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Code Issues 1 Projects Releases Wiki Activity

rtph264depay, rtph265depay: various parameter-set string handling fixes

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7813>
This commit is contained in:
Sebastian Dröge 2024-10-31 17:46:40 +02:00 committed by Backport Bot
parent 718ed88290
commit 0d4aeb3efd
2 changed files with 88 additions and 30 deletions
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36
subprojects/gst-plugins-good/gst/rtp/gstrtph264depay.c
View file

@ -646,6 +646,9 @@ gst_rtp_h264_add_sps_pps (GstElement * rtph264, GPtrArray * sps_array,
gst_buffer_map (nal, &map, GST_MAP_READ);
if (map.size == 0)
goto drop;
type = map.data[0] & 0x1f;
if (type == 7) {
@ -788,7 +791,12 @@ gst_rtp_h264_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
* front of the params. */
len = 0;
for (i = 0; params[i]; i++) {
len += strlen (params[i]);
gsize nal_len = strlen (params[i]);
if (nal_len == 0) {
GST_WARNING_OBJECT (depayload, "empty param (#%d)", i);
continue;
}
len += nal_len;
len += sizeof (sync_bytes);
}
/* we seriously overshoot the length, but it's fine. */
@ -800,13 +808,20 @@ gst_rtp_h264_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
for (i = 0; params[i]; i++) {
guint save = 0;
gint state = 0;
gsize nal_len = strlen (params[i]);
if (nal_len == 0)
continue;
GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
memcpy (ptr, sync_bytes, sizeof (sync_bytes));
ptr += sizeof (sync_bytes);
len =
g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
&save);
len = g_base64_decode_step (params[i], nal_len, ptr, &state, &save);
if (len == 0) {
GST_WARNING_OBJECT (depayload, "failed decoding param %d", i);
ptr -= sizeof (sync_bytes);
continue;
}
GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
total += len + sizeof (sync_bytes);
ptr += len;
@ -815,12 +830,16 @@ gst_rtp_h264_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
gst_buffer_resize (codec_data, 0, total);
g_strfreev (params);
if (total > 0) {
/* keep the codec_data, we need to send it as the first buffer. We cannot
* push it in the adapter because the adapter might be flushed on discont.
*/
if (rtph264depay->codec_data)
gst_buffer_unref (rtph264depay->codec_data);
rtph264depay->codec_data = codec_data;
} else {
gst_buffer_unref (codec_data);
}
} else if (!rtph264depay->byte_stream) {
gchar **params;
gint i;
@ -842,7 +861,7 @@ gst_rtp_h264_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
nal_len = strlen (params[i]);
if (nal_len == 0) {
GST_WARNING_OBJECT (depayload, "empty param '%s' (#%d)", params[i], i);
GST_WARNING_OBJECT (depayload, "empty param (#%d)", i);
continue;
}
nal = gst_buffer_new_and_alloc (nal_len);
@ -851,13 +870,20 @@ gst_rtp_h264_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
nal_len =
g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
if (nal_len > 0) {
GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
((nalmap.data[0] & 0x1f) == 7) ? "SPS" : "PPS");
}
gst_buffer_unmap (nal, &nalmap);
gst_buffer_set_size (nal, nal_len);
if (nal_len > 0) {
gst_rtp_h264_depay_add_sps_pps (rtph264depay, nal);
} else {
GST_WARNING_OBJECT (depayload, "failed decoding param %d", i);
gst_buffer_unref (nal);
}
}
g_strfreev (params);

42
subprojects/gst-plugins-good/gst/rtp/gstrtph265depay.c
View file

@ -674,9 +674,18 @@ gst_rtp_h265_add_vps_sps_pps (GstElement * rtph265, GPtrArray * vps_array,
gst_buffer_map (nal, &map, GST_MAP_READ);
if (map.size == 0)
goto drop;
type = (map.data[0] >> 1) & 0x3f;
if (type == GST_H265_VPS_NUT) {
if (map.size < 3) {
GST_WARNING_OBJECT (rtph265, "Invalid VPS,"
" can't parse seq_parameter_set_id");
goto drop;
}
guint32 vps_id = (map.data[2] >> 4) & 0x0f;
for (i = 0; i < vps_array->len; i++) {
@ -852,7 +861,12 @@ gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
* front of the params. */
len = 0;
for (i = 0; params[i]; i++) {
len += strlen (params[i]);
gsize nal_len = strlen (params[i]);
if (nal_len == 0) {
GST_WARNING_OBJECT (depayload, "empty param (#%d)", i);
continue;
}
len += nal_len;
len += sizeof (sync_bytes);
}
/* we seriously overshoot the length, but it's fine. */
@ -864,13 +878,20 @@ gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
for (i = 0; params[i]; i++) {
guint save = 0;
gint state = 0;
gsize nal_len = strlen (params[i]);
if (nal_len == 0)
continue;
GST_DEBUG_OBJECT (depayload, "decoding param %d (%s)", i, params[i]);
memcpy (ptr, sync_bytes, sizeof (sync_bytes));
ptr += sizeof (sync_bytes);
len =
g_base64_decode_step (params[i], strlen (params[i]), ptr, &state,
&save);
len = g_base64_decode_step (params[i], nal_len, ptr, &state, &save);
if (len == 0) {
GST_WARNING_OBJECT (depayload, "failed decoding param %d", i);
ptr -= sizeof (sync_bytes);
continue;
}
GST_DEBUG_OBJECT (depayload, "decoded %d bytes", len);
total += len + sizeof (sync_bytes);
ptr += len;
@ -879,12 +900,16 @@ gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
gst_buffer_resize (codec_data, 0, total);
g_strfreev (params);
if (total > 0) {
/* keep the codec_data, we need to send it as the first buffer. We cannot
* push it in the adapter because the adapter might be flushed on discont.
*/
if (rtph265depay->codec_data)
gst_buffer_unref (rtph265depay->codec_data);
rtph265depay->codec_data = codec_data;
} else {
gst_buffer_unref (codec_data);
}
} else if (!rtph265depay->byte_stream) {
gchar **params;
gint i;
@ -906,7 +931,7 @@ gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
nal_len = strlen (params[i]);
if (nal_len == 0) {
GST_WARNING_OBJECT (depayload, "empty param '%s' (#%d)", params[i], i);
GST_WARNING_OBJECT (depayload, "empty param (#%d)", i);
continue;
}
nal = gst_buffer_new_and_alloc (nal_len);
@ -915,15 +940,22 @@ gst_rtp_h265_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
nal_len =
g_base64_decode_step (params[i], nal_len, nalmap.data, &state, &save);
if (nal_len > 0) {
GST_DEBUG_OBJECT (depayload, "adding param %d as %s", i,
(((nalmap.data[0] >> 1) & 0x3f) ==
32) ? "VPS" : (((nalmap.data[0] >> 1) & 0x3f) ==
33) ? "SPS" : "PPS");
}
gst_buffer_unmap (nal, &nalmap);
gst_buffer_set_size (nal, nal_len);
if (nal_len > 0) {
gst_rtp_h265_depay_add_vps_sps_pps (rtph265depay, nal);
} else {
GST_WARNING_OBJECT (depayload, "failed decoding param %d", i);
gst_buffer_unref (nal);
}
}
g_strfreev (params);