sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Add definitions to support fast forward and rewind configuration

Browse Source
This commit is contained in:
Gregory Nutt 2014-07-27 12:25:40 -06:00
parent bb054b8f27
commit 0cc9b06eca
2 changed files with 15 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
include/nuttx/audio/audio.h
View File

@ -76,7 +76,7 @@
/* The Audio module uses a standard character driver framework. However, a
* lot of the Audio driver functionality is configured via a device control
* interface, such as sampling rate, volume, data format, etc.
* The Audio ioctl commands are lised below:
* The Audio ioctl commands are listed below:
*
* AUDIOIOC_GETCAPS - Get the Audio Device Capabilities
*
@ -193,6 +193,17 @@
#define AUDIO_SAMP_RATE_172K 0x0400
#define AUDIO_SAMP_RATE_192K 0x0800
/* Audio Sub-sampling Ratios ***********************************************/
#define AUDIO_SUBSAMPLE_NONE 0
#define AUDIO_SUBSAMPLE_2X 2
#define AUDIO_SUBSAMPLE_4X 4
#define AUDIO_SUBSAMPLE_8X 5
#define AUDIO_SUBSAMPLE_16X 16
#define AUDIO_SUBSAMPLE_MIN AUDIO_SUBSAMPLE_2X
#define AUDIO_SUBSAMPLE_MAX AUDIO_SUBSAMPLE_16X
/* Supported Bit Rates *************************************************/
#define AUDIO_BIT_RATE_22K 0x01
@ -230,6 +241,8 @@
#define AUDIO_PU_UPDOWNMIX 0x01
#define AUDIO_PU_DOLBY_PROLOGIC 0x02
#define AUDIO_PU_STEREO_EXTENDER 0x03
#define AUDIO_PU_SUBSAMPLE_FORWARD 0x04
#define AUDIO_PU_SUBSAMPLE_REWIND 0x05
/* Stereo Extender PU Controls **********************************************/
@ -283,18 +296,6 @@
/****************************************************************************
* Public Types
****************************************************************************/
/* Fast-forward and rewind by sub-sampling may be supported. If so, then
* this enumeration specifies the sub-sampling:
*/
enum nxplayer_subsample_e
{
SUBSAMPLE_1X = 0, /* Normal speed (no direction change) */
SUBSAMPLE_2X,
SUBSAMPLE_4X,
SUBSAMPLE_8X,
SUBSAMPLE_16X
};
/* Define the size of AP Buffer sample count base on CONFIG */