2 * Copyright (c) 2010 Stefano Sabatini
3 * Copyright (c) 2008 Vitor Sessak
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * transposition filter
25 * Based on MPlayer libmpcodecs/vf_rotate.c.
30 #include "libavutil/imgutils.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
42 TRANSPOSE_PT_TYPE_NONE,
43 TRANSPOSE_PT_TYPE_LANDSCAPE,
44 TRANSPOSE_PT_TYPE_PORTRAIT,
48 TRANSPOSE_CCLOCK_FLIP,
54 typedef struct TransContext {
59 int passthrough; ///< PassthroughType, landscape passthrough mode enabled
60 int dir; ///< TransposeDir
63 static int query_formats(AVFilterContext *ctx)
65 AVFilterFormats *pix_fmts = NULL;
68 for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
69 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
70 if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
71 desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
72 desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
73 desc->log2_chroma_w != desc->log2_chroma_h))
74 ff_add_format(&pix_fmts, fmt);
78 return ff_set_common_formats(ctx, pix_fmts);
81 static int config_props_output(AVFilterLink *outlink)
83 AVFilterContext *ctx = outlink->src;
84 TransContext *s = ctx->priv;
85 AVFilterLink *inlink = ctx->inputs[0];
86 const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
87 const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
90 av_log(ctx, AV_LOG_WARNING,
91 "dir values greater than 3 are deprecated, use the passthrough option instead\n");
93 s->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE;
96 if ((inlink->w >= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
97 (inlink->w <= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
98 av_log(ctx, AV_LOG_VERBOSE,
99 "w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
100 inlink->w, inlink->h, inlink->w, inlink->h);
103 s->passthrough = TRANSPOSE_PT_TYPE_NONE;
106 s->hsub = desc_in->log2_chroma_w;
107 s->vsub = desc_in->log2_chroma_h;
109 av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
111 outlink->w = inlink->h;
112 outlink->h = inlink->w;
114 if (inlink->sample_aspect_ratio.num)
115 outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 },
116 inlink->sample_aspect_ratio);
118 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
120 av_log(ctx, AV_LOG_VERBOSE,
121 "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
122 inlink->w, inlink->h, s->dir, outlink->w, outlink->h,
123 s->dir == 1 || s->dir == 3 ? "clockwise" : "counterclockwise",
124 s->dir == 0 || s->dir == 3);
128 static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
130 TransContext *s = inlink->dst->priv;
132 return s->passthrough ?
133 ff_null_get_video_buffer (inlink, w, h) :
134 ff_default_get_video_buffer(inlink, w, h);
137 typedef struct ThreadData {
141 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
144 TransContext *s = ctx->priv;
145 ThreadData *td = arg;
146 AVFrame *out = td->out;
147 AVFrame *in = td->in;
150 for (plane = 0; out->data[plane]; plane++) {
151 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
152 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
153 int pixstep = s->pixsteps[plane];
154 int inh = FF_CEIL_RSHIFT(in->height, vsub);
155 int outw = FF_CEIL_RSHIFT(out->width, hsub);
156 int outh = FF_CEIL_RSHIFT(out->height, vsub);
157 int start = (outh * jobnr ) / nb_jobs;
158 int end = (outh * (jobnr+1)) / nb_jobs;
160 int dstlinesize, srclinesize;
163 dstlinesize = out->linesize[plane];
164 dst = out->data[plane] + start * dstlinesize;
165 src = in->data[plane];
166 srclinesize = in->linesize[plane];
169 src += in->linesize[plane] * (inh - 1);
174 dst = out->data[plane] + dstlinesize * (outh - start - 1);
180 for (y = start; y < end; y++, dst += dstlinesize)
181 for (x = 0; x < outw; x++)
182 dst[x] = src[x * srclinesize + y];
185 for (y = start; y < end; y++, dst += dstlinesize) {
186 for (x = 0; x < outw; x++)
187 *((uint16_t *)(dst + 2 * x)) =
188 *((uint16_t *)(src + x * srclinesize + y * 2));
192 for (y = start; y < end; y++, dst += dstlinesize) {
193 for (x = 0; x < outw; x++) {
194 int32_t v = AV_RB24(src + x * srclinesize + y * 3);
195 AV_WB24(dst + 3 * x, v);
200 for (y = start; y < end; y++, dst += dstlinesize) {
201 for (x = 0; x < outw; x++)
202 *((uint32_t *)(dst + 4 * x)) =
203 *((uint32_t *)(src + x * srclinesize + y * 4));
207 for (y = start; y < end; y++, dst += dstlinesize) {
208 for (x = 0; x < outw; x++) {
209 int64_t v = AV_RB48(src + x * srclinesize + y*6);
210 AV_WB48(dst + 6*x, v);
215 for (y = start; y < end; y++, dst += dstlinesize) {
216 for (x = 0; x < outw; x++)
217 *((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x * srclinesize + y*8));
226 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
228 AVFilterContext *ctx = inlink->dst;
229 TransContext *s = ctx->priv;
230 AVFilterLink *outlink = ctx->outputs[0];
235 return ff_filter_frame(outlink, in);
237 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
240 return AVERROR(ENOMEM);
242 av_frame_copy_props(out, in);
244 if (in->sample_aspect_ratio.num == 0) {
245 out->sample_aspect_ratio = in->sample_aspect_ratio;
247 out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
248 out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
251 td.in = in, td.out = out;
252 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ctx->graph->nb_threads));
254 return ff_filter_frame(outlink, out);
257 #define OFFSET(x) offsetof(TransContext, x)
258 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
260 static const AVOption transpose_options[] = {
261 { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" },
262 { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .unit = "dir" },
263 { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .unit = "dir" },
264 { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .unit = "dir" },
265 { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .unit = "dir" },
267 { "passthrough", "do not apply transposition if the input matches the specified geometry",
268 OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
269 { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
270 { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
271 { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
276 AVFILTER_DEFINE_CLASS(transpose);
278 static const AVFilterPad avfilter_vf_transpose_inputs[] = {
281 .type = AVMEDIA_TYPE_VIDEO,
282 .get_video_buffer = get_video_buffer,
283 .filter_frame = filter_frame,
288 static const AVFilterPad avfilter_vf_transpose_outputs[] = {
291 .config_props = config_props_output,
292 .type = AVMEDIA_TYPE_VIDEO,
297 AVFilter ff_vf_transpose = {
299 .description = NULL_IF_CONFIG_SMALL("Transpose input video."),
300 .priv_size = sizeof(TransContext),
301 .priv_class = &transpose_class,
302 .query_formats = query_formats,
303 .inputs = avfilter_vf_transpose_inputs,
304 .outputs = avfilter_vf_transpose_outputs,
305 .flags = AVFILTER_FLAG_SLICE_THREADS,