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sdlWindow.c
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sdlWindow.c
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/* This file is part of Spectrum3D.
Spectrum3D is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Spectrum3D is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Spectrum3D. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
//#include <stdarg.h>
#include <string.h>
#include <gst/gst.h>
#include <gtk/gtk.h>
#include <jack/jack.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <SDL/SDL.h>
#include <SDL/SDL_ttf.h>
gint64 pos;
static GtkWidget *mainWindow;
GstElement *pipeline, *audio;
GLfloat magnitude;
#include "functions.h"
/* Set up OpenGl */
void setupOpengl() {
glViewport(0, 0, WIDTH_WINDOW, HEIGHT_WINDOW);
glMatrixMode(GL_PROJECTION);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gluPerspective(45, (float)WIDTH_WINDOW/HEIGHT_WINDOW, 0.1, 200);
glMatrixMode(GL_MODELVIEW);
}
/* auto-decode audio file (decodebin) */
static void cb_newpad (GstElement *decodebin, GstPad *pad, gboolean last, gpointer data)
{
GstCaps *caps;
GstStructure *str;
GstPad *audiopad;
audiopad = gst_element_get_static_pad (audio, "sink");
if (GST_PAD_IS_LINKED (audiopad)) {
g_object_unref (audiopad);
return;
}
caps = gst_pad_get_caps (pad);
str = gst_caps_get_structure (caps, 0);
if (!g_strrstr (gst_structure_get_name (str), "audio")) {
gst_caps_unref (caps);
gst_object_unref (audiopad);
return;
}
gst_caps_unref (caps);
gst_pad_link (pad, audiopad);
g_object_unref (audiopad);
}
/* Detect keyboard and mouse events in the SDL window */
void sdlEvent()
{
Uint8* keys;
SDL_Event event;
int MouseX,MouseY;
/* Keyboard events */
keys = SDL_GetKeyState(NULL);
if ( keys [SDLK_ESCAPE] ) {
onStop();
}
else if ( keys[SDLK_s] && keys[SDLK_UP] ) {
if (zoom < 2500){
zoom+=5;
}
}
else if ( keys[SDLK_s] && keys[SDLK_DOWN] ) {
if (zoom > 0){
zoom-=5;
}
}
else if ( keys[SDLK_x] && keys[SDLK_RIGHT] ) {
X+=0.004;
}
else if ( keys[SDLK_x] && keys[SDLK_LEFT] ) {
X-=0.004;
}
else if ( keys[SDLK_y] && keys[SDLK_UP] ) {
Y+=0.004;
}
else if ( keys[SDLK_y] && keys[SDLK_DOWN] ) {
Y-=0.004;
}
else if ( keys[SDLK_z] && keys[SDLK_UP] ) {
Z+=0.004;
}
else if ( keys[SDLK_z] && keys[SDLK_DOWN] ) {
Z-=0.004;
}
else if ( keys[SDLK_c] && keys[SDLK_UP] ) {
AngleZ+=0.4;
}
else if ( keys[SDLK_c] && keys[SDLK_DOWN] ) {
AngleZ-=0.4;
}
else if ( keys[SDLK_g] && keys[SDLK_UP] ) {
if (gain < 1.996){
gain+=0.005;
}
}
else if ( keys[SDLK_g] && keys[SDLK_DOWN] ) {
if (gain > 0.005){
gain-=0.005;
}
}
else if ( keys[SDLK_UP] ) {
AngleV+=0.4;
}
else if ( keys[SDLK_DOWN] ) {
AngleV-=0.4;
}
else if ( keys[SDLK_RIGHT] && !keys[SDLK_v] ) {
AngleH+=0.4;
}
else if ( keys[SDLK_LEFT] ) {
AngleH-=0.4;
}
else if ( keys[SDLK_SPACE] ) {
sdlWindow();
}
else if ( keys[SDLK_p] ) {
zoom+=5;
}
/* Mouse and combined keyboard and mouse events */
if(SDL_GetMouseState(NULL, NULL)&SDL_BUTTON(1)) {
SDL_GetRelativeMouseState(&MouseX,&MouseY);
if ( keys[SDLK_x] && (MouseX < 100 && MouseX > -100) ) {
if (MouseX > 0) {
X+=0.02;
}
else if (MouseX < 0) {
X-=0.02;
}
}
else if ( keys[SDLK_y] && (MouseY < 100 && MouseY > -100) ) {
if (MouseY > 0) {
Y-=0.02;
}
else if (MouseY < 0) {
Y+=0.02;
}
}
else if ( keys[SDLK_z] && (MouseY < 100 && MouseY > -100) ) {
if (MouseY > 0) {
Z-=0.02;
}
else if (MouseY < 0) {
Z+=0.02;
}
}
else if ( keys[SDLK_c] && ((MouseX < 10 && MouseX > -10) || (MouseY < 10 && MouseY > -10))) {
AngleZ-=MouseY/10;
}
else if ((MouseX < 10 && MouseX > -10) || (MouseY < 10 && MouseY > -10)) {
AngleH+=MouseX/10;
AngleV+=MouseY/10;
}
}
SDL_PollEvent(&event);
switch (event.type)
{
case SDL_QUIT:
onStop();
break;
case SDL_KEYDOWN:
switch(event.key.keysym.sym) {
case SDLK_ESCAPE:
onStop();
break;
default:
break;
}
default:
break;
}
}
/* Detect keyboard and mouse events in the SDL window while paused*/
int sdlEventPaused()
{
Uint8* keys;
SDL_Event event;
int MouseX,MouseY;
int result = 0;
SDL_EnableKeyRepeat(10, 10);
/* Keyboard events */
keys = SDL_GetKeyState(NULL);
if ( keys [SDLK_ESCAPE] ) {
onStop();
}
else if ( keys[SDLK_s] && keys[SDLK_UP] ) {
if (zoom < 2500){
zoom+=5;
}
}
else if ( keys[SDLK_s] && keys[SDLK_DOWN] ) {
if (zoom > 0){
zoom-=5;
}
}
else if ( keys[SDLK_x] && keys[SDLK_RIGHT] ) {
X+=0.004;
}
else if ( keys[SDLK_x] && keys[SDLK_LEFT] ) {
X-=0.004;
}
else if ( keys[SDLK_y] && keys[SDLK_UP] ) {
Y+=0.004;
}
else if ( keys[SDLK_y] && keys[SDLK_DOWN] ) {
Y-=0.004;
}
else if ( keys[SDLK_z] && keys[SDLK_UP] ) {
Z+=0.004;
}
else if ( keys[SDLK_z] && keys[SDLK_DOWN] ) {
Z-=0.004;
}
else if ( keys[SDLK_c] && keys[SDLK_UP] ) {
AngleZ+=0.4;
}
else if ( keys[SDLK_c] && keys[SDLK_DOWN] ) {
AngleZ-=0.4;
}
else if ( keys[SDLK_g] && keys[SDLK_UP] ) {
if (gain < 2){
gain+=0.001;
}
}
else if ( keys[SDLK_g] && keys[SDLK_DOWN] ) {
if (gain > 0){
gain-=0.001;
}
}
else if ( keys[SDLK_UP] ) {
AngleV+=0.4;
}
else if ( keys[SDLK_DOWN] ) {
AngleV-=0.4;
}
else if ( keys[SDLK_RIGHT] && !keys[SDLK_v] ) {
AngleH+=0.4;
}
else if ( keys[SDLK_LEFT] ) {
AngleH-=0.4;
}
else if ( keys[SDLK_SPACE] ) {
sdlWindow();
}
if ( keys[SDLK_c] || keys[SDLK_g] || keys[SDLK_s] || keys[SDLK_x] || keys[SDLK_y] || keys[SDLK_z] || keys[SDLK_UP] || keys[SDLK_DOWN] || keys[SDLK_LEFT] || keys[SDLK_RIGHT] || keys[SDLK_SPACE] ) {
result = 1;
}
/* Mouse and combined keyboard and mouse events */
if(SDL_GetMouseState(NULL, NULL)&SDL_BUTTON(1)) {
result = 1;
SDL_GetRelativeMouseState(&MouseX,&MouseY);
if ( keys[SDLK_x] && (MouseX < 100 && MouseX > -100) ) {
if (MouseX > 0) {
X+=0.02;
}
else if (MouseX < 0) {
X-=0.02;
}
}
else if ( keys[SDLK_y] && (MouseY < 100 && MouseY > -100) ) {
if (MouseY > 0) {
Y-=0.02;
}
else if (MouseY < 0) {
Y+=0.02;
}
}
else if ( keys[SDLK_z] && (MouseY < 100 && MouseY > -100) ) {
if (MouseY > 0) {
Z-=0.02;
}
else if (MouseY < 0) {
Z+=0.02;
}
}
else if ( keys[SDLK_c] && ((MouseX < 10 && MouseX > -10) || (MouseY < 10 && MouseY > -10))) {
AngleZ-=MouseY/10;
}
else if ((MouseX < 10 && MouseX > -10) || (MouseY < 10 && MouseY > -10)) {
AngleH+=MouseX/10;
AngleV+=MouseY/10;
}
}
SDL_PollEvent(&event);
switch (event.type)
{
case SDL_QUIT:
onStop();
break;
case SDL_KEYDOWN:
switch(event.key.keysym.sym) {
case SDLK_ESCAPE:
onStop();
break;
default:
break;
}
default:
break;
}
return result;
}
/* Play a very small part of an audio file every time this is called */
gboolean playSlowly()
{
SDL_Event event;
Uint8* keys;
SDL_PollEvent(&event);
keys = SDL_GetKeyState(NULL);
if ( keys[SDLK_v] && keys[SDLK_RIGHT] ) {
gst_element_set_state (pipeline, GST_STATE_PLAYING);
SDL_Delay(50);
gst_element_set_state (pipeline, GST_STATE_PAUSED);
}
return TRUE;
}
/* Gstreamer message handler */
static gboolean message_handler (GstBus * bus, GstMessage * message, gpointer data)
{
counter = counter +1;
sdlEvent();
if (message->type == GST_MESSAGE_ELEMENT && counter > counterNumber) {
counter = 0;
const GstStructure *s = gst_message_get_structure (message);
const gchar *name = gst_structure_get_name (s);
GstClockTime endtime;
if (strcmp (name, "spectrum") == 0)
{
if (!gst_structure_get_clock_time (s, "endtime", &endtime))
endtime = GST_CLOCK_TIME_NONE;
magnitudes = gst_structure_get_value (s, "magnitude");
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glLoadIdentity();
displaySpectro();
/*if (lineScale == 1) {
drawScale();
}
if (textScale == 1) {
RenderText();
}
SDL_GL_SwapBuffers();*/
}
}
return TRUE;
}
/* Print the total duration and the time position in a terminal when playing an audio file */
static gboolean cb_print_position (GstElement *pipeline)
{
if (playing) {
GstFormat fmt = GST_FORMAT_TIME;
gint64 len;
if (gst_element_query_position (pipeline, &fmt, &pos)
&& gst_element_query_duration (pipeline, &fmt, &len)) {
g_print ("Time: %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT "\r",
GST_TIME_ARGS (pos), GST_TIME_ARGS (len));
}
}
return TRUE;
}
/* Seek backward or forward when playing an audio file */
static gboolean seek_to_time (GstElement *pipeline)
{
if (forward == 1 || backward == 1)
{
if (!gst_element_seek (pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
GST_SEEK_TYPE_SET, nSec * GST_SECOND + pos,
GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE)) {
g_print ("Seek failed!\n");
}
}
return TRUE;
}
/* This is the main function where gstreamer handles the audio stream, either from the microphone (typeSource == 0), or from an audio file (typeSource == 1), or from jack (typeSource == 2) */
void sdlWindow()
{
/* play if paused or stopped; pause if playing */
if (playing == 1)
{
if (pose == 0) {
pose = 1;
gst_element_set_state (pipeline, GST_STATE_PAUSED);
g_timeout_add (80, (GSourceFunc) displayPausedSpectro, pipeline);
if (typeSource == 1) {
g_timeout_add (80, (GSourceFunc) playSlowly, pipeline);
}
}
else {
pose = 0;
gst_element_set_state (pipeline, GST_STATE_PLAYING);
}
}
/* Play */
else if (playing == 0)
{
PROPORTION = (width-200);
PROPORTION = (float)width / 1000;
x = 1.2 * RESIZE;
z = PROPORTION;
X = -0.7 * RESIZE;
Y = -0.1 * RESIZE;
Z = -1.05;
AUDIOFREQ = 44100;
int interval = 100000000;
GstElement *src, *dec, *audioconvert, *conv, *spectrum, *sink;
GstBus *bus;
GstCaps *caps;
GstPad *audiopad;
GstStateChangeReturn ret;
TTF_Init();
SDL_Init(SDL_INIT_VIDEO);
SDL_SetVideoMode(WIDTH_WINDOW, HEIGHT_WINDOW, 24, SDL_OPENGL | SDL_GL_DOUBLEBUFFER);
SDL_WM_SetCaption("Spectrum : Real-Time Spectral Analysis",NULL);
font = TTF_OpenFont("/usr/share/fonts/truetype/freefont/FreeSans.ttf", 16 * RESIZE);
setupOpengl();
gst_init (NULL, NULL);
loop = g_main_loop_new(NULL, FALSE);
playing = 1;
if (typeSource == 2) //source == JACK
{
pipeline = gst_pipeline_new ("pipeline");
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch(bus, message_handler, NULL);
gst_object_unref(bus);
jack_client_t *src_client;
jack_status_t status;
src_client = jack_client_open ("src_client", JackNoStartServer, &status); // create jack clients
if (src_client == NULL) {
if (status & JackServerFailed)
{
GtkWidget *pAbout;
//gchar *sSite = "";
pAbout = gtk_message_dialog_new (GTK_WINDOW(mainWindow),
GTK_DIALOG_MODAL,
GTK_MESSAGE_WARNING,
GTK_BUTTONS_OK,
"JACK server not running");
gtk_dialog_run(GTK_DIALOG(pAbout));
gtk_widget_destroy(pAbout);
SDL_Quit();
playing = 0;
}
else
{
GtkWidget *pAbout;
gchar *sSite = "";
pAbout = gtk_message_dialog_new (GTK_WINDOW(mainWindow),
GTK_DIALOG_MODAL,
GTK_MESSAGE_WARNING,
GTK_BUTTONS_OK,
"jack_client_open() failed %s",
sSite);
gtk_dialog_run(GTK_DIALOG(pAbout));
gtk_widget_destroy(pAbout);
SDL_Quit();
exit(1);
}
}
src = gst_element_factory_make ("jackaudiosrc", NULL);
sink = gst_element_factory_make ("fakesink", NULL);
//g_object_set (src, "client", src_client, NULL);
spectrum = gst_element_factory_make ("spectrum", "spectrum");
g_object_set (G_OBJECT (spectrum), "bands", spect_bands, "threshold", -80, "interval", interval, NULL);
gst_bin_add_many (GST_BIN (pipeline), src, spectrum, sink, NULL);
if (!gst_element_link (src, spectrum) ||
!gst_element_link (spectrum, sink)) {
fprintf (stderr, "can't link elements\n");
exit (1);
}
gst_element_set_state(pipeline, GST_STATE_PLAYING);
g_main_loop_run (loop);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
}
else if (typeSource == 0) // source == microphone with ALSA
{
pipeline = gst_pipeline_new ("pipeline");
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch(bus, message_handler, NULL);
gst_object_unref(bus);
src = gst_element_factory_make ("alsasrc", "src");
audioconvert = gst_element_factory_make ("audioconvert", NULL);
g_assert (audioconvert);
spectrum = gst_element_factory_make ("spectrum", "spectrum");
g_object_set (G_OBJECT (spectrum), "bands", spect_bands, "threshold", -80, "interval", interval, NULL);
sink = gst_element_factory_make ("fakesink", "sink");
gst_bin_add_many (GST_BIN (pipeline), src, audioconvert, spectrum, sink, NULL);
caps = gst_caps_new_simple ("audio/x-raw-int", "rate", G_TYPE_INT, AUDIOFREQ, NULL);
if (!gst_element_link (src, audioconvert) ||
!gst_element_link_filtered (audioconvert, spectrum, caps) ||
!gst_element_link (spectrum, sink)) {
fprintf (stderr, "can't link elements\n");
exit (1);
}
gst_caps_unref (caps);
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
if (ret == GST_STATE_CHANGE_FAILURE) {
g_print ("Failed to start up pipeline!\n");
}
g_main_loop_run (loop);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
}
else if (typeSource == 1) // source == file read from disk, using ALSA without Jack
{
pipeline = gst_pipeline_new ("pipeline");
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch (bus, message_handler, NULL);
gst_object_unref (bus);
src = gst_element_factory_make ("filesrc", "source");
g_object_set (G_OBJECT (src), "location", sFile, NULL);
dec = gst_element_factory_make ("decodebin", "decoder");
g_signal_connect (dec, "new-decoded-pad", G_CALLBACK (cb_newpad), NULL);
spectrum = gst_element_factory_make ("spectrum", "spectrum");
g_object_set (G_OBJECT (spectrum), "bands", spect_bands, "threshold", -80,
"message", TRUE, "message-phase", TRUE, "interval", interval, NULL);
gst_bin_add_many (GST_BIN (pipeline), src, dec, NULL);
gst_element_link (src, dec);
audio = gst_bin_new ("audiobin");
conv = gst_element_factory_make ("audioconvert", "aconv");
audiopad = gst_element_get_static_pad (conv, "sink");
sink = gst_element_factory_make ("alsasink", "sink");
gst_bin_add_many (GST_BIN (audio), conv, spectrum, sink, NULL);
gst_element_link_many (conv, spectrum, sink, NULL);
gst_element_add_pad (audio,
gst_ghost_pad_new ("sink", audiopad));
gst_object_unref (audiopad);
gst_bin_add (GST_BIN (pipeline), audio);
g_timeout_add (200, (GSourceFunc) cb_print_position, pipeline);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
g_timeout_add (51, (GSourceFunc) seek_to_time, pipeline);
g_main_loop_run (loop);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (pipeline));
}
TTF_CloseFont(font);
SDL_Quit();
TTF_Quit();
}
}