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417 lines
14 KiB
417 lines
14 KiB
/* |
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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 "filters.h" |
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#include "formats.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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const AVPixFmtDescriptor *desc; |
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int fmt, ret; |
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for (fmt = 0; desc = av_pix_fmt_desc_get(fmt); 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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#endif |
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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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int err = 0; |
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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) { |
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err = AVERROR(ENOMEM); |
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goto fail; |
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} |
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err = av_frame_copy_props(out, in); |
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if (err < 0) |
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goto fail; |
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if (in->sample_aspect_ratio.num == 0) { |
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out->sample_aspect_ratio = in->sample_aspect_ratio; |
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} else { |
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out->sample_aspect_ratio.num = in->sample_aspect_ratio.den; |
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out->sample_aspect_ratio.den = in->sample_aspect_ratio.num; |
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} |
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td.in = in, td.out = out; |
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ff_filter_execute(ctx, filter_slice, &td, NULL, |
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FFMIN(outlink->h, ff_filter_get_nb_threads(ctx))); |
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av_frame_free(&in); |
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return ff_filter_frame(outlink, out); |
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fail: |
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av_frame_free(&in); |
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av_frame_free(&out); |
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return err; |
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} |
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#define OFFSET(x) offsetof(TransContext, x) |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
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static const AVOption transpose_options[] = { |
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{ "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, .unit = "dir" }, |
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{ "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" }, |
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{ "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" }, |
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{ "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" }, |
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{ "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" }, |
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{ "passthrough", "do not apply transposition if the input matches the specified geometry", |
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OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, .unit = "passthrough" }, |
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{ "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, .unit = "passthrough" }, |
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{ "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, .unit = "passthrough" }, |
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{ "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, .unit = "passthrough" }, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(transpose); |
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static const AVFilterPad avfilter_vf_transpose_inputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.get_buffer.video = get_video_buffer, |
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.filter_frame = filter_frame, |
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}, |
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}; |
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static const AVFilterPad avfilter_vf_transpose_outputs[] = { |
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{ |
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.name = "default", |
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.config_props = config_props_output, |
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.type = AVMEDIA_TYPE_VIDEO, |
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}, |
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}; |
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const AVFilter ff_vf_transpose = { |
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.name = "transpose", |
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.description = NULL_IF_CONFIG_SMALL("Transpose input video."), |
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.priv_size = sizeof(TransContext), |
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.priv_class = &transpose_class, |
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FILTER_INPUTS(avfilter_vf_transpose_inputs), |
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FILTER_OUTPUTS(avfilter_vf_transpose_outputs), |
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FILTER_QUERY_FUNC(query_formats), |
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.flags = AVFILTER_FLAG_SLICE_THREADS, |
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};
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