From 59d4694efd295217e15c90ca5636c4bdcfecf222 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development
Date: Mon, 31 Jan 2022 20:47:58 -0500
Subject: This is getting annoyingly close to working...

---
 examples/test.c | 114 +++++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 83 insertions(+), 31 deletions(-)

(limited to 'examples')

diff --git a/examples/test.c b/examples/test.c
index e1da192..49937aa 100644
--- a/examples/test.c
+++ b/examples/test.c
@@ -8,6 +8,7 @@
 
 #include <xas/synth.h>
 #include <xas/audio.h>
+#include <xas/mixer.h>
 #include <xas/riff.h>
 
 #define SYNTH_STATUS_CLEAR  0
@@ -51,61 +52,112 @@ static int16_t sine_sample(xas_synth *synth, synth_sine *sine) {
     return ret;
 }
 
-static void sine_destroy(xas_synth *synth, synth_sine *sine) {
+static void sine_cleanup(xas_synth *synth, synth_sine *sine) {
     return;
 }
 
 int main(int argc, char **argv) {
-    xas_audio_stream *stream;
-    xas_synth *synth;
+    xas_mixer *mixer;
 
-    synth_sine sine = {
-        .flags     = SYNTH_STATUS_ON,
-        .phase     = 0.0f,
-        .frequency = 220
+    xas_audio_stream *synth_l,
+                       *synth_r,
+                       *wave;
+
+    synth_sine sine_channels[2] = {
+        { SYNTH_STATUS_ON, 0.0f, 220 },
+        { SYNTH_STATUS_ON, 0.0f, 420 },
     };
 
     size_t sample_rate = 44100,
-           duration_s  = 60;
-
-    int i;
+           duration_s  = 60,
+           i;
 
     if (argc != 2) {
         usage(argc, argv, "No output file provided");
     }
 
-    if ((stream = xas_riff_file_open(argv[1],
-                                       2,
-                                       sample_rate,
-                                       1,
-                                       O_WRONLY | O_CREAT | O_TRUNC)) == NULL) {
+    if ((wave = xas_riff_file_open(argv[1],
+                                     XAS_AUDIO_STREAM_PCM_16_BIT,
+                                     sample_rate,
+                                     XAS_AUDIO_STREAM_STEREO,
+                                     O_WRONLY | O_CREAT | O_TRUNC)) == NULL) {
         goto error_riff_file_open;
     }
 
-    if ((synth = xas_synth_new(sample_rate,
-                                 (xas_synth_callback_sample)sine_sample,
-                                 (xas_synth_callback_destroy)sine_destroy,
-                                 &sine)) == NULL) {
-        goto error_synth_new;
+    if ((synth_l = xas_synth_new(XAS_AUDIO_STREAM_PCM_16_BIT,
+                                   sample_rate,
+                                   sample_rate,
+                                   (xas_synth_callback_sample)sine_sample,
+                                   (xas_synth_callback_cleanup)sine_cleanup,
+                                   &sine_channels[0])) == NULL) {
+        goto error_synth_new_l;
     }
 
-    for (i=0; i < duration_s * sample_rate; i++) {
-        int16_t samples[1] = {
-            xas_synth_sample(synth)
-        };
+    if ((synth_r = xas_synth_new(XAS_AUDIO_STREAM_PCM_16_BIT,
+                                   sample_rate,
+                                   sample_rate,
+                                   (xas_synth_callback_sample)sine_sample,
+                                   (xas_synth_callback_cleanup)sine_cleanup,
+                                   &sine_channels[1])) == NULL) {
+        goto error_synth_new_r;
+    }
+
+    if ((mixer = xas_mixer_new(XAS_AUDIO_STREAM_PCM_16_BIT,
+                                 sample_rate,
+                                 XAS_AUDIO_STREAM_STEREO,
+                                 sample_rate)) == NULL) {
+        goto error_mixer_new;
+    }
 
-        xas_audio_stream_write(stream,
-                                 samples,
-                                 1);
+    if (xas_mixer_input_add(mixer, synth_l, 0.3, -1.0) == NULL) {
+        goto error_mixer_input_add;
     }
 
-    xas_audio_stream_flush(stream);
-    xas_audio_stream_destroy(stream);
+    if (xas_mixer_input_add(mixer, synth_r, 0.3, 1.0) == NULL) {
+        goto error_mixer_input_add;
+    }
+
+    printf("Good here\n");
+
+    for (i=0; i<duration_s; i++) {
+        int16_t *buf;
+        ssize_t readlen;
+
+        printf("one second\n");
+
+        if ((readlen = xas_audio_stream_read(mixer->output,
+                                               (void **)&buf,
+                                               sample_rate)) < 0) {
+            goto error_audio_stream_read;
+        }
+
+        if (xas_audio_stream_write(wave, buf, readlen) < 0) {
+            goto error_audio_stream_write;
+        }
+    }
+
+    xas_audio_stream_flush(wave);
+
+    xas_mixer_destroy(mixer);
+    xas_audio_stream_destroy(synth_r);
+    xas_audio_stream_destroy(synth_l);
+    xas_audio_stream_destroy(wave);
 
     return EX_OK;
 
-error_synth_new:
-    xas_audio_stream_destroy(stream);
+error_audio_stream_write:
+error_audio_stream_read:
+error_mixer_input_add:
+    xas_mixer_destroy(mixer);
+
+error_mixer_new:
+    xas_audio_stream_destroy(synth_r);
+
+error_synth_new_r:
+    xas_audio_stream_destroy(synth_l);
+
+error_synth_new_l:
+    xas_audio_stream_destroy(wave);
 
 error_riff_file_open:
     return EX_OSERR;
-- 
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