#include "libavcodec/opt.h"
#include "os_support.h"
#include "avformat.h"
+#if CONFIG_NETWORK
+#include "network.h"
+#endif
#if LIBAVFORMAT_VERSION_MAJOR >= 53
/** @name Logging context. */
}
static const AVOption options[] = {{NULL}};
static const AVClass urlcontext_class =
- { "URLContext", urlcontext_to_name, options };
+ { "URLContext", urlcontext_to_name, options, LIBAVUTIL_VERSION_INT };
/*@}*/
#endif
else return first_protocol;
}
-int av_register_protocol(URLProtocol *protocol)
+int av_register_protocol2(URLProtocol *protocol, int size)
{
URLProtocol **p;
+ if (size < sizeof(URLProtocol)) {
+ URLProtocol* temp = av_mallocz(sizeof(URLProtocol));
+ memcpy(temp, protocol, size);
+ protocol = temp;
+ }
p = &first_protocol;
while (*p != NULL) p = &(*p)->next;
*p = protocol;
}
#if LIBAVFORMAT_VERSION_MAJOR < 53
+/* The layout of URLProtocol as of when major was bumped to 52 */
+struct URLProtocol_compat {
+ const char *name;
+ int (*url_open)(URLContext *h, const char *filename, int flags);
+ int (*url_read)(URLContext *h, unsigned char *buf, int size);
+ int (*url_write)(URLContext *h, unsigned char *buf, int size);
+ int64_t (*url_seek)(URLContext *h, int64_t pos, int whence);
+ int (*url_close)(URLContext *h);
+ struct URLProtocol *next;
+};
+
+int av_register_protocol(URLProtocol *protocol)
+{
+ return av_register_protocol2(protocol, sizeof(struct URLProtocol_compat));
+}
+
int register_protocol(URLProtocol *protocol)
{
return av_register_protocol(protocol);
}
#endif
-int url_open_protocol (URLContext **puc, struct URLProtocol *up,
- const char *filename, int flags)
+static int url_alloc_for_protocol (URLContext **puc, struct URLProtocol *up,
+ const char *filename, int flags)
{
URLContext *uc;
int err;
- uc = av_malloc(sizeof(URLContext) + strlen(filename) + 1);
+#if CONFIG_NETWORK
+ if (!ff_network_init())
+ return AVERROR(EIO);
+#endif
+ uc = av_mallocz(sizeof(URLContext) + strlen(filename) + 1);
if (!uc) {
err = AVERROR(ENOMEM);
goto fail;
uc->flags = flags;
uc->is_streamed = 0; /* default = not streamed */
uc->max_packet_size = 0; /* default: stream file */
- err = up->url_open(uc, filename, flags);
- if (err < 0) {
- av_free(uc);
- *puc = NULL;
- return err;
+ if (up->priv_data_size) {
+ uc->priv_data = av_mallocz(up->priv_data_size);
+ if (up->priv_data_class) {
+ *(const AVClass**)uc->priv_data = up->priv_data_class;
+ av_opt_set_defaults(uc->priv_data);
+ }
}
+ *puc = uc;
+ return 0;
+ fail:
+ *puc = NULL;
+#if CONFIG_NETWORK
+ ff_network_close();
+#endif
+ return err;
+}
+
+int url_connect(URLContext* uc)
+{
+ int err = uc->prot->url_open(uc, uc->filename, uc->flags);
+ if (err)
+ return err;
+ uc->is_connected = 1;
//We must be careful here as url_seek() could be slow, for example for http
- if( (flags & (URL_WRONLY | URL_RDWR))
- || !strcmp(up->name, "file"))
+ if( (uc->flags & (URL_WRONLY | URL_RDWR))
+ || !strcmp(uc->prot->name, "file"))
if(!uc->is_streamed && url_seek(uc, 0, SEEK_SET) < 0)
uc->is_streamed= 1;
- *puc = uc;
return 0;
+}
+
+int url_open_protocol (URLContext **puc, struct URLProtocol *up,
+ const char *filename, int flags)
+{
+ int ret;
+
+ ret = url_alloc_for_protocol(puc, up, filename, flags);
+ if (ret)
+ goto fail;
+ ret = url_connect(*puc);
+ if (!ret)
+ return 0;
fail:
+ url_close(*puc);
*puc = NULL;
- return err;
+ return ret;
}
-int url_open(URLContext **puc, const char *filename, int flags)
+#define URL_SCHEME_CHARS \
+ "abcdefghijklmnopqrstuvwxyz" \
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
+ "0123456789+-."
+
+int url_alloc(URLContext **puc, const char *filename, int flags)
{
URLProtocol *up;
- const char *p;
- char proto_str[128], *q;
-
- p = filename;
- q = proto_str;
- while (*p != '\0' && *p != ':') {
- /* protocols can only contain alphabetic chars */
- if (!isalpha(*p))
- goto file_proto;
- if ((q - proto_str) < sizeof(proto_str) - 1)
- *q++ = *p;
- p++;
- }
- /* if the protocol has length 1, we consider it is a dos drive */
- if (*p == '\0' || is_dos_path(filename)) {
- file_proto:
+ char proto_str[128];
+ size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
+
+ if (filename[proto_len] != ':' || is_dos_path(filename))
strcpy(proto_str, "file");
- } else {
- *q = '\0';
- }
+ else
+ av_strlcpy(proto_str, filename, FFMIN(proto_len+1, sizeof(proto_str)));
up = first_protocol;
while (up != NULL) {
if (!strcmp(proto_str, up->name))
- return url_open_protocol (puc, up, filename, flags);
+ return url_alloc_for_protocol (puc, up, filename, flags);
up = up->next;
}
*puc = NULL;
return AVERROR(ENOENT);
}
+int url_open(URLContext **puc, const char *filename, int flags)
+{
+ int ret = url_alloc(puc, filename, flags);
+ if (ret)
+ return ret;
+ ret = url_connect(*puc);
+ if (!ret)
+ return 0;
+ url_close(*puc);
+ *puc = NULL;
+ return ret;
+}
+
int url_read(URLContext *h, unsigned char *buf, int size)
{
int ret;
return len;
}
-int url_write(URLContext *h, unsigned char *buf, int size)
+int url_write(URLContext *h, const unsigned char *buf, int size)
{
int ret;
if (!(h->flags & (URL_WRONLY | URL_RDWR)))
int64_t ret;
if (!h->prot->url_seek)
- return AVERROR(EPIPE);
- ret = h->prot->url_seek(h, pos, whence);
+ return AVERROR(ENOSYS);
+ ret = h->prot->url_seek(h, pos, whence & ~AVSEEK_FORCE);
return ret;
}
int ret = 0;
if (!h) return 0; /* can happen when url_open fails */
- if (h->prot->url_close)
+ if (h->is_connected && h->prot->url_close)
ret = h->prot->url_close(h);
+#if CONFIG_NETWORK
+ ff_network_close();
+#endif
+ if (h->prot->priv_data_size)
+ av_free(h->priv_data);
av_free(h);
return ret;
}
projects / ffmpeg / blobdiff