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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2006-01-09 15:25:41 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@brturbo.com.br> | 2006-01-09 15:25:41 -0200 |
| commit | 3578d3dd0b1e468a44a76a83efe90476a854625d (patch) | |
| tree | 2cd544f2aae9844821afdf90308048a800e961a1 /include/media/v4l2-common.h | |
| parent | 21fa715e67fe57e404d7f5f39b7f18016db9e4b6 (diff) | |
| download | blackbird-op-linux-3578d3dd0b1e468a44a76a83efe90476a854625d.tar.gz blackbird-op-linux-3578d3dd0b1e468a44a76a83efe90476a854625d.zip | |
V4L/DVB (3214): Calculate the saa7115 AMCLK regs instead of using fixed values
- Calculate the audio master clock registers from the actual
frequencies. This simplifies the code and it also prepares
for adding CGC2 support.
- VIDIOC_INT_AUDIO_CLOCK_FREQ now receives an u32 instead of
an enum. It is more generic and actually easier to implement.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Diffstat (limited to 'include/media/v4l2-common.h')
| -rw-r--r-- | include/media/v4l2-common.h | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 2f2402996409..90248d29ed0a 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -26,13 +26,6 @@ #ifndef V4L2_COMMON_H_ #define V4L2_COMMON_H_ -/* VIDIOC_INT_AUDIO_CLOCK_FREQ */ -enum v4l2_audio_clock_freq { - V4L2_AUDCLK_32_KHZ = 32000, - V4L2_AUDCLK_441_KHZ = 44100, - V4L2_AUDCLK_48_KHZ = 48000, -}; - /* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */ struct v4l2_register { u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */ @@ -77,10 +70,12 @@ enum v4l2_chip_ident { /* Reset the I2C chip */ #define VIDIOC_INT_RESET _IO ('d', 102) -/* Set the frequency of the audio clock output. +/* Set the frequency (in Hz) of the audio clock output. Used to slave an audio processor to the video decoder, ensuring that audio - and video remain synchronized. */ -#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOR ('d', 103, enum v4l2_audio_clock_freq) + and video remain synchronized. + Usual values for the frequency are 48000, 44100 or 32000 Hz. + If the frequency is not supported, then -EINVAL is returned. */ +#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32) /* Video decoders that support sliced VBI need to implement this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI |
