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spark: set new videomode only if it differs from current

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This commit is contained in:
Stefan Seyfried
2012-04-01 17:26:56 +02:00
parent 93bc0eec06
commit 72089fe88d
1 changed files with 12 additions and 1 deletions
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13
libspark/video.cpp
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@@ -24,6 +24,7 @@
#include <unistd.h>
#include <utime.h>
#include <errno.h>
#include <ctype.h>
#include <cstring>
#include <cstdio>
@@ -88,6 +89,8 @@ static int proc_get(const char *path, char *value, const int len)
return pfd;
ret = read(pfd, value, len);
value[len-1] = '\0'; /* make sure string is terminated */
while (ret > 0 && isspace(value[ret-1]))
value[--ret] = '\0'; /* remove trailing whitespace */
ret2 = close(pfd);
if (ret2 < 0)
return ret2;
@@ -286,6 +289,7 @@ int cVideo::setBlank(int)
int cVideo::SetVideoSystem(int video_system, bool remember)
{
lt_debug("%s(%d, %d)\n", __func__, video_system, remember);
char current[32];
static const char *modes[] = {
"pal", // VIDEO_STD_NTSC
"pal", // VIDEO_STD_SECAM
@@ -307,6 +311,13 @@ int cVideo::SetVideoSystem(int video_system, bool remember)
lt_info("%s: video_system (%d) > VIDEO_STD_MAX (%d)\n", __func__, video_system, VIDEO_STD_MAX);
return -1;
}
int ret = proc_get("/proc/stb/video/videomode", current, 32);
if (strcmp(current, modes[video_system]) == 0)
{
lt_info("%s: video_system %d (%s) already set, skipping\n", __func__, video_system, current);
return 0;
}
lt_info("%s: old: '%s' new: '%s'\n", __func__, current, modes[video_system]);
bool stopped = false;
if (playstate == VIDEO_PLAYING)
{
@@ -315,7 +326,7 @@ int cVideo::SetVideoSystem(int video_system, bool remember)
stopped = true;
}
hdmi_out(false);
int ret = proc_put("/proc/stb/video/videomode", modes[video_system],strlen(modes[video_system]));
ret = proc_put("/proc/stb/video/videomode", modes[video_system],strlen(modes[video_system]));
hdmi_out(true);
if (stopped)
Start();