mirror of https://github.com/mpv-player/mpv
267 lines
6.2 KiB
C
267 lines
6.2 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 <sys/soundcard.h>
|
|
|
|
#include "../config.h"
|
|
|
|
#include "audio_out.h"
|
|
#include "audio_out_internal.h"
|
|
//#include "afmt.h"
|
|
|
|
extern int verbose;
|
|
|
|
static ao_info_t info =
|
|
{
|
|
"OSS/ioctl audio output",
|
|
"oss",
|
|
"A'rpi",
|
|
""
|
|
};
|
|
|
|
LIBAO_EXTERN(oss)
|
|
|
|
// there are some globals:
|
|
// ao_samplerate
|
|
// ao_channels
|
|
// ao_format
|
|
// ao_bps
|
|
// ao_outburst
|
|
// ao_buffersize
|
|
|
|
static char *dsp="/dev/dsp";
|
|
static audio_buf_info zz;
|
|
static int audio_fd=-1;
|
|
|
|
char *oss_mixer_device = "/dev/mixer";
|
|
int oss_mixer_usemaster = 0;
|
|
|
|
// to set/get/query special features/parameters
|
|
static int control(int cmd,int arg){
|
|
switch(cmd){
|
|
case AOCONTROL_SET_DEVICE:
|
|
dsp=(char*)arg;
|
|
return CONTROL_OK;
|
|
case AOCONTROL_QUERY_FORMAT:
|
|
return CONTROL_TRUE;
|
|
case AOCONTROL_GET_VOLUME:
|
|
case AOCONTROL_SET_VOLUME:
|
|
{
|
|
ao_control_vol_t *vol = (ao_control_vol_t *)arg;
|
|
int fd, v, mcmd, devs;
|
|
|
|
if ((fd = open("/dev/mixer", O_RDONLY)) > 0)
|
|
{
|
|
ioctl(fd, SOUND_MIXER_READ_DEVMASK, &devs);
|
|
if ((devs & SOUND_MASK_PCM) && (oss_mixer_usemaster == 0))
|
|
if (cmd == AOCONTROL_GET_VOLUME)
|
|
mcmd = SOUND_MIXER_READ_PCM;
|
|
else
|
|
mcmd = SOUND_MIXER_WRITE_PCM;
|
|
else if ((devs & SOUND_MASK_VOLUME) && (oss_mixer_usemaster == 1))
|
|
if (cmd == AOCONTROL_GET_VOLUME)
|
|
mcmd = SOUND_MIXER_READ_VOLUME;
|
|
else
|
|
mcmd = SOUND_MIXER_WRITE_VOLUME;
|
|
else
|
|
{
|
|
close(fd);
|
|
return CONTROL_ERROR;
|
|
}
|
|
|
|
if (cmd == AOCONTROL_GET_VOLUME)
|
|
{
|
|
ioctl(fd, cmd, &v);
|
|
vol->right = (v & 0xFF00) >> 8;
|
|
vol->left = v & 0x00FF;
|
|
}
|
|
else
|
|
{
|
|
v = ((int)vol->right << 8) | (int)vol->left;
|
|
ioctl(fd, cmd, &v);
|
|
}
|
|
close(fd);
|
|
return CONTROL_OK;
|
|
}
|
|
else
|
|
return CONTROL_ERROR;
|
|
}
|
|
return CONTROL_ERROR;
|
|
default:
|
|
}
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
// open & setup audio device
|
|
// return: 1=success 0=fail
|
|
static int init(int rate,int channels,int format,int flags){
|
|
|
|
// printf("ao2: %d Hz %d chans %s\n",rate,channels,
|
|
// audio_out_format_name(format));
|
|
|
|
if (ao_subdevice)
|
|
dsp = ao_subdevice;
|
|
|
|
if (verbose)
|
|
printf("audio_setup: using '%s' dsp device\n", dsp);
|
|
|
|
audio_fd=open(dsp, O_WRONLY);
|
|
if(audio_fd<0){
|
|
printf("Can't open audio device %s -> nosound\n",dsp);
|
|
return 0;
|
|
}
|
|
|
|
ao_format=format;
|
|
ioctl (audio_fd, SNDCTL_DSP_SETFMT, &ao_format);
|
|
printf("audio_setup: sample format: %s (requested: %s)\n",
|
|
audio_out_format_name(ao_format), audio_out_format_name(format));
|
|
|
|
ao_channels=channels-1;
|
|
ioctl (audio_fd, SNDCTL_DSP_STEREO, &ao_channels);
|
|
|
|
// set rate
|
|
ao_samplerate=rate;
|
|
ioctl (audio_fd, SNDCTL_DSP_SPEED, &ao_samplerate);
|
|
printf("audio_setup: using %d Hz samplerate (requested: %d)\n",ao_samplerate,rate);
|
|
|
|
if(ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &zz)==-1){
|
|
int r=0;
|
|
printf("audio_setup: driver doesn't support SNDCTL_DSP_GETOSPACE :-(\n");
|
|
if(ioctl(audio_fd, 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",
|
|
zz.fragments, zz.fragstotal, zz.fragsize, zz.bytes);
|
|
if(ao_buffersize==-1) ao_buffersize=zz.bytes;
|
|
ao_outburst=zz.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(audio_fd,&rfds);
|
|
tv.tv_sec=0; tv.tv_usec = 0;
|
|
if(!select(audio_fd+1, NULL, &rfds, NULL, &tv)) break;
|
|
write(audio_fd,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(){
|
|
#ifdef SNDCTL_DSP_RESET
|
|
ioctl(audio_fd, SNDCTL_DSP_RESET, NULL);
|
|
#endif
|
|
close(audio_fd);
|
|
}
|
|
|
|
// stop playing and empty buffers (for seeking/pause)
|
|
static void reset(){
|
|
uninit();
|
|
audio_fd=open(dsp, O_WRONLY);
|
|
if(audio_fd<0){
|
|
printf("\nFatal error: *** CANNOT RE-OPEN / RESET AUDIO DEVICE ***\n");
|
|
return;
|
|
}
|
|
|
|
ioctl (audio_fd, SNDCTL_DSP_SETFMT, &ao_format);
|
|
ioctl (audio_fd, SNDCTL_DSP_STEREO, &ao_channels);
|
|
ioctl (audio_fd, 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(){
|
|
int playsize=ao_outburst;
|
|
|
|
#ifdef SNDCTL_DSP_GETOSPACE
|
|
if(ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &zz)!=-1){
|
|
// calculate exact buffer space:
|
|
return zz.fragments*zz.fragsize;
|
|
}
|
|
#endif
|
|
|
|
// check buffer
|
|
#ifdef HAVE_AUDIO_SELECT
|
|
{ fd_set rfds;
|
|
struct timeval tv;
|
|
FD_ZERO(&rfds);
|
|
FD_SET(audio_fd, &rfds);
|
|
tv.tv_sec = 0;
|
|
tv.tv_usec = 0;
|
|
if(!select(audio_fd+1, NULL, &rfds, NULL, &tv)) return 0; // not block!
|
|
}
|
|
#endif
|
|
|
|
return ao_outburst;
|
|
}
|
|
|
|
// 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){
|
|
len/=ao_outburst;
|
|
len=write(audio_fd,data,len*ao_outburst);
|
|
return len;
|
|
}
|
|
|
|
static int audio_delay_method=2;
|
|
|
|
// return: how many unplayed bytes are in the buffer
|
|
static int get_delay(){
|
|
if(audio_delay_method==2){
|
|
//
|
|
int r=0;
|
|
if(ioctl(audio_fd, SNDCTL_DSP_GETODELAY, &r)!=-1)
|
|
return r;
|
|
audio_delay_method=1; // fallback if not supported
|
|
}
|
|
if(audio_delay_method==1){
|
|
// SNDCTL_DSP_GETOSPACE
|
|
if(ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &zz)!=-1)
|
|
return ao_buffersize-zz.bytes;
|
|
audio_delay_method=0; // fallback if not supported
|
|
}
|
|
return ao_buffersize;
|
|
}
|
|
|