/* * 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/imgutils.h" #include "internal.h" #include "video.h" #include "yadif.h" 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->flags & AV_FRAME_FLAG_INTERLACED) ? !!(yadif->cur->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) : 1; } else { tff = yadif->parity ^ 1; } if (is_second) { yadif->out = ff_get_video_buffer(link, link->w, link->h); if (!yadif->out) return AVERROR(ENOMEM); av_frame_copy_props(yadif->out, yadif->cur); #if FF_API_INTERLACED_FRAME FF_DISABLE_DEPRECATION_WARNINGS yadif->out->interlaced_frame = 0; FF_ENABLE_DEPRECATION_WARNINGS #endif yadif->out->flags &= ~AV_FRAME_FLAG_INTERLACED; if (yadif->current_field == YADIF_FIELD_BACK_END) yadif->current_field = YADIF_FIELD_END; } yadif->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; } } ff_ccfifo_inject(&yadif->cc_fifo, yadif->out); ret = ff_filter_frame(ctx->outputs[0], yadif->out); yadif->frame_pending = (yadif->mode&1) && !is_second; return ret; } static int checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b) { int i; for (i = 0; i < yadif->csp->nb_components; i++) if (a->linesize[i] != b->linesize[i]) return 1; return 0; } static void fixstride(AVFilterLink *link, AVFrame *f) { AVFrame *dst = ff_default_get_video_buffer(link, f->width, f->height); if(!dst) return; av_frame_copy_props(dst, f); av_image_copy2(dst->data, dst->linesize, f->data, f->linesize, dst->format, dst->width, dst->height); av_frame_unref(f); av_frame_move_ref(f, dst); av_frame_free(&dst); } int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame) { AVFilterContext *ctx = link->dst; YADIFContext *yadif = ctx->priv; av_assert0(frame); ff_ccfifo_extract(&yadif->cc_fifo, frame); if (yadif->frame_pending) return_frame(ctx, 1); if (yadif->prev) av_frame_free(&yadif->prev); yadif->prev = yadif->cur; yadif->cur = yadif->next; yadif->next = frame; if (!yadif->cur) { yadif->cur = av_frame_clone(yadif->next); if (!yadif->cur) return AVERROR(ENOMEM); yadif->current_field = YADIF_FIELD_END; } if (checkstride(yadif, yadif->next, yadif->cur)) { av_log(ctx, AV_LOG_VERBOSE, "Reallocating frame due to differing stride\n"); fixstride(link, yadif->next); } if (checkstride(yadif, yadif->next, yadif->cur)) fixstride(link, yadif->cur); if (yadif->prev && checkstride(yadif, yadif->next, yadif->prev)) fixstride(link, yadif->prev); if (checkstride(yadif, yadif->next, yadif->cur) || (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))) { av_log(ctx, AV_LOG_ERROR, "Failed to reallocate frame\n"); return -1; } if (!yadif->prev) return 0; if ((yadif->deint && !(yadif->cur->flags & AV_FRAME_FLAG_INTERLACED)) || ctx->is_disabled || (yadif->deint && !(yadif->prev->flags & AV_FRAME_FLAG_INTERLACED) && yadif->prev->repeat_pict) || (yadif->deint && !(yadif->next->flags & AV_FRAME_FLAG_INTERLACED) && yadif->next->repeat_pict) ) { yadif->out = av_frame_clone(yadif->cur); if (!yadif->out) return AVERROR(ENOMEM); ff_ccfifo_inject(&yadif->cc_fifo, yadif->out); av_frame_free(&yadif->prev); if (yadif->out->pts != AV_NOPTS_VALUE) yadif->out->pts *= 2; yadif->out->duration *= 2; return ff_filter_frame(ctx->outputs[0], yadif->out); } yadif->out = ff_get_video_buffer(ctx->outputs[0], link->w, link->h); if (!yadif->out) return AVERROR(ENOMEM); av_frame_copy_props(yadif->out, yadif->cur); #if FF_API_INTERLACED_FRAME FF_DISABLE_DEPRECATION_WARNINGS yadif->out->interlaced_frame = 0; FF_ENABLE_DEPRECATION_WARNINGS #endif yadif->out->flags &= ~AV_FRAME_FLAG_INTERLACED; if (yadif->out->pts != AV_NOPTS_VALUE) yadif->out->pts *= 2; if (!(yadif->mode & 1)) yadif->out->duration *= 2; return return_frame(ctx, 0); } int ff_yadif_request_frame(AVFilterLink *link) { AVFilterContext *ctx = link->src; YADIFContext *yadif = ctx->priv; int ret; if (yadif->frame_pending) { return_frame(ctx, 1); return 0; } if (yadif->eof) return AVERROR_EOF; ret = ff_request_frame(ctx->inputs[0]); if (ret == AVERROR_EOF && yadif->cur) { AVFrame *next = av_frame_clone(yadif->next); if (!next) return AVERROR(ENOMEM); yadif->current_field = YADIF_FIELD_BACK_END; next->pts = yadif->next->pts * 2 - yadif->cur->pts; ff_yadif_filter_frame(ctx->inputs[0], next); yadif->eof = 1; } else if (ret < 0) { return ret; } 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 } const AVOption ff_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 } };