1 /*
2  * This file is auto-generated. Modifications will be lost.
3  *
4  * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/
5  * for more information.
6  */
7 #ifndef __COMPRESS_OFFLOAD_H
8 #define __COMPRESS_OFFLOAD_H
9 #include <linux/types.h>
10 #include <sound/asound.h>
11 #include <sound/compress_params.h>
12 #define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 2, 0)
13 struct snd_compressed_buffer {
14   __u32 fragment_size;
15   __u32 fragments;
16 } __attribute__((packed, aligned(4)));
17 struct snd_compr_params {
18   struct snd_compressed_buffer buffer;
19   struct snd_codec codec;
20   __u8 no_wake_mode;
21 } __attribute__((packed, aligned(4)));
22 struct snd_compr_tstamp {
23   __u32 byte_offset;
24   __u32 copied_total;
25   __u32 pcm_frames;
26   __u32 pcm_io_frames;
27   __u32 sampling_rate;
28 } __attribute__((packed, aligned(4)));
29 struct snd_compr_avail {
30   __u64 avail;
31   struct snd_compr_tstamp tstamp;
32 } __attribute__((packed, aligned(4)));
33 enum snd_compr_direction {
34   SND_COMPRESS_PLAYBACK = 0,
35   SND_COMPRESS_CAPTURE
36 };
37 struct snd_compr_caps {
38   __u32 num_codecs;
39   __u32 direction;
40   __u32 min_fragment_size;
41   __u32 max_fragment_size;
42   __u32 min_fragments;
43   __u32 max_fragments;
44   __u32 codecs[MAX_NUM_CODECS];
45   __u32 reserved[11];
46 } __attribute__((packed, aligned(4)));
47 struct snd_compr_codec_caps {
48   __u32 codec;
49   __u32 num_descriptors;
50   struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS];
51 } __attribute__((packed, aligned(4)));
52 enum sndrv_compress_encoder {
53   SNDRV_COMPRESS_ENCODER_PADDING = 1,
54   SNDRV_COMPRESS_ENCODER_DELAY = 2,
55 };
56 struct snd_compr_metadata {
57   __u32 key;
58   __u32 value[8];
59 } __attribute__((packed, aligned(4)));
60 #define SNDRV_COMPRESS_IOCTL_VERSION _IOR('C', 0x00, int)
61 #define SNDRV_COMPRESS_GET_CAPS _IOWR('C', 0x10, struct snd_compr_caps)
62 #define SNDRV_COMPRESS_GET_CODEC_CAPS _IOWR('C', 0x11, struct snd_compr_codec_caps)
63 #define SNDRV_COMPRESS_SET_PARAMS _IOW('C', 0x12, struct snd_compr_params)
64 #define SNDRV_COMPRESS_GET_PARAMS _IOR('C', 0x13, struct snd_codec)
65 #define SNDRV_COMPRESS_SET_METADATA _IOW('C', 0x14, struct snd_compr_metadata)
66 #define SNDRV_COMPRESS_GET_METADATA _IOWR('C', 0x15, struct snd_compr_metadata)
67 #define SNDRV_COMPRESS_TSTAMP _IOR('C', 0x20, struct snd_compr_tstamp)
68 #define SNDRV_COMPRESS_AVAIL _IOR('C', 0x21, struct snd_compr_avail)
69 #define SNDRV_COMPRESS_PAUSE _IO('C', 0x30)
70 #define SNDRV_COMPRESS_RESUME _IO('C', 0x31)
71 #define SNDRV_COMPRESS_START _IO('C', 0x32)
72 #define SNDRV_COMPRESS_STOP _IO('C', 0x33)
73 #define SNDRV_COMPRESS_DRAIN _IO('C', 0x34)
74 #define SNDRV_COMPRESS_NEXT_TRACK _IO('C', 0x35)
75 #define SNDRV_COMPRESS_PARTIAL_DRAIN _IO('C', 0x36)
76 #define SND_COMPR_TRIGGER_DRAIN 7
77 #define SND_COMPR_TRIGGER_NEXT_TRACK 8
78 #define SND_COMPR_TRIGGER_PARTIAL_DRAIN 9
79 #endif
80