mirror of https://github.com/mpv-player/mpv
438 lines
12 KiB
C
438 lines
12 KiB
C
// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
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// vim:ts=8:sw=8:noet:ai:
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/*
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Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <assert.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "libvo/fastmemcpy.h"
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#include "m_option.h"
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#include "m_struct.h"
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#include "libass/ass.h"
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#include "libass/ass_mp.h"
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#define _r(c) ((c)>>24)
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#define _g(c) (((c)>>16)&0xFF)
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#define _b(c) (((c)>>8)&0xFF)
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#define _a(c) ((c)&0xFF)
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#define rgba2y(c) ( (( 263*_r(c) + 516*_g(c) + 100*_b(c)) >> 10) + 16 )
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#define rgba2u(c) ( ((-152*_r(c) - 298*_g(c) + 450*_b(c)) >> 10) + 128 )
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#define rgba2v(c) ( (( 450*_r(c) - 376*_g(c) - 73*_b(c)) >> 10) + 128 )
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static struct vf_priv_s {
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int outh, outw;
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unsigned int outfmt;
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// 1 = auto-added filter: insert only if chain does not support EOSD already
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// 0 = insert always
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int auto_insert;
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ass_instance_t* ass_priv;
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unsigned char* planes[3];
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unsigned char* dirty_rows;
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} vf_priv_dflt;
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extern int opt_screen_size_x;
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extern int opt_screen_size_y;
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extern ass_track_t* ass_track;
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extern float sub_delay;
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extern int sub_visibility;
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static int config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt)
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{
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ass_settings_t settings;
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if (outfmt == IMGFMT_IF09) return 0;
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vf->priv->outh = height + ass_top_margin + ass_bottom_margin;
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vf->priv->outw = width;
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if(!opt_screen_size_x && !opt_screen_size_y){
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d_width = d_width * vf->priv->outw / width;
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d_height = d_height * vf->priv->outh / height;
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}
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vf->priv->planes[1] = malloc(vf->priv->outw * vf->priv->outh);
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vf->priv->planes[2] = malloc(vf->priv->outw * vf->priv->outh);
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vf->priv->dirty_rows = malloc(vf->priv->outh);
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if (vf->priv->ass_priv) {
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memset(&settings, 0, sizeof(ass_settings_t));
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settings.frame_width = vf->priv->outw;
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settings.frame_height = vf->priv->outh;
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settings.font_size_coeff = ass_font_scale;
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settings.line_spacing = ass_line_spacing;
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settings.top_margin = ass_top_margin;
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settings.bottom_margin = ass_bottom_margin;
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settings.use_margins = ass_use_margins;
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settings.aspect = ((double)d_width) / d_height;
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ass_configure(vf->priv->ass_priv, &settings);
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}
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return vf_next_config(vf, vf->priv->outw, vf->priv->outh, d_width, d_height, flags, outfmt);
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}
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static void get_image(struct vf_instance_s* vf, mp_image_t *mpi)
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{
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if(mpi->type == MP_IMGTYPE_IPB) return;
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if(mpi->flags & MP_IMGFLAG_PRESERVE) return;
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if(mpi->imgfmt != vf->priv->outfmt) return; // colorspace differ
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// width never changes, always try full DR
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mpi->priv = vf->dmpi = vf_get_image(vf->next, mpi->imgfmt,
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mpi->type, mpi->flags,
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vf->priv->outw,
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vf->priv->outh);
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if((vf->dmpi->flags & MP_IMGFLAG_DRAW_CALLBACK) &&
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!(vf->dmpi->flags & MP_IMGFLAG_DIRECT)){
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mp_msg(MSGT_VFILTER, MSGL_INFO, MSGTR_MPCODECS_FullDRNotPossible);
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return;
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}
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// set up mpi as a cropped-down image of dmpi:
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if(mpi->flags&MP_IMGFLAG_PLANAR){
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mpi->planes[0]=vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0];
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mpi->planes[1]=vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1];
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mpi->planes[2]=vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2];
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mpi->stride[1]=vf->dmpi->stride[1];
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mpi->stride[2]=vf->dmpi->stride[2];
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} else {
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mpi->planes[0]=vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0];
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}
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mpi->stride[0]=vf->dmpi->stride[0];
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mpi->width=vf->dmpi->width;
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mpi->flags|=MP_IMGFLAG_DIRECT;
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mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
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// vf->dmpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
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}
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static void blank(mp_image_t *mpi, int y1, int y2)
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{
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int color[3] = {16, 128, 128}; // black (YUV)
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int y;
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unsigned char* dst;
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int chroma_rows = (y2 - y1) >> mpi->chroma_y_shift;
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dst = mpi->planes[0] + y1 * mpi->stride[0];
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for (y = 0; y < y2 - y1; ++y) {
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memset(dst, color[0], mpi->w);
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dst += mpi->stride[0];
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}
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dst = mpi->planes[1] + (y1 >> mpi->chroma_y_shift) * mpi->stride[1];
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for (y = 0; y < chroma_rows ; ++y) {
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memset(dst, color[1], mpi->chroma_width);
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dst += mpi->stride[1];
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}
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dst = mpi->planes[2] + (y1 >> mpi->chroma_y_shift) * mpi->stride[2];
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for (y = 0; y < chroma_rows ; ++y) {
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memset(dst, color[2], mpi->chroma_width);
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dst += mpi->stride[2];
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}
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}
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static int prepare_image(struct vf_instance_s* vf, mp_image_t *mpi)
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{
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if(mpi->flags&MP_IMGFLAG_DIRECT || mpi->flags&MP_IMGFLAG_DRAW_CALLBACK){
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vf->dmpi = mpi->priv;
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if (!vf->dmpi) { mp_msg(MSGT_VFILTER, MSGL_WARN, MSGTR_MPCODECS_FunWhydowegetNULL); return 0; }
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mpi->priv = NULL;
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// we've used DR, so we're ready...
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if (ass_top_margin)
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blank(vf->dmpi, 0, ass_top_margin);
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if (ass_bottom_margin)
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blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
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if(!(mpi->flags&MP_IMGFLAG_PLANAR))
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vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
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return 0;
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}
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// hope we'll get DR buffer:
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vf->dmpi = vf_get_image(vf->next, vf->priv->outfmt,
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
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vf->priv->outw, vf->priv->outh);
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// copy mpi->dmpi...
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if(mpi->flags&MP_IMGFLAG_PLANAR){
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memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
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mpi->planes[0], mpi->w, mpi->h,
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vf->dmpi->stride[0], mpi->stride[0]);
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memcpy_pic(vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1],
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mpi->planes[1], mpi->w >> mpi->chroma_x_shift, mpi->h >> mpi->chroma_y_shift,
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vf->dmpi->stride[1], mpi->stride[1]);
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memcpy_pic(vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2],
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mpi->planes[2], mpi->w >> mpi->chroma_x_shift, mpi->h >> mpi->chroma_y_shift,
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vf->dmpi->stride[2], mpi->stride[2]);
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} else {
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memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
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mpi->planes[0], mpi->w*(vf->dmpi->bpp/8), mpi->h,
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vf->dmpi->stride[0], mpi->stride[0]);
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vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
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}
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if (ass_top_margin)
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blank(vf->dmpi, 0, ass_top_margin);
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if (ass_bottom_margin)
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blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
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return 0;
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}
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/**
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* \brief Copy specified rows from render_context.dmpi to render_context.planes, upsampling to 4:4:4
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*/
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static void copy_from_image(struct vf_instance_s* vf, int first_row, int last_row)
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{
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int pl;
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int i, j, k;
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unsigned char val;
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int chroma_rows;
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first_row -= (first_row % 2);
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last_row += (last_row % 2);
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chroma_rows = (last_row - first_row) / 2;
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for (pl = 1; pl < 3; ++pl) {
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int dst_stride = vf->dmpi->stride[pl] * 2;
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int src_stride = vf->dmpi->stride[pl];
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unsigned char* src = vf->dmpi->planes[pl] + (first_row/2) * src_stride;
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unsigned char* dst = vf->priv->planes[pl] + first_row * dst_stride;
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unsigned char* dst_next = dst + dst_stride;
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for(i = 0; i < chroma_rows; ++i)
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{
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if ((vf->priv->dirty_rows[first_row + i*2] == 0) ||
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(vf->priv->dirty_rows[first_row + i*2 + 1] == 0)) {
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for (j = 0, k = 0; j < vf->dmpi->chroma_width; ++j, k+=2) {
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val = *(src + j);
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*(dst + k) = val;
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*(dst + k + 1) = val;
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*(dst_next + k) = val;
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*(dst_next + k + 1) = val;
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}
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}
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src += src_stride;
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dst = dst_next + dst_stride;
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dst_next = dst + dst_stride;
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}
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}
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for (i = first_row; i < last_row; ++i)
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vf->priv->dirty_rows[i] = 1;
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}
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/**
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* \brief Copy all previously copied rows back to render_context.dmpi
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*/
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static void copy_to_image(struct vf_instance_s* vf)
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{
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int pl;
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int i, j, k;
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for (pl = 1; pl < 3; ++pl) {
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int dst_stride = vf->dmpi->stride[pl];
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int src_stride = vf->dmpi->stride[pl] * 2;
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unsigned char* dst = vf->dmpi->planes[pl];
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unsigned char* src = vf->priv->planes[pl];
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unsigned char* src_next = vf->priv->planes[pl] + src_stride;
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for(i = 0; i < vf->dmpi->chroma_height; ++i)
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{
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if ((vf->priv->dirty_rows[i*2] == 1)) {
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assert(vf->priv->dirty_rows[i*2 + 1] == 1);
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for (j = 0, k = 0; j < vf->dmpi->chroma_width; ++j, k+=2) {
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unsigned val = 0;
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val += *(src + k);
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val += *(src + k + 1);
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val += *(src_next + k);
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val += *(src_next + k + 1);
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*(dst + j) = val >> 2;
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}
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}
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dst += dst_stride;
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src = src_next + src_stride;
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src_next = src + src_stride;
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}
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}
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}
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static void my_draw_bitmap(struct vf_instance_s* vf, unsigned char* bitmap, int bitmap_w, int bitmap_h, int stride, int dst_x, int dst_y, unsigned color)
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{
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unsigned char y = rgba2y(color);
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unsigned char u = rgba2u(color);
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unsigned char v = rgba2v(color);
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unsigned char opacity = 255 - _a(color);
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unsigned char *src, *dsty, *dstu, *dstv;
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int i, j;
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mp_image_t* dmpi = vf->dmpi;
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src = bitmap;
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dsty = dmpi->planes[0] + dst_x + dst_y * dmpi->stride[0];
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dstu = vf->priv->planes[1] + dst_x + dst_y * 2 * dmpi->chroma_width;
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dstv = vf->priv->planes[2] + dst_x + dst_y * 2 * dmpi->chroma_width;
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for (i = 0; i < bitmap_h; ++i) {
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for (j = 0; j < bitmap_w; ++j) {
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unsigned k = ((unsigned)src[j]) * opacity / 255;
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dsty[j] = (k*y + (255-k)*dsty[j]) / 255;
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dstu[j] = (k*u + (255-k)*dstu[j]) / 255;
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dstv[j] = (k*v + (255-k)*dstv[j]) / 255;
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}
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src += stride;
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dsty += dmpi->stride[0];
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dstu += 2 * dmpi->chroma_width;
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dstv += 2 * dmpi->chroma_width;
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}
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}
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static int render_frame(struct vf_instance_s* vf, mp_image_t *mpi, const ass_image_t* img)
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{
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if (img) {
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memset(vf->priv->dirty_rows, 0, vf->priv->outh); // reset dirty rows
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while (img) {
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copy_from_image(vf, img->dst_y, img->dst_y + img->h);
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my_draw_bitmap(vf, img->bitmap, img->w, img->h, img->stride,
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img->dst_x, img->dst_y, img->color);
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img = img->next;
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}
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copy_to_image(vf);
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}
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return 0;
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}
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static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts)
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{
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ass_image_t* images = 0;
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if (sub_visibility && vf->priv->ass_priv && ass_track && (pts != MP_NOPTS_VALUE))
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images = ass_render_frame(vf->priv->ass_priv, ass_track, (pts+sub_delay) * 1000 + .5);
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prepare_image(vf, mpi);
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if (images) render_frame(vf, mpi, images);
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return vf_next_put_image(vf, vf->dmpi, pts);
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}
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static int query_format(struct vf_instance_s* vf, unsigned int fmt)
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{
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switch(fmt){
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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return vf_next_query_format(vf, vf->priv->outfmt);
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}
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return 0;
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}
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static int control(vf_instance_t *vf, int request, void *data)
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{
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switch (request) {
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case VFCTRL_INIT_EOSD:
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vf->priv->ass_priv = ass_init();
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return vf->priv->ass_priv ? CONTROL_TRUE : CONTROL_FALSE;
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case VFCTRL_DRAW_EOSD:
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if (vf->priv->ass_priv) return CONTROL_TRUE;
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break;
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}
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return vf_next_control(vf, request, data);
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}
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static void uninit(struct vf_instance_s* vf)
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{
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if (vf->priv->ass_priv)
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ass_done(vf->priv->ass_priv);
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if (vf->priv->planes[1])
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free(vf->priv->planes[1]);
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if (vf->priv->planes[2])
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free(vf->priv->planes[2]);
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if (vf->priv->dirty_rows)
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free(vf->priv->dirty_rows);
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}
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static unsigned int fmt_list[]={
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IMGFMT_YV12,
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IMGFMT_I420,
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IMGFMT_IYUV,
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0
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};
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static int open(vf_instance_t *vf, char* args)
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{
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int flags;
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vf->priv->outfmt = vf_match_csp(&vf->next,fmt_list,IMGFMT_YV12);
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if (vf->priv->outfmt)
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flags = vf_next_query_format(vf, vf->priv->outfmt);
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if (!vf->priv->outfmt || (vf->priv->auto_insert && flags&VFCAP_EOSD))
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{
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uninit(vf);
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return 0;
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}
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if (vf->priv->auto_insert)
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mp_msg(MSGT_VFILTER, MSGL_INFO, "[ass] auto-open\n");
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vf->config = config;
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vf->query_format = query_format;
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vf->uninit = uninit;
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vf->control = control;
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vf->get_image = get_image;
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vf->put_image = put_image;
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vf->default_caps=VFCAP_EOSD;
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return 1;
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}
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#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
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static m_option_t vf_opts_fields[] = {
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{"auto", ST_OFF(auto_insert), CONF_TYPE_FLAG, 0 , 0, 1, NULL},
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{ NULL, NULL, 0, 0, 0, 0, NULL }
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};
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static m_struct_t vf_opts = {
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"ass",
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sizeof(struct vf_priv_s),
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&vf_priv_dflt,
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vf_opts_fields
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};
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vf_info_t vf_info_ass = {
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"Render ASS/SSA subtitles",
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"ass",
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"Evgeniy Stepanov",
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"",
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open,
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&vf_opts
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};
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