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authorVinod Koul <vkoul@kernel.org>2019-11-15 15:57:03 +0530
committerMark Brown <broonie@kernel.org>2019-11-18 13:02:25 +0000
commitd2522335c92c090bf58531a2b696d7fe80ab2a7a (patch)
treeb83d5385f1c4ad60ee2e365c7896bf438cb1170f /include/uapi/sound
parenta3b9ed55775eb18ca9f1641f13328f479a3653cb (diff)
ALSA: compress: add flac decoder params
The current design of sending codec parameters assumes that decoders will have parsers so they can parse the encoded stream for parameters and configure the decoder. But this assumption may not be universally true and we know some DSPs which do not contain the parsers so additional parameters are required to be passed. So add these parameters starting with FLAC decoder. The size of snd_codec_options is still 120 bytes after this change (due to this being a union) Co-developed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20191115102705.649976-2-vkoul@kernel.org Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/uapi/sound')
-rw-r--r--include/uapi/sound/compress_params.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/uapi/sound/compress_params.h b/include/uapi/sound/compress_params.h
index 3d4d6de66a17..9c96fb0e4d90 100644
--- a/include/uapi/sound/compress_params.h
+++ b/include/uapi/sound/compress_params.h
@@ -317,12 +317,22 @@ struct snd_enc_generic {
__s32 reserved[15]; /* Can be used for SND_AUDIOCODEC_BESPOKE */
} __attribute__((packed, aligned(4)));
+struct snd_dec_flac {
+ __u16 sample_size;
+ __u16 min_blk_size;
+ __u16 max_blk_size;
+ __u16 min_frame_size;
+ __u16 max_frame_size;
+ __u16 reserved;
+} __attribute__((packed, aligned(4)));
+
union snd_codec_options {
struct snd_enc_wma wma;
struct snd_enc_vorbis vorbis;
struct snd_enc_real real;
struct snd_enc_flac flac;
struct snd_enc_generic generic;
+ struct snd_dec_flac flac_d;
} __attribute__((packed, aligned(4)));
/** struct snd_codec_desc - description of codec capabilities