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restored original params for JPEG codec

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This commit is contained in:
csoler 2015-08-14 22:44:39 -04:00
parent 5aac92fc97
commit 49c6c8a1fa
1 changed files with 12 additions and 8 deletions
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20
plugins/VOIP/gui/VideoProcessor.cpp
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@ -9,7 +9,7 @@
#include "QVideoDevice.h"
VideoProcessor::VideoProcessor()
:_encoded_frame_size(256,256)
:_encoded_frame_size(128,128)
{
_decoded_output_device = NULL ;
_encoding_current_codec = VIDEO_PROCESSOR_CODEC_ID_JPEG_VIDEO;
@ -40,6 +40,8 @@ bool VideoProcessor::processImage(const QImage& img,uint32_t size_hint,uint32_t&
codec->encodeData(img.scaled(_encoded_frame_size,Qt::IgnoreAspectRatio,Qt::SmoothTransformation),size_hint,chunk) ;
encoded_size = chunk.size ;
if(chunk.size == 0) // the codec might be buffering the frame for compression reasons
return true ;
@ -146,7 +148,6 @@ bool JPEGVideo::decodeData(const RsVOIPDataChunk& chunk,QImage& image)
std::cerr << "image.loadFromData(): returned an error.: " << std::endl;
return false ;
}
if(flags & JPEG_VIDEO_FLAGS_DIFFERENTIAL_FRAME)
{
@ -187,6 +188,9 @@ bool JPEGVideo::encodeData(const QImage& image,uint32_t /* size_hint */,RsVOIPDa
for(uint32_t i=0;i<image.byteCount();++i)
{
// We cannot use basic modulo 256 arithmetic, because the decompressed JPeg frames do not follow the same rules (values are clamped)
// and cause color blotches when perturbated by a differential frame.
int diff = ( (int)image.bits()[i] - (int)_encoded_reference_frame.bits()[i]) + 128;
encoded_frame.bits()[i] = (unsigned char)std::max(0,std::min(255,diff)) ;
}
@ -198,8 +202,8 @@ bool JPEGVideo::encodeData(const QImage& image,uint32_t /* size_hint */,RsVOIPDa
_encoded_ref_frame_count = 0 ;
_encoded_reference_frame = image ;
encoded_frame = image ;
differential_frame = false ;
differential_frame = false ;
}
QByteArray qb ;
@ -209,17 +213,17 @@ bool JPEGVideo::encodeData(const QImage& image,uint32_t /* size_hint */,RsVOIPDa
encoded_frame.save(&buffer,"JPEG") ;
voip_chunk.data = malloc(HEADER_SIZE + qb.size());
// build header
uint32_t flags = differential_frame ? JPEG_VIDEO_FLAGS_DIFFERENTIAL_FRAME : 0x0 ;
((unsigned char *)voip_chunk.data)[0] = VideoProcessor::VIDEO_PROCESSOR_CODEC_ID_JPEG_VIDEO & 0xff ;
((unsigned char *)voip_chunk.data)[1] = (VideoProcessor::VIDEO_PROCESSOR_CODEC_ID_JPEG_VIDEO >> 8) & 0xff ;
((unsigned char *)voip_chunk.data)[2] = flags & 0xff ;
((unsigned char *)voip_chunk.data)[3] = (flags >> 8) & 0xff ;
memcpy(voip_chunk.data+HEADER_SIZE,qb.data(),qb.size()) ;
voip_chunk.size = HEADER_SIZE + qb.size() ;
voip_chunk.type = RsVOIPDataChunk::RS_VOIP_DATA_TYPE_VIDEO ;