1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* Copyright (C) 2007-2009 Nokia Corporation.
*
* Author: Felipe Contreras <felipe.contreras@nokia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "gstomx_adpcmenc.h"
#include "gstomx_base_filter.h"
#include "gstomx.h"
#include <string.h> /* for memset */
GSTOMX_BOILERPLATE (GstOmxAdpcmEnc, gst_omx_adpcmenc, GstOmxBaseFilter, GST_OMX_BASE_FILTER_TYPE);
static GstCaps *
generate_src_template (void)
{
GstCaps *caps;
caps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, "dvi",
"rate", GST_TYPE_INT_RANGE, 8000, 96000,
"channels", G_TYPE_INT, 1,
NULL);
return caps;
}
static GstCaps *
generate_sink_template (void)
{
GstCaps *caps;
caps = gst_caps_new_simple ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"width", G_TYPE_INT, 16,
"depth", G_TYPE_INT, 16,
"rate", GST_TYPE_INT_RANGE, 8000, 96000,
"signed", G_TYPE_BOOLEAN, TRUE,
"channels", G_TYPE_INT, 1,
NULL);
return caps;
}
static void
type_base_init (gpointer g_class)
{
GstElementClass *element_class;
element_class = GST_ELEMENT_CLASS (g_class);
{
GstElementDetails details;
details.longname = "OpenMAX IL ADPCM audio encoder";
details.klass = "Codec/Encoder/Audio";
details.description = "Encodes audio in ADPCM format with OpenMAX IL";
details.author = "Felipe Contreras";
gst_element_class_set_details (element_class, &details);
}
{
GstPadTemplate *template;
template = gst_pad_template_new ("src", GST_PAD_SRC,
GST_PAD_ALWAYS,
generate_src_template ());
gst_element_class_add_pad_template (element_class, template);
}
{
GstPadTemplate *template;
template = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS,
generate_sink_template ());
gst_element_class_add_pad_template (element_class, template);
}
}
static void
type_class_init (gpointer g_class,
gpointer class_data)
{
}
static void
settings_changed_cb (GOmxCore *core)
{
GstOmxBaseFilter *omx_base;
guint rate;
omx_base = core->object;
GST_DEBUG_OBJECT (omx_base, "settings changed");
{
OMX_AUDIO_PARAM_ADPCMTYPE param;
memset (¶m, 0, sizeof (param));
param.nSize = sizeof (OMX_AUDIO_PARAM_ADPCMTYPE);
param.nVersion.s.nVersionMajor = 1;
param.nVersion.s.nVersionMinor = 1;
param.nPortIndex = 1;
OMX_GetParameter (omx_base->gomx->omx_handle, OMX_IndexParamAudioAdpcm, ¶m);
rate = param.nSampleRate;
}
{
GstCaps *new_caps;
new_caps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, "dvi",
"rate", G_TYPE_INT, rate,
"channels", G_TYPE_INT, 1,
NULL);
GST_INFO_OBJECT (omx_base, "caps are: %" GST_PTR_FORMAT, new_caps);
gst_pad_set_caps (omx_base->srcpad, new_caps);
}
}
static gboolean
sink_setcaps (GstPad *pad,
GstCaps *caps)
{
GstCaps *peer_caps;
GstStructure *structure;
GstOmxBaseFilter *omx_base;
GOmxCore *gomx;
gint rate = 0;
gboolean ret = TRUE;
omx_base = GST_OMX_BASE_FILTER (GST_PAD_PARENT (pad));
gomx = (GOmxCore *) omx_base->gomx;
GST_INFO_OBJECT (omx_base, "setcaps (sink): %" GST_PTR_FORMAT, caps);
peer_caps = gst_pad_peer_get_caps (omx_base->srcpad);
g_return_val_if_fail (peer_caps, FALSE);
GST_INFO_OBJECT (omx_base, "setcaps (sink): peercaps: %" GST_PTR_FORMAT, peer_caps);
if (gst_caps_get_size (peer_caps) >= 1)
{
structure = gst_caps_get_structure (peer_caps, 0);
gst_structure_get_int (structure, "rate", &rate);
}
else
{
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "rate", &rate);
}
/* Input port configuration. */
{
OMX_AUDIO_PARAM_PCMMODETYPE param;
memset (¶m, 0, sizeof (param));
param.nSize = sizeof (OMX_AUDIO_PARAM_PCMMODETYPE);
param.nVersion.s.nVersionMajor = 1;
param.nVersion.s.nVersionMinor = 1;
param.nPortIndex = 0;
OMX_GetParameter (gomx->omx_handle, OMX_IndexParamAudioPcm, ¶m);
param.nSamplingRate = rate;
OMX_SetParameter (gomx->omx_handle, OMX_IndexParamAudioPcm, ¶m);
}
/* set caps on the srcpad */
{
GstCaps *tmp_caps;
GstStructure *tmp_structure;
tmp_caps = gst_pad_get_allowed_caps (omx_base->srcpad);
tmp_caps = gst_caps_make_writable (tmp_caps);
gst_caps_truncate (tmp_caps);
tmp_structure = gst_caps_get_structure (tmp_caps, 0);
gst_structure_fixate_field_nearest_int (tmp_structure, "rate", rate);
gst_pad_fixate_caps (omx_base->srcpad, tmp_caps);
if (gst_caps_is_fixed (tmp_caps))
{
GST_INFO_OBJECT (omx_base, "fixated to: %" GST_PTR_FORMAT, tmp_caps);
gst_pad_set_caps (omx_base->srcpad, tmp_caps);
}
gst_caps_unref (tmp_caps);
}
ret = gst_pad_set_caps (pad, caps);
gst_caps_unref (peer_caps);
return ret;
}
static void
type_instance_init (GTypeInstance *instance,
gpointer g_class)
{
GstOmxBaseFilter *omx_base;
omx_base = GST_OMX_BASE_FILTER (instance);
omx_base->gomx->settings_changed_cb = settings_changed_cb;
gst_pad_set_setcaps_function (omx_base->sinkpad, sink_setcaps);
}
|
