mirror of https://github.com/mpv-player/mpv
197 lines
4.9 KiB
C
197 lines
4.9 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <unistd.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <libdxr3/api.h>
|
|
|
|
#include "../config.h"
|
|
|
|
#include "afmt.h"
|
|
|
|
#include "audio_out.h"
|
|
#include "audio_out_internal.h"
|
|
|
|
extern int verbose;
|
|
|
|
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
|
|
|
|
static char *em8300_ma="/dev/em8300_ma";
|
|
static audio_buf_info dxr3_buf_info;
|
|
|
|
// to set/get/query special features/parameters
|
|
static int control(int cmd,int arg)
|
|
{
|
|
switch(cmd)
|
|
{
|
|
case AOCONTROL_QUERY_FORMAT:
|
|
return CONTROL_TRUE;
|
|
case AOCONTROL_GET_VOLUME:
|
|
case AOCONTROL_SET_VOLUME:
|
|
return CONTROL_OK;
|
|
return CONTROL_ERROR;
|
|
}
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
// open & setup audio device
|
|
// return: 1=success 0=fail
|
|
static int init(int rate,int channels,int format,int flags)
|
|
{
|
|
if( dxr3_get_status() == DXR3_STATUS_CLOSED )
|
|
if( dxr3_open( "/dev/em8300" ) < 0 )
|
|
{
|
|
printf( "Failed to initialize the DXR3\n" );
|
|
return 0;
|
|
}
|
|
|
|
if( dxr3_audio_get_filedescriptor( ) < 0 )
|
|
{
|
|
printf("Can't open audio device %s -> nosound\n",em8300_ma);
|
|
return 0;
|
|
}
|
|
|
|
ao_format = format;
|
|
ioctl (dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_SETFMT, &ao_format);
|
|
if(format == AFMT_AC3 && ao_format != AFMT_AC3)
|
|
{
|
|
printf("Can't set audio device %s to AC3 output\n", em8300_ma);
|
|
return 0;
|
|
}
|
|
printf("audio_setup: sample format: %s (requested: %s)\n",
|
|
audio_out_format_name(ao_format), audio_out_format_name(format));
|
|
|
|
if(format != AFMT_AC3)
|
|
{
|
|
ao_channels=channels-1;
|
|
ioctl (dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_STEREO, &ao_channels);
|
|
|
|
// set rate
|
|
ao_samplerate=rate;
|
|
ioctl (dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_SPEED, &ao_samplerate);
|
|
printf("audio_setup: using %d Hz samplerate (requested: %d)\n",ao_samplerate,rate);
|
|
}
|
|
|
|
if(ioctl(dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_GETOSPACE, &dxr3_buf_info)==-1){
|
|
int r=0;
|
|
printf("audio_setup: driver doesn't support SNDCTL_DSP_GETOSPACE :-(\n");
|
|
if(ioctl(dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_GETBLKSIZE, &r)==-1){
|
|
printf("audio_setup: %d bytes/frag (config.h)\n",ao_outburst);
|
|
} else {
|
|
ao_outburst=r;
|
|
printf("audio_setup: %d bytes/frag (GETBLKSIZE)\n",ao_outburst);
|
|
}
|
|
} else {
|
|
printf("audio_setup: frags: %3d/%d (%d bytes/frag) free: %6d\n",
|
|
dxr3_buf_info.fragments, dxr3_buf_info.fragstotal, dxr3_buf_info.fragsize, dxr3_buf_info.bytes);
|
|
if(ao_buffersize==-1) ao_buffersize=dxr3_buf_info.bytes;
|
|
ao_outburst=dxr3_buf_info.fragsize;
|
|
}
|
|
|
|
if(ao_buffersize==-1){
|
|
// Measuring buffer size:
|
|
void* data;
|
|
ao_buffersize=0;
|
|
#ifdef HAVE_AUDIO_SELECT
|
|
data=malloc(ao_outburst); memset(data,0,ao_outburst);
|
|
while(ao_buffersize<0x40000){
|
|
fd_set rfds;
|
|
struct timeval tv;
|
|
FD_ZERO(&rfds); FD_SET(dxr3_audio_get_filedescriptor( ),&rfds);
|
|
tv.tv_sec=0; tv.tv_usec = 0;
|
|
if(!select(dxr3_audio_get_filedescriptor( )+1, NULL, &rfds, NULL, &tv)) break;
|
|
write(dxr3_audio_get_filedescriptor( ),data,ao_outburst);
|
|
ao_buffersize+=ao_outburst;
|
|
}
|
|
free(data);
|
|
if(ao_buffersize==0){
|
|
printf("\n *** Your audio driver DOES NOT support select() ***\n");
|
|
printf("Recompile mplayer with #undef HAVE_AUDIO_SELECT in config.h !\n\n");
|
|
return 0;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
return 1;
|
|
}
|
|
|
|
// close audio device
|
|
static void uninit()
|
|
{
|
|
ioctl(dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_RESET, NULL);
|
|
dxr3_close( );
|
|
}
|
|
|
|
// stop playing and empty buffers (for seeking/pause)
|
|
static void reset()
|
|
{
|
|
uninit();
|
|
if(dxr3_audio_get_filedescriptor( )<0)
|
|
{
|
|
printf("\nFatal error: *** CANNOT RE-OPEN / RESET AUDIO DEVICE ***\n");
|
|
return;
|
|
}
|
|
|
|
ioctl (dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_SETFMT, &ao_format);
|
|
if(ao_format != AFMT_AC3)
|
|
{
|
|
ioctl (dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_STEREO, &ao_channels);
|
|
ioctl (dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_SPEED, &ao_samplerate);
|
|
}
|
|
}
|
|
|
|
// 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()
|
|
{
|
|
if(ioctl(dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_GETOSPACE, &dxr3_buf_info)!=-1)
|
|
return (dxr3_buf_info.fragments*dxr3_buf_info.fragsize);
|
|
}
|
|
|
|
static int play(void* data,int len,int flags)
|
|
{
|
|
return write(dxr3_audio_get_filedescriptor( ),data,len);;
|
|
}
|
|
|
|
// return: how many unplayed bytes are in the buffer
|
|
static int get_delay()
|
|
{
|
|
int r=0;
|
|
if(ioctl(dxr3_audio_get_filedescriptor( ), SNDCTL_DSP_GETODELAY, &r)!=-1)
|
|
return r;
|
|
}
|
|
|