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signalprocessor: change _setup to pass whole caps and not just sampling_rate

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This allows to get rid of the sampling_rate variable in the base-class. Also now
subclasses can modify the caps to actualy negotiate. This is needed to e.g. set
audio-channel positions.
This commit is contained in:
Stefan Kost 2009-11-16 21:50:20 +02:00
parent 469446c7a4
commit 8a5e9a3363
4 changed files with 36 additions and 37 deletions
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19
ext/ladspa/gstladspa.c
View file

@ -60,8 +60,7 @@ static void gst_ladspa_set_property (GObject * object, guint prop_id,
static void gst_ladspa_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_ladspa_setup (GstSignalProcessor * sigproc,
guint sample_rate);
static gboolean gst_ladspa_setup (GstSignalProcessor * sigproc, GstCaps * caps);
static gboolean gst_ladspa_start (GstSignalProcessor * sigproc);
static void gst_ladspa_stop (GstSignalProcessor * sigproc);
static void gst_ladspa_cleanup (GstSignalProcessor * sigproc);
@ -557,13 +556,15 @@ gst_ladspa_get_property (GObject * object, guint prop_id, GValue * value,
}
static gboolean
gst_ladspa_setup (GstSignalProcessor * gsp, guint sample_rate)
gst_ladspa_setup (GstSignalProcessor * gsp, GstCaps * caps)
{
GstLADSPA *ladspa;
GstLADSPAClass *oclass;
GstSignalProcessorClass *gsp_class;
LADSPA_Descriptor *desc;
int i;
GstStructure *s;
gint sample_rate;
gint i;
gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
ladspa = (GstLADSPA *) gsp;
@ -573,6 +574,10 @@ gst_ladspa_setup (GstSignalProcessor * gsp, guint sample_rate)
g_return_val_if_fail (ladspa->handle == NULL, FALSE);
g_return_val_if_fail (ladspa->activated == FALSE, FALSE);
s = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (s, "rate", &sample_rate))
goto no_sample_rate;
GST_DEBUG_OBJECT (ladspa, "instantiating the plugin at %d Hz", sample_rate);
ladspa->handle = desc->instantiate (desc, sample_rate);
@ -588,6 +593,12 @@ gst_ladspa_setup (GstSignalProcessor * gsp, guint sample_rate)
oclass->control_out_portnums[i], &(gsp->control_out[i]));
return TRUE;
no_sample_rate:
{
GST_WARNING_OBJECT (gsp, "got no sample-rate");
return FALSE;
}
}
static gboolean

16
ext/lv2/gstlv2.c
View file

@ -53,7 +53,7 @@ static void gst_lv2_set_property (GObject * object,
static void gst_lv2_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean gst_lv2_setup (GstSignalProcessor * sigproc, guint sample_rate);
static gboolean gst_lv2_setup (GstSignalProcessor * sigproc, GstCaps * caps);
static gboolean gst_lv2_start (GstSignalProcessor * sigproc);
static void gst_lv2_stop (GstSignalProcessor * sigproc);
static void gst_lv2_cleanup (GstSignalProcessor * sigproc);
@ -591,11 +591,13 @@ gst_lv2_get_property (GObject * object, guint prop_id, GValue * value,
}
static gboolean
gst_lv2_setup (GstSignalProcessor * gsp, guint sample_rate)
gst_lv2_setup (GstSignalProcessor * gsp, GstCaps * caps)
{
GstLV2 *lv2;
GstLV2Class *oclass;
GstSignalProcessorClass *gsp_class;
GstStructure *s;
gint sample_rate;
gint i;
gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
@ -604,6 +606,10 @@ gst_lv2_setup (GstSignalProcessor * gsp, guint sample_rate)
g_return_val_if_fail (lv2->activated == FALSE, FALSE);
s = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (s, "rate", &sample_rate))
goto no_sample_rate;
GST_DEBUG_OBJECT (lv2, "instantiating the plugin at %d Hz", sample_rate);
lv2->instance = slv2_plugin_instantiate (oclass->plugin, sample_rate, NULL);
@ -621,6 +627,12 @@ gst_lv2_setup (GstSignalProcessor * gsp, guint sample_rate)
&(gsp->control_out[i]));
return TRUE;
no_sample_rate:
{
GST_WARNING_OBJECT (gsp, "got no sample-rate");
return FALSE;
}
}
static gboolean

30
gst-libs/gst/signalprocessor/gstsignalprocessor.c
View file

@ -278,8 +278,6 @@ gst_signal_processor_init (GstSignalProcessor * self,
/* init */
self->pending_in = klass->num_group_in + klass->num_audio_in;
self->pending_out = 0;
self->sample_rate = 0;
}
static void
@ -304,7 +302,7 @@ gst_signal_processor_finalize (GObject * object)
}
static gboolean
gst_signal_processor_setup (GstSignalProcessor * self, guint sample_rate)
gst_signal_processor_setup (GstSignalProcessor * self, GstCaps * caps)
{
GstSignalProcessorClass *klass;
gboolean ret = TRUE;
@ -316,7 +314,7 @@ gst_signal_processor_setup (GstSignalProcessor * self, guint sample_rate)
g_return_val_if_fail (self->state == GST_SIGNAL_PROCESSOR_STATE_NULL, FALSE);
if (klass->setup)
ret = klass->setup (self, sample_rate);
ret = klass->setup (self, caps);
if (!ret)
goto setup_failed;
@ -327,7 +325,7 @@ gst_signal_processor_setup (GstSignalProcessor * self, guint sample_rate)
setup_failed:
{
GST_INFO_OBJECT (self, "setup() failed at %u Hz", sample_rate);
GST_INFO_OBJECT (self, "setup() failed for caps: %" GST_PTR_FORMAT, caps);
return ret;
}
}
@ -476,28 +474,16 @@ gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps)
/* the whole processor has one caps; if the sample rate changes, let subclass
implementations know */
if (!gst_caps_is_equal (caps, self->caps)) {
GstStructure *s;
gint sample_rate;
GST_DEBUG_OBJECT (pad, "got caps %" GST_PTR_FORMAT, caps);
s = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (s, "rate", &sample_rate)) {
GST_WARNING ("got no sample-rate");
goto impossible;
}
GST_DEBUG_OBJECT (self, "Got rate=%d", sample_rate);
if (GST_SIGNAL_PROCESSOR_IS_RUNNING (self))
gst_signal_processor_stop (self);
if (GST_SIGNAL_PROCESSOR_IS_INITIALIZED (self))
gst_signal_processor_cleanup (self);
if (!gst_signal_processor_setup (self, sample_rate))
if (!gst_signal_processor_setup (self, caps))
goto start_or_setup_failed;
self->sample_rate = sample_rate;
gst_caps_replace (&self->caps, caps);
} else {
GST_DEBUG_OBJECT (self, "skipping, have caps already");
@ -509,7 +495,7 @@ gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps)
sample rate (e.g., when having gone PLAYING->READY->PLAYING). make sure
when we leave that the processor is RUNNING. */
if (!GST_SIGNAL_PROCESSOR_IS_INITIALIZED (self)
&& !gst_signal_processor_setup (self, self->sample_rate))
&& !gst_signal_processor_setup (self, self->caps))
goto start_or_setup_failed;
if (!GST_SIGNAL_PROCESSOR_IS_RUNNING (self)
&& !gst_signal_processor_start (self))
@ -529,12 +515,6 @@ setcaps_pull_failed:
gst_object_unref (self);
return FALSE;
}
impossible:
{
g_critical ("something impossible happened");
gst_object_unref (self);
return FALSE;
}
}
/** De-interleave a pad (gstreamer => plugin) */

8
gst-libs/gst/signalprocessor/gstsignalprocessor.h
View file

@ -78,14 +78,10 @@ struct _GstSignalProcessorGroup {
struct _GstSignalProcessor {
GstElement element;
/* state */
GstCaps *caps;
guint sample_rate;
GstSignalProcessorState state;
GstFlowReturn flow_state;
GstActivateMode mode;
/* pending inputs before processing can take place */
@ -121,7 +117,7 @@ struct _GstSignalProcessorClass {
/* virtual methods for subclasses */
gboolean (*setup) (GstSignalProcessor *self, guint sample_rate);
gboolean (*setup) (GstSignalProcessor *self, GstCaps *caps);
gboolean (*start) (GstSignalProcessor *self);
void (*stop) (GstSignalProcessor *self);
void (*cleanup) (GstSignalProcessor *self);