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scte-section: add support for packetizing splice_program_flag='0'

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/913>
This commit is contained in:
Mathieu Duponchelle 2021-04-14 00:27:16 +02:00 committed by GStreamer Marge Bot
parent 612e064154
commit 1477d76b7d
1 changed files with 80 additions and 25 deletions
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105
subprojects/gst-plugins-bad/gst-libs/gst/mpegts/gst-scte-section.c
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@ -674,22 +674,45 @@ _packetize_sit (GstMpegtsSection * section)
/* There is at least 5 bytes */
command_length += 5;
if (!event->splice_event_cancel_indicator) {
if (!event->program_splice_flag) {
GST_WARNING ("Only SCTE program splices are supported");
return FALSE;
}
/* Add at least 5 bytes for common fields */
command_length += 5;
if (event->insert_event) {
if (!event->splice_immediate_flag) {
if (event->program_splice_time_specified)
command_length += 5;
else
command_length += 1;
if (event->program_splice_flag) {
if (event->insert_event) {
if (!event->splice_immediate_flag) {
if (event->program_splice_time_specified)
command_length += 5;
else
command_length += 1;
}
} else {
/* Schedule events, 4 bytes for utc_splice_time */
command_length += 4;
}
} else {
/* Schedule events, 4 bytes for utc_splice_time */
command_length += 4;
guint j;
/* component_count */
command_length += 1;
for (j = 0; j < event->components->len; j++) {
GstMpegtsSCTESpliceComponent *component =
g_ptr_array_index (event->components, j);
/* component_tag */
command_length += 1;
if (event->insert_event) {
if (!event->splice_immediate_flag) {
if (component->splice_time_specified)
command_length += 5;
else
command_length += 1;
}
} else {
/* utc_splice_time */
command_length += 4;
}
}
}
if (event->duration_flag)
@ -771,22 +794,54 @@ _packetize_sit (GstMpegtsSection * section)
(event->duration_flag << 5) |
(event->insert_event ? (event->splice_immediate_flag << 4) : 0) |
0x0f;
if (event->insert_event) {
if (!event->splice_immediate_flag) {
/* program_splice_time_specified : 1bit
* reserved : 6/7 bit */
if (!event->program_splice_time_specified)
*data++ = 0x7f;
else {
/* time : 33bit */
*data++ = 0xf2 | ((event->program_splice_time >> 32) & 0x1);
GST_WRITE_UINT32_BE (data, event->program_splice_time & 0xffffffff);
if (event->program_splice_flag) {
if (event->insert_event) {
if (!event->splice_immediate_flag) {
/* program_splice_time_specified : 1bit
* reserved : 6/7 bit */
if (!event->program_splice_time_specified)
*data++ = 0x7f;
else {
/* time : 33bit */
*data++ = 0xf2 | ((event->program_splice_time >> 32) & 0x1);
GST_WRITE_UINT32_BE (data,
event->program_splice_time & 0xffffffff);
data += 4;
}
}
} else {
GST_WRITE_UINT32_BE (data, event->utc_splice_time);
data += 4;
}
} else {
guint j;
*data++ = event->components->len & 0xff;
for (j = 0; j < event->components->len; j++) {
GstMpegtsSCTESpliceComponent *component =
g_ptr_array_index (event->components, j);
*data++ = component->tag;
if (event->insert_event) {
if (!event->splice_immediate_flag) {
/* program_splice_time_specified : 1bit
* reserved : 6/7 bit */
if (!component->splice_time_specified)
*data++ = 0x7f;
else {
/* time : 33bit */
*data++ = 0xf2 | ((component->splice_time >> 32) & 0x1);
GST_WRITE_UINT32_BE (data, component->splice_time & 0xffffffff);
data += 4;
}
}
} else {
GST_WRITE_UINT32_BE (data, component->utc_splice_time);
data += 4;
}
}
} else {
GST_WRITE_UINT32_BE (data, event->utc_splice_time);
data += 4;
}
if (event->duration_flag) {