Commit 9290baba authored by Wim Taymans's avatar Wim Taymans

goom: port goom

parent 710fa239
/* 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
......@@ -86,9 +87,6 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
);
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,
......@@ -100,48 +98,8 @@ static gboolean gst_goom_sink_event (GstPad * pad, GstEvent * event);
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)
......@@ -152,10 +110,17 @@ 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);
}
......@@ -168,13 +133,9 @@ gst_goom_init (GstGoom * goom)
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,
......@@ -203,6 +164,8 @@ gst_goom_finalize (GObject * object)
goom->plugin = NULL;
g_object_unref (goom->adapter);
if (goom->pool)
gst_object_unref (goom->pool);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
......@@ -220,14 +183,11 @@ gst_goom_reset (GstGoom * goom)
}
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);
......@@ -235,24 +195,21 @@ gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps)
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);
......@@ -266,32 +223,46 @@ gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
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
gst_goom_src_negotiate (GstGoom * goom)
{
gboolean res;
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);
......@@ -300,7 +271,42 @@ gst_goom_src_negotiate (GstGoom * goom)
gst_structure_fixate_field_nearest_fraction (structure, "framerate",
DEFAULT_FPS_N, DEFAULT_FPS_D);
gst_pad_set_caps (goom->srcpad, target);
res = 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 = 1;
}
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, 0,
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;
......@@ -327,7 +333,7 @@ gst_goom_src_event (GstPad * pad, GstEvent * event)
GstClockTimeDiff diff;
GstClockTime timestamp;
gst_event_parse_qos (event, &proportion, &diff, &timestamp);
gst_event_parse_qos (event, NULL, &proportion, &diff, &timestamp);
/* save stuff for the _chain() function */
GST_OBJECT_LOCK (goom);
......@@ -361,6 +367,14 @@ gst_goom_sink_event (GstPad * pad, GstEvent * event)
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;
......@@ -368,22 +382,12 @@ gst_goom_sink_event (GstPad * pad, GstEvent * event)
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;
......@@ -454,29 +458,26 @@ gst_goom_src_query (GstPad * pad, GstQuery * query)
return res;
}
/* make sure we are negotiated */
static GstFlowReturn
get_buffer (GstGoom * goom, GstBuffer ** outbuf)
ensure_negotiated (GstGoom * goom)
{
GstFlowReturn ret;
gboolean reconfigure;
if (GST_PAD_CAPS (goom->srcpad) == NULL) {
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);
/* 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)
{
......@@ -490,15 +491,12 @@ 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);
/* 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 */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
......@@ -507,7 +505,7 @@ gst_goom_chain (GstPad * pad, GstBuffer * 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);
......@@ -565,7 +563,7 @@ gst_goom_chain (GstPad * pad, GstBuffer * 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) {
......@@ -583,18 +581,21 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
/* 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),
......@@ -645,6 +646,11 @@ gst_goom_change_state (GstElement * element, GstStateChange transition)
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;
......
......@@ -57,6 +57,7 @@ struct _GstGoom
gint height;
GstClockTime duration;
guint outsize;
GstBufferPool *pool;
/* samples per frame */
guint spf;
......
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