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<td class='lines'><pre><code><span class="hl slc">#!/usr/bin/env python3</span>
<span class="hl slc"># SPDX-License-Identifier: GPL-2.0-or-later</span>
<span class="hl slc"># Copyright (C) 2020, Google Inc.</span>
<span class="hl slc">#</span>
<span class="hl slc"># Author: Paul Elder <paul.elder@ideasonboard.com></span>
<span class="hl slc">#</span>
<span class="hl slc"># v4l2_compat_test.py - Test the V4L2 compatibility layer</span>
<span class="hl kwa">import</span> argparse
<span class="hl kwa">import</span> glob
<span class="hl kwa">import</span> os
<span class="hl kwa">from</span> packaging <span class="hl kwa">import</span> version
<span class="hl kwa">import</span> re
<span class="hl kwa">import</span> shutil
<span class="hl kwa">import</span> signal
<span class="hl kwa">import</span> subprocess
<span class="hl kwa">import</span> sys
MIN_V4L_UTILS_VERSION <span class="hl opt">=</span> version<span class="hl opt">.</span><span class="hl kwd">parse</span><span class="hl opt">(</span><span class="hl str">"1.21.0"</span><span class="hl opt">)</span>
TestPass <span class="hl opt">=</span> <span class="hl num">0</span>
TestFail <span class="hl opt">= -</span><span class="hl num">1</span>
TestSkip <span class="hl opt">=</span> <span class="hl num">77</span>
supported_pipelines <span class="hl opt">= [</span>
<span class="hl str">'bcm2835-isp'</span><span class="hl opt">,</span>
<span class="hl str">'uvcvideo'</span><span class="hl opt">,</span>
<span class="hl str">'vimc'</span><span class="hl opt">,</span>
<span class="hl opt">]</span>
<span class="hl kwa">def</span> <span class="hl kwd">grep</span><span class="hl opt">(</span>exp<span class="hl opt">,</span> arr<span class="hl opt">):</span>
<span class="hl kwa">return</span> <span class="hl opt">[</span>s <span class="hl kwa">for</span> s <span class="hl kwa">in</span> arr <span class="hl kwa">if</span> re<span class="hl opt">.</span><span class="hl kwd">search</span><span class="hl opt">(</span>exp<span class="hl opt">,</span> s<span class="hl opt">)]</span>
<span class="hl kwa">def</span> <span class="hl kwd">run_with_stdout</span><span class="hl opt">(*</span>args<span class="hl opt">,</span> env<span class="hl opt">={}):</span>
<span class="hl kwa">try</span><span class="hl opt">:</span>
with <span class="hl kwb">open</span><span class="hl opt">(</span>os<span class="hl opt">.</span>devnull<span class="hl opt">,</span> <span class="hl str">'w'</span><span class="hl opt">)</span> <span class="hl kwa">as</span> devnull<span class="hl opt">:</span>
output <span class="hl opt">=</span> subprocess<span class="hl opt">.</span><span class="hl kwd">check_output</span><span class="hl opt">(</span>args<span class="hl opt">,</span> env<span class="hl opt">=</span>env<span class="hl opt">,</span> stderr<span class="hl opt">=</span>devnull<span class="hl opt">)</span>
ret <span class="hl opt">=</span> <span class="hl num">0</span>
<span class="hl kwa">except</span> subprocess<span class="hl opt">.</span>CalledProcessError <span class="hl kwa">as</span> err<span class="hl opt">:</span>
output <span class="hl opt">=</span> err<span class="hl opt">.</span>output
ret <span class="hl opt">=</span> err<span class="hl opt">.</span>returncode
<span class="hl kwa">return</span> ret<span class="hl opt">,</span> output<span class="hl opt">.</span><span class="hl kwd">decode</span><span class="hl opt">(</span><span class="hl str">'utf-8'</span><span class="hl opt">).</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">'</span><span class="hl esc">\n</span><span class="hl str">'</span><span class="hl opt">)</span>
<span class="hl kwa">def</span> <span class="hl kwd">extract_result</span><span class="hl opt">(</span>result<span class="hl opt">):</span>
res <span class="hl opt">=</span> result<span class="hl opt">.</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">', '</span><span class="hl opt">)</span>
ret <span class="hl opt">= {}</span>
ret<span class="hl opt">[</span><span class="hl str">'total'</span><span class="hl opt">] =</span> <span class="hl kwb">int</span><span class="hl opt">(</span>res<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">': '</span><span class="hl opt">)[-</span><span class="hl num">1</span><span class="hl opt">])</span>
ret<span class="hl opt">[</span><span class="hl str">'succeeded'</span><span class="hl opt">] =</span> <span class="hl kwb">int</span><span class="hl opt">(</span>res<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">': '</span><span class="hl opt">)[-</span><span class="hl num">1</span><span class="hl opt">])</span>
ret<span class="hl opt">[</span><span class="hl str">'failed'</span><span class="hl opt">] =</span> <span class="hl kwb">int</span><span class="hl opt">(</span>res<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">': '</span><span class="hl opt">)[-</span><span class="hl num">1</span><span class="hl opt">])</span>
ret<span class="hl opt">[</span><span class="hl str">'warnings'</span><span class="hl opt">] =</span> <span class="hl kwb">int</span><span class="hl opt">(</span>res<span class="hl opt">[</span><span class="hl num">3</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">': '</span><span class="hl opt">)[-</span><span class="hl num">1</span><span class="hl opt">])</span>
ret<span class="hl opt">[</span><span class="hl str">'device'</span><span class="hl opt">] =</span> res<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">()[</span><span class="hl num">4</span><span class="hl opt">].</span><span class="hl kwd">strip</span><span class="hl opt">(</span><span class="hl str">':'</span><span class="hl opt">)</span>
ret<span class="hl opt">[</span><span class="hl str">'driver'</span><span class="hl opt">] =</span> res<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">()[</span><span class="hl num">2</span><span class="hl opt">]</span>
<span class="hl kwa">return</span> ret
<span class="hl kwa">def</span> <span class="hl kwd">test_v4l2_compliance</span><span class="hl opt">(</span>v4l2_compliance<span class="hl opt">,</span> v4l2_compat<span class="hl opt">,</span> device<span class="hl opt">,</span> base_driver<span class="hl opt">):</span>
ret<span class="hl opt">,</span> output <span class="hl opt">=</span> <span class="hl kwd">run_with_stdout</span><span class="hl opt">(</span>v4l2_compliance<span class="hl opt">,</span> <span class="hl str">'-s'</span><span class="hl opt">,</span> <span class="hl str">'-d'</span><span class="hl opt">,</span> device<span class="hl opt">,</span> env<span class="hl opt">={</span><span class="hl str">'LD_PRELOAD'</span><span class="hl opt">:</span> v4l2_compat<span class="hl opt">})</span>
<span class="hl kwa">if</span> ret <span class="hl opt"><</span> <span class="hl num">0</span><span class="hl opt">:</span>
output<span class="hl opt">.</span><span class="hl kwd">append</span><span class="hl opt">(</span>f<span class="hl str">'Test for</span> <span class="hl ipl">{device}</span> <span class="hl str">terminated due to signal {signal.Signals(-ret).name}'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">,</span> output
result <span class="hl opt">=</span> <span class="hl kwd">extract_result</span><span class="hl opt">(</span>output<span class="hl opt">[-</span><span class="hl num">2</span><span class="hl opt">])</span>
<span class="hl kwa">if</span> result<span class="hl opt">[</span><span class="hl str">'failed'</span><span class="hl opt">] ==</span> <span class="hl num">0</span><span class="hl opt">:</span>
<span class="hl kwa">return</span> TestPass<span class="hl opt">,</span> <span class="hl kwa">None</span>
<span class="hl slc"># vimc will fail s_fmt because it only supports framesizes that are</span>
<span class="hl slc"># multiples of 3</span>
<span class="hl kwa">if</span> base_driver <span class="hl opt">==</span> <span class="hl str">'vimc'</span> <span class="hl kwa">and</span> result<span class="hl opt">[</span><span class="hl str">'failed'</span><span class="hl opt">] ==</span> <span class="hl num">1</span><span class="hl opt">:</span>
failures <span class="hl opt">=</span> <span class="hl kwd">grep</span><span class="hl opt">(</span><span class="hl str">'fail'</span><span class="hl opt">,</span> output<span class="hl opt">)</span>
<span class="hl kwa">if</span> re<span class="hl opt">.</span><span class="hl kwd">search</span><span class="hl opt">(</span><span class="hl str">'S_FMT cannot handle an invalid format'</span><span class="hl opt">,</span> failures<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">])</span> <span class="hl kwa">is None</span><span class="hl opt">:</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">,</span> output
<span class="hl kwa">return</span> TestPass<span class="hl opt">,</span> <span class="hl kwa">None</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">,</span> output
<span class="hl kwa">def</span> <span class="hl kwd">main</span><span class="hl opt">(</span>argv<span class="hl opt">):</span>
parser <span class="hl opt">=</span> argparse<span class="hl opt">.</span><span class="hl kwd">ArgumentParser</span><span class="hl opt">()</span>
parser<span class="hl opt">.</span><span class="hl kwd">add_argument</span><span class="hl opt">(</span><span class="hl str">'-a'</span><span class="hl opt">,</span> <span class="hl str">'--all'</span><span class="hl opt">,</span> action<span class="hl opt">=</span><span class="hl str">'store_true'</span><span class="hl opt">,</span>
<span class="hl kwb">help</span><span class="hl opt">=</span><span class="hl str">'Test all available cameras'</span><span class="hl opt">)</span>
parser<span class="hl opt">.</span><span class="hl kwd">add_argument</span><span class="hl opt">(</span><span class="hl str">'v4l2_compat'</span><span class="hl opt">,</span> <span class="hl kwb">type</span><span class="hl opt">=</span><span class="hl kwb">str</span><span class="hl opt">,</span>
<span class="hl kwb">help</span><span class="hl opt">=</span><span class="hl str">'Path to v4l2-compat.so'</span><span class="hl opt">)</span>
args <span class="hl opt">=</span> parser<span class="hl opt">.</span><span class="hl kwd">parse_args</span><span class="hl opt">(</span>argv<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">:])</span>
v4l2_compat <span class="hl opt">=</span> args<span class="hl opt">.</span>v4l2_compat
v4l2_compliance <span class="hl opt">=</span> shutil<span class="hl opt">.</span><span class="hl kwd">which</span><span class="hl opt">(</span><span class="hl str">'v4l2-compliance'</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> v4l2_compliance <span class="hl kwa">is None</span><span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'v4l2-compliance is not available'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestSkip
ret<span class="hl opt">,</span> out <span class="hl opt">=</span> <span class="hl kwd">run_with_stdout</span><span class="hl opt">(</span>v4l2_compliance<span class="hl opt">,</span> <span class="hl str">'--version'</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> ret <span class="hl opt">!=</span> <span class="hl num">0</span> <span class="hl kwa">or</span> version<span class="hl opt">.</span><span class="hl kwd">parse</span><span class="hl opt">(</span>out<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">()[</span><span class="hl num">1</span><span class="hl opt">].</span><span class="hl kwd">replace</span><span class="hl opt">(</span><span class="hl str">','</span><span class="hl opt">,</span> <span class="hl str">''</span><span class="hl opt">)) <</span> MIN_V4L_UTILS_VERSION<span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'v4l2-compliance version >= 1.21.0 required'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestSkip
v4l2_ctl <span class="hl opt">=</span> shutil<span class="hl opt">.</span><span class="hl kwd">which</span><span class="hl opt">(</span><span class="hl str">'v4l2-ctl'</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> v4l2_ctl <span class="hl kwa">is None</span><span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'v4l2-ctl is not available'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestSkip
ret<span class="hl opt">,</span> out <span class="hl opt">=</span> <span class="hl kwd">run_with_stdout</span><span class="hl opt">(</span>v4l2_ctl<span class="hl opt">,</span> <span class="hl str">'--version'</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> ret <span class="hl opt">!=</span> <span class="hl num">0</span> <span class="hl kwa">or</span> version<span class="hl opt">.</span><span class="hl kwd">parse</span><span class="hl opt">(</span>out<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">()[-</span><span class="hl num">1</span><span class="hl opt">]) <</span> MIN_V4L_UTILS_VERSION<span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'v4l2-ctl version >= 1.21.0 required'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestSkip
dev_nodes <span class="hl opt">=</span> glob<span class="hl opt">.</span><span class="hl kwd">glob</span><span class="hl opt">(</span><span class="hl str">'/dev/video*'</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> <span class="hl kwb">len</span><span class="hl opt">(</span>dev_nodes<span class="hl opt">) ==</span> <span class="hl num">0</span><span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'no video nodes available to test with'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestSkip
failed <span class="hl opt">= []</span>
drivers_tested <span class="hl opt">= {}</span>
<span class="hl kwa">for</span> device <span class="hl kwa">in</span> dev_nodes<span class="hl opt">:</span>
ret<span class="hl opt">,</span> out <span class="hl opt">=</span> <span class="hl kwd">run_with_stdout</span><span class="hl opt">(</span>v4l2_ctl<span class="hl opt">,</span> <span class="hl str">'-D'</span><span class="hl opt">,</span> <span class="hl str">'-d'</span><span class="hl opt">,</span> device<span class="hl opt">,</span> env<span class="hl opt">={</span><span class="hl str">'LD_PRELOAD'</span><span class="hl opt">:</span> v4l2_compat<span class="hl opt">})</span>
<span class="hl kwa">if</span> ret <span class="hl opt"><</span> <span class="hl num">0</span><span class="hl opt">:</span>
failed<span class="hl opt">.</span><span class="hl kwd">append</span><span class="hl opt">(</span>device<span class="hl opt">)</span>
<span class="hl kwa">print</span><span class="hl opt">(</span>f<span class="hl str">'v4l2-ctl failed on</span> <span class="hl ipl">{device}</span> <span class="hl str">with v4l2-compat'</span><span class="hl opt">)</span>
<span class="hl kwa">continue</span>
driver <span class="hl opt">=</span> <span class="hl kwd">grep</span><span class="hl opt">(</span><span class="hl str">'Driver name'</span><span class="hl opt">,</span> out<span class="hl opt">)[</span><span class="hl num">0</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">':'</span><span class="hl opt">)[-</span><span class="hl num">1</span><span class="hl opt">].</span><span class="hl kwd">strip</span><span class="hl opt">()</span>
<span class="hl kwa">if</span> driver <span class="hl opt">!=</span> <span class="hl str">"libcamera"</span><span class="hl opt">:</span>
<span class="hl kwa">continue</span>
ret<span class="hl opt">,</span> out <span class="hl opt">=</span> <span class="hl kwd">run_with_stdout</span><span class="hl opt">(</span>v4l2_ctl<span class="hl opt">,</span> <span class="hl str">'-D'</span><span class="hl opt">,</span> <span class="hl str">'-d'</span><span class="hl opt">,</span> device<span class="hl opt">)</span>
<span class="hl kwa">if</span> ret <span class="hl opt"><</span> <span class="hl num">0</span><span class="hl opt">:</span>
failed<span class="hl opt">.</span><span class="hl kwd">append</span><span class="hl opt">(</span>device<span class="hl opt">)</span>
<span class="hl kwa">print</span><span class="hl opt">(</span>f<span class="hl str">'v4l2-ctl failed on</span> <span class="hl ipl">{device}</span> <span class="hl str">without v4l2-compat'</span><span class="hl opt">)</span>
<span class="hl kwa">continue</span>
driver <span class="hl opt">=</span> <span class="hl kwd">grep</span><span class="hl opt">(</span><span class="hl str">'Driver name'</span><span class="hl opt">,</span> out<span class="hl opt">)[</span><span class="hl num">0</span><span class="hl opt">].</span><span class="hl kwd">split</span><span class="hl opt">(</span><span class="hl str">':'</span><span class="hl opt">)[-</span><span class="hl num">1</span><span class="hl opt">].</span><span class="hl kwd">strip</span><span class="hl opt">()</span>
<span class="hl kwa">if</span> driver <span class="hl kwa">not in</span> supported_pipelines<span class="hl opt">:</span>
<span class="hl kwa">continue</span>
<span class="hl slc"># TODO: Add kernel version check when vimc supports scaling</span>
<span class="hl kwa">if</span> driver <span class="hl opt">==</span> <span class="hl str">"vimc"</span><span class="hl opt">:</span>
<span class="hl kwa">continue</span>
<span class="hl kwa">if not</span> args<span class="hl opt">.</span>all <span class="hl kwa">and</span> driver <span class="hl kwa">in</span> drivers_tested<span class="hl opt">:</span>
<span class="hl kwa">continue</span>
<span class="hl kwa">print</span><span class="hl opt">(</span>f<span class="hl str">'Testing</span> <span class="hl ipl">{device}</span> <span class="hl str">with</span> <span class="hl ipl">{driver}</span> <span class="hl str">driver... '</span><span class="hl opt">,</span> end<span class="hl opt">=</span><span class="hl str">''</span><span class="hl opt">)</span>
ret<span class="hl opt">,</span> msg <span class="hl opt">=</span> <span class="hl kwd">test_v4l2_compliance</span><span class="hl opt">(</span>v4l2_compliance<span class="hl opt">,</span> v4l2_compat<span class="hl opt">,</span> device<span class="hl opt">,</span> driver<span class="hl opt">)</span>
<span class="hl kwa">if</span> ret <span class="hl opt">==</span> TestFail<span class="hl opt">:</span>
failed<span class="hl opt">.</span><span class="hl kwd">append</span><span class="hl opt">(</span>device<span class="hl opt">)</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'failed'</span><span class="hl opt">)</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'</span><span class="hl esc">\n</span><span class="hl str">'</span><span class="hl opt">.</span><span class="hl kwd">join</span><span class="hl opt">(</span>msg<span class="hl opt">))</span>
<span class="hl kwa">else</span><span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span><span class="hl str">'success'</span><span class="hl opt">)</span>
drivers_tested<span class="hl opt">[</span>driver<span class="hl opt">] =</span> <span class="hl kwa">True</span>
<span class="hl kwa">if</span> <span class="hl kwb">len</span><span class="hl opt">(</span>drivers_tested<span class="hl opt">) ==</span> <span class="hl num">0</span><span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span>f<span class="hl str">'No compatible drivers found'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestSkip
<span class="hl kwa">if</span> <span class="hl kwb">len</span><span class="hl opt">(</span>failed<span class="hl opt">) ></span> <span class="hl num">0</span><span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span>f<span class="hl str">'Failed {len(failed)} tests:'</span><span class="hl opt">)</span>
<span class="hl kwa">for</span> device <span class="hl kwa">in</span> failed<span class="hl opt">:</span>
<span class="hl kwa">print</span><span class="hl opt">(</span>f<span class="hl str">'-</span> <span class="hl ipl">{device}</span><span class="hl str">'</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestPass <span class="hl kwa">if not</span> failed <span class="hl kwa">else</span> TestFail
<span class="hl kwa">if</span> __name__ <span class="hl opt">==</span> <span class="hl str">'__main__'</span><span class="hl opt">:</span>
sys<span class="hl opt">.</span><span class="hl kwd">exit</span><span class="hl opt">(</span><span class="hl kwd">main</span><span class="hl opt">(</span>sys<span class="hl opt">.</span>argv<span class="hl opt">))</span>
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