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avio: add support for passing options to protocols.

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Not used anywhere yet, support for passing options from avio_open() will
follow.
This commit is contained in:
Anton Khirnov 2011-11-05 10:04:04 +01:00
parent 163a31136d
commit ddffc2fdc3
18 changed files with 98 additions and 38 deletions
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6
libavformat/applehttp.c
View File

@ -324,14 +324,14 @@ static int open_input(struct variant *var)
struct segment *seg = var->segments[var->cur_seq_no - var->start_seq_no];
if (seg->key_type == KEY_NONE) {
return ffurl_open(&var->input, seg->url, AVIO_FLAG_READ,
&var->parent->interrupt_callback);
&var->parent->interrupt_callback, NULL);
} else if (seg->key_type == KEY_AES_128) {
char iv[33], key[33], url[MAX_URL_SIZE];
int ret;
if (strcmp(seg->key, var->key_url)) {
URLContext *uc;
if (ffurl_open(&uc, seg->key, AVIO_FLAG_READ,
&var->parent->interrupt_callback) == 0) {
&var->parent->interrupt_callback, NULL) == 0) {
if (ffurl_read_complete(uc, var->key, sizeof(var->key))
!= sizeof(var->key)) {
av_log(NULL, AV_LOG_ERROR, "Unable to read key file %s\n",
@ -356,7 +356,7 @@ static int open_input(struct variant *var)
return ret;
av_opt_set(var->input->priv_data, "key", key, 0);
av_opt_set(var->input->priv_data, "iv", iv, 0);
if ((ret = ffurl_connect(var->input)) < 0) {
if ((ret = ffurl_connect(var->input, NULL)) < 0) {
ffurl_close(var->input);
var->input = NULL;
return ret;

2
libavformat/applehttpproto.c
View File

@ -275,7 +275,7 @@ retry:
url = s->segments[s->cur_seq_no - s->start_seq_no]->url,
av_log(h, AV_LOG_DEBUG, "opening %s\n", url);
ret = ffurl_open(&s->seg_hd, url, AVIO_FLAG_READ,
&h->interrupt_callback);
&h->interrupt_callback, NULL);
if (ret < 0) {
if (ff_check_interrupt(&h->interrupt_callback))
return AVERROR_EXIT;

55
libavformat/avio.c
View File

@ -22,6 +22,7 @@
#include <unistd.h>
#include "libavutil/avstring.h"
#include "libavutil/dict.h"
#include "libavutil/opt.h"
#include "os_support.h"
#include "avformat.h"
@ -45,12 +46,40 @@ static const char *urlcontext_to_name(void *ptr)
if(h->prot) return h->prot->name;
else return "NULL";
}
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)
{
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;
}
static const AVOption options[] = {{NULL}};
static const AVClass urlcontext_class = {
.class_name = "URLContext",
.item_name = urlcontext_to_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
.child_next = urlcontext_child_next,
.child_class_next = urlcontext_child_class_next,
};
/*@}*/
@ -133,9 +162,13 @@ static int url_alloc_for_protocol (URLContext **puc, struct URLProtocol *up,
return err;
}
int ffurl_connect(URLContext* uc)
int ffurl_connect(URLContext* uc, AVDictionary **options)
{
int err = uc->prot->url_open(uc, uc->filename, uc->flags);
int err =
#if !FF_API_OLD_AVIO
uc->prot->url_open2 ? uc->prot->url_open2(uc, uc->filename, uc->flags, options) :
#endif
uc->prot->url_open(uc, uc->filename, uc->flags);
if (err)
return err;
uc->is_connected = 1;
@ -156,7 +189,7 @@ int url_open_protocol (URLContext **puc, struct URLProtocol *up,
ret = url_alloc_for_protocol(puc, up, filename, flags, NULL);
if (ret)
goto fail;
ret = ffurl_connect(*puc);
ret = ffurl_connect(*puc, NULL);
if (!ret)
return 0;
fail:
@ -170,11 +203,11 @@ int url_alloc(URLContext **puc, const char *filename, int flags)
}
int url_connect(URLContext* uc)
{
return ffurl_connect(uc);
return ffurl_connect(uc, NULL);
}
int url_open(URLContext **puc, const char *filename, int flags)
{
return ffurl_open(puc, filename, flags, NULL);
return ffurl_open(puc, filename, flags, NULL, NULL);
}
int url_read(URLContext *h, unsigned char *buf, int size)
{
@ -255,14 +288,18 @@ int ffurl_alloc(URLContext **puc, const char *filename, int flags,
}
int ffurl_open(URLContext **puc, const char *filename, int flags,
const AVIOInterruptCB *int_cb)
const AVIOInterruptCB *int_cb, AVDictionary **options)
{
int ret = ffurl_alloc(puc, filename, flags, int_cb);
if (ret)
return ret;
ret = ffurl_connect(*puc);
if (options && (*puc)->prot->priv_data_class &&
(ret = av_opt_set_dict((*puc)->priv_data, options)) < 0)
goto fail;
ret = ffurl_connect(*puc, options);
if (!ret)
return 0;
fail:
ffurl_close(*puc);
*puc = NULL;
return ret;
@ -356,7 +393,7 @@ int ffurl_close(URLContext *h)
int url_exist(const char *filename)
{
URLContext *h;
if (ffurl_open(&h, filename, AVIO_FLAG_READ, NULL) < 0)
if (ffurl_open(&h, filename, AVIO_FLAG_READ, NULL, NULL) < 0)
return 0;
ffurl_close(h);
return 1;
@ -373,7 +410,7 @@ int avio_check(const char *url, int flags)
if (h->prot->url_check) {
ret = h->prot->url_check(h, flags);
} else {
ret = ffurl_connect(h);
ret = ffurl_connect(h, NULL);
if (ret >= 0)
ret = flags;
}

2
libavformat/aviobuf.c
View File

@ -932,7 +932,7 @@ int avio_open(AVIOContext **s, const char *filename, int flags)
URLContext *h;
int err;
err = ffurl_open(&h, filename, flags, NULL);
err = ffurl_open(&h, filename, flags, NULL, NULL);
if (err < 0)
return err;
err = ffio_fdopen(s, h);

3
libavformat/concat.c
View File

@ -101,7 +101,8 @@ static av_cold int concat_open(URLContext *h, const char *uri, int flags)
uri += len + strspn(uri+len, AV_CAT_SEPARATOR);
/* creating URLContext */
if ((err = ffurl_open(&uc, node_uri, flags, &h->interrupt_callback)) < 0)
if ((err = ffurl_open(&uc, node_uri, flags,
&h->interrupt_callback, NULL)) < 0)
break;
/* creating size */

2
libavformat/crypto.c
View File

@ -83,7 +83,7 @@ static int crypto_open(URLContext *h, const char *uri, int flags)
goto err;
}
if ((ret = ffurl_open(&c->hd, nested_url, AVIO_FLAG_READ,
&h->interrupt_callback)) < 0) {
&h->interrupt_callback, NULL)) < 0) {
av_log(h, AV_LOG_ERROR, "Unable to open input\n");
goto err;
}

3
libavformat/gopher.c
View File

@ -100,7 +100,8 @@ static int gopher_open(URLContext *h, const char *uri, int flags)
ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
s->hd = NULL;
err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE, &h->interrupt_callback);
err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE,
&h->interrupt_callback, NULL);
if (err < 0)
goto fail;

3
libavformat/http.c
View File

@ -133,7 +133,8 @@ static int http_open_cnx(URLContext *h)
port = 80;
ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
err = ffurl_open(&hd, buf, AVIO_FLAG_READ_WRITE, &h->interrupt_callback);
err = ffurl_open(&hd, buf, AVIO_FLAG_READ_WRITE,
&h->interrupt_callback, NULL);
if (err < 0)
goto fail;

3
libavformat/md5proto.c
View File

@ -65,7 +65,8 @@ static int md5_close(URLContext *h)
av_strstart(filename, "md5:", &filename);
if (*filename) {
err = ffurl_open(&out, filename, AVIO_FLAG_WRITE, &h->interrupt_callback);
err = ffurl_open(&out, filename, AVIO_FLAG_WRITE,
&h->interrupt_callback, NULL);
if (err)
return err;
err = ffurl_write(out, buf, i*2+1);

4
libavformat/mmsh.c
View File

@ -249,7 +249,7 @@ static int mmsh_open(URLContext *h, const char *uri, int flags)
host, port, mmsh->request_seq++);
av_opt_set(mms->mms_hd->priv_data, "headers", headers, 0);
err = ffurl_connect(mms->mms_hd);
err = ffurl_connect(mms->mms_hd, NULL);
if (err) {
goto fail;
}
@ -296,7 +296,7 @@ static int mmsh_open(URLContext *h, const char *uri, int flags)
av_dlog(NULL, "out_buffer is %s", headers);
av_opt_set(mms->mms_hd->priv_data, "headers", headers, 0);
err = ffurl_connect(mms->mms_hd);
err = ffurl_connect(mms->mms_hd, NULL);
if (err) {
goto fail;
}

2
libavformat/mmst.c
View File

@ -524,7 +524,7 @@ static int mms_open(URLContext *h, const char *uri, int flags)
// establish tcp connection.
ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, mmst->host, port, NULL);
err = ffurl_open(&mms->mms_hd, tcpname, AVIO_FLAG_READ_WRITE,
&h->interrupt_callback);
&h->interrupt_callback, NULL);
if (err)
goto fail;

2
libavformat/rtmpproto.c
View File

@ -818,7 +818,7 @@ static int rtmp_open(URLContext *s, const char *uri, int flags)
ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
if (ffurl_open(&rt->stream, buf, AVIO_FLAG_READ_WRITE,
&s->interrupt_callback) < 0) {
&s->interrupt_callback, NULL) < 0) {
av_log(s , AV_LOG_ERROR, "Cannot open connection %s\n", buf);
goto fail;
}

4
libavformat/rtpproto.c
View File

@ -188,7 +188,7 @@ static int rtp_open(URLContext *h, const char *uri, int flags)
build_udp_url(buf, sizeof(buf),
hostname, rtp_port, local_rtp_port, ttl, max_packet_size,
connect);
if (ffurl_open(&s->rtp_hd, buf, flags, &h->interrupt_callback) < 0)
if (ffurl_open(&s->rtp_hd, buf, flags, &h->interrupt_callback, NULL) < 0)
goto fail;
if (local_rtp_port>=0 && local_rtcp_port<0)
local_rtcp_port = ff_udp_get_local_port(s->rtp_hd) + 1;
@ -196,7 +196,7 @@ static int rtp_open(URLContext *h, const char *uri, int flags)
build_udp_url(buf, sizeof(buf),
hostname, rtcp_port, local_rtcp_port, ttl, max_packet_size,
connect);
if (ffurl_open(&s->rtcp_hd, buf, flags, &h->interrupt_callback) < 0)
if (ffurl_open(&s->rtcp_hd, buf, flags, &h->interrupt_callback, NULL) < 0)
goto fail;
/* just to ease handle access. XXX: need to suppress direct handle

14
libavformat/rtsp.c
View File

@ -1160,7 +1160,7 @@ int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
/* we will use two ports per rtp stream (rtp and rtcp) */
j += 2;
if (ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
&s->interrupt_callback) == 0)
&s->interrupt_callback, NULL) == 0)
goto rtp_opened;
}
}
@ -1308,7 +1308,7 @@ int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
port, "?ttl=%d", ttl);
if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
&s->interrupt_callback) < 0) {
&s->interrupt_callback, NULL) < 0) {
err = AVERROR_INVALIDDATA;
goto fail;
}
@ -1468,7 +1468,7 @@ redirect:
av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
/* complete the connection */
if (ffurl_connect(rt->rtsp_hd)) {
if (ffurl_connect(rt->rtsp_hd, NULL)) {
err = AVERROR(EIO);
goto fail;
}
@ -1511,7 +1511,7 @@ redirect:
ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
/* complete the connection */
if (ffurl_connect(rt->rtsp_hd_out)) {
if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
err = AVERROR(EIO);
goto fail;
}
@ -1519,7 +1519,7 @@ redirect:
/* open the tcp connection */
ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
&s->interrupt_callback) < 0) {
&s->interrupt_callback, NULL) < 0) {
err = AVERROR(EIO);
goto fail;
}
@ -1868,7 +1868,7 @@ static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
rtsp_st->sdp_ttl,
rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
&s->interrupt_callback) < 0) {
&s->interrupt_callback, NULL) < 0) {
err = AVERROR_INVALIDDATA;
goto fail;
}
@ -1933,7 +1933,7 @@ static int rtp_read_header(AVFormatContext *s,
return AVERROR(EIO);
ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
&s->interrupt_callback);
&s->interrupt_callback, NULL);
if (ret)
goto fail;

3
libavformat/sapdec.c
View File

@ -85,7 +85,8 @@ static int sap_read_header(AVFormatContext *s,
ff_url_join(url, sizeof(url), "udp", NULL, host, port, "?localport=%d",
port);
ret = ffurl_open(&sap->ann_fd, url, AVIO_FLAG_READ, &s->interrupt_callback);
ret = ffurl_open(&sap->ann_fd, url, AVIO_FLAG_READ,
&s->interrupt_callback, NULL);
if (ret)
goto fail;

5
libavformat/sapenc.c
View File

@ -146,7 +146,7 @@ static int sap_write_header(AVFormatContext *s)
"?ttl=%d", ttl);
if (!same_port)
base_port += 2;
ret = ffurl_open(&fd, url, AVIO_FLAG_WRITE, &s->interrupt_callback);
ret = ffurl_open(&fd, url, AVIO_FLAG_WRITE, &s->interrupt_callback, NULL);
if (ret) {
ret = AVERROR(EIO);
goto fail;
@ -158,7 +158,8 @@ static int sap_write_header(AVFormatContext *s)
ff_url_join(url, sizeof(url), "udp", NULL, announce_addr, port,
"?ttl=%d&connect=1", ttl);
ret = ffurl_open(&sap->ann_fd, url, AVIO_FLAG_WRITE, &s->interrupt_callback);
ret = ffurl_open(&sap->ann_fd, url, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL);
if (ret) {
ret = AVERROR(EIO);
goto fail;

3
libavformat/tls.c
View File

@ -123,7 +123,8 @@ static int tls_open(URLContext *h, const char *uri, int flags)
freeaddrinfo(ai);
}
ret = ffurl_open(&c->tcp, buf, AVIO_FLAG_READ_WRITE, &h->interrupt_callback);
ret = ffurl_open(&c->tcp, buf, AVIO_FLAG_READ_WRITE,
&h->interrupt_callback, NULL);
if (ret)
goto fail;
c->fd = ffurl_get_file_handle(c->tcp);

20
libavformat/url.h
View File

@ -28,6 +28,8 @@
#include "avio.h"
#include "libavformat/version.h"
#include "libavutil/dict.h"
#if !FF_API_OLD_AVIO
#define URL_PROTOCOL_FLAG_NESTED_SCHEME 1 /*< The protocol name can be the first part of a nested protocol scheme */
@ -48,6 +50,12 @@ typedef struct URLContext {
typedef struct URLProtocol {
const char *name;
int (*url_open)( URLContext *h, const char *url, int flags);
/**
* This callback is to be used by protocols which open further nested
* protocols. options are then to be passed to ffurl_open()/ffurl_connect()
* for those nested protocols.
*/
int (*url_open2)(URLContext *h, const char *url, int flags, AVDictionary **options);
int (*url_read)( URLContext *h, unsigned char *buf, int size);
int (*url_write)(URLContext *h, const unsigned char *buf, int size);
int64_t (*url_seek)( URLContext *h, int64_t pos, int whence);
@ -82,8 +90,13 @@ int ffurl_alloc(URLContext **puc, const char *filename, int flags,
/**
* Connect an URLContext that has been allocated by ffurl_alloc
*
* @param options A dictionary filled with options for nested protocols,
* i.e. it will be passed to url_open2() for protocols implementing it.
* This parameter will be destroyed and replaced with a dict containing options
* that were not found. May be NULL.
*/
int ffurl_connect(URLContext *uc);
int ffurl_connect(URLContext *uc, AVDictionary **options);
/**
* Create an URLContext for accessing to the resource indicated by
@ -95,11 +108,14 @@ int ffurl_connect(URLContext *uc);
* is to be opened
* @param int_cb interrupt callback to use for the URLContext, may be
* NULL
* @param options A dictionary filled with protocol-private options. On return
* this parameter will be destroyed and replaced with a dict containing options
* that were not found. May be NULL.
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code in case of failure
*/
int ffurl_open(URLContext **puc, const char *filename, int flags,
const AVIOInterruptCB *int_cb);
const AVIOInterruptCB *int_cb, AVDictionary **options);
/**
* Read up to size bytes from the resource accessed by h, and store