From 656aef8328076a898fb7779fafcf6ca126786b5b Mon Sep 17 00:00:00 2001
From: martii <m4rtii@gmx.de>
Date: Sun, 29 Jun 2014 13:00:18 +0200
Subject: [PATCH] libspark/audio: add mixer access methods

---
 libspark/audio.cpp   | 64 ++++++++++++++++++++++++++++++++++++++++++++
 libspark/audio_lib.h | 13 ++++++++-
 2 files changed, 76 insertions(+), 1 deletion(-)

diff --git a/libspark/audio.cpp b/libspark/audio.cpp
index c9aefb8..7a55814 100644
--- a/libspark/audio.cpp
+++ b/libspark/audio.cpp
@@ -1,12 +1,14 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
+#include <algorithm>
 #include <sys/fcntl.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
 
 #include <linux/dvb/audio.h>
 #include "audio_lib.h"
+#include "audio_mixer.h"
 #include "lt_debug.h"
 
 #define AUDIO_DEVICE	"/dev/dvb/adapter0/audio0"
@@ -35,17 +37,25 @@ cAudio::cAudio(void *, void *, void *)
 	fd = -1;
 	clipfd = -1;
 	mixer_fd = -1;
+
+	mixerAnalog = mixerHDMI = mixerSPDIF = NULL;
+	volumeAnalog = volumeHDMI = volumeSPDIF = 0;
+	mixersMuted = false;
+
 	openDevice();
 	Muted = false;
 }
 
 cAudio::~cAudio(void)
 {
+	closeMixers();
 	closeDevice();
 }
 
 void cAudio::openDevice(void)
 {
+	openMixers();
+
 	if (fd < 0)
 	{
 		if ((fd = open(AUDIO_DEVICE, O_RDWR)) < 0)
@@ -59,6 +69,8 @@ void cAudio::openDevice(void)
 
 void cAudio::closeDevice(void)
 {
+	closeMixers();
+
 	if (fd > -1) {
 		close(fd);
 		fd = -1;
@@ -414,3 +426,55 @@ void cAudio::setBypassMode(bool disable)
 	lt_debug("%s %d\n", __func__, disable);
 	proc_put("/proc/stb/audio/ac3", opt[disable], strlen(opt[disable]));
 }
+
+void cAudio::openMixers(void)
+{
+	if (!mixerAnalog)
+		mixerAnalog = new mixerVolume("Analog", "1");
+	if (!mixerHDMI)
+		mixerHDMI = new mixerVolume("HDMI", "1");
+	if (!mixerSPDIF)
+		mixerSPDIF = new mixerVolume("SPDIF", "1");
+}
+
+void cAudio::closeMixers(void)
+{
+	delete mixerAnalog;
+	delete mixerHDMI;
+	delete mixerSPDIF;
+	mixerAnalog = mixerHDMI = mixerSPDIF = NULL;
+}
+
+void cAudio::setMixerVolume(const char *name, long value, bool remember)
+{
+	if (!strcmp(name, "Analog")) {
+		mixerAnalog->setVolume(value);
+		if (remember)
+			volumeAnalog = value;
+	}
+	if (!strcmp(name, "HDMI")) {
+		mixerHDMI->setVolume(value);
+		if (remember)
+			volumeHDMI = value;
+	}
+	if (!strcmp(name, "SPDIF")) {
+		mixerSPDIF->setVolume(value);
+		if (remember)
+			volumeSPDIF = value;
+	}
+}
+
+void cAudio::muteMixers(bool m)
+{
+	if (m && !mixersMuted) {
+		mixersMuted = true;
+		setMixerVolume("Analog", 0, false);
+		setMixerVolume("HDMI", 0, false);
+		setMixerVolume("SPDIF", 0, false);
+	} else if (!m && mixersMuted) {
+		mixersMuted = false;
+		setMixerVolume("Analog", volumeAnalog, false);
+		setMixerVolume("HDMI", volumeHDMI, false);
+		setMixerVolume("SPDIF", volumeSPDIF, false);
+	}
+}
diff --git a/libspark/audio_lib.h b/libspark/audio_lib.h
index 7e5cb34..fa4c1ba 100644
--- a/libspark/audio_lib.h
+++ b/libspark/audio_lib.h
@@ -35,6 +35,8 @@ typedef enum
    AUDIO_FMT_ADVANCED = AUDIO_FMT_MLP
 } AUDIO_FORMAT;
 
+class mixerVolume;
+
 class cAudio
 {
 	friend class cPlayback;
@@ -57,6 +59,11 @@ class cAudio
 
 		int do_mute(bool enable, bool remember);
 		void setBypassMode(bool disable);
+
+		mixerVolume *mixerAnalog, *mixerHDMI, *mixerSPDIF;
+		int volumeAnalog, volumeHDMI, volumeSPDIF;
+		bool mixersMuted;
+
 	public:
 		/* construct & destruct */
 		cAudio(void *, void *, void *);
@@ -92,7 +99,11 @@ class cAudio
 		void SetSpdifDD(bool enable);
 		void ScheduleMute(bool On);
 		void EnableAnalogOut(bool enable);
+
+		void openMixers(void);
+		void closeMixers(void);
+		void setMixerVolume(const char *name, long value, bool remember = true);
+		void muteMixers(bool m = true);
 };
 
 #endif
-