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interlace: Add allow-rff property. Fix timestamping

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This commit is contained in:
David Schleef 2010-09-18 14:57:32 -07:00
parent fd3d269b8d
commit 8dfcc11bcb
1 changed files with 90 additions and 33 deletions
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123
gst/interlace/gstinterlace.c
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@ -91,6 +91,7 @@ struct _GstInterlace
/* properties */
gboolean top_field_first;
gint pattern;
gboolean allow_rff;
/* state */
int width;
@ -102,8 +103,9 @@ struct _GstInterlace
GstBuffer *stored_frame;
gint stored_fields;
gint phase_index;
GstClockTime buffer_ts;
int first_field;
int field_index; /* index of the next field to push, 0=top 1=bottom */
GstClockTime timebase;
int fields_since_timebase;
};
@ -116,7 +118,8 @@ enum
{
PROP_0,
PROP_TOP_FIELD_FIRST,
PROP_PATTERN
PROP_PATTERN,
PROP_ALLOW_RFF
};
typedef enum
@ -251,13 +254,20 @@ gst_interlace_class_init (GstInterlaceClass * klass)
"Pattern of fields to be used for telecine", GST_INTERLACE_PATTERN,
GST_INTERLACE_PATTERN_2_3,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_ALLOW_RFF,
g_param_spec_boolean ("allow-rff", "Allow Repeat-First-Field flags",
"Allow generation of buffers with RFF flag set, i.e., duration of 3 fields",
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_interlace_reset (GstInterlace * interlace)
{
interlace->phase_index = 0;
interlace->buffer_ts = GST_CLOCK_TIME_NONE;
interlace->timebase = GST_CLOCK_TIME_NONE;
interlace->field_index = 0;
}
static void
@ -279,6 +289,7 @@ gst_interlace_init (GstInterlace * interlace)
gst_pad_set_getcaps_function (interlace->srcpad, gst_interlace_getcaps);
interlace->top_field_first = FALSE;
interlace->allow_rff = FALSE;
interlace->pattern = GST_INTERLACE_PATTERN_2_3;
gst_interlace_reset (interlace);
}
@ -306,20 +317,28 @@ static const PulldownFormat formats[] = {
};
static void
gst_interlace_decorate_buffer (GstInterlace * interlace, GstBuffer * buf)
gst_interlace_decorate_buffer (GstInterlace * interlace, GstBuffer * buf,
int n_fields)
{
GST_BUFFER_TIMESTAMP (buf) = interlace->buffer_ts;
GST_BUFFER_TIMESTAMP (buf) = interlace->timebase +
gst_util_uint64_scale (GST_SECOND,
interlace->src_fps_d * interlace->fields_since_timebase,
interlace->src_fps_n);
GST_BUFFER_DURATION (buf) =
gst_util_uint64_scale (GST_SECOND, interlace->src_fps_d,
gst_util_uint64_scale (GST_SECOND, interlace->src_fps_d * n_fields,
interlace->src_fps_n);
/* increment the buffer timestamp by duration for the next buffer */
interlace->buffer_ts += gst_util_uint64_scale (GST_SECOND,
interlace->src_fps_d, interlace->src_fps_n);
gst_buffer_set_caps (buf, interlace->srccaps);
if (interlace->first_field == 0) {
if (interlace->field_index == 0) {
GST_BUFFER_FLAG_SET (buf, GST_VIDEO_BUFFER_TFF);
}
if (n_fields == 3) {
GST_BUFFER_FLAG_SET (buf, GST_VIDEO_BUFFER_RFF);
}
if (n_fields == 1) {
GST_BUFFER_FLAG_SET (buf, GST_VIDEO_BUFFER_ONEFIELD);
}
}
static gboolean
@ -365,7 +384,8 @@ gst_interlace_sink_event (GstPad * pad, GstEvent * event)
gst_buffer_make_metadata_writable (interlace->stored_frame);
num_fields -= 2;
gst_interlace_decorate_buffer (interlace, interlace->stored_frame);
gst_interlace_decorate_buffer (interlace, interlace->stored_frame,
n_fields);
/* ref output_buffer/stored frame because we want to keep it for now
* and pushing gives away a ref */
@ -423,6 +443,7 @@ gst_interlace_getcaps (GstPad * pad)
} else {
icaps = gst_caps_intersect (othercaps,
gst_pad_get_pad_template_caps (otherpad));
gst_caps_unref (othercaps);
}
gst_caps_set_simple (icaps, "interlaced", G_TYPE_BOOLEAN,
@ -604,6 +625,7 @@ gst_interlace_chain (GstPad * pad, GstBuffer * buffer)
GstFlowReturn ret = GST_FLOW_OK;
gint num_fields = 0;
int current_fields;
const PulldownFormat *format;
GST_DEBUG ("Received buffer at %u:%02u:%02u:%09u",
(guint) (GST_BUFFER_TIMESTAMP (buffer) / (GST_SECOND * 60 * 60)),
@ -629,54 +651,83 @@ gst_interlace_chain (GstPad * pad, GstBuffer * buffer)
interlace->stored_fields = 0;
if (interlace->top_field_first) {
interlace->first_field = 0;
interlace->field_index = 0;
} else {
interlace->first_field = 1;
interlace->field_index = 1;
}
}
if (interlace->buffer_ts == GST_CLOCK_TIME_NONE) {
if (interlace->timebase == GST_CLOCK_TIME_NONE) {
/* get the initial ts */
interlace->buffer_ts = GST_BUFFER_TIMESTAMP (buffer);
interlace->timebase = GST_BUFFER_TIMESTAMP (buffer);
}
current_fields = formats->n_fields[interlace->phase_index];
format = &formats[interlace->pattern];
if (interlace->stored_fields == 0 && interlace->phase_index == 0
&& GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buffer))) {
interlace->timebase = GST_BUFFER_TIMESTAMP (buffer);
interlace->fields_since_timebase = 0;
}
current_fields = format->n_fields[interlace->phase_index];
/* increment the phase index */
interlace->phase_index++;
if (!formats->n_fields[interlace->phase_index]) {
if (!format->n_fields[interlace->phase_index]) {
interlace->phase_index = 0;
}
GST_ERROR ("incoming buffer assigned %d fields", current_fields);
GST_DEBUG ("incoming buffer assigned %d fields", current_fields);
num_fields = interlace->stored_fields + current_fields;
while (num_fields >= 2) {
GstBuffer *output_buffer;
int n_output_fields;
GST_ERROR ("have %d fields, %d current, %d stored",
GST_DEBUG ("have %d fields, %d current, %d stored",
num_fields, current_fields, interlace->stored_fields);
output_buffer = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer));
if (interlace->stored_fields > 0) {
GST_ERROR ("1 field from stored, 1 from current");
GST_DEBUG ("1 field from stored, 1 from current");
output_buffer = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer));
/* take the first field from the stored frame */
copy_field (interlace, output_buffer, interlace->stored_frame,
interlace->first_field);
interlace->field_index);
interlace->stored_fields--;
/* take the second field from the incoming buffer */
copy_field (interlace, output_buffer, buffer, interlace->first_field ^ 1);
copy_field (interlace, output_buffer, buffer, interlace->field_index ^ 1);
current_fields--;
n_output_fields = 2;
} else {
GST_ERROR ("2 fields from current");
/* take both buffers from incoming buffer */
/* FIXME this should push the existing buffer */
copy_field (interlace, output_buffer, buffer, interlace->first_field);
copy_field (interlace, output_buffer, buffer, interlace->first_field ^ 1);
current_fields -= 2;
output_buffer =
gst_buffer_make_metadata_writable (gst_buffer_ref (buffer));
if (num_fields >= 3 && interlace->allow_rff) {
GST_DEBUG ("3 fields from current");
/* take both fields from incoming buffer */
current_fields -= 3;
n_output_fields = 3;
} else {
GST_DEBUG ("2 fields from current");
/* take both buffers from incoming buffer */
current_fields -= 2;
n_output_fields = 2;
}
}
num_fields -= 2;
num_fields -= n_output_fields;
gst_interlace_decorate_buffer (interlace, output_buffer);
gst_interlace_decorate_buffer (interlace, output_buffer, n_output_fields);
interlace->fields_since_timebase += n_output_fields;
interlace->field_index ^= (n_output_fields & 1);
GST_DEBUG_OBJECT (interlace, "output timestamp %" GST_TIME_FORMAT
" duration %" GST_TIME_FORMAT " flags %04x %s %s %s",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (output_buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (output_buffer)),
GST_BUFFER_FLAGS (output_buffer),
(GST_BUFFER_FLAGS (output_buffer) & GST_VIDEO_BUFFER_TFF) ? "tff" : "",
(GST_BUFFER_FLAGS (output_buffer) & GST_VIDEO_BUFFER_RFF) ? "rff" : "",
(GST_BUFFER_FLAGS (output_buffer) & GST_VIDEO_BUFFER_ONEFIELD) ?
"onefield" : "");
ret = gst_pad_push (interlace->srcpad, output_buffer);
if (ret != GST_FLOW_OK) {
@ -685,7 +736,7 @@ gst_interlace_chain (GstPad * pad, GstBuffer * buffer)
}
}
GST_ERROR ("done. %d fields remaining", current_fields);
GST_DEBUG ("done. %d fields remaining", current_fields);
if (interlace->stored_frame) {
gst_buffer_unref (interlace->stored_frame);
@ -718,6 +769,9 @@ gst_interlace_set_property (GObject * object,
case PROP_PATTERN:
interlace->pattern = g_value_get_enum (value);
break;
case PROP_ALLOW_RFF:
interlace->allow_rff = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -737,6 +791,9 @@ gst_interlace_get_property (GObject * object,
case PROP_PATTERN:
g_value_set_enum (value, interlace->pattern);
break;
case PROP_ALLOW_RFF:
g_value_set_boolean (value, interlace->allow_rff);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;