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Sur d’autres sites (8685)
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AV_PIX_FMT_YUVJ422P to jpeg conversion
4 mars 2019, par user3743908i am able to convert image from AV_PIX_FMT_YUVJ422P to jpeg format (below Code) but the resultant image having green shade on complete bottom half plz suggest where i am doing wrong.
Following step i have taken-
Initially i have AV_PIX_FMT_UYVY422 image from camera, i have convert it in AV_PIX_FMT_YUVJ422P format and able to see this image on http://rawpixels.net/ the parameters shown by website is size 2448X2050, Bpp1= 8,Bpp2 = 8 and Bpp3 = 8,alignment 1, SubSampling H =2, and SubSampling V = 1, format : YUV422P
so input image is Correct AV_PIX_FMT_YUVJ422P format. & also able to see on "YUV image viewer Software" using YUV422 format. -
Now i am trying to convert it in jpeg format using below Code and attached is the resultant Image having green shade on complete bottom half.
AVFormatContext* pFormatCtx;
AVOutputFormat* fmt;
AVStream* video_st;
AVCodecContext* pCodecCtx;
AVCodec* pCodec;
uint8_t* picture_buf;
AVFrame* picture;
AVPacket pkt;
int y_size;
int size;
int got_picture=0;
int ret=0;
int main( int argc, char* argv[] )
{
FILE *in_file = NULL;
unsigned int in_width = 2448;
unsigned int in_height = 2050;
const char* out_file = "encoded_pic.jpg";
in_file = fopen("c:\\test_Planar.yuv","rb");
if(in_file == NULL) { printf("\n\tFile Opening error...!!"); exit(1); }
else printf("\n\tYUV 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;
//------Output URL-------------------------
if (avio_open(&pFormatCtx->pb,out_file, AVIO_FLAG_READ_WRITE) < 0)
{
printf("Couldn't open output file.");
return -1;
}
video_st = avformat_new_stream(pFormatCtx, 0);
if (video_st==NULL) return -1;
pCodecCtx = video_st->codec;
pCodecCtx->codec_id = fmt->video_codec;
pCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
pCodecCtx->pix_fmt = AV_PIX_FMT_YUVJ422P;
//--------------------------MY SOURCE PIXEL FORMAT--------------
pCodecCtx->width = in_width;
pCodecCtx->height = in_height;
pCodecCtx->time_base.num = 1;
pCodecCtx->time_base.den = 1;//25;
//Output some information
av_dump_format(pFormatCtx, 0, out_file, 1);
// Determine if desired video encoder is installed
pCodec = avcodec_find_encoder(pCodecCtx->codec_id);
if (!pCodec)
{
printf("Codec not found.");
return -1;
}
printf("\nCodec Identified done\n");
if (avcodec_open2(pCodecCtx, pCodec,NULL) < 0){
printf("Could not open codec.\n");
return -1;
}
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) return -1;
avpicture_fill((AVPicture *)picture, picture_buf, pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height);
printf("\t\nWrite Header..");
avformat_write_header(pFormatCtx,NULL);
y_size = pCodecCtx->width * pCodecCtx->height;
av_new_packet(&pkt,y_size*3);
//Read YUV
if (fread(picture_buf, 1, y_size*3/2, in_file) <=0)
{
printf("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
//-----------------------------------------------
printf("\t\n Encode the image..\n");
ret = avcodec_encode_video2(pCodecCtx, &pkt,picture, &got_picture);
if(ret < 0)
{
printf("Encode Error.\n");
return -1;
}
if (got_picture==1)
{
pkt.stream_index = video_st->index;
ret = av_write_frame(pFormatCtx, &pkt);
}
av_free_packet(&pkt);
//Write Trailer
av_write_trailer(pFormatCtx);
printf("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);
printf("\n\tYUV File Close Sucessfully...!!");
}
Resultant output jpeg encoded image from yuvj422p image having green shade
-
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Packet (AV_PIX_FMT_UYVY422) to Planar (AV_PIX_FMT_YUVJ422P) format conversion
25 août 2017, par user3743908My image format is "YUV422_8_UYVY" which is packed AV_PIX_FMT_UYVY422 format, i am trying to convert it in Planar "AV_PIX_FMT_YUVJ422P", but not able to succeed yet, below is the code on which i am working.
error message : [swscaler @ 004b3fa0] deprecetd pixel format used, make sure you did set range correctly
resultant image (file ) having 0 k size
what would be the last argument of av_image_alloc() for conversion like 16,32 etc
my aim to convert packet yuv image in planar yuv format
static AVCodecContext *pCodecCtx;
static AVFormatContext *pFormatCtx;
static AVCodec *pCodec;
static AVOutputFormat* fmt;
static AVFrame *RawPic;
static AVFrame *ScalePic;
static AVPacket pkt;
static AVStream* video_st;
static FILE *file;
static struct SwsContext *sws_ctx;
enum AVPixelFormat src_pix_fmt = AV_PIX_FMT_UYVY422;
enum AVPixelFormat dst_pix_fmt = AV_PIX_FMT_YUVJ422P;
int main( ) {
FILE *in_file = NULL; //packed Source
FILE *out_file = NULL; //planar output
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
unsigned long int ret;
in_file = fopen("c:\\yuv422_8_uyvy.yuv","rb"); //Source Input File
if(in_file == NULL) { printf("\n\tinput File Opening error...!!"); exit(1); }
out_file = fopen("d:\\test_Planar.yuv", "wb"); //Source Input File
if(out_file == NULL) { printf("\n\toutput File Opening error...!!"); exit(1); }
else { printf("\n\tOutput File Created...!!"); }
//------Loads the whole database of available codecs and formats------
av_register_all();
printf("\t\n\tCodac database Loaded...\n");
//------Contex Variable assignment--------------------------------
pFormatCtx = avformat_alloc_context();
fmt = NULL;
fmt = av_guess_format("mjpeg",NULL,NULL);
pFormatCtx->oformat = fmt;
video_st = avformat_new_stream(pFormatCtx, 0); if (video_st==NULL) return -1;
pCodecCtx = video_st->codec;
pCodecCtx->codec_id = fmt->video_codec;
pCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
pCodecCtx->pix_fmt = src_pix_fmt;
printf("\t\n\tContex Variable assigned...\n");
//------Allocate Source Image Buffer--------------------------------
AVFrame *RawPic = av_frame_alloc();
if(!RawPic) { printf("\nCould not allocate Raw Image frame\n"); exit(1);}
RawPic->format = pCodecCtx->pix_fmt;
RawPic->width = in_width;
RawPic->height = in_height;
ret = av_image_alloc(RawPic->data,RawPic->linesize,in_width,in_height,src_pix_fmt, 16);
if(ret < 0) { printf("\nCould not allocate raw picture buffer\n"); exit(1);}
printf("\n\tAllocate Source Image Buffer");
//------Allocate Desitnation Image Buffer-------------------
AVFrame *ScalePic = av_frame_alloc();
if(!ScalePic) { printf("\nCould not allocate Scale Image frame\n"); exit(1);}
ScalePic->format = pCodecCtx->pix_fmt;
ScalePic->width = out_width;
ScalePic->height = out_height;
ret = av_image_alloc(ScalePic->data,ScalePic->linesize,out_width,out_height,dst_pix_fmt, 32);
if(ret < 0) { printf("\nCould not allocate Scale picture buffer\n"); exit(1);}
dst_bufsize = ret;
printf("\n\tAllocate Destination Image Buffer");
//------Create scaling context------------------------------sws_getContex
printf("\t\n\tCreating Scaling context..[sws_getContext]\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) { printf("\nContext Error..\n"); }
printf("\t\n\tScaling context...Created\n");
//------Create scaling context---OR CONVERTED TO DESTINATION FORMAT--
sws_scale(sws_ctx, RawPic->data, RawPic->linesize, 0, in_height, ScalePic->data, ScalePic->linesize);
printf("\t\n\tCreating Scaling context...sws_scale...done\n");
int num_bytes = avpicture_get_size(src_pix_fmt,in_width,in_height);
uint8_t* ScalePic_Buffer = (uint8_t *)av_malloc(num_bytes*sizeof(int8_t));
avpicture_fill((AVPicture*)ScalePic,ScalePic_Buffer,AV_PIX_FMT_YUVJ422P,out_width,out_height);
//-----Write Scale Image to outputfile----------------------------
fwrite(ScalePic->data,1,dst_bufsize,out_file);
//---Release all memory and close file----------------------------------
fclose(in_file);
fclose(out_file);
avcodec_close(pCodecCtx);
av_free(pCodecCtx);
av_freep(&RawPic->data[0]);
av_frame_free(&RawPic);
av_freep(&ScalePic->data[0]);
av_frame_free(&ScalePic);
av_frame_free(&RawPic);
printf("\n\n");
system("PAUSE");
exit(1);
} -
swscale/aarch64/output.S : refactor ff_yuv2plane1_8_neon
31 janvier, par Krzysztof Pyrkoszswscale/aarch64/output.S : refactor ff_yuv2plane1_8_neon
The benchmarks (before vs after) were gathered using
./tests/checkasm/checkasm —test=sw_scale —bench —runs=6 | grep yuv2yuv1A78 before :
yuv2yuv1_0_512_accurate_c : 2039.5 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 385.5 ( 5.29x)
yuv2yuv1_0_512_approximate_c : 2110.5 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 385.5 ( 5.47x)
yuv2yuv1_3_512_accurate_c : 2061.2 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 381.2 ( 5.41x)
yuv2yuv1_3_512_approximate_c : 2099.2 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 381.2 ( 5.51x)
yuv2yuv1_8_512_accurate_c : 2054.2 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 385.5 ( 5.33x)
yuv2yuv1_8_512_approximate_c : 2112.2 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 385.5 ( 5.48x)
yuv2yuv1_11_512_accurate_c : 2036.0 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 381.2 ( 5.34x)
yuv2yuv1_11_512_approximate_c : 2115.0 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 381.2 ( 5.55x)
yuv2yuv1_16_512_accurate_c : 2066.5 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 385.5 ( 5.36x)
yuv2yuv1_16_512_approximate_c : 2100.8 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 385.5 ( 5.45x)
yuv2yuv1_19_512_accurate_c : 2059.8 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 381.2 ( 5.40x)
yuv2yuv1_19_512_approximate_c : 2102.8 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 381.2 ( 5.52x)After :
yuv2yuv1_0_512_accurate_c : 2206.0 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 139.2 (15.84x)
yuv2yuv1_0_512_approximate_c : 2050.0 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 139.2 (14.72x)
yuv2yuv1_3_512_accurate_c : 2205.2 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 138.0 (15.98x)
yuv2yuv1_3_512_approximate_c : 2052.5 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 138.0 (14.87x)
yuv2yuv1_8_512_accurate_c : 2171.0 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 139.2 (15.59x)
yuv2yuv1_8_512_approximate_c : 2064.2 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 139.2 (14.82x)
yuv2yuv1_11_512_accurate_c : 2164.8 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 138.0 (15.69x)
yuv2yuv1_11_512_approximate_c : 2048.8 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 138.0 (14.85x)
yuv2yuv1_16_512_accurate_c : 2154.5 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 139.2 (15.47x)
yuv2yuv1_16_512_approximate_c : 2047.2 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 139.2 (14.70x)
yuv2yuv1_19_512_accurate_c : 2144.5 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 138.0 (15.54x)
yuv2yuv1_19_512_approximate_c : 2046.0 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 138.0 (14.83x)A72 before :
yuv2yuv1_0_512_accurate_c : 3779.8 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 527.8 ( 7.16x)
yuv2yuv1_0_512_approximate_c : 4128.2 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 528.2 ( 7.81x)
yuv2yuv1_3_512_accurate_c : 3836.2 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 527.0 ( 7.28x)
yuv2yuv1_3_512_approximate_c : 3991.0 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 526.8 ( 7.58x)
yuv2yuv1_8_512_accurate_c : 3732.8 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 525.5 ( 7.10x)
yuv2yuv1_8_512_approximate_c : 4060.0 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 527.0 ( 7.70x)
yuv2yuv1_11_512_accurate_c : 3836.2 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 530.0 ( 7.24x)
yuv2yuv1_11_512_approximate_c : 4014.0 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 530.0 ( 7.57x)
yuv2yuv1_16_512_accurate_c : 3726.2 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 525.5 ( 7.09x)
yuv2yuv1_16_512_approximate_c : 4114.2 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 526.2 ( 7.82x)
yuv2yuv1_19_512_accurate_c : 3812.2 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 530.0 ( 7.19x)
yuv2yuv1_19_512_approximate_c : 4012.2 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 530.0 ( 7.57x)After :
yuv2yuv1_0_512_accurate_c : 3716.8 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 215.1 (17.28x)
yuv2yuv1_0_512_approximate_c : 3877.8 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 222.8 (17.40x)
yuv2yuv1_3_512_accurate_c : 3717.1 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 217.8 (17.06x)
yuv2yuv1_3_512_approximate_c : 3801.6 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 220.3 (17.25x)
yuv2yuv1_8_512_accurate_c : 3716.6 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 213.8 (17.38x)
yuv2yuv1_8_512_approximate_c : 3831.8 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 218.1 (17.57x)
yuv2yuv1_11_512_accurate_c : 3717.1 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 219.1 (16.97x)
yuv2yuv1_11_512_approximate_c : 3801.6 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 216.1 (17.59x)
yuv2yuv1_16_512_accurate_c : 3716.6 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 213.6 (17.40x)
yuv2yuv1_16_512_approximate_c : 3831.6 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 215.1 (17.82x)
yuv2yuv1_19_512_accurate_c : 3717.1 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 223.8 (16.61x)
yuv2yuv1_19_512_approximate_c : 3801.6 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 219.1 (17.35x)x13s before :
yuv2yuv1_0_512_accurate_c : 1435.1 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 221.1 ( 6.49x)
yuv2yuv1_0_512_approximate_c : 1405.4 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 219.1 ( 6.41x)
yuv2yuv1_3_512_accurate_c : 1418.6 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 215.9 ( 6.57x)
yuv2yuv1_3_512_approximate_c : 1405.9 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 224.1 ( 6.27x)
yuv2yuv1_8_512_accurate_c : 1433.9 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 218.6 ( 6.56x)
yuv2yuv1_8_512_approximate_c : 1412.9 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 218.9 ( 6.46x)
yuv2yuv1_11_512_accurate_c : 1449.1 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 217.6 ( 6.66x)
yuv2yuv1_11_512_approximate_c : 1410.9 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 221.1 ( 6.38x)
yuv2yuv1_16_512_accurate_c : 1402.1 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 214.6 ( 6.53x)
yuv2yuv1_16_512_approximate_c : 1422.4 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 222.9 ( 6.38x)
yuv2yuv1_19_512_accurate_c : 1421.6 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 217.4 ( 6.54x)
yuv2yuv1_19_512_approximate_c : 1421.6 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 221.4 ( 6.42x)After :
yuv2yuv1_0_512_accurate_c : 1413.6 ( 1.00x)
yuv2yuv1_0_512_accurate_neon : 80.6 (17.53x)
yuv2yuv1_0_512_approximate_c : 1455.6 ( 1.00x)
yuv2yuv1_0_512_approximate_neon : 80.6 (18.05x)
yuv2yuv1_3_512_accurate_c : 1429.1 ( 1.00x)
yuv2yuv1_3_512_accurate_neon : 77.4 (18.47x)
yuv2yuv1_3_512_approximate_c : 1462.6 ( 1.00x)
yuv2yuv1_3_512_approximate_neon : 80.6 (18.14x)
yuv2yuv1_8_512_accurate_c : 1425.4 ( 1.00x)
yuv2yuv1_8_512_accurate_neon : 77.9 (18.30x)
yuv2yuv1_8_512_approximate_c : 1436.6 ( 1.00x)
yuv2yuv1_8_512_approximate_neon : 80.9 (17.76x)
yuv2yuv1_11_512_accurate_c : 1429.4 ( 1.00x)
yuv2yuv1_11_512_accurate_neon : 76.1 (18.78x)
yuv2yuv1_11_512_approximate_c : 1447.1 ( 1.00x)
yuv2yuv1_11_512_approximate_neon : 78.4 (18.46x)
yuv2yuv1_16_512_accurate_c : 1439.9 ( 1.00x)
yuv2yuv1_16_512_accurate_neon : 77.6 (18.55x)
yuv2yuv1_16_512_approximate_c : 1422.1 ( 1.00x)
yuv2yuv1_16_512_approximate_neon : 78.1 (18.20x)
yuv2yuv1_19_512_accurate_c : 1447.1 ( 1.00x)
yuv2yuv1_19_512_accurate_neon : 78.1 (18.52x)
yuv2yuv1_19_512_approximate_c : 1474.4 ( 1.00x)
yuv2yuv1_19_512_approximate_neon : 78.1 (18.87x)Signed-off-by : Martin Storsjö <martin@martin.st>
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