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gst/interleave/interleave.c: Use new gst_audio_check_channel_positions() function and register the GstInterleavePad t...

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Original commit message from CVS:
* gst/interleave/interleave.c:
(gst_interleave_check_channel_positions),
(gst_interleave_set_channel_positions),
(gst_interleave_class_init):
Use new gst_audio_check_channel_positions() function and register
the GstInterleavePad type from a threadsafe context.
This commit is contained in:
Sebastian Dröge 2008-06-03 09:03:19 +00:00
parent 2c6e50598e
commit 755bdbebf6
1 changed files with 12 additions and 78 deletions
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90
gst/interleave/interleave.c
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@ -232,28 +232,16 @@ gst_interleave_finalize (GObject * object)
G_OBJECT_CLASS (parent_class)->finalize (object); G_OBJECT_CLASS (parent_class)->finalize (object);
} }
/* Copied from base/gst-libs/gst/audio/multichannel.c and adjusted to our needs */
static gboolean static gboolean
gst_audio_check_channel_positions (GValueArray * positions) gst_interleave_check_channel_positions (GValueArray * positions)
{ {
gint i, n; gint i;
gint channels; guint channels;
GstAudioChannelPosition *pos; GstAudioChannelPosition *pos;
const struct gboolean ret;
{
const GstAudioChannelPosition pos1[2];
const GstAudioChannelPosition pos2[1];
} conf[] = {
/* front: mono <-> stereo */
{ {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT}, {
GST_AUDIO_CHANNEL_POSITION_FRONT_MONO}}, { {
GST_AUDIO_CHANNEL_POSITION_INVALID}}
};
channels = positions->n_values; channels = positions->n_values;
pos = g_new (GstAudioChannelPosition, positions->n_values); pos = g_new (GstAudioChannelPosition, positions->n_values);
@ -264,69 +252,10 @@ gst_audio_check_channel_positions (GValueArray * positions)
pos[i] = g_value_get_enum (v); pos[i] = g_value_get_enum (v);
} }
/* check for invalid channel positions */ ret = gst_audio_check_channel_positions (pos, channels);
for (n = 0; n < channels; n++) {
if (pos[n] <= GST_AUDIO_CHANNEL_POSITION_INVALID ||
pos[n] >= GST_AUDIO_CHANNEL_POSITION_NUM) {
goto fail;
}
}
/* either all channel positions are NONE or all are defined,
* but having only some channel positions NONE and others not
* is not allowed */
if (pos[0] == GST_AUDIO_CHANNEL_POSITION_NONE) {
for (n = 1; n < channels; ++n) {
if (pos[n] != GST_AUDIO_CHANNEL_POSITION_NONE) {
goto fail;
}
}
/* all positions are NONE, we are done here */
goto fail;
}
/* check for multiple position occurrences */
for (i = GST_AUDIO_CHANNEL_POSITION_INVALID + 1;
i < GST_AUDIO_CHANNEL_POSITION_NUM; i++) {
gint count = 0;
for (n = 0; n < channels; n++) {
if (pos[n] == i)
count++;
}
/* NONE may not occur mixed with other channel positions */
if (i == GST_AUDIO_CHANNEL_POSITION_NONE && count > 0) {
goto fail;
}
if (count > 1) {
goto fail;
}
}
/* check for position conflicts */
for (i = 0; conf[i].pos1[0] != GST_AUDIO_CHANNEL_POSITION_INVALID; i++) {
gboolean found1 = FALSE, found2 = FALSE;
for (n = 0; n < channels; n++) {
if (pos[n] == conf[i].pos1[0] || pos[n] == conf[i].pos1[1])
found1 = TRUE;
else if (pos[n] == conf[i].pos2[0])
found2 = TRUE;
}
if (found1 && found2) {
goto fail;
}
}
g_free (pos); g_free (pos);
return TRUE;
fail: return ret;
g_free (pos);
return FALSE;
} }
static void static void
@ -339,7 +268,7 @@ gst_interleave_set_channel_positions (GstInterleave * self, GstStructure * s)
if (self->channel_positions if (self->channel_positions
&& self->channels == self->channel_positions->n_values && self->channels == self->channel_positions->n_values
&& gst_audio_check_channel_positions (self->channel_positions)) { && gst_interleave_check_channel_positions (self->channel_positions)) {
GST_DEBUG_OBJECT (self, "Using provided channel positions"); GST_DEBUG_OBJECT (self, "Using provided channel positions");
for (i = 0; i < self->channels; i++) for (i = 0; i < self->channels; i++)
gst_value_array_append_value (&pos_array, gst_value_array_append_value (&pos_array,
@ -389,6 +318,11 @@ gst_interleave_class_init (GstInterleaveClass * klass)
GST_DEBUG_CATEGORY_INIT (gst_interleave_debug, "interleave", 0, GST_DEBUG_CATEGORY_INIT (gst_interleave_debug, "interleave", 0,
"interleave element"); "interleave element");
/* Reference GstInterleavePad class to have the type registered from
* a threadsafe context
*/
g_type_class_ref (GST_TYPE_INTERLEAVE_PAD);
gobject_class->finalize = gst_interleave_finalize; gobject_class->finalize = gst_interleave_finalize;
gobject_class->set_property = gst_interleave_set_property; gobject_class->set_property = gst_interleave_set_property;
gobject_class->get_property = gst_interleave_get_property; gobject_class->get_property = gst_interleave_get_property;