From 55f6091e3d0b971d9c2ccad8c810aca075f25279 Mon Sep 17 00:00:00 2001
From: Daniel Willmann <d.willmann@samsung.com>
Date: Fri, 14 Dec 2012 23:38:31 +0000
Subject: [PATCH] ecore_audio: Example for user generated sounds

Uses the custom function support, which can probably be improved

Signed-off-by: Daniel Willmann <d.willmann@samsung.com>

SVN revision: 81002
---
 src/examples/ecore/Makefile.am          |  4 ++
 src/examples/ecore/ecore_audio_custom.c | 75 +++++++++++++++++++++++++
 2 files changed, 79 insertions(+)
 create mode 100644 src/examples/ecore/ecore_audio_custom.c

diff --git a/src/examples/ecore/Makefile.am b/src/examples/ecore/Makefile.am
index 170e3b7fb4..a91d874dd2 100644
--- a/src/examples/ecore/Makefile.am
+++ b/src/examples/ecore/Makefile.am
@@ -53,8 +53,12 @@ ecore_timer_example
 
 if HAVE_ECORE_AUDIO
 EXTRA_PROGRAMS += \
+ecore_audio_custom \
 ecore_audio_playback
 
+ecore_audio_custom_SOURCES = ecore_audio_custom.c
+ecore_audio_custom_LDADD = $(top_builddir)/src/lib/ecore_audio/libecore_audio.la $(top_builddir)/src/lib/ecore/libecore.la $(top_builddir)/src/lib/eina/libeina.la @ECORE_LIBS@
+
 ecore_audio_playback_SOURCES = ecore_audio_playback.c
 ecore_audio_playback_LDADD = $(top_builddir)/src/lib/ecore_audio/libecore_audio.la $(top_builddir)/src/lib/ecore/libecore.la $(top_builddir)/src/lib/eina/libeina.la @ECORE_LIBS@
 
diff --git a/src/examples/ecore/ecore_audio_custom.c b/src/examples/ecore/ecore_audio_custom.c
new file mode 100644
index 0000000000..d94a4b4095
--- /dev/null
+++ b/src/examples/ecore/ecore_audio_custom.c
@@ -0,0 +1,75 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <termios.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <Ecore.h>
+#include <Ecore_Audio.h>
+#include <math.h>
+
+Ecore_Audio_Object *in = NULL;
+Ecore_Audio_Object *out = NULL;
+unsigned char volume = 255;
+
+
+int read_cb(void *user_data, void *data, int len)
+{
+  static long int phase1 = 0, phase2 = 0;
+  static int modulation = 0;
+
+  float *val = data;
+  int i;
+
+  for(i=0; i<len/4; i++, phase1++)
+    {
+       if (phase1 >= 44100/(440+modulation))
+         {
+            phase1 = 0;
+            modulation = sin(2 * M_PI * phase2 / 1000) * 100;
+            phase2++;
+         }
+
+       val[i++] = sin(2 * M_PI * (440+modulation) * (phase1) / 44100.0);
+       val[i] = sin(2 * M_PI * (440+modulation) * (phase1) / 44100.0);
+    }
+
+  return len;
+}
+
+Eina_Bool
+output_add(void *data)
+{
+   out = ecore_audio_output_add(ECORE_AUDIO_TYPE_PULSE);
+   ecore_audio_output_input_add(out, in);
+//   ecore_event_handler_add(ECORE_AUDIO_EVENT_SOURCE_DONE, _play_finished, NULL);
+
+   return EINA_FALSE;
+}
+
+int
+main(int argc, const char *argv[])
+{
+   ecore_init();
+   ecore_audio_init();
+
+   in = ecore_audio_input_add(ECORE_AUDIO_TYPE_CUSTOM);
+   if (!in)
+     {
+        printf("error when creating ecore audio source.\n");
+        goto end;
+     }
+   ecore_audio_input_name_set(in, "custom");
+   ecore_audio_input_callback_setup(in, read_cb, NULL);
+
+   ecore_timer_add(1, output_add, NULL);
+
+   ecore_main_loop_begin();
+
+end:
+   ecore_audio_shutdown();
+   ecore_shutdown();
+
+   return 0;
+}
+