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ALSA: compress: fix the struct alignment to 4 bytes

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In 64bit systems the compiler can default align to 8bytes causing mis-match with
32bit usermode. Avoid this is future by ensuring all the structures shared with
usermode are packed and aligned to 4 bytes irrespective of arch used

[coding style fixes by tiwai]

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Vinod Koul 2014-06-19 14:41:00 +05:30 committed by Takashi Iwai
parent 8d42fda9ea
commit 2da38e0c94
2 changed files with 14 additions and 14 deletions
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14
include/uapi/sound/compress_offload.h
View File

@ -39,7 +39,7 @@
struct snd_compressed_buffer {
__u32 fragment_size;
__u32 fragments;
};
} __attribute__((packed, aligned(4)));
/**
* struct snd_compr_params: compressed stream params
@ -51,7 +51,7 @@ struct snd_compr_params {
struct snd_compressed_buffer buffer;
struct snd_codec codec;
__u8 no_wake_mode;
};
} __attribute__((packed, aligned(4)));
/**
* struct snd_compr_tstamp: timestamp descriptor
@ -70,7 +70,7 @@ struct snd_compr_tstamp {
__u32 pcm_frames;
__u32 pcm_io_frames;
__u32 sampling_rate;
};
} __attribute__((packed, aligned(4)));
/**
* struct snd_compr_avail: avail descriptor
@ -80,7 +80,7 @@ struct snd_compr_tstamp {
struct snd_compr_avail {
__u64 avail;
struct snd_compr_tstamp tstamp;
} __attribute__((packed));
} __attribute__((packed, aligned(4)));
enum snd_compr_direction {
SND_COMPRESS_PLAYBACK = 0,
@ -107,7 +107,7 @@ struct snd_compr_caps {
__u32 max_fragments;
__u32 codecs[MAX_NUM_CODECS];
__u32 reserved[11];
};
} __attribute__((packed, aligned(4)));
/**
* struct snd_compr_codec_caps: query capability of codec
@ -119,7 +119,7 @@ struct snd_compr_codec_caps {
__u32 codec;
__u32 num_descriptors;
struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS];
};
} __attribute__((packed, aligned(4)));
/**
* @SNDRV_COMPRESS_ENCODER_PADDING: no of samples appended by the encoder at the
@ -140,7 +140,7 @@ enum {
struct snd_compr_metadata {
__u32 key;
__u32 value[8];
};
} __attribute__((packed, aligned(4)));
/**
* compress path ioctl definitions

14
include/uapi/sound/compress_params.h
View File

@ -268,7 +268,7 @@ struct snd_enc_vorbis {
__u32 max_bit_rate;
__u32 min_bit_rate;
__u32 downmix;
};
} __attribute__((packed, aligned(4)));
/**
@ -284,7 +284,7 @@ struct snd_enc_real {
__u32 quant_bits;
__u32 start_region;
__u32 num_regions;
};
} __attribute__((packed, aligned(4)));
/**
* struct snd_enc_flac
@ -308,12 +308,12 @@ struct snd_enc_real {
struct snd_enc_flac {
__u32 num;
__u32 gain;
};
} __attribute__((packed, aligned(4)));
struct snd_enc_generic {
__u32 bw; /* encoder bandwidth */
__s32 reserved[15];
};
} __attribute__((packed, aligned(4)));
union snd_codec_options {
struct snd_enc_wma wma;
@ -321,7 +321,7 @@ union snd_codec_options {
struct snd_enc_real real;
struct snd_enc_flac flac;
struct snd_enc_generic generic;
};
} __attribute__((packed, aligned(4)));
/** struct snd_codec_desc - description of codec capabilities
* @max_ch: Maximum number of audio channels
@ -358,7 +358,7 @@ struct snd_codec_desc {
__u32 formats;
__u32 min_buffer;
__u32 reserved[15];
};
} __attribute__((packed, aligned(4)));
/** struct snd_codec
* @id: Identifies the supported audio encoder/decoder.
@ -399,6 +399,6 @@ struct snd_codec {
__u32 align;
union snd_codec_options options;
__u32 reserved[3];
};
} __attribute__((packed, aligned(4)));
#endif