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Update the advanced_config example.

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This commit is contained in:
David Reid
2018-04-29 17:11:44 +10:00
parent e07e02323e
commit baf8830cb0
1 changed files with 12 additions and 42 deletions
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examples/advanced_config.c
+11 -41
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@@ -65,9 +65,6 @@ int main(int argc, char** argv)
// backend includes all devices (and there's a lot of them!).
contextConfig.alsa.useVerboseDeviceEnumeration = MAL_TRUE;
// Typical installations of ALSA include a null device. The config below will exclude it from enumeration.
contextConfig.alsa.excludeNullDevice = MAL_TRUE;
// JACK
// ----
@@ -104,56 +101,29 @@ int main(int argc, char** argv)
}
// Enumerate playback devices.
// Enumerate devices.
mal_device_info* pPlaybackDeviceInfos;
mal_uint32 playbackDeviceCount;
if (mal_enumerate_devices(&context, mal_device_type_playback, &playbackDeviceCount, NULL) != MAL_SUCCESS) {
printf("Failed to count playback devices.");
mal_context_uninit(&context);
mal_device_info* pCaptureDeviceInfos;
mal_uint32 captureDeviceCount;
mal_result result = mal_context_get_devices(&context, &pPlaybackDeviceInfos, &playbackDeviceCount, &pCaptureDeviceInfos, &captureDeviceCount);
if (result != MAL_SUCCESS) {
printf("Failed to retrieve device information.\n");
return -3;
}
mal_device_info* pPlaybackDeviceInfos = (mal_device_info*)malloc(playbackDeviceCount * sizeof(*pPlaybackDeviceInfos));
if (mal_enumerate_devices(&context, mal_device_type_playback, &playbackDeviceCount, pPlaybackDeviceInfos) != MAL_SUCCESS) {
printf("Failed to enumerate playback devices.");
free(pPlaybackDeviceInfos);
mal_context_uninit(&context);
return -4;
}
printf("Playback Devices (%d)\n", playbackDeviceCount);
for (mal_uint32 iDevice = 0; iDevice < playbackDeviceCount; ++iDevice) {
printf(" %u: %s\n", iDevice, pPlaybackDeviceInfos[iDevice].name);
}
free(pPlaybackDeviceInfos);
pPlaybackDeviceInfos = NULL;
printf("\n");
// Enumerate capture devices.
mal_uint32 captureDeviceCount;
if (mal_enumerate_devices(&context, mal_device_type_capture, &captureDeviceCount, NULL) != MAL_SUCCESS) {
printf("Failed to count capture devices.");
mal_context_uninit(&context);
return -5;
}
mal_device_info* pCaptureDeviceInfos = (mal_device_info*)malloc(captureDeviceCount * sizeof(*pCaptureDeviceInfos));
if (mal_enumerate_devices(&context, mal_device_type_capture, &captureDeviceCount, pCaptureDeviceInfos) != MAL_SUCCESS) {
printf("Failed to enumerate capture devices.");
free(pCaptureDeviceInfos);
mal_context_uninit(&context);
return -6;
}
printf("Capture Devices (%d)\n", captureDeviceCount);
for (mal_uint32 iDevice = 0; iDevice < captureDeviceCount; ++iDevice) {
printf(" %u: %s\n", iDevice, pCaptureDeviceInfos[iDevice].name);
}
free(pCaptureDeviceInfos);
pCaptureDeviceInfos = NULL;
// Open the device.
//
@@ -168,7 +138,7 @@ int main(int argc, char** argv)
// Applications can request exclusive control of the device using the config variable below. Note that not all
// backends support this feature, so this is actually just a hint.
deviceConfig.preferExclusiveMode = MAL_TRUE;
deviceConfig.shareMode = mal_share_mode_exclusive;
// mini_al allows applications to control the mapping of channels. The config below swaps the left and right
// channels. Normally in an interleaved audio stream, the left channel comes first, but we can change that
@@ -193,9 +163,9 @@ int main(int argc, char** argv)
strcpy(customDeviceID.alsa, "hw:0,0");
// The ALSA backend also supports a mini_al-specific format which looks like this: ":0,0". In this case,
// mini_al will try different plugins depending on the preferExclusiveMode setting. When using shared mode
// it will convert ":0,0" to "dmix:0,0"/"dsnoop:0,0". For exclusive mode (or if dmix/dsnoop fails) it will
// convert it to "hw:0,0". This is how the ALSA backend honors the preferExclusiveMode hint.
// mini_al will try different plugins depending on the shareMode setting. When using shared mode it will
// convert ":0,0" to "dmix:0,0"/"dsnoop:0,0". For exclusive mode (or if dmix/dsnoop fails) it will convert
// it to "hw:0,0". This is how the ALSA backend honors the shareMode hint.
strcpy(customDeviceID.alsa, ":0,0");
}
#endif