->w; |
| link->h = link->src->inputs[0]->h; |
| |
| if(yadif->mode&1) |
| link->frame_rate = av_mul_q(link->src->inputs[0]->frame_rate, (AVRational){2,1}); |
| |
| if (link->w < 3 || link->h < 3) { |
| av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| return 0; |
| } |
| |
| static const AVFilterPad avfilter_vf_yadif_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = filter_frame, |
| .min_perms = AV_PERM_PRESERVE, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad avfilter_vf_yadif_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .request_frame = request_frame, |
| .config_props = config_props, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter avfilter_vf_yadif = { |
| .name = "yadif", |
| .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."), |
| |
| .priv_size = sizeof(YADIFContext), |
| .init = init, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| |
| .inputs = avfilter_vf_yadif_inputs, |
| .outputs = avfilter_vf_yadif_outputs, |
| |
| .priv_class = &yadif_class, |
| }; |