MFC下用sdl 显示bmp、rgb、yuv 分类： windows驱动程序WDM VC++ ffmpeg-SDL-VLC-Live555 DirectX 2013-08-16 18:11 1114人阅读 评论(0) 收藏
//#include "SDL.h"
#ifdef TEST_VGA16 /* Define this if you want to test VGA 16-color video modes */
#define NUM_COLORS 16
#else
#define NUM_COLORS 256
#endif
SDL_Surface *screen;
void display_bmp()
{
SDL_Surface *image;
char *file_name = "d:\\temp\\bao.bmp";
/* Load the BMP file into a surface */
image = SDL_LoadBMP(file_name);
if (image == NULL) {
// fprintf(stderr, "Couldn't load %s: %s\n", file_name, SDL_GetError());
return;
}
/*
* Palettized screen modes will have a default palette (a standard
* 8*8*4 colour cube), but if the image is palettized as well we can
* use that palette for a nicer colour matching
*/
if (image->format->palette && screen->format->palette)
{
SDL_SetColors(screen, image->format->palette->colors, 0,
image->format->palette->ncolors);
}
/* Blit onto the screen surface */
if(SDL_BlitSurface(image, NULL, screen, NULL) < 0)
fprintf(stderr, "BlitSurface error: %s\n", SDL_GetError());
SDL_UpdateRect(screen, 0, 0, image->w, image->h);
/* Free the allocated BMP surface */
SDL_FreeSurface(image);
}
CString str;
void CSdl_testDlg::OnButton1()
{
// TODO: Add your control notification handler code here
m_list.ResetContent();
SDL_Event event;
if((SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO)==-1)) {
str.Format("Could not initialize SDL: %s.\n", SDL_GetError());
m_list.AddString(str);
}
m_list.AddString("SDL initialized.");
/* Have a preference for 8-bit, but accept any depth */
screen = SDL_SetVideoMode(720, 576, 16, SDL_SWSURFACE|SDL_ANYFORMAT);
if ( screen == NULL ) {
str.Format( "Couldn't set 720*576 video mode: %s",SDL_GetError());
m_list.AddString(str);
}
str.Format("Set 720*576 at %d bits-per-pixel mode",
screen->format->BitsPerPixel);
m_list.AddString(str);
display_bmp();
/* Shutdown all subsystems */
//
m_list.AddString("Quiting.... press image!");
while (SDL_WaitEvent(&event) )
{
switch (event.type)
{
case SDL_MOUSEBUTTONDOWN:
SDL_Quit();
return ;
break;
case SDL_KEYDOWN:
if ( event.key.keysym.sym == SDLK_SPACE )
{
SDL_Quit();
return ;
break;
}
}
}
}
void CSdl_testDlg::OnButton2()
{
// TODO: Add your control notification handler code here
int i = 1;
int x, y;
int w = 720;
int h = 576;
char c = 'n';
FILE* fp;
char filename[64];
unsigned char* pY;
unsigned char* pU;
unsigned char* pV;
SDL_Rect rect;
m_list.ResetContent();
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
fprintf(stderr, "can not initialize SDL:%s\n", SDL_GetError());
exit(1);
}
atexit(SDL_Quit);
screen = SDL_SetVideoMode(720, 576, 32, SDL_SWSURFACE|SDL_ANYFORMAT);
if ( screen == NULL ) {
str.Format( "Couldn't set 720*576 video mode: %s",SDL_GetError());
m_list.AddString(str);
}
SDL_Overlay* overlay = SDL_CreateYUVOverlay(w, h, SDL_YV12_OVERLAY, screen);
if (overlay == NULL)
{
fprintf(stderr, "create overlay error!\n");
exit(1);
}
printf("w:%d, h:%d, planes:%d\n", overlay->w, overlay->h, overlay->planes);
printf("pitches:%d, %d, %d\n", overlay->pitches[0], overlay->pitches[1], overlay->pitches[2]);
pY = (unsigned char*)malloc(w*h);
pU = (unsigned char*)malloc(w*h/4);
pV = (unsigned char*)malloc(w*h/4);
SDL_LockSurface(screen);
SDL_LockYUVOverlay(overlay);
fp = fopen("d:\\temp\\1.yuv", "rb");
if (fp == NULL)
{
fprintf(stderr, "open file error!\n");
exit(1);
}
while (!feof(fp))
{
fread(pY, 1, w*h, fp);
fread(pU, 1, w*h/4, fp);
fread(pV, 1, w*h/4, fp);
memcpy(overlay->pixels[0], pY, w*h);
memcpy(overlay->pixels[1], pV, w*h/4);
memcpy(overlay->pixels[2], pU, w*h/4);
SDL_UnlockYUVOverlay(overlay);
SDL_UnlockSurface(screen);
rect.w = w;
rect.h = h;
rect.x = rect.y = 0;
SDL_DisplayYUVOverlay(overlay, &rect);
SDL_Delay(40);
i += 1;
str.Format("current frmcnt:%d",i);
m_list.AddString(str);
}
fclose(fp);
free(pY);
free(pU);
free(pV);
SDL_FreeYUVOverlay(overlay);
SDL_FreeSurface(screen);
}
//unsigned char buff[720*576*3];
unsigned int rgb[720*576];
void CSdl_testDlg::OnButton3()
{
// TODO: Add your control notification handler code here
m_list.ResetContent();
// SDL_Event event;
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
fprintf(stderr, "can not initialize SDL:%s\n", SDL_GetError());
exit(1);
}
atexit(SDL_Quit);
screen = SDL_SetVideoMode(720, 576, 32, SDL_SWSURFACE|SDL_ANYFORMAT);
if ( screen == NULL ) {
str.Format( "Couldn't set 720*576 video mode: %s",SDL_GetError());
m_list.AddString(str);
}
SDL_Surface *image;
Uint32 rmask, gmask, bmask, amask;
/* SDL interprets each pixel as a 32-bit number, so our masks must depend
on the endianness (byte order) of the machine */
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
image = SDL_CreateRGBSurface(SDL_SWSURFACE, 720, 576, 0,
rmask, gmask, bmask, amask);
if(image == NULL) {
fprintf(stderr, "CreateRGBSurface failed: %s\n", SDL_GetError());
exit(1);
}
// SDL_LockSurface(screen);
// SDL_LockSurface(image);
CBitmap m_bitmap;
HBITMAP m_hBitmap;
BITMAP bm;//存放位图信息的结构
m_hBitmap = (HBITMAP)::LoadImage(NULL,"d:\\temp\\bao.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE); //装载位图
if(m_bitmap.m_hObject)
m_bitmap.DeleteObject();
m_bitmap.Attach(m_hBitmap);//将句柄与CBitmap关联起来
m_bitmap.GetBitmap(&bm);
m_bitmap.GetBitmapBits(bm.bmHeight*bm.bmWidthBytes,rgb);
//
memcpy(screen->pixels,rgb,720*576*4);
// SDL_UnlockSurface(image);
// SDL_UnlockSurface(screen);
SDL_UpdateRect(screen, 0, 0, image->w, image->h);
/* Free the allocated BMP surface */
SDL_FreeSurface(image);
}
void CSdl_testDlg::OnButton4()
{
// TODO: Add your control notification handler code here
int i = 1;
int x, y;
int w = 720;
int h = 576;
char c = 'n';
FILE* fp;
char filename[64];
unsigned char* pY;
// unsigned char* pU;
// unsigned char* pV;
SDL_Rect rect;
m_list.ResetContent();
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
fprintf(stderr, "can not initialize SDL:%s\n", SDL_GetError());
exit(1);
}
atexit(SDL_Quit);
screen = SDL_SetVideoMode(720, 576, 32, SDL_SWSURFACE|SDL_ANYFORMAT);
if ( screen == NULL ) {
str.Format( "Couldn't set 720*576 video mode: %s",SDL_GetError());
m_list.AddString(str);
}
SDL_Overlay* overlay = SDL_CreateYUVOverlay(w, h, SDL_YUY2_OVERLAY, screen);
if (overlay == NULL)
{
fprintf(stderr, "create overlay error!\n");
exit(1);
}
printf("w:%d, h:%d, planes:%d\n", overlay->w, overlay->h, overlay->planes);
printf("pitches:%d, %d, %d\n", overlay->pitches[0], overlay->pitches[1], overlay->pitches[2]);
pY = (unsigned char*)malloc(w*h*2);
// pU = (unsigned char*)malloc(w*h/4);
// pV = (unsigned char*)malloc(w*h/4);
SDL_LockSurface(screen);
SDL_LockYUVOverlay(overlay);
fp = fopen("d:\\TEMP\\6082.dat", "rb");
if (fp == NULL)
{
fprintf(stderr, "open file error!\n");
exit(1);
}
while (!feof(fp))
{
fread(pY, 1, w*h*2, fp);
memcpy(overlay->pixels[0], pY, w*h*2);
SDL_UnlockYUVOverlay(overlay);
SDL_UnlockSurface(screen);
rect.w = w;
rect.h = h;
rect.x = rect.y = 0;
SDL_DisplayYUVOverlay(overlay, &rect);
SDL_Delay(40);
i += 1;
str.Format("current frmcnt:%d",i);
m_list.AddString(str);
}
fclose(fp);
free(pY);
// free(pU);
// free(pV);
SDL_FreeYUVOverlay(overlay);
SDL_FreeSurface(screen);
}
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