diff options
Diffstat (limited to 'libswscale/hscale.c')
| -rw-r--r-- | libswscale/hscale.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/libswscale/hscale.c b/libswscale/hscale.c new file mode 100644 index 0000000000..c8543a2b36 --- /dev/null +++ b/libswscale/hscale.c @@ -0,0 +1,254 @@ +#include "swscale_internal.h" + +static int lum_h_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH) +{ + FilterContext *instance = desc->instance; + int srcW = desc->src->width; + int dstW = desc->dst->width; + int xInc = instance->xInc; + + int i; + for (i = 0; i < sliceH; ++i) { + uint8_t ** src = desc->src->plane[0].line; + uint8_t ** dst = desc->dst->plane[0].line; + int src_pos = sliceY+i - desc->src->plane[0].sliceY; + int dst_pos = sliceY+i - desc->dst->plane[0].sliceY; + + + if (c->hyscale_fast) { + c->hyscale_fast(c, (int16_t*)dst[dst_pos], dstW, src[src_pos], srcW, xInc); + } else { + c->hyScale(c, (int16_t*)dst[dst_pos], dstW, (const uint8_t *)src[src_pos], instance->filter, + instance->filter_pos, instance->filter_size); + } + + if (c->lumConvertRange) + c->lumConvertRange((int16_t*)dst[dst_pos], dstW); + + desc->dst->plane[0].sliceH += 1; + + if (desc->alpha) { + src = desc->src->plane[3].line; + dst = desc->dst->plane[3].line; + + src_pos = sliceY+i - desc->src->plane[3].sliceY; + dst_pos = sliceY+i - desc->dst->plane[3].sliceY; + + desc->dst->plane[3].sliceH += 1; + + if (c->hyscale_fast) { + c->hyscale_fast(c, (int16_t*)dst[dst_pos], dstW, src[src_pos], srcW, xInc); + } else { + c->hyScale(c, (int16_t*)dst[dst_pos], dstW, (const uint8_t *)src[src_pos], instance->filter, + instance->filter_pos, instance->filter_size); + } + } + } + + return sliceH; +} + +static int lum_convert(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH) +{ + int srcW = desc->src->width; + ColorContext * instance = desc->instance; + uint32_t * pal = instance->pal; + int i; + + desc->dst->plane[0].sliceY = sliceY; + desc->dst->plane[0].sliceH = sliceH; + desc->dst->plane[3].sliceY = sliceY; + desc->dst->plane[3].sliceH = sliceH; + + for (i = 0; i < sliceH; ++i) { + int sp0 = sliceY+i - desc->src->plane[0].sliceY; + int sp1 = ((sliceY+i) >> desc->src->v_chr_sub_sample) - desc->src->plane[1].sliceY; + const uint8_t * src[4] = { desc->src->plane[0].line[sp0], + desc->src->plane[1].line[sp1], + desc->src->plane[2].line[sp1], + desc->src->plane[3].line[sp0]}; + uint8_t * dst = desc->dst->plane[0].line[i]; + + if (c->lumToYV12) { + c->lumToYV12(dst, src[0], src[1], src[2], srcW, pal); + } else if (c->readLumPlanar) { + c->readLumPlanar(dst, src, srcW, c->input_rgb2yuv_table); + } + + + if (desc->alpha) { + dst = desc->dst->plane[3].line[i]; + if (c->alpToYV12) { + c->alpToYV12(dst, src[3], src[1], src[2], srcW, pal); + } else if (c->readAlpPlanar) { + c->readAlpPlanar(dst, src, srcW, NULL); + } + } + } + + return sliceH; +} + +int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal) +{ + ColorContext * li = av_malloc(sizeof(ColorContext)); + if (!li) + return AVERROR(ENOMEM); + li->pal = pal; + desc->instance = li; + + desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt); + desc->src =src; + desc->dst = dst; + desc->process = &lum_convert; + + return 0; +} + + +int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc) +{ + FilterContext *li = av_malloc(sizeof(FilterContext)); + if (!li) + return AVERROR(ENOMEM); + + li->filter = filter; + li->filter_pos = filter_pos; + li->filter_size = filter_size; + li->xInc = xInc; + + desc->instance = li; + + desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt); + desc->src = src; + desc->dst = dst; + + desc->process = &lum_h_scale; + + return 0; +} + +static int chr_h_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH) +{ + FilterContext *instance = desc->instance; + int srcW = FF_CEIL_RSHIFT(desc->src->width, desc->src->h_chr_sub_sample); + int dstW = FF_CEIL_RSHIFT(desc->dst->width, desc->dst->h_chr_sub_sample); + int xInc = instance->xInc; + + uint8_t ** src1 = desc->src->plane[1].line; + uint8_t ** dst1 = desc->dst->plane[1].line; + uint8_t ** src2 = desc->src->plane[2].line; + uint8_t ** dst2 = desc->dst->plane[2].line; + + int src_pos1 = sliceY - desc->src->plane[1].sliceY; + int dst_pos1 = sliceY - desc->dst->plane[1].sliceY; + + int src_pos2 = sliceY - desc->src->plane[2].sliceY; + int dst_pos2 = sliceY - desc->dst->plane[2].sliceY; + + int i; + for (i = 0; i < sliceH; ++i) { + if (c->hcscale_fast) { + 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); + } else { + c->hcScale(c, (uint16_t*)dst1[dst_pos1+i], dstW, src1[src_pos1+i], instance->filter, instance->filter_pos, instance->filter_size); + c->hcScale(c, (uint16_t*)dst2[dst_pos2+i], dstW, src2[src_pos2+i], instance->filter, instance->filter_pos, instance->filter_size); + } + + if (c->chrConvertRange) + c->chrConvertRange((uint16_t*)dst1[dst_pos1+i], (uint16_t*)dst2[dst_pos2+i], dstW); + + desc->dst->plane[1].sliceH += 1; + desc->dst->plane[2].sliceH += 1; + } + return sliceH; +} + +static int chr_convert(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH) +{ + int srcW = FF_CEIL_RSHIFT(desc->src->width, desc->src->h_chr_sub_sample); + ColorContext * instance = desc->instance; + uint32_t * pal = instance->pal; + + int sp0 = (sliceY - (desc->src->plane[0].sliceY >> desc->src->v_chr_sub_sample)) << desc->src->v_chr_sub_sample; + int sp1 = sliceY - desc->src->plane[1].sliceY; + + int i; + + desc->dst->plane[1].sliceY = sliceY; + desc->dst->plane[1].sliceH = sliceH; + desc->dst->plane[2].sliceY = sliceY; + desc->dst->plane[2].sliceH = sliceH; + + for (i = 0; i < sliceH; ++i) { + const uint8_t * src[4] = { desc->src->plane[0].line[sp0+i], + desc->src->plane[1].line[sp1+i], + desc->src->plane[2].line[sp1+i], + desc->src->plane[3].line[sp0+i]}; + + uint8_t * dst1 = desc->dst->plane[1].line[i]; + uint8_t * dst2 = desc->dst->plane[2].line[i]; + if (c->chrToYV12) { + c->chrToYV12(dst1, dst2, src[0], src[1], src[2], srcW, pal); + } else if (c->readChrPlanar) { + c->readChrPlanar(dst1, dst2, src, srcW, c->input_rgb2yuv_table); + } + } + return sliceH; +} + +int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal) +{ + ColorContext * li = av_malloc(sizeof(ColorContext)); + if (!li) + return AVERROR(ENOMEM); + li->pal = pal; + desc->instance = li; + + desc->src =src; + desc->dst = dst; + desc->process = &chr_convert; + + return 0; +} + +int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc) +{ + FilterContext *li = av_malloc(sizeof(FilterContext)); + if (!li) + return AVERROR(ENOMEM); + + li->filter = filter; + li->filter_pos = filter_pos; + li->filter_size = filter_size; + li->xInc = xInc; + + desc->instance = li; + + desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt); + desc->src = src; + desc->dst = dst; + + desc->process = &chr_h_scale; + + return 0; +} + +static int no_chr_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH) +{ + desc->dst->plane[1].sliceY = sliceY + sliceH - desc->dst->plane[1].available_lines; + desc->dst->plane[1].sliceH = desc->dst->plane[1].available_lines; + desc->dst->plane[2].sliceY = sliceY + sliceH - desc->dst->plane[2].available_lines; + desc->dst->plane[2].sliceH = desc->dst->plane[2].available_lines; + return 0; +} + +int ff_init_desc_no_chr(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst) +{ + desc->src = src; + desc->dst = dst; + desc->alpha = 0; + desc->instance = NULL; + desc->process = &no_chr_scale; + return 0; +} |