mirror of
https://github.com/mpv-player/mpv
synced 2024-11-11 00:15:33 +01:00
9b68d1309b
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5061 b3059339-0415-0410-9bf9-f77b7e298cf2
148 lines
3.3 KiB
C
148 lines
3.3 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include "../config.h"
|
|
|
|
#include "audio_out.h"
|
|
#include "audio_out_internal.h"
|
|
|
|
#include "afmt.h"
|
|
|
|
#ifdef HAVE_DVB
|
|
#include <ost/audio.h>
|
|
audioMixer_t dvb_mixer={255,255};
|
|
extern int vo_mpegpes_fd;
|
|
extern int vo_mpegpes_fd2;
|
|
#endif
|
|
|
|
static ao_info_t info =
|
|
{
|
|
#ifdef HAVE_DVB
|
|
"DVB audio output",
|
|
#else
|
|
"Mpeg-PES audio output",
|
|
#endif
|
|
"mpegpes",
|
|
"A'rpi",
|
|
""
|
|
};
|
|
|
|
LIBAO_EXTERN(mpegpes)
|
|
|
|
|
|
// to set/get/query special features/parameters
|
|
static int control(int cmd,int arg){
|
|
#ifdef HAVE_DVB
|
|
switch(cmd){
|
|
case AOCONTROL_GET_VOLUME:
|
|
if(vo_mpegpes_fd2>=0){
|
|
((ao_control_vol_t*)(arg))->left=dvb_mixer.volume_left/2.56;
|
|
((ao_control_vol_t*)(arg))->right=dvb_mixer.volume_right/2.56;
|
|
return CONTROL_OK;
|
|
}
|
|
return CONTROL_ERROR;
|
|
case AOCONTROL_SET_VOLUME:
|
|
if(vo_mpegpes_fd2>=0){
|
|
dvb_mixer.volume_left=((ao_control_vol_t*)(arg))->left*2.56;
|
|
dvb_mixer.volume_right=((ao_control_vol_t*)(arg))->right*2.56;
|
|
if(dvb_mixer.volume_left>255) dvb_mixer.volume_left=255;
|
|
if(dvb_mixer.volume_right>255) dvb_mixer.volume_right=255;
|
|
// printf("Setting DVB volume: %d ; %d \n",dvb_mixer.volume_left,dvb_mixer.volume_right);
|
|
if ( (ioctl(vo_mpegpes_fd2,AUDIO_SET_MIXER, &dvb_mixer) < 0)){
|
|
perror("DVB AUDIO SET MIXER: ");
|
|
return CONTROL_ERROR;
|
|
}
|
|
return CONTROL_OK;
|
|
}
|
|
return CONTROL_ERROR;
|
|
}
|
|
#endif
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
static int freq=0;
|
|
static int freq_id=0;
|
|
|
|
// open & setup audio device
|
|
// return: 1=success 0=fail
|
|
static int init(int rate,int channels,int format,int flags){
|
|
|
|
ao_data.outburst=2000;
|
|
ao_data.format=format;
|
|
freq=rate;
|
|
|
|
switch(rate){
|
|
case 48000: freq_id=0;break;
|
|
case 96000: freq_id=1;break;
|
|
case 44100: freq_id=2;break;
|
|
case 32000: freq_id=3;break;
|
|
default:
|
|
fprintf(stderr,"ao_mpegpes: %d Hz not supported, try to resample (RTFM)\n",rate);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
// close audio device
|
|
static void uninit(){
|
|
|
|
}
|
|
|
|
// stop playing and empty buffers (for seeking/pause)
|
|
static void reset(){
|
|
|
|
}
|
|
|
|
// 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()
|
|
{
|
|
}
|
|
|
|
void send_pes_packet(unsigned char* data,int len,int id,int timestamp);
|
|
void send_lpcm_packet(unsigned char* data,int len,int id,int timestamp,int freq_id);
|
|
extern int vo_pts;
|
|
|
|
// return: how many bytes can be played without blocking
|
|
static int get_space(){
|
|
float x=(float)(vo_pts-ao_data.pts)/90000.0;
|
|
int y;
|
|
if(x<=0) return 0;
|
|
y=freq*4*x;y/=ao_data.outburst;y*=ao_data.outburst;
|
|
if(y>32000) y=32000;
|
|
// printf("diff: %5.3f -> %d \n",x,y);
|
|
return y;
|
|
}
|
|
|
|
// 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(ao_data.format==AFMT_MPEG)
|
|
send_pes_packet(data,len,0x1C0,ao_data.pts);
|
|
else {
|
|
int i;
|
|
unsigned short *s=data;
|
|
// if(len>2000) len=2000;
|
|
// printf("ao_mpegpes: len=%d \n",len);
|
|
for(i=0;i<len/2;i++) s[i]=(s[i]>>8)|(s[i]<<8); // le<->be
|
|
send_lpcm_packet(data,len,0xA0,ao_data.pts,freq_id);
|
|
}
|
|
return len;
|
|
}
|
|
|
|
// return: delay in seconds between first and last sample in buffer
|
|
static float get_delay(){
|
|
|
|
return 0.0;
|
|
}
|
|
|