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mpv/network.c

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/*
* Network layer for MPlayer
* by Bertrand BAUDET <bertrand_baudet@yahoo.com>
* (C) 2001, MPlayer team.
*/
//#define DUMP2FILE
#include <unistd.h>
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <pthread.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "stream.h"
#include "demuxer.h"
#include "network.h"
#include "http.h"
#include "url.h"
#include "asf.h"
streaming_ctrl_t *streaming_ctrl;
static ASF_StreamType_e streaming_type = ASF_Unknown_e;
Net_Fifo *
net_fifo_new() {
Net_Fifo *net_fifo;
net_fifo = (Net_Fifo*)malloc(sizeof(Net_Fifo));
if( net_fifo==NULL ) {
printf("Memory allocation failed\n");
return NULL;
}
memset( net_fifo, 0, sizeof(Net_Fifo) );
return net_fifo;
}
void
net_fifo_free( Net_Fifo *net_fifo ) {
if( net_fifo->buffer!=NULL ) free( net_fifo->buffer );
free( net_fifo );
}
int
net_fifo_push(Net_Fifo *net_fifo, char *buffer, int length ) {
char *ptr;
if( net_fifo==NULL || buffer==NULL || length<0 ) return -1;
ptr = (char*)malloc(length+net_fifo->length);
if( ptr==NULL ) {
printf("Memory allocation failed\n");
return -1;
}
if( net_fifo->buffer!=NULL ) {
memcpy( ptr, net_fifo->buffer, net_fifo->length );
free( net_fifo->buffer );
}
memcpy( ptr+net_fifo->length, buffer, length );
net_fifo->buffer = ptr;
net_fifo->length += length;
return net_fifo->length;
}
int
net_fifo_pop(Net_Fifo *net_fifo, char *buffer, int length ) {
char *ptr;
int len;
if( net_fifo==NULL || buffer==NULL || length<0 ) return -1;
if( net_fifo->buffer==NULL || net_fifo->length==0 ) return -1;
len = MIN(net_fifo->length, length);
ptr = (char*)malloc(net_fifo->length-len);
if( ptr==NULL ) {
printf("Memory allocation failed\n");
return -1;
}
memcpy( buffer, net_fifo->buffer, len );
if( net_fifo->length-len!=0 ) {
memcpy( ptr, net_fifo->buffer+len, net_fifo->length-len );
free( net_fifo->buffer );
net_fifo->buffer = ptr;
net_fifo->length -= len;
} else {
free( net_fifo->buffer );
net_fifo->buffer = NULL;
net_fifo->length = 0;
}
return len;
}
streaming_ctrl_t *
streaming_ctrl_new( ) {
streaming_ctrl_t *streaming_ctrl;
streaming_ctrl = (streaming_ctrl_t*)malloc(sizeof(streaming_ctrl_t));
if( streaming_ctrl==NULL ) {
printf("Failed to allocate memory\n");
return NULL;
}
memset( streaming_ctrl, 0, sizeof(streaming_ctrl_t) );
streaming_ctrl->buffer = net_fifo_new();
return streaming_ctrl;
}
void
streaming_ctrl_free( streaming_ctrl_t *streaming_ctrl ) {
if( streaming_ctrl==NULL ) return;
if( streaming_ctrl->buffer!=NULL ) net_fifo_free( streaming_ctrl->buffer );
free( streaming_ctrl );
}
int
readFromServer(int fd, char *buffer, int length) {
int ret;
int done=0;
fd_set set;
struct timeval tv;
if( buffer==NULL || length<0 ) return -1;
// fcntl( fd, F_SETFL, fcntl(fd, F_GETFL) & ~O_NONBLOCK );
return read( fd, buffer, length );
do {
tv.tv_sec = 0;
tv.tv_usec = 10000; // 10 milli-seconds timeout
FD_ZERO( &set );
FD_SET( fd, &set );
ret = select( fd+1, &set, NULL, NULL, &tv );
if( ret<0 ) {
perror("select");
} else if( ret==0 ) {
printf("timeout\n");
}
if( FD_ISSET(fd, &set) ) {
ret = read( fd, buffer, length );
if( ret<0 ) {
if( errno!=EINPROGRESS ) {
}
} else {
done = 1;
}
} else {
return -1;
}
} while( !done );
return ret;
}
// Connect to a server using a TCP connection
int
connect2Server(char *host, int port) {
int socket_server_fd;
int err, err_len;
fd_set set;
struct timeval tv;
struct sockaddr_in server_address;
printf("Connecting to server %s:%d ...\n", host, port );
socket_server_fd = socket(AF_INET, SOCK_STREAM, 0);
// fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) | O_NONBLOCK );
if( socket_server_fd==-1 ) {
perror("Failed to create socket");
return -1;
}
if( isalpha(host[0]) ) {
struct hostent *hp =(struct hostent*)gethostbyname( host );
if( hp==NULL ) {
printf("Counldn't resolve name: %s\n", host);
return -1;
}
memcpy( (void*)&server_address.sin_addr.s_addr, (void*)hp->h_addr, hp->h_length );
} else {
inet_pton(AF_INET, host, &server_address.sin_addr);
}
server_address.sin_family=AF_INET;
server_address.sin_port=htons(port);
if( connect( socket_server_fd, (struct sockaddr*)&server_address, sizeof(server_address) )==-1 ) {
if( errno!=EINPROGRESS ) {
perror("Failed to connect to server");
close(socket_server_fd);
return -1;
}
}
tv.tv_sec = 0;
tv.tv_usec = 10000; // 10 milli-seconds timeout
FD_ZERO( &set );
FD_SET( socket_server_fd, &set );
if( select(socket_server_fd+1, NULL, &set, NULL, &tv)>0 ) {
err_len = sizeof( err );
getsockopt( socket_server_fd, SOL_SOCKET, SO_ERROR, &err, &err_len );
if( err ) {
printf("Couldn't connect to host %s\n", host );
printf("Socket error: %d\n", err );
close(socket_server_fd);
return -1;
}
}
return socket_server_fd;
}
int
http_send_request( URL_t *url ) {
HTTP_header_t *http_hdr;
int fd;
http_hdr = http_new_header();
http_set_uri( http_hdr, url->file );
http_set_field( http_hdr, "User-Agent: MPlayer");
http_set_field( http_hdr, "Connection: closed");
if( http_build_request( http_hdr )==NULL ) {
return -1;
}
fd = connect2Server( url->hostname, url->port );
if( fd<0 ) {
return -1;
}
write( fd, http_hdr->buffer, http_hdr->buffer_size );
http_free( http_hdr );
return fd;
}
HTTP_header_t *
http_read_response( int fd ) {
HTTP_header_t *http_hdr;
char response[BUFFER_SIZE];
int i;
http_hdr = http_new_header();
if( http_hdr==NULL ) {
return NULL;
}
do {
i = readFromServer( fd, response, BUFFER_SIZE );
if( i<0 ) {
printf("Read failed\n");
}
http_response_append( http_hdr, response, i );
} while( !http_is_header_entired( http_hdr ) );
http_response_parse( http_hdr );
return http_hdr;
}
// By using the protocol, the extension of the file or the content-type
// we might be able to guess the streaming type.
int
autodetectProtocol(URL_t *url, int *fd_out) {
HTTP_header_t *http_hdr;
int fd=-1;
int i;
int redirect;
char *extension;
char *content_type;
char *next_url;
char response[1024];
do {
*fd_out=-1;
next_url = NULL;
extension = NULL;
content_type = NULL;
redirect = 0;
if( url==NULL ) return DEMUXER_TYPE_UNKNOWN;
// Get the extension of the file if present
if( url->file!=NULL ) {
for( i=strlen(url->file) ; i>0 ; i-- ) {
if( url->file[i]=='.' ) {
extension=(url->file)+i+1;
break;
}
}
}
// extension=NULL;
if( extension!=NULL ) {
printf("Extension: %s\n", extension );
if( !strcasecmp(extension, "asf") ||
!strcasecmp(extension, "wmv") ||
!strcasecmp(extension, "asx") ) {
if( url->port==0 ) url->port = 80;
return DEMUXER_TYPE_ASF;
}
if( !strcasecmp(extension, "mpg") ||
!strcasecmp(extension, "mpeg") ) {
if( url->port==0 ) url->port = 80;
return DEMUXER_TYPE_MPEG_PS;
}
if( !strcasecmp(extension, "avi") ) {
if( url->port==0 ) url->port = 80;
return DEMUXER_TYPE_AVI;
}
}
// Checking for RTSP
if( !strcasecmp(url->protocol, "rtsp") ) {
printf("RTSP protocol not yet implemented!\n");
return DEMUXER_TYPE_UNKNOWN;
}
// Checking for ASF
if( !strcasecmp(url->protocol, "mms") ) {
if( url->port==0 ) url->port = 80;
return DEMUXER_TYPE_ASF;
}
// HTTP based protocol
if( !strcasecmp(url->protocol, "http") ) {
if( url->port==0 ) url->port = 80;
fd = http_send_request( url );
if( fd<0 ) {
*fd_out=-1;
return DEMUXER_TYPE_UNKNOWN;
}
http_hdr = http_read_response( fd );
if( http_hdr==NULL ) {
close( fd );
*fd_out=-1;
return DEMUXER_TYPE_UNKNOWN;
}
*fd_out=fd;
//http_debug_hdr( http_hdr );
// Check if the response is an ICY status_code reason_phrase
if( !strcasecmp(http_hdr->protocol, "ICY") ) {
// Ok, we have detected an mp3 streaming
return DEMUXER_TYPE_MPEG_PS;
}
switch( http_hdr->status_code ) {
case 200: // OK
// Look if we can use the Content-Type
content_type = http_get_field( http_hdr, "Content-Type" );
if( content_type!=NULL ) {
printf("Content-Type: [%s]\n", content_type );
printf("Content-Length: [%s]\n", http_get_field(http_hdr, "Content-Length") );
// Check for ASF
if( asf_http_streaming_type(content_type, NULL)!=ASF_Unknown_e ) {
return DEMUXER_TYPE_ASF;
}
// Check for MP3 streaming
// Some MP3 streaming server answer with audio/mpeg
if( !strcasecmp(content_type, "audio/mpeg") ) {
return DEMUXER_TYPE_MPEG_PS;
}
// Check for MPEG streaming
if( !strcasecmp(content_type, "video/mpeg") ) {
return DEMUXER_TYPE_MPEG_PS;
}
// AVI ??? => video/x-msvideo
if( !strcasecmp(content_type, "video/x-msvideo") ) {
return DEMUXER_TYPE_AVI;
}
}
break;
// Redirect
case 301: // Permanently
case 302: // Temporarily
// TODO: RFC 2616, recommand to detect infinite redirection loops
next_url = http_get_field( http_hdr, "Location" );
if( next_url!=NULL ) {
close( fd );
url_free( url );
url = url_new( next_url );
redirect = 1;
}
break;
default:
printf("Server returned %d: %s\n", http_hdr->status_code, http_hdr->reason_phrase );
close( fd );
*fd_out=-1;
return DEMUXER_TYPE_UNKNOWN;
}
}
} while( redirect );
return DEMUXER_TYPE_UNKNOWN;
}
int
nop_streaming_read( streaming_ctrl_t *streaming_ctrl ) {
char *buffer;
int len;
if( streaming_ctrl==NULL ) return -1;
len = streaming_ctrl->buffer->length;
if( len==0 ) return 0;
buffer = (char*)malloc( len );
if( buffer==NULL ) {
printf("Memory allocation failed\n");
return -1;
}
net_fifo_pop( streaming_ctrl->buffer, buffer, len );
write( streaming_ctrl->fd_pipe_in, buffer, len );
free( buffer );
return len;
}
int
nop_streaming_start( streaming_ctrl_t *streaming_ctrl ) {
HTTP_header_t *http_hdr;
int fd;
if( streaming_ctrl==NULL ) return -1;
fd = streaming_ctrl->fd_net;
if( fd<0 ) {
fd = http_send_request( *(streaming_ctrl->url) );
if( fd<0 ) return -1;
http_hdr = http_read_response( fd );
if( http_hdr==NULL ) return -1;
switch( http_hdr->status_code ) {
case 200: // OK
printf("Content-Type: [%s]\n", http_get_field(http_hdr, "Content-Type") );
printf("Content-Length: [%s]\n", http_get_field(http_hdr, "Content-Length") );
if( http_hdr->body_size>0 ) {
write( streaming_ctrl->fd_pipe_in, http_hdr->body, http_hdr->body_size );
}
break;
default:
printf("Server return %d: %s\n", http_hdr->status_code, http_hdr->reason_phrase );
close( fd );
fd = -1;
}
streaming_ctrl->fd_net = fd;
}
http_free( http_hdr );
streaming_ctrl->streaming_read = nop_streaming_read;
streaming_ctrl->prebuffer_size = 180000;
// streaming_ctrl->prebuffer_size = 0;
streaming_ctrl->buffering = 1;
// streaming_ctrl->buffering = 0;
streaming_ctrl->status = streaming_playing_e;
return fd;
}
void
network_streaming(void *arg) {
char buffer[BUFFER_SIZE];
fd_set fd_net_in;
int ret;
arg = arg;
do {
FD_ZERO( &fd_net_in );
FD_SET( streaming_ctrl->fd_net, &fd_net_in );
ret = select( streaming_ctrl->fd_net+1, &fd_net_in, NULL, NULL, NULL );
if( ret<0 ) {
perror("select");
exit(1);
}
if( FD_ISSET( streaming_ctrl->fd_net, &fd_net_in ) ) {
ret = readFromServer( streaming_ctrl->fd_net, buffer, BUFFER_SIZE );
if( ret<=0 ) {
streaming_ctrl->status=streaming_stopped_e;
} else {
//printf(" push: 0x%02X\n", *((unsigned int*)buffer) );
net_fifo_push( streaming_ctrl->buffer, buffer, ret );
if( !streaming_ctrl->buffering ) {
do {
ret = streaming_ctrl->streaming_read( streaming_ctrl );
if( ret<0 && streaming_ctrl->buffer->length<streaming_ctrl->prebuffer_size ) {
// Need buffering
streaming_ctrl->buffering = 1;
}
} while( streaming_ctrl->buffer->length>streaming_ctrl->prebuffer_size );
} else {
if( streaming_ctrl->buffer->length>streaming_ctrl->prebuffer_size ) {
streaming_ctrl->buffering = 0;
printf("\n");
} else {
printf(" Buffering: %d \%\r", (int)((float)(((float)streaming_ctrl->buffer->length)/((float)streaming_ctrl->prebuffer_size))*100) );
fflush(stdout);
}
}
}
} else {
printf("Network fd not set\n");
}
} while( streaming_ctrl->status==streaming_playing_e );
// Flush the buffer
while( streaming_ctrl->buffer->length>0 ) {
ret = streaming_ctrl->streaming_read( streaming_ctrl );
if( ret<0 ) break;
}
printf("Network thread done\n");
// Close to the pipe to stop mplayer.
close( streaming_ctrl->fd_pipe_in );
}
int
streaming_start(URL_t **url, int fd, int streaming_type) {
int fd_pipe[2];
// Open the pipe
if( pipe(fd_pipe)<0 ) {
printf("Pipe creation failed\n");
return -1;
}
streaming_ctrl = streaming_ctrl_new( );
if( streaming_ctrl==NULL ) {
return -1;
}
streaming_ctrl->url = url;
streaming_ctrl->fd_pipe_in = fd_pipe[1];
streaming_ctrl->fd_net = fd;
#ifdef DUMP2FILE
{
int fd_file;
fd_file = open("dump.stream", O_WRONLY | O_CREAT );
if( fd_file<0 ) {
perror("open");
}
streaming_ctrl->fd_pipe_in = fd_file;
}
#endif
switch( streaming_type ) {
case DEMUXER_TYPE_ASF:
// Send the appropriate HTTP request
fd = asf_http_streaming_start( streaming_ctrl );
break;
case DEMUXER_TYPE_AVI:
case DEMUXER_TYPE_MPEG_ES:
case DEMUXER_TYPE_MPEG_PS:
fd = nop_streaming_start( streaming_ctrl );
break;
case DEMUXER_TYPE_UNKNOWN:
default:
printf("Unable to detect the streaming type\n");
close( fd );
free( streaming_ctrl );
return -1;
}
if( fd<0 ) {
free( streaming_ctrl );
return -1;
}
// Start the network thread
if( pthread_create( &(streaming_ctrl->thread_id), NULL , (void*)network_streaming, (void*)NULL)<0 ) {
printf("Unable to start the network thread.\n");
close( fd );
free( streaming_ctrl );
return -1;
}
printf("Network thread created with id: %d\n", streaming_ctrl->thread_id );
// streaming_ctrl->status = streaming_stopped_e;
// return fd;
return fd_pipe[0];
}
int
streaming_stop( ) {
streaming_ctrl->status = streaming_stopped_e;
return 0;
}