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,
  58         int direction)
  59 {
  60         const int debug = 0;
  61         Asset *result = 0;
  62 // Make position relative to edit
  63         *source_position = position - startproject + startsource;
  64
  65 if(debug) printf("VEdit::get_nested_asset %d %jd %jd %jd %jd\n",
  66 __LINE__, *source_position, position, startproject, startsource);
  67
  68 // Descend into nested EDLs
  69         if(nested_edl)
  70         {
  71 // Convert position to nested EDL rate
  72 if(debug) printf("VEdit::get_nested_asset %d\n",
  73 __LINE__);
  74                 int64_t pos = *source_position;
  75                 if(direction == PLAY_REVERSE && pos > 0) --pos;
  76                 *source_position = Units::to_int64((double)pos *
  77                         nested_edl->session->frame_rate /
  78                         edl->session->frame_rate);
  79                 PlayableTracks *playable_tracks = new PlayableTracks(
  80                         nested_edl,
  81                         *source_position,
  82                         direction,
  83                         TRACK_VIDEO,
  84                         1);
  85                 if(playable_tracks->size())
  86                 {
  87                         VTrack *nested_track = (VTrack*)playable_tracks->get(0);
  88                         VEdit* nested_edit = (VEdit*)nested_track->edits->editof(
  89                                 *source_position,
  90                                 direction,
  91                                 1);
  92                         if(nested_edit)
  93                         {
  94                                 result = nested_edit->get_nested_asset(
  95                                         source_position,
  96                                         *source_position,
  97                                         direction);
  98                         }
  99                 }
 100
 101                 delete playable_tracks;
 102 if(debug) printf("VEdit::get_nested_asset %d\n",
 103 __LINE__);
 104                 return result;
 105         }
 106         else
 107         {
 108 // Convert position to asset rate
 109 if(debug) printf("VEdit::get_nested_asset %d %jd %f %f\n",
 110 __LINE__,
 111 *source_position,
 112 asset->frame_rate,
 113 edl->session->frame_rate);
 114                 int64_t pos = *source_position;
 115                 if(direction == PLAY_REVERSE && pos > 0) --pos;
 116                 *source_position = Units::to_int64((double)pos *
 117                         asset->frame_rate /
 118                         edl->session->frame_rate);
 119
 120                 return asset;
 121         }
 122 }
 123
 124 int VEdit::read_frame(VFrame *video_out,
 125         int64_t input_position,
 126         int direction,
 127         CICache *cache,
 128         int use_nudge,
 129         int use_cache,
 130         int use_asynchronous)
 131 {
 132         int64_t source_position = 0;
 133         const int debug = 0;
 134
 135         if(use_nudge) input_position += track->nudge;
 136 if(debug) printf("VEdit::read_frame %d source_position=%jd input_position=%jd\n",
 137   __LINE__, source_position, input_position);
 138
 139         Asset *asset = get_nested_asset(&source_position,
 140                 input_position,
 141                 direction);
 142
 143 if(debug) printf("VEdit::read_frame %d source_position=%jd input_position=%jd\n",
 144 __LINE__, source_position, input_position);
 145
 146         File *file = cache->check_out(asset,
 147                 edl);
 148         int result = 0;
 149
 150 if(debug) printf("VEdit::read_frame %d path=%s source_position=%jd\n",
 151 __LINE__, asset->path, source_position);
 152
 153         if(file)
 154         {
 155
 156 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 157                 source_position = (direction == PLAY_FORWARD) ?
 158                         source_position :
 159                         (source_position - 1);
 160 if(debug) printf("VEdit::read_frame %d %jd %jd\n",
 161   __LINE__, input_position, source_position);
 162
 163                 if(use_asynchronous)
 164                         file->start_video_decode_thread();
 165                 else
 166                         file->stop_video_thread();
 167 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 168
 169                 file->set_layer(channel);
 170 //printf("VEdit::read_frame %d %lld\n", __LINE__, source_position);
 171                 file->set_video_position(source_position, 0);
 172
 173                 if(use_cache) file->set_cache_frames(use_cache);
 174                 result = file->read_frame(video_out);
 175 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 176                 if(use_cache) file->set_cache_frames(0);
 177
 178 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 179                 cache->check_in(asset);
 180 if(debug) printf("VEdit::read_frame %d\n", __LINE__);
 181         }
 182         else
 183                 result = 1;
 184
 185 //for(int i = 0; i < video_out->get_w() * 3 * 20; i++) video_out->get_rows()[0][i] = 128;
 186         return result;
 187 }
 188
 189 int VEdit::copy_properties_derived(FileXML *xml, int64_t length_in_selection)
 190 {
 191         return 0;
 192 }
 193
 194 int VEdit::dump_derived()
 195 {
 196         printf("        VEdit::dump_derived\n");
 197         printf("                startproject %jd\n", startproject);
 198         printf("                length %jd\n", length);
 199         return 0;
 200 }
 201
 202 int64_t VEdit::get_source_end(int64_t default_)
 203 {
 204         if(!nested_edl && !asset) return default_;   // Infinity
 205
 206         if(nested_edl)
 207         {
 208                 return (int64_t)(nested_edl->tracks->total_playable_length() *
 209                         edl->session->frame_rate + 0.5);
 210         }
 211
 212         return (int64_t)((double)asset->video_length /
 213                 asset->frame_rate *
 214                 edl->session->frame_rate + 0.5);
 215 }