📄 bgr2rgb.c
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/* bgr2rgb -> flips the frame as fast as possible (1 bgr field @ time) *//* Gleicon S. Moraes (gleicon@terra.com.br) *//* __asm__() fix Marco Aurelio Casaroli (nada@onda.com.br) *//* usage: bgr2rgb(unsigned char *buffer, unsigned int size); compiler keys: NONE m0f0 */#define bgr2rgb(a, b) __bgr2rgb_16(a, b) void __bgr2rgb_16 (unsigned char *b, unsigned int tam) { __asm__ __volatile__ (" xorl %%ebx, %%ebx label: movb (%1, %%ebx), %%al movb 2(%1, %%ebx), %%ah movb %%al, 2(%0, %%ebx) movb %%ah,(%0, %%ebx) addl $3, %%ebx decl %2 jnz label" : "=r"(b) : "r" (b), "r" (tam) : "al", "ah", "ebx"); /* modify */}
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