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authorNils Wallménius <nils@rockbox.org>2012-05-06 12:22:09 +0200
committerNils Wallménius <nils@rockbox.org>2012-05-07 10:29:07 +0200
commit3f61caa0cd7e818416be08778f356efd54e596fb (patch)
tree9f0ca1be9d8cd4f0a2dcd8a3a7c20657925de21e /apps/rbcodec_helpers.c
parent51a73d81cda6136f901e8d56f4720dc28edf648a (diff)
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rbcodec: abstract tdspeed buffer allocation
Move code dealing with rockbox specific buflib allocations into a rockbox specific file and implement buffer allocation with malloc/free for warble/stand alone lib. Based on patch by Sean Bartell. Change-Id: I8cb85dad5890fbd34c1bb26abbb89c0b0f6b55cf Reviewed-on: http://gerrit.rockbox.org/144 Tested-by: Nils Wallménius <nils@rockbox.org> Reviewed-by: Michael Sevakis <jethead71@rockbox.org> Reviewed-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'apps/rbcodec_helpers.c')
-rw-r--r--apps/rbcodec_helpers.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/apps/rbcodec_helpers.c b/apps/rbcodec_helpers.c
new file mode 100644
index 0000000000..a7c592c62c
--- /dev/null
+++ b/apps/rbcodec_helpers.c
@@ -0,0 +1,102 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Nicolas Pitre <nico@cam.org>
+ * Copyright (C) 2006-2007 by Stéphane Doyon <s.doyon@videotron.ca>
+ * Copyright (C) 2012 Michael Sevakis
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "platform.h"
+#include "dsp_core.h"
+#include "core_alloc.h"
+#include "tdspeed.h"
+
+static int handles[4] = { 0, 0, 0, 0 };
+
+static int move_callback(int handle, void *current, void *new)
+{
+#if 0
+ /* Should not currently need to block this since DSP loop completes an
+ iteration before yielding and begins again at its input buffer */
+ if (dsp_is_busy(tdspeed_state.dsp))
+ return BUFLIB_CB_CANNOT_MOVE; /* DSP processing in progress */
+#endif
+
+ for (unsigned int i = 0; i < ARRAYLEN(handles); i++)
+ {
+ if (handle != handles[i])
+ continue;
+
+ tdspeed_move(i, current, new);
+ break;
+ }
+
+ return BUFLIB_CB_OK;
+}
+
+static struct buflib_callbacks ops =
+{
+ .move_callback = move_callback,
+ .shrink_callback = NULL,
+};
+
+/* Allocate timestretch buffers */
+bool tdspeed_alloc_buffers(int32_t **buffers, const int *buf_s, int nbuf)
+{
+ static const char *buffer_names[4] = {
+ "tdspeed ovl L",
+ "tdspeed ovl R",
+ "tdspeed out L",
+ "tdspeed out R"
+ };
+
+ for (int i = 0; i < nbuf; i++)
+ {
+ if (handles[i] <= 0)
+ {
+ handles[i] = core_alloc_ex(buffer_names[i], buf_s[i], &ops);
+
+ if (handles[i] <= 0)
+ return false;
+ }
+
+ if (buffers[i] == NULL)
+ {
+ buffers[i] = core_get_data(handles[i]);
+
+ if (buffers[i] == NULL)
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* Free timestretch buffers */
+void tdspeed_free_buffers(int32_t **buffers, int nbuf)
+{
+ for (int i = 0; i < nbuf; i++)
+ {
+ if (handles[i] > 0)
+ core_free(handles[i]);
+
+ handles[i] = 0;
+ buffers[i] = NULL;
+ }
+}
+