76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <termios.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <Ecore.h>
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#include <Ecore_Audio.h>
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#include <math.h>
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Ecore_Audio_Object *in = NULL;
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Ecore_Audio_Object *out = NULL;
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unsigned char volume = 255;
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int read_cb(void *user_data, void *data, int len)
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{
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static long int phase1 = 0, phase2 = 0;
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static int modulation = 0;
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float *val = data;
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int i;
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for(i=0; i<len/4; i++, phase1++)
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{
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if (phase1 >= 44100/(440+modulation))
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{
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phase1 = 0;
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modulation = sin(2 * M_PI * phase2 / 1000) * 100;
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phase2++;
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}
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val[i++] = sin(2 * M_PI * (440+modulation) * (phase1) / 44100.0);
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val[i] = sin(2 * M_PI * (440+modulation) * (phase1) / 44100.0);
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}
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return len;
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}
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Eina_Bool
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output_add(void *data)
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{
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out = ecore_audio_output_add(ECORE_AUDIO_TYPE_PULSE);
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ecore_audio_output_input_add(out, in);
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// ecore_event_handler_add(ECORE_AUDIO_EVENT_SOURCE_DONE, _play_finished, NULL);
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return EINA_FALSE;
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}
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int
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main(int argc, const char *argv[])
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{
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ecore_init();
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ecore_audio_init();
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in = ecore_audio_input_add(ECORE_AUDIO_TYPE_CUSTOM);
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if (!in)
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{
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printf("error when creating ecore audio source.\n");
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goto end;
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}
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ecore_audio_input_name_set(in, "custom");
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ecore_audio_input_callback_setup(in, read_cb, NULL);
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ecore_timer_add(1, output_add, NULL);
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ecore_main_loop_begin();
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end:
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ecore_audio_shutdown();
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ecore_shutdown();
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return 0;
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}
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