1 /* 2 * This header was generated from the Linux kernel headers by update_headers.py, 3 * to provide necessary information from kernel to userspace, such as constants, 4 * structures, and macros, and thus, contains no copyrightable information. 5 */ 6 #ifndef __COMPRESS_OFFLOAD_H 7 #define __COMPRESS_OFFLOAD_H 8 #include <linux/types.h> 9 #include <sound/asound.h> 10 #include <sound/compress_params.h> 11 #define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 1, 2) 12 struct snd_compressed_buffer { 13 __u32 fragment_size; 14 __u32 fragments; 15 } __attribute__((packed, aligned(4))); 16 struct snd_compr_params { 17 struct snd_compressed_buffer buffer; 18 struct snd_codec codec; 19 __u8 no_wake_mode; 20 } __attribute__((packed, aligned(4))); 21 struct snd_compr_tstamp { 22 __u32 byte_offset; 23 __u32 copied_total; 24 __u32 pcm_frames; 25 __u32 pcm_io_frames; 26 __u32 sampling_rate; 27 } __attribute__((packed, aligned(4))); 28 struct snd_compr_avail { 29 __u64 avail; 30 struct snd_compr_tstamp tstamp; 31 } __attribute__((packed, aligned(4))); 32 enum snd_compr_direction { 33 SND_COMPRESS_PLAYBACK = 0, 34 SND_COMPRESS_CAPTURE 35 }; 36 struct snd_compr_caps { 37 __u32 num_codecs; 38 __u32 direction; 39 __u32 min_fragment_size; 40 __u32 max_fragment_size; 41 __u32 min_fragments; 42 __u32 max_fragments; 43 __u32 codecs[MAX_NUM_CODECS]; 44 __u32 reserved[11]; 45 } __attribute__((packed, aligned(4))); 46 struct snd_compr_codec_caps { 47 __u32 codec; 48 __u32 num_descriptors; 49 struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS]; 50 } __attribute__((packed, aligned(4))); 51 enum sndrv_compress_encoder { 52 SNDRV_COMPRESS_ENCODER_PADDING = 1, 53 SNDRV_COMPRESS_ENCODER_DELAY = 2, 54 }; 55 struct snd_compr_metadata { 56 __u32 key; 57 __u32 value[8]; 58 } __attribute__((packed, aligned(4))); 59 #define SNDRV_COMPRESS_IOCTL_VERSION _IOR('C', 0x00, int) 60 #define SNDRV_COMPRESS_GET_CAPS _IOWR('C', 0x10, struct snd_compr_caps) 61 #define SNDRV_COMPRESS_GET_CODEC_CAPS _IOWR('C', 0x11,\ 62 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,\ 66 struct snd_compr_metadata) 67 #define SNDRV_COMPRESS_GET_METADATA _IOWR('C', 0x15,\ 68 struct snd_compr_metadata) 69 #define SNDRV_COMPRESS_TSTAMP _IOR('C', 0x20, struct snd_compr_tstamp) 70 #define SNDRV_COMPRESS_AVAIL _IOR('C', 0x21, struct snd_compr_avail) 71 #define SNDRV_COMPRESS_PAUSE _IO('C', 0x30) 72 #define SNDRV_COMPRESS_RESUME _IO('C', 0x31) 73 #define SNDRV_COMPRESS_START _IO('C', 0x32) 74 #define SNDRV_COMPRESS_STOP _IO('C', 0x33) 75 #define SNDRV_COMPRESS_DRAIN _IO('C', 0x34) 76 #define SNDRV_COMPRESS_NEXT_TRACK _IO('C', 0x35) 77 #define SNDRV_COMPRESS_PARTIAL_DRAIN _IO('C', 0x36) 78 #define SND_COMPR_TRIGGER_DRAIN 7 79 #define SND_COMPR_TRIGGER_NEXT_TRACK 8 80 #define SND_COMPR_TRIGGER_PARTIAL_DRAIN 9 81 #endif 82