1 #include "swscale_internal.h"
3 static int lum_h_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
5 FilterContext *instance = desc->instance;
6 int srcW = desc->src->width;
7 int dstW = desc->dst->width;
8 int xInc = instance->xInc;
11 for (i = 0; i < sliceH; ++i) {
12 uint8_t ** src = desc->src->plane[0].line;
13 uint8_t ** dst = desc->dst->plane[0].line;
14 int src_pos = sliceY+i - desc->src->plane[0].sliceY;
15 int dst_pos = sliceY+i - desc->dst->plane[0].sliceY;
18 if (c->hyscale_fast) {
19 c->hyscale_fast(c, (int16_t*)dst[dst_pos], dstW, src[src_pos], srcW, xInc);
21 c->hyScale(c, (int16_t*)dst[dst_pos], dstW, (const uint8_t *)src[src_pos], instance->filter,
22 instance->filter_pos, instance->filter_size);
25 if (c->lumConvertRange)
26 c->lumConvertRange((int16_t*)dst[dst_pos], dstW);
28 desc->dst->plane[0].sliceH += 1;
31 src = desc->src->plane[3].line;
32 dst = desc->dst->plane[3].line;
34 src_pos = sliceY+i - desc->src->plane[3].sliceY;
35 dst_pos = sliceY+i - desc->dst->plane[3].sliceY;
37 desc->dst->plane[3].sliceH += 1;
39 if (c->hyscale_fast) {
40 c->hyscale_fast(c, (int16_t*)dst[dst_pos], dstW, src[src_pos], srcW, xInc);
42 c->hyScale(c, (int16_t*)dst[dst_pos], dstW, (const uint8_t *)src[src_pos], instance->filter,
43 instance->filter_pos, instance->filter_size);
51 static int lum_convert(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
53 int srcW = desc->src->width;
54 ColorContext * instance = desc->instance;
55 uint32_t * pal = instance->pal;
58 desc->dst->plane[0].sliceY = sliceY;
59 desc->dst->plane[0].sliceH = sliceH;
60 desc->dst->plane[3].sliceY = sliceY;
61 desc->dst->plane[3].sliceH = sliceH;
63 for (i = 0; i < sliceH; ++i) {
64 int sp0 = sliceY+i - desc->src->plane[0].sliceY;
65 int sp1 = ((sliceY+i) >> desc->src->v_chr_sub_sample) - desc->src->plane[1].sliceY;
66 const uint8_t * src[4] = { desc->src->plane[0].line[sp0],
67 desc->src->plane[1].line[sp1],
68 desc->src->plane[2].line[sp1],
69 desc->src->plane[3].line[sp0]};
70 uint8_t * dst = desc->dst->plane[0].line[i];
73 c->lumToYV12(dst, src[0], src[1], src[2], srcW, pal);
74 } else if (c->readLumPlanar) {
75 c->readLumPlanar(dst, src, srcW, c->input_rgb2yuv_table);
80 dst = desc->dst->plane[3].line[i];
82 c->alpToYV12(dst, src[3], src[1], src[2], srcW, pal);
83 } else if (c->readAlpPlanar) {
84 c->readAlpPlanar(dst, src, srcW, NULL);
92 int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal)
94 ColorContext * li = av_malloc(sizeof(ColorContext));
96 return AVERROR(ENOMEM);
100 desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt);
103 desc->process = &lum_convert;
109 int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc)
111 FilterContext *li = av_malloc(sizeof(FilterContext));
113 return AVERROR(ENOMEM);
116 li->filter_pos = filter_pos;
117 li->filter_size = filter_size;
122 desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt);
126 desc->process = &lum_h_scale;
131 static int chr_h_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
133 FilterContext *instance = desc->instance;
134 int srcW = FF_CEIL_RSHIFT(desc->src->width, desc->src->h_chr_sub_sample);
135 int dstW = FF_CEIL_RSHIFT(desc->dst->width, desc->dst->h_chr_sub_sample);
136 int xInc = instance->xInc;
138 uint8_t ** src1 = desc->src->plane[1].line;
139 uint8_t ** dst1 = desc->dst->plane[1].line;
140 uint8_t ** src2 = desc->src->plane[2].line;
141 uint8_t ** dst2 = desc->dst->plane[2].line;
143 int src_pos1 = sliceY - desc->src->plane[1].sliceY;
144 int dst_pos1 = sliceY - desc->dst->plane[1].sliceY;
146 int src_pos2 = sliceY - desc->src->plane[2].sliceY;
147 int dst_pos2 = sliceY - desc->dst->plane[2].sliceY;
150 for (i = 0; i < sliceH; ++i) {
151 if (c->hcscale_fast) {
152 c->hcscale_fast(c, (uint16_t*)dst1[dst_pos1+i], (uint16_t*)dst2[dst_pos2+i], dstW, src1[src_pos1+i], src2[src_pos2+i], srcW, xInc);
154 c->hcScale(c, (uint16_t*)dst1[dst_pos1+i], dstW, src1[src_pos1+i], instance->filter, instance->filter_pos, instance->filter_size);
155 c->hcScale(c, (uint16_t*)dst2[dst_pos2+i], dstW, src2[src_pos2+i], instance->filter, instance->filter_pos, instance->filter_size);
158 if (c->chrConvertRange)
159 c->chrConvertRange((uint16_t*)dst1[dst_pos1+i], (uint16_t*)dst2[dst_pos2+i], dstW);
161 desc->dst->plane[1].sliceH += 1;
162 desc->dst->plane[2].sliceH += 1;
167 static int chr_convert(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
169 int srcW = FF_CEIL_RSHIFT(desc->src->width, desc->src->h_chr_sub_sample);
170 ColorContext * instance = desc->instance;
171 uint32_t * pal = instance->pal;
173 int sp0 = (sliceY - (desc->src->plane[0].sliceY >> desc->src->v_chr_sub_sample)) << desc->src->v_chr_sub_sample;
174 int sp1 = sliceY - desc->src->plane[1].sliceY;
178 desc->dst->plane[1].sliceY = sliceY;
179 desc->dst->plane[1].sliceH = sliceH;
180 desc->dst->plane[2].sliceY = sliceY;
181 desc->dst->plane[2].sliceH = sliceH;
183 for (i = 0; i < sliceH; ++i) {
184 const uint8_t * src[4] = { desc->src->plane[0].line[sp0+i],
185 desc->src->plane[1].line[sp1+i],
186 desc->src->plane[2].line[sp1+i],
187 desc->src->plane[3].line[sp0+i]};
189 uint8_t * dst1 = desc->dst->plane[1].line[i];
190 uint8_t * dst2 = desc->dst->plane[2].line[i];
192 c->chrToYV12(dst1, dst2, src[0], src[1], src[2], srcW, pal);
193 } else if (c->readChrPlanar) {
194 c->readChrPlanar(dst1, dst2, src, srcW, c->input_rgb2yuv_table);
200 int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal)
202 ColorContext * li = av_malloc(sizeof(ColorContext));
204 return AVERROR(ENOMEM);
210 desc->process = &chr_convert;
215 int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc)
217 FilterContext *li = av_malloc(sizeof(FilterContext));
219 return AVERROR(ENOMEM);
222 li->filter_pos = filter_pos;
223 li->filter_size = filter_size;
228 desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt);
232 desc->process = &chr_h_scale;
237 static int no_chr_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
239 desc->dst->plane[1].sliceY = sliceY + sliceH - desc->dst->plane[1].available_lines;
240 desc->dst->plane[1].sliceH = desc->dst->plane[1].available_lines;
241 desc->dst->plane[2].sliceY = sliceY + sliceH - desc->dst->plane[2].available_lines;
242 desc->dst->plane[2].sliceH = desc->dst->plane[2].available_lines;
246 int ff_init_desc_no_chr(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst)
251 desc->instance = NULL;
252 desc->process = &no_chr_scale;