vcd_read_darwin.h

自己移植的linux下的流媒体播放器原代码,支持mms协议,支持ftp和http协议.

#include <sys/types.h>
#include <CoreFoundation/CFBase.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/storage/IOCDTypes.h>
#include <IOKit/storage/IOCDMedia.h>
#include <IOKit/storage/IOCDMediaBSDClient.h>

//=================== VideoCD ==========================
#define	CDROM_LEADOUT	0xAA

typedef struct
{
	uint8_t sync            [12];
	uint8_t header          [4];
	uint8_t subheader       [8];
	uint8_t data            [2324];
	uint8_t spare           [4];
} cdsector_t;

typedef struct mp_vcd_priv_st
{
	int fd;
	dk_cd_read_track_info_t entry;
	CDMSF msf;
	cdsector_t buf;
} mp_vcd_priv_t;

static inline void vcd_set_msf(mp_vcd_priv_t* vcd, unsigned int sect)
{
  vcd->msf.frame=sect%75;
  sect=sect/75;
  vcd->msf.second=sect%60;
  sect=sect/60;
  vcd->msf.minute=sect;
}

static inline unsigned int vcd_get_msf(mp_vcd_priv_t* vcd)
{
  return vcd->msf.frame +
        (vcd->msf.second+
         vcd->msf.minute*60)*75;

return 0;
}

int vcd_seek_to_track(mp_vcd_priv_t* vcd, int track)
{
	dk_cd_read_track_info_t tocentry;
	struct CDTrackInfo entry;

	memset( &vcd->entry, 0, sizeof(vcd->entry));
	vcd->entry.addressType = kCDTrackInfoAddressTypeTrackNumber;
	vcd->entry.address = track;
	vcd->entry.bufferLength = sizeof(entry);
	vcd->entry.buffer = &entry;
  
	if (ioctl(vcd->fd, DKIOCCDREADTRACKINFO, &vcd->entry))
	{
		mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif1: %s\n",strerror(errno));
		return -1;
	}
	return VCD_SECTOR_DATA*vcd_get_msf(vcd);
  
return -1;
}

int vcd_get_track_end(mp_vcd_priv_t* vcd, int track)
{
	dk_cd_read_disc_info_t tochdr;
	struct CDDiscInfo hdr;
	
	dk_cd_read_track_info_t tocentry;
	struct CDTrackInfo entry;
	
	//read toc header
    memset(&tochdr, 0, sizeof(tochdr));
    tochdr.buffer = &hdr;
    tochdr.bufferLength = sizeof(hdr);
  
    if (ioctl(vcd->fd, DKIOCCDREADDISCINFO, &tochdr) < 0)
	{
		mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
		return NULL;
    }
	
	//read track info
	memset( &vcd->entry, 0, sizeof(vcd->entry));
	vcd->entry.addressType = kCDTrackInfoAddressTypeTrackNumber;
	vcd->entry.address = track<(hdr.lastTrackNumberInLastSessionLSB+1)?(track):CDROM_LEADOUT;
	vcd->entry.bufferLength = sizeof(entry);
	vcd->entry.buffer = &entry;
  
	if (ioctl(vcd->fd, DKIOCCDREADTRACKINFO, &vcd->entry))
	{
		mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif2: %s\n",strerror(errno));
		return -1;
	}
	return VCD_SECTOR_DATA*vcd_get_msf(vcd);

return -1;
}

mp_vcd_priv_t* vcd_read_toc(int fd)
{
	dk_cd_read_disc_info_t tochdr;
	struct CDDiscInfo hdr;
	
	dk_cd_read_track_info_t tocentry;
	struct CDTrackInfo entry;
	CDMSF trackMSF;
	
	mp_vcd_priv_t* vcd;
	int i;
  
	//read toc header
    memset(&tochdr, 0, sizeof(tochdr));
    tochdr.buffer = &hdr;
    tochdr.bufferLength = sizeof(hdr);
  
    if (ioctl(fd, DKIOCCDREADDISCINFO, &tochdr) < 0)
	{
		mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
		return NULL;
    }
	
	//print all track info
	for (i=hdr.firstTrackNumberInLastSessionLSB ; i<=hdr.lastTrackNumberInLastSessionLSB ; i++)
	{
		memset( &tocentry, 0, sizeof(tocentry));
		tocentry.addressType = kCDTrackInfoAddressTypeTrackNumber;
		tocentry.address = i;
		tocentry.bufferLength = sizeof(entry);
		tocentry.buffer = &entry;

		if (ioctl(fd,DKIOCCDREADTRACKINFO,&tocentry)==-1)
		{
			mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc entry: %s\n",strerror(errno));
			return NULL;
		}
		
		trackMSF = CDConvertLBAToMSF(entry.trackStartAddress);
        
		//mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d:  adr=%d  ctrl=%d  format=%d  %02d:%02d:%02d\n",
		mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d: format=%d  %02d:%02d:%02d\n",
          (int)tocentry.address,
          //(int)tocentry.entry.addr_type,
          //(int)tocentry.entry.control,
          (int)tocentry.addressType,
          (int)trackMSF.minute,
          (int)trackMSF.second,
          (int)trackMSF.frame
		);
	}
 
	vcd = malloc(sizeof(mp_vcd_priv_t));
	vcd->fd = fd;
	vcd->msf = trackMSF;
	return vcd;

	return NULL;
}

static int vcd_read(mp_vcd_priv_t* vcd,char *mem)
{
	if (pread(vcd->fd,&vcd->buf,VCD_SECTOR_SIZE,vcd_get_msf(vcd)*VCD_SECTOR_SIZE) != VCD_SECTOR_SIZE)
		return 0;  // EOF?

	vcd->msf.frame++;
	if (vcd->msf.frame==75)
	{
		vcd->msf.frame=0;
		vcd->msf.second++;
        
		if (vcd->msf.second==60)
		{
			vcd->msf.second=0;
			vcd->msf.minute++;
        }
      }
	  
      memcpy(mem,vcd->buf.data,VCD_SECTOR_DATA);
      return VCD_SECTOR_DATA;
return 0;
}