/* * 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 <stdio.h> #include <stdlib.h> #include <math.h> #include <memory> #include "cubeb/cubeb.h" #include <atomic> //#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; break; } 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 (!has_available_input_device(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"; } TEST(cubeb, duplex_collection_change) { cubeb *ctx; cubeb_stream *stream; cubeb_stream_params input_params; cubeb_stream_params output_params; int r; uint32_t latency_frames = 0; r = common_init(&ctx, "Cubeb duplex example with collection change"); ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library"; 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"; std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(ctx, cubeb_destroy); /* 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); }