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perf: Use lossy compressed YUV buffers if available (#2195)

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Marc Rousavy
2023-11-22 16:19:29 +01:00
committed by GitHub
parent deb3c41ee0
commit 49d58d0d0c
7 changed files with 23 additions and 23 deletions
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4
docs/docs/guides/PERFORMANCE.mdx
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@@ -11,7 +11,7 @@ import useBaseUrl from '@docusaurus/useBaseUrl'
## Performance of VisionCamera
VisionCamera is highly optimized to be **as fast as a native Camera app**, and is sometimes even faster than that.
I am using highly efficient native GPU buffer formats (such as YUV 4:2:0, or lossless compressed YUV 4:2:0), running the video pipelines in parallel, using C++ for the Frame Processors implementation, and other tricks to make sure VisionCamera is as efficient as possible.
I am using highly efficient native GPU buffer formats (such as YUV 4:2:0, or lossy compressed YUV 4:2:0), running the video pipelines in parallel, using C++ for the Frame Processors implementation, and other tricks to make sure VisionCamera is as efficient as possible.
## Making it faster
@@ -66,7 +66,7 @@ Video HDR uses 10-bit formats and/or additional processing steps that come with
### Buffer Compression
Enable Buffer Compression ([`enableBufferCompression`](/docs/api/interfaces/CameraProps#enablebuffercompression)) to use lossless-compressed buffers for the Camera's video pipeline. These buffers can use less memory and are more efficient.
Enable Buffer Compression ([`enableBufferCompression`](/docs/api/interfaces/CameraProps#enablebuffercompression)) to use lossy-compressed buffers for the Camera's video pipeline. These buffers can use less memory and are more efficient.
Note: When not using a `frameProcessor`, buffer compression is automatically enabled.

2
docs/docs/guides/PIXEL_FORMATS.mdx
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@@ -77,4 +77,4 @@ Instead of [`kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange`](https://developer
[Buffer Compression](/docs/guides/performance#buffer-compression) is automatically enabled if you are not using a Frame Processor. If you are using a Frame Processor, buffer compression will be turned off, as it essentially uses a different format than YUV. See ["Understanding YpCbCr Image Formats"](https://developer.apple.com/documentation/accelerate/conversion/understanding_ypcbcr_image_formats) for more information.
Instead of [`kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange`](https://developer.apple.com/documentation/corevideo/kcvpixelformattype_420ypcbcr8biplanarvideorange), it uses [`kCVPixelFormatType_Lossless_420YpCbCr8BiPlanarVideoRange`](https://developer.apple.com/documentation/corevideo/3746862-anonymous/kcvpixelformattype_lossless_420ypcbcr8biplanarvideorange), same for full-range.
Instead of [`kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange`](https://developer.apple.com/documentation/corevideo/kcvpixelformattype_420ypcbcr8biplanarvideorange), it uses [`kCVPixelFormatType_Lossy_420YpCbCr8BiPlanarVideoRange`](https://developer.apple.com/documentation/corevideo/3746862-anonymous/kcvpixelformattype_lossy_420ypcbcr8biplanarvideorange), same for full-range.