void atari_ntsc_blit_double( atari_ntsc_t const* ntsc,
atari_ntsc_in_t const* atari_in1, atari_ntsc_in_t const* atari_in2,
long in_row_width, int in_width, int in_height,
void* rgb_out, long out_pitch )
{
#define TO_DOUBLE(pixel1, pixel2) (((pixel1>>1)<<7)+(pixel2>>1))
int const chunk_count = (in_width - 1) / atari_ntsc_in_chunk;
while ( in_height-- )
{
atari_ntsc_in_t const* line_in1 = atari_in1;
atari_ntsc_in_t const* line_in2 = atari_in2;
ATARI_NTSC_BEGIN_ROW( ntsc,
TO_DOUBLE(atari_ntsc_black, atari_ntsc_black),
TO_DOUBLE(line_in1[0], line_in2[0]) );
atari_ntsc_out_t* restrict line_out = (atari_ntsc_out_t*) rgb_out;
int n;
++line_in1;
++line_in2;
for ( n = chunk_count; n; --n )
{
/* order of input and output pixels must not be altered */
ATARI_NTSC_COLOR_IN( 0, ntsc,
TO_DOUBLE(line_in1[0], line_in2[0]) );
ATARI_NTSC_RGB_OUT_8888( 0, line_out[0] );
ATARI_NTSC_RGB_OUT_8888( 1, line_out[1] );
ATARI_NTSC_RGB_OUT_8888( 2, line_out[2] );
ATARI_NTSC_RGB_OUT_8888( 3, line_out[3] );
ATARI_NTSC_COLOR_IN( 1, ntsc,
TO_DOUBLE(line_in1[1], line_in2[1]) );
ATARI_NTSC_RGB_OUT_8888( 4, line_out[4] );
ATARI_NTSC_RGB_OUT_8888( 5, line_out[5] );
ATARI_NTSC_RGB_OUT_8888( 6, line_out[6] );
line_in1 += 2;
line_in2 += 2;
line_out += 7;
}
/* finish final pixels */
ATARI_NTSC_COLOR_IN( 0, ntsc,
TO_DOUBLE(atari_ntsc_black, atari_ntsc_black) );
ATARI_NTSC_RGB_OUT_8888( 0, line_out[0] );
ATARI_NTSC_RGB_OUT_8888( 1, line_out[1] );
ATARI_NTSC_RGB_OUT_8888( 2, line_out[2] );
ATARI_NTSC_RGB_OUT_8888( 3, line_out[3] );
ATARI_NTSC_COLOR_IN( 1, ntsc,
TO_DOUBLE(atari_ntsc_black, atari_ntsc_black) );
ATARI_NTSC_RGB_OUT_8888( 4, line_out[4] );
ATARI_NTSC_RGB_OUT_8888( 5, line_out[5] );
ATARI_NTSC_RGB_OUT_8888( 6, line_out[6] );
atari_in1 += in_row_width;
atari_in2 += in_row_width;
rgb_out = (char*) rgb_out + out_pitch;
}
}
/* Atari change: no alternating burst phases - remove burst_phase parameter. */
void atari_ntsc_blit( atari_ntsc_t const* ntsc, ATARI_NTSC_IN_T const* input, long in_row_width,
int in_width, int in_height, void* rgb_out, long out_pitch )
{
int chunk_count = (in_width - 1) / atari_ntsc_in_chunk;
for ( ; in_height; --in_height )
{
ATARI_NTSC_IN_T const* line_in = input;
/* Atari change: no alternating burst phases - remove burst_phase parameter; adjust to 4/7 pixel ratio. */
ATARI_NTSC_BEGIN_ROW( ntsc,
atari_ntsc_black, atari_ntsc_black, atari_ntsc_black, ATARI_NTSC_ADJ_IN( *line_in ) );
atari_ntsc_out_t* restrict line_out = (atari_ntsc_out_t*) rgb_out;
int n;
++line_in;
for ( n = chunk_count; n; --n )
{
/* order of input and output pixels must not be altered */
ATARI_NTSC_COLOR_IN( 0, ATARI_NTSC_ADJ_IN( line_in [0] ) );
ATARI_NTSC_RGB_OUT( 0, line_out [0], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_RGB_OUT( 1, line_out [1], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_COLOR_IN( 1, ATARI_NTSC_ADJ_IN( line_in [1] ) );
ATARI_NTSC_RGB_OUT( 2, line_out [2], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_RGB_OUT( 3, line_out [3], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_COLOR_IN( 2, ATARI_NTSC_ADJ_IN( line_in [2] ) );
ATARI_NTSC_RGB_OUT( 4, line_out [4], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_RGB_OUT( 5, line_out [5], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_COLOR_IN( 3, ATARI_NTSC_ADJ_IN( line_in [3] ) );
ATARI_NTSC_RGB_OUT( 6, line_out [6], ATARI_NTSC_OUT_DEPTH );
line_in += 4;
line_out += 7;
}
/* finish final pixels */
ATARI_NTSC_COLOR_IN( 0, atari_ntsc_black );
ATARI_NTSC_RGB_OUT( 0, line_out [0], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_RGB_OUT( 1, line_out [1], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_COLOR_IN( 1, atari_ntsc_black );
ATARI_NTSC_RGB_OUT( 2, line_out [2], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_RGB_OUT( 3, line_out [3], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_COLOR_IN( 2, atari_ntsc_black );
ATARI_NTSC_RGB_OUT( 4, line_out [4], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_RGB_OUT( 5, line_out [5], ATARI_NTSC_OUT_DEPTH );
ATARI_NTSC_COLOR_IN( 3, atari_ntsc_black );
ATARI_NTSC_RGB_OUT( 6, line_out [6], ATARI_NTSC_OUT_DEPTH );
input += in_row_width;
rgb_out = (char*) rgb_out + out_pitch;
}
}
