Skip to content

adding the capability to set speakers for atmos layout #68

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
+183 −3
Open

adding the capability to set speakers for atmos layout #68

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
177 changes: 174 additions & 3 deletions audio_switch.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -31,16 +31,27 @@ OTHER DEALINGS IN THE SOFTWARE.


void showUsage(const char * appName) {
printf("Usage: %s [-a] [-c] [-t type] [-n] -s device_name | -i device_id | -u device_uid\n"
printf("Usage: %s [-a] [-c] [-t type] [-n] [-m] [-l] -s device_name | -i device_id | -u device_uid\n"
" -a : shows all devices\n"
" -c : shows current device\n\n"
" -f format : output format (cli/human/json). Defaults to human.\n"
" -t type : device type (input/output/system/all). Defaults to output.\n"
" -l : sets the speaker layout (5_1_4/7_1_2/9_1_6). For output only.\n"
" -p : comma delimited list of channel values starting with 0. For output only.\n"
" -m mute : sets the mute status (mute/unmute/toggle). For input/output only.\n"
" -n : cycles the audio device to the next one\n"
" -i device_id : sets the audio device to the given device by id\n"
" -u device_uid : sets the audio device to the given device by uid or a substring of the uid\n"
" -s device_name : sets the audio device to the given device by name\n\n",appName);
" -s device_name : sets the audio device to the given device by name\n"
"\n"
"5.1.4 Atmos L R C LFE Ls Rs Vhl Vhr Ltr Rtr\n"
"7.1.2 Atmos L R C LFE Ls Rs Rls Rrs Ltm Rtm\n"
"9.1.6 Atmos L R C LFE Ls Rs Rls Rrs Lw Rw Vhl Vhr Ltm Rtm Ltr Rtr\n"
"\n"
"Examples\n"
"./AudioSwitcher -l 5_1_4 -p 0,1,5,4,2,3,6,7,8,9 -t output\n"
"\n"
,appName);
}

int runAudioSwitch(int argc, const char * argv[]) {
Expand All @@ -52,11 +63,16 @@ int runAudioSwitch(int argc, const char * argv[]) {
ASDeviceType typeRequested = kAudioTypeUnknown;
ASOutputType outputRequested = kFormatHuman;
ASMuteType muteRequested = kToggleMute;
ASLayoutType layoutRequested = kL5_1_4;
int function = 0;
int result = 0;
const char s[2] = ",";
char *token;
int channelNumber[16] = {0, 1, 2, 3, 4, 5 ,6 ,7, 8, 9, 10, 11, 12, 13, 14, 15};
int i;

int c;
while ((c = getopt(argc, (char **)argv, "hacm:nt:f:i:u:s:")) != -1) {
while ((c = getopt(argc, (char **)argv, "hacl:m:nt:f:i:u:s:p:")) != -1) {
switch (c) {
case 'f':
// format
Expand Down Expand Up @@ -103,6 +119,35 @@ int runAudioSwitch(int argc, const char * argv[]) {
}
break;

case 'l':
// set the speaker layout to 5.1.4
function = kFunctionLayout;
if (strcmp(optarg, "5_1_4") == 0) {
layoutRequested = kL5_1_4;
} else if (strcmp(optarg, "7_1_2") == 0) {
layoutRequested = kL7_1_2;
} else if (strcmp(optarg, "9_1_6") == 0) {
layoutRequested = kL9_1_6;
} else {
printf("Invalid Layout operation type \"%s\" specified.\n", optarg);
showUsage(argv[0]);
return 1;
}
break;

case 'p':
token = strtok(optarg, s);
i=0;
while( token != NULL ) {
channelNumber[i] = atoi(token);
i++;
if (i>15) {
break;
}
token = strtok(NULL, s);
}
break;

case 'n':
// cycle to the next audio device
function = kFunctionCycleNext;
Expand Down Expand Up @@ -202,6 +247,39 @@ int runAudioSwitch(int argc, const char * argv[]) {
sprintf(printableDeviceName, "Device with UID: %s", getDeviceUID(chosenDeviceID));
}

if (function == kFunctionLayout) {
OSStatus status;
if (typeRequested == kAudioTypeUnknown) typeRequested = kAudioTypeInput;

switch(typeRequested) {
case kAudioTypeOutput:
status = setSpeakerLayout(typeRequested, layoutRequested, channelNumber);
if(status != noErr) {
printf("Failed setting speaker layout. Error: %d (%s)", status, GetMacOSStatusErrorString(status));
return 1;
}
break;
case kAudioTypeInput:
printf("audio device \"%s\" is not an output device\n", deviceTypeName(typeRequested));
return 0;
break;
case kAudioTypeAll:
printf("audio device \"%s\" is not an output device\n", deviceTypeName(typeRequested));
return 0;
break;
case kAudioTypeSystemOutput:
printf("audio device \"%s\" is not an output device\n", deviceTypeName(typeRequested));
return 0;
break;
case kAudioTypeUnknown:
printf("audio device \"%s\" is unknown\n", deviceTypeName(typeRequested));
return 0;
break;
}
return 0;
}


if (function == kFunctionMute) {
OSStatus status;
bool anyStatusError = false;
Expand Down Expand Up @@ -235,6 +313,10 @@ int runAudioSwitch(int argc, const char * argv[]) {
printf("audio device \"%s\" may not be muted\n", deviceTypeName(typeRequested));
return 1;
break;
case kAudioTypeUnknown:
printf("audio device \"%s\" is unknown\n", deviceTypeName(typeRequested));
return 0;
break;
}
return 0;
}
Expand Down Expand Up @@ -690,6 +772,95 @@ int cycleNextForOneDevice(ASDeviceType typeRequested) {

}

OSStatus setSpeakerLayout(ASDeviceType typeRequested, ASLayoutType layoutRequested, int *channelNumber) {
AudioDeviceID currentDeviceID = kAudioDeviceUnknown;
char currentDeviceName[256];
UInt32 propertySize;
char strLayoutRequested[256];

currentDeviceID = getCurrentlySelectedDeviceID(typeRequested);
getDeviceName(currentDeviceID, currentDeviceName);

AudioObjectPropertyAddress propertyAddress = {
.mSelector = kAudioDevicePropertyPreferredChannelLayout,
.mScope = kAudioDevicePropertyScopeOutput,
.mElement = kAudioObjectPropertyElementMaster,
};

if (AudioObjectHasProperty(currentDeviceID, &propertyAddress)) {
propertySize = 0;

AudioObjectGetPropertyDataSize(currentDeviceID, &propertyAddress, 0, NULL, &propertySize);
AudioChannelLayout* layout = (AudioChannelLayout*)malloc(propertySize);

//layout->mChannelLayoutTag = kAudioChannelLayoutTag_Atmos_5_1_4;
switch (layoutRequested) {
case kL5_1_4:
sprintf(strLayoutRequested, "5.1.4 Atmos L R C LFE Ls Rs Vhl Vhr Ltr Rtr");
layout->mNumberChannelDescriptions = 10;

layout->mChannelDescriptions[channelNumber[0]].mChannelLabel = kAudioChannelLabel_Left;
layout->mChannelDescriptions[channelNumber[1]].mChannelLabel = kAudioChannelLabel_Right;
layout->mChannelDescriptions[channelNumber[2]].mChannelLabel = kAudioChannelLabel_Center;
layout->mChannelDescriptions[channelNumber[3]].mChannelLabel = kAudioChannelLabel_LFEScreen;
layout->mChannelDescriptions[channelNumber[4]].mChannelLabel = kAudioChannelLabel_LeftSurround;
layout->mChannelDescriptions[channelNumber[5]].mChannelLabel = kAudioChannelLabel_RightSurround;
layout->mChannelDescriptions[channelNumber[6]].mChannelLabel = kAudioChannelLabel_VerticalHeightLeft;
layout->mChannelDescriptions[channelNumber[7]].mChannelLabel = kAudioChannelLabel_VerticalHeightRight;
layout->mChannelDescriptions[channelNumber[8]].mChannelLabel = kAudioChannelLabel_LeftTopRear;
layout->mChannelDescriptions[channelNumber[9]].mChannelLabel = kAudioChannelLabel_RightTopRear;
break;

case kL7_1_2:
sprintf(strLayoutRequested, "7.1.2 Atmos L R C LFE Ls Rs Rls Rrs Ltm Rtm");
layout->mNumberChannelDescriptions = 10;

layout->mChannelDescriptions[channelNumber[0]].mChannelLabel = kAudioChannelLabel_Left;
layout->mChannelDescriptions[channelNumber[1]].mChannelLabel = kAudioChannelLabel_Right;
layout->mChannelDescriptions[channelNumber[2]].mChannelLabel = kAudioChannelLabel_Center;
layout->mChannelDescriptions[channelNumber[3]].mChannelLabel = kAudioChannelLabel_LFEScreen;
layout->mChannelDescriptions[channelNumber[4]].mChannelLabel = kAudioChannelLabel_LeftSurround;
layout->mChannelDescriptions[channelNumber[5]].mChannelLabel = kAudioChannelLabel_RightSurround;
layout->mChannelDescriptions[channelNumber[6]].mChannelLabel = kAudioChannelLabel_RearSurroundLeft;
layout->mChannelDescriptions[channelNumber[7]].mChannelLabel = kAudioChannelLabel_RearSurroundRight;
layout->mChannelDescriptions[channelNumber[8]].mChannelLabel = kAudioChannelLabel_LeftTopMiddle;
layout->mChannelDescriptions[channelNumber[9]].mChannelLabel = kAudioChannelLabel_RightTopMiddle;
break;
case kL9_1_6:
sprintf(strLayoutRequested, "9.1.6 Atmos L R C LFE Ls Rs Rls Rrs Lw Rw Vhl Vhr Ltm Rtm Ltr Rtr");
layout->mNumberChannelDescriptions = 16;

layout->mChannelDescriptions[channelNumber[0]].mChannelLabel = kAudioChannelLabel_Left;
layout->mChannelDescriptions[channelNumber[1]].mChannelLabel = kAudioChannelLabel_Right;
layout->mChannelDescriptions[channelNumber[2]].mChannelLabel = kAudioChannelLabel_Center;
layout->mChannelDescriptions[channelNumber[3]].mChannelLabel = kAudioChannelLabel_LFEScreen;
layout->mChannelDescriptions[channelNumber[4]].mChannelLabel = kAudioChannelLabel_LeftSurround;
layout->mChannelDescriptions[channelNumber[5]].mChannelLabel = kAudioChannelLabel_RightSurround;
layout->mChannelDescriptions[channelNumber[6]].mChannelLabel = kAudioChannelLabel_RearSurroundLeft;
layout->mChannelDescriptions[channelNumber[7]].mChannelLabel = kAudioChannelLabel_RearSurroundRight;
layout->mChannelDescriptions[channelNumber[8]].mChannelLabel = kAudioChannelLabel_LeftWide;
layout->mChannelDescriptions[channelNumber[9]].mChannelLabel = kAudioChannelLabel_RightWide;
layout->mChannelDescriptions[channelNumber[10]].mChannelLabel = kAudioChannelLabel_VerticalHeightLeft;
layout->mChannelDescriptions[channelNumber[11]].mChannelLabel = kAudioChannelLabel_VerticalHeightRight;
layout->mChannelDescriptions[channelNumber[12]].mChannelLabel = kAudioChannelLabel_LeftTopMiddle;
layout->mChannelDescriptions[channelNumber[13]].mChannelLabel = kAudioChannelLabel_RightTopMiddle;
layout->mChannelDescriptions[channelNumber[14]].mChannelLabel = kAudioChannelLabel_LeftTopRear;
layout->mChannelDescriptions[channelNumber[15]].mChannelLabel = kAudioChannelLabel_RightTopRear;
break;
default:
return 0;
}

for (UInt32 i = 0; i < layout->mNumberChannelDescriptions; i++) {
layout->mChannelDescriptions[i].mChannelFlags = kAudioChannelFlags_AllOff;
}

printf("Setting device %s to %s\n", currentDeviceName, strLayoutRequested);
return AudioObjectSetPropertyData(currentDeviceID, &propertyAddress, 0, NULL, propertySize, layout);
}
return 0;
}


OSStatus setMute(ASDeviceType typeRequested, ASMuteType muteRequested) {
AudioDeviceID currentDeviceID = kAudioDeviceUnknown;
Expand Down
9 changes: 9 additions & 0 deletions audio_switch.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,13 @@ typedef enum {
kToggleMute = 2,
} ASMuteType;

typedef enum {
kL5_1_4 = 0,
kL7_1_2 = 1,
kL9_1_6 = 2,
}
ASLayoutType;

enum {
kFunctionSetDeviceByName = 1,
kFunctionShowHelp = 2,
Expand All @@ -65,6 +72,7 @@ enum {
kFunctionSetDeviceByID = 6,
kFunctionSetDeviceByUID = 7,
kFunctionMute = 8,
kFunctionLayout = 9,
};


Expand All @@ -88,4 +96,5 @@ int setAllDevicesByName(char * requestedDeviceName);
int cycleNext(ASDeviceType typeRequested);
int cycleNextForOneDevice(ASDeviceType typeRequested);
OSStatus setMute(ASDeviceType typeRequested, ASMuteType mute);
OSStatus setSpeakerLayout(ASDeviceType typeRequested, ASLayoutType layoutRequested, int * channelNumber);
void showAllDevices(ASDeviceType typeRequested, ASOutputType outputRequested);