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Default branch: MAIN
Current tag: kent-audio2
Revision 1.12 / (download) - annotate - [select for diffs], Mon Jan 10 22:01:36 2005 UTC (19 years, 2 months ago) by kent
Branch: MAIN
CVS Tags: yamt-vop-base3,
yamt-vop-base2,
yamt-vop-base,
yamt-vop,
yamt-readahead-pervnode,
yamt-readahead-perfile,
yamt-readahead-base3,
yamt-readahead-base2,
yamt-readahead-base,
yamt-readahead,
yamt-km-base4,
yamt-km-base3,
yamt-km-base2,
yamt-km-base,
yamt-km,
thorpej-vnode-attr-base,
thorpej-vnode-attr,
netbsd-3-base,
netbsd-3-1-RELEASE,
netbsd-3-1-RC4,
netbsd-3-1-RC3,
netbsd-3-1-RC2,
netbsd-3-1-RC1,
netbsd-3-1-1-RELEASE,
netbsd-3-1,
netbsd-3-0-RELEASE,
netbsd-3-0-RC6,
netbsd-3-0-RC5,
netbsd-3-0-RC4,
netbsd-3-0-RC3,
netbsd-3-0-RC2,
netbsd-3-0-RC1,
netbsd-3-0-3-RELEASE,
netbsd-3-0-2-RELEASE,
netbsd-3-0-1-RELEASE,
netbsd-3-0,
netbsd-3,
ktrace-lwp-base,
kent-audio2-base,
kent-audio2
Branch point for: yamt-lazymbuf
Changes since 1.11: +416 -287
lines
Diff to previous 1.11 (unified)
merge kent-audio1 branch, which introduces audio filter pipeline to the MI audio framework Summary of changes: * struct audio_params - remove sw_code, factor, factor_denom, hw_sample_rate, hw_encoding ,hw_precision, and hw_channels. Conversion information is conveyed by stream_filter_list_t. - change the type of sample_rate: u_long -> u_int - add `validbits,' which represents the valid data size in precision bits. It is required in order to distinguish 24/32bit from 24/24bit or 32/32bit. * audio_hw_if - add two parameters to set_params() stream_filter_list_t *pfil, stream_filter_list *rfil A HW driver should set filter recipes for requested formats - constify audio_params parameters of trigger_output() and trigger_input(). They represent audio formats for the hardware. - make open() and close() optional - add int (AUMODE_PLAY or AUMODE_RECORD) and audio_params_t parameters to round_blocksize() * sw_code is replaced with stream_filter_t. stream_filer_t converts audio data in an input buffer and writes into another output buffer unlike sw_code, which converts data in single buffer. converters in dev/auconv.c, dev/mulaw.c, dev/aurateconv.c, dev/tc/bba.c, dev/ic/msm6258.c, and arch/arm/iomd/vidcaudio.c are reimplemented as stream_filter_t * MI audio - audiosetinfo() builds filter pipelines from stream_filter_list_t filled by audio_hw_if::set_params() - audiosetinfo() returns with EINVAL if mmapped and set_params() requests filters - audio_write(), audio_pint(), and audio_rint() invoke a filter pipeline. - ioctl() for FIONREAD, AUDIO_WSEEK, AUDIO_GETIOFFS, AUDIO_GETOOFFS, and audio_prinfo::{seek,samples} for AUDIO_GETINFO handle values for a buffer nearest to userland. * add `struct device *' parameter to ac97_attach() * all of audio HW drivers follow audio_hw_if and ac97 changes