191 lines
6.2 KiB
C
191 lines
6.2 KiB
C
/*
|
|
* compress_offload.h - compress offload header definations
|
|
*
|
|
* Copyright (C) 2011 Intel Corporation
|
|
* Authors: Vinod Koul <vinod.koul@linux.intel.com>
|
|
* Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*
|
|
* 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; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*
|
|
*/
|
|
#ifndef __COMPRESS_OFFLOAD_H
|
|
#define __COMPRESS_OFFLOAD_H
|
|
|
|
#include <linux/types.h>
|
|
#include <sound/asound.h>
|
|
#include <sound/compress_params.h>
|
|
|
|
|
|
#define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 1, 2)
|
|
/**
|
|
* struct snd_compressed_buffer: compressed buffer
|
|
* @fragment_size: size of buffer fragment in bytes
|
|
* @fragments: number of such fragments
|
|
*/
|
|
struct snd_compressed_buffer {
|
|
__u32 fragment_size;
|
|
__u32 fragments;
|
|
};
|
|
|
|
/**
|
|
* struct snd_compr_params: compressed stream params
|
|
* @buffer: buffer description
|
|
* @codec: codec parameters
|
|
* @no_wake_mode: dont wake on fragment elapsed
|
|
*/
|
|
struct snd_compr_params {
|
|
struct snd_compressed_buffer buffer;
|
|
struct snd_codec codec;
|
|
__u8 no_wake_mode;
|
|
};
|
|
|
|
/**
|
|
* struct snd_compr_tstamp: timestamp descriptor
|
|
* @byte_offset: Byte offset in ring buffer to DSP
|
|
* @copied_total: Total number of bytes copied from/to ring buffer to/by DSP
|
|
* @pcm_frames: Frames decoded or encoded by DSP. This field will evolve by
|
|
* large steps and should only be used to monitor encoding/decoding
|
|
* progress. It shall not be used for timing estimates.
|
|
* @pcm_io_frames: Frames rendered or received by DSP into a mixer or an audio
|
|
* output/input. This field should be used for A/V sync or time estimates.
|
|
* @sampling_rate: sampling rate of audio
|
|
*/
|
|
struct snd_compr_tstamp {
|
|
__u32 byte_offset;
|
|
__u32 copied_total;
|
|
__u32 pcm_frames;
|
|
__u32 pcm_io_frames;
|
|
__u32 sampling_rate;
|
|
};
|
|
|
|
/**
|
|
* struct snd_compr_avail: avail descriptor
|
|
* @avail: Number of bytes available in ring buffer for writing/reading
|
|
* @tstamp: timestamp infomation
|
|
*/
|
|
struct snd_compr_avail {
|
|
__u64 avail;
|
|
struct snd_compr_tstamp tstamp;
|
|
};
|
|
|
|
enum snd_compr_direction {
|
|
SND_COMPRESS_PLAYBACK = 0,
|
|
SND_COMPRESS_CAPTURE
|
|
};
|
|
|
|
/**
|
|
* struct snd_compr_caps: caps descriptor
|
|
* @codecs: pointer to array of codecs
|
|
* @direction: direction supported. Of type snd_compr_direction
|
|
* @min_fragment_size: minimum fragment supported by DSP
|
|
* @max_fragment_size: maximum fragment supported by DSP
|
|
* @min_fragments: min fragments supported by DSP
|
|
* @max_fragments: max fragments supported by DSP
|
|
* @num_codecs: number of codecs supported
|
|
* @reserved: reserved field
|
|
*/
|
|
struct snd_compr_caps {
|
|
__u32 num_codecs;
|
|
__u32 direction;
|
|
__u32 min_fragment_size;
|
|
__u32 max_fragment_size;
|
|
__u32 min_fragments;
|
|
__u32 max_fragments;
|
|
__u32 codecs[MAX_NUM_CODECS];
|
|
__u32 reserved[11];
|
|
};
|
|
|
|
/**
|
|
* struct snd_compr_codec_caps: query capability of codec
|
|
* @codec: codec for which capability is queried
|
|
* @num_descriptors: number of codec descriptors
|
|
* @descriptor: array of codec capability descriptor
|
|
*/
|
|
struct snd_compr_codec_caps {
|
|
__u32 codec;
|
|
__u32 num_descriptors;
|
|
struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS];
|
|
};
|
|
|
|
/**
|
|
* @SNDRV_COMPRESS_ENCODER_PADDING: no of samples appended by the encoder at the
|
|
* end of the track
|
|
* @SNDRV_COMPRESS_ENCODER_DELAY: no of samples inserted by the encoder at the
|
|
* beginning of the track
|
|
*/
|
|
enum {
|
|
SNDRV_COMPRESS_ENCODER_PADDING = 1,
|
|
SNDRV_COMPRESS_ENCODER_DELAY = 2,
|
|
};
|
|
|
|
/**
|
|
* struct snd_compr_metadata: compressed stream metadata
|
|
* @key: key id
|
|
* @value: key value
|
|
*/
|
|
struct snd_compr_metadata {
|
|
__u32 key;
|
|
__u32 value[8];
|
|
};
|
|
|
|
/**
|
|
* compress path ioctl definitions
|
|
* SNDRV_COMPRESS_GET_CAPS: Query capability of DSP
|
|
* SNDRV_COMPRESS_GET_CODEC_CAPS: Query capability of a codec
|
|
* SNDRV_COMPRESS_SET_PARAMS: Set codec and stream parameters
|
|
* Note: only codec params can be changed runtime and stream params cant be
|
|
* SNDRV_COMPRESS_GET_PARAMS: Query codec params
|
|
* SNDRV_COMPRESS_TSTAMP: get the current timestamp value
|
|
* SNDRV_COMPRESS_AVAIL: get the current buffer avail value.
|
|
* This also queries the tstamp properties
|
|
* SNDRV_COMPRESS_PAUSE: Pause the running stream
|
|
* SNDRV_COMPRESS_RESUME: resume a paused stream
|
|
* SNDRV_COMPRESS_START: Start a stream
|
|
* SNDRV_COMPRESS_STOP: stop a running stream, discarding ring buffer content
|
|
* and the buffers currently with DSP
|
|
* SNDRV_COMPRESS_DRAIN: Play till end of buffers and stop after that
|
|
* SNDRV_COMPRESS_IOCTL_VERSION: Query the API version
|
|
*/
|
|
#define SNDRV_COMPRESS_IOCTL_VERSION _IOR('C', 0x00, int)
|
|
#define SNDRV_COMPRESS_GET_CAPS _IOWR('C', 0x10, struct snd_compr_caps)
|
|
#define SNDRV_COMPRESS_GET_CODEC_CAPS _IOWR('C', 0x11,\
|
|
struct snd_compr_codec_caps)
|
|
#define SNDRV_COMPRESS_SET_PARAMS _IOW('C', 0x12, struct snd_compr_params)
|
|
#define SNDRV_COMPRESS_GET_PARAMS _IOR('C', 0x13, struct snd_codec)
|
|
#define SNDRV_COMPRESS_SET_METADATA _IOW('C', 0x14,\
|
|
struct snd_compr_metadata)
|
|
#define SNDRV_COMPRESS_GET_METADATA _IOWR('C', 0x15,\
|
|
struct snd_compr_metadata)
|
|
#define SNDRV_COMPRESS_TSTAMP _IOR('C', 0x20, struct snd_compr_tstamp)
|
|
#define SNDRV_COMPRESS_AVAIL _IOR('C', 0x21, struct snd_compr_avail)
|
|
#define SNDRV_COMPRESS_PAUSE _IO('C', 0x30)
|
|
#define SNDRV_COMPRESS_RESUME _IO('C', 0x31)
|
|
#define SNDRV_COMPRESS_START _IO('C', 0x32)
|
|
#define SNDRV_COMPRESS_STOP _IO('C', 0x33)
|
|
#define SNDRV_COMPRESS_DRAIN _IO('C', 0x34)
|
|
#define SNDRV_COMPRESS_NEXT_TRACK _IO('C', 0x35)
|
|
#define SNDRV_COMPRESS_PARTIAL_DRAIN _IO('C', 0x36)
|
|
/*
|
|
* TODO
|
|
* 1. add mmap support
|
|
*
|
|
*/
|
|
#define SND_COMPR_TRIGGER_DRAIN 7 /*FIXME move this to pcm.h */
|
|
#define SND_COMPR_TRIGGER_NEXT_TRACK 8
|
|
#define SND_COMPR_TRIGGER_PARTIAL_DRAIN 9
|
|
#endif
|