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mpv/stream/pnm.c
Uoti Urpala fc6a9e4a3e build: switch to libavutil bswap.h and intreadwrite.h 
Remove the private bswap and intreadwrite.h implementations and use
libavutil headers instead.

Originally these headers weren't publicly installed by libavutil at
all. That already changed in 2010, but the pure C bswap version in
installed headers was very inefficient. That was recently (2011-12)
improved and now using the public bswap version probably shouldn't
cause noticeable performance problems, at least if using a new enough
compiler.
2012-02-01 22:46:27 +02:00

875 lines
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/*
* Copyright (C) 2000-2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* xine is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*
* pnm protocol implementation
* based upon code from joschka
*/
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/time.h>
#include <inttypes.h>
#include <libavutil/intreadwrite.h>
#include "config.h"
#if !HAVE_WINSOCK2_H
#include <sys/socket.h>
//#include <netinet/in.h>
//#include <netdb.h>
#else
#include <winsock2.h>
#endif
#include "stream.h"
#include "libmpdemux/demuxer.h"
#include "osdep/timer.h"
#include "network.h"
#include "pnm.h"
#include "tcp.h"
//#include "libreal/rmff.h"
extern int network_bandwidth;
#define FOURCC_TAG( ch0, ch1, ch2, ch3 ) \
(((long)(unsigned char)(ch3) ) | \
( (long)(unsigned char)(ch2) << 8 ) | \
( (long)(unsigned char)(ch1) << 16 ) | \
( (long)(unsigned char)(ch0) << 24 ) )
#define RMF_TAG FOURCC_TAG('.', 'R', 'M', 'F')
#define PROP_TAG FOURCC_TAG('P', 'R', 'O', 'P')
#define MDPR_TAG FOURCC_TAG('M', 'D', 'P', 'R')
#define CONT_TAG FOURCC_TAG('C', 'O', 'N', 'T')
#define DATA_TAG FOURCC_TAG('D', 'A', 'T', 'A')
#define INDX_TAG FOURCC_TAG('I', 'N', 'D', 'X')
#define PNA_TAG FOURCC_TAG('P', 'N', 'A', 0 )
/*
#define LOG
*/
#define BUF_SIZE 4096
#define HEADER_SIZE 4096
struct pnm_s {
int s;
// char *host;
// int port;
char *path;
// char *url;
char buffer[BUF_SIZE]; /* scratch buffer */
/* receive buffer */
uint8_t recv[BUF_SIZE];
int recv_size;
int recv_read;
uint8_t header[HEADER_SIZE];
int header_len;
int header_read;
unsigned int seq_num[4]; /* two streams with two indices */
unsigned int seq_current[2]; /* seqs of last stream chunk read */
uint32_t ts_current; /* timestamp of current chunk */
uint32_t ts_last[2]; /* timestamps of last chunks */
unsigned int packet; /* number of last recieved packet */
};
/* sizes */
#define PREAMBLE_SIZE 8
#define CHECKSUM_SIZE 3
/* header of rm files */
static const unsigned char rm_header[]={
0x2e, 0x52, 0x4d, 0x46, /* object_id ".RMF" */
0x00, 0x00, 0x00, 0x12, /* header_size 0x12 */
0x00, 0x00, /* object_version 0x00 */
0x00, 0x00, 0x00, 0x00, /* file_version 0x00 */
0x00, 0x00, 0x00, 0x06 /* num_headers 0x06 */
};
/* data chunk header */
static const unsigned char pnm_data_header[]={
'D','A','T','A',
0,0,0,0, /* data chunk size */
0,0, /* object version */
0,0,0,0, /* num packets */
0,0,0,0}; /* next data header */
/* pnm request chunk ids */
#define PNA_CLIENT_CAPS 0x03
#define PNA_CLIENT_CHALLANGE 0x04
#define PNA_BANDWIDTH 0x05
#define PNA_GUID 0x13
#define PNA_TIMESTAMP 0x17
#define PNA_TWENTYFOUR 0x18
#define PNA_CLIENT_STRING 0x63
#define PNA_PATH_REQUEST 0x52
static const unsigned char pnm_challenge[] = "0990f6b4508b51e801bd6da011ad7b56";
static const unsigned char pnm_timestamp[] = "[15/06/1999:22:22:49 00:00]";
static const unsigned char pnm_guid[] = "3eac2411-83d5-11d2-f3ea-d7c3a51aa8b0";
static const unsigned char pnm_response[] = "97715a899cbe41cee00dd434851535bf";
static const unsigned char client_string[] = "WinNT_9.0_6.0.6.45_plus32_MP60_en-US_686l";
static const unsigned char pnm_header[] = {
'P','N','A',
0x00, 0x0a,
0x00, 0x14,
0x00, 0x02,
0x00, 0x01 };
static const unsigned char pnm_client_caps[] = {
0x07, 0x8a, 'p','n','r','v',
0, 0x90, 'p','n','r','v',
0, 0x64, 'd','n','e','t',
0, 0x46, 'p','n','r','v',
0, 0x32, 'd','n','e','t',
0, 0x2b, 'p','n','r','v',
0, 0x28, 'd','n','e','t',
0, 0x24, 'p','n','r','v',
0, 0x19, 'd','n','e','t',
0, 0x18, 'p','n','r','v',
0, 0x14, 's','i','p','r',
0, 0x14, 'd','n','e','t',
0, 0x24, '2','8','_','8',
0, 0x12, 'p','n','r','v',
0, 0x0f, 'd','n','e','t',
0, 0x0a, 's','i','p','r',
0, 0x0a, 'd','n','e','t',
0, 0x08, 's','i','p','r',
0, 0x06, 's','i','p','r',
0, 0x12, 'l','p','c','J',
0, 0x07, '0','5','_','6' };
static const uint32_t pnm_default_bandwidth=10485800;
static const uint32_t pnm_available_bandwidths[]={14400,19200,28800,33600,34430,57600,
115200,262200,393216,524300,1544000,10485800};
static const unsigned char pnm_twentyfour[]={
0xd5, 0x42, 0xa3, 0x1b, 0xef, 0x1f, 0x70, 0x24,
0x85, 0x29, 0xb3, 0x8d, 0xba, 0x11, 0xf3, 0xd6 };
/* now other data follows. marked with 0x0000 at the beginning */
static const unsigned char after_chunks[]={
0x00, 0x00, /* mark */
0x50, 0x84, /* seems to be fixated */
0x1f, 0x3a /* varies on each request (checksum ?)*/
};
static void hexdump (char *buf, int length);
static int rm_write(int s, const char *buf, int len) {
int total, timeout;
total = 0; timeout = 30;
while (total < len){
int n;
n = send (s, &buf[total], len - total, 0);
if (n > 0)
total += n;
else if (n < 0) {
#if !HAVE_WINSOCK2_H
if (timeout>0 && (errno == EAGAIN || errno == EINPROGRESS)) {
#else
if (timeout>0 && (errno == EAGAIN || WSAGetLastError() == WSAEINPROGRESS)) {
#endif
usec_sleep (1000000); timeout--;
} else
return -1;
}
}
return total;
}
static ssize_t rm_read(int fd, void *buf, size_t count) {
ssize_t ret, total;
total = 0;
while (total < count) {
fd_set rset;
struct timeval timeout;
FD_ZERO (&rset);
FD_SET (fd, &rset);
timeout.tv_sec = 3;
timeout.tv_usec = 0;
if (select (fd+1, &rset, NULL, NULL, &timeout) <= 0) {
return -1;
}
ret=recv (fd, ((uint8_t*)buf)+total, count-total, 0);
if (ret<=0) {
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: read error.\n");
return ret;
} else
total += ret;
}
return total;
}
/*
* debugging utilities
*/
static void hexdump (char *buf, int length) {
int i;
mp_msg(MSGT_OPEN, MSGL_INFO, "input_pnm: ascii>");
for (i = 0; i < length; i++) {
unsigned char c = buf[i];
if (c >= 32 && c <= 128)
mp_msg(MSGT_OPEN, MSGL_INFO, "%c", c);
else
mp_msg(MSGT_OPEN, MSGL_INFO, ".");
}
mp_msg(MSGT_OPEN, MSGL_INFO, "\n");
mp_msg(MSGT_OPEN, MSGL_INFO, "input_pnm: hexdump> ");
for (i = 0; i < length; i++) {
unsigned char c = buf[i];
mp_msg(MSGT_OPEN, MSGL_INFO, "%02x", c);
if ((i % 16) == 15)
mp_msg(MSGT_OPEN, MSGL_INFO, "\npnm: ");
if ((i % 2) == 1)
mp_msg(MSGT_OPEN, MSGL_INFO, " ");
}
mp_msg(MSGT_OPEN, MSGL_INFO, "\n");
}
/*
* pnm_get_chunk gets a chunk from stream
* and returns number of bytes read
*/
static int pnm_get_chunk(pnm_t *p,
unsigned int max,
unsigned int *chunk_type,
char *data, int *need_response) {
unsigned int chunk_size;
unsigned int n;
char *ptr;
if (max < PREAMBLE_SIZE)
return -1;
/* get first PREAMBLE_SIZE bytes and ignore checksum */
rm_read (p->s, data, CHECKSUM_SIZE);
if (data[0] == 0x72)
rm_read (p->s, data, PREAMBLE_SIZE);
else
rm_read (p->s, data+CHECKSUM_SIZE, PREAMBLE_SIZE-CHECKSUM_SIZE);
max -= PREAMBLE_SIZE;
*chunk_type = AV_RB32(data);
chunk_size = AV_RB32(data+4);
switch (*chunk_type) {
case PNA_TAG:
*need_response=0;
ptr=data+PREAMBLE_SIZE;
if (max < 1)
return -1;
rm_read (p->s, ptr++, 1);
max -= 1;
while(1) {
/* expecting following chunk format: 0x4f <chunk size> <data...> */
if (max < 2)
return -1;
rm_read (p->s, ptr, 2);
max -= 2;
if (*ptr == 'X') /* checking for server message */
{
mp_msg(MSGT_OPEN, MSGL_WARN, "input_pnm: got a message from server:\n");
if (max < 1)
return -1;
rm_read (p->s, ptr+2, 1);
max = -1;
n=AV_RB16(ptr+1);
if (max < n)
return -1;
rm_read (p->s, ptr+3, n);
max -= n;
ptr[3+n]=0;
mp_msg(MSGT_OPEN, MSGL_WARN, "%s\n",ptr+3);
return -1;
}
if (*ptr == 'F') /* checking for server error */
{
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: server error.\n");
return -1;
}
if (*ptr == 'i')
{
ptr+=2;
*need_response=1;
continue;
}
if (*ptr != 0x4f) break;
n=ptr[1];
if (max < n)
return -1;
rm_read (p->s, ptr+2, n);
max -= n;
ptr+=(n+2);
}
/* the checksum of the next chunk is ignored here */
if (max < 1)
return -1;
rm_read (p->s, ptr+2, 1);
ptr+=3;
chunk_size=ptr-data;
break;
case RMF_TAG:
case DATA_TAG:
case PROP_TAG:
case MDPR_TAG:
case CONT_TAG:
if (chunk_size > max || chunk_size < PREAMBLE_SIZE) {
mp_msg(MSGT_OPEN, MSGL_ERR, "error: max chunk size exceeded (max was 0x%04x)\n", max);
#ifdef LOG
n=rm_read (p->s, &data[PREAMBLE_SIZE], 0x100 - PREAMBLE_SIZE);
hexdump(data,n+PREAMBLE_SIZE);
#endif
return -1;
}
rm_read (p->s, &data[PREAMBLE_SIZE], chunk_size-PREAMBLE_SIZE);
break;
default:
*chunk_type = 0;
chunk_size = PREAMBLE_SIZE;
break;
}
return chunk_size;
}
/*
* writes a chunk to a buffer, returns number of bytes written
*/
static int pnm_write_chunk(uint16_t chunk_id, uint16_t length,
const char *chunk, char *data) {
AV_WB16(&data[0], chunk_id);
AV_WB16(&data[2], length);
memcpy(&data[4],chunk,length);
return length+4;
}
/*
* constructs a request and sends it
*/
static void pnm_send_request(pnm_t *p, uint32_t bandwidth) {
int c=sizeof(pnm_header);
char fixme[]={0,1};
memcpy(p->buffer,pnm_header,sizeof(pnm_header));
c+=pnm_write_chunk(PNA_CLIENT_CHALLANGE,strlen(pnm_challenge),
pnm_challenge,&p->buffer[c]);
c+=pnm_write_chunk(PNA_CLIENT_CAPS,sizeof(pnm_client_caps),
pnm_client_caps,&p->buffer[c]);
c+=pnm_write_chunk(0x0a,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x0c,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x0d,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x16,2,fixme,&p->buffer[c]);
c+=pnm_write_chunk(PNA_TIMESTAMP,strlen(pnm_timestamp),
pnm_timestamp,&p->buffer[c]);
c+=pnm_write_chunk(PNA_BANDWIDTH,4,
(const char *)&pnm_default_bandwidth,&p->buffer[c]);
c+=pnm_write_chunk(0x08,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x0e,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x0f,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x11,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x10,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x15,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(0x12,0,NULL,&p->buffer[c]);
c+=pnm_write_chunk(PNA_GUID,strlen(pnm_guid),
pnm_guid,&p->buffer[c]);
c+=pnm_write_chunk(PNA_TWENTYFOUR,sizeof(pnm_twentyfour),
pnm_twentyfour,&p->buffer[c]);
/* data after chunks */
memcpy(&p->buffer[c],after_chunks,sizeof(after_chunks));
c+=sizeof(after_chunks);
/* client id string */
p->buffer[c]=PNA_CLIENT_STRING;
AV_WB16(&p->buffer[c+1], strlen(client_string)-1); /* don't know why do we have -1 here */
memcpy(&p->buffer[c+3],client_string,strlen(client_string)+1);
c=c+3+strlen(client_string)+1;
/* file path */
p->buffer[c]=0;
p->buffer[c+1]=PNA_PATH_REQUEST;
AV_WB16(&p->buffer[c+2], strlen(p->path));
memcpy(&p->buffer[c+4],p->path,strlen(p->path));
c=c+4+strlen(p->path);
/* some trailing bytes */
p->buffer[c]='y';
p->buffer[c+1]='B';
rm_write(p->s,p->buffer,c+2);
}
/*
* pnm_send_response sends a response of a challenge
*/
static void pnm_send_response(pnm_t *p, const char *response) {
int size=strlen(response);
p->buffer[0]=0x23;
p->buffer[1]=0;
p->buffer[2]=(unsigned char) size;
memcpy(&p->buffer[3], response, size);
rm_write (p->s, p->buffer, size+3);
}
/*
* get headers and challenge and fix headers
* write headers to p->header
* write challenge to p->buffer
*
* return 0 on error. != 0 on success
*/
static int pnm_get_headers(pnm_t *p, int *need_response) {
uint32_t chunk_type;
uint8_t *ptr=p->header;
uint8_t *prop_hdr=NULL;
int chunk_size,size=0;
int nr = 0;
/* rmff_header_t *h; */
*need_response=0;
while(1) {
if (HEADER_SIZE-size<=0)
{
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: header buffer overflow. exiting\n");
return 0;
}
chunk_size=pnm_get_chunk(p,HEADER_SIZE-size,&chunk_type,ptr,&nr);
if (chunk_size < 0) return 0;
if (chunk_type == 0) break;
if (chunk_type == PNA_TAG)
{
memcpy(ptr, rm_header, sizeof(rm_header));
chunk_size=sizeof(rm_header);
*need_response=nr;
}
if (chunk_type == DATA_TAG)
chunk_size=0;
if (chunk_type == RMF_TAG)
chunk_size=0;
if (chunk_type == PROP_TAG)
prop_hdr=ptr;
size+=chunk_size;
ptr+=chunk_size;
}
if (!prop_hdr) {
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: error while parsing headers.\n");
return 0;
}
/* set data offset */
AV_WB32(&prop_hdr[42], size - 1);
/* read challenge */
memcpy (p->buffer, ptr, PREAMBLE_SIZE);
rm_read (p->s, &p->buffer[PREAMBLE_SIZE], 64);
/* now write a data header */
memcpy(ptr, pnm_data_header, sizeof(pnm_data_header));
size+=sizeof(pnm_data_header);
/*
h=rmff_scan_header(p->header);
rmff_fix_header(h);
p->header_len=rmff_get_header_size(h);
rmff_dump_header(h, p->header, HEADER_SIZE);
*/
p->header_len=size;
return 1;
}
/*
* determine correct stream number by looking at indices
*/
static int pnm_calc_stream(pnm_t *p) {
char str0=0,str1=0;
/* looking at the first index to
* find possible stream types
*/
if (p->seq_current[0]==p->seq_num[0]) str0=1;
if (p->seq_current[0]==p->seq_num[2]) str1=1;
switch (str0+str1) {
case 1: /* one is possible, good. */
if (str0)
{
p->seq_num[0]++;
p->seq_num[1]=p->seq_current[1]+1;
return 0;
} else
{
p->seq_num[2]++;
p->seq_num[3]=p->seq_current[1]+1;
return 1;
}
break;
case 0:
case 2: /* both types or none possible, not so good */
/* try to figure out by second index */
if ( p->seq_current[1] == p->seq_num[1]
&& p->seq_current[1] != p->seq_num[3])
{
/* ok, only stream0 matches */
p->seq_num[0]=p->seq_current[0]+1;
p->seq_num[1]++;
return 0;
}
if ( p->seq_current[1] == p->seq_num[3]
&& p->seq_current[1] != p->seq_num[1])
{
/* ok, only stream1 matches */
p->seq_num[2]=p->seq_current[0]+1;
p->seq_num[3]++;
return 1;
}
/* wow, both streams match, or not. */
/* now we try to decide by timestamps */
if (p->ts_current < p->ts_last[1])
return 0;
if (p->ts_current < p->ts_last[0])
return 1;
/* does not help, we guess type 0 */
#ifdef LOG
mp_msg(MSGT_OPEN, MSGL_INFO, "guessing stream# 0\n");
#endif
p->seq_num[0]=p->seq_current[0]+1;
p->seq_num[1]=p->seq_current[1]+1;
return 0;
break;
}
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: wow, something very nasty happened in pnm_calc_stream\n");
return 2;
}
/*
* gets a stream chunk and writes it to a recieve buffer
*/
static int pnm_get_stream_chunk(pnm_t *p) {
int n;
char keepalive='!';
unsigned int fof1, fof2, stream;
/* send a keepalive */
/* realplayer seems to do that every 43th package */
if (p->packet%43 == 42)
rm_write(p->s,&keepalive,1);
/* data chunks begin with: 'Z' <o> <o> <i1> 'Z' <i2>
* where <o> is the offset to next stream chunk,
* <i1> is a 16 bit index
* <i2> is a 8 bit index which counts from 0x10 to somewhere
*/
n = rm_read (p->s, p->buffer, 8);
if (n<0) return -1;
if (n<8) return 0;
/* skip 8 bytes if 0x62 is read */
if (p->buffer[0] == 0x62)
{
n = rm_read (p->s, p->buffer, 8);
if (n<8) return 0;
#ifdef LOG
mp_msg(MSGT_OPEN, MSGL_WARN, "input_pnm: had to seek 8 bytes on 0x62\n");
#endif
}
/* a server message */
if (p->buffer[0] == 'X')
{
int size=AV_RB16(&p->buffer[1]);
rm_read (p->s, &p->buffer[8], size-5);
p->buffer[size+3]=0;
mp_msg(MSGT_OPEN, MSGL_WARN, "input_pnm: got message from server while reading stream:\n%s\n", &p->buffer[3]);
return -1;
}
if (p->buffer[0] == 'F')
{
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: server error.\n");
return -1;
}
/* skip bytewise to next chunk.
* seems, that we don't need that, if we send enough
* keepalives
*/
n=0;
while (p->buffer[0] != 0x5a) {
int i;
for (i=1; i<8; i++)
p->buffer[i-1]=p->buffer[i];
rm_read (p->s, &p->buffer[7], 1);
n++;
}
#ifdef LOG
if (n) mp_msg(MSGT_OPEN, MSGL_WARN, "input_pnm: had to seek %i bytes to next chunk\n", n);
#endif
/* check for 'Z's */
if (p->buffer[0] != 0x5a || p->buffer[7] != 0x5a)
{
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: bad boundaries\n");
hexdump(p->buffer, 8);
return 0;
}
/* check offsets */
fof1=AV_RB16(&p->buffer[1]);
fof2=AV_RB16(&p->buffer[3]);
if (fof1 != fof2)
{
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: frame offsets are different: 0x%04x 0x%04x\n",fof1,fof2);
return 0;
}
/* get first index */
p->seq_current[0]=AV_RB16(&p->buffer[5]);
/* now read the rest of stream chunk */
n = rm_read (p->s, &p->recv[5], fof1-5);
if (n<fof1-5) return 0;
/* get second index */
p->seq_current[1]=p->recv[5];
/* get timestamp */
p->ts_current=AV_RB32(&p->recv[6]);
/* get stream number */
stream=pnm_calc_stream(p);
/* saving timestamp */
p->ts_last[stream]=p->ts_current;
/* constructing a data packet header */
p->recv[0]=0; /* object version */
p->recv[1]=0;
AV_WB16(&p->recv[2], fof2); /* length */
p->recv[4]=0; /* stream number */
p->recv[5]=stream;
p->recv[10] &= 0xfe; /* streambox seems to do that... */
p->packet++;
p->recv_size=fof1;
return fof1;
}
// pnm_t *pnm_connect(const char *mrl) {
static pnm_t *pnm_connect(int fd, char *path) {
pnm_t *p=malloc(sizeof(pnm_t));
int need_response=0;
p->path=strdup(path);
p->s=fd;
pnm_send_request(p,pnm_available_bandwidths[10]);
if (!pnm_get_headers(p, &need_response)) {
mp_msg(MSGT_OPEN, MSGL_ERR, "input_pnm: failed to set up stream\n");
free(p->path);
free(p);
return NULL;
}
if (need_response)
pnm_send_response(p, pnm_response);
p->ts_last[0]=0;
p->ts_last[1]=0;
/* copy header to recv */
memcpy(p->recv, p->header, p->header_len);
p->recv_size = p->header_len;
p->recv_read = 0;
return p;
}
static int pnm_read (pnm_t *this, char *data, int len) {
int to_copy=len;
char *dest=data;
char *source=this->recv + this->recv_read;
int fill=this->recv_size - this->recv_read;
int retval;
if (len < 0) return 0;
while (to_copy > fill) {
memcpy(dest, source, fill);
to_copy -= fill;
dest += fill;
this->recv_read=0;
if ((retval = pnm_get_stream_chunk (this)) <= 0) {
#ifdef LOG
mp_msg(MSGT_OPEN, MSGL_INFO, "input_pnm: %d of %d bytes provided\n", len-to_copy, len);
#endif
if (retval < 0)
return retval;
else
return len-to_copy;
}
source = this->recv;
fill = this->recv_size - this->recv_read;
}
memcpy(dest, source, to_copy);
this->recv_read += to_copy;
#ifdef LOG
mp_msg(MSGT_OPEN, MSGL_INFO, "input_pnm: %d bytes provided\n", len);
#endif
return len;
}
static int pnm_streaming_read( int fd, char *buffer, int size, streaming_ctrl_t *stream_ctrl ) {
return pnm_read(stream_ctrl->data, buffer, size);
}
static int open_s(stream_t *stream,int mode, void* opts, int* file_format) {
int fd;
pnm_t *pnm;
URL_t *url;
mp_msg(MSGT_OPEN, MSGL_INFO, "STREAM_PNM, URL: %s\n", stream->url);
stream->streaming_ctrl = streaming_ctrl_new();
if(stream->streaming_ctrl==NULL)
return STREAM_ERROR;
stream->streaming_ctrl->bandwidth = network_bandwidth;
url = url_new(stream->url);
stream->streaming_ctrl->url = check4proxies(url);
//url_free(url);
fd = connect2Server( stream->streaming_ctrl->url->hostname,
stream->streaming_ctrl->url->port ? stream->streaming_ctrl->url->port : 7070,1 );
if(fd<0)
goto fail;
pnm = pnm_connect(fd,stream->streaming_ctrl->url->file);
if(!pnm)
goto fail;
stream->type = STREAMTYPE_STREAM;
stream->fd=fd;
stream->streaming_ctrl->data=pnm;
stream->streaming_ctrl->streaming_read = pnm_streaming_read;
//stream->streaming_ctrl->streaming_seek = nop_streaming_seek;
stream->streaming_ctrl->prebuffer_size = 8*1024; // 8 KBytes
stream->streaming_ctrl->buffering = 1;
stream->streaming_ctrl->status = streaming_playing_e;
*file_format = DEMUXER_TYPE_REAL;
fixup_network_stream_cache(stream);
return STREAM_OK;
fail:
streaming_ctrl_free(stream->streaming_ctrl);
stream->streaming_ctrl = NULL;
return STREAM_UNSUPPORTED;
}
const stream_info_t stream_info_pnm = {
"RealNetworks pnm",
"pnm",
"Arpi, xine team",
"ported from xine",
open_s,
{"pnm", NULL}, //pnm as fallback
NULL,
0 // Urls are an option string
};
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