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-rw-r--r--stream/realrtsp/real.c612
1 files changed, 612 insertions, 0 deletions
diff --git a/stream/realrtsp/real.c b/stream/realrtsp/real.c
new file mode 100644
index 0000000000..00c0c124b3
--- /dev/null
+++ b/stream/realrtsp/real.c
@@ -0,0 +1,612 @@
+/*
+ * This file was ported to MPlayer from xine CVS real.c,v 1.8 2003/03/30 17:11:50
+ */
+
+/*
+ * Copyright (C) 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ *
+ * special functions for real streams.
+ * adopted from joschkas real tools.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "../config.h"
+#include "../bswap.h"
+#include "real.h"
+#include "asmrp.h"
+#include "sdpplin.h"
+#include "xbuffer.h"
+#if USE_LIBAVUTIL_SO
+#include "ffmpeg/md5.h"
+#else
+#include "libavutil/md5.h"
+#endif
+
+/*
+#define LOG
+*/
+
+static const unsigned char xor_table[] = {
+ 0x05, 0x18, 0x74, 0xd0, 0x0d, 0x09, 0x02, 0x53,
+ 0xc0, 0x01, 0x05, 0x05, 0x67, 0x03, 0x19, 0x70,
+ 0x08, 0x27, 0x66, 0x10, 0x10, 0x72, 0x08, 0x09,
+ 0x63, 0x11, 0x03, 0x71, 0x08, 0x08, 0x70, 0x02,
+ 0x10, 0x57, 0x05, 0x18, 0x54, 0x00, 0x00, 0x00 };
+
+
+#define BE_32C(x,y) (*((uint32_t*)(x))=be2me_32(y))
+
+#define BE_16(x) be2me_16(*(uint16_t*)(x))
+
+#define BE_32(x) be2me_32(*(uint32_t*)(x))
+
+#ifndef MAX
+#define MAX(x,y) ((x>y) ? x : y)
+#endif
+
+#define BUF_SIZE 4096
+
+#ifdef LOG
+static void hexdump (const char *buf, int length) {
+
+ int i;
+
+ printf (" hexdump> ");
+ for (i = 0; i < length; i++) {
+ unsigned char c = buf[i];
+
+ printf ("%02x", c);
+
+ if ((i % 16) == 15)
+ printf ("\n ");
+
+ if ((i % 2) == 1)
+ printf (" ");
+
+ }
+ printf ("\n");
+}
+#endif
+
+
+static void calc_response_string (char *result, char *challenge) {
+
+ char zres[16];
+ int i;
+
+ av_md5_sum(zres, challenge, 64);
+
+ /* convert zres to ascii string */
+ for (i=0; i<16; i++ ) {
+ char a, b;
+
+ a = (zres[i] >> 4) & 15;
+ b = zres[i] & 15;
+
+ result[i*2] = ((a<10) ? (a+48) : (a+87)) & 255;
+ result[i*2+1] = ((b<10) ? (b+48) : (b+87)) & 255;
+ }
+}
+
+static void real_calc_response_and_checksum (char *response, char *chksum, char *challenge) {
+
+ int ch_len, table_len, resp_len;
+ int i;
+ char *ptr;
+ char buf[128];
+
+ /* initialize return values */
+ memset(response, 0, 64);
+ memset(chksum, 0, 34);
+
+ /* initialize buffer */
+ memset(buf, 0, 128);
+ ptr=buf;
+ BE_32C(ptr, 0xa1e9149d);
+ ptr+=4;
+ BE_32C(ptr, 0x0e6b3b59);
+ ptr+=4;
+
+ /* some (length) checks */
+ if (challenge != NULL)
+ {
+ ch_len = strlen (challenge);
+
+ if (ch_len == 40) /* what a hack... */
+ {
+ challenge[32]=0;
+ ch_len=32;
+ }
+ if ( ch_len > 56 ) ch_len=56;
+
+ /* copy challenge to buf */
+ memcpy(ptr, challenge, ch_len);
+ }
+
+ table_len = strlen(xor_table);
+
+ if (table_len > 56) table_len=56;
+
+ /* xor challenge bytewise with xor_table */
+ for (i=0; i<table_len; i++)
+ ptr[i] = ptr[i] ^ xor_table[i];
+
+ calc_response_string (response, buf);
+
+ /* add tail */
+ resp_len = strlen (response);
+ strcpy (&response[resp_len], "01d0a8e3");
+
+ /* calculate checksum */
+ for (i=0; i<resp_len/4; i++)
+ chksum[i] = response[i*4];
+}
+
+
+/*
+ * takes a MLTI-Chunk and a rule number got from match_asm_rule,
+ * returns a pointer to selected data and number of bytes in that.
+ */
+
+static int select_mlti_data(const char *mlti_chunk, int mlti_size, int selection, char **out) {
+
+ int numrules, codec, size;
+ int i;
+
+ /* MLTI chunk should begin with MLTI */
+
+ if ((mlti_chunk[0] != 'M')
+ ||(mlti_chunk[1] != 'L')
+ ||(mlti_chunk[2] != 'T')
+ ||(mlti_chunk[3] != 'I'))
+ {
+#ifdef LOG
+ printf("libreal: MLTI tag not detected, copying data\n");
+#endif
+ *out = xbuffer_copyin(*out, 0, mlti_chunk, mlti_size);
+ return mlti_size;
+ }
+
+ mlti_chunk+=4;
+
+ /* next 16 bits are the number of rules */
+ numrules=BE_16(mlti_chunk);
+ if (selection >= numrules) return 0;
+
+ /* now <numrules> indices of codecs follows */
+ /* we skip to selection */
+ mlti_chunk+=(selection+1)*2;
+
+ /* get our index */
+ codec=BE_16(mlti_chunk);
+
+ /* skip to number of codecs */
+ mlti_chunk+=(numrules-selection)*2;
+
+ /* get number of codecs */
+ numrules=BE_16(mlti_chunk);
+
+ if (codec >= numrules) {
+ printf("codec index >= number of codecs. %i %i\n", codec, numrules);
+ return 0;
+ }
+
+ mlti_chunk+=2;
+
+ /* now seek to selected codec */
+ for (i=0; i<codec; i++) {
+ size=BE_32(mlti_chunk);
+ mlti_chunk+=size+4;
+ }
+
+ size=BE_32(mlti_chunk);
+
+#ifdef LOG
+ hexdump(mlti_chunk+4, size);
+#endif
+ *out = xbuffer_copyin(*out, 0, mlti_chunk+4, size);
+ return size;
+}
+
+/*
+ * looking at stream description.
+ */
+
+static rmff_header_t *real_parse_sdp(char *data, char **stream_rules, uint32_t bandwidth) {
+
+ sdpplin_t *desc;
+ rmff_header_t *header;
+ char *buf;
+ int len, i;
+ int max_bit_rate=0;
+ int avg_bit_rate=0;
+ int max_packet_size=0;
+ int avg_packet_size=0;
+ int duration=0;
+
+
+ if (!data) return NULL;
+
+ desc=sdpplin_parse(data);
+
+ if (!desc) return NULL;
+
+ buf = xbuffer_init(2048);
+ header=calloc(1,sizeof(rmff_header_t));
+
+ header->fileheader=rmff_new_fileheader(4+desc->stream_count);
+ header->cont=rmff_new_cont(
+ desc->title,
+ desc->author,
+ desc->copyright,
+ desc->abstract);
+ header->data=rmff_new_dataheader(0,0);
+ header->streams=calloc(1,sizeof(rmff_mdpr_t*)*(desc->stream_count+1));
+#ifdef LOG
+ printf("number of streams: %u\n", desc->stream_count);
+#endif
+
+ for (i=0; i<desc->stream_count; i++) {
+
+ int j=0;
+ int n;
+ char b[64];
+ int rulematches[16];
+
+#ifdef LOG
+ printf("calling asmrp_match with:\n%s\n%u\n", desc->stream[i]->asm_rule_book, bandwidth);
+#endif
+ n=asmrp_match(desc->stream[i]->asm_rule_book, bandwidth, rulematches);
+ for (j=0; j<n; j++) {
+#ifdef LOG
+ printf("asmrp rule match: %u for stream %u\n", rulematches[j], desc->stream[i]->stream_id);
+#endif
+ sprintf(b,"stream=%u;rule=%u,", desc->stream[i]->stream_id, rulematches[j]);
+ *stream_rules = xbuffer_strcat(*stream_rules, b);
+ }
+
+ if (!desc->stream[i]->mlti_data) {
+ len = 0;
+ buf = NULL;
+ } else
+ len=select_mlti_data(desc->stream[i]->mlti_data, desc->stream[i]->mlti_data_size, rulematches[0], &buf);
+
+ header->streams[i]=rmff_new_mdpr(
+ desc->stream[i]->stream_id,
+ desc->stream[i]->max_bit_rate,
+ desc->stream[i]->avg_bit_rate,
+ desc->stream[i]->max_packet_size,
+ desc->stream[i]->avg_packet_size,
+ desc->stream[i]->start_time,
+ desc->stream[i]->preroll,
+ desc->stream[i]->duration,
+ desc->stream[i]->stream_name,
+ desc->stream[i]->mime_type,
+ len,
+ buf);
+
+ duration=MAX(duration,desc->stream[i]->duration);
+ max_bit_rate+=desc->stream[i]->max_bit_rate;
+ avg_bit_rate+=desc->stream[i]->avg_bit_rate;
+ max_packet_size=MAX(max_packet_size, desc->stream[i]->max_packet_size);
+ if (avg_packet_size)
+ avg_packet_size=(avg_packet_size + desc->stream[i]->avg_packet_size) / 2;
+ else
+ avg_packet_size=desc->stream[i]->avg_packet_size;
+ }
+
+ if (*stream_rules && strlen(*stream_rules) && (*stream_rules)[strlen(*stream_rules)-1] == ',')
+ (*stream_rules)[strlen(*stream_rules)-1]=0; /* delete last ',' in stream_rules */
+
+ header->prop=rmff_new_prop(
+ max_bit_rate,
+ avg_bit_rate,
+ max_packet_size,
+ avg_packet_size,
+ 0,
+ duration,
+ 0,
+ 0,
+ 0,
+ desc->stream_count,
+ desc->flags);
+
+ rmff_fix_header(header);
+ buf = xbuffer_free(buf);
+
+ return header;
+}
+
+int real_get_rdt_chunk(rtsp_t *rtsp_session, char **buffer) {
+
+ int n=1;
+ uint8_t header[8];
+ rmff_pheader_t ph;
+ int size;
+ int flags1, flags2;
+ int unknown1;
+ uint32_t ts;
+ static uint32_t prev_ts = -1;
+ static int prev_stream_number = -1;
+
+ n=rtsp_read_data(rtsp_session, header, 8);
+ if (n<8) return 0;
+ if (header[0] != 0x24)
+ {
+ printf("rdt chunk not recognized: got 0x%02x\n", header[0]);
+ return 0;
+ }
+ size=(header[1]<<16)+(header[2]<<8)+(header[3]);
+ flags1=header[4];
+ if ((flags1!=0x40)&&(flags1!=0x42))
+ {
+#ifdef LOG
+ printf("got flags1: 0x%02x\n",flags1);
+#endif
+ if(header[6] == 0x06) {
+ printf("Stream EOF detected\n");
+ return -1;
+ }
+ header[0]=header[5];
+ header[1]=header[6];
+ header[2]=header[7];
+ n=rtsp_read_data(rtsp_session, header+3, 5);
+ if (n<5) return 0;
+#ifdef LOG
+ printf("ignoring bytes:\n");
+ hexdump(header, 8);
+#endif
+ n=rtsp_read_data(rtsp_session, header+4, 4);
+ if (n<4) return 0;
+ flags1=header[4];
+ size-=9;
+ }
+ flags2=header[7];
+ // header[5..6] == frame number in stream
+ unknown1=(header[5]<<16)+(header[6]<<8)+(header[7]);
+ n=rtsp_read_data(rtsp_session, header, 6);
+ if (n<6) return 0;
+ ts=BE_32(header);
+
+#ifdef LOG
+ printf("ts: %u, size: %u, flags: 0x%02x, unknown values: 0x%06x 0x%02x 0x%02x\n",
+ ts, size, flags1, unknown1, header[4], header[5]);
+#endif
+ size+=2;
+
+ ph.object_version=0;
+ ph.length=size;
+ ph.stream_number=(flags1>>1)&1;
+ ph.timestamp=ts;
+ ph.reserved=0;
+ if ((flags2&1) == 0 && (prev_ts != ts || prev_stream_number != ph.stream_number))
+ {
+ prev_ts = ts;
+ prev_stream_number = ph.stream_number;
+ ph.flags=2;
+ }
+ else
+ ph.flags=0;
+ *buffer = xbuffer_ensure_size(*buffer, 12+size);
+ rmff_dump_pheader(&ph, *buffer);
+ size-=12;
+ n=rtsp_read_data(rtsp_session, (*buffer)+12, size);
+
+ return (n <= 0) ? 0 : n+12;
+}
+
+static int convert_timestamp(char *str, int *sec, int *msec) {
+ int hh, mm, ss, ms = 0;
+ if (sscanf(str, "%d:%d:%d.%d", &hh, &mm, &ss, &ms) < 3) {
+ hh = 0;
+ if (sscanf(str, "%d:%d.%d", &mm, &ss, &ms) < 2) {
+ mm = 0;
+ if (sscanf(str, "%d.%d", &ss, &ms) < 1) {
+ ss = 0;
+ ms = 0;
+ }
+ }
+ }
+ if (sec)
+ *sec = hh * 3600 + mm * 60 + ss;
+ if (msec)
+ *msec = ms;
+ return 1;
+}
+
+//! maximum size of the rtsp description, must be < INT_MAX
+#define MAX_DESC_BUF (20 * 1024 * 1024)
+rmff_header_t *real_setup_and_get_header(rtsp_t *rtsp_session, uint32_t bandwidth) {
+
+ char *description=NULL;
+ char *session_id=NULL;
+ rmff_header_t *h;
+ char *challenge1;
+ char challenge2[64];
+ char checksum[34];
+ char *subscribe;
+ char *buf = xbuffer_init(256);
+ char *mrl=rtsp_get_mrl(rtsp_session);
+ unsigned int size;
+ int status;
+ uint32_t maxbandwidth = bandwidth;
+
+ /* get challenge */
+ challenge1=strdup(rtsp_search_answers(rtsp_session,"RealChallenge1"));
+#ifdef LOG
+ printf("real: Challenge1: %s\n", challenge1);
+#endif
+
+ /* set a reasonable default to get the best stream, unless bandwidth given */
+ if (!bandwidth)
+ bandwidth = 10485800;
+
+ /* request stream description */
+ rtsp_schedule_field(rtsp_session, "Accept: application/sdp");
+ sprintf(buf, "Bandwidth: %u", bandwidth);
+ rtsp_schedule_field(rtsp_session, buf);
+ rtsp_schedule_field(rtsp_session, "GUID: 00000000-0000-0000-0000-000000000000");
+ rtsp_schedule_field(rtsp_session, "RegionData: 0");
+ rtsp_schedule_field(rtsp_session, "ClientID: Linux_2.4_6.0.9.1235_play32_RN01_EN_586");
+ rtsp_schedule_field(rtsp_session, "SupportsMaximumASMBandwidth: 1");
+ rtsp_schedule_field(rtsp_session, "Language: en-US");
+ rtsp_schedule_field(rtsp_session, "Require: com.real.retain-entity-for-setup");
+ status=rtsp_request_describe(rtsp_session,NULL);
+
+ if ( status<200 || status>299 )
+ {
+ char *alert=rtsp_search_answers(rtsp_session,"Alert");
+ if (alert) {
+ printf("real: got message from server:\n%s\n", alert);
+ }
+ rtsp_send_ok(rtsp_session);
+ buf = xbuffer_free(buf);
+ return NULL;
+ }
+
+ /* receive description */
+ size=0;
+ if (!rtsp_search_answers(rtsp_session,"Content-length"))
+ printf("real: got no Content-length!\n");
+ else
+ size=atoi(rtsp_search_answers(rtsp_session,"Content-length"));
+
+ // as size is unsigned this also catches the case (size < 0)
+ if (size > MAX_DESC_BUF) {
+ printf("real: Content-length for description too big (> %uMB)!\n",
+ MAX_DESC_BUF/(1024*1024) );
+ xbuffer_free(buf);
+ return NULL;
+ }
+
+ if (!rtsp_search_answers(rtsp_session,"ETag"))
+ printf("real: got no ETag!\n");
+ else
+ session_id=strdup(rtsp_search_answers(rtsp_session,"ETag"));
+
+#ifdef LOG
+ printf("real: Stream description size: %u\n", size);
+#endif
+
+ description=malloc(size+1);
+
+ if( rtsp_read_data(rtsp_session, description, size) <= 0) {
+ buf = xbuffer_free(buf);
+ return NULL;
+ }
+ description[size]=0;
+
+ /* parse sdp (sdpplin) and create a header and a subscribe string */
+ subscribe = xbuffer_init(256);
+ strcpy(subscribe, "Subscribe: ");
+ h=real_parse_sdp(description, &subscribe, bandwidth);
+ if (!h) {
+ subscribe = xbuffer_free(subscribe);
+ buf = xbuffer_free(buf);
+ return NULL;
+ }
+ rmff_fix_header(h);
+
+#ifdef LOG
+ printf("Title: %s\nCopyright: %s\nAuthor: %s\nStreams: %i\n",
+ h->cont->title, h->cont->copyright, h->cont->author, h->prop->num_streams);
+#endif
+
+ /* setup our streams */
+ real_calc_response_and_checksum (challenge2, checksum, challenge1);
+ buf = xbuffer_ensure_size(buf, strlen(challenge2) + strlen(checksum) + 32);
+ sprintf(buf, "RealChallenge2: %s, sd=%s", challenge2, checksum);
+ rtsp_schedule_field(rtsp_session, buf);
+ buf = xbuffer_ensure_size(buf, strlen(session_id) + 32);
+ sprintf(buf, "If-Match: %s", session_id);
+ rtsp_schedule_field(rtsp_session, buf);
+ rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
+ buf = xbuffer_ensure_size(buf, strlen(mrl) + 32);
+ sprintf(buf, "%s/streamid=0", mrl);
+ rtsp_request_setup(rtsp_session,buf,NULL);
+
+ if (h->prop->num_streams > 1) {
+ rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
+ buf = xbuffer_ensure_size(buf, strlen(session_id) + 32);
+ sprintf(buf, "If-Match: %s", session_id);
+ rtsp_schedule_field(rtsp_session, buf);
+
+ buf = xbuffer_ensure_size(buf, strlen(mrl) + 32);
+ sprintf(buf, "%s/streamid=1", mrl);
+ rtsp_request_setup(rtsp_session,buf,NULL);
+ }
+ /* set stream parameter (bandwidth) with our subscribe string */
+ rtsp_schedule_field(rtsp_session, subscribe);
+ rtsp_request_setparameter(rtsp_session,NULL);
+
+ /* set delivery bandwidth */
+ if (maxbandwidth) {
+ sprintf(buf, "SetDeliveryBandwidth: Bandwidth=%u;BackOff=0", maxbandwidth);
+ rtsp_schedule_field(rtsp_session, buf);
+ rtsp_request_setparameter(rtsp_session,NULL);
+ }
+
+ {
+ int s_ss = 0, s_ms = 0, e_ss = 0, e_ms = 0;
+ char *str;
+ if ((str = rtsp_get_param(rtsp_session, "start"))) {
+ convert_timestamp(str, &s_ss, &s_ms);
+ free(str);
+ }
+ if ((str = rtsp_get_param(rtsp_session, "end"))) {
+ convert_timestamp(str, &e_ss, &e_ms);
+ free(str);
+ }
+ str = buf + sprintf(buf, s_ms ? "%s%d.%d-" : "%s%d-", "Range: npt=", s_ss, s_ms);
+ if (e_ss || e_ms)
+ sprintf(str, e_ms ? "%d.%d" : "%d", e_ss, e_ms);
+ }
+ rtsp_schedule_field(rtsp_session, buf);
+ /* and finally send a play request */
+ rtsp_request_play(rtsp_session,NULL);
+
+ subscribe = xbuffer_free(subscribe);
+ buf = xbuffer_free(buf);
+ return h;
+}
+
+struct real_rtsp_session_t *
+init_real_rtsp_session (void)
+{
+ struct real_rtsp_session_t *real_rtsp_session = NULL;
+
+ real_rtsp_session = malloc (sizeof (struct real_rtsp_session_t));
+ real_rtsp_session->recv = xbuffer_init (BUF_SIZE);
+
+ return real_rtsp_session;
+}
+
+void
+free_real_rtsp_session (struct real_rtsp_session_t* real_session)
+{
+ if (!real_session)
+ return;
+
+ xbuffer_free (real_session->recv);
+ free (real_session);
+}
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