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/* pcm_out_test.c
**
** Copyright 2020, The Android Open Source Project
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of The Android Open Source Project nor the names of
** its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
** DAMAGE.
*/
#include <cstdio>
#include <fstream>
#include <iostream>
#include <memory>
#include <string_view>
#include <string>
#include <thread>
#include <gtest/gtest.h>
#include "tinyalsa/pcm.h"
#include "pcm_test_device.h"
namespace tinyalsa {
namespace testing {
TEST(PcmTest, FormatToBits) {
// FIXME: Should we return 16 bits for INVALID?
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_INVALID), 16);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S16_LE), 16);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S32_LE), 32);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S8), 8);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S24_LE), 32);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S24_3LE), 24);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S16_BE), 16);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S24_BE), 32);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S24_3BE), 24);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_S32_BE), 32);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_FLOAT_LE), 32);
ASSERT_EQ(pcm_format_to_bits(PCM_FORMAT_FLOAT_BE), 32);
}
TEST(PcmTest, OpenAndCloseOutPcm) {
pcm *pcm_object = pcm_open(1000, 1000, PCM_OUT, &kDefaultConfig);
ASSERT_FALSE(pcm_is_ready(pcm_object));
ASSERT_EQ(pcm_close(pcm_object), 0);
// assume card 0, device 0 is always available
pcm_object = pcm_open(0, 0, PCM_OUT, &kDefaultConfig);
ASSERT_TRUE(pcm_is_ready(pcm_object));
ASSERT_EQ(pcm_close(pcm_object), 0);
pcm_object = pcm_open(0, 0, PCM_OUT | PCM_MMAP, &kDefaultConfig);
ASSERT_TRUE(pcm_is_ready(pcm_object));
ASSERT_EQ(pcm_close(pcm_object), 0);
pcm_object = pcm_open(0, 0, PCM_OUT | PCM_MMAP | PCM_NOIRQ, &kDefaultConfig);
ASSERT_TRUE(pcm_is_ready(pcm_object));
ASSERT_EQ(pcm_close(pcm_object), 0);
pcm_object = pcm_open(0, 0, PCM_OUT | PCM_NONBLOCK, &kDefaultConfig);
ASSERT_TRUE(pcm_is_ready(pcm_object));
ASSERT_EQ(pcm_close(pcm_object), 0);
pcm_object = pcm_open(0, 0, PCM_OUT | PCM_MONOTONIC, &kDefaultConfig);
ASSERT_TRUE(pcm_is_ready(pcm_object));
ASSERT_EQ(pcm_close(pcm_object), 0);
std::string name = "hw:0,0";
pcm_object = pcm_open_by_name(name.c_str(), PCM_OUT, &kDefaultConfig);
ASSERT_TRUE(pcm_is_ready(pcm_object));
ASSERT_EQ(pcm_close(pcm_object), 0);
}
TEST(PcmTest, OpenWithoutBlocking) {
char loopback_device_info_path[120] = {};
snprintf(loopback_device_info_path, sizeof(loopback_device_info_path),
"/proc/asound/card%d/pcm%dp/info", kLoopbackCard, kLoopbackPlaybackDevice);
std::ifstream info_file_stream{loopback_device_info_path};
if (!info_file_stream.is_open()) {
GTEST_SKIP();
}
char buffer[256] = {};
int32_t subdevice_count = 0;
while (info_file_stream.good()) {
info_file_stream.getline(buffer, sizeof(buffer));
std::cout << buffer << std::endl;
std::string_view line{buffer};
if (line.find("subdevices_count") != std::string_view::npos) {
auto subdevice_count_string = line.substr(line.find(":") + 1);
std::cout << subdevice_count_string << std::endl;
subdevice_count = std::stoi(std::string{subdevice_count_string});
}
}
ASSERT_GT(subdevice_count, 0);
auto pcm_array = std::make_unique<pcm *[]>(subdevice_count);
std::thread *open_thread = new std::thread{[&pcm_array, subdevice_count] {
// Occupy all substreams
for (int32_t i = 0; i < subdevice_count; i++) {
pcm_array[i] = pcm_open(kLoopbackCard, kLoopbackPlaybackDevice, PCM_OUT,
&kDefaultConfig);
EXPECT_TRUE(pcm_is_ready(pcm_array[i]));
}
// Expect that pcm_open is not blocked in the kernel and return a bad_object pointer.
pcm *pcm_object = pcm_open(kLoopbackCard, kLoopbackPlaybackDevice, PCM_OUT,
&kDefaultConfig);
if (pcm_is_ready(pcm_object)) {
// open_thread is blocked in kernel because of the substream is all occupied. pcm_open
// returns because the main thread has released all pcm structures in pcm_array. We just
// need to close the pcm_object here.
pcm_close(pcm_object);
return;
}
// Release all substreams
for (int32_t i = 0; i < subdevice_count; i++) {
pcm_close(pcm_array[i]);
pcm_array[i] = nullptr;
}
}};
static constexpr int64_t kTimeoutMs = 500;
std::this_thread::sleep_for(std::chrono::milliseconds(kTimeoutMs));
if (pcm_array[0] == nullptr) {
open_thread->join();
} else {
for (int32_t i = 0; i < subdevice_count; i++) {
pcm_close(pcm_array[i]);
pcm_array[i] = nullptr;
}
open_thread->join();
FAIL() << "The open_thread is blocked in kernel or the kTimeoutMs(" << kTimeoutMs <<
") is too short to complete";
}
}
} // namespace testing
} // namespace tinyalsa
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