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
62 void (*transpose_8x8)(uint8_t *src, ptrdiff_t src_linesize,
63 uint8_t *dst, ptrdiff_t dst_linesize);
64 void (*transpose_block)(uint8_t *src, ptrdiff_t src_linesize,
65 uint8_t *dst, ptrdiff_t dst_linesize,
69 static int query_formats(AVFilterContext *ctx)
71 AVFilterFormats *pix_fmts = NULL;
74 for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
75 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
76 if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
77 desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
78 desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
79 desc->log2_chroma_w != desc->log2_chroma_h) &&
80 (ret = ff_add_format(&pix_fmts, fmt)) < 0)
85 return ff_set_common_formats(ctx, pix_fmts);
88 static inline void transpose_block_8_c(uint8_t *src, ptrdiff_t src_linesize,
89 uint8_t *dst, ptrdiff_t dst_linesize,
93 for (y = 0; y < h; y++, dst += dst_linesize, src++)
94 for (x = 0; x < w; x++)
95 dst[x] = src[x*src_linesize];
98 static void transpose_8x8_8_c(uint8_t *src, ptrdiff_t src_linesize,
99 uint8_t *dst, ptrdiff_t dst_linesize)
101 transpose_block_8_c(src, src_linesize, dst, dst_linesize, 8, 8);
104 static inline void transpose_block_16_c(uint8_t *src, ptrdiff_t src_linesize,
105 uint8_t *dst, ptrdiff_t dst_linesize,
109 for (y = 0; y < h; y++, dst += dst_linesize, src += 2)
110 for (x = 0; x < w; x++)
111 *((uint16_t *)(dst + 2*x)) = *((uint16_t *)(src + x*src_linesize));
114 static void transpose_8x8_16_c(uint8_t *src, ptrdiff_t src_linesize,
115 uint8_t *dst, ptrdiff_t dst_linesize)
117 transpose_block_16_c(src, src_linesize, dst, dst_linesize, 8, 8);
120 static inline void transpose_block_24_c(uint8_t *src, ptrdiff_t src_linesize,
121 uint8_t *dst, ptrdiff_t dst_linesize,
125 for (y = 0; y < h; y++, dst += dst_linesize) {
126 for (x = 0; x < w; x++) {
127 int32_t v = AV_RB24(src + x*src_linesize + y*3);
128 AV_WB24(dst + 3*x, v);
133 static void transpose_8x8_24_c(uint8_t *src, ptrdiff_t src_linesize,
134 uint8_t *dst, ptrdiff_t dst_linesize)
136 transpose_block_24_c(src, src_linesize, dst, dst_linesize, 8, 8);
139 static inline void transpose_block_32_c(uint8_t *src, ptrdiff_t src_linesize,
140 uint8_t *dst, ptrdiff_t dst_linesize,
144 for (y = 0; y < h; y++, dst += dst_linesize, src += 4) {
145 for (x = 0; x < w; x++)
146 *((uint32_t *)(dst + 4*x)) = *((uint32_t *)(src + x*src_linesize));
150 static void transpose_8x8_32_c(uint8_t *src, ptrdiff_t src_linesize,
151 uint8_t *dst, ptrdiff_t dst_linesize)
153 transpose_block_32_c(src, src_linesize, dst, dst_linesize, 8, 8);
156 static inline void transpose_block_48_c(uint8_t *src, ptrdiff_t src_linesize,
157 uint8_t *dst, ptrdiff_t dst_linesize,
161 for (y = 0; y < h; y++, dst += dst_linesize, src += 6) {
162 for (x = 0; x < w; x++) {
163 int64_t v = AV_RB48(src + x*src_linesize);
164 AV_WB48(dst + 6*x, v);
169 static void transpose_8x8_48_c(uint8_t *src, ptrdiff_t src_linesize,
170 uint8_t *dst, ptrdiff_t dst_linesize)
172 transpose_block_48_c(src, src_linesize, dst, dst_linesize, 8, 8);
175 static inline void transpose_block_64_c(uint8_t *src, ptrdiff_t src_linesize,
176 uint8_t *dst, ptrdiff_t dst_linesize,
180 for (y = 0; y < h; y++, dst += dst_linesize, src += 8)
181 for (x = 0; x < w; x++)
182 *((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x*src_linesize));
185 static void transpose_8x8_64_c(uint8_t *src, ptrdiff_t src_linesize,
186 uint8_t *dst, ptrdiff_t dst_linesize)
188 transpose_block_64_c(src, src_linesize, dst, dst_linesize, 8, 8);
191 static int config_props_output(AVFilterLink *outlink)
193 AVFilterContext *ctx = outlink->src;
194 TransContext *s = ctx->priv;
195 AVFilterLink *inlink = ctx->inputs[0];
196 const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
197 const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
200 av_log(ctx, AV_LOG_WARNING,
201 "dir values greater than 3 are deprecated, use the passthrough option instead\n");
203 s->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE;
206 if ((inlink->w >= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
207 (inlink->w <= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
208 av_log(ctx, AV_LOG_VERBOSE,
209 "w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
210 inlink->w, inlink->h, inlink->w, inlink->h);
213 s->passthrough = TRANSPOSE_PT_TYPE_NONE;
216 s->hsub = desc_in->log2_chroma_w;
217 s->vsub = desc_in->log2_chroma_h;
219 av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
221 outlink->w = inlink->h;
222 outlink->h = inlink->w;
224 if (inlink->sample_aspect_ratio.num)
225 outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 },
226 inlink->sample_aspect_ratio);
228 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
230 switch (s->pixsteps[0]) {
231 case 1: s->transpose_block = transpose_block_8_c;
232 s->transpose_8x8 = transpose_8x8_8_c; break;
233 case 2: s->transpose_block = transpose_block_16_c;
234 s->transpose_8x8 = transpose_8x8_16_c; break;
235 case 3: s->transpose_block = transpose_block_24_c;
236 s->transpose_8x8 = transpose_8x8_24_c; break;
237 case 4: s->transpose_block = transpose_block_32_c;
238 s->transpose_8x8 = transpose_8x8_32_c; break;
239 case 6: s->transpose_block = transpose_block_48_c;
240 s->transpose_8x8 = transpose_8x8_48_c; break;
241 case 8: s->transpose_block = transpose_block_64_c;
242 s->transpose_8x8 = transpose_8x8_64_c; break;
245 av_log(ctx, AV_LOG_VERBOSE,
246 "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
247 inlink->w, inlink->h, s->dir, outlink->w, outlink->h,
248 s->dir == 1 || s->dir == 3 ? "clockwise" : "counterclockwise",
249 s->dir == 0 || s->dir == 3);
253 static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
255 TransContext *s = inlink->dst->priv;
257 return s->passthrough ?
258 ff_null_get_video_buffer (inlink, w, h) :
259 ff_default_get_video_buffer(inlink, w, h);
262 typedef struct ThreadData {
266 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
269 TransContext *s = ctx->priv;
270 ThreadData *td = arg;
271 AVFrame *out = td->out;
272 AVFrame *in = td->in;
275 for (plane = 0; out->data[plane]; plane++) {
276 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
277 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
278 int pixstep = s->pixsteps[plane];
279 int inh = AV_CEIL_RSHIFT(in->height, vsub);
280 int outw = AV_CEIL_RSHIFT(out->width, hsub);
281 int outh = AV_CEIL_RSHIFT(out->height, vsub);
282 int start = (outh * jobnr ) / nb_jobs;
283 int end = (outh * (jobnr+1)) / nb_jobs;
285 int dstlinesize, srclinesize;
288 dstlinesize = out->linesize[plane];
289 dst = out->data[plane] + start * dstlinesize;
290 src = in->data[plane];
291 srclinesize = in->linesize[plane];
294 src += in->linesize[plane] * (inh - 1);
299 dst = out->data[plane] + dstlinesize * (outh - start - 1);
303 for (y = start; y < end - 7; y += 8) {
304 for (x = 0; x < outw - 7; x += 8) {
305 s->transpose_8x8(src + x * srclinesize + y * pixstep,
307 dst + (y - start) * dstlinesize + x * pixstep,
310 if (outw - x > 0 && end - y > 0)
311 s->transpose_block(src + x * srclinesize + y * pixstep,
313 dst + (y - start) * dstlinesize + x * pixstep,
314 dstlinesize, outw - x, end - y);
318 s->transpose_block(src + 0 * srclinesize + y * pixstep,
320 dst + (y - start) * dstlinesize + 0 * pixstep,
321 dstlinesize, outw, end - y);
327 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
329 AVFilterContext *ctx = inlink->dst;
330 TransContext *s = ctx->priv;
331 AVFilterLink *outlink = ctx->outputs[0];
336 return ff_filter_frame(outlink, in);
338 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
341 return AVERROR(ENOMEM);
343 av_frame_copy_props(out, in);
345 if (in->sample_aspect_ratio.num == 0) {
346 out->sample_aspect_ratio = in->sample_aspect_ratio;
348 out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
349 out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
352 td.in = in, td.out = out;
353 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
355 return ff_filter_frame(outlink, out);
358 #define OFFSET(x) offsetof(TransContext, x)
359 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
361 static const AVOption transpose_options[] = {
362 { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" },
363 { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
364 { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" },
365 { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" },
366 { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
368 { "passthrough", "do not apply transposition if the input matches the specified geometry",
369 OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
370 { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
371 { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
372 { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
377 AVFILTER_DEFINE_CLASS(transpose);
379 static const AVFilterPad avfilter_vf_transpose_inputs[] = {
382 .type = AVMEDIA_TYPE_VIDEO,
383 .get_video_buffer = get_video_buffer,
384 .filter_frame = filter_frame,
389 static const AVFilterPad avfilter_vf_transpose_outputs[] = {
392 .config_props = config_props_output,
393 .type = AVMEDIA_TYPE_VIDEO,
398 AVFilter ff_vf_transpose = {
400 .description = NULL_IF_CONFIG_SMALL("Transpose input video."),
401 .priv_size = sizeof(TransContext),
402 .priv_class = &transpose_class,
403 .query_formats = query_formats,
404 .inputs = avfilter_vf_transpose_inputs,
405 .outputs = avfilter_vf_transpose_outputs,
406 .flags = AVFILTER_FLAG_SLICE_THREADS,