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cvsandbox avatar cvsandbox commented on May 29, 2024

No, nothing is disconnected. When we get initial HTTP connection for MJPEG stream, we provide an image we currently have from camera as initial image of MJPEG sequence. Then we set the timer on the response, to provide further images. It is more of internal detail driven by Mongoose web server architecture.

Once client makes HTTP connection and requests MJPEG stream, it will not be disconnected by server. Only if client drops connection (when it does not want any more video streaming) or some network failure happens.

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w136111526 avatar w136111526 commented on May 29, 2024

Hi why we need the following code when copy pixel from dshow?
for ( int x = 0; x < packs; x++, srcRow += 48, dstRow += 48 )
{
chunk0 = _mm_loadu_si128( (__m128i*) srcRow );
chunk1 = _mm_loadu_si128( (__m128i*) ( srcRow + 16 ) );
chunk2 = _mm_loadu_si128( (__m128i*) ( srcRow + 32 ) );

                            _mm_storeu_si128( (__m128i*) dstRow,
                                _mm_or_si128( _mm_shuffle_epi8( chunk0, swapIndeces_0 ),
                                              _mm_shuffle_epi8( chunk1, chunk0IndecesFrom1 ) ) );

                            _mm_storeu_si128( (__m128i*) ( dstRow + 16 ),
                                _mm_or_si128(
                                _mm_or_si128( _mm_shuffle_epi8( chunk1, swapIndeces_1 ),
                                              _mm_shuffle_epi8( chunk0, chunk1IndecesFrom0 ) ),
                                              _mm_shuffle_epi8( chunk2, chunk1IndecesFrom2 ) ) );

                            _mm_storeu_si128( (__m128i*) ( dstRow + 32 ),
                                _mm_or_si128( _mm_shuffle_epi8( chunk2, swapIndeces_2 ),
                                              _mm_shuffle_epi8( chunk1, chunk2IndecesFrom1 ) ) );
                        }

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cvsandbox avatar cvsandbox commented on May 29, 2024

It is SSE optimized version of the code on line 249:
https://github.com/cvsandbox/cam2web/blob/master/src/core/cameras/DirectShow/XLocalVideoDevice.cpp#L249

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