i have YUV packed images which i have first convert to planar and then jpeg format (on button press) for Displaying in a picture box in VC++ 2010, using command at the end of entire code (after jpeg conversion done)
pictureBox1->Image = Image::FromFile("d:\\encoded_pic_420.jpg");
i am able to store and format convert these received images from YUV packed to YUV planar First and then Second from "Planar to JPEG format" (below Code First & Second).
on first time it Convert and Display image in picture box sucessfully, but when i press button second time it generate an error (in this below code section) SECOND PART OF CODE (PLANAR TO JPEG CONVERSION
if (got_picture==1)
{
pkt.stream_index = video_st->index;
ret = av_write_frame(pFormatCtx, &pkt);
}
error mesage is at Code Line (above) ret = av_write_frame (pFormatCtx,&pkt);
message is :
"An unhandled exception of type accured System.AccessViolationException , Additional information: Attempted to read or write protected memory, this is often an indication that other memory is corrupted"
the Complete code which i am using for YUV packet to Planar first and then second Planar to Jpeg conversion is below one. First: YUV PACKED to PLANAR CONVERSION
FILE *in_file = NULL; //fopen("myHexFile.yuv","rb"); input PACKED
FILE *out_file = NULL; //Output File Planar format
int in_width = 2448; //YUV's width
int in_height = 2050; //YUV's heigh
int out_width = 2448; //YUV's width
int out_height = 2050; //YUV's heigh
int in_linesize[4];
int out_linesize[4];
uint8_t *in_data[4], *out_data[4];
unsigned long int out_bufsize,in_bufsize;
in_file = fopen("myHexFile.yuv","rb"); //This is YUV422-UYVY Input packed image
if(in_file == NULL)
{
this->Print2TextBox1(L"Input File Opening error...!");
exit(1);
}
out_file = fopen("d:\\myHexFile_Planar.yuv", "wb"); //Source Input File
if(out_file == NULL)
{
this->Print2TextBox1(L"toutput File Opening error...!!");
exit(1);
}
else { this->Print2TextBox1(L"Output File Created...!!\n"); }
//-Loads the whole database of available codecs and formats-------
av_register_all();
this->Print2TextBox1(L"Codac database Loaded...\n");
//---Create scaling context------------------------sws_getContex
this->Print2TextBox1(L"Creating Scaling context..\n");
sws_ctx = sws_getContext( in_width, in_height, src_pix_fmt,
out_width,out_height,dst_pix_fmt,
SWS_BICUBIC, NULL, NULL, NULL);
if(!sws_ctx) { this->Print2TextBox1(L"Context Error..\n"); }
//--Allocate Source Image Buffer--------------------------
this->Print2TextBox1(L"Allocate Source Image Buffer...\n");
AVFrame *RawPic = av_frame_alloc();
if(!RawPic)
{
this->Print2TextBox1(L"Could not allocate Raw Image frame\n");
exit(1);
}
RawPic->format = src_pix_fmt;
RawPic->width = in_width;
RawPic->height = in_height;
int num_bytes1 = avpicture_get_size(src_pix_fmt,in_width,in_height);
uint8_t* RawPic_Buffer = (uint8_t*)av_malloc(num_bytes1*sizeof(int8_t));
ret =av_image_alloc(RawPic->data,in_linesize,in_width,in_height,src_pix_fmt, 1);
if(ret < 0)
{
this->Print2TextBox1(L"Could not allocate raw picture buffer\n");
exit(1);
}
in_bufsize = ret;
//------Reading Input Image and Store in RawPic->Data Pointer---
fread(RawPic->data[0],1,in_bufsize,in_file);
//----Allocate Desitnation Image Buffer-------------------
this->Print2TextBox1(L"Allocate Destination Image Buffer...\n");
AVFrame *ScalePic = av_frame_alloc();
if(!ScalePic)
{
this->Print2TextBox1(L"Could not allocate Scale Image frame\n");
exit(1);
}
ScalePic->format = dst_pix_fmt;//pCodecCtx->pix_fmt;
ScalePic->width = out_width;
ScalePic->height = out_height;
int num_bytes2 = avpicture_get_size(dst_pix_fmt,out_width,out_height);
uint8_t* ScalePic_Buffer = (uint8_t *)av_malloc(num_bytes2*sizeof(int8_t));
ret = av_image_alloc(ScalePic->data,out_linesize,out_width,out_height,dst_pix_fmt, 1); //16
if(ret < 0) { this->Print2TextBox1(L"Could not allocate Scale picture buffer\n"); exit(1);}
out_bufsize = ret;
//-Create scaling context-OR CONVERTED TO DESTINATION FORMAT-----sws_scale
this->Print2TextBox1(L"Creating Scaling context...sws_scale\n");
sws_scale(sws_ctx, RawPic->data, in_linesize, 0, ScalePic->height, ScalePic->data, out_linesize);
//-----Write Scale Image to outputfile-
this->Print2TextBox1(L"Write Scale Image to outputfile..\n");
fwrite(ScalePic->data[0],1,out_bufsize,out_file);
//---Release all memory and close file--
fclose(in_file);
fclose(out_file);
av_freep(&RawPic->data[0]);
av_freep(&ScalePic->data[0]);
av_frame_free(&ScalePic);
av_frame_free(&RawPic);
SECOND--CONVERT to PLANAR TO JPEG FORMAT------(in Continuation to Above Code)
const char* myJpeg_file = "d:\\encoded_pic_444.jpg"; //Output JPEG
in_file = fopen("d:\\myHexFile_Planar.yuv", "rb"); //Input Planar File
if(in_file == NULL)
{
this->Print2TextBox1(L"File Opening error...!!");
exit(1);
}
else this->Print2TextBox1(L"YUV File Open Sucessfully...!!\n\n");
av_register_all(); // Loads the whole database of available codecs and formats.
pFormatCtx = avformat_alloc_context();
fmt = NULL;
fmt = av_guess_format("mjpeg",NULL,NULL);
pFormatCtx->oformat = fmt;
if (avio_open(&pFormatCtx->pb,myJpeg_file, AVIO_FLAG_READ_WRITE) < 0)
{
this->Print2TextBox1(L"Couldn't open output file.");
}
video_st = avformat_new_stream(pFormatCtx, 0);
if (video_st==NULL)
{
this->Print2TextBox1(L"avformat_new_stream.");
}
pCodecCtx = video_st->codec;
pCodecCtx->codec_id = fmt->video_codec;
pCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
pCodecCtx->pix_fmt = AV_PIX_FMT_YUVJ420P;
pCodecCtx->width = in_width;
pCodecCtx->height = in_height;
pCodecCtx->time_base.num = 1;
pCodecCtx->time_base.den = 1;//25;
this->Print2TextBox1(L"Conversion start\n");
//Output some information
av_dump_format(pFormatCtx, 0, myJpeg_file, 1);
// Determine if desired video encoder is installed
pCodec = avcodec_find_encoder(pCodecCtx->codec_id);
if (!pCodec)
{
this->Print2TextBox1(L"Codec not found.");
//return -1;
}
this->Print2TextBox1(L"Codec Identified done\n");
if (avcodec_open2(pCodecCtx, pCodec,NULL) < 0){
this->Print2TextBox1(L"Could not open codec.\n");
//return -1;
}
this->Print2TextBox1(L"Codec Open done\n");
//-----------------------------------------------
picture = av_frame_alloc();
size = avpicture_get_size(pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height);
picture_buf = (uint8_t *)av_malloc(size);
if (!picture_buf)
{ this->Print2TextBox1(L"Size Allocation error\n");
//return -1;
}
avpicture_fill((AVPicture *)picture, picture_buf, pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height);
this->Print2TextBox1(L"Write Header..");
avformat_write_header(pFormatCtx,NULL);
y_size = pCodecCtx->width * pCodecCtx->height;
av_new_packet(&pkt,y_size*3);
//-------------------------------------------------------420 Format
//Read YUV
if (fread(picture_buf, 1, y_size*3/2, in_file) <=0)
{
this->Print2TextBox1(L"Could not read input file.");
//return -1;
}
//--------------------------------------------input image format UYVY
picture->data[0] = picture_buf; // Y
picture->data[1] = picture_buf+ y_size; // U
picture->data[2] = picture_buf+ y_size*5/4; // V
this->Print2TextBox1(L" Encode the image..\n");
ret = avcodec_encode_video2(pCodecCtx, &pkt,picture, &got_picture);
if(ret < 0)
{
this->Print2TextBox1(L"Encode Error.\n");
//return -1;
}
if (got_picture==1)
{
pkt.stream_index = video_st->index;
//@@@@ PROBLEM IN THIS LINE BELOW WHEN RE-EXECUTE THE CODE @@@
ret = av_write_frame(pFormatCtx, &pkt);
}
av_free_packet(&pkt);
//Write Trailer
av_write_trailer(pFormatCtx);
this->Print2TextBox1(L"Encode Successful.\n");
if (video_st)
{
avcodec_close(video_st->codec);
av_free(picture);
av_free(picture_buf);
}
avio_close(pFormatCtx->pb);
avformat_free_context(pFormatCtx);
fclose(in_file);
it seems that some of memory is not yet free or when i am trying to re-use this above code in second time in a loop,
plz suggest/guide me where i am doing wrong and not freeing up the memory..?
i am trying to Display Image (Current/updated) on every button press in VC++2010
solved by renaming the "encoded_pic_420.jpg" file with some other name and display it on PictureBox
https://msdn.microsoft.com/en-us/library/windows/desktop/aa363851(v=vs.85).aspx