struct_snd_enc_flac – Synopsis struct snd_enc_flac { __u32 num; __u32 gain; }; Members num serial number, valid only for OGG formats needs to be set by application gain Add replay gain tags Description These options were extracted from the FLAC online documentation at http://flac.sourceforge.net/documentation_tools_flac.html To make the API simpler, it is assumed that the user will…
struct_snd_dmaengine_pcm_config – Configuration data for dmaengine based PCM Synopsis struct snd_dmaengine_pcm_config { int (*prepare_slave_config)(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config); struct dma_chan *(*compat_request_channel)(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream); dma_filter_fn compat_filter_fn; struct device *dma_dev; const char *chan_names[SNDRV_PCM_STREAM_LAST + 1]; const struct snd_pcm_hardware *pcm_hardware; unsigned int prealloc_buffer_size; }; Members prepare_slave_config Callback used to fill in…
struct_snd_dmaengine_dai_dma_data – DAI DMA configuration data Synopsis struct snd_dmaengine_dai_dma_data { dma_addr_t addr; enum dma_slave_buswidth addr_width; u32 maxburst; unsigned int slave_id; void *filter_data; const char *chan_name; unsigned int fifo_size; unsigned int flags; }; Members addr Address of the DAI data source or destination register. addr_width Width of the DAI data source or destination register. maxburst Maximum…
struct_snd_compressed_buffer – compressed buffer Synopsis struct snd_compressed_buffer { __u32 fragment_size; __u32 fragments; }; Members fragment_size size of buffer fragment in bytes fragments number of such fragments Copyright
struct_snd_compr_tstamp – timestamp descriptor Synopsis struct snd_compr_tstamp { __u32 byte_offset; __u32 copied_total; __u32 pcm_frames; __u32 pcm_io_frames; __u32 sampling_rate; }; Members 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…
struct_snd_compr_stream – Synopsis struct snd_compr_stream { const char *name; struct snd_compr_ops *ops; struct snd_compr_runtime *runtime; struct snd_compr *device; struct delayed_work error_work; enum snd_compr_direction direction; bool metadata_set; bool next_track; void *private_data; }; Members name device name ops pointer to DSP callbacks runtime pointer to runtime structure device device pointer error_work delayed work used when closing the…
struct_snd_compr_runtime – Synopsis struct snd_compr_runtime { snd_pcm_state_t state; struct snd_compr_ops *ops; void *buffer; u64 buffer_size; u32 fragment_size; u32 fragments; u64 total_bytes_available; u64 total_bytes_transferred; wait_queue_head_t sleep; void *private_data; }; Members state stream state ops pointer to DSP callbacks buffer pointer to kernel buffer, valid only when not in mmap mode or DSP doesn’t implement copy buffer_size…
struct_snd_compr_params – compressed stream params Synopsis struct snd_compr_params { struct snd_compressed_buffer buffer; struct snd_codec codec; __u8 no_wake_mode; }; Members buffer buffer description codec codec parameters no_wake_mode dont wake on fragment elapsed Copyright
struct_snd_compr_ops – Synopsis struct snd_compr_ops { int (*open)(struct snd_compr_stream *stream); int (*free)(struct snd_compr_stream *stream); int (*set_params)(struct snd_compr_stream *stream, struct snd_compr_params *params); int (*get_params)(struct snd_compr_stream *stream, struct snd_codec *params); int (*set_metadata)(struct snd_compr_stream *stream, struct snd_compr_metadata *metadata); int (*get_metadata)(struct snd_compr_stream *stream, struct snd_compr_metadata *metadata); int (*trigger)(struct snd_compr_stream *stream, int cmd); int (*pointer)(struct snd_compr_stream *stream, struct snd_compr_tstamp *tstamp);…
struct_snd_compr_metadata – compressed stream metadata Synopsis struct snd_compr_metadata { __u32 key; __u32 value[8]; }; Members key key id value[8] key value Copyright
struct_snd_compr_codec_caps – query capability of codec Synopsis struct snd_compr_codec_caps { __u32 codec; __u32 num_descriptors; struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS]; }; Members codec codec for which capability is queried num_descriptors number of codec descriptors descriptor[MAX_NUM_CODEC_DESCRIPTORS] array of codec capability descriptor Copyright
struct_snd_compr_caps – caps descriptor Synopsis 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]; }; Members num_codecs number of codecs supported 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…
struct_snd_compr_avail – avail descriptor Synopsis struct snd_compr_avail { __u64 avail; struct snd_compr_tstamp tstamp; }; Members avail Number of bytes available in ring buffer for writing/reading tstamp timestamp information Copyright
struct_snd_compr – Synopsis struct snd_compr { const char *name; struct device dev; struct snd_compr_ops *ops; void *private_data; struct snd_card *card; unsigned int direction; struct mutex lock; int device; #ifdef CONFIG_SND_VERBOSE_PROCFS #endif }; Members name DSP device name dev associated device instance ops pointer to DSP callbacks private_data pointer to DSP pvt data card sound card…
struct_skb_shared_hwtstamps – hardware time stamps Synopsis struct skb_shared_hwtstamps { ktime_t hwtstamp; }; Members hwtstamp hardware time stamp transformed into duration since arbitrary point in time Description Software time stamps generated by ktime_get_real are stored in skb->tstamp. hwtstamps can only be compared against other hwtstamps from the same device. This structure is attached to packets as…
struct_skb_mstamp – multi resolution time stamps Synopsis struct skb_mstamp { union { unnamed_union }; }; Members {unnamed_union} anonymous Copyright
struct_sk_buff – socket buffer Synopsis struct sk_buff { union { unnamed_union }; __u16 inner_transport_header; __u16 inner_network_header; __u16 inner_mac_header; __be16 protocol; __u16 transport_header; __u16 network_header; __u16 mac_header; sk_buff_data_t tail; sk_buff_data_t end; unsigned char *head; unsigned char *data; unsigned int truesize; atomic_t users; }; Members {unnamed_union} anonymous inner_transport_header Inner transport layer header (encapsulation) inner_network_header Network layer header…
struct_shash_alg – synchronous message digest definition Synopsis struct shash_alg { int (*init)(struct shash_desc *desc); int (*update)(struct shash_desc *desc, const u8 *data, unsigned int len); int (*final)(struct shash_desc *desc, u8 *out); int (*finup)(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); int (*digest)(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); int…
struct_rs_control – rs control structure Synopsis struct rs_control { int mm; int nn; uint16_t *alpha_to; uint16_t *index_of; uint16_t *genpoly; int nroots; int fcr; int prim; int iprim; int gfpoly; int (*gffunc)(int); int users; struct list_head list; }; Members mm Bits per symbol nn Symbols per block (= (1<<mm)-1) alpha_to log lookup table index_of Antilog lookup…
struct_rng_alg – random number generator definition Synopsis struct rng_alg { int (*generate)(struct crypto_rng *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int dlen); int (*seed)(struct crypto_rng *tfm, const u8 *seed, unsigned int slen); void (*set_ent)(struct crypto_rng *tfm, const u8 *data, unsigned int len); unsigned int seedsize; struct crypto_alg base; }; Members generate The…