blob: 75b4dda41f4b3a9ff43d1b0ad0adfd84f5a5b0c9
1 | /* |
2 | * Copyright (c) 2010 Stefano Sabatini |
3 | * Copyright (c) 2008 Vitor Sessak |
4 | * |
5 | * This file is part of FFmpeg. |
6 | * |
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. |
11 | * |
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. |
16 | * |
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 |
20 | */ |
21 | |
22 | /** |
23 | * @file |
24 | * transposition filter |
25 | * Based on MPlayer libmpcodecs/vf_rotate.c. |
26 | */ |
27 | |
28 | #include <stdio.h> |
29 | |
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" |
35 | |
36 | #include "avfilter.h" |
37 | #include "formats.h" |
38 | #include "internal.h" |
39 | #include "video.h" |
40 | |
41 | typedef enum { |
42 | TRANSPOSE_PT_TYPE_NONE, |
43 | TRANSPOSE_PT_TYPE_LANDSCAPE, |
44 | TRANSPOSE_PT_TYPE_PORTRAIT, |
45 | } PassthroughType; |
46 | |
47 | enum TransposeDir { |
48 | TRANSPOSE_CCLOCK_FLIP, |
49 | TRANSPOSE_CLOCK, |
50 | TRANSPOSE_CCLOCK, |
51 | TRANSPOSE_CLOCK_FLIP, |
52 | }; |
53 | |
54 | typedef struct TransContext { |
55 | const AVClass *class; |
56 | int hsub, vsub; |
57 | int pixsteps[4]; |
58 | |
59 | int passthrough; ///< PassthroughType, landscape passthrough mode enabled |
60 | int dir; ///< TransposeDir |
61 | } TransContext; |
62 | |
63 | static int query_formats(AVFilterContext *ctx) |
64 | { |
65 | AVFilterFormats *pix_fmts = NULL; |
66 | int fmt, ret; |
67 | |
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 | (ret = ff_add_format(&pix_fmts, fmt)) < 0) |
75 | return ret; |
76 | } |
77 | |
78 | |
79 | return ff_set_common_formats(ctx, pix_fmts); |
80 | } |
81 | |
82 | static int config_props_output(AVFilterLink *outlink) |
83 | { |
84 | AVFilterContext *ctx = outlink->src; |
85 | TransContext *s = ctx->priv; |
86 | AVFilterLink *inlink = ctx->inputs[0]; |
87 | const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format); |
88 | const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format); |
89 | |
90 | if (s->dir&4) { |
91 | av_log(ctx, AV_LOG_WARNING, |
92 | "dir values greater than 3 are deprecated, use the passthrough option instead\n"); |
93 | s->dir &= 3; |
94 | s->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE; |
95 | } |
96 | |
97 | if ((inlink->w >= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) || |
98 | (inlink->w <= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) { |
99 | av_log(ctx, AV_LOG_VERBOSE, |
100 | "w:%d h:%d -> w:%d h:%d (passthrough mode)\n", |
101 | inlink->w, inlink->h, inlink->w, inlink->h); |
102 | return 0; |
103 | } else { |
104 | s->passthrough = TRANSPOSE_PT_TYPE_NONE; |
105 | } |
106 | |
107 | s->hsub = desc_in->log2_chroma_w; |
108 | s->vsub = desc_in->log2_chroma_h; |
109 | |
110 | av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out); |
111 | |
112 | outlink->w = inlink->h; |
113 | outlink->h = inlink->w; |
114 | |
115 | if (inlink->sample_aspect_ratio.num) |
116 | outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 }, |
117 | inlink->sample_aspect_ratio); |
118 | else |
119 | outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; |
120 | |
121 | av_log(ctx, AV_LOG_VERBOSE, |
122 | "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n", |
123 | inlink->w, inlink->h, s->dir, outlink->w, outlink->h, |
124 | s->dir == 1 || s->dir == 3 ? "clockwise" : "counterclockwise", |
125 | s->dir == 0 || s->dir == 3); |
126 | return 0; |
127 | } |
128 | |
129 | static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h) |
130 | { |
131 | TransContext *s = inlink->dst->priv; |
132 | |
133 | return s->passthrough ? |
134 | ff_null_get_video_buffer (inlink, w, h) : |
135 | ff_default_get_video_buffer(inlink, w, h); |
136 | } |
137 | |
138 | typedef struct ThreadData { |
139 | AVFrame *in, *out; |
140 | } ThreadData; |
141 | |
142 | static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, |
143 | int nb_jobs) |
144 | { |
145 | TransContext *s = ctx->priv; |
146 | ThreadData *td = arg; |
147 | AVFrame *out = td->out; |
148 | AVFrame *in = td->in; |
149 | int plane; |
150 | |
151 | for (plane = 0; out->data[plane]; plane++) { |
152 | int hsub = plane == 1 || plane == 2 ? s->hsub : 0; |
153 | int vsub = plane == 1 || plane == 2 ? s->vsub : 0; |
154 | int pixstep = s->pixsteps[plane]; |
155 | int inh = AV_CEIL_RSHIFT(in->height, vsub); |
156 | int outw = AV_CEIL_RSHIFT(out->width, hsub); |
157 | int outh = AV_CEIL_RSHIFT(out->height, vsub); |
158 | int start = (outh * jobnr ) / nb_jobs; |
159 | int end = (outh * (jobnr+1)) / nb_jobs; |
160 | uint8_t *dst, *src; |
161 | int dstlinesize, srclinesize; |
162 | int x, y; |
163 | |
164 | dstlinesize = out->linesize[plane]; |
165 | dst = out->data[plane] + start * dstlinesize; |
166 | src = in->data[plane]; |
167 | srclinesize = in->linesize[plane]; |
168 | |
169 | if (s->dir & 1) { |
170 | src += in->linesize[plane] * (inh - 1); |
171 | srclinesize *= -1; |
172 | } |
173 | |
174 | if (s->dir & 2) { |
175 | dst = out->data[plane] + dstlinesize * (outh - start - 1); |
176 | dstlinesize *= -1; |
177 | } |
178 | |
179 | switch (pixstep) { |
180 | case 1: |
181 | for (y = start; y < end; y++, dst += dstlinesize) |
182 | for (x = 0; x < outw; x++) |
183 | dst[x] = src[x * srclinesize + y]; |
184 | break; |
185 | case 2: |
186 | for (y = start; y < end; y++, dst += dstlinesize) { |
187 | for (x = 0; x < outw; x++) |
188 | *((uint16_t *)(dst + 2 * x)) = |
189 | *((uint16_t *)(src + x * srclinesize + y * 2)); |
190 | } |
191 | break; |
192 | case 3: |
193 | for (y = start; y < end; y++, dst += dstlinesize) { |
194 | for (x = 0; x < outw; x++) { |
195 | int32_t v = AV_RB24(src + x * srclinesize + y * 3); |
196 | AV_WB24(dst + 3 * x, v); |
197 | } |
198 | } |
199 | break; |
200 | case 4: |
201 | for (y = start; y < end; y++, dst += dstlinesize) { |
202 | for (x = 0; x < outw; x++) |
203 | *((uint32_t *)(dst + 4 * x)) = |
204 | *((uint32_t *)(src + x * srclinesize + y * 4)); |
205 | } |
206 | break; |
207 | case 6: |
208 | for (y = start; y < end; y++, dst += dstlinesize) { |
209 | for (x = 0; x < outw; x++) { |
210 | int64_t v = AV_RB48(src + x * srclinesize + y*6); |
211 | AV_WB48(dst + 6*x, v); |
212 | } |
213 | } |
214 | break; |
215 | case 8: |
216 | for (y = start; y < end; y++, dst += dstlinesize) { |
217 | for (x = 0; x < outw; x++) |
218 | *((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x * srclinesize + y*8)); |
219 | } |
220 | break; |
221 | } |
222 | } |
223 | |
224 | return 0; |
225 | } |
226 | |
227 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
228 | { |
229 | AVFilterContext *ctx = inlink->dst; |
230 | TransContext *s = ctx->priv; |
231 | AVFilterLink *outlink = ctx->outputs[0]; |
232 | ThreadData td; |
233 | AVFrame *out; |
234 | |
235 | if (s->passthrough) |
236 | return ff_filter_frame(outlink, in); |
237 | |
238 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
239 | if (!out) { |
240 | av_frame_free(&in); |
241 | return AVERROR(ENOMEM); |
242 | } |
243 | av_frame_copy_props(out, in); |
244 | |
245 | if (in->sample_aspect_ratio.num == 0) { |
246 | out->sample_aspect_ratio = in->sample_aspect_ratio; |
247 | } else { |
248 | out->sample_aspect_ratio.num = in->sample_aspect_ratio.den; |
249 | out->sample_aspect_ratio.den = in->sample_aspect_ratio.num; |
250 | } |
251 | |
252 | td.in = in, td.out = out; |
253 | ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx))); |
254 | av_frame_free(&in); |
255 | return ff_filter_frame(outlink, out); |
256 | } |
257 | |
258 | #define OFFSET(x) offsetof(TransContext, x) |
259 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
260 | |
261 | static const AVOption transpose_options[] = { |
262 | { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" }, |
263 | { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" }, |
264 | { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" }, |
265 | { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" }, |
266 | { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" }, |
267 | |
268 | { "passthrough", "do not apply transposition if the input matches the specified geometry", |
269 | OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" }, |
270 | { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
271 | { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
272 | { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
273 | |
274 | { NULL } |
275 | }; |
276 | |
277 | AVFILTER_DEFINE_CLASS(transpose); |
278 | |
279 | static const AVFilterPad avfilter_vf_transpose_inputs[] = { |
280 | { |
281 | .name = "default", |
282 | .type = AVMEDIA_TYPE_VIDEO, |
283 | .get_video_buffer = get_video_buffer, |
284 | .filter_frame = filter_frame, |
285 | }, |
286 | { NULL } |
287 | }; |
288 | |
289 | static const AVFilterPad avfilter_vf_transpose_outputs[] = { |
290 | { |
291 | .name = "default", |
292 | .config_props = config_props_output, |
293 | .type = AVMEDIA_TYPE_VIDEO, |
294 | }, |
295 | { NULL } |
296 | }; |
297 | |
298 | AVFilter ff_vf_transpose = { |
299 | .name = "transpose", |
300 | .description = NULL_IF_CONFIG_SMALL("Transpose input video."), |
301 | .priv_size = sizeof(TransContext), |
302 | .priv_class = &transpose_class, |
303 | .query_formats = query_formats, |
304 | .inputs = avfilter_vf_transpose_inputs, |
305 | .outputs = avfilter_vf_transpose_outputs, |
306 | .flags = AVFILTER_FLAG_SLICE_THREADS, |
307 | }; |
308 |