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290 lines
9.6 KiB
290 lines
9.6 KiB
/* |
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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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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 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/imgutils.h" |
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#include "filters.h" |
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#include "video.h" |
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#include "yadif.h" |
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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->flags & AV_FRAME_FLAG_INTERLACED) ? |
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!!(yadif->cur->flags & AV_FRAME_FLAG_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, link->w, link->h); |
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if (!yadif->out) |
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return AVERROR(ENOMEM); |
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av_frame_copy_props(yadif->out, yadif->cur); |
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#if FF_API_INTERLACED_FRAME |
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FF_DISABLE_DEPRECATION_WARNINGS |
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yadif->out->interlaced_frame = 0; |
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FF_ENABLE_DEPRECATION_WARNINGS |
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#endif |
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yadif->out->flags &= ~AV_FRAME_FLAG_INTERLACED; |
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if (yadif->current_field == YADIF_FIELD_BACK_END) |
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yadif->current_field = YADIF_FIELD_END; |
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} |
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yadif->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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if (yadif->pts_multiplier == 1) { |
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yadif->out->pts >>= 1; |
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yadif->out->duration >>= 1; |
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} |
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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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ff_ccfifo_inject(&yadif->cc_fifo, yadif->out); |
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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 checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b) |
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{ |
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int i; |
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for (i = 0; i < yadif->csp->nb_components; i++) |
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if (a->linesize[i] != b->linesize[i]) |
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return 1; |
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return 0; |
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} |
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static void fixstride(AVFilterLink *link, AVFrame *f) |
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{ |
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AVFrame *dst = ff_default_get_video_buffer(link, f->width, f->height); |
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if(!dst) |
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return; |
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av_frame_copy_props(dst, f); |
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av_image_copy2(dst->data, dst->linesize, |
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f->data, f->linesize, |
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dst->format, dst->width, dst->height); |
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av_frame_unref(f); |
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av_frame_move_ref(f, dst); |
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av_frame_free(&dst); |
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} |
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int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame) |
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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(frame); |
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ff_ccfifo_extract(&yadif->cc_fifo, frame); |
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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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av_frame_free(&yadif->prev); |
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yadif->prev = yadif->cur; |
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yadif->cur = yadif->next; |
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yadif->next = frame; |
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if (!yadif->cur) { |
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yadif->cur = av_frame_clone(yadif->next); |
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if (!yadif->cur) |
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return AVERROR(ENOMEM); |
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yadif->current_field = YADIF_FIELD_END; |
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} |
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if (checkstride(yadif, yadif->next, yadif->cur)) { |
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av_log(ctx, AV_LOG_VERBOSE, "Reallocating frame due to differing stride\n"); |
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fixstride(link, yadif->next); |
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} |
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if (checkstride(yadif, yadif->next, yadif->cur)) |
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fixstride(link, yadif->cur); |
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if (yadif->prev && checkstride(yadif, yadif->next, yadif->prev)) |
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fixstride(link, yadif->prev); |
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if (checkstride(yadif, yadif->next, yadif->cur) || (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))) { |
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av_log(ctx, AV_LOG_ERROR, "Failed to reallocate frame\n"); |
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return -1; |
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} |
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if (!yadif->prev) |
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return 0; |
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if ((yadif->deint && !(yadif->cur->flags & AV_FRAME_FLAG_INTERLACED)) || |
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ctx->is_disabled || |
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(yadif->deint && !(yadif->prev->flags & AV_FRAME_FLAG_INTERLACED) && yadif->prev->repeat_pict) || |
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(yadif->deint && !(yadif->next->flags & AV_FRAME_FLAG_INTERLACED) && yadif->next->repeat_pict) |
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) { |
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yadif->out = av_frame_clone(yadif->cur); |
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if (!yadif->out) |
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return AVERROR(ENOMEM); |
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ff_ccfifo_inject(&yadif->cc_fifo, yadif->out); |
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av_frame_free(&yadif->prev); |
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if (yadif->out->pts != AV_NOPTS_VALUE) |
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yadif->out->pts *= yadif->pts_multiplier; |
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yadif->out->duration *= yadif->pts_multiplier; |
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return ff_filter_frame(ctx->outputs[0], yadif->out); |
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} |
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yadif->out = ff_get_video_buffer(ctx->outputs[0], link->w, link->h); |
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if (!yadif->out) |
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return AVERROR(ENOMEM); |
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av_frame_copy_props(yadif->out, yadif->cur); |
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#if FF_API_INTERLACED_FRAME |
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FF_DISABLE_DEPRECATION_WARNINGS |
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yadif->out->interlaced_frame = 0; |
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FF_ENABLE_DEPRECATION_WARNINGS |
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#endif |
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yadif->out->flags &= ~AV_FRAME_FLAG_INTERLACED; |
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if (yadif->out->pts != AV_NOPTS_VALUE) |
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yadif->out->pts *= yadif->pts_multiplier; |
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if (!(yadif->mode & 1)) |
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yadif->out->duration *= yadif->pts_multiplier; |
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else if (yadif->pts_multiplier == 1) |
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yadif->out->duration >>= 1; |
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return return_frame(ctx, 0); |
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} |
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int ff_yadif_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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int ret; |
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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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if (yadif->eof) |
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return AVERROR_EOF; |
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ret = ff_request_frame(ctx->inputs[0]); |
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if (ret == AVERROR_EOF && yadif->cur) { |
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AVFrame *next = av_frame_clone(yadif->next); |
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if (!next) |
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return AVERROR(ENOMEM); |
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yadif->current_field = YADIF_FIELD_BACK_END; |
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next->pts = yadif->next->pts * 2 - yadif->cur->pts; |
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ff_yadif_filter_frame(ctx->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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return 0; |
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} |
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int ff_yadif_config_output_common(AVFilterLink *outlink) |
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{ |
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AVFilterContext *ctx = outlink->src; |
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FilterLink *il = ff_filter_link(ctx->inputs[0]); |
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FilterLink *ol = ff_filter_link(outlink); |
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YADIFContext *yadif = ctx->priv; |
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AVRational tb = ctx->inputs[0]->time_base; |
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int ret; |
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if (av_reduce(&outlink->time_base.num, &outlink->time_base.den, tb.num, tb.den * 2LL, INT_MAX)) { |
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yadif->pts_multiplier = 2; |
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} else { |
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av_log(ctx, AV_LOG_WARNING, "Cannot use exact output timebase\n"); |
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outlink->time_base = tb; |
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yadif->pts_multiplier = 1; |
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} |
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outlink->w = ctx->inputs[0]->w; |
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outlink->h = ctx->inputs[0]->h; |
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if (outlink->w < 3 || outlink->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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if(yadif->mode & 1) |
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ol->frame_rate = av_mul_q(il->frame_rate, |
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(AVRational){2, 1}); |
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else |
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ol->frame_rate = il->frame_rate; |
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ret = ff_ccfifo_init(&yadif->cc_fifo, ol->frame_rate, ctx); |
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if (ret < 0) { |
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av_log(ctx, AV_LOG_ERROR, "Failure to setup CC FIFO queue\n"); |
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return ret; |
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} |
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return 0; |
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} |
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void ff_yadif_uninit(AVFilterContext *ctx) |
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{ |
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YADIFContext *yadif = ctx->priv; |
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av_frame_free(&yadif->prev); |
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av_frame_free(&yadif->cur ); |
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av_frame_free(&yadif->next); |
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ff_ccfifo_uninit(&yadif->cc_fifo); |
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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, u) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, .unit = u } |
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const AVOption ff_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, .unit = "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, .unit = "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, .unit = "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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