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rbcodec: abstract tdspeed buffer allocation

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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>
This commit is contained in:
Nils Wallménius 2012-05-06 12:22:09 +02:00
parent 51a73d81cd
commit 3f61caa0cd
8 changed files with 173 additions and 110 deletions
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102
apps/rbcodec_helpers.c Normal file
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@ -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;
}
}