Linux DVB output for STBs based on Broadcom - replace active pooling by select (ready to write)

Signed-off-by: max_10 <max_10@gmx.de>

libeplayer3-arm/output/writer/mipsel/writer.c

@@ -29,6 +29,7 @@
 
 #include "misc.h"
 #include "writer.h"
+#include "common.h"
 
 /* ***************************** */
 /* Makros/Constants              */
@@ -100,6 +101,69 @@ static Writer_t *AvailableWriter[] =
 /*  Functions                    */
 /* ***************************** */
 
+ssize_t WriteWithRetry(Context_t *context, int pipefd, int fd, const void *buf, size_t size)
+{
+	fd_set rfds;
+	fd_set wfds;
+	
+	ssize_t ret;
+	int retval = -1;
+	int maxFd = pipefd > fd ? pipefd : fd;
+	
+	while(size > 0 && 0 == PlaybackDieNow(0) && !context->playback->isSeeking)
+	{
+		FD_ZERO(&rfds);
+		FD_ZERO(&wfds);
+
+		FD_SET(pipefd, &rfds);
+		FD_SET(fd, &wfds);
+
+		retval = select(maxFd + 1, &rfds, &wfds, NULL, NULL);
+		if (retval < 0)
+		{
+			break;
+		}
+		
+		if(FD_ISSET(pipefd, &rfds))
+		{
+			char tmp;
+			/* flush pipefd pipe */
+			while(1 == read(pipefd, &tmp, 1));
+			break;
+		}
+		
+		if(FD_ISSET(fd, &wfds))
+		{
+			ret = write(fd, buf, size);
+			if (ret < 0)
+			{
+				switch(errno)
+				{
+					case EINTR:
+					case EAGAIN:
+						continue;
+					default:
+						retval = -3;
+						break;
+				}
+				if (retval < 0)
+				{
+					break;
+				}
+			}
+				
+			if (ret < 0)
+			{
+				return ret;
+			}
+			
+			size -= ret;
+			buf += ret;
+		}
+	}
+	return 0;
+}
+
 ssize_t write_with_retry(int fd, const void *buf, size_t size)
 {
 	ssize_t ret;