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[MOVED FROM GST-P-FARSIGHT] Port sirenenc to gstelement
20080704195102-3e2dc-cd7687512ac560faaf15f53e1e262d1874a36cdf.gz
This commit is contained in:
Olivier Crete
Edward Hervey
parent
b696a8dd6c
commit
8722c6e6f5
2 changed files with 84 additions and 145 deletions
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@ -73,15 +73,10 @@ enum
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static void gst_siren_enc_dispose (GObject *object);
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static GstFlowReturn gst_siren_enc_transform (GstBaseTransform *trans,
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GstBuffer *inbuf, GstBuffer *outbuf);
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static gboolean gst_siren_enc_transform_size (GstBaseTransform *trans,
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GstPadDirection direction, GstCaps *caps, guint size,
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GstCaps *othercaps, guint *othersize);
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static GstCaps * gst_siren_enc_transform_caps (GstBaseTransform * base,
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GstPadDirection direction, GstCaps * caps);
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static gboolean gst_siren_enc_start (GstBaseTransform *trans);
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static gboolean gst_siren_enc_stop (GstBaseTransform *trans);
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static GstFlowReturn
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gst_siren_enc_chain (GstPad *pad, GstBuffer *buf);
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static GstStateChangeReturn
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gst_siren_change_state (GstElement *element, GstStateChange transition);
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static void
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@ -91,8 +86,8 @@ _do_init (GType type)
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(sirenenc_debug, "sirenenc", 0, "sirenenc");
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}
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GST_BOILERPLATE_FULL (GstSirenEnc, gst_siren_enc, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM, _do_init);
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GST_BOILERPLATE_FULL (GstSirenEnc, gst_siren_enc, GstElement,
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GST_TYPE_ELEMENT, _do_init);
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static void
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gst_siren_enc_base_init (gpointer klass)
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@ -111,25 +106,16 @@ static void
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gst_siren_enc_class_init (GstSirenEncClass *klass)
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{
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GObjectClass *gobject_class;
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GstBaseTransformClass *gstbasetransform_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstbasetransform_class = (GstBaseTransformClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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GST_DEBUG ("Initializing Class");
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gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_siren_enc_dispose);
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gstbasetransform_class->transform =
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GST_DEBUG_FUNCPTR (gst_siren_enc_transform);
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gstbasetransform_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_siren_enc_transform_caps);
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gstbasetransform_class->transform_size =
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GST_DEBUG_FUNCPTR (gst_siren_enc_transform_size);
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gstbasetransform_class->start =
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GST_DEBUG_FUNCPTR (gst_siren_enc_start);
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gstbasetransform_class->stop =
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GST_DEBUG_FUNCPTR (gst_siren_enc_stop);
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_siren_change_state);
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parent_class = g_type_class_peek_parent (klass);
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@ -141,9 +127,20 @@ gst_siren_enc_init (GstSirenEnc *enc, GstSirenEncClass *klass)
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{
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GST_DEBUG ("Initializing");
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enc->encoder = NULL;
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enc->encoder = Siren7_NewEncoder (16000);
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enc->adapter = gst_adapter_new ();
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enc->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
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enc->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
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gst_pad_set_chain_function (enc->sinkpad,
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GST_DEBUG_FUNCPTR (gst_siren_enc_chain));
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gst_element_add_pad (GST_ELEMENT (enc), enc->sinkpad);
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gst_element_add_pad (GST_ELEMENT (enc), enc->srcpad);
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enc->srccaps = gst_static_pad_template_get_caps (&srctemplate);
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GST_DEBUG ("Init done");
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}
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@ -163,140 +160,60 @@ gst_siren_enc_dispose (GObject *object)
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enc->adapter = NULL;
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}
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if (enc->srccaps)
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{
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gst_caps_unref (enc->srccaps);
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enc->srccaps = NULL;
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}
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G_OBJECT_CLASS (parent_class)->dispose (object);
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GST_DEBUG ("Dispose done");
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}
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static gboolean
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gst_siren_enc_start (GstBaseTransform *trans)
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{
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GstSirenEnc *enc = GST_SIREN_ENC (trans);
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GST_DEBUG ("Start");
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if (enc->encoder) {
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Siren7_CloseEncoder (enc->encoder);
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enc->encoder = NULL;
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}
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enc->encoder = Siren7_NewEncoder (16000);
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gst_adapter_clear (enc->adapter);
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return enc->encoder != NULL;
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}
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static gboolean
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gst_siren_enc_stop (GstBaseTransform *trans)
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{
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GstSirenEnc *enc = GST_SIREN_ENC (trans);
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GST_DEBUG ("Stop");
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if (enc->encoder) {
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Siren7_CloseEncoder (enc->encoder);
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enc->encoder = NULL;
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}
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gst_adapter_clear (enc->adapter);
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return TRUE;
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}
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static gboolean gst_siren_enc_transform_size (GstBaseTransform *trans,
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GstPadDirection direction, GstCaps *caps, guint size,
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GstCaps *othercaps, guint *othersize)
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{
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GstSirenEnc *enc = GST_SIREN_ENC (trans);
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GstStructure *structure;
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const gchar *in_name;
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const gchar *out_name;
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if (caps == NULL || othercaps == NULL) {
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GST_WARNING ("caps NULL");
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return FALSE;
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}
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structure = gst_caps_get_structure (caps, 0);
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in_name = gst_structure_get_name (structure);
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structure = gst_caps_get_structure (othercaps, 0);
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out_name = gst_structure_get_name (structure);
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GST_DEBUG ("Transform size from caps '%s' to '%s'", in_name, out_name);
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if (in_name == NULL || out_name == NULL) {
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return FALSE;
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} else if (strcmp (in_name, "audio/x-raw-int") == 0 &&
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strcmp (out_name, "audio/x-siren") == 0 ) {
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size += gst_adapter_available (enc->adapter);
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*othersize = size / 16;
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*othersize -= *othersize % 40;
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if ((size / 16) % 40 > 0)
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*othersize+=40;
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} else if (strcmp (in_name, "audio/x-siren") == 0 &&
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strcmp (out_name, "audio/x-raw-int") == 0 ) {
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*othersize = size * 16;
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*othersize -= *othersize % 640;
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if ((size * 16) % 640 > 0)
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*othersize+= 640;
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} else {
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GST_DEBUG ("Unknown in/out caps");
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return FALSE;
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}
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GST_DEBUG ("Transform size %d to %d", size, *othersize);
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return TRUE;
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}
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static GstCaps * gst_siren_enc_transform_caps (GstBaseTransform * base,
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GstPadDirection direction, GstCaps * caps)
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{
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GST_DEBUG ("Transforming caps");
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if (direction == GST_PAD_SRC) {
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return gst_static_pad_template_get_caps (&sinktemplate);
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} else if (direction == GST_PAD_SINK) {
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return gst_static_pad_template_get_caps (&srctemplate);
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}
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/* Make gcc happy */
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return NULL;
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}
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static GstFlowReturn
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gst_siren_enc_transform (GstBaseTransform *trans, GstBuffer *inbuf,
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GstBuffer *outbuf)
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gst_siren_enc_chain (GstPad *pad, GstBuffer *buf)
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{
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GstSirenEnc *enc = GST_SIREN_ENC (trans);
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GstSirenEnc *enc = GST_SIREN_ENC (gst_pad_get_parent_element (pad));
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GstFlowReturn ret = GST_FLOW_OK;
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GstBuffer *encoded = NULL;
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guint8 *data = NULL;
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gint offset = 0;
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gint encode_ret = 0;
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gint size = 0;
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GST_DEBUG ("Transform");
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if (enc->encoder == NULL) {
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GST_DEBUG ("Siren encoder not set");
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GST_WARNING ("Siren encoder not set");
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return GST_FLOW_WRONG_STATE;
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}
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if (enc->adapter == NULL) {
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GST_DEBUG ("Adapter not set");
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return GST_FLOW_UNEXPECTED;
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GST_ERROR ("Adapter not set");
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return GST_FLOW_ERROR;
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}
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gst_buffer_ref (inbuf);
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gst_adapter_push (enc->adapter, inbuf);
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gst_adapter_push (enc->adapter, buf);
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GST_DEBUG ("Received buffer of size %d with adapter of size : %d",
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GST_BUFFER_SIZE (inbuf), gst_adapter_available (enc->adapter));
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GST_BUFFER_SIZE (buf), gst_adapter_available (enc->adapter));
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data = GST_BUFFER_DATA (outbuf);
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offset = 0;
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while(gst_adapter_available (enc->adapter) >= 640 &&
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offset + 40 <= GST_BUFFER_SIZE (outbuf) &&
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size = gst_adapter_available (enc->adapter);
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size /= 16;
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size -= size % 40;
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if (size == 0)
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return GST_FLOW_OK;
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ret = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
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GST_BUFFER_OFFSET (buf) / 16, size, enc->srccaps, &encoded);
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if (ret != GST_FLOW_OK)
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return ret;
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data = GST_BUFFER_DATA (encoded);
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while (gst_adapter_available (enc->adapter) >= 640 &&
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ret == GST_FLOW_OK) {
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GST_DEBUG ("Encoding frame");
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@ -305,7 +222,7 @@ gst_siren_enc_transform (GstBaseTransform *trans, GstBuffer *inbuf,
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(guint8 *)gst_adapter_peek (enc->adapter, 640),
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data + offset);
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if (encode_ret != 0) {
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GST_DEBUG ("Siren7_EncodeFrame returned %d", encode_ret);
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GST_ERROR ("Siren7_EncodeFrame returned %d", encode_ret);
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ret = GST_FLOW_ERROR;
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}
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@ -315,12 +232,37 @@ gst_siren_enc_transform (GstBaseTransform *trans, GstBuffer *inbuf,
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GST_DEBUG ("Finished encoding : %d", offset);
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GST_BUFFER_SIZE (outbuf) = offset;
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GST_BUFFER_SIZE (encoded) = offset;
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ret = gst_pad_push (enc->srcpad, encoded);
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return ret;
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}
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static GstStateChangeReturn
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gst_siren_change_state (GstElement *element, GstStateChange transition)
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{
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GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
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GstSirenEnc *enc = GST_SIREN_ENC (element);
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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if (ret == GST_STATE_CHANGE_FAILURE)
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return ret;
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switch (transition)
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{
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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GST_OBJECT_LOCK (element);
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gst_adapter_clear (enc->adapter);
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GST_OBJECT_UNLOCK (element);
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break;
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default:
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break;
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}
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return ret;
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}
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gboolean
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gst_siren_enc_plugin_init (GstPlugin *plugin)
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@ -24,7 +24,6 @@
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#define __GST_SIREN_ENC_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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#include <gst/base/gstadapter.h>
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#include "siren7.h"
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@ -51,22 +50,20 @@ typedef struct _GstSirenEncPrivate GstSirenEncPrivate;
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struct _GstSirenEnc
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{
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GstBaseTransform parent;
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GstElement parent;
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SirenEncoder encoder;
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GstAdapter *adapter;
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/*< private > */
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gpointer _gst_reserved[GST_PADDING];
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GstPad *srcpad;
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GstPad *sinkpad;
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GstCaps *srccaps;
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};
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struct _GstSirenEncClass
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{
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GstBaseTransformClass parent_class;
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/*< private > */
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gpointer _gst_reserved[GST_PADDING];
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GstElementClass parent_class;
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};
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GType gst_siren_enc_get_type (void);
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