yading@11: /* yading@11: * Copyright (C) 2006-2011 Michael Niedermayer yading@11: * 2010 James Darnley yading@11: * yading@11: * FFmpeg is free software; you can redistribute it and/or modify yading@11: * it under the terms of the GNU General Public License as published by yading@11: * the Free Software Foundation; either version 2 of the License, or yading@11: * (at your option) any later version. yading@11: * yading@11: * FFmpeg is distributed in the hope that it will be useful, yading@11: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the yading@11: * GNU General Public License for more details. yading@11: * yading@11: * You should have received a copy of the GNU General Public License along yading@11: * with FFmpeg; if not, write to the Free Software Foundation, Inc., yading@11: * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. yading@11: */ yading@11: yading@11: #include "libavutil/avassert.h" yading@11: #include "libavutil/cpu.h" yading@11: #include "libavutil/common.h" yading@11: #include "libavutil/opt.h" yading@11: #include "libavutil/pixdesc.h" yading@11: #include "avfilter.h" yading@11: #include "formats.h" yading@11: #include "internal.h" yading@11: #include "video.h" yading@11: #include "yadif.h" yading@11: yading@11: #undef NDEBUG yading@11: #include yading@11: yading@11: #define CHECK(j)\ yading@11: { int score = FFABS(cur[mrefs - 1 + (j)] - cur[prefs - 1 - (j)])\ yading@11: + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\ yading@11: + FFABS(cur[mrefs + 1 + (j)] - cur[prefs + 1 - (j)]);\ yading@11: if (score < spatial_score) {\ yading@11: spatial_score= score;\ yading@11: spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\ yading@11: yading@11: /* The is_not_edge argument here controls when the code will enter a branch yading@11: * which reads up to and including x-3 and x+3. */ yading@11: yading@11: #define FILTER(start, end, is_not_edge) \ yading@11: for (x = start; x < end; x++) { \ yading@11: int c = cur[mrefs]; \ yading@11: int d = (prev2[0] + next2[0])>>1; \ yading@11: int e = cur[prefs]; \ yading@11: int temporal_diff0 = FFABS(prev2[0] - next2[0]); \ yading@11: int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \ yading@11: int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \ yading@11: int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \ yading@11: int spatial_pred = (c+e) >> 1; \ yading@11: \ yading@11: if (is_not_edge) {\ yading@11: int spatial_score = FFABS(cur[mrefs - 1] - cur[prefs - 1]) + FFABS(c-e) \ yading@11: + FFABS(cur[mrefs + 1] - cur[prefs + 1]) - 1; \ yading@11: CHECK(-1) CHECK(-2) }} }} \ yading@11: CHECK( 1) CHECK( 2) }} }} \ yading@11: }\ yading@11: \ yading@11: if (mode < 2) { \ yading@11: int b = (prev2[2 * mrefs] + next2[2 * mrefs])>>1; \ yading@11: int f = (prev2[2 * prefs] + next2[2 * prefs])>>1; \ yading@11: int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \ yading@11: int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \ yading@11: \ yading@11: diff = FFMAX3(diff, min, -max); \ yading@11: } \ yading@11: \ yading@11: if (spatial_pred > d + diff) \ yading@11: spatial_pred = d + diff; \ yading@11: else if (spatial_pred < d - diff) \ yading@11: spatial_pred = d - diff; \ yading@11: \ yading@11: dst[0] = spatial_pred; \ yading@11: \ yading@11: dst++; \ yading@11: cur++; \ yading@11: prev++; \ yading@11: next++; \ yading@11: prev2++; \ yading@11: next2++; \ yading@11: } yading@11: yading@11: static void filter_line_c(void *dst1, yading@11: void *prev1, void *cur1, void *next1, yading@11: int w, int prefs, int mrefs, int parity, int mode) yading@11: { yading@11: uint8_t *dst = dst1; yading@11: uint8_t *prev = prev1; yading@11: uint8_t *cur = cur1; yading@11: uint8_t *next = next1; yading@11: int x; yading@11: uint8_t *prev2 = parity ? prev : cur ; yading@11: uint8_t *next2 = parity ? cur : next; yading@11: yading@11: /* The function is called with the pointers already pointing to data[3] and yading@11: * with 6 subtracted from the width. This allows the FILTER macro to be yading@11: * called so that it processes all the pixels normally. A constant value of yading@11: * true for is_not_edge lets the compiler ignore the if statement. */ yading@11: FILTER(0, w, 1) yading@11: } yading@11: yading@11: static void filter_edges(void *dst1, void *prev1, void *cur1, void *next1, yading@11: int w, int prefs, int mrefs, int parity, int mode) yading@11: { yading@11: uint8_t *dst = dst1; yading@11: uint8_t *prev = prev1; yading@11: uint8_t *cur = cur1; yading@11: uint8_t *next = next1; yading@11: int x; yading@11: uint8_t *prev2 = parity ? prev : cur ; yading@11: uint8_t *next2 = parity ? cur : next; yading@11: yading@11: /* Only edge pixels need to be processed here. A constant value of false yading@11: * for is_not_edge should let the compiler ignore the whole branch. */ yading@11: FILTER(0, 3, 0) yading@11: yading@11: dst = (uint8_t*)dst1 + w - 3; yading@11: prev = (uint8_t*)prev1 + w - 3; yading@11: cur = (uint8_t*)cur1 + w - 3; yading@11: next = (uint8_t*)next1 + w - 3; yading@11: prev2 = (uint8_t*)(parity ? prev : cur); yading@11: next2 = (uint8_t*)(parity ? cur : next); yading@11: yading@11: FILTER(w - 3, w, 0) yading@11: } yading@11: yading@11: yading@11: static void filter_line_c_16bit(void *dst1, yading@11: void *prev1, void *cur1, void *next1, yading@11: int w, int prefs, int mrefs, int parity, yading@11: int mode) yading@11: { yading@11: uint16_t *dst = dst1; yading@11: uint16_t *prev = prev1; yading@11: uint16_t *cur = cur1; yading@11: uint16_t *next = next1; yading@11: int x; yading@11: uint16_t *prev2 = parity ? prev : cur ; yading@11: uint16_t *next2 = parity ? cur : next; yading@11: mrefs /= 2; yading@11: prefs /= 2; yading@11: yading@11: FILTER(0, w, 1) yading@11: } yading@11: yading@11: static void filter_edges_16bit(void *dst1, void *prev1, void *cur1, void *next1, yading@11: int w, int prefs, int mrefs, int parity, int mode) yading@11: { yading@11: uint16_t *dst = dst1; yading@11: uint16_t *prev = prev1; yading@11: uint16_t *cur = cur1; yading@11: uint16_t *next = next1; yading@11: int x; yading@11: uint16_t *prev2 = parity ? prev : cur ; yading@11: uint16_t *next2 = parity ? cur : next; yading@11: mrefs /= 2; yading@11: prefs /= 2; yading@11: yading@11: FILTER(0, 3, 0) yading@11: yading@11: dst = (uint16_t*)dst1 + w - 3; yading@11: prev = (uint16_t*)prev1 + w - 3; yading@11: cur = (uint16_t*)cur1 + w - 3; yading@11: next = (uint16_t*)next1 + w - 3; yading@11: prev2 = (uint16_t*)(parity ? prev : cur); yading@11: next2 = (uint16_t*)(parity ? cur : next); yading@11: yading@11: FILTER(w - 3, w, 0) yading@11: } yading@11: yading@11: static void filter(AVFilterContext *ctx, AVFrame *dstpic, yading@11: int parity, int tff) yading@11: { yading@11: YADIFContext *yadif = ctx->priv; yading@11: int y, i; yading@11: yading@11: for (i = 0; i < yadif->csp->nb_components; i++) { yading@11: int w = dstpic->width; yading@11: int h = dstpic->height; yading@11: int refs = yadif->cur->linesize[i]; yading@11: int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8; yading@11: int pix_3 = 3 * df; yading@11: yading@11: if (i == 1 || i == 2) { yading@11: /* Why is this not part of the per-plane description thing? */ yading@11: w >>= yadif->csp->log2_chroma_w; yading@11: h >>= yadif->csp->log2_chroma_h; yading@11: } yading@11: yading@11: /* filtering reads 3 pixels to the left/right; to avoid invalid reads, yading@11: * we need to call the c variant which avoids this for border pixels yading@11: */ yading@11: yading@11: for (y = 0; y < h; y++) { yading@11: if ((y ^ parity) & 1) { yading@11: uint8_t *prev = &yadif->prev->data[i][y * refs]; yading@11: uint8_t *cur = &yadif->cur ->data[i][y * refs]; yading@11: uint8_t *next = &yadif->next->data[i][y * refs]; yading@11: uint8_t *dst = &dstpic->data[i][y * dstpic->linesize[i]]; yading@11: int mode = y == 1 || y + 2 == h ? 2 : yadif->mode; yading@11: yadif->filter_line(dst + pix_3, prev + pix_3, cur + pix_3, yading@11: next + pix_3, w - 6, yading@11: y + 1 < h ? refs : -refs, yading@11: y ? -refs : refs, yading@11: parity ^ tff, mode); yading@11: yadif->filter_edges(dst, prev, cur, next, w, yading@11: y + 1 < h ? refs : -refs, yading@11: y ? -refs : refs, yading@11: parity ^ tff, mode); yading@11: } else { yading@11: memcpy(&dstpic->data[i][y * dstpic->linesize[i]], yading@11: &yadif->cur->data[i][y * refs], w * df); yading@11: } yading@11: } yading@11: } yading@11: yading@11: emms_c(); yading@11: } yading@11: yading@11: static int return_frame(AVFilterContext *ctx, int is_second) yading@11: { yading@11: YADIFContext *yadif = ctx->priv; yading@11: AVFilterLink *link = ctx->outputs[0]; yading@11: int tff, ret; yading@11: yading@11: if (yadif->parity == -1) { yading@11: tff = yadif->cur->interlaced_frame ? yading@11: yadif->cur->top_field_first : 1; yading@11: } else { yading@11: tff = yadif->parity ^ 1; yading@11: } yading@11: yading@11: if (is_second) { yading@11: yadif->out = ff_get_video_buffer(link, link->w, link->h); yading@11: if (!yadif->out) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: av_frame_copy_props(yadif->out, yadif->cur); yading@11: yadif->out->interlaced_frame = 0; yading@11: } yading@11: yading@11: filter(ctx, yadif->out, tff ^ !is_second, tff); yading@11: yading@11: if (is_second) { yading@11: int64_t cur_pts = yadif->cur->pts; yading@11: int64_t next_pts = yadif->next->pts; yading@11: yading@11: if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) { yading@11: yadif->out->pts = cur_pts + next_pts; yading@11: } else { yading@11: yadif->out->pts = AV_NOPTS_VALUE; yading@11: } yading@11: } yading@11: ret = ff_filter_frame(ctx->outputs[0], yadif->out); yading@11: yading@11: yadif->frame_pending = (yadif->mode&1) && !is_second; yading@11: return ret; yading@11: } yading@11: yading@11: static int filter_frame(AVFilterLink *link, AVFrame *frame) yading@11: { yading@11: AVFilterContext *ctx = link->dst; yading@11: YADIFContext *yadif = ctx->priv; yading@11: yading@11: av_assert0(frame); yading@11: yading@11: if (yadif->frame_pending) yading@11: return_frame(ctx, 1); yading@11: yading@11: if (yadif->prev) yading@11: av_frame_free(&yadif->prev); yading@11: yadif->prev = yadif->cur; yading@11: yadif->cur = yadif->next; yading@11: yadif->next = frame; yading@11: yading@11: if (!yadif->cur) yading@11: return 0; yading@11: yading@11: if (yadif->deint && !yadif->cur->interlaced_frame) { yading@11: yadif->out = av_frame_clone(yadif->cur); yading@11: if (!yadif->out) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: av_frame_free(&yadif->prev); yading@11: if (yadif->out->pts != AV_NOPTS_VALUE) yading@11: yadif->out->pts *= 2; yading@11: return ff_filter_frame(ctx->outputs[0], yadif->out); yading@11: } yading@11: yading@11: if (!yadif->prev && yading@11: !(yadif->prev = av_frame_clone(yadif->cur))) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: yadif->out = ff_get_video_buffer(ctx->outputs[0], link->w, link->h); yading@11: if (!yadif->out) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: av_frame_copy_props(yadif->out, yadif->cur); yading@11: yadif->out->interlaced_frame = 0; yading@11: yading@11: if (yadif->out->pts != AV_NOPTS_VALUE) yading@11: yadif->out->pts *= 2; yading@11: yading@11: return return_frame(ctx, 0); yading@11: } yading@11: yading@11: static int request_frame(AVFilterLink *link) yading@11: { yading@11: AVFilterContext *ctx = link->src; yading@11: YADIFContext *yadif = ctx->priv; yading@11: yading@11: if (yadif->frame_pending) { yading@11: return_frame(ctx, 1); yading@11: return 0; yading@11: } yading@11: yading@11: do { yading@11: int ret; yading@11: yading@11: if (yadif->eof) yading@11: return AVERROR_EOF; yading@11: yading@11: ret = ff_request_frame(link->src->inputs[0]); yading@11: yading@11: if (ret == AVERROR_EOF && yadif->cur) { yading@11: AVFrame *next = av_frame_clone(yadif->next); yading@11: yading@11: if (!next) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: next->pts = yadif->next->pts * 2 - yadif->cur->pts; yading@11: yading@11: filter_frame(link->src->inputs[0], next); yading@11: yadif->eof = 1; yading@11: } else if (ret < 0) { yading@11: return ret; yading@11: } yading@11: } while (!yadif->cur); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static av_cold void uninit(AVFilterContext *ctx) yading@11: { yading@11: YADIFContext *yadif = ctx->priv; yading@11: yading@11: av_frame_free(&yadif->prev); yading@11: av_frame_free(&yadif->cur ); yading@11: av_frame_free(&yadif->next); yading@11: } yading@11: yading@11: static int query_formats(AVFilterContext *ctx) yading@11: { yading@11: static const enum AVPixelFormat pix_fmts[] = { yading@11: AV_PIX_FMT_YUV420P, yading@11: AV_PIX_FMT_YUV422P, yading@11: AV_PIX_FMT_YUV444P, yading@11: AV_PIX_FMT_YUV410P, yading@11: AV_PIX_FMT_YUV411P, yading@11: AV_PIX_FMT_GRAY8, yading@11: AV_PIX_FMT_YUVJ420P, yading@11: AV_PIX_FMT_YUVJ422P, yading@11: AV_PIX_FMT_YUVJ444P, yading@11: AV_NE( AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE ), yading@11: AV_PIX_FMT_YUV440P, yading@11: AV_PIX_FMT_YUVJ440P, yading@11: AV_NE( AV_PIX_FMT_YUV420P9BE, AV_PIX_FMT_YUV420P9LE ), yading@11: AV_NE( AV_PIX_FMT_YUV422P9BE, AV_PIX_FMT_YUV422P9LE ), yading@11: AV_NE( AV_PIX_FMT_YUV444P9BE, AV_PIX_FMT_YUV444P9LE ), yading@11: AV_NE( AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUV420P10LE ), yading@11: AV_NE( AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUV422P10LE ), yading@11: AV_NE( AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUV444P10LE ), yading@11: AV_NE( AV_PIX_FMT_YUV420P12BE, AV_PIX_FMT_YUV420P12LE ), yading@11: AV_NE( AV_PIX_FMT_YUV422P12BE, AV_PIX_FMT_YUV422P12LE ), yading@11: AV_NE( AV_PIX_FMT_YUV444P12BE, AV_PIX_FMT_YUV444P12LE ), yading@11: AV_NE( AV_PIX_FMT_YUV420P14BE, AV_PIX_FMT_YUV420P14LE ), yading@11: AV_NE( AV_PIX_FMT_YUV422P14BE, AV_PIX_FMT_YUV422P14LE ), yading@11: AV_NE( AV_PIX_FMT_YUV444P14BE, AV_PIX_FMT_YUV444P14LE ), yading@11: AV_NE( AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUV420P16LE ), yading@11: AV_NE( AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUV422P16LE ), yading@11: AV_NE( AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUV444P16LE ), yading@11: AV_PIX_FMT_YUVA420P, yading@11: AV_PIX_FMT_YUVA422P, yading@11: AV_PIX_FMT_YUVA444P, yading@11: AV_PIX_FMT_NONE yading@11: }; yading@11: yading@11: ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static int config_props(AVFilterLink *link) yading@11: { yading@11: AVFilterContext *ctx = link->src; yading@11: YADIFContext *s = link->src->priv; yading@11: yading@11: link->time_base.num = link->src->inputs[0]->time_base.num; yading@11: link->time_base.den = link->src->inputs[0]->time_base.den * 2; yading@11: link->w = link->src->inputs[0]->w; yading@11: link->h = link->src->inputs[0]->h; yading@11: yading@11: if(s->mode&1) yading@11: link->frame_rate = av_mul_q(link->src->inputs[0]->frame_rate, (AVRational){2,1}); yading@11: yading@11: if (link->w < 3 || link->h < 3) { yading@11: av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n"); yading@11: return AVERROR(EINVAL); yading@11: } yading@11: yading@11: s->csp = av_pix_fmt_desc_get(link->format); yading@11: if (s->csp->comp[0].depth_minus1 / 8 == 1) { yading@11: s->filter_line = filter_line_c_16bit; yading@11: s->filter_edges = filter_edges_16bit; yading@11: } else { yading@11: s->filter_line = filter_line_c; yading@11: s->filter_edges = filter_edges; yading@11: } yading@11: yading@11: if (ARCH_X86) yading@11: ff_yadif_init_x86(s); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: yading@11: #define OFFSET(x) offsetof(YADIFContext, x) yading@11: #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM yading@11: yading@11: #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit } yading@11: yading@11: static const AVOption yadif_options[] = { yading@11: { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"}, yading@11: CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"), yading@11: CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"), yading@11: CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"), yading@11: CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"), yading@11: yading@11: { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" }, yading@11: CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"), yading@11: CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"), yading@11: CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"), yading@11: yading@11: { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" }, yading@11: CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"), yading@11: CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"), yading@11: yading@11: {NULL}, yading@11: }; yading@11: yading@11: AVFILTER_DEFINE_CLASS(yadif); yading@11: yading@11: static const AVFilterPad avfilter_vf_yadif_inputs[] = { yading@11: { yading@11: .name = "default", yading@11: .type = AVMEDIA_TYPE_VIDEO, yading@11: .filter_frame = filter_frame, yading@11: }, yading@11: { NULL } yading@11: }; yading@11: yading@11: static const AVFilterPad avfilter_vf_yadif_outputs[] = { yading@11: { yading@11: .name = "default", yading@11: .type = AVMEDIA_TYPE_VIDEO, yading@11: .request_frame = request_frame, yading@11: .config_props = config_props, yading@11: }, yading@11: { NULL } yading@11: }; yading@11: yading@11: AVFilter avfilter_vf_yadif = { yading@11: .name = "yadif", yading@11: .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."), yading@11: yading@11: .priv_size = sizeof(YADIFContext), yading@11: .priv_class = &yadif_class, yading@11: .uninit = uninit, yading@11: .query_formats = query_formats, yading@11: yading@11: .inputs = avfilter_vf_yadif_inputs, yading@11: .outputs = avfilter_vf_yadif_outputs, yading@11: };