161 lines
3.8 KiB
C++
161 lines
3.8 KiB
C++
/*
|
|
* \brief Audio-out test implementation
|
|
* \author Sebastian Sumpf
|
|
* \author Christian Helmuth
|
|
* \date 2009-12-03
|
|
*
|
|
* The test program plays several tracks simultaneously to the Audio_out
|
|
* service. See README for the configuration.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2009-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#include <audio_out_session/connection.h>
|
|
#include <base/printf.h>
|
|
#include <base/sleep.h>
|
|
#include <dataspace/client.h>
|
|
#include <input_session/connection.h>
|
|
#include <input/event.h>
|
|
#include <os/config.h>
|
|
#include <rom_session/connection.h>
|
|
|
|
|
|
using namespace Genode;
|
|
using namespace Audio_out;
|
|
|
|
static const bool verbose = false;
|
|
|
|
enum {
|
|
CHANNELS = 2, /* number of channels */
|
|
FRAME_SIZE = sizeof(float),
|
|
PERIOD_CSIZE = FRAME_SIZE * PERIOD, /* size of channel packet (bytes) */
|
|
PERIOD_FSIZE = CHANNELS * PERIOD_CSIZE, /* size of period in file (bytes) */
|
|
};
|
|
|
|
|
|
static const char *channel_names[] = { "front left", "front right" };
|
|
|
|
|
|
class Click
|
|
{
|
|
private:
|
|
|
|
Audio_out::Connection *_audio_out[CHANNELS];
|
|
char const *_base;
|
|
Genode::size_t _size;
|
|
|
|
public:
|
|
|
|
Click(char const *file)
|
|
{
|
|
for (int i = 0; i < CHANNELS; ++i) {
|
|
/* allocation signal for first channel only */
|
|
_audio_out[i] = new (env()->heap())
|
|
Audio_out::Connection(channel_names[i], i == 0);
|
|
_audio_out[i]->start();
|
|
}
|
|
|
|
Dataspace_capability ds_cap;
|
|
|
|
try {
|
|
Rom_connection rom(file);
|
|
rom.on_destruction(Rom_connection::KEEP_OPEN);
|
|
ds_cap = rom.dataspace();
|
|
_base = env()->rm_session()->attach(ds_cap);
|
|
} catch (...) {
|
|
PDBG("Error: Could not open: %s", file);
|
|
return;
|
|
}
|
|
|
|
Dataspace_client ds_client(ds_cap);
|
|
_size = ds_client.size();
|
|
}
|
|
|
|
void play()
|
|
{
|
|
PLOG("play click");
|
|
|
|
for (int i = 0; i < CHANNELS; i++)
|
|
_audio_out[i]->stream()->reset();
|
|
|
|
for (Genode::size_t offset = 0; offset < _size; offset += PERIOD_FSIZE) {
|
|
|
|
/*
|
|
* The current chunk (in number of frames of one channel)
|
|
* is the size of the period except at the end of the
|
|
* file.
|
|
*/
|
|
size_t chunk = (offset + PERIOD_FSIZE > _size)
|
|
? (_size - offset) / CHANNELS / FRAME_SIZE
|
|
: PERIOD;
|
|
|
|
Packet *p[CHANNELS];
|
|
|
|
while (true)
|
|
try {
|
|
p[0] = _audio_out[0]->stream()->alloc();
|
|
break;
|
|
} catch (Audio_out::Stream::Alloc_failed) {
|
|
_audio_out[0]->wait_for_alloc();
|
|
}
|
|
|
|
unsigned pos = _audio_out[0]->stream()->packet_position(p[0]);
|
|
for (int chn = 1; chn < CHANNELS; ++chn)
|
|
p[chn] = _audio_out[chn]->stream()->get(pos);
|
|
|
|
/* copy channel contents into sessions */
|
|
float *content = (float *)(_base + offset);
|
|
for (unsigned c = 0; c < CHANNELS * chunk; c += CHANNELS)
|
|
for (int i = 0; i < CHANNELS; ++i)
|
|
p[i]->content()[c / 2] = content[c + i];
|
|
|
|
/* handle last packet gracefully */
|
|
if (chunk < PERIOD) {
|
|
for (int i = 0; i < CHANNELS; ++i)
|
|
memset(p[i]->content() + chunk,
|
|
0, PERIOD_CSIZE - FRAME_SIZE * chunk);
|
|
}
|
|
|
|
for (int i = 0; i < CHANNELS; i++)
|
|
_audio_out[i]->submit(p[i]);
|
|
}
|
|
}
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
PDBG("--- Audio_out click test ---\n");
|
|
|
|
Genode::Signal_context sig_ctx;
|
|
Genode::Signal_receiver sig_rec;
|
|
|
|
Genode::Signal_context_capability sig_cap = sig_rec.manage(&sig_ctx);
|
|
|
|
Input::Connection input;
|
|
Input::Event *ev_buf;
|
|
|
|
input.sigh(sig_cap);
|
|
ev_buf = static_cast<Input::Event *>(Genode::env()->rm_session()->attach(input.dataspace()));
|
|
|
|
Click click("click.raw");
|
|
|
|
for (;;) {
|
|
Genode::Signal sig = sig_rec.wait_for_signal();
|
|
|
|
for (int i = 0, num_ev = input.flush(); i < num_ev; ++i) {
|
|
Input::Event &ev = ev_buf[i];
|
|
if (ev.type() == Input::Event::PRESS) {
|
|
click.play();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|