From c3ce5c1fdd5525c9618f0e4c24ef75349ec2ac4e Mon Sep 17 00:00:00 2001
From: XANTRONIX Development
Date: Thu, 3 Feb 2022 18:04:47 -0500
Subject: holy shit idk what just happened but it works

---
 src/bank.c | 93 +++++++++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 65 insertions(+), 28 deletions(-)

diff --git a/src/bank.c b/src/bank.c
index ca07e6f..32a1da2 100644
--- a/src/bank.c
+++ b/src/bank.c
@@ -9,11 +9,11 @@ xas_bank *xas_bank_new(size_t sample_size,
                            size_t entry_count) {
     xas_bank *bank;
 
-    size_t entry_size_total = sizeof(xas_bank_entry) + entry_size;
+    size_t entry_size_total = sizeof(xas_bank_entry) + sample_size
+                                                       * entry_size;
 
-    size_t total = sizeof(xas_bank) + sample_size
-                                      * entry_size_total
-                                      * entry_count;
+    size_t total = sizeof(xas_bank) + entry_count
+                                      * entry_size_total;
 
     if ((bank = malloc(total)) == NULL) {
         goto error_malloc_bank;
@@ -60,50 +60,87 @@ static inline void *ptr(xas_audio_stream *stream, void *buf, size_t index) {
     return ((uint8_t *)buf) + stream->channels * stream->sample_size * index;
 }
 
-static ssize_t bank_fill(xas_bank *bank,
-                         int16_t *samples,
-                         size_t count,
-                         xas_audio_stream *stream) {
-    size_t index_o = 0,
-           left    = count;
+ssize_t xas_bank_record(xas_bank *bank,
+                          xas_audio_stream *input,
+                          size_t entry_index,
+                          size_t count) {
+    xas_bank_entry *entry = &((xas_bank_entry *)(bank + 1))[entry_index];
 
-    if (!(bank->flags & XAS_BANK_ACTIVE)) {
-        memset(samples, '\0', count * bank->sample_size);
+    size_t left    = count,
+           index_o = 0;
 
-        return count;
+    if (count > bank->entry_size) {
+        count = bank->entry_size;
     }
 
     while (left) {
-        xas_bank_entry *entry =
-            &((xas_bank_entry *)(bank + 1))[bank->entry];
+        ssize_t readlen,
+                amount = left > count? count: left;
 
-        size_t remaining = bank->entry_size - bank->index,
-               amount    = remaining < left? remaining: left;
+        void *buf;
 
-        memcpy(ptr(stream, samples,   index_o),
-               ptr(stream, entry + 1, bank->index),
-               amount * stream->channels * stream->sample_size);
+        if ((readlen = xas_audio_stream_read(input, &buf, amount)) < 0) {
+            goto error_audio_stream_read;
+        }
+
+        memcpy(ptr(input, entry + 1, index_o),
+               ptr(input, buf,       0),
+               readlen * bank->sample_size);
+
+        left    -= readlen;
+        index_o += readlen;
+    }
+
+    return entry->duration = index_o;
+
+error_audio_stream_read:
+    return -1;
+}
+
+static ssize_t stream_fill(xas_bank *bank,
+                           int16_t *samples,
+                           size_t count,
+                           xas_audio_stream *stream) {
+        size_t index_o = 0,
+               left    = count;
+
+    while (left) {
+        if (bank->flags & XAS_BANK_ACTIVE) {
+            xas_bank_entry *entry =
+                &((xas_bank_entry *)(bank + 1))[bank->entry];
+
+            size_t remaining = entry->duration - bank->index,
+                   amount    = remaining < left? remaining: left;
+
+            memcpy(ptr(stream, samples,   index_o),
+                   ptr(stream, entry + 1, bank->index),
+                   amount * stream->channels * stream->sample_size);
 
-        left    -= amount;
-        index_o += amount;
+            left        -= amount;
+            bank->index += amount;
+            index_o     += amount;
 
-        bank->index += amount;
+            if (bank->index == entry->duration) {
+                xas_bank_stop(bank);
+            }
+        } else {
+            memset(ptr(stream, samples, index_o), '\0', left);
 
-        if (bank->index == entry->duration) {
-            bank->index = 0;
+            index_o += left;
+            left     = 0;
         }
     }
 
     return count;
 }
 
-void bank_cleanup(xas_bank *bank, xas_audio_stream *stream) {
+void stream_cleanup(xas_bank *bank, xas_audio_stream *stream) {
     return;
 }
 
 xas_audio_stream *xas_bank_stream_new(xas_bank *bank) {
-    return xas_audio_stream_new_source((xas_audio_fill)bank_fill,
-                                         (xas_audio_cleanup)bank_cleanup,
+    return xas_audio_stream_new_source((xas_audio_fill)stream_fill,
+                                         (xas_audio_cleanup)stream_cleanup,
                                          bank,
                                          XAS_AUDIO_MONO,
                                          bank->sample_size,
-- 
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