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ccconverter: Don't override in_fps_entry when trying to take output

Browse source 
This allows to handle CDP streams where the framerate is not provided by the
caps and generally gives preference to the framerate inside the CDP packets over
the one in the caps.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7532>
This commit is contained in:
Sebastian Dröge 2024-09-17 11:47:47 +03:00 committed by GStreamer Marge Bot
parent 7e9866844f
commit b5e119bbcc
2 changed files with 12 additions and 10 deletions
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20
subprojects/gst-plugins-bad/ext/closedcaption/gstccconverter.c
View file

@ -502,7 +502,7 @@ static void
get_framerate_output_scale (GstCCConverter * self,
const struct cdp_fps_entry *in_fps_entry, gint * scale_n, gint * scale_d)
{
if (self->in_fps_n == 0 || self->out_fps_d == 0) {
if (in_fps_entry->fps_n == 0 || self->out_fps_d == 0) {
*scale_n = 1;
*scale_d = 1;
return;
@ -590,24 +590,30 @@ can_take_buffer (GstCCConverter * self,
int input_frame_n, input_frame_d, output_frame_n, output_frame_d;
int output_time_cmp, scale_n, scale_d;
g_assert (out_fps_entry);
if (!in_fps_entry || in_fps_entry->fps_n == 0)
in_fps_entry = cdp_fps_entry_from_fps (self->in_fps_n, self->in_fps_d);
g_assert (in_fps_entry);
/* TODO: handle input discont */
if (self->in_fps_n == 0) {
if (in_fps_entry->fps_n == 0) {
input_frame_n = self->input_frames;
input_frame_d = 1;
} else {
/* compute the relative frame count for each */
if (!gst_util_fraction_multiply (self->in_fps_d, self->in_fps_n,
if (!gst_util_fraction_multiply (in_fps_entry->fps_d, in_fps_entry->fps_n,
self->input_frames, 1, &input_frame_n, &input_frame_d))
/* we should never overflow */
g_assert_not_reached ();
}
if (self->in_fps_n == 0) {
if (in_fps_entry->fps_n == 0) {
output_frame_n = self->output_frames;
output_frame_d = 1;
} else {
if (!gst_util_fraction_multiply (self->out_fps_d, self->out_fps_n,
if (!gst_util_fraction_multiply (out_fps_entry->fps_d, out_fps_entry->fps_n,
self->output_frames, 1, &output_frame_n, &output_frame_d))
/* we should never overflow */
g_assert_not_reached ();
@ -621,10 +627,6 @@ can_take_buffer (GstCCConverter * self,
self->input_frames = 0;
}
in_fps_entry = cdp_fps_entry_from_fps (self->in_fps_n, self->in_fps_d);
if (!in_fps_entry || in_fps_entry->fps_n == 0)
g_assert_not_reached ();
/* compute the relative rates of the two framerates */
get_framerate_output_scale (self, in_fps_entry, &scale_n, &scale_d);

2
subprojects/gst-plugins-bad/tests/check/elements/ccconverter.c
View file

@ -524,7 +524,7 @@ GST_START_TEST (convert_cea708_cdp_cea708_cc_data_too_big)
{
/* tests that too large input is truncated */
const guint8 in[] =
{ 0x96, 0x69, 0x4c, 0x8f, 0x43, 0x00, 0x00, 0x72, 0xf5, 0xfc, 0x81, 0x82,
{ 0x96, 0x69, 0x4c, 0x5f, 0x43, 0x00, 0x00, 0x72, 0xf5, 0xfc, 0x81, 0x82,
0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80,
0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80,
0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80, 0xfe, 0x80, 0x80,