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Workaround decoder errata of the Exynos 4

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Cameron Gutman
2014-08-29 15:38:08 -07:00
parent e3e7ac1e68
commit 5fdd9b773c
2 changed files with 12 additions and 7 deletions
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7
decoder-errata.txt
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@@ -1,10 +1,13 @@
This file serves to document some of the decoder errata when using MediaCodec hardware decoders on certain devices.
1. num_ref_frames is set to 16 by NVENC which causes decoders to allocate 16+ buffers. This can cause an OOM error on some devices.
- Affected decoders: TI OMAP4, possibly some Qualcomm chips too (Galaxy S3 on 4.3+)
- Affected decoders: TI OMAP4
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
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
- Affected decoders: TI OMAP4
4. Some decoders require num_ref_frames=1 and max_dec_frame_buffering=1 to avoid crashing on SPS or first I-frame
- Affected decoders: Qualcomm in GS3 on 4.3+, Exynos 4