diff options
| author | Iliyan Malchev <malchev@google.com> | 2010-08-11 18:19:47 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2010-10-06 16:27:38 -0700 |
| commit | dada76ee1116155b3195c7dee63332ba74be6cb8 (patch) | |
| tree | 729152cefdf50d121ed560c00682f1cc16810218 /include | |
| parent | aa52607a901122ad91ea69de479d420e4910f072 (diff) | |
[ARM] tegra_i2s_audio: add software downsampling for recorded data + fixes
downsampling:
-- add ioctl()s to downsample recorded data
-- supported frequencies are 8kHz, 11.025kHz, 22.05kHz, and 44.1kHz
-- downsamping to stereo and mono
-- default is 11.025kHz mono
fixes:
-- fix crashes from dequeuing DMA requests twice
Signed-off-by: Iliyan Malchev <malchev@google.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tegra_audio.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/tegra_audio.h b/include/linux/tegra_audio.h index 25bf3af611e3..9dc11cc8b871 100644 --- a/include/linux/tegra_audio.h +++ b/include/linux/tegra_audio.h @@ -26,4 +26,14 @@ #define TEGRA_AUDIO_IN_START _IO(TEGRA_AUDIO_MAGIC, 0) #define TEGRA_AUDIO_IN_STOP _IO(TEGRA_AUDIO_MAGIC, 1) +struct tegra_audio_in_config { + int rate; + int stereo; +}; + +#define TEGRA_AUDIO_IN_SET_CONFIG _IOW(TEGRA_AUDIO_MAGIC, 2, \ + const struct tegra_audio_in_config *) +#define TEGRA_AUDIO_IN_GET_CONFIG _IOR(TEGRA_AUDIO_MAGIC, 3, \ + struct tegra_audio_in_config *) + #endif/*_CPCAP_AUDIO_H*/ |