2 // Compression coefficients straight out of jpeglib
7 #define R_TO_U -0.16874
8 #define G_TO_U -0.33126
11 #define R_TO_V 0.50000
12 #define G_TO_V -0.41869
13 #define B_TO_V -0.08131
15 // Decompression coefficients straight out of jpeglib
16 #define V_TO_R 1.40200
17 #define V_TO_G -0.71414
19 #define U_TO_G -0.34414
20 #define U_TO_B 1.77200
22 int BC_Xfer::rtoy_tab[0x100], BC_Xfer::gtoy_tab[0x100], BC_Xfer::btoy_tab[0x100];
23 int BC_Xfer::rtou_tab[0x100], BC_Xfer::gtou_tab[0x100], BC_Xfer::btou_tab[0x100];
24 int BC_Xfer::rtov_tab[0x100], BC_Xfer::gtov_tab[0x100], BC_Xfer::btov_tab[0x100];
25 int BC_Xfer::vtor_tab[0x100], BC_Xfer::vtog_tab[0x100];
26 int BC_Xfer::utog_tab[0x100], BC_Xfer::utob_tab[0x100];
27 float BC_Xfer::vtor_float_tab[0x100], BC_Xfer::vtog_float_tab[0x100];
28 float BC_Xfer::utog_float_tab[0x100], BC_Xfer::utob_float_tab[0x100];
29 int BC_Xfer::rtoy_tab16[0x10000], BC_Xfer::gtoy_tab16[0x10000], BC_Xfer::btoy_tab16[0x10000];
30 int BC_Xfer::rtou_tab16[0x10000], BC_Xfer::gtou_tab16[0x10000], BC_Xfer::btou_tab16[0x10000];
31 int BC_Xfer::rtov_tab16[0x10000], BC_Xfer::gtov_tab16[0x10000], BC_Xfer::btov_tab16[0x10000];
32 int BC_Xfer::vtor_tab16[0x10000], BC_Xfer::vtog_tab16[0x10000];
33 int BC_Xfer::utog_tab16[0x10000], BC_Xfer::utob_tab16[0x10000];
34 float BC_Xfer::v16tor_float_tab[0x10000], BC_Xfer::v16tog_float_tab[0x10000];
35 float BC_Xfer::u16tog_float_tab[0x10000], BC_Xfer::u16tob_float_tab[0x10000];
37 BC_Xfer::Tables BC_Xfer::tables;
41 for( int i=0; i<0x100; ++i ) {
42 rtoy_tab[i] = (int)(R_TO_Y * 0x10000 * i);
43 rtou_tab[i] = (int)(R_TO_U * 0x10000 * i);
44 rtov_tab[i] = (int)(R_TO_V * 0x10000 * i);
46 gtoy_tab[i] = (int)(G_TO_Y * 0x10000 * i);
47 gtou_tab[i] = (int)(G_TO_U * 0x10000 * i);
48 gtov_tab[i] = (int)(G_TO_V * 0x10000 * i);
50 btoy_tab[i] = (int)(B_TO_Y * 0x10000 * i);
51 btou_tab[i] = (int)(B_TO_U * 0x10000 * i) + 0x800000;
52 btov_tab[i] = (int)(B_TO_V * 0x10000 * i) + 0x800000;
55 for( int i=0; i<0x10000; ++i ) {
56 rtoy_tab16[i] = (int)(R_TO_Y * 0x100 * i);
57 rtou_tab16[i] = (int)(R_TO_U * 0x100 * i);
58 rtov_tab16[i] = (int)(R_TO_V * 0x100 * i);
60 gtoy_tab16[i] = (int)(G_TO_Y * 0x100 * i);
61 gtou_tab16[i] = (int)(G_TO_U * 0x100 * i);
62 gtov_tab16[i] = (int)(G_TO_V * 0x100 * i);
64 btoy_tab16[i] = (int)(B_TO_Y * 0x100 * i);
65 btou_tab16[i] = (int)(B_TO_U * 0x100 * i) + 0x800000;
66 btov_tab16[i] = (int)(B_TO_V * 0x100 * i) + 0x800000;
69 for( int i=-0x80; i<0x80; ++i ) {
70 vtor_tab[i+0x80] = (int)(V_TO_R * 0x10000 * i);
71 vtog_tab[i+0x80] = (int)(V_TO_G * 0x10000 * i);
72 utog_tab[i+0x80] = (int)(U_TO_G * 0x10000 * i);
73 utob_tab[i+0x80] = (int)(U_TO_B * 0x10000 * i);
76 for( int i=-0x80; i<0x80; ++i ) {
77 vtor_float_tab[i+0x80] = V_TO_R * i / 0xff;
78 vtog_float_tab[i+0x80] = V_TO_G * i / 0xff;
79 utog_float_tab[i+0x80] = U_TO_G * i / 0xff;
80 utob_float_tab[i+0x80] = U_TO_B * i / 0xff;
83 for( int i=-0x8000; i<0x8000; ++i ) {
84 vtor_tab16[i+0x8000] = (int)(V_TO_R * 0x100 * i);
85 vtog_tab16[i+0x8000] = (int)(V_TO_G * 0x100 * i);
86 utog_tab16[i+0x8000] = (int)(U_TO_G * 0x100 * i);
87 utob_tab16[i+0x8000] = (int)(U_TO_B * 0x100 * i);
90 for( int i=-0x8000; i<0x8000; ++i ) {
91 v16tor_float_tab[i+0x8000] = V_TO_R * i / 0xffff;
92 v16tog_float_tab[i+0x8000] = V_TO_G * i / 0xffff;
93 u16tog_float_tab[i+0x8000] = U_TO_G * i / 0xffff;
94 u16tob_float_tab[i+0x8000] = U_TO_B * i / 0xffff;
99 uint8_t **output_rows, int out_colormodel, int out_x, int out_y, int out_w, int out_h,
100 uint8_t *out_yp, uint8_t *out_up, uint8_t *out_vp, uint8_t *out_ap, int out_rowspan,
101 uint8_t **input_rows, int in_colormodel, int in_x, int in_y, int in_w, int in_h,
102 uint8_t *in_yp, uint8_t *in_up, uint8_t *in_vp, uint8_t *in_ap, int in_rowspan,
105 // prevent bounds errors on poorly dimensioned macro pixel formats
106 switch( in_colormodel ) {
107 case BC_YUV422: in_w &= ~1; break; // 2x1
108 case BC_YUV420P: in_w &= ~1; in_h &= ~1; break; // 2x2
109 case BC_YUV422P: in_w &= ~1; break; // 2x1
110 case BC_YUV410P: in_w &= ~3; in_h &= ~3; break; // 4x4
111 case BC_YUV411P: in_w &= ~3; break; // 4x1
113 switch( out_colormodel ) {
114 case BC_YUV422: out_w &= ~1; break;
115 case BC_YUV420P: out_w &= ~1; out_h &= ~1; break;
116 case BC_YUV422P: out_w &= ~1; break;
117 case BC_YUV410P: out_w &= ~3; out_h &= ~3; break;
118 case BC_YUV411P: out_w &= ~3; break;
120 this->output_rows = output_rows;
121 this->input_rows = input_rows;
122 this->out_yp = out_yp;
123 this->out_up = out_up;
124 this->out_vp = out_vp;
125 this->out_ap = out_ap;
138 this->in_colormodel = in_colormodel;
139 switch( in_colormodel ) {
142 in_rowspan = in_w * sizeof(float);
145 this->total_in_w = in_rowspan;
146 this->out_colormodel = out_colormodel;
147 switch( out_colormodel ) {
150 out_rowspan = out_w * sizeof(float);
153 this->total_out_w = out_rowspan;
154 this->bg_color = bg_color;
155 this->bg_r = (bg_color>>16) & 0xff;
156 this->bg_g = (bg_color>>8) & 0xff;
157 this->bg_b = (bg_color>>0) & 0xff;
159 this->in_pixelsize = BC_CModels::calculate_pixelsize(in_colormodel);
160 this->out_pixelsize = BC_CModels::calculate_pixelsize(out_colormodel);
161 this->scale = (out_w != in_w) || (in_x != 0);
163 /* + 1 so we don't overflow when calculating in advance */
164 column_table = new int[out_w+1];
165 double hscale = (double)in_w/out_w;
166 for( int i=0; i<out_w; ++i ) {
167 column_table[i] = ((int)(hscale * i) + in_x) * in_pixelsize;
168 if( in_colormodel == BC_YUV422 ) column_table[i] &= ~3;
170 double vscale = (double)in_h/out_h;
171 row_table = new int[out_h];
172 for( int i=0; i<out_h; ++i )
173 row_table[i] = (int)(vscale * i) + in_y;
176 BC_Xfer::BC_Xfer(uint8_t **output_rows, uint8_t **input_rows,
177 uint8_t *out_yp, uint8_t *out_up, uint8_t *out_vp,
178 uint8_t *in_yp, uint8_t *in_up, uint8_t *in_vp,
179 int in_x, int in_y, int in_w, int in_h, int out_x, int out_y, int out_w, int out_h,
180 int in_colormodel, int out_colormodel, int bg_color, int in_rowspan, int out_rowspan)
182 init(output_rows, out_colormodel, out_x, out_y, out_w, out_h,
183 out_yp, out_up, out_vp, 0, out_rowspan,
184 input_rows, in_colormodel, in_x, in_y, in_w, in_h,
185 in_yp, in_up, in_vp, 0, in_rowspan, bg_color);
189 uint8_t **output_ptrs, int out_colormodel,
190 int out_x, int out_y, int out_w, int out_h, int out_rowspan,
191 uint8_t **input_ptrs, int in_colormodel,
192 int in_x, int in_y, int in_w, int in_h, int in_rowspan,
195 uint8_t *out_yp = 0, *out_up = 0, *out_vp = 0, *out_ap = 0;
196 uint8_t *in_yp = 0, *in_up = 0, *in_vp = 0, *in_ap = 0;
197 if( BC_CModels::is_planar(in_colormodel) ) {
198 in_yp = input_ptrs[0]; in_up = input_ptrs[1]; in_vp = input_ptrs[2];
199 if( BC_CModels::has_alpha(in_colormodel) ) in_ap = input_ptrs[3];
201 if( BC_CModels::is_planar(out_colormodel) ) {
202 out_yp = output_ptrs[0]; out_up = output_ptrs[1]; out_vp = output_ptrs[2];
203 if( BC_CModels::has_alpha(out_colormodel) ) out_ap = output_ptrs[3];
205 init(output_ptrs, out_colormodel, out_x, out_y, out_w, out_h,
206 out_yp, out_up, out_vp, out_ap, out_rowspan,
207 input_ptrs, in_colormodel, in_x, in_y, in_w, in_h,
208 in_yp, in_up, in_vp, in_ap, in_rowspan, bg_color);
213 delete [] column_table;
217 void BC_CModels::transfer(unsigned char **output_rows, unsigned char **input_rows,
218 unsigned char *out_yp, unsigned char *out_up, unsigned char *out_vp,
219 unsigned char *in_yp, unsigned char *in_up, unsigned char *in_vp,
220 int in_x, int in_y, int in_w, int in_h, int out_x, int out_y, int out_w, int out_h,
221 int in_colormodel, int out_colormodel, int bg_color, int in_rowspan, int out_rowspan)
223 BC_Xfer xfer(output_rows, input_rows,
224 out_yp, out_up, out_vp, in_yp, in_up, in_vp,
225 in_x, in_y, in_w, in_h, out_x, out_y, out_w, out_h,
226 in_colormodel, out_colormodel, bg_color, in_rowspan, out_rowspan);
230 void BC_CModels::transfer(
231 uint8_t **output_ptrs, int out_colormodel,
232 int out_x, int out_y, int out_w, int out_h, int out_rowspan,
233 uint8_t **input_ptrs, int in_colormodel,
234 int in_x, int in_y, int in_w, int in_h, int in_rowspan, int bg_color)
237 output_ptrs, out_colormodel, out_x, out_y, out_w, out_h, out_rowspan,
238 input_ptrs, in_colormodel, in_x, in_y, in_w, in_h, in_rowspan, bg_color);
242 // specialized functions
244 // in bccmdl.py: specialize("bc_rgba8888", "bc_transparency", "XFER_rgba8888_to_transparency")
245 void BC_Xfer::XFER_rgba8888_to_transparency()
247 for( unsigned i=0; i<out_h; ++i ) {
248 uint8_t *outp = output_rows[i + out_y] + out_x * out_pixelsize;
249 uint8_t *inp_row = input_rows[row_table[i]];
250 int bit_no = 0, bit_vec = 0;
251 for( unsigned j=0; j<out_w; ) {
252 uint8_t *inp = inp_row + column_table[j];
253 if( inp[3] < 127 ) bit_vec |= 0x01 << bit_no;
255 if( !bit_no ) { *outp++ = bit_vec; bit_vec = 0; }
257 if( bit_no ) *outp = bit_vec;