1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef __COMPRESS_OFFLOAD_H 20 #define __COMPRESS_OFFLOAD_H 21 #include <linux/types.h> 22 #include <sound/asound.h> 23 #include <sound/compress_params.h> 24 #define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 2, 0) 25 struct snd_compressed_buffer { 26 __u32 fragment_size; 27 __u32 fragments; 28 } __attribute__((packed, aligned(4))); 29 struct snd_compr_params { 30 struct snd_compressed_buffer buffer; 31 struct snd_codec codec; 32 __u8 no_wake_mode; 33 } __attribute__((packed, aligned(4))); 34 struct snd_compr_tstamp { 35 __u32 byte_offset; 36 __u32 copied_total; 37 __u32 pcm_frames; 38 __u32 pcm_io_frames; 39 __u32 sampling_rate; 40 } __attribute__((packed, aligned(4))); 41 struct snd_compr_avail { 42 __u64 avail; 43 struct snd_compr_tstamp tstamp; 44 } __attribute__((packed, aligned(4))); 45 enum snd_compr_direction { 46 SND_COMPRESS_PLAYBACK = 0, 47 SND_COMPRESS_CAPTURE 48 }; 49 struct snd_compr_caps { 50 __u32 num_codecs; 51 __u32 direction; 52 __u32 min_fragment_size; 53 __u32 max_fragment_size; 54 __u32 min_fragments; 55 __u32 max_fragments; 56 __u32 codecs[MAX_NUM_CODECS]; 57 __u32 reserved[11]; 58 } __attribute__((packed, aligned(4))); 59 struct snd_compr_codec_caps { 60 __u32 codec; 61 __u32 num_descriptors; 62 struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS]; 63 } __attribute__((packed, aligned(4))); 64 enum sndrv_compress_encoder { 65 SNDRV_COMPRESS_ENCODER_PADDING = 1, 66 SNDRV_COMPRESS_ENCODER_DELAY = 2, 67 }; 68 struct snd_compr_metadata { 69 __u32 key; 70 __u32 value[8]; 71 } __attribute__((packed, aligned(4))); 72 #define SNDRV_COMPRESS_IOCTL_VERSION _IOR('C', 0x00, int) 73 #define SNDRV_COMPRESS_GET_CAPS _IOWR('C', 0x10, struct snd_compr_caps) 74 #define SNDRV_COMPRESS_GET_CODEC_CAPS _IOWR('C', 0x11, struct snd_compr_codec_caps) 75 #define SNDRV_COMPRESS_SET_PARAMS _IOW('C', 0x12, struct snd_compr_params) 76 #define SNDRV_COMPRESS_GET_PARAMS _IOR('C', 0x13, struct snd_codec) 77 #define SNDRV_COMPRESS_SET_METADATA _IOW('C', 0x14, struct snd_compr_metadata) 78 #define SNDRV_COMPRESS_GET_METADATA _IOWR('C', 0x15, struct snd_compr_metadata) 79 #define SNDRV_COMPRESS_TSTAMP _IOR('C', 0x20, struct snd_compr_tstamp) 80 #define SNDRV_COMPRESS_AVAIL _IOR('C', 0x21, struct snd_compr_avail) 81 #define SNDRV_COMPRESS_PAUSE _IO('C', 0x30) 82 #define SNDRV_COMPRESS_RESUME _IO('C', 0x31) 83 #define SNDRV_COMPRESS_START _IO('C', 0x32) 84 #define SNDRV_COMPRESS_STOP _IO('C', 0x33) 85 #define SNDRV_COMPRESS_DRAIN _IO('C', 0x34) 86 #define SNDRV_COMPRESS_NEXT_TRACK _IO('C', 0x35) 87 #define SNDRV_COMPRESS_PARTIAL_DRAIN _IO('C', 0x36) 88 #define SND_COMPR_TRIGGER_DRAIN 7 89 #define SND_COMPR_TRIGGER_NEXT_TRACK 8 90 #define SND_COMPR_TRIGGER_PARTIAL_DRAIN 9 91 #endif 92