modules/audio_processing/test/android/apmtest/jni/main.c - src/webrtc - Git at Google

 /*
  * Copyright (C) 2010 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  */

 //BEGIN_INCLUDE(all)
 #include <jni.h>
 #include <errno.h>

 #include <EGL/egl.h>
 #include <GLES/gl.h>

 #include <android/sensor.h>
 #include <android/log.h>
 #include <android_native_app_glue.h>

 #define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "native-activity", __VA_ARGS__))
 #define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "native-activity", __VA_ARGS__))

 /**
  * Our saved state data.
  */
 struct saved_state {
     float angle;
     int32_t x;
     int32_t y;
 };

 /**
  * Shared state for our app.
  */
 struct engine {
     struct android_app* app;

     ASensorManager* sensorManager;
     const ASensor* accelerometerSensor;
     ASensorEventQueue* sensorEventQueue;

     int animating;
     EGLDisplay display;
     EGLSurface surface;
     EGLContext context;
     int32_t width;
     int32_t height;
     struct saved_state state;
 };

 /**
  * Initialize an EGL context for the current display.
  */
 static int engine_init_display(struct engine* engine) {
     // initialize OpenGL ES and EGL

     /*
      * Here specify the attributes of the desired configuration.
      * Below, we select an EGLConfig with at least 8 bits per color
      * component compatible with on-screen windows
      */
     const EGLint attribs[] = {
             EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
             EGL_BLUE_SIZE, 8,
             EGL_GREEN_SIZE, 8,
             EGL_RED_SIZE, 8,
             EGL_NONE
     };
     EGLint w, h, dummy, format;
     EGLint numConfigs;
     EGLConfig config;
     EGLSurface surface;
     EGLContext context;

     EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);

     eglInitialize(display, 0, 0);

     /* Here, the application chooses the configuration it desires. In this
      * sample, we have a very simplified selection process, where we pick
      * the first EGLConfig that matches our criteria */
     eglChooseConfig(display, attribs, &config, 1, &numConfigs);

     /* EGL_NATIVE_VISUAL_ID is an attribute of the EGLConfig that is
      * guaranteed to be accepted by ANativeWindow_setBuffersGeometry().
      * As soon as we picked a EGLConfig, we can safely reconfigure the
      * ANativeWindow buffers to match, using EGL_NATIVE_VISUAL_ID. */
     eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);

     ANativeWindow_setBuffersGeometry(engine->app->window, 0, 0, format);

     surface = eglCreateWindowSurface(display, config, engine->app->window, NULL);
     context = eglCreateContext(display, config, NULL, NULL);

     if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE) {
         LOGW("Unable to eglMakeCurrent");
         return -1;
     }

     eglQuerySurface(display, surface, EGL_WIDTH, &w);
     eglQuerySurface(display, surface, EGL_HEIGHT, &h);

     engine->display = display;
     engine->context = context;
     engine->surface = surface;
     engine->width = w;
     engine->height = h;
     engine->state.angle = 0;

     // Initialize GL state.
     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
     glEnable(GL_CULL_FACE);
     glShadeModel(GL_SMOOTH);
     glDisable(GL_DEPTH_TEST);

     return 0;
 }

 /**
  * Just the current frame in the display.
  */
 static void engine_draw_frame(struct engine* engine) {
     if (engine->display == NULL) {
         // No display.
         return;
     }

     // Just fill the screen with a color.
     glClearColor(((float)engine->state.x)/engine->width, engine->state.angle,
             ((float)engine->state.y)/engine->height, 1);
     glClear(GL_COLOR_BUFFER_BIT);

     eglSwapBuffers(engine->display, engine->surface);
 }

 /**
  * Tear down the EGL context currently associated with the display.
  */
 static void engine_term_display(struct engine* engine) {
     if (engine->display != EGL_NO_DISPLAY) {
         eglMakeCurrent(engine->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
         if (engine->context != EGL_NO_CONTEXT) {
             eglDestroyContext(engine->display, engine->context);
         }
         if (engine->surface != EGL_NO_SURFACE) {
             eglDestroySurface(engine->display, engine->surface);
         }
         eglTerminate(engine->display);
     }
     engine->animating = 0;
     engine->display = EGL_NO_DISPLAY;
     engine->context = EGL_NO_CONTEXT;
     engine->surface = EGL_NO_SURFACE;
 }

 /**
  * Process the next input event.
  */
 static int32_t engine_handle_input(struct android_app* app, AInputEvent* event) {
     struct engine* engine = (struct engine*)app->userData;
     if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_MOTION) {
         engine->animating = 1;
         engine->state.x = AMotionEvent_getX(event, 0);
         engine->state.y = AMotionEvent_getY(event, 0);
         return 1;
     }
     return 0;
 }

 /**
  * Process the next main command.
  */
 static void engine_handle_cmd(struct android_app* app, int32_t cmd) {
     struct engine* engine = (struct engine*)app->userData;
     switch (cmd) {
         case APP_CMD_SAVE_STATE:
             // The system has asked us to save our current state.  Do so.
             engine->app->savedState = malloc(sizeof(struct saved_state));
             *((struct saved_state*)engine->app->savedState) = engine->state;
             engine->app->savedStateSize = sizeof(struct saved_state);
             break;
         case APP_CMD_INIT_WINDOW:
             // The window is being shown, get it ready.
             if (engine->app->window != NULL) {
                 engine_init_display(engine);
                 engine_draw_frame(engine);
             }
             break;
         case APP_CMD_TERM_WINDOW:
             // The window is being hidden or closed, clean it up.
             engine_term_display(engine);
             break;
         case APP_CMD_GAINED_FOCUS:
             // When our app gains focus, we start monitoring the accelerometer.
             if (engine->accelerometerSensor != NULL) {
                 ASensorEventQueue_enableSensor(engine->sensorEventQueue,
                         engine->accelerometerSensor);
                 // We'd like to get 60 events per second (in us).
                 ASensorEventQueue_setEventRate(engine->sensorEventQueue,
                         engine->accelerometerSensor, (1000L/60)*1000);
             }
             break;
         case APP_CMD_LOST_FOCUS:
             // When our app loses focus, we stop monitoring the accelerometer.
             // This is to avoid consuming battery while not being used.
             if (engine->accelerometerSensor != NULL) {
                 ASensorEventQueue_disableSensor(engine->sensorEventQueue,
                         engine->accelerometerSensor);
             }
             // Also stop animating.
             engine->animating = 0;
             engine_draw_frame(engine);
             break;
     }
 }

 /**
  * This is the main entry point of a native application that is using
  * android_native_app_glue.  It runs in its own thread, with its own
  * event loop for receiving input events and doing other things.
  */
 void android_main(struct android_app* state) {
     struct engine engine;

     // Make sure glue isn't stripped.
     app_dummy();

     memset(&engine, 0, sizeof(engine));
     state->userData = &engine;
     state->onAppCmd = engine_handle_cmd;
     state->onInputEvent = engine_handle_input;
     engine.app = state;

     // Prepare to monitor accelerometer
     engine.sensorManager = ASensorManager_getInstance();
     engine.accelerometerSensor = ASensorManager_getDefaultSensor(engine.sensorManager,
             ASENSOR_TYPE_ACCELEROMETER);
     engine.sensorEventQueue = ASensorManager_createEventQueue(engine.sensorManager,
             state->looper, LOOPER_ID_USER, NULL, NULL);

     if (state->savedState != NULL) {
         // We are starting with a previous saved state; restore from it.
         engine.state = *(struct saved_state*)state->savedState;
     }

     // loop waiting for stuff to do.

     while (1) {
         // Read all pending events.
         int ident;
         int events;
         struct android_poll_source* source;

         // If not animating, we will block forever waiting for events.
         // If animating, we loop until all events are read, then continue
         // to draw the next frame of animation.
         while ((ident=ALooper_pollAll(engine.animating ? 0 : -1, NULL, &events,
                 (void**)&source)) >= 0) {

             // Process this event.
             if (source != NULL) {
                 source->process(state, source);
             }

             // If a sensor has data, process it now.
             if (ident == LOOPER_ID_USER) {
                 if (engine.accelerometerSensor != NULL) {
                     ASensorEvent event;
                     while (ASensorEventQueue_getEvents(engine.sensorEventQueue,
                             &event, 1) > 0) {
                         LOGI("accelerometer: x=%f y=%f z=%f",
                                 event.acceleration.x, event.acceleration.y,
                                 event.acceleration.z);
                     }
                 }
             }

             // Check if we are exiting.
             if (state->destroyRequested != 0) {
                 engine_term_display(&engine);
                 return;
             }
         }

         if (engine.animating) {
             // Done with events; draw next animation frame.
             engine.state.angle += .01f;
             if (engine.state.angle > 1) {
                 engine.state.angle = 0;
             }

             // Drawing is throttled to the screen update rate, so there
             // is no need to do timing here.
             engine_draw_frame(&engine);
         }
     }
 }
 //END_INCLUDE(all)
	/*
	* Copyright (C) 2010 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	*/

	//BEGIN_INCLUDE(all)
	#include <jni.h>
	#include <errno.h>

	#include <EGL/egl.h>
	#include <GLES/gl.h>

	#include <android/sensor.h>
	#include <android/log.h>
	#include <android_native_app_glue.h>

	#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "native-activity", __VA_ARGS__))
	#define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "native-activity", __VA_ARGS__))

	/**
	* Our saved state data.
	*/
	struct saved_state {
	float angle;
	int32_t x;
	int32_t y;
	};

	/**
	* Shared state for our app.
	*/
	struct engine {
	struct android_app* app;

	ASensorManager* sensorManager;
	const ASensor* accelerometerSensor;
	ASensorEventQueue* sensorEventQueue;

	int animating;
	EGLDisplay display;
	EGLSurface surface;
	EGLContext context;
	int32_t width;
	int32_t height;
	struct saved_state state;
	};

	/**
	* Initialize an EGL context for the current display.
	*/
	static int engine_init_display(struct engine* engine) {
	// initialize OpenGL ES and EGL

	/*
	* Here specify the attributes of the desired configuration.
	* Below, we select an EGLConfig with at least 8 bits per color
	* component compatible with on-screen windows
	*/
	const EGLint attribs[] = {
	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
	EGL_BLUE_SIZE, 8,
	EGL_GREEN_SIZE, 8,
	EGL_RED_SIZE, 8,
	EGL_NONE
	};
	EGLint w, h, dummy, format;
	EGLint numConfigs;
	EGLConfig config;
	EGLSurface surface;
	EGLContext context;

	EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);

	eglInitialize(display, 0, 0);

	/* Here, the application chooses the configuration it desires. In this
	* sample, we have a very simplified selection process, where we pick
	* the first EGLConfig that matches our criteria */
	eglChooseConfig(display, attribs, &config, 1, &numConfigs);

	/* EGL_NATIVE_VISUAL_ID is an attribute of the EGLConfig that is
	* guaranteed to be accepted by ANativeWindow_setBuffersGeometry().
	* As soon as we picked a EGLConfig, we can safely reconfigure the
	* ANativeWindow buffers to match, using EGL_NATIVE_VISUAL_ID. */
	eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);

	ANativeWindow_setBuffersGeometry(engine->app->window, 0, 0, format);

	surface = eglCreateWindowSurface(display, config, engine->app->window, NULL);
	context = eglCreateContext(display, config, NULL, NULL);

	if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE) {
	LOGW("Unable to eglMakeCurrent");
	return -1;
	}

	eglQuerySurface(display, surface, EGL_WIDTH, &w);
	eglQuerySurface(display, surface, EGL_HEIGHT, &h);

	engine->display = display;
	engine->context = context;
	engine->surface = surface;
	engine->width = w;
	engine->height = h;
	engine->state.angle = 0;

	// Initialize GL state.
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
	glEnable(GL_CULL_FACE);
	glShadeModel(GL_SMOOTH);
	glDisable(GL_DEPTH_TEST);

	return 0;
	}

	/**
	* Just the current frame in the display.
	*/
	static void engine_draw_frame(struct engine* engine) {
	if (engine->display == NULL) {
	// No display.
	return;
	}

	// Just fill the screen with a color.
	glClearColor(((float)engine->state.x)/engine->width, engine->state.angle,
	((float)engine->state.y)/engine->height, 1);
	glClear(GL_COLOR_BUFFER_BIT);

	eglSwapBuffers(engine->display, engine->surface);
	}

	/**
	* Tear down the EGL context currently associated with the display.
	*/
	static void engine_term_display(struct engine* engine) {
	if (engine->display != EGL_NO_DISPLAY) {
	eglMakeCurrent(engine->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
	if (engine->context != EGL_NO_CONTEXT) {
	eglDestroyContext(engine->display, engine->context);
	}
	if (engine->surface != EGL_NO_SURFACE) {
	eglDestroySurface(engine->display, engine->surface);
	}
	eglTerminate(engine->display);
	}
	engine->animating = 0;
	engine->display = EGL_NO_DISPLAY;
	engine->context = EGL_NO_CONTEXT;
	engine->surface = EGL_NO_SURFACE;
	}

	/**
	* Process the next input event.
	*/
	static int32_t engine_handle_input(struct android_app* app, AInputEvent* event) {
	struct engine* engine = (struct engine*)app->userData;
	if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_MOTION) {
	engine->animating = 1;
	engine->state.x = AMotionEvent_getX(event, 0);
	engine->state.y = AMotionEvent_getY(event, 0);
	return 1;
	}
	return 0;
	}

	/**
	* Process the next main command.
	*/
	static void engine_handle_cmd(struct android_app* app, int32_t cmd) {
	struct engine* engine = (struct engine*)app->userData;
	switch (cmd) {
	case APP_CMD_SAVE_STATE:
	// The system has asked us to save our current state. Do so.
	engine->app->savedState = malloc(sizeof(struct saved_state));
	((struct saved_state)engine->app->savedState) = engine->state;
	engine->app->savedStateSize = sizeof(struct saved_state);
	break;
	case APP_CMD_INIT_WINDOW:
	// The window is being shown, get it ready.
	if (engine->app->window != NULL) {
	engine_init_display(engine);
	engine_draw_frame(engine);
	}
	break;
	case APP_CMD_TERM_WINDOW:
	// The window is being hidden or closed, clean it up.
	engine_term_display(engine);
	break;
	case APP_CMD_GAINED_FOCUS:
	// When our app gains focus, we start monitoring the accelerometer.
	if (engine->accelerometerSensor != NULL) {
	ASensorEventQueue_enableSensor(engine->sensorEventQueue,
	engine->accelerometerSensor);
	// We'd like to get 60 events per second (in us).
	ASensorEventQueue_setEventRate(engine->sensorEventQueue,
	engine->accelerometerSensor, (1000L/60)*1000);
	}
	break;
	case APP_CMD_LOST_FOCUS:
	// When our app loses focus, we stop monitoring the accelerometer.
	// This is to avoid consuming battery while not being used.
	if (engine->accelerometerSensor != NULL) {
	ASensorEventQueue_disableSensor(engine->sensorEventQueue,
	engine->accelerometerSensor);
	}
	// Also stop animating.
	engine->animating = 0;
	engine_draw_frame(engine);
	break;
	}
	}

	/**
	* This is the main entry point of a native application that is using
	* android_native_app_glue. It runs in its own thread, with its own
	* event loop for receiving input events and doing other things.
	*/
	void android_main(struct android_app* state) {
	struct engine engine;

	// Make sure glue isn't stripped.
	app_dummy();

	memset(&engine, 0, sizeof(engine));
	state->userData = &engine;
	state->onAppCmd = engine_handle_cmd;
	state->onInputEvent = engine_handle_input;
	engine.app = state;

	// Prepare to monitor accelerometer
	engine.sensorManager = ASensorManager_getInstance();
	engine.accelerometerSensor = ASensorManager_getDefaultSensor(engine.sensorManager,
	ASENSOR_TYPE_ACCELEROMETER);
	engine.sensorEventQueue = ASensorManager_createEventQueue(engine.sensorManager,
	state->looper, LOOPER_ID_USER, NULL, NULL);

	if (state->savedState != NULL) {
	// We are starting with a previous saved state; restore from it.
	engine.state = (struct saved_state)state->savedState;
	}

	// loop waiting for stuff to do.

	while (1) {
	// Read all pending events.
	int ident;
	int events;
	struct android_poll_source* source;

	// If not animating, we will block forever waiting for events.
	// If animating, we loop until all events are read, then continue
	// to draw the next frame of animation.
	while ((ident=ALooper_pollAll(engine.animating ? 0 : -1, NULL, &events,
	(void**)&source)) >= 0) {

	// Process this event.
	if (source != NULL) {
	source->process(state, source);
	}

	// If a sensor has data, process it now.
	if (ident == LOOPER_ID_USER) {
	if (engine.accelerometerSensor != NULL) {
	ASensorEvent event;
	while (ASensorEventQueue_getEvents(engine.sensorEventQueue,
	&event, 1) > 0) {
	LOGI("accelerometer: x=%f y=%f z=%f",
	event.acceleration.x, event.acceleration.y,
	event.acceleration.z);
	}
	}
	}

	// Check if we are exiting.
	if (state->destroyRequested != 0) {
	engine_term_display(&engine);
	return;
	}
	}

	if (engine.animating) {
	// Done with events; draw next animation frame.
	engine.state.angle += .01f;
	if (engine.state.angle > 1) {
	engine.state.angle = 0;
	}

	// Drawing is throttled to the screen update rate, so there
	// is no need to do timing here.
	engine_draw_frame(&engine);
	}
	}
	}
	//END_INCLUDE(all)