mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 03:15:52 +00:00
49867bd432
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19277 b3059339-0415-0410-9bf9-f77b7e298cf2
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
|
|
/*
|
|
* Common stuff for netstream
|
|
* Packets and so on are defined here along with a few helpers
|
|
* wich are used by both the client and the server
|
|
*
|
|
* Data is always low endian
|
|
*/
|
|
|
|
typedef struct mp_net_stream_packet_st {
|
|
uint16_t len;
|
|
uint8_t cmd;
|
|
char data[0];
|
|
} __attribute__ ((packed)) mp_net_stream_packet_t;
|
|
|
|
#define PACKET_MAX_SIZE 4096
|
|
|
|
// Commands sent by the client
|
|
#define NET_STREAM_OPEN 0
|
|
// data is the url
|
|
#define NET_STREAM_FILL_BUFFER 1
|
|
// data is an uint16 wich is the max len of the data to return
|
|
#define NET_STREAM_SEEK 3
|
|
// data is an uint64 wich the pos where to seek
|
|
#define NET_STREAM_CLOSE 4
|
|
// no data
|
|
#define NET_STREAM_RESET 5
|
|
// no data
|
|
|
|
// Server response
|
|
#define NET_STREAM_OK 128
|
|
// Data returned if open is successful
|
|
typedef struct mp_net_stream_opened_st {
|
|
uint32_t file_format;
|
|
uint32_t flags;
|
|
uint32_t sector_size;
|
|
uint64_t start_pos;
|
|
uint64_t end_pos;
|
|
} __attribute__ ((packed)) mp_net_stream_opened_t;
|
|
// FILL_BUFFER return the data
|
|
// CLOSE return nothing
|
|
#define NET_STREAM_ERROR 129
|
|
// Data is the error message (if any ;)
|
|
|
|
static int net_read(int fd, char* buf, int len) {
|
|
int r = 0;
|
|
while(len) {
|
|
r = recv(fd,buf,len,0);
|
|
if(r <= 0) {
|
|
if(errno == EINTR) continue;
|
|
if(r < 0)
|
|
mp_msg(MSGT_NETST,MSGL_ERR,"Read failed: %s\n",strerror(errno));
|
|
return 0;
|
|
}
|
|
len -= r;
|
|
buf += r;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static mp_net_stream_packet_t* read_packet(int fd) {
|
|
uint16_t len;
|
|
mp_net_stream_packet_t* pack =
|
|
(mp_net_stream_packet_t*)malloc(sizeof(mp_net_stream_packet_t));
|
|
|
|
if(!net_read(fd,(char*)pack,sizeof(mp_net_stream_packet_t))) {
|
|
free(pack);
|
|
return NULL;
|
|
}
|
|
pack->len = le2me_16(pack->len);
|
|
|
|
if(pack->len < sizeof(mp_net_stream_packet_t)) {
|
|
mp_msg(MSGT_NETST,MSGL_WARN,"Got invalid packet (too small: %d)\n",pack->len);
|
|
free(pack);
|
|
return NULL;
|
|
}
|
|
if(pack->len > PACKET_MAX_SIZE) {
|
|
mp_msg(MSGT_NETST,MSGL_WARN,"Got invalid packet (too big: %d)\n",pack->len);
|
|
free(pack);
|
|
return NULL;
|
|
}
|
|
len = pack->len;
|
|
if(len > sizeof(mp_net_stream_packet_t)) {
|
|
pack = realloc(pack,len);
|
|
if(!pack) {
|
|
mp_msg(MSGT_NETST,MSGL_ERR,"Failed to get memory for the packet (%d bytes)\n",len);
|
|
return NULL;
|
|
}
|
|
if(!net_read(fd,pack->data,len - sizeof(mp_net_stream_packet_t)))
|
|
return NULL;
|
|
}
|
|
// printf ("Read packet %d %d %d\n",fd,pack->cmd,pack->len);
|
|
return pack;
|
|
}
|
|
|
|
static int net_write(int fd, char* buf, int len) {
|
|
int w;
|
|
while(len) {
|
|
w = send(fd,buf,len,0);
|
|
if(w <= 0) {
|
|
if(errno == EINTR) continue;
|
|
if(w < 0)
|
|
mp_msg(MSGT_NETST,MSGL_ERR,"Write failed: %s\n",strerror(errno));
|
|
return 0;
|
|
}
|
|
len -= w;
|
|
buf += w;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int write_packet(int fd, uint8_t cmd,char* data,int len) {
|
|
mp_net_stream_packet_t* pack = malloc(len + sizeof(mp_net_stream_packet_t));
|
|
|
|
if(len > 0 && data)
|
|
memcpy(pack->data,data,len);
|
|
pack->len = len + sizeof(mp_net_stream_packet_t);
|
|
pack->cmd = cmd;
|
|
|
|
// printf("Write packet %d %d (%p) %d\n",fd,cmd,data,len);
|
|
pack->len = le2me_16(pack->len);
|
|
if(net_write(fd,(char*)pack,pack->len)) {
|
|
free(pack);
|
|
return 1;
|
|
}
|
|
free(pack);
|
|
return 0;
|
|
}
|
|
|
|
static void net_stream_opened_2_me(mp_net_stream_opened_t* o) {
|
|
o->file_format = le2me_32(o->file_format);
|
|
o->flags = le2me_32(o->flags);
|
|
o->sector_size = le2me_32(o->sector_size);
|
|
o->start_pos = le2me_64(o->start_pos);
|
|
o->end_pos = le2me_64(o->end_pos);
|
|
}
|