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 "mmal_port_private.h"
30#include "mmal_buffer.h"
31#include "mmal_logging.h"
32
33MMAL_EVENT_FORMAT_CHANGED_T *mmal_event_format_changed_get(MMAL_BUFFER_HEADER_T *buffer)
34{
35 MMAL_EVENT_FORMAT_CHANGED_T *event;
36 MMAL_ES_FORMAT_T *format;
37 uint32_t size;
38
39 size = sizeof(MMAL_EVENT_FORMAT_CHANGED_T);
40 size += sizeof(MMAL_ES_FORMAT_T) + sizeof(MMAL_ES_SPECIFIC_FORMAT_T);
41
42 if (!buffer || buffer->cmd != MMAL_EVENT_FORMAT_CHANGED || buffer->length < size)
43 return 0;
44
45 event = (MMAL_EVENT_FORMAT_CHANGED_T *)buffer->data;
46 format = event->format = (MMAL_ES_FORMAT_T *)&event[1];
47 format->es = (MMAL_ES_SPECIFIC_FORMAT_T *)&format[1];
48 format->extradata = (uint8_t *)&format->es[1];
49 format->extradata_size = buffer->length - size;
50 return event;
51}
52
53MMAL_STATUS_T mmal_event_error_send(MMAL_COMPONENT_T *component, MMAL_STATUS_T error_status)
54{
55 MMAL_BUFFER_HEADER_T* event;
56 MMAL_STATUS_T status;
57
58 if(!component)
59 {
60 LOG_ERROR("invalid component");
61 return MMAL_EINVAL;
62 }
63
64 status = mmal_port_event_get(component->control, &event, MMAL_EVENT_ERROR);
65 if (status != MMAL_SUCCESS)
66 {
67 LOG_ERROR("event not available for component %s %p, result %d", component->name, component, status);
68 return status;
69 }
70
71 event->length = sizeof(MMAL_STATUS_T);
72 *(MMAL_STATUS_T *)event->data = error_status;
73 mmal_port_event_send(component->control, event);
74
75 return MMAL_SUCCESS;
76}
77
78MMAL_STATUS_T mmal_event_eos_send(MMAL_PORT_T *port)
79{
80 MMAL_EVENT_END_OF_STREAM_T *event;
81 MMAL_BUFFER_HEADER_T *buffer;
82 MMAL_STATUS_T status;
83
84 if(!port)
85 {
86 LOG_ERROR("invalid port");
87 return MMAL_EINVAL;
88 }
89
90 status = mmal_port_event_get(port->component->control, &buffer, MMAL_EVENT_EOS);
91 if (status != MMAL_SUCCESS)
92 {
93 LOG_ERROR("event not available for port %s %p, result %d", port->name, port, status);
94 return status;
95 }
96
97 buffer->length = sizeof(*event);
98 event = (MMAL_EVENT_END_OF_STREAM_T *)buffer->data;
99 event->port_type = port->type;
100 event->port_index = port->index;
101 mmal_port_event_send(port->component->control, buffer);
102
103 return MMAL_SUCCESS;
104}
105
106MMAL_STATUS_T mmal_event_forward(MMAL_BUFFER_HEADER_T *event, MMAL_PORT_T *port)
107{
108 MMAL_BUFFER_HEADER_T *buffer;
109 MMAL_STATUS_T status;
110
111 if(!port || port->type != MMAL_PORT_TYPE_OUTPUT)
112 {
113 LOG_ERROR("invalid port");
114 return MMAL_EINVAL;
115 }
116
117 status = mmal_port_event_get(port->component->control, &buffer, event->cmd);
118 if (status != MMAL_SUCCESS)
119 {
120 LOG_ERROR("event not available for port %s %p, result %d", port->name, port, status);
121 return status;
122 }
123
124 if (buffer->alloc_size < event->length)
125 {
126 LOG_ERROR("event buffer too small (%i/%i)", buffer->alloc_size, event->length);
127 mmal_buffer_header_release(buffer);
128 return MMAL_ENOSPC;
129 }
130
131 memcpy(buffer->data, event->data, event->length);
132 buffer->length = event->length;
133 buffer->offset = event->offset;
134 buffer->flags = event->flags;
135 buffer->pts = event->pts;
136 mmal_port_event_send(port->component->control, buffer);
137 return MMAL_SUCCESS;
138}
139