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Add comments and documentation on MT8176 testing

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This commit is contained in:
Cameron Gutman 2018-06-16 16:31:06 -07:00
parent 6bba68207d
commit e97845e46e
2 changed files with 4 additions and 2 deletions
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2
app/src/main/java/com/limelight/binding/video/MediaCodecHelper.java
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@ -270,6 +270,8 @@ public class MediaCodecHelper {
LimeLog.info("Added omx.mtk to HEVC decoders based on PowerVR GPU");
whitelistedHevcDecoders.add("omx.mtk");
// This SoC (MT8176 in GPD XD+) supports AVC RFI too, but the maxNumReferenceFrames setting
// required to make it work adds a huge amount of latency.
LimeLog.info("Added omx.mtk to RFI list for HEVC");
refFrameInvalidationHevcPrefixes.add("omx.mtk");
}

4
decoder-errata.txt
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@ -3,8 +3,8 @@ This file serves to document some of the decoder errata when using MediaCodec ha
1. num_ref_frames is set to 16 by NVENC which causes decoders to allocate 16+ buffers. This can cause an error or lag on some devices.
- Affected decoders: TI OMAP4, Allwinner A20
2. Some decoders have a huge per-frame latency with the unmodified SPS sent from NVENC. Setting max_dec_frame_buffering fixes this latency issue.
- Affected decoders: NVIDIA Tegra 3 and 4, Broadcom VideoCore IV
2. Some H.264 decoders have a huge per-frame latency with the unmodified SPS sent from NVENC. Setting max_dec_frame_buffering=1 fixes this latency issue.
- Affected decoders: NVIDIA Tegra 3 and 4, Broadcom VideoCore IV, MT8176 (HEVC not affected)
3. Some decoders strictly require that you pass BUFFER_FLAG_CODEC_CONFIG and crash upon the IDR frame if you don't
- Affected decoders: TI OMAP4