121 lines
3.1 KiB
C++
Executable file
121 lines
3.1 KiB
C++
Executable file
/*
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* Copyright © 2011 Mozilla Foundation
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*
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* This program is made available under an ISC-style license. See the
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* accompanying file LICENSE for details.
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*/
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/* libcubeb api/function test. Plays a simple tone. */
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#include "gtest/gtest.h"
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#if !defined(_XOPEN_SOURCE)
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#define _XOPEN_SOURCE 600
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <memory>
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#include <limits.h>
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#include "cubeb/cubeb.h"
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#include <atomic>
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//#define ENABLE_NORMAL_LOG
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//#define ENABLE_VERBOSE_LOG
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#include "common.h"
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#define SAMPLE_FREQUENCY 48000
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#define STREAM_FORMAT CUBEB_SAMPLE_S16LE
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/* store the phase of the generated waveform */
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struct cb_user_data {
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std::atomic<long> position;
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};
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long data_cb_tone(cubeb_stream *stream, void *user, const void* /*inputbuffer*/, void *outputbuffer, long nframes)
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{
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struct cb_user_data *u = (struct cb_user_data *)user;
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short *b = (short *)outputbuffer;
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float t1, t2;
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int i;
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if (stream == NULL || u == NULL)
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return CUBEB_ERROR;
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/* generate our test tone on the fly */
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for (i = 0; i < nframes; i++) {
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/* North American dial tone */
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t1 = sin(2*M_PI*(i + u->position)*350/SAMPLE_FREQUENCY);
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t2 = sin(2*M_PI*(i + u->position)*440/SAMPLE_FREQUENCY);
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b[i] = (SHRT_MAX / 2) * t1;
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b[i] += (SHRT_MAX / 2) * t2;
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/* European dial tone */
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/*
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t1 = sin(2*M_PI*(i + u->position)*425/SAMPLE_FREQUENCY);
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b[i] = SHRT_MAX * t1;
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*/
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}
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/* remember our phase to avoid clicking on buffer transitions */
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/* we'll still click if position overflows */
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u->position += nframes;
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return nframes;
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}
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void state_cb_tone(cubeb_stream *stream, void *user, cubeb_state state)
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{
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struct cb_user_data *u = (struct cb_user_data *)user;
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if (stream == NULL || u == NULL)
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return;
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switch (state) {
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case CUBEB_STATE_STARTED:
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fprintf(stderr, "stream started\n"); break;
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case CUBEB_STATE_STOPPED:
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fprintf(stderr, "stream stopped\n"); break;
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case CUBEB_STATE_DRAINED:
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fprintf(stderr, "stream drained\n"); break;
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default:
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fprintf(stderr, "unknown stream state %d\n", state);
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}
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return;
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}
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TEST(cubeb, tone)
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{
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cubeb *ctx;
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cubeb_stream *stream;
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cubeb_stream_params params;
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int r;
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r = common_init(&ctx, "Cubeb tone example");
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ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
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std::unique_ptr<cubeb, decltype(&cubeb_destroy)>
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cleanup_cubeb_at_exit(ctx, cubeb_destroy);
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params.format = STREAM_FORMAT;
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params.rate = SAMPLE_FREQUENCY;
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params.channels = 1;
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params.layout = CUBEB_LAYOUT_MONO;
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params.prefs = CUBEB_STREAM_PREF_NONE;
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std::unique_ptr<cb_user_data> user_data(new cb_user_data());
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ASSERT_TRUE(!!user_data) << "Error allocating user data";
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user_data->position = 0;
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r = cubeb_stream_init(ctx, &stream, "Cubeb tone (mono)", NULL, NULL, NULL, ¶ms,
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4096, data_cb_tone, state_cb_tone, user_data.get());
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ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb stream";
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std::unique_ptr<cubeb_stream, decltype(&cubeb_stream_destroy)>
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cleanup_stream_at_exit(stream, cubeb_stream_destroy);
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cubeb_stream_start(stream);
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delay(5000);
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cubeb_stream_stop(stream);
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ASSERT_TRUE(user_data->position.load());
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}
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