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/intreadwrite.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/internal.h"
41 TRANSPOSE_PT_TYPE_NONE,
42 TRANSPOSE_PT_TYPE_LANDSCAPE,
43 TRANSPOSE_PT_TYPE_PORTRAIT,
51 /* 0 Rotate by 90 degrees counterclockwise and vflip. */
52 /* 1 Rotate by 90 degrees clockwise. */
53 /* 2 Rotate by 90 degrees counterclockwise. */
54 /* 3 Rotate by 90 degrees clockwise and vflip. */
56 PassthroughType passthrough; ///< landscape passthrough mode enabled
59 #define OFFSET(x) offsetof(TransContext, x)
60 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
62 static const AVOption transpose_options[] = {
63 { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, {.i64=0}, 0, 7, FLAGS },
65 { "passthrough", "do not apply transposition if the input matches the specified geometry",
66 OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
67 { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
68 { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
69 { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
74 AVFILTER_DEFINE_CLASS(transpose);
76 static av_cold int init(AVFilterContext *ctx, const char *args)
78 TransContext *trans = ctx->priv;
79 const char *shorthand[] = { "dir", "passthrough", NULL };
81 trans->class = &transpose_class;
82 av_opt_set_defaults(trans);
84 return av_opt_set_from_string(trans, args, shorthand, "=", ":");
87 static int query_formats(AVFilterContext *ctx)
89 enum PixelFormat pix_fmts[] = {
90 PIX_FMT_ARGB, PIX_FMT_RGBA,
91 PIX_FMT_ABGR, PIX_FMT_BGRA,
92 PIX_FMT_RGB24, PIX_FMT_BGR24,
93 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE,
94 PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
95 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE,
96 PIX_FMT_BGR555BE, PIX_FMT_BGR555LE,
97 PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE,
98 PIX_FMT_YUV420P16LE, PIX_FMT_YUV420P16BE,
99 PIX_FMT_YUV444P16LE, PIX_FMT_YUV444P16BE,
100 PIX_FMT_NV12, PIX_FMT_NV21,
101 PIX_FMT_RGB8, PIX_FMT_BGR8,
102 PIX_FMT_RGB4_BYTE, PIX_FMT_BGR4_BYTE,
103 PIX_FMT_YUV444P, PIX_FMT_YUVJ444P,
104 PIX_FMT_YUV420P, PIX_FMT_YUVJ420P,
106 PIX_FMT_YUVA420P, PIX_FMT_GRAY8,
110 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
114 static int config_props_output(AVFilterLink *outlink)
116 AVFilterContext *ctx = outlink->src;
117 TransContext *trans = ctx->priv;
118 AVFilterLink *inlink = ctx->inputs[0];
119 const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[outlink->format];
122 av_log(ctx, AV_LOG_WARNING,
123 "dir values greater than 3 are deprecated, use the passthrough option instead\n");
125 trans->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE;
128 if ((inlink->w >= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
129 (inlink->w <= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
130 av_log(ctx, AV_LOG_VERBOSE,
131 "w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
132 inlink->w, inlink->h, inlink->w, inlink->h);
135 trans->passthrough = TRANSPOSE_PT_TYPE_NONE;
138 trans->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
139 trans->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
141 av_image_fill_max_pixsteps(trans->pixsteps, NULL, pixdesc);
143 outlink->w = inlink->h;
144 outlink->h = inlink->w;
146 if (inlink->sample_aspect_ratio.num){
147 outlink->sample_aspect_ratio = av_div_q((AVRational){1,1}, inlink->sample_aspect_ratio);
149 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
151 av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
152 inlink->w, inlink->h, trans->dir, outlink->w, outlink->h,
153 trans->dir == 1 || trans->dir == 3 ? "clockwise" : "counterclockwise",
154 trans->dir == 0 || trans->dir == 3);
158 static AVFilterBufferRef *get_video_buffer(AVFilterLink *inlink, int perms, int w, int h)
160 TransContext *trans = inlink->dst->priv;
162 return trans->passthrough ?
163 ff_null_get_video_buffer (inlink, perms, w, h) :
164 ff_default_get_video_buffer(inlink, perms, w, h);
167 static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
169 TransContext *trans = inlink->dst->priv;
170 AVFilterLink *outlink = inlink->dst->outputs[0];
171 AVFilterBufferRef *buf_out;
173 if (trans->passthrough)
174 return ff_null_start_frame(inlink, picref);
176 outlink->out_buf = ff_get_video_buffer(outlink, AV_PERM_WRITE,
177 outlink->w, outlink->h);
178 if (!outlink->out_buf)
179 return AVERROR(ENOMEM);
181 outlink->out_buf->pts = picref->pts;
183 if (picref->video->sample_aspect_ratio.num == 0) {
184 outlink->out_buf->video->sample_aspect_ratio = picref->video->sample_aspect_ratio;
186 outlink->out_buf->video->sample_aspect_ratio.num = picref->video->sample_aspect_ratio.den;
187 outlink->out_buf->video->sample_aspect_ratio.den = picref->video->sample_aspect_ratio.num;
190 buf_out = avfilter_ref_buffer(outlink->out_buf, ~0);
192 return AVERROR(ENOMEM);
193 return ff_start_frame(outlink, buf_out);
196 static int end_frame(AVFilterLink *inlink)
198 TransContext *trans = inlink->dst->priv;
199 AVFilterBufferRef *inpic = inlink->cur_buf;
200 AVFilterBufferRef *outpic = inlink->dst->outputs[0]->out_buf;
201 AVFilterLink *outlink = inlink->dst->outputs[0];
204 if (trans->passthrough)
205 return ff_null_end_frame(inlink);
207 for (plane = 0; outpic->data[plane]; plane++) {
208 int hsub = plane == 1 || plane == 2 ? trans->hsub : 0;
209 int vsub = plane == 1 || plane == 2 ? trans->vsub : 0;
210 int pixstep = trans->pixsteps[plane];
211 int inh = inpic->video->h>>vsub;
212 int outw = outpic->video->w>>hsub;
213 int outh = outpic->video->h>>vsub;
215 int outlinesize, inlinesize;
218 out = outpic->data[plane]; outlinesize = outpic->linesize[plane];
219 in = inpic ->data[plane]; inlinesize = inpic ->linesize[plane];
222 in += inpic->linesize[plane] * (inh-1);
227 out += outpic->linesize[plane] * (outh-1);
231 for (y = 0; y < outh; y++) {
234 for (x = 0; x < outw; x++)
235 out[x] = in[x*inlinesize + y];
238 for (x = 0; x < outw; x++)
239 *((uint16_t *)(out + 2*x)) = *((uint16_t *)(in + x*inlinesize + y*2));
242 for (x = 0; x < outw; x++) {
243 int32_t v = AV_RB24(in + x*inlinesize + y*3);
244 AV_WB24(out + 3*x, v);
248 for (x = 0; x < outw; x++)
249 *((uint32_t *)(out + 4*x)) = *((uint32_t *)(in + x*inlinesize + y*4));
256 if ((ret = ff_draw_slice(outlink, 0, outpic->video->h, 1)) < 0 ||
257 (ret = ff_end_frame(outlink)) < 0)
262 static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
264 TransContext *trans = inlink->dst->priv;
266 return trans->passthrough ? ff_null_draw_slice(inlink, y, h, slice_dir) : 0;
269 AVFilter avfilter_vf_transpose = {
271 .description = NULL_IF_CONFIG_SMALL("Transpose input video."),
274 .priv_size = sizeof(TransContext),
276 .query_formats = query_formats,
278 .inputs = (const AVFilterPad[]) {{ .name = "default",
279 .type = AVMEDIA_TYPE_VIDEO,
280 .get_video_buffer= get_video_buffer,
281 .start_frame = start_frame,
282 .draw_slice = draw_slice,
283 .end_frame = end_frame,
284 .min_perms = AV_PERM_READ, },
286 .outputs = (const AVFilterPad[]) {{ .name = "default",
287 .config_props = config_props_output,
288 .type = AVMEDIA_TYPE_VIDEO, },
290 .priv_class = &transpose_class,