mirror of https://github.com/mpv-player/mpv
275 lines
7.0 KiB
C
275 lines
7.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <linux/em8300.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.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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#include "audio_plugin.h"
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void perror( const char *s );
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#include <errno.h>
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int sys_nerr;
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extern int verbose;
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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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static audio_buf_info dxr3_buf_info;
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static int fd_control = 0, fd_audio = 0;
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static int need_conversion = 0;
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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_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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return CONTROL_OK;
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return CONTROL_ERROR;
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}
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return CONTROL_UNKNOWN;
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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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int ioval;
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ao_plugin_data.rate = rate;
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ao_plugin_data.channels = channels;
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ao_plugin_data.format = format;
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ao_plugin_data.sz_mult = 1;
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ao_plugin_data.sz_fix = 0;
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ao_plugin_data.delay_mult = 1;
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ao_plugin_data.delay_fix = 0;
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ao_plugin_cfg.pl_format_type = format;
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ao_plugin_cfg.pl_resample_fout = rate;
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fd_audio = open( "/dev/em8300_ma", O_WRONLY );
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if( fd_audio < 0 )
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{
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printf("AO: [dxr3] Can't open audio device /dev/em8300_ma -> nosound\n");
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return 0;
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}
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fd_control = open( "/dev/em8300", O_WRONLY );
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if( fd_control < 0 )
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{
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printf("AO: [dxr3] Can't open em8300 control /dev/em8300\n");
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return 0;
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}
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ioval = (format==AFMT_AC3)?EM8300_AUDIOMODE_DIGITALAC3:
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EM8300_AUDIOMODE_ANALOG;
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if( ioctl( fd_control, EM8300_IOCTL_SET_AUDIOMODE, &ioval ) < 0 )
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printf( "AO: [dxr3] Unable to set audiomode\n" );
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ioctl(fd_audio, SNDCTL_DSP_RESET, NULL);
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ao_data.format = format;
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if( ioctl (fd_audio, SNDCTL_DSP_SETFMT, &ao_data.format) < 0 )
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printf( "AO: [dxr3] Unable to set audio format\n" );
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if(format != ao_data.format)
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{
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need_conversion |= 0x1;
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ao_data.format = AFMT_S16_LE;
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ao_plugin_data.format = format;
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ao_plugin_cfg.pl_format_type = ao_data.format;
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}
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ao_data.channels=channels;
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if(format != AFMT_AC3)
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{
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if(channels>2)
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{
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if( ioctl (fd_audio, SNDCTL_DSP_CHANNELS, &ao_data.channels) < 0 )
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printf( "AO: [dxr3] Unable to set number of channels\n" );
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}
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else
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{
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int c = channels-1;
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if( ioctl(fd_audio,SNDCTL_DSP_STEREO,&c) < 0)
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printf( "AO: [dxr3] Unable to set number of channels for AC3\n" );
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}
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}
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ao_data.bps = channels*rate;
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if(format != AFMT_U8 && format != AFMT_S8)
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ao_data.bps*=2;
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if(format == AFMT_AC3)
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ao_data.bps*=2;
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ao_data.samplerate=rate;
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if( ioctl (fd_audio, SNDCTL_DSP_SPEED, &ao_data.samplerate) < 0 )
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{
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printf( "AO: [dxr3] Unable to set samplerate\n" );
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return 0;
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}
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if( rate != ao_data.samplerate )
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{
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need_conversion |= 0x2;
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ao_plugin_data.rate = rate;
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ao_plugin_cfg.pl_resample_fout = ao_data.samplerate;
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}
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if( ioctl(fd_audio, SNDCTL_DSP_GETOSPACE, &dxr3_buf_info)==-1 )
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{
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int r=0;
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printf("AO: [dxr3] Driver doesn't support SNDCTL_DSP_GETOSPACE :-(\n");
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if( ioctl( fd_audio, SNDCTL_DSP_GETBLKSIZE, &r) ==-1 )
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{
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printf( "AO: [dxr3] %d bytes/frag (config.h)\n", ao_data.outburst );
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}
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else
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{
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ao_data.outburst=r;
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printf( "AO: [dxr3] %d bytes/frag (GETBLKSIZE)\n",ao_data.outburst);
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}
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}
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else
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{
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printf("AO: [dxr3] frags: %3d/%d (%d bytes/frag) free: %6d\n",
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dxr3_buf_info.fragments, dxr3_buf_info.fragstotal, dxr3_buf_info.fragsize, dxr3_buf_info.bytes);
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ao_data.buffersize=dxr3_buf_info.bytes;
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ao_data.outburst=dxr3_buf_info.fragsize;
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}
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if(need_conversion)
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{
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if(need_conversion & 0x1)
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{
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if(!audio_plugin_format.init())
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return 0;
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ao_plugin_data.len = ao_data.buffersize*2;
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audio_plugin_format.control(AOCONTROL_PLUGIN_SET_LEN,0);
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}
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if(need_conversion & 0x2)
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{
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if(!audio_plugin_resample.init())
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return 0;
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ao_plugin_data.len = ao_data.buffersize*2;
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audio_plugin_resample.control(AOCONTROL_PLUGIN_SET_LEN,0);
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}
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}
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ioval = EM8300_PLAYMODE_PLAY;
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if( ioctl( fd_control, EM8300_IOCTL_SET_PLAYMODE, &ioval ) < 0 )
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printf( "AO: [dxr3] Unable to set playmode\n" );
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close( fd_control );
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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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printf( "AO: [dxr3] Uninitializing\n" );
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if( ioctl(fd_audio, SNDCTL_DSP_RESET, NULL) < 0 )
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printf( "AO: [dxr3] Unable to reset device\n" );
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if(need_conversion & 0x1) audio_plugin_format.uninit();
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if(need_conversion & 0x2) audio_plugin_resample.uninit();
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close( fd_audio );
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close( fd_control ); /* Just in case */
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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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if( ioctl(fd_audio, SNDCTL_DSP_RESET, NULL) < 0 )
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printf( "AO: [dxr3] Unable to reset device\n" );
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if(need_conversion & 0x1) audio_plugin_format.reset();
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if(need_conversion & 0x2) audio_plugin_resample.reset();
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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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int ioval;
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reset();
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fd_control = open( "/dev/em8300", O_WRONLY );
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if( fd_control < 0 )
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printf( "AO: [dxr3] Oops, unable to pause playback\n" );
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else
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{
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ioval = EM8300_PLAYMODE_PAUSED;
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if( ioctl( fd_control, EM8300_IOCTL_SET_PLAYMODE, &ioval ) < 0 )
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printf( "AO: [dxr3] Unable to pause playback\n" );
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close( fd_control );
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}
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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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int ioval;
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fd_control = open( "/dev/em8300", O_WRONLY );
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if( fd_control < 0 )
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printf( "AO: [dxr3] Oops, unable to resume playback\n" );
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else
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{
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ioval = EM8300_PLAYMODE_PLAY;
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if( ioctl( fd_control, EM8300_IOCTL_SET_PLAYMODE, &ioval ) < 0 )
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printf( "AO: [dxr3] Unable to resume playback\n" );
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close( fd_control );
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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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int space = 0;
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if( ioctl(fd_audio, SNDCTL_DSP_GETOSPACE, &dxr3_buf_info)==-1 )
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{
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printf( "AO: [dxr3] Unable to get unplayed bytes in buffer\n" );
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return ao_data.outburst;
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}
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space=dxr3_buf_info.fragments*dxr3_buf_info.fragsize;
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return space;
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}
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// playes 'len' bytes of 'data'
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// upsamples if samplerate < 44100
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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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int tmp = get_space();
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int size = (tmp<len)?tmp:len;
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ao_plugin_data.data = data;
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ao_plugin_data.len = size;
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if(need_conversion & 0x1) audio_plugin_format.play();
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if(need_conversion & 0x2) audio_plugin_resample.play();
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if( ioctl(fd_audio, EM8300_IOCTL_AUDIO_SETPTS, &ao_data.pts) < 0 )
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printf( "AO: [dxr3] Unable to set pts\n" );
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write(fd_audio,ao_plugin_data.data,ao_plugin_data.len);
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return size;
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}
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// return: delay in seconds between first and last sample in buffer
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static float get_delay()
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{
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return 0.0;
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}
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