/* gstgoom.c: implementation of goom drawing element
* Copyright (C) <2001> Richard Boulton <richard@tartarus.org>
* (C) <2006> Wim Taymans <wim at fluendo dot com>
+ * (C) <2011> Wim Taymans <wim.taymans at gmail dot com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
);
-static void gst_goom_class_init (GstGoomClass * klass);
-static void gst_goom_base_init (GstGoomClass * klass);
-static void gst_goom_init (GstGoom * goom);
static void gst_goom_finalize (GObject * object);
static GstStateChangeReturn gst_goom_change_state (GstElement * element,
static gboolean gst_goom_src_query (GstPad * pad, GstQuery * query);
-static gboolean gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps);
-static gboolean gst_goom_src_setcaps (GstPad * pad, GstCaps * caps);
-
-static GstElementClass *parent_class = NULL;
-
-GType
-gst_goom_get_type (void)
-{
- static GType type = 0;
-
- if (!type) {
- static const GTypeInfo info = {
- sizeof (GstGoomClass),
- (GBaseInitFunc) gst_goom_base_init,
- NULL,
- (GClassInitFunc) gst_goom_class_init,
- NULL,
- NULL,
- sizeof (GstGoom),
- 0,
- (GInstanceInitFunc) gst_goom_init,
- };
-
- type = g_type_register_static (GST_TYPE_ELEMENT, "GstGoom", &info, 0);
- }
- return type;
-}
-
-static void
-gst_goom_base_init (GstGoomClass * klass)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
-
- gst_element_class_set_details_simple (element_class, "GOOM: what a GOOM!",
- "Visualization",
- "Takes frames of data and outputs video frames using the GOOM filter",
- "Wim Taymans <wim@fluendo.com>");
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&sink_template));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&src_template));
-}
+#define gst_goom_parent_class parent_class
+G_DEFINE_TYPE (GstGoom, gst_goom, GST_TYPE_ELEMENT);
static void
gst_goom_class_init (GstGoomClass * klass)
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
- parent_class = g_type_class_peek_parent (klass);
-
gobject_class->finalize = gst_goom_finalize;
+ gst_element_class_set_details_simple (gstelement_class, "GOOM: what a GOOM!",
+ "Visualization",
+ "Takes frames of data and outputs video frames using the GOOM filter",
+ "Wim Taymans <wim@fluendo.com>");
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&sink_template));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&src_template));
+
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_goom_change_state);
}
GST_DEBUG_FUNCPTR (gst_goom_chain));
gst_pad_set_event_function (goom->sinkpad,
GST_DEBUG_FUNCPTR (gst_goom_sink_event));
- gst_pad_set_setcaps_function (goom->sinkpad,
- GST_DEBUG_FUNCPTR (gst_goom_sink_setcaps));
gst_element_add_pad (GST_ELEMENT (goom), goom->sinkpad);
goom->srcpad = gst_pad_new_from_static_template (&src_template, "src");
- gst_pad_set_setcaps_function (goom->srcpad,
- GST_DEBUG_FUNCPTR (gst_goom_src_setcaps));
gst_pad_set_event_function (goom->srcpad,
GST_DEBUG_FUNCPTR (gst_goom_src_event));
gst_pad_set_query_function (goom->srcpad,
goom->plugin = NULL;
g_object_unref (goom->adapter);
+ if (goom->pool)
+ gst_object_unref (goom->pool);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
}
static gboolean
-gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps)
+gst_goom_sink_setcaps (GstGoom * goom, GstCaps * caps)
{
- GstGoom *goom;
GstStructure *structure;
- gboolean res;
-
- goom = GST_GOOM (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0);
- res = gst_structure_get_int (structure, "channels", &goom->channels);
- res &= gst_structure_get_int (structure, "rate", &goom->rate);
+ gst_structure_get_int (structure, "channels", &goom->channels);
+ gst_structure_get_int (structure, "rate", &goom->rate);
goom->bps = goom->channels * sizeof (gint16);
- return res;
+ return TRUE;
}
static gboolean
-gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
+gst_goom_src_setcaps (GstGoom * goom, GstCaps * caps)
{
- GstGoom *goom;
GstStructure *structure;
-
- goom = GST_GOOM (GST_PAD_PARENT (pad));
+ gboolean res;
structure = gst_caps_get_structure (caps, 0);
-
if (!gst_structure_get_int (structure, "width", &goom->width) ||
!gst_structure_get_int (structure, "height", &goom->height) ||
!gst_structure_get_fraction (structure, "framerate", &goom->fps_n,
&goom->fps_d))
- return FALSE;
+ goto error;
goom_set_resolution (goom->plugin, goom->width, goom->height);
GST_DEBUG_OBJECT (goom, "dimension %dx%d, framerate %d/%d, spf %d",
goom->width, goom->height, goom->fps_n, goom->fps_d, goom->spf);
- return TRUE;
+ res = gst_pad_push_event (goom->srcpad, gst_event_new_caps (caps));
+
+ return res;
+
+ /* ERRORS */
+error:
+ {
+ GST_DEBUG_OBJECT (goom, "error parsing caps");
+ return FALSE;
+ }
}
static gboolean
{
GstCaps *othercaps, *target;
GstStructure *structure;
- const GstCaps *templ;
+ GstCaps *templ;
+ GstQuery *query;
+ GstBufferPool *pool = NULL;
+ guint size, min, max, prefix, alignment;
templ = gst_pad_get_pad_template_caps (goom->srcpad);
GST_DEBUG_OBJECT (goom, "performing negotiation");
/* see what the peer can do */
- othercaps = gst_pad_peer_get_caps (goom->srcpad);
+ othercaps = gst_pad_peer_get_caps (goom->srcpad, NULL);
if (othercaps) {
target = gst_caps_intersect (othercaps, templ);
gst_caps_unref (othercaps);
+ gst_caps_unref (templ);
if (gst_caps_is_empty (target))
goto no_format;
gst_caps_truncate (target);
} else {
- target = gst_caps_ref ((GstCaps *) templ);
+ target = templ;
}
structure = gst_caps_get_structure (target, 0);
gst_structure_fixate_field_nearest_fraction (structure, "framerate",
DEFAULT_FPS_N, DEFAULT_FPS_D);
- gst_pad_set_caps (goom->srcpad, target);
+ gst_goom_src_setcaps (goom, 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 (goom->srcpad, query)) {
+ /* we got configuration from our peer, parse them */
+ gst_query_parse_allocation_params (query, &size, &min, &max, &prefix,
+ &alignment, &pool);
+ } else {
+ size = goom->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 (goom->pool)
+ gst_object_unref (goom->pool);
+ goom->pool = pool;
+
+ /* and activate */
+ gst_buffer_pool_set_active (pool, TRUE);
+
gst_caps_unref (target);
return TRUE;
GstClockTimeDiff diff;
GstClockTime timestamp;
- gst_event_parse_qos (event, &proportion, &diff, ×tamp);
+ gst_event_parse_qos (event, NULL, &proportion, &diff, ×tamp);
/* save stuff for the _chain() function */
GST_OBJECT_LOCK (goom);
goom = GST_GOOM (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_CAPS:
+ {
+ GstCaps *caps;
+
+ gst_event_parse_caps (event, &caps);
+ res = gst_goom_sink_setcaps (goom, caps);
+ break;
+ }
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (goom->srcpad, event);
break;
gst_goom_reset (goom);
res = gst_pad_push_event (goom->srcpad, event);
break;
- case GST_EVENT_NEWSEGMENT:
+ case GST_EVENT_SEGMENT:
{
- GstFormat format;
- gdouble rate, arate;
- gint64 start, stop, time;
- gboolean update;
-
/* the newsegment values are used to clip the input samples
* and to convert the incomming timestamps to running time so
* we can do QoS */
- gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
- &start, &stop, &time);
-
- /* now configure the values */
- gst_segment_set_newsegment_full (&goom->segment, update,
- rate, arate, format, start, stop, time);
+ gst_event_copy_segment (event, &goom->segment);
res = gst_pad_push_event (goom->srcpad, event);
break;
return res;
}
+/* make sure we are negotiated */
static GstFlowReturn
-get_buffer (GstGoom * goom, GstBuffer ** outbuf)
+ensure_negotiated (GstGoom * goom)
{
- GstFlowReturn ret;
+ gboolean reconfigure;
+
+ GST_OBJECT_LOCK (goom->srcpad);
+ reconfigure = GST_PAD_NEEDS_RECONFIGURE (goom->srcpad);
+ GST_OBJECT_FLAG_UNSET (goom->srcpad, GST_PAD_NEED_RECONFIGURE);
+ GST_OBJECT_UNLOCK (goom->srcpad);
- if (GST_PAD_CAPS (goom->srcpad) == NULL) {
+ /* we don't know an output format yet, pick one */
+ if (reconfigure || !gst_pad_has_current_caps (goom->srcpad)) {
if (!gst_goom_src_negotiate (goom))
return GST_FLOW_NOT_NEGOTIATED;
}
-
- GST_DEBUG_OBJECT (goom, "allocating output buffer with caps %"
- GST_PTR_FORMAT, GST_PAD_CAPS (goom->srcpad));
-
- ret =
- gst_pad_alloc_buffer_and_set_caps (goom->srcpad,
- GST_BUFFER_OFFSET_NONE, goom->outsize,
- GST_PAD_CAPS (goom->srcpad), outbuf);
- if (ret != GST_FLOW_OK)
- return ret;
-
return GST_FLOW_OK;
}
+
static GstFlowReturn
gst_goom_chain (GstPad * pad, GstBuffer * buffer)
{
goto beach;
}
- /* If we don't have an output format yet, preallocate a buffer to try and
- * set one */
- if (GST_PAD_CAPS (goom->srcpad) == NULL) {
- ret = get_buffer (goom, &outbuf);
- if (ret != GST_FLOW_OK) {
- gst_buffer_unref (buffer);
- goto beach;
- }
+ /* Make sure have an output format */
+ ret = ensure_negotiated (goom);
+ if (ret != GST_FLOW_OK) {
+ gst_buffer_unref (buffer);
+ goto beach;
}
/* don't try to combine samples from discont buffer */
GST_DEBUG_OBJECT (goom,
"Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
- GST_BUFFER_SIZE (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
+ gst_buffer_get_size (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
/* Collect samples until we have enough for an output frame */
gst_adapter_push (goom->adapter, buffer);
/* get next GOOM_SAMPLES, we have at least this amount of samples */
data =
- (const guint16 *) gst_adapter_peek (goom->adapter,
+ (const guint16 *) gst_adapter_map (goom->adapter,
GOOM_SAMPLES * goom->bps);
if (goom->channels == 2) {
/* alloc a buffer if we don't have one yet, this happens
* when we pushed a buffer in this while loop before */
if (outbuf == NULL) {
- ret = get_buffer (goom, &outbuf);
+ GST_DEBUG_OBJECT (goom, "allocating output buffer");
+ ret = gst_buffer_pool_acquire_buffer (goom->pool, &outbuf, NULL);
if (ret != GST_FLOW_OK) {
+ gst_adapter_unmap (goom->adapter, 0);
goto beach;
}
}
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = goom->duration;
- GST_BUFFER_SIZE (outbuf) = goom->outsize;
out_frame = (guchar *) goom_update (goom->plugin, goom->datain, 0, 0);
- memcpy (GST_BUFFER_DATA (outbuf), out_frame, goom->outsize);
+ gst_buffer_fill (outbuf, 0, out_frame, goom->outsize);
+
+ gst_adapter_unmap (goom->adapter, 0);
GST_DEBUG ("Pushing frame with time=%" GST_TIME_FORMAT ", duration=%"
GST_TIME_FORMAT, GST_TIME_ARGS (timestamp),
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
+ if (goom->pool) {
+ gst_buffer_pool_set_active (goom->pool, FALSE);
+ gst_object_unref (goom->pool);
+ goom->pool = NULL;
+ }
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
projects / platform / upstream / gstreamer.git / blobdiff