mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-21 23:10:13 +00:00
316 lines
9.2 KiB
C
316 lines
9.2 KiB
C
/*
|
|
* Copyright (C) 2015 Pedro Arthur <bygrandao@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "swscale_internal.h"
|
|
|
|
static void free_lines(SwsSlice *s)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 2; ++i) {
|
|
int n = s->plane[i].available_lines;
|
|
int j;
|
|
for (j = 0; j < n; ++j) {
|
|
av_freep(&s->plane[i].line[j]);
|
|
if (s->is_ring)
|
|
s->plane[i].line[j+n] = NULL;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < 4; ++i)
|
|
memset(s->plane[i].line, 0, sizeof(uint8_t*) * s->plane[i].available_lines * (s->is_ring ? 3 : 1));
|
|
s->should_free_lines = 0;
|
|
}
|
|
|
|
/*
|
|
slice lines contains extra bytes for vetorial code thus @size
|
|
is the allocated memory size and @width is the number of pixels
|
|
*/
|
|
static int alloc_lines(SwsSlice *s, int size, int width)
|
|
{
|
|
int i;
|
|
int idx[2] = {3, 2};
|
|
|
|
s->should_free_lines = 1;
|
|
s->width = width;
|
|
|
|
for (i = 0; i < 2; ++i) {
|
|
int n = s->plane[i].available_lines;
|
|
int j;
|
|
int ii = idx[i];
|
|
|
|
av_assert0(n == s->plane[ii].available_lines);
|
|
for (j = 0; j < n; ++j) {
|
|
// chroma plane line U and V are expected to be contiguous in memory
|
|
// by mmx vertical scaler code
|
|
s->plane[i].line[j] = av_malloc(size * 2 + 32);
|
|
if (!s->plane[i].line[j]) {
|
|
free_lines(s);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
s->plane[ii].line[j] = s->plane[i].line[j] + size + 16;
|
|
if (s->is_ring) {
|
|
s->plane[i].line[j+n] = s->plane[i].line[j];
|
|
s->plane[ii].line[j+n] = s->plane[ii].line[j];
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int alloc_slice(SwsSlice *s, enum AVPixelFormat fmt, int lumLines, int chrLines, int h_sub_sample, int v_sub_sample, int ring)
|
|
{
|
|
int i;
|
|
int size[4] = { lumLines,
|
|
chrLines,
|
|
chrLines,
|
|
lumLines };
|
|
|
|
s->h_chr_sub_sample = h_sub_sample;
|
|
s->v_chr_sub_sample = v_sub_sample;
|
|
s->fmt = fmt;
|
|
s->is_ring = ring;
|
|
s->should_free_lines = 0;
|
|
|
|
for (i = 0; i < 4; ++i) {
|
|
int n = size[i] * ( ring == 0 ? 1 : 3);
|
|
s->plane[i].line = av_mallocz_array(sizeof(uint8_t*), n);
|
|
if (!s->plane[i].line)
|
|
return AVERROR(ENOMEM);
|
|
|
|
s->plane[i].tmp = ring ? s->plane[i].line + size[i] * 2 : NULL;
|
|
s->plane[i].available_lines = size[i];
|
|
s->plane[i].sliceY = 0;
|
|
s->plane[i].sliceH = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void free_slice(SwsSlice *s)
|
|
{
|
|
int i;
|
|
if (s) {
|
|
if (s->should_free_lines)
|
|
free_lines(s);
|
|
for (i = 0; i < 4; ++i) {
|
|
av_freep(&s->plane[i].line);
|
|
s->plane[i].tmp = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
int ff_rotate_slice(SwsSlice *s, int lum, int chr)
|
|
{
|
|
int i;
|
|
if (lum) {
|
|
for (i = 0; i < 4; i+=3) {
|
|
int n = s->plane[i].available_lines;
|
|
int l = lum - s->plane[i].sliceY;
|
|
|
|
if (l >= n * 2) {
|
|
s->plane[i].sliceY += n;
|
|
s->plane[i].sliceH -= n;
|
|
}
|
|
}
|
|
}
|
|
if (chr) {
|
|
for (i = 1; i < 3; ++i) {
|
|
int n = s->plane[i].available_lines;
|
|
int l = chr - s->plane[i].sliceY;
|
|
|
|
if (l >= n * 2) {
|
|
s->plane[i].sliceY += n;
|
|
s->plane[i].sliceH -= n;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ff_init_slice_from_src(SwsSlice * s, uint8_t *src[4], int stride[4], int srcW, int lumY, int lumH, int chrY, int chrH)
|
|
{
|
|
int i = 0;
|
|
|
|
const int start[4] = {lumY,
|
|
chrY,
|
|
chrY,
|
|
lumY};
|
|
|
|
const int end[4] = {lumY +lumH,
|
|
chrY + chrH,
|
|
chrY + chrH,
|
|
lumY + lumH};
|
|
|
|
s->width = srcW;
|
|
|
|
for (i = 0; i < 4; ++i) {
|
|
int j;
|
|
int lines = end[i];
|
|
lines = s->plane[i].available_lines < lines ? s->plane[i].available_lines : lines;
|
|
|
|
if (end[i] > s->plane[i].sliceY+s->plane[i].sliceH) {
|
|
if (start[i] <= s->plane[i].sliceY+1)
|
|
s->plane[i].sliceY = FFMIN(start[i], s->plane[i].sliceY);
|
|
else
|
|
s->plane[i].sliceY = start[i];
|
|
s->plane[i].sliceH = end[i] - s->plane[i].sliceY;
|
|
} else {
|
|
if (end[i] >= s->plane[i].sliceY)
|
|
s->plane[i].sliceH = s->plane[i].sliceY + s->plane[i].sliceH - start[i];
|
|
else
|
|
s->plane[i].sliceH = end[i] - start[i];
|
|
s->plane[i].sliceY = start[i];
|
|
}
|
|
|
|
for (j = start[i]; j < lines; j+= 1)
|
|
s->plane[i].line[j] = src[i] + (start[i] + j) * stride[i];
|
|
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fill_ones(SwsSlice *s, int n, int is16bit)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 4; ++i) {
|
|
int j;
|
|
int size = s->plane[i].available_lines;
|
|
for (j = 0; j < size; ++j) {
|
|
int k;
|
|
int end = is16bit ? n>>1: n;
|
|
// fill also one extra element
|
|
end += 1;
|
|
if (is16bit)
|
|
for (k = 0; k < end; ++k)
|
|
((int32_t*)(s->plane[i].line[j]))[k] = 1<<18;
|
|
else
|
|
for (k = 0; k < end; ++k)
|
|
((int16_t*)(s->plane[i].line[j]))[k] = 1<<14;
|
|
}
|
|
}
|
|
}
|
|
|
|
int ff_init_filters(SwsContext * c)
|
|
{
|
|
int i;
|
|
int index;
|
|
int num_ydesc;
|
|
int num_cdesc;
|
|
int need_lum_conv = c->lumToYV12 || c->readLumPlanar || c->alpToYV12 || c->readAlpPlanar;
|
|
int need_chr_conv = c->chrToYV12 || c->readChrPlanar;
|
|
int srcIdx, dstIdx;
|
|
int dst_stride = FFALIGN(c->dstW * sizeof(int16_t) + 66, 16);
|
|
|
|
uint32_t * pal = usePal(c->srcFormat) ? c->pal_yuv : (uint32_t*)c->input_rgb2yuv_table;
|
|
int res = 0;
|
|
|
|
if (c->dstBpc == 16)
|
|
dst_stride <<= 1;
|
|
|
|
num_ydesc = need_lum_conv ? 2 : 1;
|
|
num_cdesc = need_chr_conv ? 2 : 1;
|
|
|
|
c->numSlice = FFMAX(num_ydesc, num_cdesc) + 1;
|
|
c->numDesc = num_ydesc + num_cdesc;
|
|
c->descIndex[0] = num_ydesc;
|
|
c->descIndex[1] = num_ydesc + num_cdesc;
|
|
|
|
|
|
|
|
c->desc = av_mallocz_array(sizeof(SwsFilterDescriptor), c->numDesc);
|
|
if (!c->desc)
|
|
return AVERROR(ENOMEM);
|
|
c->slice = av_mallocz_array(sizeof(SwsSlice), c->numSlice);
|
|
|
|
|
|
res = alloc_slice(&c->slice[0], c->srcFormat, c->srcH, c->chrSrcH, c->chrSrcHSubSample, c->chrSrcVSubSample, 0);
|
|
if (res < 0) goto cleanup;
|
|
for (i = 1; i < c->numSlice-1; ++i) {
|
|
res = alloc_slice(&c->slice[i], c->srcFormat, c->vLumFilterSize + MAX_LINES_AHEAD, c->vChrFilterSize + MAX_LINES_AHEAD, c->chrSrcHSubSample, c->chrSrcVSubSample, 0);
|
|
if (res < 0) goto cleanup;
|
|
res = alloc_lines(&c->slice[i], FFALIGN(c->srcW*2+78, 16), c->srcW);
|
|
if (res < 0) goto cleanup;
|
|
}
|
|
res = alloc_slice(&c->slice[i], c->srcFormat, c->vLumFilterSize + MAX_LINES_AHEAD, c->vChrFilterSize + MAX_LINES_AHEAD, c->chrDstHSubSample, c->chrDstVSubSample, 1);
|
|
if (res < 0) goto cleanup;
|
|
res = alloc_lines(&c->slice[i], dst_stride, c->dstW);
|
|
if (res < 0) goto cleanup;
|
|
|
|
fill_ones(&c->slice[i], dst_stride>>1, c->dstBpc == 16);
|
|
|
|
index = 0;
|
|
srcIdx = 0;
|
|
dstIdx = 1;
|
|
|
|
if (need_lum_conv) {
|
|
ff_init_desc_fmt_convert(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], pal);
|
|
c->desc[index].alpha = c->alpPixBuf != 0;
|
|
++index;
|
|
srcIdx = dstIdx;
|
|
}
|
|
|
|
|
|
dstIdx = FFMAX(num_ydesc, num_cdesc);
|
|
ff_init_desc_hscale(&c->desc[index], &c->slice[index], &c->slice[dstIdx], c->hLumFilter, c->hLumFilterPos, c->hLumFilterSize, c->lumXInc);
|
|
c->desc[index].alpha = c->alpPixBuf != 0;
|
|
|
|
|
|
++index;
|
|
{
|
|
srcIdx = 0;
|
|
dstIdx = 1;
|
|
if (need_chr_conv) {
|
|
ff_init_desc_cfmt_convert(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], pal);
|
|
++index;
|
|
srcIdx = dstIdx;
|
|
}
|
|
|
|
dstIdx = FFMAX(num_ydesc, num_cdesc);
|
|
if (c->needs_hcscale)
|
|
ff_init_desc_chscale(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], c->hChrFilter, c->hChrFilterPos, c->hChrFilterSize, c->chrXInc);
|
|
else
|
|
ff_init_desc_no_chr(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx]);
|
|
}
|
|
|
|
return 0;
|
|
|
|
cleanup:
|
|
ff_free_filters(c);
|
|
return res;
|
|
}
|
|
|
|
int ff_free_filters(SwsContext *c)
|
|
{
|
|
int i;
|
|
if (c->desc) {
|
|
for (i = 0; i < c->numDesc; ++i)
|
|
av_freep(&c->desc[i].instance);
|
|
av_freep(&c->desc);
|
|
}
|
|
|
|
if (c->slice) {
|
|
for (i = 0; i < c->numSlice; ++i)
|
|
free_slice(&c->slice[i]);
|
|
av_freep(&c->slice);
|
|
}
|
|
return 0;
|
|
}
|