Cross Reference: /external/webp/src/dsp/rescaler.c

Lines Matching defs:wrk
28 void WebPRescalerImportRowExpandC(WebPRescaler* const wrk, const uint8_t* src) {
29   const int x_stride = wrk->num_channels;
30   const int x_out_max = wrk->dst_width * wrk->num_channels;
32   assert(!WebPRescalerInputDone(wrk));
33   assert(wrk->x_expand);
38     int accum = wrk->x_add;
40     int right = (wrk->src_width > 1) ? src[x_in + x_stride] : left;
43       wrk->frow[x_out] = right * wrk->x_add + (left - right) * accum;
46       accum -= wrk->x_sub;
50         assert(x_in < wrk->src_width * x_stride);
52         accum += wrk->x_add;
55     assert(wrk->x_sub == 0 /* <- special case for src_width=1 */ || accum == 0);
59 void WebPRescalerImportRowShrinkC(WebPRescaler* const wrk, const uint8_t* src) {
60   const int x_stride = wrk->num_channels;
61   const int x_out_max = wrk->dst_width * wrk->num_channels;
63   assert(!WebPRescalerInputDone(wrk));
64   assert(!wrk->x_expand);
72       accum += wrk->x_add;
74         accum -= wrk->x_sub;
75         assert(x_in < wrk->src_width * x_stride);
82         wrk->frow[x_out] = sum * wrk->x_sub - frac;
84         sum = (int)MULT_FIX(frac, wrk->fx_scale);
95 void WebPRescalerExportRowExpandC(WebPRescaler* const wrk) {
97   uint8_t* const dst = wrk->dst;
98   rescaler_t* const irow = wrk->irow;
99   const int x_out_max = wrk->dst_width * wrk->num_channels;
100   const rescaler_t* const frow = wrk->frow;
101   assert(!WebPRescalerOutputDone(wrk));
102   assert(wrk->y_accum <= 0);
103   assert(wrk->y_expand);
104   assert(wrk->y_sub != 0);
105   if (wrk->y_accum == 0) {
108       const int v = (int)MULT_FIX(J, wrk->fy_scale);
113     const uint32_t B = WEBP_RESCALER_FRAC(-wrk->y_accum, wrk->y_sub);
119       const int v = (int)MULT_FIX(J, wrk->fy_scale);
126 void WebPRescalerExportRowShrinkC(WebPRescaler* const wrk) {
128   uint8_t* const dst = wrk->dst;
129   rescaler_t* const irow = wrk->irow;
130   const int x_out_max = wrk->dst_width * wrk->num_channels;
131   const rescaler_t* const frow = wrk->frow;
132   const uint32_t yscale = wrk->fy_scale * (-wrk->y_accum);
133   assert(!WebPRescalerOutputDone(wrk));
134   assert(wrk->y_accum <= 0);
135   assert(!wrk->y_expand);
139       const int v = (int)MULT_FIX(irow[x_out] - frac, wrk->fxy_scale);
146       const int v = (int)MULT_FIX(irow[x_out], wrk->fxy_scale);
160 void WebPRescalerImportRow(WebPRescaler* const wrk, const uint8_t* src) {
161   assert(!WebPRescalerInputDone(wrk));
162   if (!wrk->x_expand) {
163     WebPRescalerImportRowShrink(wrk, src);
165     WebPRescalerImportRowExpand(wrk, src);
169 void WebPRescalerExportRow(WebPRescaler* const wrk) {
170   if (wrk->y_accum <= 0) {
171     assert(!WebPRescalerOutputDone(wrk));
172     if (wrk->y_expand) {
173       WebPRescalerExportRowExpand(wrk);
174     } else if (wrk->fxy_scale) {
175       WebPRescalerExportRowShrink(wrk);
178       assert(wrk->src_width == 1 && wrk->dst_width <= 2);
179       assert(wrk->src_height == 1 && wrk->dst_height == 1);
180       for (i = 0; i < wrk->num_channels * wrk->dst_width; ++i) {
181         wrk->dst[i] = wrk->irow[i];
182         wrk->irow[i] = 0;
185     wrk->y_accum += wrk->y_add;
186     wrk->dst += wrk->dst_stride;
187     ++wrk->dst_y;