ARG_0
};
-static void gst_mulawenc_class_init (GstMuLawEncClass * klass);
-static void gst_mulawenc_base_init (GstMuLawEncClass * klass);
-static void gst_mulawenc_init (GstMuLawEnc * mulawenc);
-
+static gboolean gst_mulawenc_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer);
-static GstElementClass *parent_class = NULL;
+#define gst_mulawenc_parent_class parent_class
+G_DEFINE_TYPE (GstMuLawEnc, gst_mulawenc, GST_TYPE_ELEMENT);
/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 }; */
static GstCaps *
-mulawenc_getcaps (GstPad * pad)
+mulawenc_getcaps (GstPad * pad, GstCaps * filter)
{
GstMuLawEnc *mulawenc;
GstPad *otherpad;
otherpad = mulawenc->srcpad;
}
/* get caps from the peer, this can return NULL when there is no peer */
- othercaps = gst_pad_peer_get_caps (otherpad);
+ othercaps = gst_pad_peer_get_caps (otherpad, filter);
/* get the template caps to make sure we return something acceptable */
templ = gst_pad_get_pad_template_caps (pad);
}
static gboolean
-mulawenc_setcaps (GstPad * pad, GstCaps * caps)
+mulawenc_setcaps (GstMuLawEnc * mulawenc, GstCaps * caps)
{
- GstMuLawEnc *mulawenc;
- GstPad *otherpad;
GstStructure *structure;
GstCaps *base_caps;
- mulawenc = GST_MULAWENC (gst_pad_get_parent (pad));
-
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "channels", &mulawenc->channels);
gst_structure_get_int (structure, "rate", &mulawenc->rate);
- if (pad == mulawenc->sinkpad) {
- otherpad = mulawenc->srcpad;
- } else {
- otherpad = mulawenc->sinkpad;
- }
- base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
+ base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (mulawenc->srcpad));
structure = gst_caps_get_structure (base_caps, 0);
gst_structure_set (structure, "rate", G_TYPE_INT, mulawenc->rate, NULL);
gst_structure_set (structure, "channels", G_TYPE_INT, mulawenc->channels,
NULL);
- gst_pad_set_caps (otherpad, base_caps);
+ gst_pad_set_caps (mulawenc->srcpad, base_caps);
- gst_object_unref (mulawenc);
gst_caps_unref (base_caps);
return TRUE;
}
-GType
-gst_mulawenc_get_type (void)
-{
- static GType mulawenc_type = 0;
-
- if (!mulawenc_type) {
- static const GTypeInfo mulawenc_info = {
- sizeof (GstMuLawEncClass),
- (GBaseInitFunc) gst_mulawenc_base_init,
- NULL,
- (GClassInitFunc) gst_mulawenc_class_init,
- NULL,
- NULL,
- sizeof (GstMuLawEnc),
- 0,
- (GInstanceInitFunc) gst_mulawenc_init,
- };
-
- mulawenc_type =
- g_type_register_static (GST_TYPE_ELEMENT, "GstMuLawEnc", &mulawenc_info,
- 0);
- }
- return mulawenc_type;
-}
-
static void
-gst_mulawenc_base_init (GstMuLawEncClass * klass)
+gst_mulawenc_class_init (GstMuLawEncClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_static_pad_template_get (&mulaw_enc_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mulaw_enc_sink_factory));
+
gst_element_class_set_details_simple (element_class, "Mu Law audio encoder",
"Codec/Encoder/Audio",
"Convert 16bit PCM to 8bit mu law",
}
static void
-gst_mulawenc_class_init (GstMuLawEncClass * klass)
-{
- parent_class = g_type_class_peek_parent (klass);
-}
-
-static void
gst_mulawenc_init (GstMuLawEnc * mulawenc)
{
mulawenc->sinkpad =
gst_pad_new_from_static_template (&mulaw_enc_sink_factory, "sink");
- gst_pad_set_setcaps_function (mulawenc->sinkpad, mulawenc_setcaps);
gst_pad_set_getcaps_function (mulawenc->sinkpad, mulawenc_getcaps);
+ gst_pad_set_event_function (mulawenc->sinkpad, gst_mulawenc_event);
gst_pad_set_chain_function (mulawenc->sinkpad, gst_mulawenc_chain);
gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->sinkpad);
mulawenc->srcpad =
gst_pad_new_from_static_template (&mulaw_enc_src_factory, "src");
- gst_pad_set_setcaps_function (mulawenc->srcpad, mulawenc_setcaps);
gst_pad_set_getcaps_function (mulawenc->srcpad, mulawenc_getcaps);
gst_pad_use_fixed_caps (mulawenc->srcpad);
gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->srcpad);
mulawenc->rate = 0;
}
+static gboolean
+gst_mulawenc_event (GstPad * pad, GstEvent * event)
+{
+ GstMuLawEnc *mulawenc;
+ gboolean res;
+
+ mulawenc = GST_MULAWENC (GST_PAD_PARENT (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_CAPS:
+ {
+ GstCaps *caps;
+
+ gst_event_parse_caps (event, &caps);
+ mulawenc_setcaps (mulawenc, caps);
+ gst_event_unref (event);
+
+ res = TRUE;
+ break;
+ }
+ default:
+ res = gst_pad_event_default (pad, event);
+ break;
+ }
+ return res;
+}
+
static GstFlowReturn
gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer)
{
GstMuLawEnc *mulawenc;
gint16 *linear_data;
- guint linear_size;
+ gsize linear_size;
guint8 *mulaw_data;
guint mulaw_size;
GstBuffer *outbuf;
if (!mulawenc->rate || !mulawenc->channels)
goto not_negotiated;
- linear_data = (gint16 *) GST_BUFFER_DATA (buffer);
- linear_size = GST_BUFFER_SIZE (buffer);
+ linear_data = gst_buffer_map (buffer, &linear_size, NULL, GST_MAP_READ);
mulaw_size = linear_size / 2;
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
- ret = gst_pad_alloc_buffer_and_set_caps (mulawenc->srcpad,
- GST_BUFFER_OFFSET_NONE, mulaw_size, GST_PAD_CAPS (mulawenc->srcpad),
- &outbuf);
- if (ret != GST_FLOW_OK)
- goto alloc_failed;
+ outbuf = gst_buffer_new_allocate (NULL, mulaw_size, 0);
if (duration == -1) {
duration = gst_util_uint64_scale_int (mulaw_size,
GST_SECOND, mulawenc->rate * mulawenc->channels);
}
- if (GST_BUFFER_SIZE (outbuf) < mulaw_size) {
- /* pad-alloc can suggest a smaller size */
- gst_buffer_unref (outbuf);
- outbuf = gst_buffer_new_and_alloc (mulaw_size);
- }
-
- mulaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);
+ mulaw_data = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
/* copy discont flag */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
- gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawenc->srcpad));
-
mulaw_encode (linear_data, mulaw_data, mulaw_size);
+ gst_buffer_unmap (outbuf, mulaw_data, -1);
+ gst_buffer_unmap (buffer, linear_data, -1);
gst_buffer_unref (buffer);
ret = gst_pad_push (mulawenc->srcpad, outbuf);
gst_buffer_unref (buffer);
goto done;
}
-alloc_failed:
- {
- GST_DEBUG_OBJECT (mulawenc, "pad alloc failed");
- gst_buffer_unref (buffer);
- goto done;
- }
}
projects / platform / upstream / gstreamer.git / blobdiff