From d03f3c8feee393b170beebf6ce5d46d2f8dcfcc5 Mon Sep 17 00:00:00 2001
From: martii <you@example.com>
Date: Fri, 13 Jul 2012 16:24:18 +0200
Subject: [PATCH] spark audio: add support for channel specific volume

---
 libspark/audio.cpp   | 40 +++++++++++++++++++++++++++++++++++++++-
 libspark/audio_lib.h |  7 +++++++
 2 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/libspark/audio.cpp b/libspark/audio.cpp
index 74521ba..482b62a 100644
--- a/libspark/audio.cpp
+++ b/libspark/audio.cpp
@@ -37,6 +37,9 @@ cAudio::cAudio(void *, void *, void *)
 	mixer_fd = -1;
 	openDevice();
 	Muted = false;
+#ifdef MARTII
+	percent = 100;
+#endif
 }
 
 cAudio::~cAudio(void)
@@ -108,7 +111,11 @@ int cAudio::setVolume(unsigned int left, unsigned int right)
 	lt_debug("%s(%d, %d)\n", __func__, left, right);
 
 	volume = (left + right) / 2;
+#ifdef MARTII
+	int v = map_volume((volume * percent)/100);
+#else
 	int v = map_volume(volume);
+#endif
 	if (clipfd != -1 && mixer_fd != -1) {
 		int tmp = 0;
 		/* not sure if left / right is correct here, but it is always the same anyways ;-) */
@@ -119,11 +126,13 @@ int cAudio::setVolume(unsigned int left, unsigned int right)
 			lt_info("%s: MIXER_WRITE(%d),%04x: %m\n", __func__, mixer_num, tmp);
 		return ret;
 	}
+#ifndef MARTII
 	/* compensate for different decoding volume of mpeg and ac3 streams
 	 * TODO: check if this is correct for all channels
 	 *       and if we need to do something with DTS?  */
 	if (StreamType == AUDIO_FMT_MPEG)
 		v = map_volume(volume * 30 / 53);
+#endif
 
 	char str[4];
 	sprintf(str, "%d", v);
@@ -144,10 +153,18 @@ int cAudio::Stop(void)
 	return ioctl(fd, AUDIO_STOP);
 }
 
+#ifdef MARTII
+bool cAudio::Pause(bool Pcm)
+{
+	ioctl(fd, Pcm ? AUDIO_PAUSE : AUDIO_CONTINUE, 1);
+	return true;
+}
+#else
 bool cAudio::Pause(bool /*Pcm*/)
 {
 	return true;
 };
+#endif
 
 void cAudio::SetSyncMode(AVSYNC_TYPE Mode)
 {
@@ -167,7 +184,9 @@ void cAudio::SetSyncMode(AVSYNC_TYPE Mode)
 void cAudio::SetStreamType(AUDIO_FORMAT type)
 {
 	int bypass = AUDIO_STREAMTYPE_MPEG;
+#ifndef MARTII
 	bool update_volume = (StreamType != type);
+#endif
 	lt_debug("%s %d\n", __FUNCTION__, type);
 	StreamType = type;
 
@@ -175,7 +194,7 @@ void cAudio::SetStreamType(AUDIO_FORMAT type)
 	{
 		case AUDIO_FMT_DOLBY_DIGITAL:
 			bypass = AUDIO_STREAMTYPE_AC3;
-			break;
+ 			break;
 		case AUDIO_FMT_DTS:
 			bypass = AUDIO_STREAMTYPE_DTS;
 			break;
@@ -188,8 +207,10 @@ void cAudio::SetStreamType(AUDIO_FORMAT type)
 	// But as we implemented the behavior to bypass (cause of e2) this is correct here
 	if (ioctl(fd, AUDIO_SET_BYPASS_MODE, bypass) < 0)
 		lt_info("%s: AUDIO_SET_BYPASS_MODE failed (%m)\n", __func__);
+#ifndef MARTII
 	if (update_volume)
 		setVolume(volume, volume);
+#endif
 };
 
 int cAudio::setChannel(int channel)
@@ -411,3 +432,20 @@ void cAudio::setBypassMode(bool disable)
 	lt_debug("%s %d\n", __func__, disable);
 	proc_put("/proc/stb/audio/ac3", opt[disable], strlen(opt[disable]));
 }
+
+#ifdef MARTII
+int cAudio::getPercent(void) {
+	return percent;
+}
+
+int cAudio::setPercent(int perc) {
+	lt_debug("%s %d (muted: %d)\n", __func__, perc, Muted);
+	int old_percent = percent;
+	percent = perc;
+	if (percent < 0 || percent > 999)
+		percent = 100;
+	if(!Muted)
+		setVolume(volume, volume);
+	return old_percent;
+}
+#endif
diff --git a/libspark/audio_lib.h b/libspark/audio_lib.h
index 74dce1a..69d69c0 100644
--- a/libspark/audio_lib.h
+++ b/libspark/audio_lib.h
@@ -56,6 +56,9 @@ class cAudio
 
 		int do_mute(bool enable, bool remember);
 		void setBypassMode(bool disable);
+#ifdef MARTII
+		int percent;
+#endif
 	public:
 		/* construct & destruct */
 		cAudio(void *, void *, void *);
@@ -91,6 +94,10 @@ class cAudio
 		void SetSpdifDD(bool enable);
 		void ScheduleMute(bool On);
 		void EnableAnalogOut(bool enable);
+#ifdef MARTII
+		int getPercent(void);
+		int setPercent(int perc);
+#endif
 };
 
 #endif