2001-07-22 16:18:56 +02:00
|
|
|
/*
|
2011-10-30 17:56:57 +01:00
|
|
|
* unbuffered I/O
|
2002-05-26 00:34:32 +02:00
|
|
|
* Copyright (c) 2001 Fabrice Bellard
|
2001-07-22 16:18:56 +02:00
|
|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* This file is part of Libav.
|
2006-10-07 17:30:46 +02:00
|
|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* Libav is free software; you can redistribute it and/or
|
2002-05-26 00:34:32 +02:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 17:30:46 +02:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2001-07-22 16:18:56 +02:00
|
|
|
*
|
2011-03-18 18:35:10 +01:00
|
|
|
* Libav is distributed in the hope that it will be useful,
|
2001-07-22 16:18:56 +02:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2002-05-26 00:34:32 +02:00
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* Lesser General Public License for more details.
|
2001-07-22 16:18:56 +02:00
|
|
|
*
|
2002-05-26 00:34:32 +02:00
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2011-03-18 18:35:10 +01:00
|
|
|
* License along with Libav; if not, write to the Free Software
|
2006-01-12 23:43:26 +01:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2001-07-22 16:18:56 +02:00
|
|
|
*/
|
2008-05-09 13:56:36 +02:00
|
|
|
|
|
|
|
#include "libavutil/avstring.h"
|
2011-11-05 10:04:04 +01:00
|
|
|
#include "libavutil/dict.h"
|
2010-09-26 16:25:22 +02:00
|
|
|
#include "libavutil/opt.h"
|
2012-06-21 21:31:44 +02:00
|
|
|
#include "libavutil/time.h"
|
2008-10-10 18:59:37 +02:00
|
|
|
#include "os_support.h"
|
2001-07-22 16:18:56 +02:00
|
|
|
#include "avformat.h"
|
2010-03-05 23:30:21 +01:00
|
|
|
#if CONFIG_NETWORK
|
|
|
|
#include "network.h"
|
|
|
|
#endif
|
2011-03-31 16:04:59 +02:00
|
|
|
#include "url.h"
|
2008-03-10 20:03:39 +01:00
|
|
|
|
|
|
|
/** @name Logging context. */
|
|
|
|
/*@{*/
|
|
|
|
static const char *urlcontext_to_name(void *ptr)
|
|
|
|
{
|
|
|
|
URLContext *h = (URLContext *)ptr;
|
2013-10-27 14:45:01 +01:00
|
|
|
if (h->prot)
|
|
|
|
return h->prot->name;
|
|
|
|
else
|
|
|
|
return "NULL";
|
2008-03-10 20:03:39 +01:00
|
|
|
}
|
2011-11-05 10:04:04 +01:00
|
|
|
|
|
|
|
static void *urlcontext_child_next(void *obj, void *prev)
|
|
|
|
{
|
|
|
|
URLContext *h = obj;
|
|
|
|
if (!prev && h->priv_data && h->prot->priv_data_class)
|
|
|
|
return h->priv_data;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const AVClass *urlcontext_child_class_next(const AVClass *prev)
|
|
|
|
{
|
2016-02-19 10:39:29 +01:00
|
|
|
int i;
|
2011-11-05 10:04:04 +01:00
|
|
|
|
|
|
|
/* find the protocol that corresponds to prev */
|
2016-02-19 10:39:29 +01:00
|
|
|
for (i = 0; ff_url_protocols[i]; i++) {
|
|
|
|
if (ff_url_protocols[i]->priv_data_class == prev) {
|
|
|
|
i++;
|
2011-11-05 10:04:04 +01:00
|
|
|
break;
|
2016-02-19 10:39:29 +01:00
|
|
|
}
|
|
|
|
}
|
2011-11-05 10:04:04 +01:00
|
|
|
|
|
|
|
/* find next protocol with priv options */
|
2016-02-19 10:39:29 +01:00
|
|
|
for (; ff_url_protocols[i]; i++)
|
|
|
|
if (ff_url_protocols[i]->priv_data_class)
|
|
|
|
return ff_url_protocols[i]->priv_data_class;
|
2011-11-05 10:04:04 +01:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-10-27 14:45:01 +01:00
|
|
|
static const AVOption options[] = { { NULL } };
|
2011-11-06 22:03:45 +01:00
|
|
|
const AVClass ffurl_context_class = {
|
2013-10-27 14:45:01 +01:00
|
|
|
.class_name = "URLContext",
|
|
|
|
.item_name = urlcontext_to_name,
|
|
|
|
.option = options,
|
|
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
|
|
.child_next = urlcontext_child_next,
|
2011-11-05 10:04:04 +01:00
|
|
|
.child_class_next = urlcontext_child_class_next,
|
2011-04-29 11:30:02 +02:00
|
|
|
};
|
2008-03-10 20:03:39 +01:00
|
|
|
/*@}*/
|
2001-07-22 16:18:56 +02:00
|
|
|
|
2016-02-19 10:39:29 +01:00
|
|
|
static int url_alloc_for_protocol(URLContext **puc, const URLProtocol *up,
|
2013-10-27 14:45:01 +01:00
|
|
|
const char *filename, int flags,
|
|
|
|
const AVIOInterruptCB *int_cb)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
|
|
|
URLContext *uc;
|
|
|
|
int err;
|
|
|
|
|
2010-03-05 23:30:21 +01:00
|
|
|
#if CONFIG_NETWORK
|
2011-12-30 10:43:10 +01:00
|
|
|
if (up->flags & URL_PROTOCOL_FLAG_NETWORK && !ff_network_init())
|
2010-03-05 23:30:21 +01:00
|
|
|
return AVERROR(EIO);
|
|
|
|
#endif
|
2010-01-28 10:11:26 +01:00
|
|
|
uc = av_mallocz(sizeof(URLContext) + strlen(filename) + 1);
|
2002-07-24 19:50:23 +02:00
|
|
|
if (!uc) {
|
2007-02-13 19:26:14 +01:00
|
|
|
err = AVERROR(ENOMEM);
|
2002-07-24 19:50:23 +02:00
|
|
|
goto fail;
|
|
|
|
}
|
2011-11-06 22:03:45 +01:00
|
|
|
uc->av_class = &ffurl_context_class;
|
2013-10-27 14:45:01 +01:00
|
|
|
uc->filename = (char *)&uc[1];
|
2003-01-11 05:59:17 +01:00
|
|
|
strcpy(uc->filename, filename);
|
2013-10-27 14:45:01 +01:00
|
|
|
uc->prot = up;
|
|
|
|
uc->flags = flags;
|
|
|
|
uc->is_streamed = 0; /* default = not streamed */
|
2002-07-24 19:50:23 +02:00
|
|
|
uc->max_packet_size = 0; /* default: stream file */
|
2010-06-22 16:09:08 +02:00
|
|
|
if (up->priv_data_size) {
|
|
|
|
uc->priv_data = av_mallocz(up->priv_data_size);
|
2013-10-22 21:22:13 +02:00
|
|
|
if (!uc->priv_data) {
|
|
|
|
err = AVERROR(ENOMEM);
|
|
|
|
goto fail;
|
|
|
|
}
|
2010-06-22 16:09:08 +02:00
|
|
|
if (up->priv_data_class) {
|
2013-10-27 14:45:01 +01:00
|
|
|
*(const AVClass **)uc->priv_data = up->priv_data_class;
|
2010-06-22 16:09:08 +02:00
|
|
|
av_opt_set_defaults(uc->priv_data);
|
|
|
|
}
|
|
|
|
}
|
2011-11-06 21:50:44 +01:00
|
|
|
if (int_cb)
|
|
|
|
uc->interrupt_callback = *int_cb;
|
2008-05-05 11:17:56 +02:00
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
*puc = uc;
|
|
|
|
return 0;
|
2013-10-27 14:45:01 +01:00
|
|
|
fail:
|
2002-07-24 19:50:23 +02:00
|
|
|
*puc = NULL;
|
2013-10-22 21:22:13 +02:00
|
|
|
if (uc)
|
|
|
|
av_freep(&uc->priv_data);
|
|
|
|
av_freep(&uc);
|
2010-03-05 23:30:21 +01:00
|
|
|
#if CONFIG_NETWORK
|
2011-12-30 10:43:10 +01:00
|
|
|
if (up->flags & URL_PROTOCOL_FLAG_NETWORK)
|
|
|
|
ff_network_close();
|
2010-03-05 23:30:21 +01:00
|
|
|
#endif
|
2002-07-24 19:50:23 +02:00
|
|
|
return err;
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
|
|
|
|
2013-10-27 14:45:01 +01:00
|
|
|
int ffurl_connect(URLContext *uc, AVDictionary **options)
|
2010-06-22 16:03:37 +02:00
|
|
|
{
|
2011-11-05 10:04:04 +01:00
|
|
|
int err =
|
2013-10-27 14:45:01 +01:00
|
|
|
uc->prot->url_open2 ? uc->prot->url_open2(uc,
|
|
|
|
uc->filename,
|
|
|
|
uc->flags,
|
|
|
|
options) :
|
2011-11-05 10:04:04 +01:00
|
|
|
uc->prot->url_open(uc, uc->filename, uc->flags);
|
2010-06-22 16:03:37 +02:00
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
uc->is_connected = 1;
|
2013-10-27 14:45:01 +01:00
|
|
|
/* We must be careful here as ffurl_seek() could be slow,
|
|
|
|
* for example for http */
|
|
|
|
if ((uc->flags & AVIO_FLAG_WRITE) || !strcmp(uc->prot->name, "file"))
|
|
|
|
if (!uc->is_streamed && ffurl_seek(uc, 0, SEEK_SET) < 0)
|
|
|
|
uc->is_streamed = 1;
|
2010-06-22 16:03:37 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-07-18 20:38:23 +02:00
|
|
|
#define URL_SCHEME_CHARS \
|
|
|
|
"abcdefghijklmnopqrstuvwxyz" \
|
|
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
|
|
|
|
"0123456789+-."
|
|
|
|
|
2011-11-06 21:50:44 +01:00
|
|
|
int ffurl_alloc(URLContext **puc, const char *filename, int flags,
|
|
|
|
const AVIOInterruptCB *int_cb)
|
2008-08-20 01:44:23 +02:00
|
|
|
{
|
2011-02-28 14:39:36 +01:00
|
|
|
char proto_str[128], proto_nested[128], *ptr;
|
2010-07-18 20:38:23 +02:00
|
|
|
size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
|
2016-02-19 10:39:29 +01:00
|
|
|
int i;
|
2010-07-18 20:38:23 +02:00
|
|
|
|
|
|
|
if (filename[proto_len] != ':' || is_dos_path(filename))
|
2008-08-20 01:44:23 +02:00
|
|
|
strcpy(proto_str, "file");
|
2010-07-18 20:38:23 +02:00
|
|
|
else
|
2013-10-27 14:45:01 +01:00
|
|
|
av_strlcpy(proto_str, filename,
|
|
|
|
FFMIN(proto_len + 1, sizeof(proto_str)));
|
2008-08-20 01:44:23 +02:00
|
|
|
|
2011-02-28 14:39:36 +01:00
|
|
|
av_strlcpy(proto_nested, proto_str, sizeof(proto_nested));
|
|
|
|
if ((ptr = strchr(proto_nested, '+')))
|
|
|
|
*ptr = '\0';
|
|
|
|
|
2016-02-19 10:39:29 +01:00
|
|
|
for (i = 0; ff_url_protocols[i]; i++) {
|
|
|
|
const URLProtocol *up = ff_url_protocols[i];
|
2008-08-20 01:44:23 +02:00
|
|
|
if (!strcmp(proto_str, up->name))
|
2013-10-27 14:45:01 +01:00
|
|
|
return url_alloc_for_protocol(puc, up, filename, flags, int_cb);
|
2011-02-28 14:39:36 +01:00
|
|
|
if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
|
|
|
|
!strcmp(proto_nested, up->name))
|
2013-10-27 14:45:01 +01:00
|
|
|
return url_alloc_for_protocol(puc, up, filename, flags, int_cb);
|
2008-08-20 01:44:23 +02:00
|
|
|
}
|
|
|
|
*puc = NULL;
|
2013-10-20 22:01:54 +02:00
|
|
|
return AVERROR_PROTOCOL_NOT_FOUND;
|
2008-08-20 01:44:23 +02:00
|
|
|
}
|
|
|
|
|
2011-11-06 21:50:44 +01:00
|
|
|
int ffurl_open(URLContext **puc, const char *filename, int flags,
|
2011-11-05 10:04:04 +01:00
|
|
|
const AVIOInterruptCB *int_cb, AVDictionary **options)
|
2010-06-22 16:03:37 +02:00
|
|
|
{
|
2011-11-06 21:50:44 +01:00
|
|
|
int ret = ffurl_alloc(puc, filename, flags, int_cb);
|
2010-06-22 16:03:37 +02:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
2011-11-05 10:04:04 +01:00
|
|
|
if (options && (*puc)->prot->priv_data_class &&
|
|
|
|
(ret = av_opt_set_dict((*puc)->priv_data, options)) < 0)
|
|
|
|
goto fail;
|
|
|
|
ret = ffurl_connect(*puc, options);
|
2010-06-22 16:03:37 +02:00
|
|
|
if (!ret)
|
|
|
|
return 0;
|
2011-11-05 10:04:04 +01:00
|
|
|
fail:
|
2011-03-31 17:36:06 +02:00
|
|
|
ffurl_close(*puc);
|
2010-06-22 16:03:37 +02:00
|
|
|
*puc = NULL;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2013-10-27 14:45:01 +01:00
|
|
|
static inline int retry_transfer_wrapper(URLContext *h, uint8_t *buf,
|
|
|
|
int size, int size_min,
|
|
|
|
int (*transfer_func)(URLContext *h,
|
|
|
|
uint8_t *buf,
|
|
|
|
int size))
|
2009-06-04 08:25:53 +02:00
|
|
|
{
|
|
|
|
int ret, len;
|
2010-01-24 19:09:46 +01:00
|
|
|
int fast_retries = 5;
|
2009-06-04 08:25:53 +02:00
|
|
|
|
|
|
|
len = 0;
|
2011-02-04 19:12:37 +01:00
|
|
|
while (len < size_min) {
|
2013-10-27 14:45:01 +01:00
|
|
|
ret = transfer_func(h, buf + len, size - len);
|
2011-02-04 19:12:37 +01:00
|
|
|
if (ret == AVERROR(EINTR))
|
|
|
|
continue;
|
2011-04-04 20:11:19 +02:00
|
|
|
if (h->flags & AVIO_FLAG_NONBLOCK)
|
2011-02-04 19:12:37 +01:00
|
|
|
return ret;
|
2010-01-23 11:23:47 +01:00
|
|
|
if (ret == AVERROR(EAGAIN)) {
|
|
|
|
ret = 0;
|
2010-01-24 19:09:46 +01:00
|
|
|
if (fast_retries)
|
|
|
|
fast_retries--;
|
|
|
|
else
|
2012-06-21 21:31:44 +02:00
|
|
|
av_usleep(1000);
|
2010-01-23 11:23:47 +01:00
|
|
|
} else if (ret < 1)
|
2013-06-24 14:23:44 +02:00
|
|
|
return (ret < 0 && ret != AVERROR_EOF) ? ret : len;
|
2010-01-24 19:09:46 +01:00
|
|
|
if (ret)
|
2013-10-27 14:45:01 +01:00
|
|
|
fast_retries = FFMAX(fast_retries, 2);
|
2009-06-04 08:25:53 +02:00
|
|
|
len += ret;
|
2011-11-06 21:34:24 +01:00
|
|
|
if (ff_check_interrupt(&h->interrupt_callback))
|
2011-03-13 00:42:27 +01:00
|
|
|
return AVERROR_EXIT;
|
2009-06-04 08:25:53 +02:00
|
|
|
}
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
2011-03-31 16:31:43 +02:00
|
|
|
int ffurl_read(URLContext *h, unsigned char *buf, int size)
|
2011-02-04 19:12:37 +01:00
|
|
|
{
|
2011-04-20 16:09:46 +02:00
|
|
|
if (!(h->flags & AVIO_FLAG_READ))
|
2011-02-04 19:12:37 +01:00
|
|
|
return AVERROR(EIO);
|
|
|
|
return retry_transfer_wrapper(h, buf, size, 1, h->prot->url_read);
|
|
|
|
}
|
|
|
|
|
2011-03-31 16:40:31 +02:00
|
|
|
int ffurl_read_complete(URLContext *h, unsigned char *buf, int size)
|
2010-10-06 13:18:38 +02:00
|
|
|
{
|
2011-04-20 16:09:46 +02:00
|
|
|
if (!(h->flags & AVIO_FLAG_READ))
|
2011-02-04 19:12:37 +01:00
|
|
|
return AVERROR(EIO);
|
|
|
|
return retry_transfer_wrapper(h, buf, size, size, h->prot->url_read);
|
2010-10-06 13:18:38 +02:00
|
|
|
}
|
|
|
|
|
2011-03-31 16:48:01 +02:00
|
|
|
int ffurl_write(URLContext *h, const unsigned char *buf, int size)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
2011-04-15 16:42:09 +02:00
|
|
|
if (!(h->flags & AVIO_FLAG_WRITE))
|
2007-07-19 17:23:32 +02:00
|
|
|
return AVERROR(EIO);
|
2002-07-24 19:50:23 +02:00
|
|
|
/* avoid sending too big packets */
|
|
|
|
if (h->max_packet_size && size > h->max_packet_size)
|
2007-07-19 17:23:32 +02:00
|
|
|
return AVERROR(EIO);
|
2010-10-06 13:18:43 +02:00
|
|
|
|
2015-02-10 16:02:30 +01:00
|
|
|
return retry_transfer_wrapper(h, buf, size, size,
|
|
|
|
(int (*)(struct URLContext *, uint8_t *, int))
|
|
|
|
h->prot->url_write);
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
|
|
|
|
2011-03-31 17:30:31 +02:00
|
|
|
int64_t ffurl_seek(URLContext *h, int64_t pos, int whence)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
2008-10-03 12:16:29 +02:00
|
|
|
int64_t ret;
|
2001-07-22 16:18:56 +02:00
|
|
|
|
|
|
|
if (!h->prot->url_seek)
|
2010-04-18 19:37:16 +02:00
|
|
|
return AVERROR(ENOSYS);
|
2010-03-15 23:54:22 +01:00
|
|
|
ret = h->prot->url_seek(h, pos, whence & ~AVSEEK_FORCE);
|
2001-07-22 16:18:56 +02:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-03-31 17:36:06 +02:00
|
|
|
int ffurl_close(URLContext *h)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
2007-11-16 01:14:48 +01:00
|
|
|
int ret = 0;
|
2013-10-27 14:45:01 +01:00
|
|
|
if (!h)
|
|
|
|
return 0; /* can happen when ffurl_open fails */
|
2001-07-22 16:18:56 +02:00
|
|
|
|
2010-06-22 16:03:37 +02:00
|
|
|
if (h->is_connected && h->prot->url_close)
|
2007-11-16 01:14:48 +01:00
|
|
|
ret = h->prot->url_close(h);
|
2010-03-05 23:30:21 +01:00
|
|
|
#if CONFIG_NETWORK
|
2011-12-30 10:43:10 +01:00
|
|
|
if (h->prot->flags & URL_PROTOCOL_FLAG_NETWORK)
|
|
|
|
ff_network_close();
|
2010-03-05 23:30:21 +01:00
|
|
|
#endif
|
2011-11-08 23:48:40 +01:00
|
|
|
if (h->prot->priv_data_size) {
|
|
|
|
if (h->prot->priv_data_class)
|
|
|
|
av_opt_free(h->priv_data);
|
2010-06-22 16:09:08 +02:00
|
|
|
av_free(h->priv_data);
|
2011-11-08 23:48:40 +01:00
|
|
|
}
|
2002-05-19 01:11:09 +02:00
|
|
|
av_free(h);
|
2001-07-22 16:18:56 +02:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-04-08 18:32:25 +02:00
|
|
|
int avio_check(const char *url, int flags)
|
|
|
|
{
|
|
|
|
URLContext *h;
|
2011-11-06 21:50:44 +01:00
|
|
|
int ret = ffurl_alloc(&h, url, flags, NULL);
|
2011-04-08 18:32:25 +02:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
if (h->prot->url_check) {
|
|
|
|
ret = h->prot->url_check(h, flags);
|
|
|
|
} else {
|
2011-11-05 10:04:04 +01:00
|
|
|
ret = ffurl_connect(h, NULL);
|
2011-04-08 18:32:25 +02:00
|
|
|
if (ret >= 0)
|
|
|
|
ret = flags;
|
|
|
|
}
|
|
|
|
|
|
|
|
ffurl_close(h);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-03-31 17:46:00 +02:00
|
|
|
int64_t ffurl_size(URLContext *h)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
2008-10-03 12:16:29 +02:00
|
|
|
int64_t pos, size;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2013-10-27 14:45:01 +01:00
|
|
|
size = ffurl_seek(h, 0, AVSEEK_SIZE);
|
|
|
|
if (size < 0) {
|
2011-03-31 17:30:31 +02:00
|
|
|
pos = ffurl_seek(h, 0, SEEK_CUR);
|
|
|
|
if ((size = ffurl_seek(h, -1, SEEK_END)) < 0)
|
2007-01-30 11:37:52 +01:00
|
|
|
return size;
|
|
|
|
size++;
|
2011-03-31 17:30:31 +02:00
|
|
|
ffurl_seek(h, pos, SEEK_SET);
|
2007-01-01 22:49:09 +01:00
|
|
|
}
|
2001-07-22 16:18:56 +02:00
|
|
|
return size;
|
|
|
|
}
|
2002-07-24 19:50:23 +02:00
|
|
|
|
2011-03-31 17:51:24 +02:00
|
|
|
int ffurl_get_file_handle(URLContext *h)
|
2009-03-03 18:04:51 +01:00
|
|
|
{
|
|
|
|
if (!h->prot->url_get_file_handle)
|
|
|
|
return -1;
|
|
|
|
return h->prot->url_get_file_handle(h);
|
|
|
|
}
|
|
|
|
|
2012-08-17 18:38:59 +02:00
|
|
|
int ffurl_get_multi_file_handle(URLContext *h, int **handles, int *numhandles)
|
|
|
|
{
|
|
|
|
if (!h->prot->url_get_multi_file_handle) {
|
|
|
|
if (!h->prot->url_get_file_handle)
|
|
|
|
return AVERROR(ENOSYS);
|
2014-10-18 02:12:12 +02:00
|
|
|
*handles = av_malloc(sizeof(**handles));
|
2012-08-17 18:38:59 +02:00
|
|
|
if (!*handles)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
*numhandles = 1;
|
|
|
|
*handles[0] = h->prot->url_get_file_handle(h);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
return h->prot->url_get_multi_file_handle(h, handles, numhandles);
|
|
|
|
}
|
|
|
|
|
2012-05-21 11:24:54 +02:00
|
|
|
int ffurl_shutdown(URLContext *h, int flags)
|
|
|
|
{
|
|
|
|
if (!h->prot->url_shutdown)
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
return h->prot->url_shutdown(h, flags);
|
|
|
|
}
|
|
|
|
|
2011-11-06 21:10:21 +01:00
|
|
|
int ff_check_interrupt(AVIOInterruptCB *cb)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
if (cb && cb->callback && (ret = cb->callback(cb->opaque)))
|
|
|
|
return ret;
|
2011-11-07 11:17:50 +01:00
|
|
|
return 0;
|
2011-11-06 21:10:21 +01:00
|
|
|
}
|