From: Felix Domke <tmbinc@elitedvb.net>
Date: Thu, 26 Jan 2006 13:26:59 +0000 (+0000)
Subject: fix SG, add user events
X-Git-Url: http://code.vuplus.com/gitweb/?p=vuplus_dvbapp;a=commitdiff_plain;h=6077e08da9e6c94c708b30bcc088dc468f219627

fix SG, add user events
---

diff --git a/lib/base/filepush.cpp b/lib/base/filepush.cpp
index ce33d04..a955e10 100644
--- a/lib/base/filepush.cpp
+++ b/lib/base/filepush.cpp
@@ -21,10 +21,10 @@ static void signal_handler(int x)
 
 void eFilePushThread::thread()
 {
-	off_t dest_pos = 0;
+	off_t dest_pos = 0, source_pos = 0;
 	size_t bytes_read = 0;
 	
-	off_t current_span_offset;
+	off_t current_span_offset = 0;
 	size_t current_span_remaining = 0;
 	
 	int already_empty = 0;
@@ -38,6 +38,8 @@ void eFilePushThread::thread()
 	sigaction(SIGUSR1, &act, 0);
 	
 	dest_pos = lseek(m_fd_dest, 0, SEEK_CUR);
+	source_pos = lseek(m_fd_source, 0, SEEK_CUR);
+	
 		/* m_stop must be evaluated after each syscall. */
 	while (!m_stop)
 	{
@@ -51,7 +53,7 @@ void eFilePushThread::thread()
 			{
 				if (errno == -EINTR)
 					continue;
-				eDebug("eFilePushThread *write error* (%m) - not yet handled");
+				break;
 				// ... we would stop the thread
 			}
 
@@ -68,14 +70,17 @@ void eFilePushThread::thread()
 			
 		if (m_sg && !current_span_remaining)
 		{
-			m_sg->getNextSourceSpan(bytes_read, current_span_offset, current_span_remaining);
+			m_sg->getNextSourceSpan(source_pos, bytes_read, current_span_offset, current_span_remaining);
+
+			if (source_pos != current_span_offset)
+				source_pos = lseek(m_fd_source, current_span_offset, SEEK_SET);
 			bytes_read = 0;
 		}
 		
 		size_t maxread = sizeof(m_buffer);
 		
 			/* if we have a source span, don't read past the end */
-		if (m_sg && maxread < current_span_remaining)
+		if (m_sg && maxread > current_span_remaining)
 			maxread = current_span_remaining;
 
 		m_buf_start = 0;
@@ -84,8 +89,6 @@ void eFilePushThread::thread()
 		if (maxread)
 			m_buf_end = read(m_fd_source, m_buffer, maxread);
 
-		bytes_read += m_buf_end;
-
 		if (m_buf_end < 0)
 		{
 			m_buf_end = 0;
@@ -117,7 +120,13 @@ void eFilePushThread::thread()
 #endif
 			break;
 		} else
+		{
+			source_pos += m_buf_end;
+			bytes_read += m_buf_end;
+			if (m_sg)
+				current_span_remaining -= m_buf_end;
 			already_empty = 0;
+		}
 //		printf("FILEPUSH: read %d bytes\n", m_buf_end);
 	}
 	
@@ -166,6 +175,11 @@ void eFilePushThread::enablePVRCommit(int s)
 	m_send_pvr_commit = s;
 }
 
+void eFilePushThread::setScatterGather(iFilePushScatterGather *sg)
+{
+	m_sg = sg;
+}
+
 void eFilePushThread::sendEvent(int evt)
 {
 	m_messagepump.send(evt);
diff --git a/lib/base/filepush.h b/lib/base/filepush.h
index a536df1..f47d8e9 100644
--- a/lib/base/filepush.h
+++ b/lib/base/filepush.h
@@ -9,8 +9,8 @@
 class iFilePushScatterGather
 {
 public:
+	virtual void getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size)=0;
 	virtual ~iFilePushScatterGather() {}
-	virtual void getNextSourceSpan(size_t bytes_read, off_t &start, size_t &size)=0;
 };
 
 class eFilePushThread: public eThread, public Object
@@ -29,11 +29,13 @@ public:
 	void flush();
 	void enablePVRCommit(int);
 	
-	void setSG(iFilePushScatterGather *);
+	void setScatterGather(iFilePushScatterGather *);
 	
-	enum { evtEOF, evtReadError, evtWriteError };
+	enum { evtEOF, evtReadError, evtWriteError, evtUser };
 	Signal1<void,int> m_event;
-	
+
+		/* you can send private events if you want */
+	void sendEvent(int evt);
 private:
 	iFilePushScatterGather *m_sg;
 	int m_stop;
@@ -44,7 +46,6 @@ private:
 	
 	eFixedMessagePump<int> m_messagepump;
 	
-	void sendEvent(int evt);
 	void recvEvent(const int &evt);
 };