Audio: Add a NULL audio device that can be used to simply unit-level testing of audio decoders
This commit is contained in:
Gregory Nutt
parent
78f56be4c1
commit
ca7d7c34ce
@ -84,6 +84,10 @@ endif
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endif
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endif
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ifeq ($(CONFIG_AUDIO_NULL),y)
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CSRCS += sam_audio_null.c
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endif
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ifeq ($(CONFIG_SAMA5_HSMCI0),y)
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CSRCS += sam_hsmci.c
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else
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168
configs/sama5d4-ek/src/sam_audio_null.c
Normal file
168
configs/sama5d4-ek/src/sam_audio_null.c
Normal file
@ -0,0 +1,168 @@
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/************************************************************************************
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* configs/sama5d4-ek/src/sam_audio_null.c
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*
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <debug.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/audio/audio.h>
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#include <nuttx/audio/pcm.h>
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#include <nuttx/audio/audio_null.h>
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#include "sama5d4-ek.h"
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#ifdef HAVE_AUDIO_NULL
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sam_audio_null_initialize
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*
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* Description:
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* Set up to use the NULL audio device for PCM unit-level testing.
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*
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* Input Parameters:
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* minor - The input device minor number
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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int sam_audio_null_initialize(int minor)
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{
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FAR struct audio_lowerhalf_s *nullaudio;
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FAR struct audio_lowerhalf_s *pcm;
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static bool initialized = false;
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char devname[12];
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int ret;
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auddbg("minor %d\n", minor);
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DEBUGASSERT(minor >= 0 && minor <= 25);
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/* Have we already initialized? Since we never uninitialize we must prevent
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* multiple initializations. This is necessary, for example, when the
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* touchscreen example is used as a built-in application in NSH and can be
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* called numerous time. It will attempt to initialize each time.
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*/
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if (!initialized)
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{
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/* Get a null audio interface
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*/
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nullaudio = audio_null_initialize();
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if (!nullaudio)
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{
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auddbg("Failed to get the NULL audio interface\n");
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ret = -ENODEV;
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goto errout;
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}
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/* No we can embed the null audio interface into a PCM decoder
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* instance so that we will have a PCM front end for the NULL
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* audio driver.
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*/
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pcm = pcm_decode_initialize(nullaudio);
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if (!pcm)
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{
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auddbg("ERROR: Failed create the PCM decoder\n");
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ret = -ENODEV;
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goto errout_with_nullaudio;
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}
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/* Create a device name */
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snprintf(devname, 12, "pcm%d", minor);
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/* Finally, we can register the PCM/NULL audio device. */
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ret = audio_register(devname, pcm);
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if (ret < 0)
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{
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auddbg("ERROR: Failed to register /dev/%s device: %d\n", devname, ret);
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goto errout_with_pcm;
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}
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/* Now we are initialized */
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initialized = true;
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}
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return OK;
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/* Error exits. Unfortunately there is no mechanism in place now to
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* recover resources from most errors on initialization failures.
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*/
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errout_with_nullaudio:
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errout_with_pcm:
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errout:
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return ret;
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}
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#endif /* HAVE_AUDIO_NULL */
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@ -158,7 +158,7 @@ int nsh_archinitialize(void)
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#endif
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#ifdef HAVE_WM8904
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/* Start the USB Monitor */
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/* Configure WM8904 audio */
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ret = sam_wm8904_initialize(0);
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if (ret != OK)
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@ -167,6 +167,16 @@ int nsh_archinitialize(void)
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}
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#endif
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#ifdef HAVE_AUDIO_NULL
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/* Configure the NULL audio device */
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ret = sam_audio_null_initialize(0);
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if (ret != OK)
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{
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message("ERROR: Failed to initialize the NULL audio device: %d\n", ret);
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}
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#endif
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/* If we got here then perhaps not all initialization was successful, but
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* at least enough succeeded to bring-up NSH with perhaps reduced
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* capabilities.
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@ -334,7 +334,7 @@ int sam_wm8904_initialize(int minor)
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return OK;
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/* Error exits. Unfortunately there is no mechanism in place now to
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* recover from most errors on initialization failures.
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* recover resources from most errors on initialization failures.
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*/
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errout_with_pcm:
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@ -65,6 +65,7 @@
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#define HAVE_NETWORK 1
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#define HAVE_MAXTOUCH 1
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#define HAVE_WM8904 1
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#define HAVE_AUDIO_NULL 1
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/* HSMCI */
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/* Can't support MMC/SD if the card interface(s) are not enable */
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@ -317,7 +318,7 @@
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#endif
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/* Audio */
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/* Default configuration values */
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/* PCM/WM8904 driver */
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#ifndef CONFIG_AUDIO_WM8904
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# undef HAVE_WM8904
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@ -351,6 +352,23 @@
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# endif
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#endif
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/* PCM/null driver */
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#ifndef CONFIG_AUDIO_NULL
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# undef HAVE_AUDIO_NULL
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#endif
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#ifdef HAVE_WM8904
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# undef HAVE_AUDIO_NULL
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#endif
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#ifdef HAVE_AUDIO_NULL
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# ifndef CONFIG_AUDIO_FORMAT_PCM
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# warning CONFIG_AUDIO_FORMAT_PCM is required for audio support
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# undef HAVE_AUDIO_NULL
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# endif
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#endif
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/* LEDs *****************************************************************************/
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/* There are 3 LEDs on the SAMA5D4-EK:
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*
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@ -925,6 +943,25 @@ int nsh_archinitialize(void);
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int sam_wm8904_initialize(int minor);
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#endif /* HAVE_WM8904 */
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/****************************************************************************
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* Name: sam_audio_null_initialize
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*
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* Description:
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* Set up to use the NULL audio device for PCM unit-level testing.
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*
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* Input Parameters:
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* minor - The input device minor number
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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#ifdef HAVE_AUDIO_NULL
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int sam_audio_null_initialize(int minor);
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#endif /* HAVE_AUDIO_NULL */
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#endif /* __ASSEMBLY__ */
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#endif /* __CONFIGS_SAMA5D4_EK_SRC_SAMA5D4_EK_H */
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@ -106,5 +106,57 @@ config AUDIO_WM8904
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that dependency is not explicit here.
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if AUDIO_WM8904
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config WM8904_INITVOLUME
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int "WM8904 initial volume setting"
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default 250
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config WM8904_INFLIGHT
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int "WM8904 maximum in-flight audio buffers"
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default 2
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config WM8904_MSG_PRIO
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int "WM8904 message priority"
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default 1
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config WM8904_BUFFER_SIZE
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int "WM8904 preferred buffer size"
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default 8192
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config WM8904_NUM_BUFFERS
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int "WM8904 preferred number of buffers"
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default 4
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config WM8904_WORKER_STACKSIZE
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int "WM8904 worker thread stack size"
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default 768
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endif # AUDIO_WM8904
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config AUDIO_NULL
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bool "NULL audio device"
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default n
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depends on AUDIO
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---help---
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A do-nothinig audio device driver to simplify testing of audio
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decoders.
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if AUDIO_NULL
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config AUDIO_NULL_MSG_PRIO
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int "Null audio device message priority"
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default 1
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config UDIO_NULL_BUFFER_SIZE
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int "Null audio device preferred buffer size"
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default 8192
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config AUDIO_NULL_NUM_BUFFERS
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int "Null audio device preferred number of buffers"
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default 4
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config AUDIO_NULL_WORKER_STACKSIZE
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int "Null audio device worker thread stack size"
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default 768
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endif # AUDIO_NULL
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@ -47,6 +47,10 @@ ifeq ($(CONFIG_AUDIO_WM8904),y)
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CSRCS += wm8904.c
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endif
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ifeq ($(CONFIG_AUDIO_NULL),y)
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CSRCS += audio_null.c
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endif
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ifeq ($(CONFIG_AUDIO_I2SCHAR),y)
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CSRCS += i2schar.c
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endif
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764
drivers/audio/audio_null.c
Normal file
764
drivers/audio/audio_null.c
Normal file
@ -0,0 +1,764 @@
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/****************************************************************************
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* drivers/audio/audio_null.c
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*
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* A do-nothinig audio device driver to simplify testing of audio decoders.
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*
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
|
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
|
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* distribution.
|
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* 3. Neither the name NuttX nor the names of its contributors may be
|
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* used to endorse or promote products derived from this software
|
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* without specific prior written permission.
|
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*
|
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <string.h>
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#include <errno.h>
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#include <queue.h>
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#include <debug.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/fs/ioctl.h>
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#include <nuttx/audio/audio.h>
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#include <nuttx/audio/audio_null.h>
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/****************************************************************************
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* Private Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct null_dev_s
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{
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struct audio_lowerhalf_s dev; /* Audio lower half (this device) */
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mqd_t mq; /* Message queue for receiving messages */
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char mqname[16]; /* Our message queue name */
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pthread_t threadid; /* ID of our thread */
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#ifndef CONFIG_AUDIO_EXCLUDE_STOP
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volatile bool terminate; /* True: request to terminate */
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#endif
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int null_getcaps(FAR struct audio_lowerhalf_s *dev, int type,
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FAR struct audio_caps_s *caps);
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#ifdef CONFIG_AUDIO_MULTI_SESSION
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static int null_configure(FAR struct audio_lowerhalf_s *dev,
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FAR void *session, FAR const struct audio_caps_s *caps);
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#else
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static int null_configure(FAR struct audio_lowerhalf_s *dev,
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FAR const struct audio_caps_s *caps);
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#endif
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static int null_shutdown(FAR struct audio_lowerhalf_s *dev);
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static void *null_workerthread(pthread_addr_t pvarg);
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#ifdef CONFIG_AUDIO_MULTI_SESSION
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static int null_start(FAR struct audio_lowerhalf_s *dev,
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FAR void *session);
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#else
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static int null_start(FAR struct audio_lowerhalf_s *dev);
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#endif
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#ifndef CONFIG_AUDIO_EXCLUDE_STOP
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#ifdef CONFIG_AUDIO_MULTI_SESSION
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static int null_stop(FAR struct audio_lowerhalf_s *dev,
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FAR void* session);
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#else
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static int null_stop(FAR struct audio_lowerhalf_s *dev);
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#endif
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#endif
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#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
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#ifdef CONFIG_AUDIO_MULTI_SESSION
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static int null_pause(FAR struct audio_lowerhalf_s *dev,
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FAR void* session);
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static int null_resume(FAR struct audio_lowerhalf_s *dev,
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FAR void* session);
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#else
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static int null_pause(FAR struct audio_lowerhalf_s *dev);
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static int null_resume(FAR struct audio_lowerhalf_s *dev);
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#endif
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#endif
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static int null_enqueuebuffer(FAR struct audio_lowerhalf_s *dev,
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FAR struct ap_buffer_s *apb);
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static int null_cancelbuffer(FAR struct audio_lowerhalf_s *dev,
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FAR struct ap_buffer_s *apb);
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static int null_ioctl(FAR struct audio_lowerhalf_s *dev, int cmd,
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unsigned long arg);
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#ifdef CONFIG_AUDIO_MULTI_SESSION
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static int null_reserve(FAR struct audio_lowerhalf_s *dev,
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FAR void **session);
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#else
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static int null_reserve(FAR struct audio_lowerhalf_s *dev);
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#endif
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#ifdef CONFIG_AUDIO_MULTI_SESSION
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static int null_release(FAR struct audio_lowerhalf_s *dev,
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FAR void *session);
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#else
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static int null_release(FAR struct audio_lowerhalf_s *dev);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct audio_ops_s g_audioops =
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{
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null_getcaps, /* getcaps */
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null_configure, /* configure */
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null_shutdown, /* shutdown */
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null_start, /* start */
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#ifndef CONFIG_AUDIO_EXCLUDE_STOP
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null_stop, /* stop */
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#endif
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#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
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null_pause, /* pause */
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null_resume, /* resume */
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#endif
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NULL, /* allocbuffer */
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NULL, /* freebuffer */
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null_enqueuebuffer, /* enqueue_buffer */
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null_cancelbuffer, /* cancel_buffer */
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||||
null_ioctl, /* ioctl */
|
||||
NULL, /* read */
|
||||
NULL, /* write */
|
||||
null_reserve, /* reserve */
|
||||
null_release /* release */
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_getcaps
|
||||
*
|
||||
* Description: Get the audio device capabilities
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int null_getcaps(FAR struct audio_lowerhalf_s *dev, int type,
|
||||
FAR struct audio_caps_s *caps)
|
||||
{
|
||||
audvdbg("Entry\n");
|
||||
|
||||
/* Validate the structure */
|
||||
|
||||
DEBUGASSERT(caps->ac_len >= sizeof(struct audio_caps_s));
|
||||
|
||||
/* Fill in the caller's structure based on requested info */
|
||||
|
||||
caps->ac_format[0] = 0;
|
||||
caps->ac_format[1] = 0;
|
||||
caps->ac_controls[0] = 0;
|
||||
caps->ac_controls[1] = 0;
|
||||
caps->ac_controls[2] = 0;
|
||||
caps->ac_controls[3] = 0;
|
||||
|
||||
switch (caps->ac_type)
|
||||
{
|
||||
/* Caller is querying for the types of units we support */
|
||||
|
||||
case AUDIO_TYPE_QUERY:
|
||||
|
||||
/* Provide our overall capabilities. The interfacing software
|
||||
* must then call us back for specific info for each capability.
|
||||
*/
|
||||
|
||||
caps->ac_channels = 2; /* Stereo output */
|
||||
|
||||
switch (caps->ac_subtype)
|
||||
{
|
||||
case AUDIO_TYPE_QUERY:
|
||||
/* We don't decode any formats! Only something above us in
|
||||
* the audio stream can perform decoding on our behalf.
|
||||
*/
|
||||
|
||||
/* The types of audio units we implement */
|
||||
|
||||
caps->ac_controls[0] = AUDIO_TYPE_OUTPUT | AUDIO_TYPE_FEATURE |
|
||||
AUDIO_TYPE_PROCESSING;
|
||||
|
||||
break;
|
||||
|
||||
case AUDIO_FMT_MIDI:
|
||||
/* We only support Format 0 */
|
||||
|
||||
caps->ac_controls[0] = AUDIO_SUBFMT_END;
|
||||
break;
|
||||
|
||||
default:
|
||||
caps->ac_controls[0] = AUDIO_SUBFMT_END;
|
||||
break;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
/* Provide capabilities of our OUTPUT unit */
|
||||
|
||||
case AUDIO_TYPE_OUTPUT:
|
||||
|
||||
caps->ac_channels = 2;
|
||||
|
||||
switch (caps->ac_subtype)
|
||||
{
|
||||
case AUDIO_TYPE_QUERY:
|
||||
|
||||
/* Report the Sample rates we support */
|
||||
|
||||
caps->ac_controls[0] = AUDIO_SAMP_RATE_8K | AUDIO_SAMP_RATE_11K |
|
||||
AUDIO_SAMP_RATE_16K | AUDIO_SAMP_RATE_22K |
|
||||
AUDIO_SAMP_RATE_32K | AUDIO_SAMP_RATE_44K |
|
||||
AUDIO_SAMP_RATE_48K;
|
||||
break;
|
||||
|
||||
case AUDIO_FMT_MP3:
|
||||
case AUDIO_FMT_WMA:
|
||||
case AUDIO_FMT_PCM:
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
/* Provide capabilities of our FEATURE units */
|
||||
|
||||
case AUDIO_TYPE_FEATURE:
|
||||
|
||||
/* If the sub-type is UNDEF, then report the Feature Units we support */
|
||||
|
||||
if (caps->ac_subtype == AUDIO_FU_UNDEF)
|
||||
{
|
||||
/* Fill in the ac_controls section with the Feature Units we have */
|
||||
|
||||
caps->ac_controls[0] = AUDIO_FU_VOLUME | AUDIO_FU_BASS | AUDIO_FU_TREBLE;
|
||||
caps->ac_controls[1] = AUDIO_FU_BALANCE >> 8;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* TODO: Do we need to provide specific info for the Feature Units,
|
||||
* such as volume setting ranges, etc.?
|
||||
*/
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
/* Provide capabilities of our PROCESSING unit */
|
||||
|
||||
case AUDIO_TYPE_PROCESSING:
|
||||
|
||||
switch (caps->ac_subtype)
|
||||
{
|
||||
case AUDIO_PU_UNDEF:
|
||||
|
||||
/* Provide the type of Processing Units we support */
|
||||
|
||||
caps->ac_controls[0] = AUDIO_PU_STEREO_EXTENDER;
|
||||
break;
|
||||
|
||||
case AUDIO_PU_STEREO_EXTENDER:
|
||||
|
||||
/* Provide capabilities of our Stereo Extender */
|
||||
|
||||
caps->ac_controls[0] = AUDIO_STEXT_ENABLE | AUDIO_STEXT_WIDTH;
|
||||
break;
|
||||
|
||||
default:
|
||||
|
||||
/* Other types of processing uint we don't support */
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
/* All others we don't support */
|
||||
|
||||
default:
|
||||
|
||||
/* Zero out the fields to indicate no support */
|
||||
|
||||
caps->ac_subtype = 0;
|
||||
caps->ac_channels = 0;
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
/* Return the length of the audio_caps_s struct for validation of
|
||||
* proper Audio device type.
|
||||
*/
|
||||
|
||||
audvdbg("Return %d\n", caps->ac_len);
|
||||
return caps->ac_len;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_configure
|
||||
*
|
||||
* Description:
|
||||
* Configure the audio device for the specified mode of operation.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int null_configure(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR void *session,
|
||||
FAR const struct audio_caps_s *caps)
|
||||
#else
|
||||
static int null_configure(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR const struct audio_caps_s *caps)
|
||||
#endif
|
||||
{
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_shutdown
|
||||
*
|
||||
* Description:
|
||||
* Shutdown the driver and put it in the lowest power state possible.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int null_shutdown(FAR struct audio_lowerhalf_s *dev)
|
||||
{
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_workerthread
|
||||
*
|
||||
* This is the thread that feeds data to the chip and keeps the audio
|
||||
* stream going.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void *null_workerthread(pthread_addr_t pvarg)
|
||||
{
|
||||
FAR struct null_dev_s *priv = (struct null_dev_s *) pvarg;
|
||||
struct audio_msg_s msg;
|
||||
int msglen;
|
||||
int prio;
|
||||
|
||||
audvdbg("Entry\n");
|
||||
|
||||
/* Loop as long as we are supposed to be running */
|
||||
|
||||
#ifndef CONFIG_AUDIO_EXCLUDE_STOP
|
||||
while (!priv->terminate)
|
||||
#else
|
||||
for (;;)
|
||||
#endif
|
||||
{
|
||||
/* Wait for messages from our message queue */
|
||||
|
||||
msglen = mq_receive(priv->mq, &msg, sizeof(msg), &prio);
|
||||
|
||||
/* Handle the case when we return with no message */
|
||||
|
||||
if (msglen < sizeof(struct audio_msg_s))
|
||||
{
|
||||
auddbg("ERROR: Message too small: %d\n", msglen);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Process the message */
|
||||
|
||||
switch (msg.msgId)
|
||||
{
|
||||
case AUDIO_MSG_DATA_REQUEST:
|
||||
break;
|
||||
|
||||
#ifndef CONFIG_AUDIO_EXCLUDE_STOP
|
||||
case AUDIO_MSG_STOP:
|
||||
priv->terminate = true;
|
||||
break;
|
||||
#endif
|
||||
|
||||
case AUDIO_MSG_ENQUEUE:
|
||||
break;
|
||||
|
||||
case AUDIO_MSG_COMPLETE:
|
||||
break;
|
||||
|
||||
default:
|
||||
auddbg("ERROR: Ignoring message ID %d\n", msg.msgId);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Close the message queue */
|
||||
|
||||
mq_close(priv->mq);
|
||||
mq_unlink(priv->mqname);
|
||||
priv->mq = NULL;
|
||||
|
||||
/* Send an AUDIO_MSG_COMPLETE message to the client */
|
||||
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_COMPLETE, NULL, OK, NULL);
|
||||
#else
|
||||
priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_COMPLETE, NULL, OK);
|
||||
#endif
|
||||
|
||||
audvdbg("Exit\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_start
|
||||
*
|
||||
* Description:
|
||||
* Start the configured operation (audio streaming, volume enabled, etc.).
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int null_start(FAR struct audio_lowerhalf_s *dev, FAR void *session)
|
||||
#else
|
||||
static int null_start(FAR struct audio_lowerhalf_s *dev)
|
||||
#endif
|
||||
{
|
||||
FAR struct null_dev_s *priv = (FAR struct null_dev_s *)dev;
|
||||
struct sched_param sparam;
|
||||
struct mq_attr attr;
|
||||
pthread_attr_t tattr;
|
||||
FAR void *value;
|
||||
int ret;
|
||||
|
||||
audvdbg("Entry\n");
|
||||
|
||||
/* Create a message queue for the worker thread */
|
||||
|
||||
snprintf(priv->mqname, sizeof(priv->mqname), "/tmp/%X", priv);
|
||||
|
||||
attr.mq_maxmsg = 16;
|
||||
attr.mq_msgsize = sizeof(struct audio_msg_s);
|
||||
attr.mq_curmsgs = 0;
|
||||
attr.mq_flags = 0;
|
||||
|
||||
priv->mq = mq_open(priv->mqname, O_RDWR | O_CREAT, 0644, &attr);
|
||||
if (priv->mq == NULL)
|
||||
{
|
||||
/* Error creating message queue! */
|
||||
|
||||
auddbg("ERROR: Couldn't allocate message queue\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
/* Join any old worker thread we had created to prevent a memory leak */
|
||||
|
||||
if (priv->threadid != 0)
|
||||
{
|
||||
audvdbg("Joining old thread\n");
|
||||
pthread_join(priv->threadid, &value);
|
||||
}
|
||||
|
||||
/* Start our thread for sending data to the device */
|
||||
|
||||
pthread_attr_init(&tattr);
|
||||
sparam.sched_priority = sched_get_priority_max(SCHED_FIFO) - 3;
|
||||
(void)pthread_attr_setschedparam(&tattr, &sparam);
|
||||
(void)pthread_attr_setstacksize(&tattr, CONFIG_AUDIO_NULL_WORKER_STACKSIZE);
|
||||
|
||||
audvdbg("Starting worker thread\n");
|
||||
ret = pthread_create(&priv->threadid, &tattr, null_workerthread,
|
||||
(pthread_addr_t)priv);
|
||||
if (ret != OK)
|
||||
{
|
||||
auddbg("ERROR: pthread_create failed: %d\n", ret);
|
||||
}
|
||||
else
|
||||
{
|
||||
pthread_setname_np(priv->threadid, "null audio");
|
||||
audvdbg("Created worker thread\n");
|
||||
}
|
||||
|
||||
audvdbg("Return %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_stop
|
||||
*
|
||||
* Description: Stop the configured operation (audio streaming, volume
|
||||
* disabled, etc.).
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef CONFIG_AUDIO_EXCLUDE_STOP
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int null_stop(FAR struct audio_lowerhalf_s *dev, FAR void* session)
|
||||
#else
|
||||
static int null_stop(FAR struct audio_lowerhalf_s *dev)
|
||||
#endif
|
||||
{
|
||||
FAR struct null_dev_s *priv = (FAR struct null_dev_s *)dev;
|
||||
struct audio_msg_s term_msg;
|
||||
FAR void *value;
|
||||
|
||||
/* Send a message to stop all audio streaming */
|
||||
|
||||
term_msg.msgId = AUDIO_MSG_STOP;
|
||||
term_msg.u.data = 0;
|
||||
mq_send(priv->mq, &term_msg, sizeof(term_msg), CONFIG_AUDIO_NULL_MSG_PRIO);
|
||||
|
||||
/* Join the worker thread */
|
||||
|
||||
pthread_join(priv->threadid, &value);
|
||||
priv->threadid = 0;
|
||||
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_pause
|
||||
*
|
||||
* Description: Pauses the playback.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int null_pause(FAR struct audio_lowerhalf_s *dev, FAR void* session)
|
||||
#else
|
||||
static int null_pause(FAR struct audio_lowerhalf_s *dev)
|
||||
#endif
|
||||
{
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
#endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_resume
|
||||
*
|
||||
* Description: Resumes the playback.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int null_resume(FAR struct audio_lowerhalf_s *dev, FAR void* session)
|
||||
#else
|
||||
static int null_resume(FAR struct audio_lowerhalf_s *dev)
|
||||
#endif
|
||||
{
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
#endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_enqueuebuffer
|
||||
*
|
||||
* Description: Enqueue an Audio Pipeline Buffer for playback/ processing.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int null_enqueuebuffer(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR struct ap_buffer_s *apb)
|
||||
{
|
||||
/* Take a reference */
|
||||
|
||||
apb_reference(apb);
|
||||
|
||||
/* say that we consumed all of the data */
|
||||
|
||||
apb->curbyte = apb->nbytes;
|
||||
|
||||
/* Release the reference and return success */
|
||||
|
||||
apb_free(apb);
|
||||
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_cancelbuffer
|
||||
*
|
||||
* Description: Called when an enqueued buffer is being cancelled.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int null_cancelbuffer(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR struct ap_buffer_s *apb)
|
||||
{
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_ioctl
|
||||
*
|
||||
* Description: Perform a device ioctl
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int null_ioctl(FAR struct audio_lowerhalf_s *dev, int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
#ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
|
||||
FAR struct ap_buffer_info_s *bufinfo;
|
||||
#endif
|
||||
|
||||
/* Deal with ioctls passed from the upper-half driver */
|
||||
|
||||
switch (cmd)
|
||||
{
|
||||
/* Check for AUDIOIOC_HWRESET ioctl. This ioctl is passed straight
|
||||
* through from the upper-half audio driver.
|
||||
*/
|
||||
|
||||
case AUDIOIOC_HWRESET:
|
||||
break;
|
||||
|
||||
/* Report our preferred buffer size and quantity */
|
||||
|
||||
#ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
|
||||
case AUDIOIOC_GETBUFFERINFO:
|
||||
bufinfo = (FAR struct ap_buffer_info_s *) arg;
|
||||
bufinfo->buffer_size = CONFIG_AUDIO_NULL_BUFFER_SIZE;
|
||||
bufinfo->nbuffers = CONFIG_AUDIO_NULL_NUM_BUFFERS;
|
||||
break;
|
||||
#endif
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_reserve
|
||||
*
|
||||
* Description: Reserves a session (the only one we have).
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int null_reserve(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR void **session)
|
||||
#else
|
||||
static int null_reserve(FAR struct audio_lowerhalf_s *dev)
|
||||
#endif
|
||||
{
|
||||
audvdbg("Return OK\n");
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: null_release
|
||||
*
|
||||
* Description: Releases the session (the only one we have).
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int null_release(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR void *session)
|
||||
#else
|
||||
static int null_release(FAR struct audio_lowerhalf_s *dev)
|
||||
#endif
|
||||
{
|
||||
FAR struct null_dev_s *priv = (FAR struct null_dev_s *)dev;
|
||||
void *value;
|
||||
|
||||
/* Join any old worker thread we had created to prevent a memory leak */
|
||||
|
||||
if (priv->threadid != 0)
|
||||
{
|
||||
pthread_join(priv->threadid, &value);
|
||||
priv->threadid = 0;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: audio_null_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the null audio device.
|
||||
*
|
||||
* Input Parameters:
|
||||
* i2c - An I2C driver instance
|
||||
* i2s - An I2S driver instance
|
||||
* lower - Persistent board configuration data
|
||||
*
|
||||
* Returned Value:
|
||||
* A new lower half audio interface for the NULL audio device is returned
|
||||
* on success; NULL is returned on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct audio_lowerhalf_s *audio_null_initialize(void)
|
||||
{
|
||||
FAR struct null_dev_s *priv;
|
||||
|
||||
/* Allocate the null audio device structure */
|
||||
|
||||
priv = (FAR struct null_dev_s *)kzalloc(sizeof(struct null_dev_s));
|
||||
if (priv)
|
||||
{
|
||||
/* Initialize the null audio device structure. Since we used kzalloc,
|
||||
* only the non-zero elements of the structure need to be initialized.
|
||||
*/
|
||||
|
||||
priv->dev.ops = &g_audioops;
|
||||
return &priv->dev;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
@ -95,7 +95,7 @@ struct wm8904_dev_s
|
||||
* "half" that is referred to as "lower".
|
||||
*/
|
||||
|
||||
struct audio_lowerhalf_s dev; /* WM8904 audio lower half (this drive) */
|
||||
struct audio_lowerhalf_s dev; /* WM8904 audio lower half (this device) */
|
||||
|
||||
/* Our specific driver data goes here */
|
||||
|
||||
@ -181,15 +181,10 @@ static int wm8904_stop(FAR struct audio_lowerhalf_s *dev);
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int wm8904_pause(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR void* session);
|
||||
#else
|
||||
static int wm8904_pause(FAR struct audio_lowerhalf_s *dev);
|
||||
#endif
|
||||
#endif
|
||||
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
|
||||
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
||||
static int wm8904_resume(FAR struct audio_lowerhalf_s *dev,
|
||||
FAR void* session);
|
||||
#else
|
||||
static int wm8904_pause(FAR struct audio_lowerhalf_s *dev);
|
||||
static int wm8904_resume(FAR struct audio_lowerhalf_s *dev);
|
||||
#endif
|
||||
#endif
|
||||
@ -1755,8 +1750,8 @@ static void wm8904_audio_input(FAR struct wm8904_dev_s *priv)
|
||||
* lower - Persistent board configuration data
|
||||
*
|
||||
* Returned Value:
|
||||
* A new lower half audio interface is returned for the WM8904 device is
|
||||
* returned on success; NULL is returned on failure.
|
||||
* A new lower half audio interface for the WM8904 device is returned on
|
||||
* success; NULL is returned on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
|
||||
136
include/nuttx/audio/audio_null.h
Normal file
136
include/nuttx/audio/audio_null.h
Normal file
@ -0,0 +1,136 @@
|
||||
/****************************************************************************
|
||||
* include/nuttx/audio/audio_null.h
|
||||
* A do-nothinig audio device driver to simplify testing of audio decoders.
|
||||
*
|
||||
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __INCLUDE_NUTTX_AUDIO_AUDIO_NULL_H
|
||||
#define __INCLUDE_NUTTX_AUDIO_AUDIO_NULL_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#include <nuttx/irq.h>
|
||||
|
||||
#ifdef CONFIG_AUDIO_NULL
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
/* Configuration ************************************************************
|
||||
*
|
||||
* CONFIG_AUDIO_NULL - Enabled NULL audio device support
|
||||
* CONFIG_AUDIO_NULL_MSG_PRIO - Priority of messages sent to the NULL audio
|
||||
* device worker thread.
|
||||
* CONFIG_AUDIO_NULL_BUFFER_SIZE - Preferred buffer size
|
||||
* CONFIG_AUDIO_NULL_NUM_BUFFERS - Preferred number of buffers
|
||||
* CONFIG_AUDIO_NULL_WORKER_STACKSIZE - Stack size to use when creating the
|
||||
* NULL audio device worker thread.
|
||||
*/
|
||||
|
||||
/* Pre-requisites */
|
||||
|
||||
#ifndef CONFIG_AUDIO
|
||||
# error CONFIG_AUDIO is required for audio subsystem support
|
||||
#endif
|
||||
|
||||
/* Default configuration values */
|
||||
|
||||
#ifndef CONFIG_AUDIO_NULL_MSG_PRIO
|
||||
# define CONFIG_AUDIO_NULL_MSG_PRIO 1
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_AUDIO_NULL_BUFFER_SIZE
|
||||
# define CONFIG_AUDIO_NULL_BUFFER_SIZE 8192
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_AUDIO_NULL_NUM_BUFFERS
|
||||
# define CONFIG_AUDIO_NULL_NUM_BUFFERS 4
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_AUDIO_NULL_WORKER_STACKSIZE
|
||||
# define CONFIG_AUDIO_NULL_WORKER_STACKSIZE 768
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: audio_null_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the null audio device.
|
||||
*
|
||||
* Input Parameters:
|
||||
* i2c - An I2C driver instance
|
||||
* i2s - An I2S driver instance
|
||||
* lower - Persistent board configuration data
|
||||
*
|
||||
* Returned Value:
|
||||
* A new lower half audio interface for the NULL audio device is returned
|
||||
* on success; NULL is returned on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
struct audio_lowerhalf_s; /* Forward reference. Defined in nuttx/audio/audio.h */
|
||||
|
||||
FAR struct audio_lowerhalf_s *audio_null_initialize(void);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_AUDIO_NULL */
|
||||
#endif /* __INCLUDE_NUTTX_AUDIO_AUDIO_NULL_H */
|
||||
@ -93,7 +93,7 @@
|
||||
/* Default configuration values */
|
||||
|
||||
#ifndef CONFIG_WM8904_INITVOLUME
|
||||
# define CONFIG_WM8904_INITVOLUME 250
|
||||
# define CONFIG_WM8904_INITVOLUME 250
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_WM8904_INFLIGHT
|
||||
@ -199,8 +199,8 @@ extern "C"
|
||||
* lower - Persistent board configuration data
|
||||
*
|
||||
* Returned Value:
|
||||
* A new lower half audio interface is returned for the WM8904 device is
|
||||
* returned on success; NULL is returned on failure.
|
||||
* A new lower half audio interface for the WM8904 device is returned on
|
||||
* success; NULL is returned on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user