[mirror_ubuntu-zesty-kernel.git] / include / uapi / sound / compress_offload.h

/*
 *  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;
} __attribute__((packed, aligned(4)));

/**
 * 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;
} __attribute__((packed, aligned(4)));

/**
 * 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;
} __attribute__((packed, aligned(4)));

/**
 * struct snd_compr_avail - avail descriptor
 * @avail: Number of bytes available in ring buffer for writing/reading
 * @tstamp: timestamp information
 */
struct snd_compr_avail {
	__u64 avail;
	struct snd_compr_tstamp tstamp;
} __attribute__((packed, aligned(4)));

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];
} __attribute__((packed, aligned(4)));

/**
 * 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];
} __attribute__((packed, aligned(4)));

/**
 * enum sndrv_compress_encoder
 * @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 {
	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];
} __attribute__((packed, aligned(4)));

/**
 * 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
Commit	Line	Data
e60061a3 VK	1	/*
	2	* compress_offload.h - compress offload header definations
	3	*
	4	* Copyright (C) 2011 Intel Corporation
	5	* Authors: Vinod Koul <vinod.koul@linux.intel.com>
	6	* Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
	7	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; version 2 of the License.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
	21	*
	22	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	23	*
	24	*/
	25	#ifndef __COMPRESS_OFFLOAD_H
	26	#define __COMPRESS_OFFLOAD_H
	27
	28	#include <linux/types.h>
	29	#include <sound/asound.h>
	30	#include <sound/compress_params.h>
	31
	32
6733cf57	33	#define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 1, 2)
e60061a3	34	/**
f533ccb6	35	* struct snd_compressed_buffer - compressed buffer
e60061a3 VK	36	* @fragment_size: size of buffer fragment in bytes
	37	* @fragments: number of such fragments
	38	*/
	39	struct snd_compressed_buffer {
	40	__u32 fragment_size;
	41	__u32 fragments;
2da38e0c	42	} __attribute__((packed, aligned(4)));
e60061a3 VK	43
e60061a3 VK	44	/**
f533ccb6	45	* struct snd_compr_params - compressed stream params
e60061a3 VK	46	* @buffer: buffer description
	47	* @codec: codec parameters
	48	* @no_wake_mode: dont wake on fragment elapsed
	49	*/
	50	struct snd_compr_params {
	51	struct snd_compressed_buffer buffer;
	52	struct snd_codec codec;
	53	__u8 no_wake_mode;
2da38e0c	54	} __attribute__((packed, aligned(4)));
e60061a3 VK	55
e60061a3 VK	56	/**
f533ccb6	57	* struct snd_compr_tstamp - timestamp descriptor
e60061a3 VK	58	* @byte_offset: Byte offset in ring buffer to DSP
	59	* @copied_total: Total number of bytes copied from/to ring buffer to/by DSP
	60	* @pcm_frames: Frames decoded or encoded by DSP. This field will evolve by
	61	* large steps and should only be used to monitor encoding/decoding
	62	* progress. It shall not be used for timing estimates.
	63	* @pcm_io_frames: Frames rendered or received by DSP into a mixer or an audio
	64	* output/input. This field should be used for A/V sync or time estimates.
	65	* @sampling_rate: sampling rate of audio
	66	*/
	67	struct snd_compr_tstamp {
	68	__u32 byte_offset;
	69	__u32 copied_total;
6733cf57 TI	70	__u32 pcm_frames;
6733cf57 TI	71	__u32 pcm_io_frames;
e60061a3	72	__u32 sampling_rate;
2da38e0c	73	} __attribute__((packed, aligned(4)));
e60061a3 VK	74
e60061a3 VK	75	/**
f533ccb6	76	* struct snd_compr_avail - avail descriptor
e60061a3	77	* @avail: Number of bytes available in ring buffer for writing/reading
1a6ab46f	78	* @tstamp: timestamp information
e60061a3 VK	79	*/
	80	struct snd_compr_avail {
	81	__u64 avail;
	82	struct snd_compr_tstamp tstamp;
2da38e0c	83	} __attribute__((packed, aligned(4)));
e60061a3 VK	84
	85	enum snd_compr_direction {
	86	SND_COMPRESS_PLAYBACK = 0,
	87	SND_COMPRESS_CAPTURE
	88	};
	89
	90	/**
f533ccb6	91	* struct snd_compr_caps - caps descriptor
e60061a3 VK	92	* @codecs: pointer to array of codecs
	93	* @direction: direction supported. Of type snd_compr_direction
	94	* @min_fragment_size: minimum fragment supported by DSP
	95	* @max_fragment_size: maximum fragment supported by DSP
	96	* @min_fragments: min fragments supported by DSP
	97	* @max_fragments: max fragments supported by DSP
	98	* @num_codecs: number of codecs supported
	99	* @reserved: reserved field
	100	*/
	101	struct snd_compr_caps {
	102	__u32 num_codecs;
	103	__u32 direction;
	104	__u32 min_fragment_size;
	105	__u32 max_fragment_size;
	106	__u32 min_fragments;
	107	__u32 max_fragments;
	108	__u32 codecs[MAX_NUM_CODECS];
	109	__u32 reserved[11];
2da38e0c	110	} __attribute__((packed, aligned(4)));
e60061a3 VK	111
e60061a3 VK	112	/**
f533ccb6	113	* struct snd_compr_codec_caps - query capability of codec
e60061a3 VK	114	* @codec: codec for which capability is queried
	115	* @num_descriptors: number of codec descriptors
	116	* @descriptor: array of codec capability descriptor
	117	*/
	118	struct snd_compr_codec_caps {
	119	__u32 codec;
	120	__u32 num_descriptors;
	121	struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS];
2da38e0c	122	} __attribute__((packed, aligned(4)));
e60061a3	123
9727b490	124	/**
f533ccb6	125	* enum sndrv_compress_encoder
9727b490 JK	126	* @SNDRV_COMPRESS_ENCODER_PADDING: no of samples appended by the encoder at the
	127	* end of the track
	128	* @SNDRV_COMPRESS_ENCODER_DELAY: no of samples inserted by the encoder at the
	129	* beginning of the track
	130	*/
f533ccb6	131	enum sndrv_compress_encoder {
9727b490 JK	132	SNDRV_COMPRESS_ENCODER_PADDING = 1,
	133	SNDRV_COMPRESS_ENCODER_DELAY = 2,
	134	};
	135
	136	/**
f533ccb6	137	* struct snd_compr_metadata - compressed stream metadata
9727b490 JK	138	* @key: key id
	139	* @value: key value
	140	*/
	141	struct snd_compr_metadata {
	142	__u32 key;
	143	__u32 value[8];
2da38e0c	144	} __attribute__((packed, aligned(4)));
9727b490	145
e60061a3 VK	146	/**
	147	* compress path ioctl definitions
	148	* SNDRV_COMPRESS_GET_CAPS: Query capability of DSP
	149	* SNDRV_COMPRESS_GET_CODEC_CAPS: Query capability of a codec
	150	* SNDRV_COMPRESS_SET_PARAMS: Set codec and stream parameters
	151	* Note: only codec params can be changed runtime and stream params cant be
	152	* SNDRV_COMPRESS_GET_PARAMS: Query codec params
	153	* SNDRV_COMPRESS_TSTAMP: get the current timestamp value
	154	* SNDRV_COMPRESS_AVAIL: get the current buffer avail value.
	155	* This also queries the tstamp properties
	156	* SNDRV_COMPRESS_PAUSE: Pause the running stream
	157	* SNDRV_COMPRESS_RESUME: resume a paused stream
	158	* SNDRV_COMPRESS_START: Start a stream
	159	* SNDRV_COMPRESS_STOP: stop a running stream, discarding ring buffer content
	160	* and the buffers currently with DSP
	161	* SNDRV_COMPRESS_DRAIN: Play till end of buffers and stop after that
	162	* SNDRV_COMPRESS_IOCTL_VERSION: Query the API version
	163	*/
	164	#define SNDRV_COMPRESS_IOCTL_VERSION _IOR('C', 0x00, int)
	165	#define SNDRV_COMPRESS_GET_CAPS _IOWR('C', 0x10, struct snd_compr_caps)
	166	#define SNDRV_COMPRESS_GET_CODEC_CAPS _IOWR('C', 0x11,\
	167	struct snd_compr_codec_caps)
	168	#define SNDRV_COMPRESS_SET_PARAMS _IOW('C', 0x12, struct snd_compr_params)
	169	#define SNDRV_COMPRESS_GET_PARAMS _IOR('C', 0x13, struct snd_codec)
9727b490 JK	170	#define SNDRV_COMPRESS_SET_METADATA _IOW('C', 0x14,\
	171	struct snd_compr_metadata)
	172	#define SNDRV_COMPRESS_GET_METADATA _IOWR('C', 0x15,\
	173	struct snd_compr_metadata)
e60061a3 VK	174	#define SNDRV_COMPRESS_TSTAMP _IOR('C', 0x20, struct snd_compr_tstamp)
	175	#define SNDRV_COMPRESS_AVAIL _IOR('C', 0x21, struct snd_compr_avail)
	176	#define SNDRV_COMPRESS_PAUSE _IO('C', 0x30)
	177	#define SNDRV_COMPRESS_RESUME _IO('C', 0x31)
	178	#define SNDRV_COMPRESS_START _IO('C', 0x32)
	179	#define SNDRV_COMPRESS_STOP _IO('C', 0x33)
	180	#define SNDRV_COMPRESS_DRAIN _IO('C', 0x34)
9727b490 JK	181	#define SNDRV_COMPRESS_NEXT_TRACK _IO('C', 0x35)
9727b490 JK	182	#define SNDRV_COMPRESS_PARTIAL_DRAIN _IO('C', 0x36)
e60061a3 VK	183	/*
	184	* TODO
	185	* 1. add mmap support
	186	*
	187	*/
	188	#define SND_COMPR_TRIGGER_DRAIN 7 /FIXME move this to pcm.h /
9727b490 JK	189	#define SND_COMPR_TRIGGER_NEXT_TRACK 8
9727b490 JK	190	#define SND_COMPR_TRIGGER_PARTIAL_DRAIN 9
e60061a3	191	#endif