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1. The texture target needs to be GLES20.GL_TEXTURE_EXTERNAL_OES instead of GL_TEXTURE_2D, e.g. in the glBindTexture calls and glTexParameteri calls.
2. In the fragment shader define a requirement to use the extension:
#extension GL_OES_EGL_image_external : require
3. For the texture sampler used in the fragment shader, use samplerExternalOES instead of sampler2D.
Everything below here is all in the C code, no more Java.
4. In the C code, use glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, eglImage) to specify where the data is, instead of using glTexImage2D family of functions.

关于H264, 通用的5个进阶文档为

  • [H.264_MPEG-4 Part 10 White Paper]
  • [Video coding using the H.264 MPEG-4 AVC compression standard]
  • [H.264 and MPEG-4 video compression]
  • [Overview of the H.264_AVC Video Coding Standard]
  • [Overview and Introduction to the Fidelity Range Extensions]

分三个阶段学习

@buhman
buhman / 00 wpa_cli passphrase network
Last active March 8, 2023 21:51
all wpa_cli ommands can be tab-completed
localhost ~ # cat <<EOF> /etc/wpa_supplicant.conf
ctrl_interface=DIR=/run/wpa_supplicant GROUP=wheel
update_config=1
EOF
localhost ~ # wpa_supplicant -iwlp1s0 -Dnl80211 -c/etc/wpa_supplicant.conf -B
Successfully initialized wpa_supplicant
localhost ~ # wpa_cli
wpa_cli v2.0
Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi> and contributors
#!/usr/bin/perl
######################################################################
#
# File : split_bootimg.pl
# Author(s) : William Enck <enck@cse.psu.edu>
# Description : Split appart an Android boot image created
# with mkbootimg. The format can be found in
# android-src/system/core/mkbootimg/bootimg.h
#
# Thanks to alansj on xda-developers.com for