From 66e849a0b5b8b4dead0e45d521fa2d2673cd0eac Mon Sep 17 00:00:00 2001
From: casey langen <casey.langen@gmail.com>
Date: Mon, 27 Jan 2020 23:53:06 -0800
Subject: [PATCH] Added decode/encode example and refactored main.c a bit.

---
 src/core_c_demo/main.c | 79 +++++++++++++++++++++++++++++++++---------
 1 file changed, 62 insertions(+), 17 deletions(-)

diff --git a/src/core_c_demo/main.c b/src/core_c_demo/main.c
index 40253d52d..d936f707b 100644
--- a/src/core_c_demo/main.c
+++ b/src/core_c_demo/main.c
@@ -3,12 +3,55 @@
 #include <unistd.h>
 #include <core_c/musikcore_c.h>
 
-int main(int argc, char** argv) {
-    mcsdk_context* context = NULL;
-    mcsdk_context_init(&context);
-    if (context) {
-        printf("initialized\n");
+#define INPUT_FILE "/home/clangen/in.opus"
+#define OUTPUT_FILE "/home/clangen/out.flac"
+
+static void test_decode_encode() {
+    mcsdk_data_stream in = mcsdk_env_open_data_stream(INPUT_FILE, mcsdk_stream_open_flags_read);
+    mcsdk_data_stream out = mcsdk_env_open_data_stream(OUTPUT_FILE, mcsdk_stream_open_flags_write);
+    if (mcsdk_handle_ok(in) && mcsdk_handle_ok(out)) {
+        printf("test_decode_encode: decoding from %s\n", INPUT_FILE);
+        printf("test_decode_encode: encoding to %s\n", OUTPUT_FILE);
+        mcsdk_decoder decoder = mcsdk_env_open_decoder(in);
+        mcsdk_encoder encoder = mcsdk_env_open_encoder(".ogg");
+        if (mcsdk_handle_ok(decoder) && mcsdk_handle_ok(encoder)) {
+            printf("test_decode_encode: encoder and decoder opened successfully. running...\n");
+            if (mcsdk_encoder_get_type(encoder) == mcsdk_encoder_type_blocking) {
+                mcsdk_blocking_encoder be = mcsdk_cast_handle(encoder);
+                mcsdk_audio_buffer buffer = mcsdk_env_create_audio_buffer(4096, 44100, 2);
+                if (mcsdk_blocking_encoder_initialize(be, out, 44100, 2, 192)) {
+                    while (mcsdk_decoder_fill_buffer(decoder, buffer)) {
+                        mcsdk_blocking_encoder_encode(be, buffer);
+                    }
+                    mcsdk_blocking_encoder_finalize(be);
+                }
+                mcsdk_audio_buffer_release(buffer);
+            }
+        }
+        mcsdk_decoder_release(decoder);
+        mcsdk_encoder_release(encoder);
     }
+    mcsdk_data_stream_release(in);
+    mcsdk_data_stream_release(out);
+    printf("test_decode_encode: done.\n");
+}
+
+static void test_playback(mcsdk_context* context) {
+    printf("test_playback: loading 'a day in the life' tracks\n");
+    mcsdk_track_list tl = mcsdk_svc_metadata_query_tracks(
+        context->metadata, "a day in the life", mcsdk_no_limit, mcsdk_no_offset);
+    mcsdk_svc_playback_play(context->playback, tl, 0);
+    mcsdk_track_list_release(tl);
+    printf("test_playback: playing for 5 seconds...\n");
+    for (int i = 0; i < 5; i++) {
+        usleep(1000000);
+        printf("  %d\n", i + 1);
+    }
+    printf("test_playback: done.\n");
+}
+
+static void test_metadata(mcsdk_context* context) {
+    printf("test_metadata: querying 'beatles' albums\n");
     mcsdk_map_list ml = mcsdk_svc_metadata_query_albums(context->metadata, "beatles");
     int count = mcsdk_map_list_get_count(ml);
     for (int i = 0; i < count; i++) {
@@ -16,21 +59,23 @@ int main(int argc, char** argv) {
         size_t len = mcsdk_map_get_string(m, "album", NULL, 0);
         char* str = malloc(len * sizeof(char));
         mcsdk_map_get_string(m, "album", str, len);
-        printf("%s\n", str);
+        printf("  %s\n", str);
         free(str);
     }
     mcsdk_map_list_release(ml);
-    mcsdk_track_list tl = mcsdk_svc_metadata_query_tracks(
-        context->metadata, "a day in the life", mcsdk_no_limit, mcsdk_no_offset);
-    mcsdk_svc_playback_play(context->playback, tl, 0);
-    mcsdk_track_list_release(tl);
-    printf("playing for 5 seconds...");
-    for (int i = 0; i < 5; i++) {
-        usleep(1000000);
-        printf("  %d\n", i + 1);
+    printf("test_metadata: done.\n");
+}
+
+int main(int argc, char** argv) {
+    mcsdk_context* context = NULL;
+    mcsdk_context_init(&context);
+    if (context) {
+        printf("main: context initialized\n");
+        test_metadata(context);
+        test_playback(context);
+        test_decode_encode(context);
+        mcsdk_context_release(&context);
+        printf("main: context released\n");
     }
-    printf("done playing, shutting down...\n");
-    mcsdk_context_release(&context);
-    printf("dead\n");
     return 0;
 }