--- /dev/null
+
+/*
+ * 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 "bcdisplayinfo.h"
+#include "clip.h"
+#include "bchash.h"
+#include "filexml.h"
+#include "guicast.h"
+#include "language.h"
+#include "pluginaclient.h"
+#include "samples.h"
+#include "transportque.h"
+
+#include <string.h>
+
+class LoopAudio;
+
+class LoopAudioConfig
+{
+public:
+ LoopAudioConfig();
+ int64_t samples;
+};
+
+
+class LoopAudioSamples : public BC_TextBox
+{
+public:
+ LoopAudioSamples(LoopAudio *plugin,
+ int x,
+ int y);
+ int handle_event();
+ LoopAudio *plugin;
+};
+
+class LoopAudioWindow : public PluginClientWindow
+{
+public:
+ LoopAudioWindow(LoopAudio *plugin);
+ ~LoopAudioWindow();
+ void create_objects();
+ LoopAudio *plugin;
+ LoopAudioSamples *samples;
+};
+
+
+
+class LoopAudio : public PluginAClient
+{
+public:
+ LoopAudio(PluginServer *server);
+ ~LoopAudio();
+
+ PLUGIN_CLASS_MEMBERS(LoopAudioConfig)
+
+ void save_data(KeyFrame *keyframe);
+ void read_data(KeyFrame *keyframe);
+ void update_gui();
+ int is_realtime();
+ int is_synthesis();
+ int process_buffer(int64_t size,
+ Samples *buffer,
+ int64_t start_position,
+ int sample_rate);
+};
+
+
+
+
+
+
+
+REGISTER_PLUGIN(LoopAudio);
+
+
+
+LoopAudioConfig::LoopAudioConfig()
+{
+ samples = 48000;
+}
+
+
+
+
+
+LoopAudioWindow::LoopAudioWindow(LoopAudio *plugin)
+ : PluginClientWindow(plugin,
+ 210,
+ 160,
+ 200,
+ 160,
+ 0)
+{
+ this->plugin = plugin;
+}
+
+LoopAudioWindow::~LoopAudioWindow()
+{
+}
+
+void LoopAudioWindow::create_objects()
+{
+ int x = 10, y = 10;
+
+ add_subwindow(new BC_Title(x, y, _("Samples to loop:")));
+ y += 20;
+ add_subwindow(samples = new LoopAudioSamples(plugin,
+ x,
+ y));
+ show_window();
+ flush();
+}
+
+
+
+
+
+
+
+
+
+LoopAudioSamples::LoopAudioSamples(LoopAudio *plugin,
+ int x,
+ int y)
+ : BC_TextBox(x,
+ y,
+ 100,
+ 1,
+ plugin->config.samples)
+{
+ this->plugin = plugin;
+ set_precision(2);
+}
+
+int LoopAudioSamples::handle_event()
+{
+ plugin->config.samples = atol(get_text());
+ plugin->config.samples = MAX(1, plugin->config.samples);
+ plugin->send_configure_change();
+ return 1;
+}
+
+
+
+
+
+
+
+
+
+LoopAudio::LoopAudio(PluginServer *server)
+ : PluginAClient(server)
+{
+
+}
+
+
+LoopAudio::~LoopAudio()
+{
+
+}
+
+const char* LoopAudio::plugin_title() { return _("Loop audio"); }
+int LoopAudio::is_realtime() { return 1; }
+int LoopAudio::is_synthesis() { return 1; }
+
+
+
+NEW_WINDOW_MACRO(LoopAudio, LoopAudioWindow)
+
+
+int LoopAudio::process_buffer(int64_t size,
+ Samples *buffer,
+ int64_t start_position,
+ int sample_rate)
+{
+ int64_t current_position = start_position;
+ int step = (get_direction() == PLAY_FORWARD) ? 1 : -1;
+ int fragment_size;
+ int64_t current_loop_end;
+
+//printf("LoopAudio::process_buffer 1 %lld %d\n", start_position, size);
+
+ current_position = start_position;
+
+ for(int i = 0; i < size; i += fragment_size)
+ {
+// Truncate to end of buffer
+ fragment_size = MIN(size - i, size);
+
+ int64_t current_loop_position;
+
+// Truncate to next keyframe
+ if(get_direction() == PLAY_FORWARD)
+ {
+ KeyFrame *next_keyframe = get_next_keyframe(current_position);
+ int64_t next_position = edl_to_local(next_keyframe->position);
+ if(next_position > current_position)
+ fragment_size = MIN(fragment_size, next_position - current_position);
+
+// Get start of current loop
+ KeyFrame *prev_keyframe = get_prev_keyframe(current_position);
+ int64_t prev_position = edl_to_local(prev_keyframe->position);
+ if(prev_position == 0)
+ prev_position = get_source_start();
+ read_data(prev_keyframe);
+
+// Get start of fragment in current loop
+ current_loop_position = prev_position +
+ ((current_position - prev_position) %
+ config.samples);
+ while(current_loop_position < prev_position) current_loop_position += config.samples;
+ while(current_loop_position >= prev_position + config.samples) current_loop_position -= config.samples;
+
+// Truncate fragment to end of loop
+ current_loop_end = current_position -
+ current_loop_position +
+ prev_position +
+ config.samples;
+ fragment_size = MIN(current_loop_end - current_position,
+ fragment_size);
+ }
+ else
+ {
+ KeyFrame *next_keyframe = get_prev_keyframe(current_position);
+ int64_t next_position = edl_to_local(next_keyframe->position);
+ if(next_position < current_position)
+ fragment_size = MIN(fragment_size, current_position - next_position);
+
+ KeyFrame *prev_keyframe = get_next_keyframe(current_position);
+ int64_t prev_position = edl_to_local(prev_keyframe->position);
+ if(prev_position == 0)
+ prev_position = get_source_start() + get_total_len();
+ read_data(prev_keyframe);
+
+ current_loop_position = prev_position -
+ ((prev_position - current_position) %
+ config.samples);
+ while(current_loop_position <= prev_position - config.samples) current_loop_position += config.samples;
+ while(current_loop_position > prev_position) current_loop_position -= config.samples;
+
+// Truncate fragment to end of loop
+ current_loop_end = current_position +
+ prev_position -
+ current_loop_position -
+ config.samples;
+ fragment_size = MIN(current_position - current_loop_end,
+ fragment_size);
+ }
+
+
+// printf("LoopAudio::process_buffer 100 %lld %lld %lld %d\n",
+// current_position, current_loop_position, current_loop_end, fragment_size);
+ int offset = buffer->get_offset();
+ buffer->set_offset(offset + i);
+ read_samples(buffer,
+ 0,
+ sample_rate,
+ current_loop_position,
+ fragment_size);
+ buffer->set_offset(offset);
+
+
+ current_position += step * fragment_size;
+ }
+
+
+ return 0;
+}
+
+
+
+
+int LoopAudio::load_configuration()
+{
+ KeyFrame *prev_keyframe;
+ int64_t old_samples = config.samples;
+ prev_keyframe = get_prev_keyframe(get_source_position());
+ read_data(prev_keyframe);
+ return old_samples != config.samples;
+}
+
+
+void LoopAudio::save_data(KeyFrame *keyframe)
+{
+ FileXML output;
+
+// cause data to be stored directly in text
+ output.set_shared_output(keyframe->get_data(), MESSAGESIZE);
+ output.tag.set_title("LOOPAUDIO");
+ output.tag.set_property("SAMPLES", config.samples);
+ output.append_tag();
+ output.tag.set_title("/LOOPAUDIO");
+ output.append_tag();
+ output.append_newline();
+ output.terminate_string();
+}
+
+void LoopAudio::read_data(KeyFrame *keyframe)
+{
+ FileXML input;
+
+ input.set_shared_input(keyframe->get_data(), strlen(keyframe->get_data()));
+
+ while(!input.read_tag())
+ {
+ if(input.tag.title_is("LOOPAUDIO"))
+ {
+ config.samples = input.tag.get_property("SAMPLES", config.samples);
+ }
+ }
+}
+
+void LoopAudio::update_gui()
+{
+ if(thread)
+ {
+ load_configuration();
+ thread->window->lock_window();
+ ((LoopAudioWindow*)thread->window)->samples->update(config.samples);
+ thread->window->unlock_window();
+ }
+}
+
+
+
+
+
projects / goodguy / history.git / blobdiff