2 * ColorMatrix v2.2 for Avisynth 2.5.x
4 * Copyright (C) 2006-2007 Kevin Stone
6 * ColorMatrix 1.x is Copyright (C) Wilbert Dijkhof
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 * License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 * ColorMatrix 2.0 is based on the original ColorMatrix filter by Wilbert
26 * Dijkhof. It adds the ability to convert between any of: Rec.709, FCC,
27 * Rec.601, and SMPTE 240M. It also makes pre and post clipping optional,
28 * adds an option to use scaled or non-scaled coefficients, and more...
36 #include "libavutil/opt.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/avstring.h"
40 #define NS(n) n < 0 ? (int)(n*65536.0-0.5+DBL_EPSILON) : (int)(n*65536.0+0.5)
41 #define CB(n) av_clip_uint8(n)
43 static const double yuv_coeff[4][3][3] = {
44 { { +0.7152, +0.0722, +0.2126 }, // Rec.709 (0)
45 { -0.3850, +0.5000, -0.1150 },
46 { -0.4540, -0.0460, +0.5000 } },
47 { { +0.5900, +0.1100, +0.3000 }, // FCC (1)
48 { -0.3310, +0.5000, -0.1690 },
49 { -0.4210, -0.0790, +0.5000 } },
50 { { +0.5870, +0.1140, +0.2990 }, // Rec.601 (ITU-R BT.470-2/SMPTE 170M) (2)
51 { -0.3313, +0.5000, -0.1687 },
52 { -0.4187, -0.0813, +0.5000 } },
53 { { +0.7010, +0.0870, +0.2120 }, // SMPTE 240M (3)
54 { -0.3840, +0.5000, -0.1160 },
55 { -0.4450, -0.0550, +0.5000 } },
69 int yuv_convert[16][3][3];
71 enum ColorMode source, dest;
76 #define OFFSET(x) offsetof(ColorMatrixContext, x)
77 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
79 static const AVOption colormatrix_options[] = {
80 { "src", "set source color matrix", OFFSET(source), AV_OPT_TYPE_INT, {.i64=COLOR_MODE_NONE}, COLOR_MODE_NONE, COLOR_MODE_COUNT-1, .flags=FLAGS, .unit="color_mode" },
81 { "dst", "set destination color matrix", OFFSET(dest), AV_OPT_TYPE_INT, {.i64=COLOR_MODE_NONE}, COLOR_MODE_NONE, COLOR_MODE_COUNT-1, .flags=FLAGS, .unit="color_mode" },
82 { "bt709", "set BT.709 colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_BT709}, .flags=FLAGS, .unit="color_mode" },
83 { "fcc", "set FCC colorspace ", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_FCC}, .flags=FLAGS, .unit="color_mode" },
84 { "bt601", "set BT.601 colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_BT601}, .flags=FLAGS, .unit="color_mode" },
85 { "smpte240m", "set SMPTE-240M colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_SMPTE240M}, .flags=FLAGS, .unit="color_mode" },
89 AVFILTER_DEFINE_CLASS(colormatrix);
111 static void inverse3x3(double im[3][3], const double m[3][3])
113 double det = ma * (me * mi - mf * mh) - mb * (md * mi - mf * mg) + mc * (md * mh - me * mg);
115 ima = det * (me * mi - mf * mh);
116 imb = det * (mc * mh - mb * mi);
117 imc = det * (mb * mf - mc * me);
118 imd = det * (mf * mg - md * mi);
119 ime = det * (ma * mi - mc * mg);
120 imf = det * (mc * md - ma * mf);
121 img = det * (md * mh - me * mg);
122 imh = det * (mb * mg - ma * mh);
123 imi = det * (ma * me - mb * md);
126 static void solve_coefficients(double cm[3][3], double rgb[3][3], const double yuv[3][3])
129 for (i = 0; i < 3; i++)
130 for (j = 0; j < 3; j++)
131 cm[i][j] = yuv[i][0] * rgb[0][j] + yuv[i][1] * rgb[1][j] + yuv[i][2] * rgb[2][j];
134 static void calc_coefficients(AVFilterContext *ctx)
136 ColorMatrixContext *color = ctx->priv;
137 double rgb_coeffd[4][3][3];
138 double yuv_convertd[16][3][3];
142 for (i = 0; i < 4; i++)
143 inverse3x3(rgb_coeffd[i], yuv_coeff[i]);
144 for (i = 0; i < 4; i++) {
145 for (j = 0; j < 4; j++) {
146 solve_coefficients(yuv_convertd[v], rgb_coeffd[i], yuv_coeff[j]);
147 for (k = 0; k < 3; k++) {
148 color->yuv_convert[v][k][0] = NS(yuv_convertd[v][k][0]);
149 color->yuv_convert[v][k][1] = NS(yuv_convertd[v][k][1]);
150 color->yuv_convert[v][k][2] = NS(yuv_convertd[v][k][2]);
152 if (color->yuv_convert[v][0][0] != 65536 || color->yuv_convert[v][1][0] != 0 ||
153 color->yuv_convert[v][2][0] != 0) {
154 av_log(ctx, AV_LOG_ERROR, "error calculating conversion coefficients\n");
161 static const char *color_modes[] = {"bt709", "fcc", "bt601", "smpte240m"};
163 static av_cold int init(AVFilterContext *ctx, const char *args)
165 ColorMatrixContext *color = ctx->priv;
167 if (color->source == COLOR_MODE_NONE || color->dest == COLOR_MODE_NONE) {
168 av_log(ctx, AV_LOG_ERROR, "Unspecified source or destination color space\n");
169 return AVERROR(EINVAL);
172 if (color->source == color->dest) {
173 av_log(ctx, AV_LOG_ERROR, "Source and destination color space must not be identical\n");
174 return AVERROR(EINVAL);
177 color->mode = color->source * 4 + color->dest;
179 calc_coefficients(ctx);
184 static void process_frame_uyvy422(ColorMatrixContext *color,
185 AVFrame *dst, AVFrame *src)
187 const unsigned char *srcp = src->data[0];
188 const int src_pitch = src->linesize[0];
189 const int height = src->height;
190 const int width = src->width*2;
191 unsigned char *dstp = dst->data[0];
192 const int dst_pitch = dst->linesize[0];
193 const int c2 = color->yuv_convert[color->mode][0][1];
194 const int c3 = color->yuv_convert[color->mode][0][2];
195 const int c4 = color->yuv_convert[color->mode][1][1];
196 const int c5 = color->yuv_convert[color->mode][1][2];
197 const int c6 = color->yuv_convert[color->mode][2][1];
198 const int c7 = color->yuv_convert[color->mode][2][2];
201 for (y = 0; y < height; y++) {
202 for (x = 0; x < width; x += 4) {
203 const int u = srcp[x + 0] - 128;
204 const int v = srcp[x + 2] - 128;
205 const int uvval = c2 * u + c3 * v + 1081344;
206 dstp[x + 0] = CB((c4 * u + c5 * v + 8421376) >> 16);
207 dstp[x + 1] = CB((65536 * (srcp[x + 1] - 16) + uvval) >> 16);
208 dstp[x + 2] = CB((c6 * u + c7 * v + 8421376) >> 16);
209 dstp[x + 3] = CB((65536 * (srcp[x + 3] - 16) + uvval) >> 16);
216 static void process_frame_yuv422p(ColorMatrixContext *color,
217 AVFrame *dst, AVFrame *src)
219 const unsigned char *srcpU = src->data[1];
220 const unsigned char *srcpV = src->data[2];
221 const unsigned char *srcpY = src->data[0];
222 const int src_pitchY = src->linesize[0];
223 const int src_pitchUV = src->linesize[1];
224 const int height = src->height;
225 const int width = src->width;
226 unsigned char *dstpU = dst->data[1];
227 unsigned char *dstpV = dst->data[2];
228 unsigned char *dstpY = dst->data[0];
229 const int dst_pitchY = dst->linesize[0];
230 const int dst_pitchUV = dst->linesize[1];
231 const int c2 = color->yuv_convert[color->mode][0][1];
232 const int c3 = color->yuv_convert[color->mode][0][2];
233 const int c4 = color->yuv_convert[color->mode][1][1];
234 const int c5 = color->yuv_convert[color->mode][1][2];
235 const int c6 = color->yuv_convert[color->mode][2][1];
236 const int c7 = color->yuv_convert[color->mode][2][2];
239 for (y = 0; y < height; y++) {
240 for (x = 0; x < width; x += 2) {
241 const int u = srcpU[x >> 1] - 128;
242 const int v = srcpV[x >> 1] - 128;
243 const int uvval = c2 * u + c3 * v + 1081344;
244 dstpY[x + 0] = CB((65536 * (srcpY[x + 0] - 16) + uvval) >> 16);
245 dstpY[x + 1] = CB((65536 * (srcpY[x + 1] - 16) + uvval) >> 16);
246 dstpU[x >> 1] = CB((c4 * u + c5 * v + 8421376) >> 16);
247 dstpV[x >> 1] = CB((c6 * u + c7 * v + 8421376) >> 16);
251 srcpU += src_pitchUV;
252 srcpV += src_pitchUV;
253 dstpU += dst_pitchUV;
254 dstpV += dst_pitchUV;
258 static void process_frame_yuv420p(ColorMatrixContext *color,
259 AVFrame *dst, AVFrame *src)
261 const unsigned char *srcpU = src->data[1];
262 const unsigned char *srcpV = src->data[2];
263 const unsigned char *srcpY = src->data[0];
264 const unsigned char *srcpN = src->data[0] + src->linesize[0];
265 const int src_pitchY = src->linesize[0];
266 const int src_pitchUV = src->linesize[1];
267 const int height = src->height;
268 const int width = src->width;
269 unsigned char *dstpU = dst->data[1];
270 unsigned char *dstpV = dst->data[2];
271 unsigned char *dstpY = dst->data[0];
272 unsigned char *dstpN = dst->data[0] + dst->linesize[0];
273 const int dst_pitchY = dst->linesize[0];
274 const int dst_pitchUV = dst->linesize[1];
275 const int c2 = color->yuv_convert[color->mode][0][1];
276 const int c3 = color->yuv_convert[color->mode][0][2];
277 const int c4 = color->yuv_convert[color->mode][1][1];
278 const int c5 = color->yuv_convert[color->mode][1][2];
279 const int c6 = color->yuv_convert[color->mode][2][1];
280 const int c7 = color->yuv_convert[color->mode][2][2];
283 for (y = 0; y < height; y += 2) {
284 for (x = 0; x < width; x += 2) {
285 const int u = srcpU[x >> 1] - 128;
286 const int v = srcpV[x >> 1] - 128;
287 const int uvval = c2 * u + c3 * v + 1081344;
288 dstpY[x + 0] = CB((65536 * (srcpY[x + 0] - 16) + uvval) >> 16);
289 dstpY[x + 1] = CB((65536 * (srcpY[x + 1] - 16) + uvval) >> 16);
290 dstpN[x + 0] = CB((65536 * (srcpN[x + 0] - 16) + uvval) >> 16);
291 dstpN[x + 1] = CB((65536 * (srcpN[x + 1] - 16) + uvval) >> 16);
292 dstpU[x >> 1] = CB((c4 * u + c5 * v + 8421376) >> 16);
293 dstpV[x >> 1] = CB((c6 * u + c7 * v + 8421376) >> 16);
295 srcpY += src_pitchY << 1;
296 dstpY += dst_pitchY << 1;
297 srcpN += src_pitchY << 1;
298 dstpN += dst_pitchY << 1;
299 srcpU += src_pitchUV;
300 srcpV += src_pitchUV;
301 dstpU += dst_pitchUV;
302 dstpV += dst_pitchUV;
306 static int config_input(AVFilterLink *inlink)
308 AVFilterContext *ctx = inlink->dst;
309 ColorMatrixContext *color = ctx->priv;
310 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
312 color->hsub = pix_desc->log2_chroma_w;
313 color->vsub = pix_desc->log2_chroma_h;
315 av_log(ctx, AV_LOG_VERBOSE, "%s -> %s\n",
316 color_modes[color->source], color_modes[color->dest]);
321 static int query_formats(AVFilterContext *ctx)
323 static const enum AVPixelFormat pix_fmts[] = {
330 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
335 static int filter_frame(AVFilterLink *link, AVFrame *in)
337 AVFilterContext *ctx = link->dst;
338 ColorMatrixContext *color = ctx->priv;
339 AVFilterLink *outlink = ctx->outputs[0];
342 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
345 return AVERROR(ENOMEM);
347 av_frame_copy_props(out, in);
349 if (in->format == AV_PIX_FMT_YUV422P)
350 process_frame_yuv422p(color, out, in);
351 else if (in->format == AV_PIX_FMT_YUV420P)
352 process_frame_yuv420p(color, out, in);
354 process_frame_uyvy422(color, out, in);
357 return ff_filter_frame(outlink, out);
360 static const AVFilterPad colormatrix_inputs[] = {
363 .type = AVMEDIA_TYPE_VIDEO,
364 .config_props = config_input,
365 .filter_frame = filter_frame,
370 static const AVFilterPad colormatrix_outputs[] = {
373 .type = AVMEDIA_TYPE_VIDEO,
378 static const char *const shorthand[] = { "src", "dst", NULL };
380 AVFilter avfilter_vf_colormatrix = {
381 .name = "colormatrix",
382 .description = NULL_IF_CONFIG_SMALL("Convert color matrix."),
384 .priv_size = sizeof(ColorMatrixContext),
386 .query_formats = query_formats,
387 .inputs = colormatrix_inputs,
388 .outputs = colormatrix_outputs,
389 .priv_class = &colormatrix_class,
390 .shorthand = shorthand,