Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / cinelerra / filedb.C

diff --git a/cinelerra-5.1/cinelerra/filedb.C b/cinelerra-5.1/cinelerra/filedb.C
new file mode 100644 (file)
index 0000000..b8c2062
--- /dev/null
+++ b/cinelerra-5.1/cinelerra/filedb.C
@@ -0,0 +1,186 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#include "asset.h"
+#include "filebase.h"
+#include "file.h"
+#include "filedb.h"
+#include "mediadb.h"
+#include "mwindow.h"
+#include "preferences.h"
+#include "vframe.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+
+FileDB::FileDB(Asset *asset, File *file)
+ : FileBase(asset, file)
+{
+       reset_parameters();
+       mdb = new MediaDb();
+       if(asset->format == FILE_UNKNOWN)
+               asset->format = FILE_DB;
+       clip_id = -1;
+       swidth = (SWIDTH+1) & ~1;
+       sheight = (SHEIGHT+1) & ~1;
+       frame_id = clip_size = -1;
+       seq_no = 0;
+       prefix_size = suffix_offset = -1;
+       framerate = -1;
+       vframe = 0;
+}
+
+FileDB::~FileDB()
+{
+       close_file();
+       delete mdb;
+}
+
+int FileDB::check_sig(Asset *asset)
+{
+       return !strncmp(asset->path,"/db:",4);
+}
+
+int FileDB::open_file(int rd, int wr)
+{
+       int result = 0;
+       if( mdb->openDb() ) return 1;
+       mdb->detachDb();
+
+       if(rd) {
+               char *cp = 0;
+               clip_id = strtol(asset->path+4,&cp,0);
+               if( !cp || cp == asset->path+4 || *cp != 0 ) result = 1;
+               if( !result ) result = mdb->clip_id(clip_id);
+               if( !result ) {
+                       framerate = mdb->clip_framerate();
+                       clip_size = mdb->clip_size();
+                       prefix_size = mdb->clip_prefix_size();
+                       suffix_offset = mdb->clip_frames() - clip_size;
+                       asset->audio_data = 0;
+                       asset->video_data = 1;
+                       asset->actual_width = swidth;
+                       asset->actual_height = sheight;
+                       if( !asset->layers ) asset->layers = 1;
+                       if( !asset->width ) asset->width = asset->actual_width;
+                       if( !asset->height ) asset->height = asset->actual_height;
+                       if( !asset->video_length ) asset->video_length = clip_size;
+                       if( !asset->frame_rate ) asset->frame_rate = framerate;
+               }
+       }
+
+       if(!result && wr ) {
+               result = 1;
+       }
+
+       if( result ) {
+               mdb->closeDb();
+       }
+       return result;
+}
+
+int FileDB::close_file()
+{
+       reset_parameters();
+       FileBase::close_file();
+       mdb->closeDb();
+       delete vframe;
+       vframe = 0;
+       return 0;
+}
+
+int FileDB::get_best_colormodel(Asset *asset, int driver)
+{
+       return BC_YUV420P;
+}
+
+int FileDB::colormodel_supported(int colormodel)
+{
+       return colormodel;
+}
+
+
+int FileDB::set_video_position(int64_t pos)
+{
+       if( pos < 0 || pos >= asset->video_length )
+               return 1;
+       seq_no = pos;
+       return 0;
+}
+
+int64_t FileDB::get_memory_usage()
+{
+       return 0;
+}
+
+
+
+int FileDB::write_frames(VFrame ***frames, int len)
+{
+       int result = 0;
+       return result;
+}
+
+
+int FileDB::read_frame(VFrame *frame)
+{
+       int sw, sh;
+       mdb->attachDb();
+       int result = seq_no < clip_size ? 0 : 1;
+       if( !result ) {
+               int n = seq_no++;
+               if( !n ) { frame_id = -1; }
+               else if( n >= prefix_size ) n += suffix_offset;
+               result = mdb->get_sequences(clip_id, n);
+               if( !result && mdb->timeline_sequence_no() == n )
+                       frame_id = mdb->timeline_frame_id();
+       }
+       VFrame *fp = frame->get_w() == swidth && frame->get_h() == sheight &&
+                       frame->get_color_model() == BC_YUV420P ? frame :
+               !vframe ? (vframe = new VFrame(swidth,sheight,BC_YUV420P)) :
+               vframe;
+       if( !result ) {
+               if( frame_id < 0 )
+                       memset(fp->get_y(), 0, swidth*sheight);
+               else
+                       result = mdb->get_image(frame_id, fp->get_y(), sw,sh);
+       }
+//printf("seq_no=%d, result=%d\n",seq_no,result);
+       mdb->detachDb();
+       if( !result ) {
+               memset(fp->get_u(),0x80,swidth/2 * sheight/2);
+               memset(fp->get_v(),0x80,swidth/2 * sheight/2);
+       }
+       if( !result && fp == vframe ) {
+               BC_CModels::transfer(frame->get_rows(), fp->get_rows(),
+                       frame->get_y(), frame->get_u(), frame->get_v(),
+                       fp->get_y(), fp->get_u(), fp->get_v(),
+                       0, 0, fp->get_w(), fp->get_h(),
+                       0, 0, frame->get_w(), frame->get_h(),
+                       fp->get_color_model(), frame->get_color_model(), 0,
+                       fp->get_bytes_per_line(), swidth);
+       }
+       return result;
+}
+
+