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/*
* Copyright © 2016 Mozilla Foundation
*
* This program is made available under an ISC-style license. See the
* accompanying file LICENSE for details.
*/
/* libcubeb api/function test. Loops input back to output and check audio
* is flowing. */
#include "gtest/gtest.h"
#if !defined(_XOPEN_SOURCE)
#define _XOPEN_SOURCE 600
#endif
#include "cubeb/cubeb.h"
#include <atomic>
#include <math.h>
#include <memory>
#include <stdio.h>
#include <stdlib.h>
// #define ENABLE_NORMAL_LOG
// #define ENABLE_VERBOSE_LOG
#include "common.h"
#define SAMPLE_FREQUENCY 48000
#define STREAM_FORMAT CUBEB_SAMPLE_FLOAT32LE
#define INPUT_CHANNELS 1
#define INPUT_LAYOUT CUBEB_LAYOUT_MONO
#define OUTPUT_CHANNELS 2
#define OUTPUT_LAYOUT CUBEB_LAYOUT_STEREO
struct user_state_duplex {
std::atomic<int> invalid_audio_value{0};
};
long
data_cb_duplex(cubeb_stream * stream, void * user, const void * inputbuffer,
void * outputbuffer, long nframes)
{
user_state_duplex * u = reinterpret_cast<user_state_duplex *>(user);
float * ib = (float *)inputbuffer;
float * ob = (float *)outputbuffer;
if (stream == NULL || inputbuffer == NULL || outputbuffer == NULL) {
return CUBEB_ERROR;
}
// Loop back: upmix the single input channel to the two output channels,
// checking if there is noise in the process.
long output_index = 0;
for (long i = 0; i < nframes; i++) {
if (ib[i] <= -1.0 || ib[i] >= 1.0) {
u->invalid_audio_value = 1;
}
ob[output_index] = ob[output_index + 1] = ib[i];
output_index += 2;
}
return nframes;
}
void
state_cb_duplex(cubeb_stream * stream, void * /*user*/, cubeb_state state)
{
if (stream == NULL)
return;
switch (state) {
case CUBEB_STATE_STARTED:
fprintf(stderr, "stream started\n");
break;
case CUBEB_STATE_STOPPED:
fprintf(stderr, "stream stopped\n");
break;
case CUBEB_STATE_DRAINED:
fprintf(stderr, "stream drained\n");
break;
default:
fprintf(stderr, "unknown stream state %d\n", state);
}
return;
}
TEST(cubeb, duplex)
{
cubeb * ctx;
cubeb_stream * stream;
cubeb_stream_params input_params;
cubeb_stream_params output_params;
int r;
user_state_duplex stream_state;
uint32_t latency_frames = 0;
r = common_init(&ctx, "Cubeb duplex example");
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
ctx, cubeb_destroy);
/* This test needs an available input device, skip it if this host does not
* have one. */
if (!can_run_audio_input_test(ctx)) {
return;
}
/* typical user-case: mono input, stereo output, low latency. */
input_params.format = STREAM_FORMAT;
input_params.rate = SAMPLE_FREQUENCY;
input_params.channels = INPUT_CHANNELS;
input_params.layout = INPUT_LAYOUT;
input_params.prefs = CUBEB_STREAM_PREF_NONE;
output_params.format = STREAM_FORMAT;
output_params.rate = SAMPLE_FREQUENCY;
output_params.channels = OUTPUT_CHANNELS;
output_params.layout = OUTPUT_LAYOUT;
output_params.prefs = CUBEB_STREAM_PREF_NONE;
r = cubeb_get_min_latency(ctx, &output_params, &latency_frames);
ASSERT_EQ(r, CUBEB_OK) << "Could not get minimal latency";
r = cubeb_stream_init(ctx, &stream, "Cubeb duplex", NULL, &input_params, NULL,
&output_params, latency_frames, data_cb_duplex,
state_cb_duplex, &stream_state);
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb stream";
std::unique_ptr<cubeb_stream, decltype(&cubeb_stream_destroy)>
cleanup_stream_at_exit(stream, cubeb_stream_destroy);
cubeb_stream_start(stream);
delay(500);
cubeb_stream_stop(stream);
ASSERT_FALSE(stream_state.invalid_audio_value.load());
}
void
device_collection_changed_callback(cubeb * context, void * user)
{
fprintf(stderr, "collection changed callback\n");
ASSERT_TRUE(false) << "Error: device collection changed callback"
" called when opening a stream";
}
void
duplex_collection_change_impl(cubeb * ctx)
{
cubeb_stream * stream;
cubeb_stream_params input_params;
cubeb_stream_params output_params;
int r;
uint32_t latency_frames = 0;
r = cubeb_register_device_collection_changed(
ctx, static_cast<cubeb_device_type>(CUBEB_DEVICE_TYPE_INPUT),
device_collection_changed_callback, nullptr);
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb stream";
/* typical user-case: mono input, stereo output, low latency. */
input_params.format = STREAM_FORMAT;
input_params.rate = SAMPLE_FREQUENCY;
input_params.channels = INPUT_CHANNELS;
input_params.layout = INPUT_LAYOUT;
input_params.prefs = CUBEB_STREAM_PREF_NONE;
output_params.format = STREAM_FORMAT;
output_params.rate = SAMPLE_FREQUENCY;
output_params.channels = OUTPUT_CHANNELS;
output_params.layout = OUTPUT_LAYOUT;
output_params.prefs = CUBEB_STREAM_PREF_NONE;
r = cubeb_get_min_latency(ctx, &output_params, &latency_frames);
ASSERT_EQ(r, CUBEB_OK) << "Could not get minimal latency";
r = cubeb_stream_init(ctx, &stream, "Cubeb duplex", NULL, &input_params, NULL,
&output_params, latency_frames, data_cb_duplex,
state_cb_duplex, nullptr);
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb stream";
cubeb_stream_destroy(stream);
}
TEST(cubeb, duplex_collection_change)
{
cubeb * ctx;
int r;
r = common_init(&ctx, "Cubeb duplex example with collection change");
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
ctx, cubeb_destroy);
/* This test needs an available input device, skip it if this host does not
* have one. */
if (!can_run_audio_input_test(ctx)) {
return;
}
duplex_collection_change_impl(ctx);
r = cubeb_register_device_collection_changed(
ctx, static_cast<cubeb_device_type>(CUBEB_DEVICE_TYPE_INPUT), nullptr,
nullptr);
ASSERT_EQ(r, CUBEB_OK);
}
TEST(cubeb, duplex_collection_change_no_unregister)
{
cubeb * ctx;
int r;
r = common_init(&ctx, "Cubeb duplex example with collection change");
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
/* This test needs an available input device, skip it if this host does not
* have one. */
if (!can_run_audio_input_test(ctx)) {
cubeb_destroy(ctx);
return;
}
std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
ctx, [](cubeb * p) noexcept { EXPECT_DEATH(cubeb_destroy(p), ""); });
duplex_collection_change_impl(ctx);
}
long
data_cb_input(cubeb_stream * stream, void * user, const void * inputbuffer,
void * outputbuffer, long nframes)
{
if (stream == NULL || inputbuffer == NULL || outputbuffer != NULL) {
return CUBEB_ERROR;
}
return nframes;
}
void
state_cb_input(cubeb_stream * stream, void * /*user*/, cubeb_state state)
{
if (stream == NULL)
return;
switch (state) {
case CUBEB_STATE_STARTED:
fprintf(stderr, "stream started\n");
break;
case CUBEB_STATE_STOPPED:
fprintf(stderr, "stream stopped\n");
break;
case CUBEB_STATE_DRAINED:
fprintf(stderr, "stream drained\n");
break;
case CUBEB_STATE_ERROR:
fprintf(stderr, "stream runs into error state\n");
break;
default:
fprintf(stderr, "unknown stream state %d\n", state);
}
return;
}
std::vector<cubeb_devid>
get_devices(cubeb * ctx, cubeb_device_type type)
{
std::vector<cubeb_devid> devices;
cubeb_device_collection collection;
int r = cubeb_enumerate_devices(ctx, type, &collection);
if (r != CUBEB_OK) {
fprintf(stderr, "Failed to enumerate devices\n");
return devices;
}
for (uint32_t i = 0; i < collection.count; i++) {
if (collection.device[i].state == CUBEB_DEVICE_STATE_ENABLED) {
devices.emplace_back(collection.device[i].devid);
}
}
cubeb_device_collection_destroy(ctx, &collection);
return devices;
}
TEST(cubeb, one_duplex_one_input)
{
cubeb * ctx;
cubeb_stream * duplex_stream;
cubeb_stream_params input_params;
cubeb_stream_params output_params;
int r;
user_state_duplex duplex_stream_state;
uint32_t latency_frames = 0;
r = common_init(&ctx, "Cubeb duplex example");
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
ctx, cubeb_destroy);
/* This test needs at least two available input devices. */
std::vector<cubeb_devid> input_devices =
get_devices(ctx, CUBEB_DEVICE_TYPE_INPUT);
if (input_devices.size() < 2) {
return;
}
/* This test needs at least one available output device. */
std::vector<cubeb_devid> output_devices =
get_devices(ctx, CUBEB_DEVICE_TYPE_OUTPUT);
if (output_devices.size() < 1) {
return;
}
cubeb_devid duplex_input = input_devices.front();
cubeb_devid duplex_output = nullptr; // default device
cubeb_devid input_only = input_devices.back();
/* typical use-case: mono voice input, stereo output, low latency. */
input_params.format = STREAM_FORMAT;
input_params.rate = SAMPLE_FREQUENCY;
input_params.channels = INPUT_CHANNELS;
input_params.layout = CUBEB_LAYOUT_UNDEFINED;
input_params.prefs = CUBEB_STREAM_PREF_VOICE;
output_params.format = STREAM_FORMAT;
output_params.rate = SAMPLE_FREQUENCY;
output_params.channels = OUTPUT_CHANNELS;
output_params.layout = OUTPUT_LAYOUT;
output_params.prefs = CUBEB_STREAM_PREF_NONE;
r = cubeb_get_min_latency(ctx, &output_params, &latency_frames);
ASSERT_EQ(r, CUBEB_OK) << "Could not get minimal latency";
r = cubeb_stream_init(ctx, &duplex_stream, "Cubeb duplex", duplex_input,
&input_params, duplex_output, &output_params,
latency_frames, data_cb_duplex, state_cb_duplex,
&duplex_stream_state);
ASSERT_EQ(r, CUBEB_OK) << "Error initializing duplex cubeb stream";
std::unique_ptr<cubeb_stream, decltype(&cubeb_stream_destroy)>
cleanup_stream_at_exit(duplex_stream, cubeb_stream_destroy);
r = cubeb_stream_start(duplex_stream);
ASSERT_EQ(r, CUBEB_OK) << "Could not start duplex stream";
delay(500);
cubeb_stream * input_stream;
r = cubeb_stream_init(ctx, &input_stream, "Cubeb input", input_only,
&input_params, NULL, NULL, latency_frames,
data_cb_input, state_cb_input, nullptr);
ASSERT_EQ(r, CUBEB_OK) << "Error initializing input-only cubeb stream";
std::unique_ptr<cubeb_stream, decltype(&cubeb_stream_destroy)>
cleanup_input_stream_at_exit(input_stream, cubeb_stream_destroy);
r = cubeb_stream_start(input_stream);
ASSERT_EQ(r, CUBEB_OK) << "Could not start input stream";
delay(500);
r = cubeb_stream_stop(duplex_stream);
ASSERT_EQ(r, CUBEB_OK) << "Could not stop duplex stream";
r = cubeb_stream_stop(input_stream);
ASSERT_EQ(r, CUBEB_OK) << "Could not stop input stream";
ASSERT_FALSE(duplex_stream_state.invalid_audio_value.load());
}
#undef SAMPLE_FREQUENCY
#undef STREAM_FORMAT
#undef INPUT_CHANNELS
#undef INPUT_LAYOUT
#undef OUTPUT_CHANNELS
#undef OUTPUT_LAYOUT