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
|
// subtitleeditor -- a tool to create or edit subtitle
//
// https://subtitleeditor.github.io/subtitleeditor/
// https://github.com/subtitleeditor/subtitleeditor/
//
// Copyright @ 2005-2018, kitone
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <gtkmm.h>
#include <utility.h>
#include <waveform.h>
#include <iomanip>
#include <iostream>
#include "mediadecoder.h"
class WaveformGenerator : public Gtk::Dialog, public MediaDecoder {
public:
WaveformGenerator(const Glib::ustring& uri, Glib::RefPtr<Waveform>& wf)
: Gtk::Dialog(_("Generate Waveform"), true), MediaDecoder(1000), m_duration(GST_CLOCK_TIME_NONE), m_n_channels(0) {
se_dbg_msg(SE_DBG_PLUGINS, "uri=%s", uri.c_str());
set_border_width(12);
set_default_size(300, -1);
get_vbox()->pack_start(m_progressbar, false, false);
add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
m_progressbar.set_show_text(true);
m_progressbar.set_text(_("Waiting..."));
show_all();
try {
create_pipeline(uri);
if (run() == Gtk::RESPONSE_OK) {
wf = Glib::RefPtr<Waveform>(new Waveform);
wf->m_duration = m_duration / GST_MSECOND;
wf->m_n_channels = m_n_channels;
for (guint i = 0; i < m_n_channels; ++i) {
wf->m_channels[i] = std::vector<double>(m_values[i].begin(), m_values[i].end());
}
wf->m_video_uri = uri;
}
} catch (const std::runtime_error& ex) {
std::cerr << ex.what() << std::endl;
}
}
// Create audio bin
GstElement* create_element(const Glib::ustring& structure_name) {
se_dbg_msg(SE_DBG_PLUGINS, "structure_name=%s", structure_name.c_str());
// We only need and want create the video sink
if (structure_name.find("audio") == Glib::ustring::npos)
return nullptr;
GError* error = nullptr;
GstElement* audiobin = gst_parse_bin_from_description("audioconvert ! level name=level ! fakesink name=asink", true, &error);
if (error) {
// FIXME: print error
g_clear_error(&error);
return nullptr;
}
// Set the new sink tp READY as well
GstStateChangeReturn retst = gst_element_set_state(audiobin, GST_STATE_READY);
if (retst == GST_STATE_CHANGE_FAILURE)
std::cerr << "Could not change state of new sink: " << retst << std::endl;
return audiobin;
}
// BUS MESSAGE
bool on_bus_message(GstBus* bus, GstMessage* msg) {
MediaDecoder::on_bus_message(bus, msg);
if (GST_MESSAGE_TYPE(msg) != GST_MESSAGE_ELEMENT)
return true;
const GstStructure* structure = gst_message_get_structure(msg);
Glib::ustring struct_name = gst_structure_get_name(structure);
// FIXME: check if ok
// if (msg->get_structure().get_name() == "level")
if (struct_name != "level")
return true;
return on_bus_message_element_level(msg);
}
// Update the progress bar
bool on_timeout() {
se_dbg(SE_DBG_PLUGINS);
if (!m_pipeline)
return false;
gint64 pos = 0, len = 0;
if (gst_element_query_position(m_pipeline, GST_FORMAT_TIME, &pos) && gst_element_query_duration(m_pipeline, GST_FORMAT_TIME, &len)) {
double percent = static_cast<double>(pos) / static_cast<double>(len);
percent = CLAMP(percent, 0.0, 1.0);
m_progressbar.set_fraction(percent);
m_progressbar.set_text(time_to_string(pos) + " / " + time_to_string(len));
return pos != len;
}
return true;
}
bool on_bus_message_element_level(GstMessage* msg) {
se_dbg_msg(SE_DBG_PLUGINS, "type='%s' name='%s'", GST_MESSAGE_TYPE_NAME(msg), GST_OBJECT_NAME(GST_MESSAGE_SRC(msg)));
const GstStructure* structure = gst_message_get_structure(msg);
const GValue* array_val = gst_structure_get_value(structure, "rms");
GValueArray* rms_arr = static_cast<GValueArray*>(g_value_get_boxed(array_val));
guint num_channels = rms_arr->n_values;
guint first_channel, last_channel;
if (num_channels >= 6) {
first_channel = 1;
last_channel = 3;
} else if (num_channels == 5) {
first_channel = 1;
last_channel = 2;
} else if (num_channels == 2) {
first_channel = 0;
last_channel = 1;
} else {
first_channel = last_channel = 0;
}
// build the number of channels
m_n_channels = last_channel - first_channel + 1;
// get peak from channels
for (guint c = first_channel, i = 0; c <= last_channel; ++c, ++i) {
double peak = pow(10, g_value_get_double(g_value_array_get_nth(rms_arr, c)) / 20);
m_values[i].push_back(peak);
}
return true;
}
void on_work_finished() {
se_dbg(SE_DBG_PLUGINS);
// set duration to position at eos
gint64 pos = 0;
if (m_pipeline && gst_element_query_position(m_pipeline, GST_FORMAT_TIME, &pos)) {
m_duration = pos;
response(Gtk::RESPONSE_OK);
} else {
GST_ELEMENT_ERROR(m_pipeline, STREAM, FAILED, (_("Could not determinate the duration of the stream.")), (NULL));
}
}
void on_work_cancel() {
se_dbg(SE_DBG_PLUGINS);
response(Gtk::RESPONSE_CANCEL);
}
protected:
Gtk::ProgressBar m_progressbar;
guint64 m_duration;
guint m_n_channels;
std::list<gdouble> m_values[3];
};
Glib::RefPtr<Waveform> generate_waveform_from_file(const Glib::ustring& uri) {
Glib::RefPtr<Waveform> wf;
WaveformGenerator ui(uri, wf);
return wf;
}
|
