Exemplo n.º 1
0
/**
 * Apply the Scale2x effect on a bitmap.
 * The destination bitmap is filled with the scaled version of the source bitmap.
 * The source bitmap isn't modified.
 * The destination bitmap must be manually allocated before calling the function,
 * note that the resulting size is exactly 2x2 times the size of the source bitmap.
 * \param void_dst Pointer at the first pixel of the destination bitmap.
 * \param dst_slice Size in bytes of a destination bitmap row.
 * \param void_src Pointer at the first pixel of the source bitmap.
 * \param src_slice Size in bytes of a source bitmap row.
 * \param pixel Bytes per pixel of the source and destination bitmap.
 * \param width Horizontal size in pixels of the source bitmap.
 * \param height Vertical size in pixels of the source bitmap.
 */
static void scale2x(void* void_dst, unsigned dst_slice, const void* void_src, unsigned src_slice, unsigned pixel, unsigned width, unsigned height)
{
	unsigned char* dst = (unsigned char*)void_dst;
	const unsigned char* src = (const unsigned char*)void_src;
	unsigned count;

	assert(height >= 2);

	count = height;

	stage_scale2x(SCDST(0), SCDST(1), SCSRC(0), SCSRC(0), SCSRC(1), pixel, width);

	dst = SCDST(2);

	count -= 2;
	while (count) {
		stage_scale2x(SCDST(0), SCDST(1), SCSRC(0), SCSRC(1), SCSRC(2), pixel, width);

		dst = SCDST(2);
		src = SCSRC(1);

		--count;
	}

	stage_scale2x(SCDST(0), SCDST(1), SCSRC(0), SCSRC(1), SCSRC(1), pixel, width);

#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
	scale2x_mmx_emms();
#endif
}
Exemplo n.º 2
0
/**
 * Apply the Scale2x effect on a bitmap.
 * The destination bitmap is filled with the scaled version of the source bitmap.
 * The source bitmap isn't modified.
 * The destination bitmap must be manually allocated before calling the function,
 * note that the resulting size is exactly 2x2 times the size of the source bitmap.
 * \param void_dst Pointer at the first pixel of the destination bitmap.
 * \param dst_slice Size in bytes of a destination bitmap row.
 * \param void_src Pointer at the first pixel of the source bitmap.
 * \param src_slice Size in bytes of a source bitmap row.
 * \param pixel Bytes per pixel of the source and destination bitmap.
 * \param width Horizontal size in pixels of the source bitmap.
 * \param height Vertical size in pixels of the source bitmap.
 */
void MDP_FNCALL scale2x(void* void_dst, unsigned int dst_slice,
			const void* void_src, unsigned int src_slice,
			unsigned int pixel, unsigned int width, unsigned int height)
{
	unsigned char* dst = (unsigned char*)void_dst;
	const unsigned char* src = (const unsigned char*)void_src;
	unsigned int count;
	
	assert(height >= 2);
	
	count = height;
	
	stage_scale2x(SCDST(0), SCDST(1), SCSRC(0), SCSRC(0), SCSRC(1), pixel, width);
	
	dst = SCDST(2);
	
	count -= 2;
	while (count)
	{
		stage_scale2x(SCDST(0), SCDST(1), SCSRC(0), SCSRC(1), SCSRC(2), pixel, width);
		
		dst = SCDST(2);
		src = SCSRC(1);
		
		--count;
	}
	
	stage_scale2x(SCDST(0), SCDST(1), SCSRC(0), SCSRC(1), SCSRC(1), pixel, width);
}
Exemplo n.º 3
0
/**
 * Apply the Scale4x effect on a bitmap.
 * The destination bitmap is filled with the scaled version of the source bitmap.
 * The source bitmap isn't modified.
 * The destination bitmap must be manually allocated before calling the function,
 * note that the resulting size is exactly 4x4 times the size of the source bitmap.
 * \note This function requires also a small buffer bitmap used internally to store
 * intermediate results. This bitmap must have at least an horizontal size in bytes of 2*width*pixel,
 * and a vertical size of 6 rows. The memory of this buffer must not be allocated
 * in video memory because it's also read and not only written. Generally
 * a heap (malloc) or a stack (alloca) buffer is the best choices.
 * \param void_dst Pointer at the first pixel of the destination bitmap.
 * \param dst_slice Size in bytes of a destination bitmap row.
 * \param void_mid Pointer at the first pixel of the buffer bitmap.
 * \param mid_slice Size in bytes of a buffer bitmap row.
 * \param void_src Pointer at the first pixel of the source bitmap.
 * \param src_slice Size in bytes of a source bitmap row.
 * \param pixel Bytes per pixel of the source and destination bitmap.
 * \param width Horizontal size in pixels of the source bitmap.
 * \param height Vertical size in pixels of the source bitmap.
 */
static void scale4x_buf(void* void_dst, unsigned dst_slice, void* void_mid, unsigned mid_slice, const void* void_src, unsigned src_slice, unsigned pixel, unsigned width, unsigned height)
{
	unsigned char* dst = (unsigned char*)void_dst;
	const unsigned char* src = (const unsigned char*)void_src;
	unsigned count;
	unsigned char* mid[6];

	assert(height >= 4);

	count = height;

	/* set the 6 buffer pointers */
	mid[0] = (unsigned char*)void_mid;
	mid[1] = mid[0] + mid_slice;
	mid[2] = mid[1] + mid_slice;
	mid[3] = mid[2] + mid_slice;
	mid[4] = mid[3] + mid_slice;
	mid[5] = mid[4] + mid_slice;

	while (count) {
		unsigned char* tmp;

		stage_scale2x(SCMID(4), SCMID(5), SCSRC(2), SCSRC(3), SCSRC(4), pixel, width);
		stage_scale4x(SCDST(0), SCDST(1), SCDST(2), SCDST(3), SCMID(1), SCMID(2), SCMID(3), SCMID(4), pixel, width);

		dst = SCDST(4);
		src = SCSRC(1);

		tmp = SCMID(0); /* shift by 2 position */
		SCMID(0) = SCMID(2);
		SCMID(2) = SCMID(4);
		SCMID(4) = tmp;
		tmp = SCMID(1);
		SCMID(1) = SCMID(3);
		SCMID(3) = SCMID(5);
		SCMID(5) = tmp;

		--count;
	}

#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
	scale2x_mmx_emms();
#endif
}
Exemplo n.º 4
0
/**
 * Apply the Scale3x effect on a bitmap.
 * The destination bitmap is filled with the scaled version of the source bitmap.
 * The source bitmap isn't modified.
 * The destination bitmap must be manually allocated before calling the function,
 * note that the resulting size is exactly 3x3 times the size of the source bitmap.
 * \param void_dst Pointer at the first pixel of the destination bitmap.
 * \param dst_slice Size in bytes of a destination bitmap row.
 * \param void_src Pointer at the first pixel of the source bitmap.
 * \param src_slice Size in bytes of a source bitmap row.
 * \param pixel Bytes per pixel of the source and destination bitmap.
 * \param width Horizontal size in pixels of the source bitmap.
 * \param height Vertical size in pixels of the source bitmap.
 */
static void scale3x(void* void_dst, unsigned dst_slice, const void* void_src, unsigned src_slice, unsigned pixel, unsigned width, unsigned height)
{
	unsigned char* dst = (unsigned char*)void_dst;
	const unsigned char* src = (const unsigned char*)void_src;
	unsigned count;

	assert(height >= 2);

	count = height;

	while (count) {
		stage_scale3x(SCDST(0), SCDST(1), SCDST(2), SCSRC(0), SCSRC(1), SCSRC(2), pixel, width);

		dst = SCDST(3);
		src = SCSRC(1);

		--count;
	}
}