static const AVClass *urlcontext_child_class_next(const AVClass *prev)
{
URLProtocol *p = NULL;
/* find the protocol that corresponds to prev */
while (prev && (p = ffurl_protocol_next(p)))
if (p->priv_data_class == prev)
break;
/* find next protocol with priv options */
while (p = ffurl_protocol_next(p))
if (p->priv_data_class)
return p->priv_data_class;
return NULL;
}
int ffurl_alloc(URLContext **puc, const char *filename, int flags,
const AVIOInterruptCB *int_cb)
{
URLProtocol *up = NULL;
char proto_str[128], proto_nested[128], *ptr;
size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
if (!first_protocol) {
av_log(NULL, AV_LOG_WARNING, "No URL Protocols are registered. "
"Missing call to av_register_all()?\n");
}
if (filename[proto_len] != ':' && filename[proto_len] != ',' || is_dos_path(filename))
strcpy(proto_str, "file");
else
av_strlcpy(proto_str, filename, FFMIN(proto_len+1, sizeof(proto_str)));
if ((ptr = strchr(proto_str, ',')))
*ptr = '\0';
av_strlcpy(proto_nested, proto_str, sizeof(proto_nested));
if ((ptr = strchr(proto_nested, '+')))
*ptr = '\0';
while (up = ffurl_protocol_next(up)) {
if (!strcmp(proto_str, up->name))
return url_alloc_for_protocol (puc, up, filename, flags, int_cb);
if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
!strcmp(proto_nested, up->name))
return url_alloc_for_protocol (puc, up, filename, flags, int_cb);
}
*puc = NULL;
return AVERROR_PROTOCOL_NOT_FOUND;
}
static struct URLProtocol *url_find_protocol(const char *filename)
{
URLProtocol *up = NULL;
char proto_str[128], proto_nested[128], *ptr;
size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
if (filename[proto_len] != ':' &&
(filename[proto_len] != ',' || !strchr(filename + proto_len + 1, ':')) ||
is_dos_path(filename))
strcpy(proto_str, "file");
else
av_strlcpy(proto_str, filename,
FFMIN(proto_len + 1, sizeof(proto_str)));
if ((ptr = strchr(proto_str, ',')))
*ptr = '\0';
av_strlcpy(proto_nested, proto_str, sizeof(proto_nested));
if ((ptr = strchr(proto_nested, '+')))
*ptr = '\0';
while (up = ffurl_protocol_next(up)) {
if (!strcmp(proto_str, up->name))
break;
if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
!strcmp(proto_nested, up->name))
break;
}
return up;
}
void ADM_lavFormatInit(void)
{
av_register_all();
// Make sure avformat is correctly configured
const char* formats[] = {"mpegts", "dvd", "vcd", "svcd", "mp4", "psp", "flv", "matroska"};
AVOutputFormat *avfmt;
for (int i = 0; i < 8; i++)
{
avfmt = av_guess_format(formats[i], NULL, NULL);
if (avfmt == NULL)
{
printf("Error: %s muxer isn't registered\n", formats[i]);
ADM_assert(0);
}
}
URLProtocol *up = ffurl_protocol_next(NULL);
if (strcmp(up->name, "file") != 0)
{
printf("Error: file protocol isn't registered\n");
ADM_assert(0);
}
}
int ffurl_alloc(URLContext **puc, const char *filename, int flags,
const AVIOInterruptCB *int_cb)
{
URLProtocol *up = NULL;
char proto_str[128], proto_nested[128], *ptr;
size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
if (filename[proto_len] != ':' || is_dos_path(filename))
strcpy(proto_str, "file");
else
av_strlcpy(proto_str, filename, FFMIN(proto_len+1, sizeof(proto_str)));
av_strlcpy(proto_nested, proto_str, sizeof(proto_nested));
if ((ptr = strchr(proto_nested, '+')))
*ptr = '\0';
while (up = ffurl_protocol_next(up)) {
if (!strcmp(proto_str, up->name))
return url_alloc_for_protocol (puc, up, filename, flags, int_cb);
if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
!strcmp(proto_nested, up->name))
return url_alloc_for_protocol (puc, up, filename, flags, int_cb);
}
*puc = NULL;
return AVERROR(ENOENT);
}
const char *avio_enum_protocols(void **opaque, int output)
{
URLProtocol **p = (URLProtocol **)opaque;
*p = ffurl_protocol_next(*p);
if (!*p) return NULL;
if ((output && (*p)->url_write) || (!output && (*p)->url_read))
return (*p)->name;
return avio_enum_protocols(opaque, output);
}
const char *avio_enum_protocols(void **opaque, int output)
{
URLProtocol *p;
*opaque = ffurl_protocol_next(*opaque);
if (!(p = *opaque)) return NULL;
if ((output && p->url_write) || (!output && p->url_read))
return p->name;
return avio_enum_protocols(opaque, output);
}
static struct URLProtocol *ijkav_find_protocol(const char *proto_name)
{
URLProtocol *up = NULL;
if (!proto_name)
return NULL;
while ((up = ffurl_protocol_next(up)) != NULL) {
if (!up->name)
continue;
if (!strcmp(proto_name, up->name))
break;
}
return up;
}
static const struct URLProtocol *url_find_protocol(const char *filename)
{
const URLProtocol **protocols;
char proto_str[128], proto_nested[128], *ptr;
size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
int i;
if (filename[proto_len] != ':' &&
(strncmp(filename, "subfile,", 8) || !strchr(filename + proto_len + 1, ':')) ||
is_dos_path(filename))
strcpy(proto_str, "file");
else
av_strlcpy(proto_str, filename,
FFMIN(proto_len + 1, sizeof(proto_str)));
if ((ptr = strchr(proto_str, ',')))
*ptr = '\0';
av_strlcpy(proto_nested, proto_str, sizeof(proto_nested));
if ((ptr = strchr(proto_nested, '+')))
*ptr = '\0';
protocols = ffurl_get_protocols(NULL, NULL);
if (!protocols)
return NULL;
for (i = 0; protocols[i]; i++) {
const URLProtocol *up = protocols[i];
if (!strcmp(proto_str, up->name)) {
av_freep(&protocols);
return up;
}
if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
!strcmp(proto_nested, up->name)) {
av_freep(&protocols);
return up;
}
}
av_freep(&protocols);
const URLProtocol *up = NULL;
while (up = ffurl_protocol_next(up)) {
if (!strcmp(proto_str, up->name))
break;
if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
!strcmp(proto_nested, up->name))
break;
}
return up;
}
