RepoMirrors
/
mpv
mirror of https://github.com/mpv-player/mpv
1
0
Fork 0
Code Issues Releases Wiki Activity
mpv/libvo/vo_mpegpes.c

352 lines
8.0 KiB
C
Raw Blame History

// Don't change for DVB card, it must be 2048
#define PES_MAX_SIZE 2048
/*
* Based on:
*
* test_av.c - Test program for new API
*
* Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
* & Marcus Metzler <marcus@convergence.de>
* for convergence integrated media GmbH
*
* libav - MPEG-PS multiplexer, part of ffmpeg
* Copyright Gerard Lantau (see http://ffmpeg.sf.net)
*
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "mp_msg.h"
#ifdef HAVE_DVB
#include <sys/poll.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <time.h>
#include <ost/dmx.h>
#include <ost/frontend.h>
#include <ost/sec.h>
#include <ost/video.h>
#include <ost/audio.h>
#endif
#include "config.h"
#include "video_out.h"
#include "video_out_internal.h"
LIBVO_EXTERN (mpegpes)
int vo_mpegpes_fd=-1;
int vo_mpegpes_fd2=-1;
static vo_info_t vo_info =
{
#ifdef HAVE_DVB
"Mpeg-PES to DVB card",
#else
"Mpeg-PES file",
#endif
"mpegpes",
"A'rpi",
""
};
static uint32_t
config(uint32_t s_width, uint32_t s_height, uint32_t width, uint32_t height, uint32_t fullscreen, char *title, uint32_t format,const vo_tune_info_t *info)
{
#ifdef HAVE_DVB
switch(s_height){
case 288:
case 576:
case 240:
case 480:
break;
default:
mp_msg(MSGT_VO,MSGL_ERR,"DVB: height=%d not supported (try 240/480 (ntsc) or 288/576 (pal)\n",s_height);
return -1;
}
#endif
return 0;
}
static uint32_t preinit(const char *arg){
#ifdef HAVE_DVB
//|O_NONBLOCK
if((vo_mpegpes_fd = open("/dev/ost/video",O_RDWR)) < 0){
perror("DVB VIDEO DEVICE: ");
return -1;
}
if((vo_mpegpes_fd2 = open("/dev/ost/audio",O_RDWR|O_NONBLOCK)) < 0){
perror("DVB AUDIO DEVICE: ");
return -1;
}
if ( (ioctl(vo_mpegpes_fd,VIDEO_SET_BLANK, false) < 0)){
perror("DVB VIDEO SET BLANK: ");
return -1;
}
if ( (ioctl(vo_mpegpes_fd,VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY) < 0)){
perror("DVB VIDEO SELECT SOURCE: ");
return -1;
}
#if 1
if ( (ioctl(vo_mpegpes_fd2,AUDIO_SELECT_SOURCE, AUDIO_SOURCE_MEMORY) < 0)){
perror("DVB AUDIO SELECT SOURCE: ");
return -1;
}
if ( (ioctl(vo_mpegpes_fd2,AUDIO_PLAY) < 0)){
perror("DVB AUDIO PLAY: ");
return -1;
}
#else
if ( (ioctl(vo_mpegpes_fd2,AUDIO_STOP,0) < 0)){
perror("DVB AUDIO STOP: ");
return -1;
}
#endif
if ( (ioctl(vo_mpegpes_fd,VIDEO_PLAY) < 0)){
perror("DVB VIDEO PLAY: ");
return -1;
}
if ( (ioctl(vo_mpegpes_fd2,AUDIO_SET_AV_SYNC, true) < 0)){
perror("DVB AUDIO SET AV SYNC: ");
return -1;
}
if ( (ioctl(vo_mpegpes_fd2,AUDIO_SET_MUTE, false) < 0)){
perror("DVB AUDIO SET MUTE: ");
return -1;
}
#else
vo_mpegpes_fd=open("grab.mpg",O_WRONLY|O_CREAT,0666);
if(vo_mpegpes_fd<0){
perror("vo_mpegpes");
return -1;
}
#endif
return 0;
}
static const vo_info_t*
get_info(void)
{
return &vo_info;
}
static void draw_osd(void)
{
}
static void my_write(unsigned char* data,int len){
#ifdef HAVE_DVB
#define NFD 2
struct pollfd pfd[NFD];
// printf("write %d bytes \n",len);
pfd[0].fd = vo_mpegpes_fd;
pfd[0].events = POLLOUT;
pfd[1].fd = vo_mpegpes_fd2;
pfd[1].events = POLLOUT;
while(len>0){
if (poll(pfd,NFD,1)){
if (pfd[0].revents & POLLOUT){
int ret=write(vo_mpegpes_fd,data,len);
// printf("ret=%d \n",ret);
if(ret<=0){
perror("write");
usleep(0);
} else {
len-=ret; data+=ret;
}
} else usleep(1000);
}
}
#else
write(vo_mpegpes_fd,data,len); // write to file
#endif
}
static unsigned char pes_header[PES_MAX_SIZE];
void send_pes_packet(unsigned char* data,int len,int id,int timestamp){
int ptslen=timestamp?5:1;
// startcode:
pes_header[0]=pes_header[1]=0;
pes_header[2]=id>>8; pes_header[3]=id&255;
while(len>0){
int payload_size=len; // data + PTS
if(6+ptslen+payload_size>PES_MAX_SIZE) payload_size=PES_MAX_SIZE-(6+ptslen);
// construct PES header: (code from ffmpeg's libav)
// packetsize:
pes_header[4]=(ptslen+payload_size)>>8;
pes_header[5]=(ptslen+payload_size)&255;
if(ptslen==5){
int x;
// presentation time stamp:
x=(0x02 << 4) | (((timestamp >> 30) & 0x07) << 1) | 1;
pes_header[6]=x;
x=((((timestamp >> 15) & 0x7fff) << 1) | 1);
pes_header[7]=x>>8; pes_header[8]=x&255;
x=((((timestamp) & 0x7fff) << 1) | 1);
pes_header[9]=x>>8; pes_header[10]=x&255;
} else {
// stuffing and header bits:
pes_header[6]=0x0f;
}
memcpy(&pes_header[6+ptslen],data,payload_size);
my_write(pes_header,6+ptslen+payload_size);
len-=payload_size; data+=payload_size;
ptslen=1; // store PTS only once, at first packet!
}
// printf("PES: draw frame! pts=%d size=%d \n",timestamp,len);
}
void send_lpcm_packet(unsigned char* data,int len,int id,unsigned int timestamp,int freq_id){
int ptslen=timestamp?5:0;
// startcode:
pes_header[0]=pes_header[1]=0;
pes_header[2]=1; pes_header[3]=0xBD;
while(len>=4){
int payload_size;
payload_size=PES_MAX_SIZE-6-20; // max possible data len
if(payload_size>len) payload_size=len;
payload_size&=(~3); // align!
//if(6+payload_size>PES_MAX_SIZE) payload_size=PES_MAX_SIZE-6;
// packetsize:
pes_header[4]=(payload_size+3+ptslen+7)>>8;
pes_header[5]=(payload_size+3+ptslen+7)&255;
// stuffing:
pes_header[6]=0x81;
pes_header[7]=0x80;
// hdrlen:
pes_header[8]=ptslen;
if(ptslen){
int x;
// presentation time stamp:
x=(0x02 << 4) | (((timestamp >> 30) & 0x07) << 1) | 1;
pes_header[9]=x;
x=((((timestamp >> 15) & 0x7fff) << 1) | 1);
pes_header[10]=x>>8; pes_header[11]=x&255;
x=((((timestamp) & 0x7fff) << 1) | 1);
pes_header[12]=x>>8; pes_header[13]=x&255;
}
// ============ LPCM header: (7 bytes) =================
// Info by mocm@convergence.de
// ID:
pes_header[ptslen+9]=id;
// number of frames:
pes_header[ptslen+10]=0x07;
// first acces unit pointer, i.e. start of audio frame:
pes_header[ptslen+11]=0x00;
pes_header[ptslen+12]=0x04;
// audio emphasis on-off 1 bit
// audio mute on-off 1 bit
// reserved 1 bit
// audio frame number 5 bit
pes_header[ptslen+13]=0x0C;
// quantization word length 2 bit
// audio sampling frequency (48khz = 0, 96khz = 1) 2 bit
// reserved 1 bit
// number of audio channels - 1 (e.g. stereo = 1) 3 bit
pes_header[ptslen+14]=1|(freq_id<<4);
// dynamic range control (0x80 if off)
pes_header[ptslen+15]=0x80;
memcpy(&pes_header[6+3+ptslen+7],data,payload_size);
my_write(pes_header,6+3+ptslen+7+payload_size);
len-=payload_size; data+=payload_size;
ptslen=0; // store PTS only once, at first packet!
}
// printf("PES: draw frame! pts=%d size=%d \n",timestamp,len);
}
static uint32_t draw_frame(uint8_t * src[])
{
vo_mpegpes_t *p=(vo_mpegpes_t *)src[0];
send_pes_packet(p->data,p->size,p->id,(p->timestamp>0)?p->timestamp:vo_pts); // video data
return 0;
}
static void flip_page (void)
{
}
static uint32_t draw_slice(uint8_t *srcimg[], int stride[], int w,int h,int x0,int y0)
{
return 0;
}
static uint32_t
query_format(uint32_t format)
{
if(format==IMGFMT_MPEGPES) return 3|VFCAP_TIMER;
return 0;
}
static void
uninit(void)
{
if(vo_mpegpes_fd>=0){ close(vo_mpegpes_fd);vo_mpegpes_fd=-1;}
if(vo_mpegpes_fd2>=0){ close(vo_mpegpes_fd2);vo_mpegpes_fd2=-1;}
}
static void check_events(void)
{
}
static uint32_t control(uint32_t request, void *data, ...)
{
switch (request) {
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
}
return VO_NOTIMPL;
}
Reference in New Issue View Git Blame Copy Permalink