mirror of
https://git.ffmpeg.org/ffmpeg.git
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290 lines
9.2 KiB
C
290 lines
9.2 KiB
C
/*
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* Copyright (C) 2015 Pedro Arthur <bygrandao@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "swscale_internal.h"
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/// Scaler instance data
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typedef struct FilterContext
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{
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uint16_t *filter;
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int *filter_pos;
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int filter_size;
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int xInc;
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} FilterContext;
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/// Color conversion instance data
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typedef struct ColorContext
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{
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uint32_t *pal;
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} ColorContext;
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static int lum_h_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
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{
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FilterContext *instance = desc->instance;
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int srcW = desc->src->width;
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int dstW = desc->dst->width;
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int xInc = instance->xInc;
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int i;
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for (i = 0; i < sliceH; ++i) {
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uint8_t ** src = desc->src->plane[0].line;
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uint8_t ** dst = desc->dst->plane[0].line;
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int src_pos = sliceY+i - desc->src->plane[0].sliceY;
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int dst_pos = sliceY+i - desc->dst->plane[0].sliceY;
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if (c->hyscale_fast) {
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c->hyscale_fast(c, (int16_t*)dst[dst_pos], dstW, src[src_pos], srcW, xInc);
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} else {
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c->hyScale(c, (int16_t*)dst[dst_pos], dstW, (const uint8_t *)src[src_pos], instance->filter,
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instance->filter_pos, instance->filter_size);
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}
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if (c->lumConvertRange)
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c->lumConvertRange((int16_t*)dst[dst_pos], dstW);
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desc->dst->plane[0].sliceH += 1;
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if (desc->alpha) {
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src = desc->src->plane[3].line;
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dst = desc->dst->plane[3].line;
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src_pos = sliceY+i - desc->src->plane[3].sliceY;
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dst_pos = sliceY+i - desc->dst->plane[3].sliceY;
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desc->dst->plane[3].sliceH += 1;
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if (c->hyscale_fast) {
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c->hyscale_fast(c, (int16_t*)dst[dst_pos], dstW, src[src_pos], srcW, xInc);
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} else {
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c->hyScale(c, (int16_t*)dst[dst_pos], dstW, (const uint8_t *)src[src_pos], instance->filter,
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instance->filter_pos, instance->filter_size);
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}
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}
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}
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return sliceH;
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}
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static int lum_convert(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
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{
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int srcW = desc->src->width;
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ColorContext * instance = desc->instance;
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uint32_t * pal = instance->pal;
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int i;
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desc->dst->plane[0].sliceY = sliceY;
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desc->dst->plane[0].sliceH = sliceH;
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desc->dst->plane[3].sliceY = sliceY;
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desc->dst->plane[3].sliceH = sliceH;
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for (i = 0; i < sliceH; ++i) {
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int sp0 = sliceY+i - desc->src->plane[0].sliceY;
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int sp1 = ((sliceY+i) >> desc->src->v_chr_sub_sample) - desc->src->plane[1].sliceY;
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const uint8_t * src[4] = { desc->src->plane[0].line[sp0],
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desc->src->plane[1].line[sp1],
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desc->src->plane[2].line[sp1],
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desc->src->plane[3].line[sp0]};
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uint8_t * dst = desc->dst->plane[0].line[i];
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if (c->lumToYV12) {
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c->lumToYV12(dst, src[0], src[1], src[2], srcW, pal);
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} else if (c->readLumPlanar) {
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c->readLumPlanar(dst, src, srcW, c->input_rgb2yuv_table);
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}
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if (desc->alpha) {
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dst = desc->dst->plane[3].line[i];
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if (c->alpToYV12) {
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c->alpToYV12(dst, src[3], src[1], src[2], srcW, pal);
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} else if (c->readAlpPlanar) {
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c->readAlpPlanar(dst, src, srcW, NULL);
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}
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}
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}
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return sliceH;
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}
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int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal)
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{
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ColorContext * li = av_malloc(sizeof(ColorContext));
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if (!li)
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return AVERROR(ENOMEM);
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li->pal = pal;
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desc->instance = li;
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desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt);
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desc->src =src;
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desc->dst = dst;
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desc->process = &lum_convert;
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return 0;
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}
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int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc)
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{
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FilterContext *li = av_malloc(sizeof(FilterContext));
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if (!li)
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return AVERROR(ENOMEM);
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li->filter = filter;
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li->filter_pos = filter_pos;
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li->filter_size = filter_size;
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li->xInc = xInc;
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desc->instance = li;
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desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt);
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desc->src = src;
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desc->dst = dst;
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desc->process = &lum_h_scale;
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return 0;
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}
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static int chr_h_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
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{
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FilterContext *instance = desc->instance;
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int srcW = FF_CEIL_RSHIFT(desc->src->width, desc->src->h_chr_sub_sample);
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int dstW = FF_CEIL_RSHIFT(desc->dst->width, desc->dst->h_chr_sub_sample);
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int xInc = instance->xInc;
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uint8_t ** src1 = desc->src->plane[1].line;
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uint8_t ** dst1 = desc->dst->plane[1].line;
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uint8_t ** src2 = desc->src->plane[2].line;
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uint8_t ** dst2 = desc->dst->plane[2].line;
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int src_pos1 = sliceY - desc->src->plane[1].sliceY;
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int dst_pos1 = sliceY - desc->dst->plane[1].sliceY;
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int src_pos2 = sliceY - desc->src->plane[2].sliceY;
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int dst_pos2 = sliceY - desc->dst->plane[2].sliceY;
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int i;
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for (i = 0; i < sliceH; ++i) {
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if (c->hcscale_fast) {
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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);
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} else {
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c->hcScale(c, (uint16_t*)dst1[dst_pos1+i], dstW, src1[src_pos1+i], instance->filter, instance->filter_pos, instance->filter_size);
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c->hcScale(c, (uint16_t*)dst2[dst_pos2+i], dstW, src2[src_pos2+i], instance->filter, instance->filter_pos, instance->filter_size);
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}
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if (c->chrConvertRange)
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c->chrConvertRange((uint16_t*)dst1[dst_pos1+i], (uint16_t*)dst2[dst_pos2+i], dstW);
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desc->dst->plane[1].sliceH += 1;
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desc->dst->plane[2].sliceH += 1;
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}
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return sliceH;
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}
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static int chr_convert(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
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{
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int srcW = FF_CEIL_RSHIFT(desc->src->width, desc->src->h_chr_sub_sample);
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ColorContext * instance = desc->instance;
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uint32_t * pal = instance->pal;
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int sp0 = (sliceY - (desc->src->plane[0].sliceY >> desc->src->v_chr_sub_sample)) << desc->src->v_chr_sub_sample;
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int sp1 = sliceY - desc->src->plane[1].sliceY;
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int i;
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desc->dst->plane[1].sliceY = sliceY;
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desc->dst->plane[1].sliceH = sliceH;
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desc->dst->plane[2].sliceY = sliceY;
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desc->dst->plane[2].sliceH = sliceH;
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for (i = 0; i < sliceH; ++i) {
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const uint8_t * src[4] = { desc->src->plane[0].line[sp0+i],
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desc->src->plane[1].line[sp1+i],
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desc->src->plane[2].line[sp1+i],
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desc->src->plane[3].line[sp0+i]};
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uint8_t * dst1 = desc->dst->plane[1].line[i];
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uint8_t * dst2 = desc->dst->plane[2].line[i];
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if (c->chrToYV12) {
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c->chrToYV12(dst1, dst2, src[0], src[1], src[2], srcW, pal);
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} else if (c->readChrPlanar) {
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c->readChrPlanar(dst1, dst2, src, srcW, c->input_rgb2yuv_table);
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}
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}
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return sliceH;
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}
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int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal)
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{
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ColorContext * li = av_malloc(sizeof(ColorContext));
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if (!li)
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return AVERROR(ENOMEM);
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li->pal = pal;
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desc->instance = li;
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desc->src =src;
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desc->dst = dst;
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desc->process = &chr_convert;
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return 0;
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}
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int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc)
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{
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FilterContext *li = av_malloc(sizeof(FilterContext));
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if (!li)
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return AVERROR(ENOMEM);
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li->filter = filter;
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li->filter_pos = filter_pos;
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li->filter_size = filter_size;
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li->xInc = xInc;
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desc->instance = li;
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desc->alpha = isALPHA(src->fmt) && isALPHA(dst->fmt);
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desc->src = src;
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desc->dst = dst;
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desc->process = &chr_h_scale;
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return 0;
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}
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static int no_chr_scale(SwsContext *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
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{
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desc->dst->plane[1].sliceY = sliceY + sliceH - desc->dst->plane[1].available_lines;
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desc->dst->plane[1].sliceH = desc->dst->plane[1].available_lines;
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desc->dst->plane[2].sliceY = sliceY + sliceH - desc->dst->plane[2].available_lines;
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desc->dst->plane[2].sliceH = desc->dst->plane[2].available_lines;
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return 0;
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}
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int ff_init_desc_no_chr(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst)
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{
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desc->src = src;
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desc->dst = dst;
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desc->alpha = 0;
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desc->instance = NULL;
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desc->process = &no_chr_scale;
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return 0;
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}
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