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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program 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.
*
* This program 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <avdec_private.h>
#define PROBE_BYTES 10
static int probe_m3u(bgav_input_context_t * input)
{
char probe_buffer[PROBE_BYTES];
char * pos;
const char * mimetype = NULL;
int result = 0;
/* Most likely, we get this via http, so we can check the mimetype */
if(gavl_dictionary_get_src(&input->m, GAVL_META_SRC, 0, &mimetype, NULL) && mimetype)
{
if(strcmp(mimetype, "audio/x-pn-realaudio-plugin") &&
strcmp(mimetype, "video/x-pn-realvideo-plugin") &&
strcmp(mimetype, "audio/x-pn-realaudio") &&
strcmp(mimetype, "video/x-pn-realvideo") &&
strcmp(mimetype, "audio/x-mpegurl") &&
strcmp(mimetype, "audio/mpegurl") &&
strcmp(mimetype, "audio/m3u") &&
strncasecmp(mimetype, "application/x-mpegurl", 21) && // HLS
strncasecmp(mimetype, "application/vnd.apple.mpegurl", 29)) // HLS
return 0;
}
else if(input->filename)
{
pos = strrchr(input->filename, '.');
if(!pos)
return 0;
if(strcasecmp(pos, ".m3u") &&
strcasecmp(pos, ".m3u8") &&
strcasecmp(pos, ".ram"))
return 0;
}
if(bgav_input_get_data(input, (uint8_t*)probe_buffer,
PROBE_BYTES) < PROBE_BYTES)
goto end;
/* Some streams with the above mimetype are in realtiy
different streams, so we check this here */
if(strncmp(probe_buffer, "mms://", 6) &&
strncmp(probe_buffer, "http://", 7) &&
strncmp(probe_buffer, "https://", 8) &&
strncmp(probe_buffer, "rtsp://", 7) &&
(probe_buffer[0] != '#'))
goto end;
result = 1;
end:
return result;
}
static char * strip_spaces(char * str)
{
char * pos = str;
while(isspace(*pos) && *pos != '\0')
pos++;
if((*pos == '\0'))
{
*str = '\0';
return str;
}
if(pos > str)
memmove(str, pos, strlen(pos)+1);
pos = str + (strlen(str)-1);
while(isspace(*pos))
pos--;
pos++;
*pos = '\0';
return str;
}
static bgav_track_table_t * parse_m3u(bgav_input_context_t * input)
{
char * buffer = NULL;
uint32_t buffer_alloc = 0;
char * pos;
bgav_track_table_t * tt;
bgav_track_t * t = NULL;
tt = bgav_track_table_create(0);
while(1)
{
if(!bgav_input_read_line(input, &buffer, &buffer_alloc, 0, NULL))
break;
pos = strip_spaces(buffer);
if(!strcmp(pos, "--stop--"))
break;
if(*pos == '\0') // Empty line
continue;
if(*pos == '#')
{
// m3u8
// http://tools.ietf.org/html/draft-pantos-http-live-streaming-12#section-3.4.10
if(!strncasecmp(pos, "#EXT-X-STREAM-INF:", 18))
{
int idx = 0;
char ** attrs;
if(!t)
t = bgav_track_table_append_track(tt);
attrs = gavl_strbreak(pos + 18, ',');
while(attrs[idx])
{
if(!strncasecmp(attrs[idx], "BANDWIDTH=", 10))
gavl_dictionary_set_string(t->metadata, GAVL_META_BITRATE, attrs[idx] + 10);
idx++;
}
gavl_strbreak_free(attrs);
}
// Extended m3u
else if(!strncasecmp(pos, "#EXTINF:", 8))
{
char * comma;
gavl_time_t duration;
comma = strchr(pos, ',');
if(comma)
{
*comma = '\0';
if(!t)
t = bgav_track_table_append_track(tt);
duration = gavl_seconds_to_time(strtod(pos, NULL));
if(duration > 0)
gavl_dictionary_set_long(t->metadata, GAVL_META_APPROX_DURATION, duration);
comma++;
while(isspace(*comma) && (*comma != '\0'))
comma++;
if(*comma != '\0')
gavl_dictionary_set_string(t->metadata, GAVL_META_LABEL, comma);
}
}
}
else
{
if(!t)
t = bgav_track_table_append_track(tt);
gavl_dictionary_set_string_nocopy(t->metadata, GAVL_META_REFURL,
bgav_input_absolute_url(input, pos));
t = NULL;
}
}
if(buffer)
free(buffer);
return tt;
}
const bgav_redirector_t bgav_redirector_m3u =
{
.name = "m3u/ram",
.probe = probe_m3u,
.parse = parse_m3u
};
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