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h264parse: Fix profile and level setting in caps

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Don't use the apis in codec-utils to extract the profile and level
syntax elements since it is wrong if there are emulation prevention
bytes existing in the byte-stream data.

https://bugzilla.gnome.org/show_bug.cgi?id=747613
This commit is contained in:
Sreerenj Balachandran 2015-05-02 18:06:18 +03:00 committed by Sebastian Dröge
parent 2ed71bee3b
commit 3fae18b5d2
1 changed files with 126 additions and 10 deletions
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136
gst/videoparsers/gsth264parse.c
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@ -1395,6 +1395,121 @@ ensure_caps_profile (GstH264Parse * h264parse, GstCaps * caps, GstH264SPS * sps)
gst_caps_unref (filter_caps);
}
static const gchar *
digit_to_string (guint digit)
{
static const char itoa[][2] = {
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"
};
if (G_LIKELY (digit < 10))
return itoa[digit];
else
return NULL;
}
static const gchar *
get_profile_string (GstH264SPS * sps)
{
const gchar *profile = NULL;
switch (sps->profile_idc) {
case 66:
if (sps->constraint_set1_flag)
profile = "constrained-baseline";
else
profile = "baseline";
break;
case 77:
profile = "main";
break;
case 88:
profile = "extended";
break;
case 100:
profile = "high";
break;
case 110:
if (sps->constraint_set3_flag)
profile = "high-10-intra";
else
profile = "high-10";
break;
case 122:
if (sps->constraint_set3_flag)
profile = "high-4:2:2-intra";
else
profile = "high-4:2:2";
break;
case 244:
if (sps->constraint_set3_flag)
profile = "high-4:4:4-intra";
else
profile = "high-4:4:4";
break;
case 44:
profile = "cavlc-4:4:4-intra";
break;
case 118:
profile = "multiview-high";
break;
case 128:
profile = "stereo-high";
break;
case 83:
if (sps->constraint_set5_flag)
profile = "scalable-constrained-baseline";
else
profile = "scalable-baseline";
break;
case 86:
profile = "scalable-high";
break;
default:
return NULL;
}
return profile;
}
static const gchar *
get_level_string (GstH264SPS * sps)
{
if ((sps->level_idc == 11 && sps->constraint_set3_flag)
|| sps->level_idc == 9)
return "1b";
else if (sps->level_idc % 10 == 0)
return digit_to_string (sps->level_idc / 10);
else {
switch (sps->level_idc) {
case 11:
return "1.1";
case 12:
return "1.2";
case 13:
return "1.3";
case 21:
return "2.1";
case 22:
return "2.2";
case 31:
return "3.1";
case 32:
return "3.2";
case 41:
return "4.1";
case 42:
return "4.2";
case 51:
return "5.1";
case 52:
return "5.2";
default:
return NULL;
}
}
}
static void
gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
{
@ -1554,17 +1669,18 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
/* set profile and level in caps */
if (sps) {
GstMapInfo map;
GstBuffer *sps_buf = h264parse->sps_nals[sps->id];
const gchar *profile, *level;
if (sps_buf) {
gst_buffer_map (sps_buf, &map, GST_MAP_READ);
gst_codec_utils_h264_caps_set_level_and_profile (caps,
map.data + 1, map.size - 1);
gst_buffer_unmap (sps_buf, &map);
/* relax the profile constraint to find a suitable decoder */
ensure_caps_profile (h264parse, caps, sps);
}
profile = get_profile_string (sps);
if (profile != NULL)
gst_caps_set_simple (caps, "profile", G_TYPE_STRING, profile, NULL);
level = get_level_string (sps);
if (level != NULL)
gst_caps_set_simple (caps, "level", G_TYPE_STRING, level, NULL);
/* relax the profile constraint to find a suitable decoder */
ensure_caps_profile (h264parse, caps, sps);
}
src_caps = gst_pad_get_current_caps (GST_BASE_PARSE_SRC_PAD (h264parse));