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36 lines
1.2 KiB
Rust
36 lines
1.2 KiB
Rust
use crate::VideoFormat;
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pub(super) const VBI_HD_MIN_PIXEL_WIDTH: u32 = 1280;
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// rustdoc-stripper-ignore-next
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/// Video Vertical Blanking Interval related Errors.
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#[derive(thiserror::Error, Clone, Copy, Debug, Eq, PartialEq)]
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pub enum VideoVBIError {
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#[error("Format and/or pixel_width is not supported")]
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Unsupported,
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#[error("Not enough space left in the current line")]
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NotEnoughSpace,
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#[error("Not enough data left in the current line")]
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NotEnoughData,
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#[error("Insufficient line buffer length {found}. Expected: {expected}")]
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InsufficientLineBufLen { found: usize, expected: usize },
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}
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// rustdoc-stripper-ignore-next
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/// Returns the buffer length needed to store the line.
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pub(super) fn line_buffer_len(format: VideoFormat, width: u32) -> usize {
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skip_assert_initialized!();
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// Taken from gst-plugins-base/gst-libs/gst/video/video-info.c:fill_planes
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match format {
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VideoFormat::V210 => ((width as usize + 47) / 48) * 128,
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VideoFormat::Uyvy => {
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// round up width to the next multiple of 4
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// FIXME: {integer}::next_multiple_of was stabilised in rustc 1.73.0
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((width as usize * 2) + 3) & !3
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}
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_ => unreachable!(),
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}
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}
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