mpv/libvo/vo_jpeg.c

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5.6 KiB
C
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#define DISP
/*
* vo_jpeg.c, JPEG Renderer for Mplayer
*
* Copyright 2002 by Pontscho (pontscho@makacs.poliod.hu)
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <jpeglib.h>
#include "config.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "sub.h"
#include "../postproc/swscale.h"
#include "../postproc/rgb2rgb.h"
static vo_info_t info=
{
"JPEG file",
"jpeg",
"Zoltan Ponekker (pontscho@makacs.poliod.hu)",
""
};
LIBVO_EXTERN (jpeg)
#define RGB 0
#define BGR 1
extern int verbose;
static int image_width;
static int image_height;
static int image_format;
static uint8_t *image_data=NULL;
static unsigned int scale_srcW=0, scale_srcH=0;
int jpeg_baseline = 1;
int jpeg_progressive_mode = 0;
int jpeg_optimize = 100;
int jpeg_smooth = 0;
int jpeg_quality = 75;
char * jpeg_outdir = ".";
#define bpp 24
static int cspace=RGB;
static int framenum=0;
static void draw_alpha(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
{
vo_draw_alpha_rgb24(w, h, src, srca, stride, image_data + 3 * (y0 * image_width + x0), 3 * image_width);
}
static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t fullscreen, char *title, uint32_t format)
{
if ( fullscreen&0x04 && ( width != d_width || height != d_height )&&( ( format == IMGFMT_YV12 ) ) )
{
// software scaling
image_width=(d_width + 7) & ~7;
image_height=d_height;
scale_srcW=width;
scale_srcH=height;
SwScale_Init();
}
else
{
image_height=height;
image_width=width;
}
image_format=format;
switch(format)
{
case IMGFMT_BGR32:
cspace=BGR;
image_data=malloc( image_width * image_height * 3 );
break;
case IMGFMT_BGR24:
cspace=BGR;
image_data=malloc( image_width * image_height * 3 );
break;
case IMGFMT_RGB24:
cspace=RGB;
break;
case IMGFMT_IYUV:
case IMGFMT_I420:
case IMGFMT_YV12:
cspace=BGR;
yuv2rgb_init( bpp,MODE_BGR );
image_data=malloc( image_width * image_height * 3 );
break;
default:
return 1;
}
return 0;
}
static uint32_t jpeg_write( uint8_t * name,uint8_t * buffer )
{
FILE * o;
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
JSAMPROW row_pointer[1];
int row_stride;
if ( !buffer ) return 1;
if ( (o=fopen( name,"wb" )) == NULL ) return 1;
cinfo.err=jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_stdio_dest( &cinfo,o );
cinfo.image_width=image_width;
cinfo.image_height=image_height;
cinfo.input_components=bpp / 8;
cinfo.in_color_space=JCS_RGB;
jpeg_set_defaults( &cinfo );
jpeg_set_quality( &cinfo,jpeg_quality,jpeg_baseline );
cinfo.optimize_coding=jpeg_optimize;
cinfo.smoothing_factor=jpeg_smooth;
if ( jpeg_progressive_mode ) jpeg_simple_progression( &cinfo );
jpeg_start_compress( &cinfo,TRUE );
row_stride = image_width * ( bpp / 8 );
while ( cinfo.next_scanline < cinfo.image_height )
{
row_pointer[0]=&buffer[ cinfo.next_scanline * row_stride ];
(void)jpeg_write_scanlines( &cinfo,row_pointer,1 );
}
jpeg_finish_compress( &cinfo );
fclose( o );
jpeg_destroy_compress( &cinfo );
return 0;
}
static uint32_t draw_frame(uint8_t * src[])
{
char buf[256];
uint8_t *dst= src[0];
snprintf (buf, 256, "%s/%08d.jpg", jpeg_outdir, ++framenum);
if ( image_format == IMGFMT_BGR32 )
{
rgb32to24( src[0],image_data,image_width * image_height * 4 );
rgb24tobgr24( image_data,image_data,image_width * image_height * 3 );
dst=image_data;
}
if ( image_format == IMGFMT_BGR24 )
{
rgb24tobgr24( src[0],image_data,image_width * image_height * 3 );
dst=image_data;
}
return jpeg_write( buf,dst );
}
static void draw_osd(void)
{
vo_draw_text(image_width, image_height, draw_alpha);
}
static void flip_page (void)
{
char buf[256];
if((image_format == IMGFMT_YV12) || (image_format == IMGFMT_IYUV) || (image_format == IMGFMT_I420))
{
snprintf (buf, 256, "%s/%08d.jpg", jpeg_outdir, ++framenum);
jpeg_write( buf,image_data );
}
}
static uint32_t draw_slice( uint8_t *src[],int stride[],int w,int h,int x,int y )
{
if (scale_srcW)
{
uint8_t *dst[3]={image_data, NULL, NULL};
SwScale_YV12slice(src,stride,y,h,
dst, image_width*((bpp+7)/8), bpp,
scale_srcW, scale_srcH, image_width, image_height);
}
else
{
uint8_t *dst=image_data + (image_width * y + x) * (bpp/8);
yuv2rgb(dst,src[0],src[1],src[2],w,h,image_width*(bpp/8),stride[0],stride[1]);
}
return 0;
}
static uint32_t query_format(uint32_t format)
{
switch( format )
{
case IMGFMT_IYUV:
case IMGFMT_I420:
case IMGFMT_YV12:
case IMGFMT_BGR|24:
case IMGFMT_BGR|32:
return VFCAP_CSP_SUPPORTED;
case IMGFMT_RGB|24:
return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW|VFCAP_OSD;
}
return 0;
}
static void uninit(void)
{
if ( image_data )
{
free( image_data );
image_data=NULL;
}
}
static void check_events(void)
{
}
static uint32_t preinit(const char *arg)
{
if(arg)
{
printf("JPEG Unknown subdevice: %s\n",arg);
return ENOSYS;
}
return 0;
}
static uint32_t control(uint32_t request, void *data, ...)
{
switch (request)
{
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
}
return VO_NOTIMPL;
}