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Revert "videoparseutils: support two new EIA 608 closed caption formats"

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This reverts commit f5c1c90122.
This commit is contained in:
Olivier Crête 2019-12-17 16:44:10 -05:00
parent fad9096647
commit 1f766a7145
2 changed files with 4 additions and 50 deletions
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52
gst/videoparsers/gstvideoparseutils.c
View file

@ -98,29 +98,7 @@ gst_video_parse_user_data (GstElement * elt, GstVideoParseUserData * user_data,
switch (user_data_id) {
case USER_DATA_ID_SCTE_20_CC:
{
if (!gst_byte_reader_peek_uint8 (br, &temp)) {
GST_WARNING_OBJECT (elt, "Missing VBI data flag, ignoring");
break;
}
if ((temp & 0x7E) != 0) {
GST_WARNING_OBJECT (elt, "Middle 6 bits should be zero, ignoring");
break;
}
if ((temp & 1) == 0) {
GST_WARNING_OBJECT (elt, "VBI data flag not set, ignoring");
break;
}
if (!gst_byte_reader_get_data (br, gst_byte_reader_get_remaining (br),
&data))
break;
user_data->closedcaptions_size = gst_byte_reader_get_remaining (br);
memcpy (user_data->closedcaptions, data, user_data->closedcaptions_size);
user_data->closedcaptions_type = GST_VIDEO_CAPTION_TYPE_CEA608_SCTE_20;
user_data->field = field;
GST_DEBUG_OBJECT (elt, "CEA 608 SCTE 20 closed captions, %u bytes",
user_data->closedcaptions_size);
}
GST_DEBUG_OBJECT (elt, "Unsupported SCTE 20 closed captions");
break;
case A53_USER_DATA_ID_DTG1:
if (!gst_byte_reader_get_uint8 (br, &temp)) {
@ -220,32 +198,8 @@ gst_video_parse_user_data (GstElement * elt, GstVideoParseUserData * user_data,
cc_size);
}
break;
case A53_USER_DATA_TYPE_CODE_SCTE_21_ADDITIONAL_608_DATA:
{
guint8 temp;
if (!gst_byte_reader_get_uint8 (br, &temp) || (temp & 0xE0) != 0xE0) {
GST_WARNING_OBJECT (elt, "Missing closed caption count, ignoring");
break;
}
cc_count = temp & 0x1F;
cc_size = cc_count * 3;
if (cc_size == 0 || cc_size > gst_byte_reader_get_remaining (br)) {
GST_DEBUG_OBJECT (elt, "ignoring closed captions, not enough data");
break;
}
g_assert (cc_size <= sizeof (user_data->closedcaptions));
if (!gst_byte_reader_get_data (br, cc_size, &data))
break;
memcpy (user_data->closedcaptions, data, cc_size);
user_data->closedcaptions_size = cc_size;
user_data->closedcaptions_type =
GST_VIDEO_CAPTION_TYPE_CEA608_ADDITIONAL_CEA_608;
user_data->field = field;
GST_DEBUG_OBJECT (elt,
"SCTE 21 Additional CEA-608 closed captions, %u bytes", cc_size);
GST_LOG_OBJECT (elt,
"Extracted SCTE 21 Additional CEA 608 closed captions");
}
case A53_USER_DATA_TYPE_CODE_SCTE_21_EIA_608_CC_DATA:
GST_DEBUG_OBJECT (elt, "Unsupported SCTE 21 closed captions");
break;
case A53_USER_DATA_TYPE_CODE_BAR_DATA:
bar_size = gst_byte_reader_get_remaining (br);

2
gst/videoparsers/gstvideoparseutils.h
View file

@ -42,7 +42,7 @@
#define A53_USER_DATA_TYPE_CODE_BAR_DATA 0x06
/* ANSI/SCTE 21 Additional EIA 608 Data
* https://www.scte.org/documents/pdf/Standards/ANSISCTE212001R2006.pdf*/
#define A53_USER_DATA_TYPE_CODE_SCTE_21_ADDITIONAL_608_DATA 0x04
#define A53_USER_DATA_TYPE_CODE_SCTE_21_EIA_608_CC_DATA 0x04
/* CEA-708 Table 2 */
#define CEA_708_PROCESS_CC_DATA_FLAG 0x40