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