#include <config.h>
#endif
-#include "sbc.h"
+#include <string.h>
#include "gstsbcdec.h"
"Decode a SBC audio stream",
"Marcel Holtmann <marcel@holtmann.org>");
+static GstStaticPadTemplate sbc_dec_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-sbc"));
+
+static GstStaticPadTemplate sbc_dec_src_factory =
+GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, "
+ "rate = (int) [ 6000, 48000 ], "
+ "channels = (int) [ 1, 2 ], "
+ "endianness = (int) BYTE_ORDER, "
+ "signed = (boolean) true, " "width = (int) 16, " "depth = (int) 16"));
+
+static GstFlowReturn
+sbc_dec_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstSbcDec *dec = GST_SBC_DEC (gst_pad_get_parent (pad));
+ GstFlowReturn res = GST_FLOW_OK;
+ guint size, offset = 0;
+ guint8 *data;
+ GstClockTime timestamp;
+
+ timestamp = GST_BUFFER_TIMESTAMP (buffer);
+
+ if (dec->buffer) {
+ GstBuffer *temp = buffer;
+ buffer = gst_buffer_span (dec->buffer, 0, buffer,
+ GST_BUFFER_SIZE (dec->buffer) + GST_BUFFER_SIZE (buffer));
+ gst_buffer_unref (temp);
+ gst_buffer_unref (dec->buffer);
+ dec->buffer = NULL;
+ }
+
+ data = GST_BUFFER_DATA (buffer);
+ size = GST_BUFFER_SIZE (buffer);
+
+ while (offset < size) {
+ GstBuffer *output;
+ GstPadTemplate *template;
+ GstCaps *caps, *temp;
+ int consumed;
+
+ consumed = sbc_decode (&dec->sbc, data + offset, size - offset);
+ if (consumed <= 0)
+ break;
+
+ caps = gst_caps_new_simple ("audio/x-raw-int",
+ "rate", G_TYPE_INT, dec->sbc.rate,
+ "channels", G_TYPE_INT, dec->sbc.channels, NULL);
+
+ template = gst_static_pad_template_get (&sbc_dec_src_factory);
+
+ temp = gst_caps_intersect (caps, gst_pad_template_get_caps (template));
+
+ gst_caps_unref (caps);
+
+ res = gst_pad_alloc_buffer_and_set_caps (dec->srcpad,
+ GST_BUFFER_OFFSET_NONE, dec->sbc.len, temp, &output);
+
+ gst_caps_unref (temp);
+
+ if (res != GST_FLOW_OK)
+ goto done;
+
+ memcpy (GST_BUFFER_DATA (output), dec->sbc.data, dec->sbc.len);
+
+ res = gst_pad_push (dec->srcpad, output);
+ if (res != GST_FLOW_OK)
+ goto done;
+
+ offset += consumed;
+ }
+
+ if (offset < size)
+ dec->buffer = gst_buffer_create_sub (buffer, offset, size - offset);
+
+done:
+ gst_buffer_unref (buffer);
+ gst_object_unref (dec);
+
+ return res;
+}
+
+static GstStateChangeReturn
+sbc_dec_change_state (GstElement * element, GstStateChange transition)
+{
+ GstSbcDec *dec = GST_SBC_DEC (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ GST_DEBUG ("Setup subband codec");
+ if (dec->buffer) {
+ gst_buffer_unref (dec->buffer);
+ dec->buffer = NULL;
+ }
+ sbc_init (&dec->sbc, 0);
+ break;
+
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ GST_DEBUG ("Finish subband codec");
+ if (dec->buffer) {
+ gst_buffer_unref (dec->buffer);
+ dec->buffer = NULL;
+ }
+ sbc_finish (&dec->sbc);
+ break;
+
+ default:
+ break;
+ }
+
+ return parent_class->change_state (element, transition);
+}
+
static void
gst_sbc_dec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sbc_dec_sink_factory));
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sbc_dec_src_factory));
+
gst_element_class_set_details (element_class, &sbc_dec_details);
}
static void
gst_sbc_dec_class_init (GstSbcDecClass * klass)
{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
parent_class = g_type_class_peek_parent (klass);
+ gstelement_class->change_state = GST_DEBUG_FUNCPTR (sbc_dec_change_state);
+
GST_DEBUG_CATEGORY_INIT (sbc_dec_debug, "sbcdec", 0, "SBC decoding element");
}
static void
-gst_sbc_dec_init (GstSbcDec * sbcdec, GstSbcDecClass * klass)
+gst_sbc_dec_init (GstSbcDec * self, GstSbcDecClass * klass)
{
+ self->sinkpad =
+ gst_pad_new_from_static_template (&sbc_dec_sink_factory, "sink");
+ gst_pad_set_chain_function (self->sinkpad, GST_DEBUG_FUNCPTR (sbc_dec_chain));
+ gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
+
+ self->srcpad = gst_pad_new_from_static_template (&sbc_dec_src_factory, "src");
+ gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
}