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Merge commit '324b23dde1bc8638959eb32419c95a93906db272'

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* commit '324b23dde1bc8638959eb32419c95a93906db272':
  rtmpproto: Add function to read a number response

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-10-17 15:21:26 +02:00
commit 6cf9d02cea
1 changed files with 42 additions and 3 deletions
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45
libavformat/rtmpproto.c
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@ -1956,6 +1956,45 @@ static int send_invoke_response(URLContext *s, RTMPPacket *pkt)
return ret;
}
/**
* Read the AMF_NUMBER response ("_result") to a function call
* (e.g. createStream()). This response should be made up of the AMF_STRING
* "result", a NULL object and then the response encoded as AMF_NUMBER. On a
* successful response, we will return set the value to number (otherwise number
* will not be changed).
*
* @return 0 if reading the value succeeds, negative value otherwiss
*/
static int read_number_result(RTMPPacket *pkt, double *number)
{
// We only need to fit "_result" in this.
uint8_t strbuffer[8];
int stringlen;
double numbuffer;
GetByteContext gbc;
bytestream2_init(&gbc, pkt->data, pkt->size);
// Value 1/4: "_result" as AMF_STRING
if (ff_amf_read_string(&gbc, strbuffer, sizeof(strbuffer), &stringlen))
return AVERROR_INVALIDDATA;
if (strcmp(strbuffer, "_result"))
return AVERROR_INVALIDDATA;
// Value 2/4: The callee reference number
if (ff_amf_read_number(&gbc, &numbuffer))
return AVERROR_INVALIDDATA;
// Value 3/4: Null
if (ff_amf_read_null(&gbc))
return AVERROR_INVALIDDATA;
// Value 4/4: The resonse as AMF_NUMBER
if (ff_amf_read_number(&gbc, &numbuffer))
return AVERROR_INVALIDDATA;
else
*number = numbuffer;
return 0;
}
static int handle_invoke_result(URLContext *s, RTMPPacket *pkt)
{
RTMPContext *rt = s->priv_data;
@ -1997,11 +2036,11 @@ static int handle_invoke_result(URLContext *s, RTMPPacket *pkt)
}
}
} else if (!strcmp(tracked_method, "createStream")) {
//extract a number from the result
if (pkt->data[10] || pkt->data[19] != 5 || pkt->data[20]) {
double stream_id;
if (read_number_result(pkt, &stream_id)) {
av_log(s, AV_LOG_WARNING, "Unexpected reply on connect()\n");
} else {
rt->stream_id = av_int2double(AV_RB64(pkt->data + 21));
rt->stream_id = stream_id;
}
if (!rt->is_input) {