+++ /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
- *
- */
-
-#ifndef BRENDER_H
-#define BRENDER_H
-
-
-
-// The master node of the background renderer needs a separate memory space
-// because few of the codecs are reentrant.
-
-// To solve the problem, the master node forks itself and treats the forked
-// master node as the first node of a renderfarm. There is no real master node
-// of the renderfarm. The BRender object is a thread in order to
-// join the forked master node.
-
-// If renderfarm is enabled, the extra renderfarm nodes are treated normally.
-// Unfortunately because of the codec problem, only one copy of Cinelerra
-// can be running on a single renderfarm. This means either background
-// rendering or foreground rendering can be happening but not both.
-
-// A BRenderThread client runs in the background and a BRender object
-// interfaces the main window. The BRender client recieves commands to
-// restart, start, and stop background rendering on its own time to avoid
-// interrupting the main window.
-
-// Whenever a change happens to the timeline, we calculate the last position
-// which hasn't changed and the end of the contiguous renderfarm output.
-// Then we restart the background renderfarm at the
-// lesser of the positions. You can't conditionally restart only
-// if one of the current jobs was after the position because you need a new EDL.
-
-// The two problems to emerge are which job is the last job in the contiguous
-// set of finished jobs and if position of change is before the last job,
-// how to truncate and restart the output file.
-
-// It's easy to use image sequences as the output file to solve the
-// file truncation problem.
-// Figuring out the end of the contiguous output means recording the
-// state of every output file and constructing a kind of EDL for the
-// background output as certain output files cluster together.
-// This is needed anyway for playback.
-
-#include "arraylist.h"
-#include "bcwindowbase.inc"
-#include "brender.inc"
-#include "condition.inc"
-#include "edl.inc"
-#include "mutex.inc"
-#include "mwindow.inc"
-#include "packagedispatcher.inc"
-#include "preferences.inc"
-#include "renderfarm.inc"
-#include "thread.h"
-#include "bctimer.inc"
-
-
-
-
-
-
-
-class BRender : public Thread
-{
-public:
- BRender(MWindow *mwindow);
- ~BRender();
-
-// Give the last position of the EDL which hasn't changed.
-// We copy the EDL and restart rendering at the lesser of position and
-// our position.
- void restart(EDL *edl);
-// Stop background rendering for a foreground render. This blocks until
-// it really stops.
- void stop();
-
-
-// Get last contiguous frame from map, with locking.
-// Only needed by BRenderThread::start but nothing really uses it.
- int get_last_contiguous(int64_t brender_start);
-// Allocate map with locking
- void allocate_map(int64_t brender_start, int64_t start, int64_t end);
-// Mark a frame as finished
- int set_video_map(int64_t position, int value);
-
- void initialize();
- void run();
-
-
-
- MWindow *mwindow;
-
-
-
-
-// Simple map of finished chunks
- unsigned char *map;
- int64_t map_size;
- Mutex *map_lock;
-
-// Status of each map entry. This way we get the last contiguous as well as the
-// ones which are actually rendered.
- enum
- {
- NOT_SCANNED,
- SCANNED,
- RENDERED
- };
-
-// Invalidate the map until reallocation when a new edit operation is performed.
- int map_valid;
-
-// Constantly recalculate this after every frame instead of searching
- int last_contiguous;
-
-// Wait until stop commands are finished
- Condition *completion_lock;
- BRenderThread *thread;
-// PID of master node for killing.
- int master_pid;
-// Path of socket
- char socket_path[BCTEXTLEN];
-// Arguments for execvp
- char *arguments[4];
- Timer *timer;
-};
-
-class BRenderCommand
-{
-public:
- BRenderCommand();
- ~BRenderCommand();
-
-// Transfers EDL pointer but doesn't create a new EDL.
- void copy_from(BRenderCommand *command);
-// Make new EDL
- void copy_edl(EDL *edl);
-
- EDL *edl;
- enum
- {
- BRENDER_NONE,
- BRENDER_RESTART,
- BRENDER_STOP
- };
- int command;
-// The location of the last change.
- double position;
-// The earliest point to include in background rendering would be stored in the
-// EDL.
-};
-
-class BRenderThread : public Thread
-{
-public:
- BRenderThread(MWindow *mwindow, BRender *brender);
- ~BRenderThread();
-
- int is_done(int do_lock);
- void send_command(BRenderCommand *command);
- void run();
- void stop();
- void start();
- void initialize();
-
- MWindow *mwindow;
- BRender *brender;
- BRenderCommand *command_queue;
- BRenderCommand *command;
- Condition *input_lock;
- Mutex *thread_lock;
-// Render farm server. Deleted when stopped. Created when restarted.
- RenderFarmServer *farm_server;
- PackageDispatcher *packages;
-// Copy of preferences with modified render farm.
- Preferences *preferences;
-// Render farm polls these.
- int farm_result;
- double fps_result;
-// Not used
- int64_t total_frames;
- Mutex *total_frames_lock;
- int done;
-};
-
-
-
-
-
-
-
-#endif
projects / goodguy / history.git / blobdiff