/* * Copyright (c) 2010 Stefano Sabatini * Copyright (c) 2008 Vitor Sessak * * 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 */ /** * @file * transposition filter * Based on MPlayer libmpcodecs/vf_rotate.c. */ #include <stdio.h> #include "libavutil/imgutils.h" #include "libavutil/internal.h" #include "libavutil/intreadwrite.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "avfilter.h" #include "formats.h" #include "internal.h" #include "video.h" typedef enum { TRANSPOSE_PT_TYPE_NONE, TRANSPOSE_PT_TYPE_LANDSCAPE, TRANSPOSE_PT_TYPE_PORTRAIT, } PassthroughType; enum TransposeDir { TRANSPOSE_CCLOCK_FLIP, TRANSPOSE_CLOCK, TRANSPOSE_CCLOCK, TRANSPOSE_CLOCK_FLIP, }; typedef struct TransContext { const AVClass *class; int hsub, vsub; int pixsteps[4]; int passthrough; ///< PassthroughType, landscape passthrough mode enabled int dir; ///< TransposeDir } TransContext; static int query_formats(AVFilterContext *ctx) { AVFilterFormats *pix_fmts = NULL; int fmt; for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt); if (!(desc->flags & AV_PIX_FMT_FLAG_PAL || desc->flags & AV_PIX_FMT_FLAG_HWACCEL || desc->flags & AV_PIX_FMT_FLAG_BITSTREAM || desc->log2_chroma_w != desc->log2_chroma_h)) ff_add_format(&pix_fmts, fmt); } return ff_set_common_formats(ctx, pix_fmts); } static int config_props_output(AVFilterLink *outlink) { AVFilterContext *ctx = outlink->src; TransContext *trans = ctx->priv; AVFilterLink *inlink = ctx->inputs[0]; const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format); const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format); if (trans->dir&4) { av_log(ctx, AV_LOG_WARNING, "dir values greater than 3 are deprecated, use the passthrough option instead\n"); trans->dir &= 3; trans->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE; } if ((inlink->w >= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) || (inlink->w <= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) { av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d (passthrough mode)\n", inlink->w, inlink->h, inlink->w, inlink->h); return 0; } else { trans->passthrough = TRANSPOSE_PT_TYPE_NONE; } trans->hsub = desc_in->log2_chroma_w; trans->vsub = desc_in->log2_chroma_h; av_image_fill_max_pixsteps(trans->pixsteps, NULL, desc_out); outlink->w = inlink->h; outlink->h = inlink->w; if (inlink->sample_aspect_ratio.num) outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 }, inlink->sample_aspect_ratio); else outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n", inlink->w, inlink->h, trans->dir, outlink->w, outlink->h, trans->dir == 1 || trans->dir == 3 ? "clockwise" : "counterclockwise", trans->dir == 0 || trans->dir == 3); return 0; } static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h) { TransContext *trans = inlink->dst->priv; return trans->passthrough ? ff_null_get_video_buffer (inlink, w, h) : ff_default_get_video_buffer(inlink, w, h); } typedef struct ThreadData { AVFrame *in, *out; } ThreadData; static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) { TransContext *trans = ctx->priv; ThreadData *td = arg; AVFrame *out = td->out; AVFrame *in = td->in; int plane; for (plane = 0; out->data[plane]; plane++) { int hsub = plane == 1 || plane == 2 ? trans->hsub : 0; int vsub = plane == 1 || plane == 2 ? trans->vsub : 0; int pixstep = trans->pixsteps[plane]; int inh = in->height >> vsub; int outw = FF_CEIL_RSHIFT(out->width, hsub); int outh = FF_CEIL_RSHIFT(out->height, vsub); int start = (outh * jobnr ) / nb_jobs; int end = (outh * (jobnr+1)) / nb_jobs; uint8_t *dst, *src; int dstlinesize, srclinesize; int x, y; dstlinesize = out->linesize[plane]; dst = out->data[plane] + start * dstlinesize; src = in->data[plane]; srclinesize = in->linesize[plane]; if (trans->dir & 1) { src += in->linesize[plane] * (inh - 1); srclinesize *= -1; } if (trans->dir & 2) { dst = out->data[plane] + dstlinesize * (outh - start - 1); dstlinesize *= -1; } switch (pixstep) { case 1: for (y = start; y < end; y++, dst += dstlinesize) for (x = 0; x < outw; x++) dst[x] = src[x * srclinesize + y]; break; case 2: for (y = start; y < end; y++, dst += dstlinesize) { for (x = 0; x < outw; x++) *((uint16_t *)(dst + 2 * x)) = *((uint16_t *)(src + x * srclinesize + y * 2)); } break; case 3: for (y = start; y < end; y++, dst += dstlinesize) { for (x = 0; x < outw; x++) { int32_t v = AV_RB24(src + x * srclinesize + y * 3); AV_WB24(dst + 3 * x, v); } } break; case 4: for (y = start; y < end; y++, dst += dstlinesize) { for (x = 0; x < outw; x++) *((uint32_t *)(dst + 4 * x)) = *((uint32_t *)(src + x * srclinesize + y * 4)); } break; case 6: for (y = start; y < end; y++, dst += dstlinesize) { for (x = 0; x < outw; x++) { int64_t v = AV_RB48(src + x * srclinesize + y*6); AV_WB48(dst + 6*x, v); } } break; case 8: for (y = start; y < end; y++, dst += dstlinesize) { for (x = 0; x < outw; x++) *((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x * srclinesize + y*8)); } break; } } return 0; } static int filter_frame(AVFilterLink *inlink, AVFrame *in) { AVFilterContext *ctx = inlink->dst; TransContext *trans = ctx->priv; AVFilterLink *outlink = ctx->outputs[0]; ThreadData td; AVFrame *out; if (trans->passthrough) return ff_filter_frame(outlink, in); out = ff_get_video_buffer(outlink, outlink->w, outlink->h); 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, ctx->graph->nb_threads)); 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 }, .unit = "dir" }, { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .unit = "dir" }, { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .unit = "dir" }, { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .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, };