1 files changed, 81 insertions, 0 deletions
diff --git a/dxr3audio-oss.c b/dxr3audio-oss.c
new file mode 100644
index 0000000..13d4de7
--- /dev/null
+++ b/dxr3audio-oss.c
@@ -0,0 +1,81 @@
+#include <sys/soundcard.h>
+#include <unistd.h> // for close
+
+#include "dxr3audio-oss.h"
+#include "dxr3interface.h"
+
+static const char *DEV_DXR3_OSS   = "_ma";
+
+void cAudioOss::openDevice()
+{
+    fd = cDxr3Interface::Dxr3Open(DEV_DXR3_OSS, O_RDWR | O_NONBLOCK);
+
+    if (!fd) {
+        esyslog("[dxr3-audio-oss] failed to open dxr3 audio subdevice");
+        exit(1);
+    }
+
+    if (cDxr3ConfigData::Instance().GetUseDigitalOut()) {
+        dsyslog("[dxr3-audio-oss] audio mode: digital");
+        setAudioMode(DigitalPcm);
+    } else {
+        dsyslog("[dxr3-audio-oss] audio mode: analog");
+        setAudioMode(Analog);
+    }
+}
+
+void cAudioOss::releaseDevice()
+{
+    close(fd);
+}
+
+void cAudioOss::setup(SampleContext ctx)
+{
+    // set sample rate
+    if (curContext.samplerate != ctx.samplerate) {
+        dsyslog("[dxr3-audio-oss] changing samplerate to %d (old %d) ", ctx.samplerate, curContext.samplerate);
+        curContext.samplerate = ctx.samplerate;
+        CHECK( ioctl(fd, SNDCTL_DSP_SAMPLESIZE, &ctx.samplerate));
+    }
+
+    // set channels
+    if (curContext.channels != ctx.channels) {
+        dsyslog("[dxr3-audio-oss] changing num of channels to %d (old %d)", ctx.channels, curContext.channels);
+        curContext.channels = ctx.channels;
+        CHECK( ioctl(fd, SNDCTL_DSP_CHANNELS, &ctx.channels));
+    }
+}
+
+void cAudioOss::write(uchar* data, size_t size)
+{
+    size_t ret = WriteAllOrNothing(fd, data, size, 1000, 10);
+
+    if (ret != size) {
+        dsyslog("[dxr3-audio-oss] writing audio failed");
+    }
+}
+
+void cAudioOss::setAudioMode(AudioMode mode)
+{
+    uint32_t ioval;
+
+    switch (mode) {
+    case Analog:
+        ioval = EM8300_AUDIOMODE_ANALOG;
+        break;
+
+    case DigitalPcm:
+        ioval = EM8300_AUDIOMODE_DIGITALPCM;
+        break;
+
+    case Ac3:
+        ioval = EM8300_AUDIOMODE_DIGITALAC3;
+        break;
+    }
+
+    // we need to do it this way, as we dont have access
+    // to the file handle for the conrtol sub device.
+    if (cDxr3Interface::Instance().OssSetPlayMode(ioval)) {
+        this->mode = mode;
+    }
+}