/*

* Copyright 2014, Vidar Hokstad <vidar@hokstad.com>

*

* Licensed under the LGPL - see LICENSE

*

*/

#include "SDL_vnc.h"

#ifdef DEBUG

#define DBMESSAGE printf

#else

#define DBMESSAGE //

#endif

#define CHECKED_READ(vnc, dest, len, message) { \

int result = Recv(vnc->socket, dest, len, 0); \

if (result!=len) { \

printf("Error reading %s. Got %i of %i bytes.\n", message, result, len); \

return 0; \

} \

}

void vnc_to_sdl_rect(tSDL_vnc_rect * src, SDL_Rect * dest);

void GrowUpdateRegion(tSDL_vnc *vnc, SDL_Rect *trec);

int read_raw(tSDL_vnc * vnc, tSDL_vnc_rect rect) {

SDL_Rect trec;

vnc_to_sdl_rect(&rect, &trec);

SDL_LockMutex(vnc->mutex);

SDL_LockSurface(vnc->framebuffer);

uint32_t pitch = vnc->framebuffer->pitch/4;

uint32_t * dest = (uint32_t *)vnc->framebuffer->pixels + (rect.y * pitch) + rect.x;

uint32_t len = rect.width * rect.height * 4;

DBMESSAGE("Reading %ld bytes straight into buffer", len);

CHECKED_READ(vnc, dest, len, "framebuffer");

GrowUpdateRegion(vnc,&trec);

SDL_UnlockSurface(vnc->framebuffer);

SDL_UnlockMutex(vnc->mutex);

return 1;

}

void blit_raw(tSDL_vnc * vnc, tSDL_vnc_rect rect)

{

SDL_Rect trec;

vnc_to_sdl_rect(&rect, &trec);

SDL_LockMutex(vnc->mutex);

SDL_LockSurface(vnc->framebuffer);

uint32_t * src = vnc->rawbuffer;

uint32_t srcpitch = rect.width;

uint32_t len = srcpitch * 4;

uint32_t pitch = vnc->framebuffer->pitch/4;

uint32_t * dest = (uint32_t *)vnc->framebuffer->pixels + (rect.y * pitch) + rect.x;

if (srcpitch == pitch) {

/* full screen, or at least full width */

memcpy(dest, src, len * rect.height);

} else {

uint32_t * end = dest + (pitch*rect.height);

while (dest < end) {

memcpy(dest, src, len);

dest += pitch;

src += srcpitch;

}

}

GrowUpdateRegion(vnc,&trec);

SDL_UnlockSurface(vnc->framebuffer);

SDL_UnlockMutex(vnc->mutex);

}