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ecore_audio: Make custom input example work with eo 

Uses VIO to implement a custom read function

Signed-off-by: Daniel Willmann <d.willmann@samsung.com>
This commit is contained in:
Daniel Willmann 2013-04-17 19:11:25 +01:00
parent e89153a21d
commit 6df9640c10
2 changed files with 22 additions and 20 deletions
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3
src/examples/ecore/Makefile.am
View File

@ -75,7 +75,8 @@ $(top_builddir)/src/lib/eina/libeina.la \
if HAVE_ECORE_AUDIO
EXTRA_PROGRAMS += \
ecore_audio_playback \
ecore_audio_to_ogg
ecore_audio_to_ogg \
ecore_audio_custom
ECORE_AUDIO_COMMON_LDADD = \
$(top_builddir)/src/lib/ecore_audio/libecore_audio.la \

39
src/examples/ecore/ecore_audio_custom.c
View File

@ -11,19 +11,22 @@
#include <Ecore_Audio.h>
#include <math.h>
Ecore_Audio_Object *in = NULL;
Ecore_Audio_Object *out = NULL;
Eo *in = NULL;
Eo *out = NULL;
unsigned char volume = 255;
int read_cb(void *user_data, void *data, int len)
int read_cb(void *data EINA_UNUSED, Eo *eo_obj, void *buf, int len)
{
static long int phase1 = 0, phase2 = 0;
static int modulation = 0;
float *val = data;
double volume;
float *val = buf;
int i;
eo_do(eo_obj, ecore_audio_obj_volume_get(&volume));
for(i=0; i<len/4; i++, phase1++)
{
if (phase1 >= 44100/(440+modulation))
@ -33,22 +36,15 @@ int read_cb(void *user_data, void *data, int len)
phase2++;
}
val[i++] = sin(2 * M_PI * (440+modulation) * (phase1) / 44100.0);
val[i] = sin(2 * M_PI * (440+modulation) * (phase1) / 44100.0);
val[i] = sin(2 * M_PI * (440+modulation) * (phase1) / 44100.0) * volume;
}
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;
}
Ecore_Audio_Vio vio = {
.read = read_cb,
};
int
main(int argc, const char *argv[])
@ -56,16 +52,21 @@ main(int argc, const char *argv[])
ecore_init();
ecore_audio_init();
in = ecore_audio_input_add(ECORE_AUDIO_TYPE_CUSTOM);
out = eo_add(ECORE_AUDIO_OBJ_OUT_PULSE_CLASS, NULL);
in = eo_add(ECORE_AUDIO_OBJ_IN_CLASS, NULL);
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);
eo_do(in, ecore_audio_obj_name_set("wail"));
eo_do(in, ecore_audio_obj_in_samplerate_set(44100));
eo_do(in, ecore_audio_obj_in_channels_set(1));
eo_do(in, ecore_audio_obj_volume_set(0.7));
eo_do(in, ecore_audio_obj_vio_set(&vio, NULL, NULL));
ecore_timer_add(1, output_add, NULL);
eo_do(out, ecore_audio_obj_out_input_attach(in));
ecore_main_loop_begin();