Allow setting bank player gain separately

3 files changed, 27 insertions, 10 deletions

diff --git a/examples/say.c b/examples/say.c
index c89a245..4edd864 100644
--- a/examples/say.c
+++ b/examples/say.c
@@ -154,7 +154,7 @@ int main(int argc, char **argv) {
         goto error_bank_record;
     }
 
-    xas_bank_player_select(player, 0, 1.0);
+    xas_bank_player_set_entry(player, 0);
 
     for (i=0; i<duration_frames; i++) {
         void *buf;
diff --git a/include/xas/bank.h b/include/xas/bank.h
index cd1511e..982302f 100644
--- a/include/xas/bank.h
+++ b/include/xas/bank.h
@@ -53,9 +53,9 @@ xas_bank_player *xas_bank_player_new(xas_bank *bank);
 
 void xas_bank_player_destroy(xas_bank_player *player);
 
-int xas_bank_player_select(xas_bank_player *player,
-                             size_t entry,
-                             float gain);
+void xas_bank_player_set_gain(xas_bank_player *player, float gain);
+
+int xas_bank_player_set_entry(xas_bank_player *player, size_t entry);
 
 int xas_bank_player_start(xas_bank_player *player);
 
diff --git a/src/bank.c b/src/bank.c
index 1d1dc3a..24e4466 100644
--- a/src/bank.c
+++ b/src/bank.c
@@ -118,6 +118,12 @@ error_riff_open_file:
     return -1;
 }
 
+static int set_gain(xas_bank_player *player, float gain) {
+    xas_bank_player_set_gain(player, gain);
+
+    return 0;
+}
+
 xas_bank_player *xas_bank_player_new(xas_bank *bank) {
     xas_bank_player *player;
 
@@ -125,8 +131,9 @@ xas_bank_player *xas_bank_player_new(xas_bank *bank) {
         goto error_malloc_player;
     }
 
-    player->obj.start = (xas_object_start_callback)xas_bank_player_start;
-    player->obj.stop  = (xas_object_stop_callback)xas_bank_player_stop;
+    player->obj.start    = (xas_object_start_callback)xas_bank_player_start;
+    player->obj.stop     = (xas_object_stop_callback)xas_bank_player_stop;
+    player->obj.set_gain = (xas_object_set_gain_callback)set_gain;
 
     player->bank   = bank;
     player->status = XAS_BANK_PLAYER_STOPPED;
@@ -144,13 +151,23 @@ void xas_bank_player_destroy(xas_bank_player *player) {
     free(player);
 }
 
-int xas_bank_player_select(xas_bank_player *player,
-                             size_t entry,
-                             float gain) {
+int xas_bank_player_set_entry(xas_bank_player *player, size_t entry) {
+    if (entry > player->bank->entry_count) {
+        errno = EINVAL;
+
+        goto error_invalid_entry;
+    }
+
     player->entry = entry;
-    player->gain  = gain;
 
     return 0;
+
+error_invalid_entry:
+    return -1;
+}
+
+void xas_bank_player_set_gain(xas_bank_player *player, float gain) {
+    player->gain = gain;
 }
 
 int xas_bank_player_start(xas_bank_player *player) {