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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 | |
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 | |
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; |
71 | __u32 pcm_io_frames; | |
e60061a3 | 72 | __u32 sampling_rate; |
2da38e0c | 73 | } __attribute__((packed, aligned(4))); |
e60061a3 VK |
74 | |
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 | |
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) |
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 |
190 | #define SND_COMPR_TRIGGER_PARTIAL_DRAIN 9 | |
e60061a3 | 191 | #endif |