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Setting up tickertape parameter

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This commit is contained in:
Abhinav Shukla 2017-02-09 02:30:51 +05:30
parent 5933194570
commit 3278b31a8f
2 changed files with 89 additions and 5 deletions
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92
src/lib_ccx/hardsubx_decoder.c
View File

@ -260,22 +260,106 @@ void _display_frame(struct lib_hardsubx_ctx *ctx, AVFrame *frame, int width, int
pixDestroy(&pixd);
}
char* _process_frame_tickertext(struct lib_hardsubx_ctx *ctx, AVFrame *frame, int width, int height, int index)
{
PIX *im;
PIX *edge_im;
PIX *lum_im;
PIX *feat_im;
char *subtitle_text=NULL;
im = pixCreate(width,height,32);
lum_im = pixCreate(width,height,32);
feat_im = pixCreate(width,height,32);
int i,j;
for(i=(92*height)/100;i<height;i++)
{
for(j=0;j<width;j++)
{
int p=j*3+i*frame->linesize[0];
int r=frame->data[0][p];
int g=frame->data[0][p+1];
int b=frame->data[0][p+2];
pixSetRGBPixel(im,j,i,r,g,b);
float L,A,B;
rgb_to_lab((float)r,(float)g,(float)b,&L,&A,&B);
if(L > ctx->lum_thresh)
pixSetRGBPixel(lum_im,j,i,255,255,255);
else
pixSetRGBPixel(lum_im,j,i,0,0,0);
}
}
//Handle the edge image
edge_im = pixCreate(width,height,8);
edge_im = pixConvertRGBToGray(im,0.0,0.0,0.0);
edge_im = pixSobelEdgeFilter(edge_im, L_VERTICAL_EDGES);
edge_im = pixDilateGray(edge_im, 21, 11);
edge_im = pixThresholdToBinary(edge_im,50);
for(i=92*(height/100);i<height;i++)
{
for(j=0;j<width;j++)
{
unsigned int p1,p2,p3;
pixGetPixel(edge_im,j,i,&p1);
// pixGetPixel(pixd,j,i,&p2);
pixGetPixel(lum_im,j,i,&p3);
if(p1==0&&p3>0)
pixSetRGBPixel(feat_im,j,i,255,255,255);
else
pixSetRGBPixel(feat_im,j,i,0,0,0);
}
}
// Tesseract OCR for the ticker text here
subtitle_text = get_ocr_text_simple(ctx, lum_im);
char write_path[100];
sprintf(write_path,"./lum_im%04d.jpg",index);
pixWrite(write_path,lum_im,IFF_JFIF_JPEG);
sprintf(write_path,"./im%04d.jpg",index);
pixWrite(write_path,im,IFF_JFIF_JPEG);
pixDestroy(&lum_im);
pixDestroy(&im);
pixDestroy(&edge_im);
pixDestroy(&feat_im);
return subtitle_text;
}
int hardsubx_process_frames_tickertext(struct lib_hardsubx_ctx *ctx, struct encoder_ctx *enc_ctx)
{
// Search for ticker text at the bottom of the screen, such as in Russia TV1 or stock prices
int got_frame;
int cur_sec,total_sec,progress;
printf("%s\n", language[10]);
printf("%s\n", language[11]);
printf("%s\n", language[12]);
int frame_number = 0;
char *ticker_text = NULL;
while(av_read_frame(ctx->format_ctx, &ctx->packet)>=0)
{
if(ctx->packet.stream_index == ctx->video_stream_id)
{
frame_number++;
//Decode the video stream packet
avcodec_decode_video2(ctx->codec_ctx, ctx->frame, &got_frame, &ctx->packet);
if(got_frame)
if(got_frame && frame_number % 1000 == 0)
{
// sws_scale is used to convert the pixel format to RGB24 from all other cases
sws_scale(
ctx->sws_ctx,
(uint8_t const * const *)ctx->frame->data,
ctx->frame->linesize,
0,
ctx->codec_ctx->height,
ctx->rgb_frame->data,
ctx->rgb_frame->linesize
);
ticker_text = _process_frame_tickertext(ctx,ctx->rgb_frame,ctx->codec_ctx->width,ctx->codec_ctx->height,frame_number);
printf("frame_number: %d\n", frame_number);
if(strlen(ticker_text)>0)printf("%s\n", ticker_text);
cur_sec = (int)convert_pts_to_s(ctx->packet.pts, ctx->format_ctx->streams[ctx->video_stream_id]->time_base);
total_sec = (int)convert_pts_to_s(ctx->format_ctx->duration, AV_TIME_BASE_Q);
progress = (cur_sec*100)/total_sec;

2
src/lib_ccx/params.c
View File

@ -1901,7 +1901,7 @@ int parse_parameters (struct ccx_s_options *opt, int argc, char *argv[])
}
continue;
}
if (strcmp (argv[i],"-tickertext")==0)
if (strcmp (argv[i],"-tickertext")==0 || strcmp (argv[i],"-tickertape")==0)
{
opt->tickertext = 1;
continue;