410 lines
14 KiB
C
410 lines
14 KiB
C
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/*
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* Copyright (c) 2010 Stefano Sabatini
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* Copyright (c) 2008 Vitor Sessak
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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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/**
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* @file
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* transposition filter
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* Based on MPlayer libmpcodecs/vf_rotate.c.
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*/
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#include <stdio.h>
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#include "libavutil/avassert.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/internal.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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#include "transpose.h"
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typedef struct TransContext {
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const AVClass *class;
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int hsub, vsub;
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int planes;
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int pixsteps[4];
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int passthrough; ///< PassthroughType, landscape passthrough mode enabled
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int dir; ///< TransposeDir
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TransVtable vtables[4];
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} TransContext;
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static int query_formats(AVFilterContext *ctx)
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{
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AVFilterFormats *pix_fmts = NULL;
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int fmt, ret;
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for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
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if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
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desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
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desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
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desc->log2_chroma_w != desc->log2_chroma_h) &&
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(ret = ff_add_format(&pix_fmts, fmt)) < 0)
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return ret;
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}
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return ff_set_common_formats(ctx, pix_fmts);
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}
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static inline void transpose_block_8_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize,
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int w, int h)
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{
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int x, y;
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for (y = 0; y < h; y++, dst += dst_linesize, src++)
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for (x = 0; x < w; x++)
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dst[x] = src[x*src_linesize];
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}
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static void transpose_8x8_8_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize)
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{
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transpose_block_8_c(src, src_linesize, dst, dst_linesize, 8, 8);
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}
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static inline void transpose_block_16_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize,
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int w, int h)
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{
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int x, y;
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for (y = 0; y < h; y++, dst += dst_linesize, src += 2)
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for (x = 0; x < w; x++)
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*((uint16_t *)(dst + 2*x)) = *((uint16_t *)(src + x*src_linesize));
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}
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static void transpose_8x8_16_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize)
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{
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transpose_block_16_c(src, src_linesize, dst, dst_linesize, 8, 8);
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}
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static inline void transpose_block_24_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize,
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int w, int h)
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{
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int x, y;
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for (y = 0; y < h; y++, dst += dst_linesize) {
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for (x = 0; x < w; x++) {
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int32_t v = AV_RB24(src + x*src_linesize + y*3);
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AV_WB24(dst + 3*x, v);
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}
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}
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}
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static void transpose_8x8_24_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize)
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{
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transpose_block_24_c(src, src_linesize, dst, dst_linesize, 8, 8);
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}
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static inline void transpose_block_32_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize,
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int w, int h)
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{
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int x, y;
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for (y = 0; y < h; y++, dst += dst_linesize, src += 4) {
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for (x = 0; x < w; x++)
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*((uint32_t *)(dst + 4*x)) = *((uint32_t *)(src + x*src_linesize));
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}
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}
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static void transpose_8x8_32_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize)
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{
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transpose_block_32_c(src, src_linesize, dst, dst_linesize, 8, 8);
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}
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static inline void transpose_block_48_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize,
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int w, int h)
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{
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int x, y;
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for (y = 0; y < h; y++, dst += dst_linesize, src += 6) {
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for (x = 0; x < w; x++) {
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int64_t v = AV_RB48(src + x*src_linesize);
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AV_WB48(dst + 6*x, v);
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}
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}
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}
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static void transpose_8x8_48_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize)
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{
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transpose_block_48_c(src, src_linesize, dst, dst_linesize, 8, 8);
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}
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static inline void transpose_block_64_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize,
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int w, int h)
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{
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int x, y;
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for (y = 0; y < h; y++, dst += dst_linesize, src += 8)
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for (x = 0; x < w; x++)
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*((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x*src_linesize));
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}
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static void transpose_8x8_64_c(uint8_t *src, ptrdiff_t src_linesize,
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uint8_t *dst, ptrdiff_t dst_linesize)
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{
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transpose_block_64_c(src, src_linesize, dst, dst_linesize, 8, 8);
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}
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static int config_props_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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TransContext *s = ctx->priv;
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AVFilterLink *inlink = ctx->inputs[0];
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const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
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const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
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if (s->dir&4) {
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av_log(ctx, AV_LOG_WARNING,
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"dir values greater than 3 are deprecated, use the passthrough option instead\n");
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s->dir &= 3;
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s->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE;
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}
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if ((inlink->w >= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
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(inlink->w <= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
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av_log(ctx, AV_LOG_VERBOSE,
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"w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
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inlink->w, inlink->h, inlink->w, inlink->h);
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return 0;
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} else {
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s->passthrough = TRANSPOSE_PT_TYPE_NONE;
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}
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s->hsub = desc_in->log2_chroma_w;
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s->vsub = desc_in->log2_chroma_h;
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s->planes = av_pix_fmt_count_planes(outlink->format);
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av_assert0(desc_in->nb_components == desc_out->nb_components);
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av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
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outlink->w = inlink->h;
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outlink->h = inlink->w;
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if (inlink->sample_aspect_ratio.num)
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outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 },
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inlink->sample_aspect_ratio);
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else
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outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
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for (int i = 0; i < 4; i++) {
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TransVtable *v = &s->vtables[i];
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switch (s->pixsteps[i]) {
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case 1: v->transpose_block = transpose_block_8_c;
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v->transpose_8x8 = transpose_8x8_8_c; break;
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case 2: v->transpose_block = transpose_block_16_c;
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v->transpose_8x8 = transpose_8x8_16_c; break;
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case 3: v->transpose_block = transpose_block_24_c;
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v->transpose_8x8 = transpose_8x8_24_c; break;
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case 4: v->transpose_block = transpose_block_32_c;
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v->transpose_8x8 = transpose_8x8_32_c; break;
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case 6: v->transpose_block = transpose_block_48_c;
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v->transpose_8x8 = transpose_8x8_48_c; break;
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case 8: v->transpose_block = transpose_block_64_c;
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v->transpose_8x8 = transpose_8x8_64_c; break;
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}
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}
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if (ARCH_X86) {
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for (int i = 0; i < 4; i++) {
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TransVtable *v = &s->vtables[i];
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ff_transpose_init_x86(v, s->pixsteps[i]);
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}
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}
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av_log(ctx, AV_LOG_VERBOSE,
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"w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
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inlink->w, inlink->h, s->dir, outlink->w, outlink->h,
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s->dir == 1 || s->dir == 3 ? "clockwise" : "counterclockwise",
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s->dir == 0 || s->dir == 3);
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return 0;
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}
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static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
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{
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TransContext *s = inlink->dst->priv;
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return s->passthrough ?
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ff_null_get_video_buffer (inlink, w, h) :
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ff_default_get_video_buffer(inlink, w, h);
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}
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typedef struct ThreadData {
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AVFrame *in, *out;
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} ThreadData;
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static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
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int nb_jobs)
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{
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TransContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *out = td->out;
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AVFrame *in = td->in;
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int plane;
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for (plane = 0; plane < s->planes; plane++) {
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int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
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int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
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int pixstep = s->pixsteps[plane];
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int inh = AV_CEIL_RSHIFT(in->height, vsub);
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int outw = AV_CEIL_RSHIFT(out->width, hsub);
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int outh = AV_CEIL_RSHIFT(out->height, vsub);
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int start = (outh * jobnr ) / nb_jobs;
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int end = (outh * (jobnr+1)) / nb_jobs;
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uint8_t *dst, *src;
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int dstlinesize, srclinesize;
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int x, y;
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TransVtable *v = &s->vtables[plane];
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dstlinesize = out->linesize[plane];
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dst = out->data[plane] + start * dstlinesize;
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src = in->data[plane];
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srclinesize = in->linesize[plane];
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if (s->dir & 1) {
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src += in->linesize[plane] * (inh - 1);
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srclinesize *= -1;
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}
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if (s->dir & 2) {
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dst = out->data[plane] + dstlinesize * (outh - start - 1);
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dstlinesize *= -1;
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}
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for (y = start; y < end - 7; y += 8) {
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for (x = 0; x < outw - 7; x += 8) {
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v->transpose_8x8(src + x * srclinesize + y * pixstep,
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srclinesize,
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dst + (y - start) * dstlinesize + x * pixstep,
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dstlinesize);
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}
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if (outw - x > 0 && end - y > 0)
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v->transpose_block(src + x * srclinesize + y * pixstep,
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srclinesize,
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dst + (y - start) * dstlinesize + x * pixstep,
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dstlinesize, outw - x, end - y);
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}
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if (end - y > 0)
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v->transpose_block(src + 0 * srclinesize + y * pixstep,
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srclinesize,
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dst + (y - start) * dstlinesize + 0 * pixstep,
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dstlinesize, outw, end - y);
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}
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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TransContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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ThreadData td;
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AVFrame *out;
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if (s->passthrough)
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return ff_filter_frame(outlink, in);
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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|
|
if (!out) {
|
||
|
|
av_frame_free(&in);
|
||
|
|
return AVERROR(ENOMEM);
|
||
|
|
}
|
||
|
|
av_frame_copy_props(out, in);
|
||
|
|
|
||
|
|
if (in->sample_aspect_ratio.num == 0) {
|
||
|
|
out->sample_aspect_ratio = in->sample_aspect_ratio;
|
||
|
|
} else {
|
||
|
|
out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
|
||
|
|
out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
|
||
|
|
}
|
||
|
|
|
||
|
|
td.in = in, td.out = out;
|
||
|
|
ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
|
||
|
|
av_frame_free(&in);
|
||
|
|
return ff_filter_frame(outlink, out);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define OFFSET(x) offsetof(TransContext, x)
|
||
|
|
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
|
||
|
|
|
||
|
|
static const AVOption transpose_options[] = {
|
||
|
|
{ "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" },
|
||
|
|
{ "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
|
||
|
|
{ "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" },
|
||
|
|
{ "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" },
|
||
|
|
{ "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
|
||
|
|
|
||
|
|
{ "passthrough", "do not apply transposition if the input matches the specified geometry",
|
||
|
|
OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
|
||
|
|
{ "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
|
||
|
|
{ "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
|
||
|
|
{ "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
|
||
|
|
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
AVFILTER_DEFINE_CLASS(transpose);
|
||
|
|
|
||
|
|
static const AVFilterPad avfilter_vf_transpose_inputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.get_video_buffer = get_video_buffer,
|
||
|
|
.filter_frame = filter_frame,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
static const AVFilterPad avfilter_vf_transpose_outputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.config_props = config_props_output,
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
AVFilter ff_vf_transpose = {
|
||
|
|
.name = "transpose",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Transpose input video."),
|
||
|
|
.priv_size = sizeof(TransContext),
|
||
|
|
.priv_class = &transpose_class,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.inputs = avfilter_vf_transpose_inputs,
|
||
|
|
.outputs = avfilter_vf_transpose_outputs,
|
||
|
|
.flags = AVFILTER_FLAG_SLICE_THREADS,
|
||
|
|
};
|