2 #include <gst/base/gstbasetransform.h>
11 GstBaseTransformClass *klass;
13 GstPadBufferAllocFunction buffer_alloc;
16 static GstStaticPadTemplate gst_test_trans_src_template =
17 GST_STATIC_PAD_TEMPLATE ("src",
20 GST_STATIC_CAPS ("foo/x-bar")
23 static GstStaticPadTemplate gst_test_trans_sink_template =
24 GST_STATIC_PAD_TEMPLATE ("sink",
27 GST_STATIC_CAPS ("foo/x-bar")
30 typedef struct _GstTestTrans GstTestTrans;
31 typedef struct _GstTestTransClass GstTestTransClass;
33 #define GST_TYPE_TEST_TRANS \
34 (gst_test_trans_get_type())
35 #define GST_TEST_TRANS(obj) \
36 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TEST_TRANS,GstTestTrans))
37 #define GST_TEST_TRANS_CLASS(klass) \
38 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TEST_TRANS,GstTestTransClass))
39 #define GST_TEST_TRANS_GET_CLASS(obj) \
40 (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_TEST_TRANS, GstTestTransClass))
41 #define GST_IS_TEST_TRANS(obj) \
42 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TEST_TRANS))
43 #define GST_IS_TEST_TRANS_CLASS(klass) \
44 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TEST_TRANS))
48 GstBaseTransform element;
53 struct _GstTestTransClass
55 GstBaseTransformClass parent_class;
58 GType gst_test_trans_get_type (void);
60 GST_BOILERPLATE (GstTestTrans, gst_test_trans, GstBaseTransform,
61 GST_TYPE_BASE_TRANSFORM);
63 static GstFlowReturn (*klass_transform) (GstBaseTransform * trans,
64 GstBuffer * inbuf, GstBuffer * outbuf) = NULL;
65 static GstFlowReturn (*klass_transform_ip) (GstBaseTransform * trans,
66 GstBuffer * buf) = NULL;
67 static gboolean (*klass_set_caps) (GstBaseTransform * trans, GstCaps * incaps,
68 GstCaps * outcaps) = NULL;
69 static GstCaps *(*klass_transform_caps) (GstBaseTransform * trans,
70 GstPadDirection direction, GstCaps * caps) = NULL;
71 static gboolean (*klass_transform_size) (GstBaseTransform * trans,
72 GstPadDirection direction, GstCaps * caps, guint size, GstCaps * othercaps,
73 guint * othersize) = NULL;
74 static gboolean klass_passthrough_on_same_caps = FALSE;
76 static GstStaticPadTemplate *sink_template = &gst_test_trans_sink_template;
77 static GstStaticPadTemplate *src_template = &gst_test_trans_src_template;
80 gst_test_trans_base_init (gpointer g_class)
82 GstElementClass *element_class;
84 element_class = GST_ELEMENT_CLASS (g_class);
86 gst_element_class_set_details_simple (element_class, "TestTrans",
87 "Filter/Test", "Test transform", "Wim Taymans <wim.taymans@gmail.com>");
89 gst_element_class_add_pad_template (element_class,
90 gst_static_pad_template_get (sink_template));
91 gst_element_class_add_pad_template (element_class,
92 gst_static_pad_template_get (src_template));
96 gst_test_trans_class_init (GstTestTransClass * klass)
98 GstBaseTransformClass *trans_class;
100 trans_class = (GstBaseTransformClass *) klass;
102 trans_class->passthrough_on_same_caps = klass_passthrough_on_same_caps;
103 trans_class->transform_ip = klass_transform_ip;
104 trans_class->transform = klass_transform;
105 trans_class->transform_caps = klass_transform_caps;
106 trans_class->transform_size = klass_transform_size;
107 trans_class->set_caps = klass_set_caps;
111 gst_test_trans_init (GstTestTrans * this, GstTestTransClass * g_class)
116 gst_test_trans_set_data (GstTestTrans * this, TestTransData * data)
122 result_sink_chain (GstPad * pad, GstBuffer * buffer)
126 data = gst_pad_get_element_private (pad);
128 data->buffers = g_list_append (data->buffers, buffer);
134 result_buffer_alloc (GstPad * pad, guint64 offset, guint size, GstCaps * caps,
140 data = gst_pad_get_element_private (pad);
142 if (data->buffer_alloc) {
143 res = data->buffer_alloc (pad, offset, size, caps, buf);
145 *buf = gst_buffer_new_and_alloc (size);
146 gst_buffer_set_caps (*buf, caps);
153 static TestTransData *
154 gst_test_trans_new (void)
158 GstPadTemplate *templ;
160 res = g_new0 (TestTransData, 1);
161 res->trans = g_object_new (GST_TYPE_TEST_TRANS, NULL);
163 templ = gst_static_pad_template_get (sink_template);
164 templ->direction = GST_PAD_SRC;
165 res->srcpad = gst_pad_new_from_template (templ, "src");
166 gst_object_unref (templ);
168 templ = gst_static_pad_template_get (src_template);
169 templ->direction = GST_PAD_SINK;
170 res->sinkpad = gst_pad_new_from_template (templ, "sink");
171 gst_object_unref (templ);
173 res->klass = GST_BASE_TRANSFORM_GET_CLASS (res->trans);
175 gst_test_trans_set_data (GST_TEST_TRANS (res->trans), res);
176 gst_pad_set_element_private (res->sinkpad, res);
178 gst_pad_set_bufferalloc_function (res->sinkpad, result_buffer_alloc);
179 gst_pad_set_chain_function (res->sinkpad, result_sink_chain);
181 tmp = gst_element_get_static_pad (res->trans, "sink");
182 gst_pad_link (res->srcpad, tmp);
183 gst_object_unref (tmp);
185 tmp = gst_element_get_static_pad (res->trans, "src");
186 gst_pad_link (tmp, res->sinkpad);
187 gst_object_unref (tmp);
189 gst_pad_set_active (res->sinkpad, TRUE);
190 gst_element_set_state (res->trans, GST_STATE_PAUSED);
191 gst_pad_set_active (res->srcpad, TRUE);
197 gst_test_trans_free (TestTransData * data)
201 gst_pad_set_active (data->sinkpad, FALSE);
202 gst_element_set_state (data->trans, GST_STATE_NULL);
203 gst_pad_set_active (data->srcpad, FALSE);
205 tmp = gst_element_get_static_pad (data->trans, "src");
206 gst_pad_unlink (tmp, data->sinkpad);
207 gst_object_unref (tmp);
209 tmp = gst_element_get_static_pad (data->trans, "sink");
210 gst_pad_link (data->srcpad, tmp);
211 gst_object_unref (tmp);
213 gst_object_unref (data->srcpad);
214 gst_object_unref (data->sinkpad);
215 gst_object_unref (data->trans);
221 gst_test_trans_push (TestTransData * data, GstBuffer * buffer)
225 ret = gst_pad_push (data->srcpad, buffer);
231 gst_test_trans_pop (TestTransData * data)
236 ret = data->buffers->data;
237 data->buffers = g_list_delete_link (data->buffers, data->buffers);