cinelerra-5.0/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 "format.inc"
  29 #include "mwindow.h"
  30 #include "patch.h"
  31 #include "playabletracks.h"
  32 #include "preferences.h"
  33 #include "mainsession.h"
  34 #include "trackcanvas.h"
  35 #include "tracks.h"
  36 #include "transportque.h"
  37 #include "units.h"
  38 #include "vedit.h"
  39 #include "vedits.h"
  40 #include "vframe.h"
  41 #include "vtrack.h"
  42
  43 VEdit::VEdit(EDL *edl, Edits *edits)
  44  : Edit(edl, edits)
  45 {
  46 }
  47
  48
  49 VEdit::~VEdit() { }
  50
  51 int VEdit::load_properties_derived(FileXML *xml)
  52 {
  53         channel = xml->tag.get_property("CHANNEL", (int64_t)0);
  54         return 0;
  55 }
  56
  57
  58
  59
  60
  61 Asset* VEdit::get_nested_asset(int64_t *source_position,
  62         int64_t position,
  63         int direction)
  64 {
  65         const int debug = 0;
  66         Asset *result = 0;
  67 // Make position relative to edit
  68         *source_position = position - startproject + startsource;
  69
  70 if(debug) printf("VEdit::get_nested_asset %d " _LD " " _LD " " _LD " " _LD "\n",
  71 __LINE__, *source_position, position, startproject, startsource);
  72
  73 // Descend into nested EDLs
  74         if(nested_edl)
  75         {
  76 // Convert position to nested EDL rate
  77 if(debug) printf("VEdit::get_nested_asset %d\n",
  78 __LINE__);
  79                 int64_t pos = *source_position;
  80                 if(direction == PLAY_REVERSE && pos > 0) --pos;
  81                 *source_position = Units::to_int64((double)pos *
  82                         nested_edl->session->frame_rate /
  83                         edl->session->frame_rate);
  84                 PlayableTracks *playable_tracks = new PlayableTracks(
  85                         nested_edl,
  86                         *source_position,
  87                         direction,
  88                         TRACK_VIDEO,
  89                         1);
  90                 if(playable_tracks->size())
  91                 {
  92                         VTrack *nested_track = (VTrack*)playable_tracks->get(0);
  93                         VEdit* nested_edit = (VEdit*)nested_track->edits->editof(
  94                                 *source_position,
  95                                 direction,
  96                                 1);
  97                         if(nested_edit)
  98                         {
  99                                 result = nested_edit->get_nested_asset(
 100                                         source_position,
 101                                         *source_position,
 102                                         direction);
 103                         }
 104                 }
 105
 106                 delete playable_tracks;
 107 if(debug) printf("VEdit::get_nested_asset %d\n",
 108 __LINE__);
 109                 return result;
 110         }
 111         else
 112         {
 113 // Convert position to asset rate
 114 if(debug) printf("VEdit::get_nested_asset %d " _LD " %f %f\n",
 115 __LINE__,
 116 *source_position,
 117 asset->frame_rate,
 118 edl->session->frame_rate);
 119                 int64_t pos = *source_position;
 120                 if(direction == PLAY_REVERSE && pos > 0) --pos;
 121                 *source_position = Units::to_int64((double)pos *
 122                         asset->frame_rate /
 123                         edl->session->frame_rate);
 124
 125                 return asset;
 126         }
 127 }
 128
 129
 130 int VEdit::read_frame(VFrame *video_out,
 131         int64_t input_position,
 132         int direction,
 133         CICache *cache,
 134         int use_nudge,
 135         int use_cache,
 136         int use_asynchronous)
 137 {
 138         int64_t source_position = 0;
 139         const int debug = 0;
 140
 141         if(use_nudge) input_position += track->nudge;
 142 if(debug) printf("VEdit::read_frame %d source_position=" _LD " input_position=" _LD "\n",
 143   __LINE__, source_position, input_position);
 144
 145         Asset *asset = get_nested_asset(&source_position,
 146                 input_position,
 147                 direction);
 148
 149 if(debug) printf("VEdit::read_frame %d source_position=" _LD " input_position=" _LD "\n",
 150 __LINE__, source_position, input_position);
 151
 152         File *file = cache->check_out(asset,
 153                 edl);
 154         int result = 0;
 155
 156 if(debug) printf("VEdit::read_frame %d path=%s source_position=" _LD "\n",
 157 __LINE__, asset->path, source_position);
 158
 159         if(file)
 160         {
 161
 162 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 163                 source_position = (direction == PLAY_FORWARD) ?
 164                         source_position :
 165                         (source_position - 1);
 166 if(debug) printf("VEdit::read_frame %d " _LD " " _LD "\n",
 167   __LINE__, input_position, source_position);
 168
 169                 if(use_asynchronous)
 170                         file->start_video_decode_thread();
 171                 else
 172                         file->stop_video_thread();
 173 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 174
 175                 file->set_layer(channel);
 176 //printf("VEdit::read_frame %d %lld\n", __LINE__, source_position);
 177                 file->set_video_position(source_position, 0);
 178
 179                 if(use_cache) file->set_cache_frames(use_cache);
 180                 result = file->read_frame(video_out);
 181
 182 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 183                 if(use_cache) file->set_cache_frames(0);
 184
 185 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 186                 cache->check_in(asset);
 187 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 188         }
 189         else
 190                 result = 1;
 191
 192         return result;
 193 }
 194
 195 int VEdit::copy_properties_derived(FileXML *xml, int64_t length_in_selection)
 196 {
 197         return 0;
 198 }
 199
 200 int VEdit::dump_derived()
 201 {
 202         printf("        VEdit::dump_derived\n");
 203         printf("                startproject " _LD "\n", startproject);
 204         printf("                length " _LD "\n", length);
 205         return 0;
 206 }
 207
 208 int64_t VEdit::get_source_end(int64_t default_)
 209 {
 210         if(!nested_edl && !asset) return default_;   // Infinity
 211
 212         if(nested_edl)
 213         {
 214                 return (int64_t)(nested_edl->tracks->total_playable_length() *
 215                         edl->session->frame_rate + 0.5);
 216         }
 217
 218         return (int64_t)((double)asset->video_length /
 219                 asset->frame_rate *
 220                 edl->session->frame_rate + 0.5);
 221 }