Added my "Copyright (c) 2007" notices, for files I edited in 2007.

[synfig.git] / synfig-core / trunk / src / modules / mod_ffmpeg / trgt_ffmpeg.cpp

diff --git a/synfig-core/trunk/src/modules/mod_ffmpeg/trgt_ffmpeg.cpp b/synfig-core/trunk/src/modules/mod_ffmpeg/trgt_ffmpeg.cpp
index cf82354..acda8ff 100644 (file)
--- a/synfig-core/trunk/src/modules/mod_ffmpeg/trgt_ffmpeg.cpp
+++ b/synfig-core/trunk/src/modules/mod_ffmpeg/trgt_ffmpeg.cpp
@@ -6,6 +6,7 @@
 **
 **     \legal
 **     Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**     Copyright (c) 2007 Chris Moore
 **
 **     This package is free software; you can redistribute it and/or
 **     modify it under the terms of the GNU General Public License as
@@ -36,6 +37,20 @@
 #include <ETL/stringf>
 #include "trgt_ffmpeg.h"
 #include <stdio.h>
+#include <sys/types.h>
+#if HAVE_SYS_WAIT_H
+ #include <sys/wait.h>
+#endif
+#if HAVE_IO_H
+ #include <io.h>
+#endif
+#if HAVE_PROCESS_H
+ #include <process.h>
+#endif
+#if HAVE_FCNTL_H
+ #include <fcntl.h>
+#endif
+#include <unistd.h>
 #include <algorithm>
 #include <functional>
 #include <ETL/clock>
@@ -48,6 +63,12 @@ using namespace synfig;
 using namespace std;
 using namespace etl;
 
+#if defined(HAVE_FORK) && defined(HAVE_PIPE) && defined(HAVE_WAITPID)
+ #define UNIX_PIPE_TO_PROCESSES
+#else
+ #define WIN32_PIPE_TO_PROCESSES
+#endif
+
 /* === G L O B A L S ======================================================= */
 
 SYNFIG_TARGET_INIT(ffmpeg_trgt);
@@ -60,6 +81,7 @@ SYNFIG_TARGET_SET_CVS_ID(ffmpeg_trgt,"$Id$");
 
 ffmpeg_trgt::ffmpeg_trgt(const char *Filename)
 {
+       pid=-1;
        file=NULL;
        filename=Filename;
        multi_image=false;
@@ -74,7 +96,13 @@ ffmpeg_trgt::~ffmpeg_trgt()
        {
                etl::yield();
                sleep(1);
+#if defined(WIN32_PIPE_TO_PROCESSES)
                pclose(file);
+#elif defined(UNIX_PIPE_TO_PROCESSES)
+               fclose(file);
+               int status;
+               waitpid(pid,&status,0);
+#endif
        }
        file=NULL;
        delete [] buffer;
@@ -124,11 +152,63 @@ ffmpeg_trgt::init()
        imagecount=desc.get_frame_start();
        if(desc.get_frame_end()-desc.get_frame_start()>0)
                multi_image=true;
+
+#if defined(WIN32_PIPE_TO_PROCESSES)
+
        string command;
 
-       command=strprintf("ffmpeg -f image2pipe -vcodec ppm -an -r %f -i pipe: -loop -hq -title \"%s\" -vcodec mpeg1video -y \"%s\"\n",desc.get_frame_rate(),get_canvas()->get_name().c_str(),filename.c_str());
+       if( filename.c_str()[0] == '-' )
+                       command=strprintf("ffmpeg -f image2pipe -vcodec ppm -an -r %f -i pipe: -loop -hq -title \"%s\" -vcodec mpeg1video -y -- \"%s\"\n",desc.get_frame_rate(),get_canvas()->get_name().c_str(),filename.c_str());
+       else
+                       command=strprintf("ffmpeg -f image2pipe -vcodec ppm -an -r %f -i pipe: -loop -hq -title \"%s\" -vcodec mpeg1video -y \"%s\"\n",desc.get_frame_rate(),get_canvas()->get_name().c_str(),filename.c_str());
+                               
+       file=popen(command.c_str(),POPEN_BINARY_WRITE_TYPE);
+
+#elif defined(UNIX_PIPE_TO_PROCESSES)
 
-       file=popen(command.c_str(),"w");
+       int p[2];
+  
+       if (pipe(p)) {
+               synfig::error(_("Unable to open pipe to ffmpeg"));
+               return false;
+       };
+  
+       pid = fork();
+  
+       if (pid == -1) {
+               synfig::error(_("Unable to open pipe to ffmpeg"));
+               return false;
+       }
+  
+       if (pid == 0){
+               // Child process
+               // Close pipeout, not needed
+               close(p[1]);
+               // Dup pipeout to stdin
+               if( dup2( p[0], STDIN_FILENO ) == -1 ){
+                       synfig::error(_("Unable to open pipe to ffmpeg"));
+                       return false;
+               }
+               // Close the unneeded pipeout
+               close(p[0]);
+               if( filename.c_str()[0] == '-' )
+                       execlp("ffmpeg", "ffmpeg", "-f", "image2pipe", "-vcodec", "ppm", "-an", "-r", strprintf("%f", desc.get_frame_rate()).c_str(), "-i", "pipe:", "-loop", "-hq", "-title", get_canvas()->get_name().c_str(), "-vcodec", "mpeg1video", "-y", "--", filename.c_str(), (const char *)NULL);
+               else
+                       execlp("ffmpeg", "ffmpeg", "-f", "image2pipe", "-vcodec", "ppm", "-an", "-r", strprintf("%f", desc.get_frame_rate()).c_str(), "-i", "pipe:", "-loop", "-hq", "-title", get_canvas()->get_name().c_str(), "-vcodec", "mpeg1video", "-y", filename.c_str(), (const char *)NULL);
+               // We should never reach here unless the exec failed
+               synfig::error(_("Unable to open pipe to ffmpeg"));
+               return false;
+       } else {
+               // Parent process
+               // Close pipein, not needed
+               close(p[0]);
+               // Save pipeout to file handle, will write to it later
+               file = fdopen(p[1], "wb");
+       }
+
+#else
+       #error There are no known APIs for creating child processes
+#endif
 
        // etl::yield();