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rtpvorbis/theoradepay: Fix handling of fragmented packets

Browse source 
This was broken in b1089fb520 by not considering the full packet length of a
fragmented packet but only the length of the first one.

https://bugzilla.gnome.org/show_bug.cgi?id=754417
This commit is contained in:
Sebastian Dröge 2015-09-02 21:12:41 +03:00
parent dad751644e
commit f0ca2f2ecb
2 changed files with 27 additions and 20 deletions
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22
gst/rtp/gstrtptheoradepay.c
View file

@ -407,7 +407,6 @@ gst_rtp_theora_depay_process (GstRTPBaseDepayload * depayload,
rtptheoradepay = GST_RTP_THEORA_DEPAY (depayload);
payload = gst_rtp_buffer_get_payload (rtp);
payload_len = gst_rtp_buffer_get_payload_len (rtp);
GST_DEBUG_OBJECT (depayload, "got RTP packet of size %d", payload_len);
@ -462,7 +461,6 @@ gst_rtp_theora_depay_process (GstRTPBaseDepayload * depayload,
/* fragmented packets, assemble */
if (F != 0) {
GstBuffer *vdata;
guint headerskip;
if (F == 1) {
/* if we start a packet, clear adapter and start assembling. */
@ -474,10 +472,8 @@ gst_rtp_theora_depay_process (GstRTPBaseDepayload * depayload,
if (!rtptheoradepay->assembling)
goto no_output;
/* first assembled packet, reuse 2 bytes to store the length */
headerskip = (F == 1 ? 4 : 6);
/* skip header and length. */
vdata = gst_rtp_buffer_get_payload_subbuffer (rtp, headerskip, -1);
vdata = gst_rtp_buffer_get_payload_subbuffer (rtp, 6, -1);
GST_DEBUG_OBJECT (depayload, "assemble theora packet");
gst_adapter_push (rtptheoradepay->adapter, vdata);
@ -487,9 +483,10 @@ gst_rtp_theora_depay_process (GstRTPBaseDepayload * depayload,
goto no_output;
/* construct assembled buffer */
payload_buffer =
gst_adapter_take_buffer (rtptheoradepay->adapter, payload_len);
length = gst_adapter_available (rtptheoradepay->adapter);
payload_buffer = gst_adapter_take_buffer (rtptheoradepay->adapter, length);
} else {
length = 0;
payload_buffer = gst_rtp_buffer_get_payload_subbuffer (rtp, 4, -1);
}
@ -519,8 +516,15 @@ gst_rtp_theora_depay_process (GstRTPBaseDepayload * depayload,
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+*
*/
while (payload_len >= 2) {
payload += 2;
payload_len -= 2;
/* If length is not 0, we have a reassembled packet for which we
* calculated the length already and don't have to skip over the
* length field anymore
*/
if (length == 0) {
length = GST_READ_UINT16_BE (payload);
payload += 2;
payload_len -= 2;
}
GST_DEBUG_OBJECT (depayload, "read length %u, avail: %d", length,
payload_len);

25
gst/rtp/gstrtpvorbisdepay.c
View file

@ -454,7 +454,6 @@ gst_rtp_vorbis_depay_process (GstRTPBaseDepayload * depayload,
rtpvorbisdepay = GST_RTP_VORBIS_DEPAY (depayload);
payload = gst_rtp_buffer_get_payload (rtp);
payload_len = gst_rtp_buffer_get_payload_len (rtp);
GST_DEBUG_OBJECT (depayload, "got RTP packet of size %d", payload_len);
@ -463,6 +462,7 @@ gst_rtp_vorbis_depay_process (GstRTPBaseDepayload * depayload,
if (G_UNLIKELY (payload_len < 4))
goto packet_short;
payload = gst_rtp_buffer_get_payload (rtp);
header = GST_READ_UINT32_BE (payload);
/*
* 0 1 2 3
@ -510,7 +510,6 @@ gst_rtp_vorbis_depay_process (GstRTPBaseDepayload * depayload,
/* fragmented packets, assemble */
if (F != 0) {
GstBuffer *vdata;
guint headerskip;
if (F == 1) {
/* if we start a packet, clear adapter and start assembling. */
@ -522,10 +521,8 @@ gst_rtp_vorbis_depay_process (GstRTPBaseDepayload * depayload,
if (!rtpvorbisdepay->assembling)
goto no_output;
/* first assembled packet, reuse 2 bytes to store the length */
headerskip = (F == 1 ? 4 : 6);
/* skip header and length. */
vdata = gst_rtp_buffer_get_payload_subbuffer (rtp, headerskip, -1);
vdata = gst_rtp_buffer_get_payload_subbuffer (rtp, 6, -1);
GST_DEBUG_OBJECT (depayload, "assemble vorbis packet");
gst_adapter_push (rtpvorbisdepay->adapter, vdata);
@ -535,10 +532,11 @@ gst_rtp_vorbis_depay_process (GstRTPBaseDepayload * depayload,
goto no_output;
/* construct assembled buffer */
payload_buffer =
gst_adapter_take_buffer (rtpvorbisdepay->adapter, payload_len);
length = gst_adapter_available (rtpvorbisdepay->adapter);
payload_buffer = gst_adapter_take_buffer (rtpvorbisdepay->adapter, length);
} else {
payload_buffer = gst_rtp_buffer_get_payload_subbuffer (rtp, 4, -1);
length = 0;
}
GST_DEBUG_OBJECT (depayload, "assemble done");
@ -567,10 +565,15 @@ gst_rtp_vorbis_depay_process (GstRTPBaseDepayload * depayload,
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+*
*/
while (payload_len > 2) {
length = GST_READ_UINT16_BE (payload);
payload += 2;
payload_len -= 2;
/* If length is not 0, we have a reassembled packet for which we
* calculated the length already and don't have to skip over the
* length field anymore
*/
if (length == 0) {
length = GST_READ_UINT16_BE (payload);
payload += 2;
payload_len -= 2;
}
GST_DEBUG_OBJECT (depayload, "read length %u, avail: %d", length,
payload_len);