cinelerra-5.1/cinelerra/vedit.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2009 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "asset.h"
  23 #include "bcsignals.h"
  24 #include "cache.h"
  25 #include "edl.h"
  26 #include "edlsession.h"
  27 #include "file.h"
  28 #include "mwindow.h"
  29 #include "patch.h"
  30 #include "playabletracks.h"
  31 #include "preferences.h"
  32 #include "mainsession.h"
  33 #include "trackcanvas.h"
  34 #include "tracks.h"
  35 #include "transportque.h"
  36 #include "units.h"
  37 #include "vedit.h"
  38 #include "vedits.h"
  39 #include "vframe.h"
  40 #include "vtrack.h"
  41
  42 VEdit::VEdit(EDL *edl, Edits *edits)
  43  : Edit(edl, edits)
  44 {
  45 }
  46
  47
  48 VEdit::~VEdit() { }
  49
  50 int VEdit::load_properties_derived(FileXML *xml)
  51 {
  52         channel = xml->tag.get_property("CHANNEL", (int64_t)0);
  53         return 0;
  54 }
  55
  56 Asset* VEdit::get_nested_asset(int64_t *source_position,
  57                 int64_t position, int direction)
  58 {
  59         double edit_frame_rate = nested_edl ?
  60                 nested_edl->session->frame_rate : asset->frame_rate;
  61 // Make position relative to edit
  62         double edit_position = (position - startproject + startsource) *
  63                         edit_frame_rate / edl->session->frame_rate;
  64         *source_position = Units::to_int64(edit_position);
  65         if( !nested_edl ) return asset;
  66
  67 // Descend into nested EDLs
  68         PlayableTracks playable_tracks(nested_edl,
  69                 *source_position, direction, TRACK_VIDEO, 1);
  70         if( !playable_tracks.size() ) return 0;
  71         VTrack *nested_track = (VTrack*)playable_tracks[0];
  72         VEdit* nested_edit = (VEdit*)nested_track->edits->
  73                 editof(*source_position, direction, 1);
  74         if( !nested_edit ) return  0;
  75         return nested_edit->get_nested_asset(source_position,
  76                 *source_position, direction);
  77 }
  78
  79 int VEdit::read_frame(VFrame *video_out, int64_t input_position, int direction,
  80                 CICache *cache, int use_nudge, int use_cache, int use_asynchronous)
  81 {
  82         File *file = 0;
  83         int result = 0;
  84         int64_t source_position = 0;
  85         const int debug = 0;
  86
  87         if(use_nudge) input_position += track->nudge;
  88 if(debug) printf("VEdit::read_frame %d source_position=%jd input_position=%jd\n",
  89   __LINE__, source_position, input_position);
  90
  91         Asset *asset = get_nested_asset(&source_position, input_position, direction);
  92         if( !asset ) result = 1;
  93
  94 if(debug) printf("VEdit::read_frame %d source_position=%jd input_position=%jd\n",
  95 __LINE__, source_position, input_position);
  96
  97         if( !result ) {
  98                 file = cache->check_out(asset, edl);
  99                 if( !file ) result = 1;
 100         }
 101 if(debug) printf("VEdit::read_frame %d path=%s source_position=%jd\n",
 102 __LINE__, asset->path, source_position);
 103
 104         if( !result ) {
 105                 if(direction == PLAY_REVERSE && source_position > 0)
 106                         --source_position;
 107                 if(use_asynchronous)
 108                         file->start_video_decode_thread();
 109                 else
 110                         file->stop_video_thread();
 111 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 112
 113                 file->set_layer(channel);
 114 //printf("VEdit::read_frame %d %lld\n", __LINE__, source_position);
 115                 file->set_video_position(source_position, 0);
 116
 117                 if(use_cache) file->set_cache_frames(use_cache);
 118                 result = file->read_frame(video_out);
 119 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 120                 if(use_cache) file->set_cache_frames(0);
 121
 122 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 123                 cache->check_in(asset);
 124 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 125         }
 126
 127 //for(int i = 0; i < video_out->get_w() * 3 * 20; i++) video_out->get_rows()[0][i] = 128;
 128         return result;
 129 }
 130
 131 int VEdit::copy_properties_derived(FileXML *xml, int64_t length_in_selection)
 132 {
 133         return 0;
 134 }
 135
 136 int VEdit::dump_derived()
 137 {
 138         printf("        VEdit::dump_derived\n");
 139         printf("                startproject %jd\n", startproject);
 140         printf("                length %jd\n", length);
 141         return 0;
 142 }
 143
 144 int64_t VEdit::get_source_end(int64_t default_)
 145 {
 146         if(!nested_edl && !asset) return default_;   // Infinity
 147
 148         if( nested_edl ) {
 149                 return (int64_t)(nested_edl->tracks->total_length() *
 150                         edl->session->frame_rate + 0.5);
 151         }
 152
 153         return asset->video_length < 0 ? default_ :
 154                  (int64_t)((double)asset->video_length /
 155                         asset->frame_rate * edl->session->frame_rate + 0.5);
 156 }