ao_dxr3 by David Holm <dholm@telia.com>

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2646 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 163 insertions, 0 deletions

diff --git a/libao2/ao_dxr3.c b/libao2/ao_dxr3.c
new file mode 100644
index 0000000000..25ce523f96
--- /dev/null
+++ b/libao2/ao_dxr3.c
@@ -0,0 +1,163 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#include <libdxr3/api.h>
+
+#include "../config.h"
+
+#include "afmt.h"
+
+#include "audio_out.h"
+#include "audio_out_internal.h"
+
+struct 
+{
+    int ao_format;
+    int ao_rate;
+    int ao_channels;
+} ao_device;
+
+static ao_info_t info = 
+{
+	"DXR3/H+ audio out",
+	"dxr3",
+	"David Holm <dholm@iname.com>",
+	""
+};
+
+LIBAO_EXTERN(dxr3)
+
+// there are some globals:
+// ao_samplerate
+// ao_channels
+// ao_format
+// ao_bps
+// ao_outburst
+// ao_buffersize
+
+// to set/get/query special features/parameters
+static int control(int cmd,int arg)
+{
+    switch(cmd)
+    {
+	case AOCONTROL_SET_DEVICE:
+	    return CONTROL_OK;
+	case AOCONTROL_QUERY_FORMAT:
+	    return CONTROL_TRUE;
+	case AOCONTROL_GET_VOLUME:
+	case AOCONTROL_SET_VOLUME:
+	{
+    	    return CONTROL_OK;
+	}
+    }
+    return CONTROL_TRUE;
+}
+
+// open & setup audio device
+// return: 1=success 0=fail
+static int init(int rate,int channels,int format,int flags)
+{
+    ao_device.ao_format = format;
+    ao_device.ao_rate = rate;
+    ao_device.ao_channels = channels;
+    
+    if( dxr3_get_status() == DXR3_STATUS_CLOSED )
+    {
+	if( dxr3_open( "/dev/em8300", "/etc/dxr3.ux" ) != 0 ) printf( "Error loading /dev/em8300 with /etc/dxr3.ux microcode\n" );
+	printf( "DXR3 status: &s\n", dxr3_get_status() ? "opened":"closed" );
+    }
+    else
+	printf( "DXR3 already open\n" );
+
+    if( dxr3_set_playmode( DXR3_PLAYMODE_PLAY ) != 0 ) printf( "Error setting playmode of DXR3\n" );    
+    
+    if( format == AFMT_AC3 )
+    {
+	if( dxr3_audio_set_mode( DXR3_AUDIOMODE_DIGITALAC3 ) != 0 )
+	{
+	    printf( "Cannot set DXR3 to AC3 playback!\n" );
+	    return -1;
+	}
+    }
+    else
+    {
+	if( dxr3_audio_set_mode( DXR3_AUDIOMODE_ANALOG ) != 0 )
+	{
+	    printf( "Cannot set DXR3 to analog playback!\n" );
+	    return -1;
+	}
+	if( format == AFMT_U8 )
+	    dxr3_audio_set_samplesize( 8 );
+	else if( format == AFMT_S16_LE )
+	    dxr3_audio_set_samplesize( 16 );	
+	else
+	{
+	    printf( "Unsupported audio format\n" );
+	    return -1;
+	}
+    }
+    
+    dxr3_audio_set_stereo( (channels > 1) ? "true":"false" );
+    dxr3_audio_set_rate( rate );
+
+    return 1;
+}
+
+// close audio device
+static void uninit()
+{
+    dxr3_close();
+}
+
+// stop playing and empty buffers (for seeking/pause)
+static void reset()
+{
+    uninit();
+    if( !init( ao_device.ao_rate, ao_device.ao_channels, ao_device.ao_format, 0 ) )
+	printf("\nFatal error: *** CANNOT RE-OPEN / RESET AUDIO DEVICE ***\n");
+}
+
+// stop playing, keep buffers (for pause)
+static void audio_pause()
+{
+    // for now, just call reset();
+    reset();
+}
+
+// resume playing, after audio_pause()
+static void audio_resume()
+{
+}
+
+
+// return: how many bytes can be played without blocking
+static int get_space()
+{
+    return dxr3_audio_get_buffersize()-dxr3_audio_get_bytesleft();
+}
+
+// plays 'len' bytes of 'data'
+// it should round it down to outburst*n
+// return: number of bytes played
+static int play(void* data,int len,int flags)
+{
+    if(len)
+        if( ao_device.ao_format == AFMT_AC3 )
+	    return dxr3_audio_write_ac3( data, len );
+	else
+    	    return dxr3_audio_write_ac3( data, len );
+
+    printf( "Invalid audio data\n" );
+    return 0;
+}
+
+// return: how many unplayed bytes are in the buffer
+static int get_delay()
+{
+    return dxr3_audio_get_bytesleft();
+}
+