1/*
2Copyright (c) 2012, Broadcom Europe Ltd
3All rights reserved.
4
5Redistribution and use in source and binary forms, with or without
6modification, are permitted provided that the following conditions are met:
7 * Redistributions of source code must retain the above copyright
8 notice, this list of conditions and the following disclaimer.
9 * Redistributions in binary form must reproduce the above copyright
10 notice, this list of conditions and the following disclaimer in the
11 documentation and/or other materials provided with the distribution.
12 * Neither the name of the copyright holder nor the
13 names of its contributors may be used to endorse or promote products
14 derived from this software without specific prior written permission.
15
16THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
20DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*/
27
28#include "mmal.h"
29#include "core/mmal_component_private.h"
30#include "core/mmal_port_private.h"
31#include "util/mmal_graph.h"
32#include "mmal_logging.h"
33
34#define AGGREGATOR_PREFIX "aggregator"
35#define AGGREGATOR_PIPELINE_PREFIX "pipeline"
36
37typedef struct MMAL_GRAPH_USERDATA_T {
38 int dummy;
39} MMAL_GRAPH_USERDATA_T;
40
41static MMAL_STATUS_T aggregator_parameter_set(MMAL_GRAPH_T *graph,
42 MMAL_PORT_T *port, const MMAL_PARAMETER_HEADER_T *param)
43{
44 MMAL_PARAM_UNUSED(graph);
45 MMAL_PARAM_UNUSED(port);
46 MMAL_PARAM_UNUSED(param);
47 LOG_TRACE("graph %p, port %p, param %p", graph, port, param);
48 return MMAL_ENOSYS;
49}
50
51static MMAL_STATUS_T aggregator_parameter_get(MMAL_GRAPH_T *graph,
52 MMAL_PORT_T *port, MMAL_PARAMETER_HEADER_T *param)
53{
54 MMAL_PARAM_UNUSED(graph);
55 MMAL_PARAM_UNUSED(port);
56 MMAL_PARAM_UNUSED(param);
57 LOG_TRACE("graph %p, port %p, param %p", graph, port, param);
58 return MMAL_ENOSYS;
59}
60
61/** Create an instance of a component */
62static MMAL_STATUS_T mmal_component_create_aggregator_pipeline(const char *full_name,
63 const char *component_names, MMAL_COMPONENT_T *component)
64{
65 MMAL_GRAPH_T *graph = 0;
66 MMAL_COMPONENT_T *subcomponent[2] = {0};
67 MMAL_STATUS_T status = MMAL_ENOMEM;
68 unsigned int length;
69 char *orig, *names;
70
71 length = strlen(component_names);
72 names = orig = vcos_calloc(1, length + 1, "mmal aggregator");
73 if (!names)
74 goto error;
75 memcpy(names, component_names, length);
76
77 /* We'll build the aggregator using a graph */
78 status = mmal_graph_create(&graph, sizeof(MMAL_GRAPH_USERDATA_T));
79 if (status != MMAL_SUCCESS)
80 goto error;
81 graph->pf_parameter_get = aggregator_parameter_get;
82 graph->pf_parameter_set = aggregator_parameter_set;
83
84 /* Iterate through all the specified components */
85 while (*names)
86 {
87 MMAL_CONNECTION_T *connection;
88 const char *name;
89
90 /* Switch to a new connection */
91 if (subcomponent[0])
92 mmal_component_destroy(subcomponent[0]);
93 subcomponent[0] = subcomponent[1];
94 subcomponent[1] = 0;
95
96 /* Extract the name of the next component */
97 for (name = names; *names && *names != ':'; names++);
98
99 /* Replace the separator */
100 if (*names)
101 *(names++) = 0;
102
103 /* Skip empty strings */
104 if (!*name)
105 continue;
106
107 status = mmal_component_create(name, &subcomponent[1]);
108 if (status != MMAL_SUCCESS)
109 goto error;
110
111 status = mmal_graph_add_component(graph, subcomponent[1]);
112 if (status != MMAL_SUCCESS)
113 goto error;
114
115 /* Special case for dealing with the first component in the chain */
116 if (!subcomponent[0])
117 {
118 /* Add first input port if any */
119 if (subcomponent[1]->input_num)
120 {
121 status = mmal_graph_add_port(graph, subcomponent[1]->input[0]);
122 if (status != MMAL_SUCCESS)
123 goto error;
124 }
125 continue;
126 }
127
128 /* Create connection between the 2 ports */
129 if (subcomponent[0]->output_num < 1 || subcomponent[1]->input_num < 1)
130 goto error;
131 status = mmal_connection_create(&connection, subcomponent[0]->output[0],
132 subcomponent[1]->input[0], 0);
133 if (status != MMAL_SUCCESS)
134 goto error;
135
136 status = mmal_graph_add_connection(graph, connection);
137 /* Now the connection is added to the graph we don't care about it anymore */
138 mmal_connection_destroy(connection);
139 if (status != MMAL_SUCCESS)
140 goto error;
141 }
142
143 /* Add last output port if any */
144 if (subcomponent[1] && subcomponent[1]->output_num && subcomponent[1]->output[0])
145 {
146 status = mmal_graph_add_port(graph, subcomponent[1]->output[0]);
147 if (status != MMAL_SUCCESS)
148 goto error;
149 }
150
151 /* Build the graph */
152 component->priv->module = (struct MMAL_COMPONENT_MODULE_T *)graph;
153 status = mmal_graph_component_constructor(full_name, component);
154 if (status != MMAL_SUCCESS)
155 goto error;
156
157 end:
158 if (subcomponent[0])
159 mmal_component_destroy(subcomponent[0]);
160 if (subcomponent[1])
161 mmal_component_destroy(subcomponent[1]);
162 vcos_free(orig);
163 return status;
164
165 error:
166 if (graph)
167 mmal_graph_destroy(graph);
168 goto end;
169}
170
171/** Create an instance of a component */
172static MMAL_STATUS_T mmal_component_create_aggregator(const char *name, MMAL_COMPONENT_T *component)
173{
174 const char *stripped = name + sizeof(AGGREGATOR_PREFIX);
175
176 /* Select the requested aggregator */
177 if (!strncmp(stripped, AGGREGATOR_PIPELINE_PREFIX ":", sizeof(AGGREGATOR_PIPELINE_PREFIX)))
178 return mmal_component_create_aggregator_pipeline(name,
179 stripped + sizeof(AGGREGATOR_PIPELINE_PREFIX), component);
180
181 return MMAL_ENOSYS;
182}
183
184MMAL_CONSTRUCTOR(mmal_register_component_aggregator);
185void mmal_register_component_aggregator(void)
186{
187 mmal_component_supplier_register(AGGREGATOR_PREFIX, mmal_component_create_aggregator);
188}
189