adjust scaling of software volume

src/pcm_utils.c

@@ -47,7 +47,7 @@ void pcm_volumeChange(char * buffer, int bufferSize, AudioFormat * format,
 	mpd_sint8 * buffer8 = (mpd_sint8 *)buffer;
 	mpd_sint16 * buffer16 = (mpd_sint16 *)buffer;
 
-	if(volume>=100) return;
+	if(volume>=1000) return;
 	
 	if(volume<=0) {
 		memset(buffer,0,bufferSize);
@@ -59,7 +59,7 @@ void pcm_volumeChange(char * buffer, int bufferSize, AudioFormat * format,
 		while(bufferSize>0) {
 			temp32 = *buffer16;
 			temp32*= volume;
-			temp32/=100;
+			temp32/=1000;
 			*buffer16 = temp32>32767 ? 32767 : 
 					(temp32<-32768 ? -32768 : temp32);
 			buffer16++;
@@ -70,7 +70,7 @@ void pcm_volumeChange(char * buffer, int bufferSize, AudioFormat * format,
 		while(bufferSize>0) {
 			temp32 = *buffer8;
 			temp32*= volume;
-			temp32/=100;
+			temp32/=1000;
 			*buffer8 = temp32>127 ? 127 : 
 					(temp32<-128 ? -128 : temp32);
 			buffer8++;
@@ -96,7 +96,7 @@ void pcm_add(char * buffer1, char * buffer2, size_t bufferSize1,
 	switch(format->bits) {
 	case 16:
 		while(bufferSize1>0 && bufferSize2>0) {
-			temp32 = (vol1*(*buffer16_1)+vol2*(*buffer16_2))/100;
+			temp32 = (vol1*(*buffer16_1)+vol2*(*buffer16_2))/1000;
 			*buffer16_1 = temp32>32767 ? 32767 : 
 					(temp32<-32768 ? -32768 : temp32);
 			buffer16_1++;
@@ -108,7 +108,7 @@ void pcm_add(char * buffer1, char * buffer2, size_t bufferSize1,
 		break;
 	case 8:
 		while(bufferSize1>0 && bufferSize2>0) {
-			temp32 = (vol1*(*buffer8_1)+vol2*(*buffer8_2))/100;
+			temp32 = (vol1*(*buffer8_1)+vol2*(*buffer8_2))/1000;
 			*buffer8_1 = temp32>127 ? 127 : 
 					(temp32<-128 ? -128 : temp32);
 			buffer8_1++;
@@ -131,8 +131,8 @@ void pcm_mix(char * buffer1, char * buffer2, size_t bufferSize1,
 	float s = sin(M_PI_2*portion1);
 	s*=s;
 	
-	vol1 = s*100+0.5;
-	vol1 = vol1>100 ? 100 : ( vol1<0 ? 0 : vol1 );
+	vol1 = s*1000+0.5;
+	vol1 = vol1>1000 ? 1000 : ( vol1<0 ? 0 : vol1 );
 
-	pcm_add(buffer1,buffer2,bufferSize1,bufferSize2,vol1,100-vol1,format);
+	pcm_add(buffer1,buffer2,bufferSize1,bufferSize2,vol1,1000-vol1,format);
 }

src/player.c

@@ -422,7 +422,7 @@ void setPlayerCrossFade(float crossFadeInSeconds) {
 
 void setPlayerSoftwareVolume(int volume) {
 	PlayerControl * pc;
-	volume = (volume>100) ? 100 : (volume<0 ? 0 : volume);
+	volume = (volume>1000) ? 1000 : (volume<0 ? 0 : volume);
 
 	pc = &(getPlayerData()->playerControl);
 

src/player.h

@@ -74,7 +74,7 @@ typedef struct _PlayerControl {
 	mpd_sint8 seek;
 	double seekWhere;
 	float crossFade;
-	mpd_sint8 softwareVolume;
+	mpd_uint16 softwareVolume;
 	double totalPlayTime;
 	int decode_pid;
 } PlayerControl;

src/playerData.c

@@ -111,7 +111,7 @@ void initPlayerData() {
 	memset(playerData_pd->playerControl.file,0,MAXPATHLEN+1);
 	memset(playerData_pd->playerControl.erroredFile,0,MAXPATHLEN+1);
 	playerData_pd->playerControl.crossFade = crossfade;
-	playerData_pd->playerControl.softwareVolume = 100;
+	playerData_pd->playerControl.softwareVolume = 1000;
 	playerData_pd->playerControl.totalPlayTime = 0;
 	playerData_pd->playerControl.decode_pid = 0;
 

src/volume.c

@@ -48,7 +48,7 @@
 int volume_mixerType = VOLUME_MIXER_TYPE_SOFTWARE;
 char * volume_mixerDevice;
 
-int volume_softwareSet = -1;
+int volume_softwareSet = 100;
 
 #ifndef NO_OSS_MIXER
 int volume_ossFd;
@@ -373,11 +373,7 @@ void openVolumeDevice() {
 }
 
 int getSoftwareVolume() {
-	if(volume_softwareSet >= 0) {
-		return volume_softwareSet;
-	}
-
-	return 50*log((getPlayerSoftwareVolume()*(M_E*M_E-1)/100.0)+1)+0.5;
+	return volume_softwareSet;
 }
 
 int getVolumeLevel() {
@@ -400,14 +396,17 @@ int getVolumeLevel() {
 int changeSoftwareVolume(FILE * fp, int change, int rel) {
 	int new = change;
 
-	if(rel) new+=getSoftwareVolume();
+	if(rel) new+=getSoftwareVolume()/10.0+0.5;
 
 	if(new>100) new = 100;
 	else if(new<0) new = 0;
 
 	volume_softwareSet = new;
 
-	new = 100.0*(exp(new/50.0)-1)/(M_E*M_E-1)+0.5;
+	/*new = 100.0*(exp(new/50.0)-1)/(M_E*M_E-1)+0.5;*/
+	if(new>=100) new = 1000;
+	else if(new<=0) new = 0;
+	else new = 1000.0*(exp(new/20.0)-1)/(148.413159103F-1)+0.5;
 
 	setPlayerSoftwareVolume(new);