GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN)
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("xRGB"))
+#else
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("BGRx"))
+#endif
);
static GstStaticPadTemplate gst_synaesthesia_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS)
+ GST_STATIC_CAPS ("audio/x-raw, "
+ "format = (string) " GST_AUDIO_NE (S16) ", "
+ "rate = (int) [ 8000, 96000 ], "
+ "channels = (int) 2, "
+ "channel-mask = (bitmask) 0x3, " "layout = (string) interleaved")
);
static void gst_synaesthesia_finalize (GObject * object);
static void gst_synaesthesia_dispose (GObject * object);
-static GstFlowReturn gst_synaesthesia_chain (GstPad * pad, GstBuffer * buffer);
+static GstFlowReturn gst_synaesthesia_chain (GstPad * pad, GstObject * parent,
+ GstBuffer * buffer);
+static gboolean gst_synaesthesia_sink_event (GstPad * pad, GstObject * parent,
+ GstEvent * event);
static GstStateChangeReturn
gst_synaesthesia_change_state (GstElement * element, GstStateChange transition);
static gboolean gst_synaesthesia_src_negotiate (GstSynaesthesia * synaesthesia);
-static gboolean gst_synaesthesia_src_setcaps (GstPad * pad, GstCaps * caps);
-static gboolean gst_synaesthesia_sink_setcaps (GstPad * pad, GstCaps * caps);
-
-GST_BOILERPLATE (GstSynaesthesia, gst_synaesthesia, GstElement,
- GST_TYPE_ELEMENT);
-
-static void
-gst_synaesthesia_base_init (gpointer g_class)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+static gboolean gst_synaesthesia_src_setcaps (GstSynaesthesia * synaesthesia,
+ GstCaps * caps);
+static gboolean gst_synaesthesia_sink_setcaps (GstSynaesthesia * synaesthesia,
+ GstCaps * caps);
- gst_element_class_set_details_simple (element_class, "Synaesthesia",
- "Visualization",
- "Creates video visualizations of audio input, using stereo and pitch information",
- "Richard Boulton <richard@tartarus.org>");
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_synaesthesia_src_template));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_synaesthesia_sink_template));
-}
+#define gst_synaesthesia_parent_class parent_class
+G_DEFINE_TYPE (GstSynaesthesia, gst_synaesthesia, GST_TYPE_ELEMENT);
static void
gst_synaesthesia_class_init (GstSynaesthesiaClass * klass)
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_synaesthesia_change_state);
+ gst_element_class_set_details_simple (gstelement_class, "Synaesthesia",
+ "Visualization",
+ "Creates video visualizations of audio input, using stereo and pitch information",
+ "Richard Boulton <richard@tartarus.org>");
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&gst_synaesthesia_src_template));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&gst_synaesthesia_sink_template));
+
synaesthesia_init ();
}
static void
-gst_synaesthesia_init (GstSynaesthesia * synaesthesia,
- GstSynaesthesiaClass * g_class)
+gst_synaesthesia_init (GstSynaesthesia * synaesthesia)
{
/* create the sink and src pads */
synaesthesia->sinkpad =
"sink");
gst_pad_set_chain_function (synaesthesia->sinkpad,
GST_DEBUG_FUNCPTR (gst_synaesthesia_chain));
- gst_pad_set_setcaps_function (synaesthesia->sinkpad,
- GST_DEBUG_FUNCPTR (gst_synaesthesia_sink_setcaps));
+ gst_pad_set_event_function (synaesthesia->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_synaesthesia_sink_event));
gst_element_add_pad (GST_ELEMENT (synaesthesia), synaesthesia->sinkpad);
synaesthesia->srcpad =
gst_pad_new_from_static_template (&gst_synaesthesia_src_template, "src");
- gst_pad_set_setcaps_function (synaesthesia->srcpad,
- GST_DEBUG_FUNCPTR (gst_synaesthesia_src_setcaps));
gst_element_add_pad (GST_ELEMENT (synaesthesia), synaesthesia->srcpad);
synaesthesia->adapter = gst_adapter_new ();
}
static gboolean
-gst_synaesthesia_sink_setcaps (GstPad * pad, GstCaps * caps)
+gst_synaesthesia_sink_setcaps (GstSynaesthesia * synaesthesia, GstCaps * caps)
{
- GstSynaesthesia *synaesthesia;
GstStructure *structure;
gint channels;
gint rate;
gboolean res = TRUE;
- synaesthesia = GST_SYNAESTHESIA (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "channels", &channels) ||
synaesthesia->rate = rate;
done:
- gst_object_unref (synaesthesia);
return res;
/* Errors */
GstCaps *othercaps, *target, *intersect;
GstStructure *structure;
const GstCaps *templ;
+ GstQuery *query;
+ GstBufferPool *pool = NULL;
+ guint size, min, max, prefix, alignment;
templ = gst_pad_get_pad_template_caps (synaesthesia->srcpad);
GST_DEBUG_OBJECT (synaesthesia, "performing negotiation");
/* see what the peer can do */
- othercaps = gst_pad_peer_get_caps (synaesthesia->srcpad);
+ othercaps = gst_pad_peer_query_caps (synaesthesia->srcpad, NULL);
if (othercaps) {
intersect = gst_caps_intersect (othercaps, templ);
gst_caps_unref (othercaps);
GST_DEBUG_OBJECT (synaesthesia, "final caps are %" GST_PTR_FORMAT, target);
- gst_pad_set_caps (synaesthesia->srcpad, target);
+ gst_synaesthesia_src_setcaps (synaesthesia, target);
+
+ /* try to get a bufferpool now */
+ /* find a pool for the negotiated caps now */
+ query = gst_query_new_allocation (target, TRUE);
+
+ if (gst_pad_peer_query (synaesthesia->srcpad, query)) {
+ /* we got configuration from our peer, parse them */
+ gst_query_parse_allocation_params (query, &size, &min, &max, &prefix,
+ &alignment, &pool);
+ } else {
+ size = synaesthesia->outsize;
+ min = max = 0;
+ prefix = 0;
+ alignment = 0;
+ }
+
+ if (pool == NULL) {
+ GstStructure *config;
+
+ /* we did not get a pool, make one ourselves then */
+ pool = gst_buffer_pool_new ();
+
+ config = gst_buffer_pool_get_config (pool);
+ gst_buffer_pool_config_set (config, target, size, min, max, prefix,
+ alignment);
+ gst_buffer_pool_set_config (pool, config);
+ }
+
+ if (synaesthesia->pool)
+ gst_object_unref (synaesthesia->pool);
+ synaesthesia->pool = pool;
+
+ /* and activate */
+ gst_buffer_pool_set_active (pool, TRUE);
+
gst_caps_unref (target);
return TRUE;
}
static gboolean
-gst_synaesthesia_src_setcaps (GstPad * pad, GstCaps * caps)
+gst_synaesthesia_src_setcaps (GstSynaesthesia * synaesthesia, GstCaps * caps)
{
- GstSynaesthesia *synaesthesia;
GstStructure *structure;
gint w, h;
gint num, denom;
gboolean res = TRUE;
- synaesthesia = GST_SYNAESTHESIA (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &w) ||
synaesthesia_resize (synaesthesia->si, synaesthesia->width,
synaesthesia->height);
+ /* size of the output buffer in bytes, depth is always 4 bytes */
+ synaesthesia->outsize = synaesthesia->width * synaesthesia->height * 4;
synaesthesia->frame_duration = gst_util_uint64_scale_int (GST_SECOND,
synaesthesia->fps_d, synaesthesia->fps_n);
synaesthesia->spf = gst_util_uint64_scale_int (synaesthesia->rate,
synaesthesia->width, synaesthesia->height,
synaesthesia->fps_n, synaesthesia->fps_d, synaesthesia->spf);
+ res = gst_pad_push_event (synaesthesia->srcpad, gst_event_new_caps (caps));
+
done:
- gst_object_unref (synaesthesia);
return res;
/* Errors */
}
}
+/* make sure we are negotiated */
+static GstFlowReturn
+ensure_negotiated (GstSynaesthesia * synaesthesia)
+{
+ gboolean reconfigure;
+
+ reconfigure = gst_pad_check_reconfigure (synaesthesia->srcpad);
+
+ /* we don't know an output format yet, pick one */
+ if (reconfigure || !gst_pad_has_current_caps (synaesthesia->srcpad)) {
+ if (!gst_synaesthesia_src_negotiate (synaesthesia))
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+ return GST_FLOW_OK;
+}
+
static GstFlowReturn
-gst_synaesthesia_chain (GstPad * pad, GstBuffer * buffer)
+gst_synaesthesia_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
GstFlowReturn ret = GST_FLOW_OK;
GstSynaesthesia *synaesthesia;
guint32 avail, bytesperread;
- synaesthesia = GST_SYNAESTHESIA (gst_pad_get_parent (pad));
+ synaesthesia = GST_SYNAESTHESIA (parent);
GST_LOG_OBJECT (synaesthesia, "chainfunc called");
+ if (synaesthesia->rate == 0) {
+ gst_buffer_unref (buffer);
+ ret = GST_FLOW_NOT_NEGOTIATED;
+ goto exit;
+ }
+
+ /* Make sure have an output format */
+ ret = ensure_negotiated (synaesthesia);
+ if (ret != GST_FLOW_OK) {
+ gst_buffer_unref (buffer);
+ goto exit;
+ }
+
/* resync on DISCONT */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
synaesthesia->next_ts = GST_CLOCK_TIME_NONE;
gst_adapter_clear (synaesthesia->adapter);
}
- if (GST_PAD_CAPS (synaesthesia->srcpad) == NULL) {
- if (!gst_synaesthesia_src_negotiate (synaesthesia))
- return GST_FLOW_NOT_NEGOTIATED;
- }
-
/* Match timestamps from the incoming audio */
if (GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE)
synaesthesia->next_ts = GST_BUFFER_TIMESTAMP (buffer);
avail = gst_adapter_available (synaesthesia->adapter);
while (avail > bytesperread) {
const guint16 *data =
- (const guint16 *) gst_adapter_peek (synaesthesia->adapter,
+ (const guint16 *) gst_adapter_map (synaesthesia->adapter,
bytesperread);
- GstBuffer *outbuf;
+ GstBuffer *outbuf = NULL;
guchar *out_frame;
guint i;
synaesthesia->datain[1][i] = *data++;
}
- ret =
- gst_pad_alloc_buffer_and_set_caps (synaesthesia->srcpad,
- GST_BUFFER_OFFSET_NONE,
- synaesthesia->width * synaesthesia->height * 4,
- GST_PAD_CAPS (synaesthesia->srcpad), &outbuf);
-
- /* no buffer allocated, we don't care why. */
- if (ret != GST_FLOW_OK)
- break;
+ /* alloc a buffer */
+ GST_DEBUG_OBJECT (synaesthesia, "allocating output buffer");
+ ret = gst_buffer_pool_acquire_buffer (synaesthesia->pool, &outbuf, NULL);
+ if (ret != GST_FLOW_OK) {
+ gst_adapter_unmap (synaesthesia->adapter);
+ goto exit;
+ }
GST_BUFFER_TIMESTAMP (outbuf) = synaesthesia->next_ts;
GST_BUFFER_DURATION (outbuf) = synaesthesia->frame_duration;
out_frame = (guchar *)
synaesthesia_update (synaesthesia->si, synaesthesia->datain);
- memcpy (GST_BUFFER_DATA (outbuf), out_frame, GST_BUFFER_SIZE (outbuf));
+ gst_buffer_fill (outbuf, 0, out_frame, synaesthesia->outsize);
+
+ gst_adapter_unmap (synaesthesia->adapter);
ret = gst_pad_push (synaesthesia->srcpad, outbuf);
outbuf = NULL;
avail = gst_adapter_available (synaesthesia->adapter);
}
- gst_object_unref (synaesthesia);
-
+exit:
return ret;
}
+static gboolean
+gst_synaesthesia_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
+{
+ gboolean res;
+ GstSynaesthesia *synaesthesia;
+
+ synaesthesia = GST_SYNAESTHESIA (parent);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_CAPS:
+ {
+ GstCaps *caps;
+
+ gst_event_parse_caps (event, &caps);
+ res = gst_synaesthesia_sink_setcaps (synaesthesia, caps);
+ gst_event_unref (event);
+ break;
+ }
+ default:
+ res = gst_pad_push_event (synaesthesia->srcpad, event);
+ break;
+ }
+
+ return res;
+}
+
static GstStateChangeReturn
gst_synaesthesia_change_state (GstElement * element, GstStateChange transition)
{
GstSynaesthesia *synaesthesia;
+ GstStateChangeReturn ret;
synaesthesia = GST_SYNAESTHESIA (element);
case GST_STATE_CHANGE_READY_TO_PAUSED:
synaesthesia->next_ts = GST_CLOCK_TIME_NONE;
gst_adapter_clear (synaesthesia->adapter);
+ synaesthesia->channels = synaesthesia->rate = 0;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ if (synaesthesia->pool) {
+ gst_buffer_pool_set_active (synaesthesia->pool, FALSE);
+ gst_object_replace ((GstObject **) & synaesthesia->pool, NULL);
+ }
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
- return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ return ret;
}