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Check buffer size when frameWidth * frameHeight bigger than allocated buffer size #21170

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Merged
merged 5 commits into from
Dec 2, 2021

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JJJoonngg
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@JJJoonngg JJJoonngg commented Dec 2, 2021

Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

  • I agree to contribute to the project under Apache 2 License.
  • To the best of my knowledge, the proposed patch is not based on a code under GPL or other license that is incompatible with OpenCV
  • The PR is proposed to proper branch
  • There is reference to original bug report and related work
  • There is accuracy test, performance test and test data in opencv_extra repository, if applicable
    Patch to opencv_extra has the same branch name.
  • The feature is well documented and sample code can be built with the project CMake
force_builders=Android pack,docs
android_pack_config=ndk-18-api-level-24.config.py

…than allocated buffer size

    - issue nubmer opencv#21149 report, some android 12 device, allocated bufferSize is too small for the retrieve frame, so change logic for debugging
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@alalek alalek left a comment

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Thank you for contribution!

Please take a look on comments below.

if (info.flags & AMEDIACODEC_BUFFER_FLAG_END_OF_STREAM) {
if (frameWidth * frameHeight * 3 / 2 > bufferSize)
{
if (bufferSize == 3110400 && (frameWidth == 1920 && frameHeight == 1088) || frameWidth == 1088 && frameHeight == 1920)
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|| frameWidth == 1088 && frameHeight == 1920

Priority brackets is necessary in condition with &&/|| mess.


Please use this work around code with shorter conditions to support both 1920x1088 / 1088x1920 cases.
Please add link to the issue for this workaround code.

// WA: https://github.com/opencv/opencv/issues/21149
if (frameWidth * frameHeight * 3 / 2 > bufferSize)
{
    if (bufferSize == 3110400 && frameWidth == 1920 && frameHeight == 1088)
    {
        frameHeight = 1080;
        LOGV(...);
    }
    else if (bufferSize == 3110400 && frameWidth == 1088 && frameHeight == 1920`)
    {
        frameWidth = 1080;
        LOGV(...);
    }
    else
    {
        LOGE(...);
        return false;
    }
}

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Yes! Thank you

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Thank you for update!

Please remove unnecessary whitespace: http://pullrequest.opencv.org/buildbot/builders/precommit_docs/builds/33151/steps/whitespace%20opencv/logs/stdio

Also please remove double space on this line:

else if(bufferSize == 3110400 &&  frameWidth == 1088 && frameHeight == 1920)
                                ^^

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We still have whitespace issue: http://pullrequest.opencv.org/buildbot/builders/precommit_docs/builds/33152/steps/whitespace%20opencv/logs/stdio

modules/videoio/src/cap_android_mediandk.cpp:108: trailing whitespace.
+                        {   
                          ^^^ 3 spaces here

Comment on lines 121 to 125
if (info.flags & AMEDIACODEC_BUFFER_FLAG_END_OF_STREAM)
{
LOGV("output EOS");
sawOutputEOS = true;
}
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Perhaps this code block should go first.

return false; above should not block sawOutputEOS = true; flag.

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Yes, Thanks your review, I will fix it and repush it!

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LGTM 👍

@alalek alalek merged commit 2da1f91 into opencv:4.x Dec 2, 2021
@alalek alalek mentioned this pull request Dec 30, 2021
@alalek alalek mentioned this pull request Feb 22, 2022
a-sajjad72 pushed a commit to a-sajjad72/opencv that referenced this pull request Mar 30, 2023
Check buffer size when frameWidth * frameHeight bigger than allocated buffer size
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In Galaxy S21 and Android Version 12, VideoCapture::bool cv::VideoCapture::retrieve(Mat& image, int flag = 0) Crash erupt!
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