diff options
Diffstat (limited to 'TOOLS/mwallp/jpeg.c')
-rw-r--r-- | TOOLS/mwallp/jpeg.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/TOOLS/mwallp/jpeg.c b/TOOLS/mwallp/jpeg.c deleted file mode 100644 index 7a3b678434..0000000000 --- a/TOOLS/mwallp/jpeg.c +++ /dev/null @@ -1,147 +0,0 @@ -// based on vd_ijpg.c by Pontscho - -#include <stdio.h> -#include <stdlib.h> - -#include <jpeglib.h> -#define UINT16 IJPG_UINT16 -#define INT16 IJPG_INT16 - -#include <setjmp.h> - -#include <inttypes.h> - -#include "img_format.h" - -#include "swscale.h" -#include "rgb2rgb.h" - -static struct SwsContext *swsContext=NULL; - -typedef struct -{ - struct jpeg_source_mgr pub; - unsigned char * inbuf; - int bufsize; -} my_source_mgr; - -typedef my_source_mgr * my_src_ptr; - -METHODDEF(void) init_source (j_decompress_ptr cinfo) -{ -} - -METHODDEF(boolean) fill_input_buffer (j_decompress_ptr cinfo) -{ - my_src_ptr src = (my_src_ptr) cinfo->src; - size_t nbytes; - src->pub.next_input_byte = src->inbuf; - src->pub.bytes_in_buffer = src->bufsize; - return TRUE; -} - -METHODDEF(void) skip_input_data (j_decompress_ptr cinfo, long num_bytes) -{ - my_src_ptr src = (my_src_ptr) cinfo->src; - - if (num_bytes > 0) - { - while (num_bytes > (long) src->pub.bytes_in_buffer) - { - num_bytes -= (long) src->pub.bytes_in_buffer; - (void) fill_input_buffer(cinfo); - } - src->pub.next_input_byte += (size_t) num_bytes; - src->pub.bytes_in_buffer -= (size_t) num_bytes; - } -} - -METHODDEF(void) term_source (j_decompress_ptr cinfo) { } - -GLOBAL(void) jpeg_buf_src ( j_decompress_ptr cinfo, char * inbuf,int bufsize ) -{ - my_src_ptr src; - if (cinfo->src == NULL) cinfo->src=malloc( sizeof( my_source_mgr ) ); - src = (my_src_ptr) cinfo->src; - src->pub.init_source = init_source; - src->pub.fill_input_buffer = fill_input_buffer; - src->pub.skip_input_data = skip_input_data; - src->pub.resync_to_restart = jpeg_resync_to_restart; - src->pub.term_source = term_source; - src->inbuf = inbuf; - src->bufsize=bufsize; - src->pub.bytes_in_buffer = 0; - src->pub.next_input_byte = NULL; -} - -struct my_error_mgr -{ - struct jpeg_error_mgr pub; - jmp_buf setjmp_buffer; -}; - -typedef struct my_error_mgr * my_error_ptr; - -METHODDEF(void) my_error_exit (j_common_ptr cinfo) -{ - my_error_ptr myerr=(my_error_ptr) cinfo->err; - (*cinfo->err->output_message) (cinfo); - longjmp(myerr->setjmp_buffer, 1); -} - -static struct jpeg_decompress_struct cinfo; -static struct my_error_mgr jerr; - -// decode a frame -int decode_jpeg(void* data,int len,char* dbuffer,int dwidth,int dheight, int dstride,int dbpp){ - int width,height,depth,i; - int row_stride; - unsigned char* img=NULL; - int in_fmt=0; - - if ( len <= 0 ) return 0; // skipped frame - - cinfo.err=jpeg_std_error( &jerr.pub ); - jerr.pub.error_exit=my_error_exit; - if( setjmp( jerr.setjmp_buffer ) ) - { - return 0; - } - - jpeg_create_decompress( &cinfo ); - jpeg_buf_src( &cinfo,data,len ); - jpeg_read_header( &cinfo,TRUE ); - width=cinfo.image_width; - height=cinfo.image_height; - jpeg_start_decompress( &cinfo ); - depth=cinfo.output_components * 8; - - switch( depth ) { - case 8: in_fmt=IMGFMT_Y8;break; - case 24: in_fmt=IMGFMT_RGB|24;break; - default: return 0; - } - - row_stride=cinfo.output_width * cinfo.output_components; - img=malloc(row_stride * (height+1)); - - for ( i=0;i < height;i++ ){ -// char* row=dbuffer+i*dstride; - char* row=img+row_stride*i; - jpeg_read_scanlines( &cinfo,(JSAMPLE**)&row,1 ); - } - - jpeg_finish_decompress(&cinfo); - jpeg_destroy_decompress(&cinfo); - - swsContext= sws_getContext(width,height, in_fmt, - dwidth,dheight, IMGFMT_BGR|dbpp, SWS_BICUBIC, NULL, NULL, NULL); - - sws_scale(swsContext,&img,&row_stride,0,height,&dbuffer, &dstride); - - sws_freeContext(swsContext); - - free(img); - - return 1; -} |