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Merge commit '8075c3d8bb1f6aade0cc7c5c40db9bc1bcd84cab'

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* commit '8075c3d8bb1f6aade0cc7c5c40db9bc1bcd84cab':
  http: Add support reading ICY metadata

Conflicts:
	doc/protocols.texi
	libavformat/http.c

See: a92fbe16f2
See: 636273d3d4
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-03-12 03:16:21 +01:00
commit ca2369cdee
2 changed files with 71 additions and 40 deletions
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10
doc/protocols.texi
View File

@ -213,7 +213,7 @@ m3u8 files.
HTTP (Hyper Text Transfer Protocol).
This protocol accepts the following options.
This protocol accepts the following options:
@table @option
@item seekable
@ -257,12 +257,14 @@ the @option{icy_metadata_headers} and @option{icy_metadata_packet} options.
The default is 0.
@item icy_metadata_headers
If the server supports ICY metadata, this contains the ICY specific HTTP reply
headers, separated with newline characters.
If the server supports ICY metadata, this contains the ICY-specific HTTP reply
headers, separated by newline characters.
@item icy_metadata_packet
If the server supports ICY metadata, and @option{icy} was set to 1, this
contains the last non-empty metadata packet sent by the server.
contains the last non-empty metadata packet sent by the server. It should be
polled in regular intervals by applications interested in mid-stream metadata
updates.
@item cookies
Set the cookies to be sent in future requests. The format of each cookie is the

101
libavformat/http.c
View File

@ -54,8 +54,6 @@ typedef struct {
char *content_type;
char *user_agent;
int64_t off, filesize, req_end_offset;
int icy_data_read; ///< how much data was read since last ICY metadata packet
int icy_metaint; ///< after how many bytes of read data a new metadata packet will be found
char *location;
HTTPAuthState auth_state;
HTTPAuthState proxy_auth_state;
@ -78,6 +76,10 @@ typedef struct {
char *mime_type;
char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
int icy;
/* how much data was read since the last ICY metadata packet */
int icy_data_read;
/* after how many bytes of read data a new metadata packet will be found */
int icy_metaint;
char *icy_metadata_headers;
char *icy_metadata_packet;
#if CONFIG_ZLIB
@ -104,8 +106,8 @@ static const AVOption options[] = {
{"mime_type", "set MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, {0}, 0, 0, 0 },
{"cookies", "set cookies to be sent in applicable future requests, use newline delimited Set-Cookie HTTP field value syntax", OFFSET(cookies), AV_OPT_TYPE_STRING, {0}, 0, 0, D },
{"icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D },
{"icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, {0}, 0, 0, 0 },
{"icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, {0}, 0, 0, 0 },
{"icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
{"icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
{"auth_type", "HTTP authentication type", OFFSET(auth_state.auth_type), AV_OPT_TYPE_INT, {.i64 = HTTP_AUTH_NONE}, HTTP_AUTH_NONE, HTTP_AUTH_BASIC, D|E, "auth_type" },
{"none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, {.i64 = HTTP_AUTH_NONE}, 0, 0, D|E, "auth_type" },
{"basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, {.i64 = HTTP_AUTH_BASIC}, 0, 0, D|E, "auth_type" },
@ -403,6 +405,23 @@ static int parse_content_encoding(URLContext *h, char *p)
return 0;
}
// Concat all Icy- header lines
static int parse_icy(HTTPContext *s, const char *tag, const char *p)
{
int len = 4 + strlen(p) + strlen(tag);
int ret;
if (s->icy_metadata_headers)
len += strlen(s->icy_metadata_headers);
if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
return ret;
av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
return 0;
}
static int process_line(URLContext *h, char *line, int line_count,
int *new_location)
{
@ -489,13 +508,8 @@ static int process_line(URLContext *h, char *line, int line_count,
} else if (!av_strcasecmp (tag, "Icy-MetaInt")) {
s->icy_metaint = strtoll(p, NULL, 10);
} else if (!av_strncasecmp(tag, "Icy-", 4)) {
// Concat all Icy- header lines
char *buf = av_asprintf("%s%s: %s\n",
s->icy_metadata_headers ? s->icy_metadata_headers : "", tag, p);
if (!buf)
return AVERROR(ENOMEM);
av_freep(&s->icy_metadata_headers);
s->icy_metadata_headers = buf;
if ((ret = parse_icy(s, tag, p)) < 0)
return ret;
} else if (!av_strcasecmp(tag, "Content-Encoding")) {
if ((ret = parse_content_encoding(h, p)) < 0)
return ret;
@ -905,37 +919,52 @@ static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
return pos;
}
static int store_icy(URLContext *h, int size)
{
HTTPContext *s = h->priv_data;
/* until next metadata packet */
int remaining = s->icy_metaint - s->icy_data_read;
if (remaining < 0)
return AVERROR_INVALIDDATA;
if (!remaining) {
// The metadata packet is variable sized. It has a 1 byte header
// which sets the length of the packet (divided by 16). If it's 0,
// the metadata doesn't change. After the packet, icy_metaint bytes
// of normal data follow.
uint8_t ch;
int len = http_read_stream_all(h, &ch, 1);
if (len < 0)
return len;
if (ch > 0) {
char data[255 * 16 + 1];
int ret;
len = ch * 16;
ret = http_read_stream_all(h, data, len);
if (ret < 0)
return ret;
data[len + 1] = 0;
if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
return ret;
}
s->icy_data_read = 0;
remaining = s->icy_metaint;
}
return FFMIN(size, remaining);
}
static int http_read(URLContext *h, uint8_t *buf, int size)
{
HTTPContext *s = h->priv_data;
if (s->icy_metaint > 0) {
int remaining = s->icy_metaint - s->icy_data_read; /* until next metadata packet */
if (!remaining) {
// The metadata packet is variable sized. It has a 1 byte header
// which sets the length of the packet (divided by 16). If it's 0,
// the metadata doesn't change. After the packet, icy_metaint bytes
// of normal data follow.
uint8_t ch;
int len = http_read_stream_all(h, &ch, 1);
if (len < 1)
return len;
if (ch > 0) {
char data[255 * 16 + 1];
int ret;
len = ch * 16;
ret = http_read_stream_all(h, data, len);
if (ret < len)
return ret;
data[len + 1] = 0;
if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
return ret;
}
s->icy_data_read = 0;
remaining = s->icy_metaint;
}
size = FFMIN(size, remaining);
size = store_icy(h, size);
if (size < 0)
return size;
}
size = http_read_stream(h, buf, size);
if (size > 0)
s->icy_data_read += size;