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output/alsa: add #ifdef ENABLE_DSD

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Fixes the --disable-dsd build.

See http://bugs.musicpd.org/view.php?id=4498
This commit is contained in:
Max Kellermann 2016-02-26 18:41:52 +01:00
parent 5628dcf47e
commit 111528e51c
1 changed files with 20 additions and 2 deletions
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22
src/output/plugins/AlsaOutputPlugin.cxx
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@ -67,12 +67,14 @@ struct AlsaOutput {
/** use memory mapped I/O? */
bool use_mmap;
#ifdef ENABLE_DSD
/**
* Enable DSD over PCM according to the DoP standard standard?
*
* @see http://dsd-guide.com/dop-open-standard
*/
bool dop;
#endif
/** libasound's buffer_time setting (in microseconds) */
unsigned int buffer_time;
@ -161,9 +163,12 @@ struct AlsaOutput {
void Cancel();
private:
#ifdef ENABLE_DSD
bool SetupDop(AudioFormat audio_format,
PcmExport::Params &params,
Error &error);
#endif
bool SetupOrDop(AudioFormat &audio_format, Error &error);
int Recover(int err);
@ -189,9 +194,11 @@ AlsaOutput::Configure(const ConfigBlock &block, Error &error)
use_mmap = block.GetBlockValue("use_mmap", false);
#ifdef ENABLE_DSD
dop = block.GetBlockValue("dop", false) ||
/* legacy name from MPD 0.18 and older: */
block.GetBlockValue("dsd_usb", false);
#endif
buffer_time = block.GetBlockValue("buffer_time",
MPD_ALSA_BUFFER_TIME_US);
@ -672,6 +679,8 @@ error:
return false;
}
#ifdef ENABLE_DSD
inline bool
AlsaOutput::SetupDop(const AudioFormat audio_format,
PcmExport::Params &params,
@ -713,16 +722,25 @@ AlsaOutput::SetupDop(const AudioFormat audio_format,
return true;
}
#endif
inline bool
AlsaOutput::SetupOrDop(AudioFormat &audio_format, Error &error)
{
PcmExport::Params params;
params.alsa_channel_order = true;
#ifdef ENABLE_DSD
params.dop = dop && audio_format.format == SampleFormat::DSD;
const bool success = params.dop
#endif
const bool success =
#ifdef ENABLE_DSD
params.dop
? SetupDop(audio_format, params, error)
: alsa_setup(this, audio_format, params, error);
:
#endif
alsa_setup(this, audio_format, params, error);
if (!success)
return false;