added an option for specifying the size of capture buffer

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7906 b3059339-0415-0410-9bf9-f77b7e298cf2

4 files changed, 18 insertions, 10 deletions

diff --git a/cfg-common.h b/cfg-common.h
index 7fe5476194..d961d4e8f0 100644
--- a/cfg-common.h
+++ b/cfg-common.h
@@ -253,6 +253,7 @@ struct config tvopts_conf[]={
 	{"balance", &tv_param_balance, CONF_TYPE_INT, CONF_RANGE, 0, 65535, NULL},
 	{"forcechan", &tv_param_forcechan, CONF_TYPE_INT, CONF_RANGE, 1, 2, NULL},
 	{"forceaudio", &tv_param_force_audio, CONF_TYPE_FLAG, 0, 0, 1, NULL},
+	{"buffersize", &tv_param_buffer_size, CONF_TYPE_INT, CONF_RANGE, 16, 1024, NULL},
 #ifdef HAVE_ALSA9
 	{"alsa", &tv_param_alsa, CONF_TYPE_FLAG, 0, 0, 1, NULL},
 #endif
diff --git a/libmpdemux/tv.c b/libmpdemux/tv.c
index 7ecd6339e9..082bac691f 100644
--- a/libmpdemux/tv.c
+++ b/libmpdemux/tv.c
@@ -60,6 +60,7 @@ int tv_param_treble = -1;
 int tv_param_balance = -1;
 int tv_param_forcechan = -1;
 int tv_param_force_audio = 0;
+int tv_param_buffer_size = -1;
 #ifdef HAVE_ALSA9
 int tv_param_alsa = 0;
 #endif
diff --git a/libmpdemux/tv.h b/libmpdemux/tv.h
index d780f68083..ca399ebb65 100644
--- a/libmpdemux/tv.h
+++ b/libmpdemux/tv.h
@@ -32,6 +32,7 @@ extern int tv_param_treble;
 extern int tv_param_balance;
 extern int tv_param_forcechan;
 extern int tv_param_force_audio;
+extern int tv_param_buffer_size;
 #ifdef HAVE_ALSA9
 extern int tv_param_alsa;
 #endif
diff --git a/libmpdemux/tvi_v4l.c b/libmpdemux/tvi_v4l.c
index 52d7bb4226..bfae762085 100644
--- a/libmpdemux/tvi_v4l.c
+++ b/libmpdemux/tvi_v4l.c
@@ -579,19 +579,24 @@ static int uninit(priv_t *priv)
 static int get_capture_buffer_size(priv_t *priv)
 {
     int bufsize, cnt;
-#ifdef HAVE_SYS_SYSINFO_H
-    struct sysinfo si;
-    
-    sysinfo(&si);
-    if (si.totalram<2*1024*1024) {
-	bufsize = 1024*1024;
+
+    if (tv_param_buffer_size) {
+	bufsize = tv_param_buffer_size*1024*1024;
     } else {
-	bufsize = si.totalram/2;
-    }
+#ifdef HAVE_SYS_SYSINFO_H
+	struct sysinfo si;
+	
+	sysinfo(&si);
+	if (si.totalram<2*1024*1024) {
+	    bufsize = 1024*1024;
+	} else {
+	    bufsize = si.totalram/2;
+	}
 #else
-    bufsize = 16*1024*1024;
+	bufsize = 16*1024*1024;
 #endif
-
+    }
+    
     cnt = bufsize/(priv->height*priv->bytesperline);
     if (cnt < 2) cnt = 2;