144 lines
3.9 KiB
C
144 lines
3.9 KiB
C
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#include "Audio_Track.H"
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static
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void
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deurlify ( char *url )
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{
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char *r, *w;
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r = w = url;
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for ( ; *r; r++, w++ )
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{
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if ( *r == '%' )
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{
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char data[3] = { *(r + 1), *(r + 2), 0 };
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int c;
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sscanf( data, "%2X", &c );
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*w = c;
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r += 2;
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}
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else
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*w = *r;
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}
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*w = NULL;
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}
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/** event handler that supports DND of audio clips */
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int
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Audio_Track::handle ( int m )
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{
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switch ( m )
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{
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case FL_DND_DRAG:
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return Track::handle( m ) | 1;
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/* case FL_DND_ENTER: */
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/* case FL_DND_LEAVE: */
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case FL_DND_RELEASE:
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return 1;
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case FL_PASTE:
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{
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const char *text = Fl::event_text();
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if ( ! strcmp( text, "Region" ) )
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return 1;
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char *file;
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if ( ! sscanf( text, "file://%a[^\r\n]\n", &file ) )
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{
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printf( "invalid drop \"%s\"\n", text );
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return 0;
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}
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deurlify( file );
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printf( "pasted file \"%s\"\n", file );
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fl_cursor( FL_CURSOR_WAIT );
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Fl::check();
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Audio_File *c = Audio_File::from_file( file );
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fl_cursor( FL_CURSOR_DEFAULT );
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if ( ! c )
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{
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printf( "could not open file\n" );
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free( file );
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return 0;
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}
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Region *r = new Region( c, this, timeline->xoffset + timeline->x_to_ts( Fl::event_x() - x() ) );
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redraw();
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return 1;
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}
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default:
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return Track::handle( m );
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}
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}
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/**********/
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/* Engine */
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/**********/
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/* THREAD: IO */
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/** determine region coverage and fill /buf/ with interleaved samples
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* from /frame/ to /nframes/ for exactly /channels/ channels. */
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void
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Audio_Track::play ( sample_t *buf, nframes_t frame, nframes_t nframes, int channels )
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{
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sample_t *cbuf = new sample_t[ nframes ];
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/* quick and dirty--let the regions figure out coverage for themselves */
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for ( list <Track_Widget *>::const_iterator i = _widgets.begin(); i != _widgets.end(); i++ )
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{
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const Region *r = (Region*)i;
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for ( int i = channels; i-- )
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{
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memset( cbuf, 0, nframes * sizeof( sample_t ) );
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if ( ! r->read( cbuf, frame, nframes, i ) )
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/* error ? */;
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/* interleave */
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int k = 0;
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for ( int j = 0; j < nframes; j += channels )
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buf[ j ] = cbuf[ k++ ];
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}
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}
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}
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