From 4ad76652ef19daf6404e8a97eb73aeadfe1e66fb Mon Sep 17 00:00:00 2001
From: Solomon Peachy <pizza@shaftnet.org>
Date: Sat, 20 Jul 2019 17:32:49 -0400
Subject: Speech feedback in mpegplayer menus

Patch by Igor Poretsky

Change-Id: Idc6920e17be6537557f2b1cf00f7e559e30b45e8
---
 apps/plugins/mpegplayer/mpegplayer.c | 67 ++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

(limited to 'apps/plugins/mpegplayer/mpegplayer.c')

diff --git a/apps/plugins/mpegplayer/mpegplayer.c b/apps/plugins/mpegplayer/mpegplayer.c
index 6a33a544db..39ea484ff2 100644
--- a/apps/plugins/mpegplayer/mpegplayer.c
+++ b/apps/plugins/mpegplayer/mpegplayer.c
@@ -634,6 +634,54 @@ static unsigned draw_blendcolor(unsigned c1, unsigned c2, unsigned char amount)
 }
 #endif
 
+#ifdef PLUGIN_USE_IRAM
+/* IRAM preserving mechanism to enable talking menus */
+static char *iram_saved_copy;
+extern char iramstart[], iramend[];
+
+static void iram_saving_init(void)
+{
+#ifndef SIMULATOR
+    size_t size;
+    iram_saved_copy = (char *)rb->plugin_get_buffer(&size);
+
+    if (size >= (size_t)(iramend-iramstart))
+        iram_saved_copy += size - (size_t)(iramend - iramstart);
+    else
+#endif
+        iram_saved_copy = NULL;
+
+    return;
+}
+
+void mpegplayer_iram_preserve(void)
+{
+    if (iram_saved_copy)
+    {
+        rb->memcpy(iram_saved_copy, iramstart, iramend-iramstart);
+#ifdef HAVE_CPUCACHE_INVALIDATE
+        /* make the icache (if it exists) up to date with the new code */
+        rb->cpucache_invalidate();
+#endif /* HAVE_CPUCACHE_INVALIDATE */
+    }
+    return;
+}
+
+void mpegplayer_iram_restore(void)
+{
+    if (iram_saved_copy)
+    {
+        rb->audio_hard_stop();
+        rb->memcpy(iramstart, iram_saved_copy, iramend-iramstart);
+#ifdef HAVE_CPUCACHE_INVALIDATE
+        /* make the icache (if it exists) up to date with the new code */
+        rb->cpucache_invalidate();
+#endif /* HAVE_CPUCACHE_INVALIDATE */
+    }
+    return;
+}
+#endif
+
 /* Drawing functions that operate rotated on LCD_PORTRAIT displays -
  * most are just wrappers of lcd_* functions with transforms applied.
  * The origin is the upper-left corner of the OSD area */
@@ -2369,6 +2417,10 @@ enum plugin_status plugin_start(const void* parameter)
     int status = PLUGIN_OK; /* assume success */
     bool quit = false;
 
+#if defined(PLUGIN_USE_IRAM) && !defined(SIMULATOR)
+    bool preserved_talk_state;
+#endif
+
     if (parameter == NULL) {
         /* No file = GTFO */
         rb->splash(HZ*2, "No File");
@@ -2378,6 +2430,16 @@ enum plugin_status plugin_start(const void* parameter)
     /* Disable all talking before initializing IRAM */
     rb->talk_disable(true);
 
+#ifdef PLUGIN_USE_IRAM
+    iram_saving_init();
+
+#ifndef SIMULATOR
+    preserved_talk_state = rb->global_settings->talk_menu;
+    if (!iram_saved_copy)
+        rb->global_settings->talk_menu = false;
+#endif
+#endif
+
 #ifdef HAVE_LCD_COLOR
     rb->lcd_set_backdrop(NULL);
     rb->lcd_set_foreground(LCD_WHITE);
@@ -2528,6 +2590,11 @@ enum plugin_status plugin_start(const void* parameter)
 
     stream_exit();
 
+#if defined(PLUGIN_USE_IRAM) && !defined(SIMULATOR)
+    if (!iram_saved_copy)
+        rb->global_settings->talk_menu = preserved_talk_state;
+#endif
+
     rb->talk_disable(false);
 
     /* Actually handle delayed processing of system events of interest
-- 
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