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libtriple: use AVS mute to avoid audio pop during boot

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Origin commit data
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Branch: master
Commit: 9d7c877b7c
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2012-01-22 (Sun, 22 Jan 2012)


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No further description and justification available within origin commit message!

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This commit was generated by Migit
This commit is contained in:
Stefan Seyfried
2012-01-22 13:18:31 +01:00
parent 098eba57f0
commit 6014ab0be2
3 changed files with 19 additions and 1 deletions
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12
libtriple/audio_td.cpp
View File

@@ -6,6 +6,7 @@
#include <hardware/tddevices.h>
#include <avs/avs_inf.h>
#define AUDIO_DEVICE "/dev/" DEVICE_NAME_AUDIO
#include "audio_td.h"
#include "lt_debug.h"
@@ -37,6 +38,7 @@ void cAudio::openDevice(void)
if ((fd = open(AUDIO_DEVICE, O_RDWR)) < 0)
lt_info("openDevice: open failed (%m)\n");
fcntl(fd, F_SETFD, FD_CLOEXEC);
do_mute(true, false);
}
else
lt_info("openDevice: already open (fd = %d)\n", fd);
@@ -58,6 +60,7 @@ void cAudio::closeDevice(void)
int cAudio::do_mute(bool enable, bool remember)
{
lt_debug("%s(%d, %d)\n", __FUNCTION__, enable, remember);
int avsfd;
int ret;
if (remember)
Muted = enable;
@@ -69,6 +72,15 @@ int cAudio::do_mute(bool enable, bool remember)
if (clipfd != -1 || mixer_fd != -1)
setVolume(volume,volume); /* considers "Muted" variable, "remember"
is basically always true in this context */
avsfd = open("/dev/stb/tdsystem", O_RDONLY);
if (avsfd >= 0)
{
if (enable)
ioctl(avsfd, IOC_AVS_SET_VOLUME, 31);
else
ioctl(avsfd, IOC_AVS_SET_VOLUME, 0);
close(avsfd);
}
return ret;
}

4
libtriple/init_td.cpp
View File

@@ -17,6 +17,7 @@ extern "C" {
#include <hardware/avs/bios_system_config.h>
}
#include "lt_dfbinput.h"
#include "pwrmngr.h"
#include "lt_debug.h"
#define lt_debug(args...) _lt_debug(TRIPLE_DEBUG_INIT, NULL, args)
@@ -125,6 +126,9 @@ void init_td_api()
lt_info("%s begin, initialized=%d, debug=0x%02x\n", __FUNCTION__, (int)initialized, debuglevel);
if (!initialized)
{
/* leave standby early, this avoids popping noise on audio device */
cCpuFreqManager f;
f.SetCpuFreq(0); /* CPUFREQ == 0 is the trigger for leaving standby */
/* DirectFB does setpgid(0,0), which disconnects us from controlling terminal
and thus disables e.g. ctrl-C. work around that. */
pid_t pid = getpgid(0);

4
libtriple/pwrmngr.cpp
View File

@@ -58,8 +58,10 @@ bool cCpuFreqManager::SetCpuFreq(unsigned long f)
}
else
{
ioctl(fd, IOC_AVS_SET_VOLUME, 31); /* mute AVS to avoid ugly noise */
ioctl(fd, IOC_AVS_STANDBY_LEAVE);
ioctl(fd, IOC_AVS_SET_VOLUME, 0); /* max gain */
/* unmute will be done by cAudio::do_mute(). Ugly, but prevents pops */
// ioctl(fd, IOC_AVS_SET_VOLUME, 0); /* max gain */
}
close(fd);