2 * Misc image convertion routines
3 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Misc image convertion routines.
26 * - write 'ffimg' program to test all the image related stuff
27 * - move all api to slice based system
28 * - integrate deinterlacing, postprocessing and scaling in the conversion process
35 #include "fastmemcpy.h"
42 #define xglue(x, y) x ## y
43 #define glue(x, y) xglue(x, y)
45 #define FF_COLOR_RGB 0 /* RGB color space */
46 #define FF_COLOR_GRAY 1 /* gray color space */
47 #define FF_COLOR_YUV 2 /* YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
48 #define FF_COLOR_YUV_JPEG 3 /* YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
50 #define FF_PIXEL_PLANAR 0 /* each channel has one component in AVPicture */
51 #define FF_PIXEL_PACKED 1 /* only one components containing all the channels */
52 #define FF_PIXEL_PALETTE 2 /* one components containing indexes for a palette */
54 typedef struct PixFmtInfo {
56 uint8_t nb_channels; /* number of channels (including alpha) */
57 uint8_t color_type; /* color type (see FF_COLOR_xxx constants) */
58 uint8_t pixel_type; /* pixel storage type (see FF_PIXEL_xxx constants) */
59 uint8_t is_alpha : 1; /* true if alpha can be specified */
60 uint8_t x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
61 uint8_t y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
62 uint8_t depth; /* bit depth of the color components */
65 /* this table gives more information about formats */
66 static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
71 .color_type = FF_COLOR_YUV,
72 .pixel_type = FF_PIXEL_PLANAR,
74 .x_chroma_shift = 1, .y_chroma_shift = 1,
79 .color_type = FF_COLOR_YUV,
80 .pixel_type = FF_PIXEL_PLANAR,
82 .x_chroma_shift = 1, .y_chroma_shift = 0,
87 .color_type = FF_COLOR_YUV,
88 .pixel_type = FF_PIXEL_PLANAR,
90 .x_chroma_shift = 0, .y_chroma_shift = 0,
95 .color_type = FF_COLOR_YUV,
96 .pixel_type = FF_PIXEL_PACKED,
98 .x_chroma_shift = 1, .y_chroma_shift = 0,
100 [PIX_FMT_UYVY422] = {
103 .color_type = FF_COLOR_YUV,
104 .pixel_type = FF_PIXEL_PACKED,
106 .x_chroma_shift = 1, .y_chroma_shift = 0,
108 [PIX_FMT_YUV410P] = {
111 .color_type = FF_COLOR_YUV,
112 .pixel_type = FF_PIXEL_PLANAR,
114 .x_chroma_shift = 2, .y_chroma_shift = 2,
116 [PIX_FMT_YUV411P] = {
119 .color_type = FF_COLOR_YUV,
120 .pixel_type = FF_PIXEL_PLANAR,
122 .x_chroma_shift = 2, .y_chroma_shift = 0,
126 [PIX_FMT_YUVJ420P] = {
129 .color_type = FF_COLOR_YUV_JPEG,
130 .pixel_type = FF_PIXEL_PLANAR,
132 .x_chroma_shift = 1, .y_chroma_shift = 1,
134 [PIX_FMT_YUVJ422P] = {
137 .color_type = FF_COLOR_YUV_JPEG,
138 .pixel_type = FF_PIXEL_PLANAR,
140 .x_chroma_shift = 1, .y_chroma_shift = 0,
142 [PIX_FMT_YUVJ444P] = {
145 .color_type = FF_COLOR_YUV_JPEG,
146 .pixel_type = FF_PIXEL_PLANAR,
148 .x_chroma_shift = 0, .y_chroma_shift = 0,
155 .color_type = FF_COLOR_RGB,
156 .pixel_type = FF_PIXEL_PACKED,
158 .x_chroma_shift = 0, .y_chroma_shift = 0,
163 .color_type = FF_COLOR_RGB,
164 .pixel_type = FF_PIXEL_PACKED,
166 .x_chroma_shift = 0, .y_chroma_shift = 0,
170 .nb_channels = 4, .is_alpha = 1,
171 .color_type = FF_COLOR_RGB,
172 .pixel_type = FF_PIXEL_PACKED,
174 .x_chroma_shift = 0, .y_chroma_shift = 0,
179 .color_type = FF_COLOR_RGB,
180 .pixel_type = FF_PIXEL_PACKED,
182 .x_chroma_shift = 0, .y_chroma_shift = 0,
186 .nb_channels = 4, .is_alpha = 1,
187 .color_type = FF_COLOR_RGB,
188 .pixel_type = FF_PIXEL_PACKED,
190 .x_chroma_shift = 0, .y_chroma_shift = 0,
193 /* gray / mono formats */
197 .color_type = FF_COLOR_GRAY,
198 .pixel_type = FF_PIXEL_PLANAR,
201 [PIX_FMT_MONOWHITE] = {
204 .color_type = FF_COLOR_GRAY,
205 .pixel_type = FF_PIXEL_PLANAR,
208 [PIX_FMT_MONOBLACK] = {
211 .color_type = FF_COLOR_GRAY,
212 .pixel_type = FF_PIXEL_PLANAR,
216 /* paletted formats */
219 .nb_channels = 4, .is_alpha = 1,
220 .color_type = FF_COLOR_RGB,
221 .pixel_type = FF_PIXEL_PALETTE,
224 [PIX_FMT_XVMC_MPEG2_MC] = {
227 [PIX_FMT_XVMC_MPEG2_IDCT] = {
230 [PIX_FMT_UYVY411] = {
233 .color_type = FF_COLOR_YUV,
234 .pixel_type = FF_PIXEL_PACKED,
236 .x_chroma_shift = 2, .y_chroma_shift = 0,
240 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
242 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
243 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
246 const char *avcodec_get_pix_fmt_name(int pix_fmt)
248 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
251 return pix_fmt_info[pix_fmt].name;
254 enum PixelFormat avcodec_get_pix_fmt(const char* name)
258 for (i=0; i < PIX_FMT_NB; i++)
259 if (!strcmp(pix_fmt_info[i].name, name))
264 /* Picture field are filled with 'ptr' addresses. Also return size */
265 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
266 int pix_fmt, int width, int height)
268 int size, w2, h2, size2;
271 pinfo = &pix_fmt_info[pix_fmt];
272 size = width * height;
274 case PIX_FMT_YUV420P:
275 case PIX_FMT_YUV422P:
276 case PIX_FMT_YUV444P:
277 case PIX_FMT_YUV410P:
278 case PIX_FMT_YUV411P:
279 case PIX_FMT_YUVJ420P:
280 case PIX_FMT_YUVJ422P:
281 case PIX_FMT_YUVJ444P:
282 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
283 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
285 picture->data[0] = ptr;
286 picture->data[1] = picture->data[0] + size;
287 picture->data[2] = picture->data[1] + size2;
288 picture->linesize[0] = width;
289 picture->linesize[1] = w2;
290 picture->linesize[2] = w2;
291 return size + 2 * size2;
294 picture->data[0] = ptr;
295 picture->data[1] = NULL;
296 picture->data[2] = NULL;
297 picture->linesize[0] = width * 3;
300 picture->data[0] = ptr;
301 picture->data[1] = NULL;
302 picture->data[2] = NULL;
303 picture->linesize[0] = width * 4;
308 picture->data[0] = ptr;
309 picture->data[1] = NULL;
310 picture->data[2] = NULL;
311 picture->linesize[0] = width * 2;
313 case PIX_FMT_UYVY422:
314 picture->data[0] = ptr;
315 picture->data[1] = NULL;
316 picture->data[2] = NULL;
317 picture->linesize[0] = width * 2;
319 case PIX_FMT_UYVY411:
320 picture->data[0] = ptr;
321 picture->data[1] = NULL;
322 picture->data[2] = NULL;
323 picture->linesize[0] = width + width/2;
324 return size + size/2;
326 picture->data[0] = ptr;
327 picture->data[1] = NULL;
328 picture->data[2] = NULL;
329 picture->linesize[0] = width;
331 case PIX_FMT_MONOWHITE:
332 case PIX_FMT_MONOBLACK:
333 picture->data[0] = ptr;
334 picture->data[1] = NULL;
335 picture->data[2] = NULL;
336 picture->linesize[0] = (width + 7) >> 3;
337 return picture->linesize[0] * height;
339 size2 = (size + 3) & ~3;
340 picture->data[0] = ptr;
341 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
342 picture->data[2] = NULL;
343 picture->linesize[0] = width;
344 picture->linesize[1] = 4;
345 return size2 + 256 * 4;
347 picture->data[0] = NULL;
348 picture->data[1] = NULL;
349 picture->data[2] = NULL;
350 picture->data[3] = NULL;
355 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
356 unsigned char *dest, int dest_size)
358 PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
359 int i, j, w, h, data_planes;
360 const unsigned char* s;
361 int size = avpicture_get_size(pix_fmt, width, height);
363 if (size > dest_size)
366 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
367 if (pix_fmt == PIX_FMT_YUV422 ||
368 pix_fmt == PIX_FMT_UYVY422 ||
369 pix_fmt == PIX_FMT_RGB565 ||
370 pix_fmt == PIX_FMT_RGB555)
372 else if (pix_fmt == PIX_FMT_UYVY411)
374 else if (pix_fmt == PIX_FMT_PAL8)
377 w = width * (pf->depth * pf->nb_channels / 8);
382 data_planes = pf->nb_channels;
383 w = (width*pf->depth + 7)/8;
387 for (i=0; i<data_planes; i++) {
389 w = width >> pf->x_chroma_shift;
390 h = height >> pf->y_chroma_shift;
396 s += src->linesize[i];
400 if (pf->pixel_type == FF_PIXEL_PALETTE)
401 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
406 int avpicture_get_size(int pix_fmt, int width, int height)
408 AVPicture dummy_pict;
409 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
413 * compute the loss when converting from a pixel format to another
415 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
418 const PixFmtInfo *pf, *ps;
421 ps = &pix_fmt_info[src_pix_fmt];
422 pf = &pix_fmt_info[dst_pix_fmt];
426 pf = &pix_fmt_info[dst_pix_fmt];
427 if (pf->depth < ps->depth ||
428 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
429 loss |= FF_LOSS_DEPTH;
430 if (pf->x_chroma_shift > ps->x_chroma_shift ||
431 pf->y_chroma_shift > ps->y_chroma_shift)
432 loss |= FF_LOSS_RESOLUTION;
433 switch(pf->color_type) {
435 if (ps->color_type != FF_COLOR_RGB &&
436 ps->color_type != FF_COLOR_GRAY)
437 loss |= FF_LOSS_COLORSPACE;
440 if (ps->color_type != FF_COLOR_GRAY)
441 loss |= FF_LOSS_COLORSPACE;
444 if (ps->color_type != FF_COLOR_YUV)
445 loss |= FF_LOSS_COLORSPACE;
447 case FF_COLOR_YUV_JPEG:
448 if (ps->color_type != FF_COLOR_YUV_JPEG &&
449 ps->color_type != FF_COLOR_YUV &&
450 ps->color_type != FF_COLOR_GRAY)
451 loss |= FF_LOSS_COLORSPACE;
455 if (ps->color_type != pf->color_type)
456 loss |= FF_LOSS_COLORSPACE;
459 if (pf->color_type == FF_COLOR_GRAY &&
460 ps->color_type != FF_COLOR_GRAY)
461 loss |= FF_LOSS_CHROMA;
462 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
463 loss |= FF_LOSS_ALPHA;
464 if (pf->pixel_type == FF_PIXEL_PALETTE &&
465 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
466 loss |= FF_LOSS_COLORQUANT;
470 static int avg_bits_per_pixel(int pix_fmt)
473 const PixFmtInfo *pf;
475 pf = &pix_fmt_info[pix_fmt];
476 switch(pf->pixel_type) {
477 case FF_PIXEL_PACKED:
480 case PIX_FMT_UYVY422:
485 case PIX_FMT_UYVY411:
489 bits = pf->depth * pf->nb_channels;
493 case FF_PIXEL_PLANAR:
494 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
495 bits = pf->depth * pf->nb_channels;
497 bits = pf->depth + ((2 * pf->depth) >>
498 (pf->x_chroma_shift + pf->y_chroma_shift));
501 case FF_PIXEL_PALETTE:
511 static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
516 int dist, i, loss, min_dist, dst_pix_fmt;
518 /* find exact color match with smallest size */
520 min_dist = 0x7fffffff;
521 for(i = 0;i < PIX_FMT_NB; i++) {
522 if (pix_fmt_mask & (1 << i)) {
523 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
525 dist = avg_bits_per_pixel(i);
526 if (dist < min_dist) {
537 * find best pixel format to convert to. Return -1 if none found
539 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
540 int has_alpha, int *loss_ptr)
542 int dst_pix_fmt, loss_mask, i;
543 static const int loss_mask_order[] = {
544 ~0, /* no loss first */
547 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
553 /* try with successive loss */
556 loss_mask = loss_mask_order[i++];
557 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
558 has_alpha, loss_mask);
559 if (dst_pix_fmt >= 0)
567 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
571 static void img_copy_plane(uint8_t *dst, int dst_wrap,
572 const uint8_t *src, int src_wrap,
573 int width, int height)
575 for(;height > 0; height--) {
576 memcpy(dst, src, width);
583 * Copy image 'src' to 'dst'.
585 void img_copy(AVPicture *dst, const AVPicture *src,
586 int pix_fmt, int width, int height)
589 PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
591 pf = &pix_fmt_info[pix_fmt];
592 switch(pf->pixel_type) {
593 case FF_PIXEL_PACKED:
596 case PIX_FMT_UYVY422:
601 case PIX_FMT_UYVY411:
605 bits = pf->depth * pf->nb_channels;
608 bwidth = (width * bits + 7) >> 3;
609 img_copy_plane(dst->data[0], dst->linesize[0],
610 src->data[0], src->linesize[0],
613 case FF_PIXEL_PLANAR:
614 for(i = 0; i < pf->nb_channels; i++) {
618 if (i == 1 || i == 2) {
619 w >>= pf->x_chroma_shift;
620 h >>= pf->y_chroma_shift;
622 bwidth = (w * pf->depth + 7) >> 3;
623 img_copy_plane(dst->data[i], dst->linesize[i],
624 src->data[i], src->linesize[i],
628 case FF_PIXEL_PALETTE:
629 img_copy_plane(dst->data[0], dst->linesize[0],
630 src->data[0], src->linesize[0],
632 /* copy the palette */
633 img_copy_plane(dst->data[1], dst->linesize[1],
634 src->data[1], src->linesize[1],
640 /* XXX: totally non optimized */
642 static void yuv422_to_yuv420p(AVPicture *dst, const AVPicture *src,
643 int width, int height)
645 const uint8_t *p, *p1;
646 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
654 for(;height >= 1; height -= 2) {
659 for(w = width; w >= 2; w -= 2) {
676 p1 += src->linesize[0];
677 lum1 += dst->linesize[0];
681 for(w = width; w >= 2; w -= 2) {
690 p1 += src->linesize[0];
691 lum1 += dst->linesize[0];
693 cb1 += dst->linesize[1];
694 cr1 += dst->linesize[2];
698 static void uyvy422_to_yuv420p(AVPicture *dst, const AVPicture *src,
699 int width, int height)
701 const uint8_t *p, *p1;
702 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
711 for(;height >= 1; height -= 2) {
716 for(w = width; w >= 2; w -= 2) {
733 p1 += src->linesize[0];
734 lum1 += dst->linesize[0];
738 for(w = width; w >= 2; w -= 2) {
747 p1 += src->linesize[0];
748 lum1 += dst->linesize[0];
750 cb1 += dst->linesize[1];
751 cr1 += dst->linesize[2];
756 static void uyvy422_to_yuv422p(AVPicture *dst, const AVPicture *src,
757 int width, int height)
759 const uint8_t *p, *p1;
760 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
767 for(;height > 0; height--) {
772 for(w = width; w >= 2; w -= 2) {
782 p1 += src->linesize[0];
783 lum1 += dst->linesize[0];
784 cb1 += dst->linesize[1];
785 cr1 += dst->linesize[2];
790 static void yuv422_to_yuv422p(AVPicture *dst, const AVPicture *src,
791 int width, int height)
793 const uint8_t *p, *p1;
794 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
801 for(;height > 0; height--) {
806 for(w = width; w >= 2; w -= 2) {
816 p1 += src->linesize[0];
817 lum1 += dst->linesize[0];
818 cb1 += dst->linesize[1];
819 cr1 += dst->linesize[2];
823 static void yuv422p_to_yuv422(AVPicture *dst, const AVPicture *src,
824 int width, int height)
827 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
834 for(;height > 0; height--) {
839 for(w = width; w >= 2; w -= 2) {
849 p1 += dst->linesize[0];
850 lum1 += src->linesize[0];
851 cb1 += src->linesize[1];
852 cr1 += src->linesize[2];
856 static void yuv422p_to_uyvy422(AVPicture *dst, const AVPicture *src,
857 int width, int height)
860 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
867 for(;height > 0; height--) {
872 for(w = width; w >= 2; w -= 2) {
882 p1 += dst->linesize[0];
883 lum1 += src->linesize[0];
884 cb1 += src->linesize[1];
885 cr1 += src->linesize[2];
889 static void uyvy411_to_yuv411p(AVPicture *dst, const AVPicture *src,
890 int width, int height)
892 const uint8_t *p, *p1;
893 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
900 for(;height > 0; height--) {
905 for(w = width; w >= 4; w -= 4) {
917 p1 += src->linesize[0];
918 lum1 += dst->linesize[0];
919 cb1 += dst->linesize[1];
920 cr1 += dst->linesize[2];
925 static void yuv420p_to_yuv422(AVPicture *dst, const AVPicture *src,
926 int width, int height)
929 uint8_t *line1, *line2, *linesrc = dst->data[0];
930 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
931 uint8_t *cb1, *cb2 = src->data[1];
932 uint8_t *cr1, *cr2 = src->data[2];
934 for(h = height / 2; h--;) {
936 line2 = linesrc + dst->linesize[0];
939 lum2 = lumsrc + src->linesize[0];
944 for(w = width / 2; w--;) {
945 *line1++ = *lum1++; *line2++ = *lum2++;
946 *line1++ = *line2++ = *cb1++;
947 *line1++ = *lum1++; *line2++ = *lum2++;
948 *line1++ = *line2++ = *cr1++;
951 linesrc += dst->linesize[0] * 2;
952 lumsrc += src->linesize[0] * 2;
953 cb2 += src->linesize[1];
954 cr2 += src->linesize[2];
958 static void yuv420p_to_uyvy422(AVPicture *dst, const AVPicture *src,
959 int width, int height)
962 uint8_t *line1, *line2, *linesrc = dst->data[0];
963 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
964 uint8_t *cb1, *cb2 = src->data[1];
965 uint8_t *cr1, *cr2 = src->data[2];
967 for(h = height / 2; h--;) {
969 line2 = linesrc + dst->linesize[0];
972 lum2 = lumsrc + src->linesize[0];
977 for(w = width / 2; w--;) {
978 *line1++ = *line2++ = *cb1++;
979 *line1++ = *lum1++; *line2++ = *lum2++;
980 *line1++ = *line2++ = *cr1++;
981 *line1++ = *lum1++; *line2++ = *lum2++;
984 linesrc += dst->linesize[0] * 2;
985 lumsrc += src->linesize[0] * 2;
986 cb2 += src->linesize[1];
987 cr2 += src->linesize[2];
992 #define ONE_HALF (1 << (SCALEBITS - 1))
993 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
995 #define YUV_TO_RGB1_CCIR(cb1, cr1)\
999 r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
1000 g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
1002 b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
1005 #define YUV_TO_RGB2_CCIR(r, g, b, y1)\
1007 y = ((y1) - 16) * FIX(255.0/219.0);\
1008 r = cm[(y + r_add) >> SCALEBITS];\
1009 g = cm[(y + g_add) >> SCALEBITS];\
1010 b = cm[(y + b_add) >> SCALEBITS];\
1013 #define YUV_TO_RGB1(cb1, cr1)\
1017 r_add = FIX(1.40200) * cr + ONE_HALF;\
1018 g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
1019 b_add = FIX(1.77200) * cb + ONE_HALF;\
1022 #define YUV_TO_RGB2(r, g, b, y1)\
1024 y = (y1) << SCALEBITS;\
1025 r = cm[(y + r_add) >> SCALEBITS];\
1026 g = cm[(y + g_add) >> SCALEBITS];\
1027 b = cm[(y + b_add) >> SCALEBITS];\
1030 #define Y_CCIR_TO_JPEG(y)\
1031 cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
1033 #define Y_JPEG_TO_CCIR(y)\
1034 (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1036 #define C_CCIR_TO_JPEG(y)\
1037 cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
1039 /* NOTE: the clamp is really necessary! */
1040 static inline int C_JPEG_TO_CCIR(int y) {
1041 y = (((y - 128) * FIX(112.0/127.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS);
1048 #define RGB_TO_Y(r, g, b) \
1049 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
1050 FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
1052 #define RGB_TO_U(r1, g1, b1, shift)\
1053 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
1054 FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1056 #define RGB_TO_V(r1, g1, b1, shift)\
1057 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
1058 FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1060 #define RGB_TO_Y_CCIR(r, g, b) \
1061 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
1062 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1064 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
1065 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
1066 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1068 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
1069 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
1070 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1072 static uint8_t y_ccir_to_jpeg[256];
1073 static uint8_t y_jpeg_to_ccir[256];
1074 static uint8_t c_ccir_to_jpeg[256];
1075 static uint8_t c_jpeg_to_ccir[256];
1077 /* init various conversion tables */
1078 static void img_convert_init(void)
1081 uint8_t *cm = cropTbl + MAX_NEG_CROP;
1083 for(i = 0;i < 256; i++) {
1084 y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
1085 y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
1086 c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
1087 c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
1091 /* apply to each pixel the given table */
1092 static void img_apply_table(uint8_t *dst, int dst_wrap,
1093 const uint8_t *src, int src_wrap,
1094 int width, int height, const uint8_t *table1)
1099 const uint8_t *table;
1102 for(;height > 0; height--) {
1126 /* XXX: use generic filter ? */
1127 /* XXX: in most cases, the sampling position is incorrect */
1130 static void shrink41(uint8_t *dst, int dst_wrap,
1131 const uint8_t *src, int src_wrap,
1132 int width, int height)
1138 for(;height > 0; height--) {
1141 for(w = width;w > 0; w--) {
1142 d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
1152 static void shrink21(uint8_t *dst, int dst_wrap,
1153 const uint8_t *src, int src_wrap,
1154 int width, int height)
1160 for(;height > 0; height--) {
1163 for(w = width;w > 0; w--) {
1164 d[0] = (s[0] + s[1]) >> 1;
1174 static void shrink12(uint8_t *dst, int dst_wrap,
1175 const uint8_t *src, int src_wrap,
1176 int width, int height)
1180 const uint8_t *s1, *s2;
1182 for(;height > 0; height--) {
1186 for(w = width;w >= 4; w-=4) {
1187 d[0] = (s1[0] + s2[0]) >> 1;
1188 d[1] = (s1[1] + s2[1]) >> 1;
1189 d[2] = (s1[2] + s2[2]) >> 1;
1190 d[3] = (s1[3] + s2[3]) >> 1;
1196 d[0] = (s1[0] + s2[0]) >> 1;
1201 src += 2 * src_wrap;
1207 static void shrink22(uint8_t *dst, int dst_wrap,
1208 const uint8_t *src, int src_wrap,
1209 int width, int height)
1212 const uint8_t *s1, *s2;
1215 for(;height > 0; height--) {
1219 for(w = width;w >= 4; w-=4) {
1220 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1221 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1222 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1223 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1229 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1234 src += 2 * src_wrap;
1240 static void shrink44(uint8_t *dst, int dst_wrap,
1241 const uint8_t *src, int src_wrap,
1242 int width, int height)
1245 const uint8_t *s1, *s2, *s3, *s4;
1248 for(;height > 0; height--) {
1254 for(w = width;w > 0; w--) {
1255 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1256 s2[0] + s2[1] + s2[2] + s2[3] +
1257 s3[0] + s3[1] + s3[2] + s3[3] +
1258 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1265 src += 4 * src_wrap;
1270 static void grow21_line(uint8_t *dst, const uint8_t *src,
1279 for(w = width;w >= 4; w-=4) {
1280 d[1] = d[0] = s1[0];
1281 d[3] = d[2] = s1[1];
1285 for(;w >= 2; w -= 2) {
1286 d[1] = d[0] = s1[0];
1290 /* only needed if width is not a multiple of two */
1291 /* XXX: veryfy that */
1297 static void grow41_line(uint8_t *dst, const uint8_t *src,
1306 for(w = width;w >= 4; w-=4) {
1318 static void grow21(uint8_t *dst, int dst_wrap,
1319 const uint8_t *src, int src_wrap,
1320 int width, int height)
1322 for(;height > 0; height--) {
1323 grow21_line(dst, src, width);
1330 static void grow22(uint8_t *dst, int dst_wrap,
1331 const uint8_t *src, int src_wrap,
1332 int width, int height)
1334 for(;height > 0; height--) {
1335 grow21_line(dst, src, width);
1343 static void grow41(uint8_t *dst, int dst_wrap,
1344 const uint8_t *src, int src_wrap,
1345 int width, int height)
1347 for(;height > 0; height--) {
1348 grow41_line(dst, src, width);
1355 static void grow44(uint8_t *dst, int dst_wrap,
1356 const uint8_t *src, int src_wrap,
1357 int width, int height)
1359 for(;height > 0; height--) {
1360 grow41_line(dst, src, width);
1361 if ((height & 3) == 1)
1368 static void conv411(uint8_t *dst, int dst_wrap,
1369 const uint8_t *src, int src_wrap,
1370 int width, int height)
1373 const uint8_t *s1, *s2;
1378 for(;height > 0; height--) {
1380 s2 = src + src_wrap;
1382 for(w = width;w > 0; w--) {
1383 c = (s1[0] + s2[0]) >> 1;
1390 src += src_wrap * 2;
1395 /* XXX: add jpeg quantize code */
1397 #define TRANSP_INDEX (6*6*6)
1399 /* this is maybe slow, but allows for extensions */
1400 static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
1402 return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
1405 static void build_rgb_palette(uint8_t *palette, int has_alpha)
1408 static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
1411 pal = (uint32_t *)palette;
1413 for(r = 0; r < 6; r++) {
1414 for(g = 0; g < 6; g++) {
1415 for(b = 0; b < 6; b++) {
1416 pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
1417 (pal_value[g] << 8) | pal_value[b];
1424 pal[i++] = 0xff000000;
1427 /* copy bit n to bits 0 ... n - 1 */
1428 static inline unsigned int bitcopy_n(unsigned int a, int n)
1431 mask = (1 << n) - 1;
1432 return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
1435 /* rgb555 handling */
1437 #define RGB_NAME rgb555
1439 #define RGB_IN(r, g, b, s)\
1441 unsigned int v = ((const uint16_t *)(s))[0];\
1442 r = bitcopy_n(v >> (10 - 3), 3);\
1443 g = bitcopy_n(v >> (5 - 3), 3);\
1444 b = bitcopy_n(v << 3, 3);\
1447 #define RGBA_IN(r, g, b, a, s)\
1449 unsigned int v = ((const uint16_t *)(s))[0];\
1450 r = bitcopy_n(v >> (10 - 3), 3);\
1451 g = bitcopy_n(v >> (5 - 3), 3);\
1452 b = bitcopy_n(v << 3, 3);\
1453 a = (-(v >> 15)) & 0xff;\
1456 #define RGBA_OUT(d, r, g, b, a)\
1458 ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | \
1459 ((a << 8) & 0x8000);\
1464 #include "imgconvert_template.h"
1466 /* rgb565 handling */
1468 #define RGB_NAME rgb565
1470 #define RGB_IN(r, g, b, s)\
1472 unsigned int v = ((const uint16_t *)(s))[0];\
1473 r = bitcopy_n(v >> (11 - 3), 3);\
1474 g = bitcopy_n(v >> (5 - 2), 2);\
1475 b = bitcopy_n(v << 3, 3);\
1478 #define RGB_OUT(d, r, g, b)\
1480 ((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
1485 #include "imgconvert_template.h"
1487 /* bgr24 handling */
1489 #define RGB_NAME bgr24
1491 #define RGB_IN(r, g, b, s)\
1498 #define RGB_OUT(d, r, g, b)\
1507 #include "imgconvert_template.h"
1513 /* rgb24 handling */
1515 #define RGB_NAME rgb24
1518 #define RGB_IN(r, g, b, s)\
1525 #define RGB_OUT(d, r, g, b)\
1534 #include "imgconvert_template.h"
1536 /* rgba32 handling */
1538 #define RGB_NAME rgba32
1541 #define RGB_IN(r, g, b, s)\
1543 unsigned int v = ((const uint32_t *)(s))[0];\
1544 r = (v >> 16) & 0xff;\
1545 g = (v >> 8) & 0xff;\
1549 #define RGBA_IN(r, g, b, a, s)\
1551 unsigned int v = ((const uint32_t *)(s))[0];\
1552 a = (v >> 24) & 0xff;\
1553 r = (v >> 16) & 0xff;\
1554 g = (v >> 8) & 0xff;\
1558 #define RGBA_OUT(d, r, g, b, a)\
1560 ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
1565 #include "imgconvert_template.h"
1567 static void mono_to_gray(AVPicture *dst, const AVPicture *src,
1568 int width, int height, int xor_mask)
1570 const unsigned char *p;
1572 int v, dst_wrap, src_wrap;
1576 src_wrap = src->linesize[0] - ((width + 7) >> 3);
1579 dst_wrap = dst->linesize[0] - width;
1580 for(y=0;y<height;y++) {
1583 v = *p++ ^ xor_mask;
1585 q[1] = -((v >> 6) & 1);
1586 q[2] = -((v >> 5) & 1);
1587 q[3] = -((v >> 4) & 1);
1588 q[4] = -((v >> 3) & 1);
1589 q[5] = -((v >> 2) & 1);
1590 q[6] = -((v >> 1) & 1);
1591 q[7] = -((v >> 0) & 1);
1596 v = *p++ ^ xor_mask;
1598 q[0] = -((v >> 7) & 1);
1608 static void monowhite_to_gray(AVPicture *dst, const AVPicture *src,
1609 int width, int height)
1611 mono_to_gray(dst, src, width, height, 0xff);
1614 static void monoblack_to_gray(AVPicture *dst, const AVPicture *src,
1615 int width, int height)
1617 mono_to_gray(dst, src, width, height, 0x00);
1620 static void gray_to_mono(AVPicture *dst, const AVPicture *src,
1621 int width, int height, int xor_mask)
1626 int j, b, v, n1, src_wrap, dst_wrap, y;
1629 src_wrap = src->linesize[0] - width;
1632 dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
1634 for(y=0;y<height;y++) {
1641 v = (v << 1) | (b >> 7);
1643 d[0] = v ^ xor_mask;
1653 v = (v << 1) | (b >> 7);
1656 d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
1664 static void gray_to_monowhite(AVPicture *dst, const AVPicture *src,
1665 int width, int height)
1667 gray_to_mono(dst, src, width, height, 0xff);
1670 static void gray_to_monoblack(AVPicture *dst, const AVPicture *src,
1671 int width, int height)
1673 gray_to_mono(dst, src, width, height, 0x00);
1676 typedef struct ConvertEntry {
1677 void (*convert)(AVPicture *dst,
1678 const AVPicture *src, int width, int height);
1681 /* Add each new convertion function in this table. In order to be able
1682 to convert from any format to any format, the following constraints
1685 - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
1687 - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
1689 - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGBA32
1691 - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
1694 - PIX_FMT_422 must convert to and from PIX_FMT_422P.
1696 The other conversion functions are just optimisations for common cases.
1698 static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
1699 [PIX_FMT_YUV420P] = {
1700 [PIX_FMT_YUV422] = {
1701 .convert = yuv420p_to_yuv422,
1703 [PIX_FMT_RGB555] = {
1704 .convert = yuv420p_to_rgb555
1706 [PIX_FMT_RGB565] = {
1707 .convert = yuv420p_to_rgb565
1710 .convert = yuv420p_to_bgr24
1713 .convert = yuv420p_to_rgb24
1715 [PIX_FMT_RGBA32] = {
1716 .convert = yuv420p_to_rgba32
1718 [PIX_FMT_UYVY422] = {
1719 .convert = yuv420p_to_uyvy422,
1722 [PIX_FMT_YUV422P] = {
1723 [PIX_FMT_YUV422] = {
1724 .convert = yuv422p_to_yuv422,
1726 [PIX_FMT_UYVY422] = {
1727 .convert = yuv422p_to_uyvy422,
1730 [PIX_FMT_YUV444P] = {
1732 .convert = yuv444p_to_rgb24
1735 [PIX_FMT_YUVJ420P] = {
1736 [PIX_FMT_RGB555] = {
1737 .convert = yuvj420p_to_rgb555
1739 [PIX_FMT_RGB565] = {
1740 .convert = yuvj420p_to_rgb565
1743 .convert = yuvj420p_to_bgr24
1746 .convert = yuvj420p_to_rgb24
1748 [PIX_FMT_RGBA32] = {
1749 .convert = yuvj420p_to_rgba32
1752 [PIX_FMT_YUVJ444P] = {
1754 .convert = yuvj444p_to_rgb24
1757 [PIX_FMT_YUV422] = {
1758 [PIX_FMT_YUV420P] = {
1759 .convert = yuv422_to_yuv420p,
1761 [PIX_FMT_YUV422P] = {
1762 .convert = yuv422_to_yuv422p,
1765 [PIX_FMT_UYVY422] = {
1766 [PIX_FMT_YUV420P] = {
1767 .convert = uyvy422_to_yuv420p,
1769 [PIX_FMT_YUV422P] = {
1770 .convert = uyvy422_to_yuv422p,
1774 [PIX_FMT_YUV420P] = {
1775 .convert = rgb24_to_yuv420p
1777 [PIX_FMT_RGB565] = {
1778 .convert = rgb24_to_rgb565
1780 [PIX_FMT_RGB555] = {
1781 .convert = rgb24_to_rgb555
1783 [PIX_FMT_RGBA32] = {
1784 .convert = rgb24_to_rgba32
1787 .convert = rgb24_to_bgr24
1790 .convert = rgb24_to_gray
1793 .convert = rgb24_to_pal8
1795 [PIX_FMT_YUV444P] = {
1796 .convert = rgb24_to_yuv444p
1798 [PIX_FMT_YUVJ420P] = {
1799 .convert = rgb24_to_yuvj420p
1801 [PIX_FMT_YUVJ444P] = {
1802 .convert = rgb24_to_yuvj444p
1805 [PIX_FMT_RGBA32] = {
1807 .convert = rgba32_to_rgb24
1809 [PIX_FMT_RGB555] = {
1810 .convert = rgba32_to_rgb555
1813 .convert = rgba32_to_pal8
1815 [PIX_FMT_YUV420P] = {
1816 .convert = rgba32_to_yuv420p
1819 .convert = rgba32_to_gray
1824 .convert = bgr24_to_rgb24
1826 [PIX_FMT_YUV420P] = {
1827 .convert = bgr24_to_yuv420p
1830 .convert = bgr24_to_gray
1833 [PIX_FMT_RGB555] = {
1835 .convert = rgb555_to_rgb24
1837 [PIX_FMT_RGBA32] = {
1838 .convert = rgb555_to_rgba32
1840 [PIX_FMT_YUV420P] = {
1841 .convert = rgb555_to_yuv420p
1844 .convert = rgb555_to_gray
1847 [PIX_FMT_RGB565] = {
1849 .convert = rgb565_to_rgb24
1851 [PIX_FMT_YUV420P] = {
1852 .convert = rgb565_to_yuv420p
1855 .convert = rgb565_to_gray
1859 [PIX_FMT_RGB555] = {
1860 .convert = gray_to_rgb555
1862 [PIX_FMT_RGB565] = {
1863 .convert = gray_to_rgb565
1866 .convert = gray_to_rgb24
1869 .convert = gray_to_bgr24
1871 [PIX_FMT_RGBA32] = {
1872 .convert = gray_to_rgba32
1874 [PIX_FMT_MONOWHITE] = {
1875 .convert = gray_to_monowhite
1877 [PIX_FMT_MONOBLACK] = {
1878 .convert = gray_to_monoblack
1881 [PIX_FMT_MONOWHITE] = {
1883 .convert = monowhite_to_gray
1886 [PIX_FMT_MONOBLACK] = {
1888 .convert = monoblack_to_gray
1892 [PIX_FMT_RGB555] = {
1893 .convert = pal8_to_rgb555
1895 [PIX_FMT_RGB565] = {
1896 .convert = pal8_to_rgb565
1899 .convert = pal8_to_bgr24
1902 .convert = pal8_to_rgb24
1904 [PIX_FMT_RGBA32] = {
1905 .convert = pal8_to_rgba32
1908 [PIX_FMT_UYVY411] = {
1909 [PIX_FMT_YUV411P] = {
1910 .convert = uyvy411_to_yuv411p,
1916 int avpicture_alloc(AVPicture *picture,
1917 int pix_fmt, int width, int height)
1922 size = avpicture_get_size(pix_fmt, width, height);
1923 ptr = av_malloc(size);
1926 avpicture_fill(picture, ptr, pix_fmt, width, height);
1929 memset(picture, 0, sizeof(AVPicture));
1933 void avpicture_free(AVPicture *picture)
1935 av_free(picture->data[0]);
1938 /* return true if yuv planar */
1939 static inline int is_yuv_planar(PixFmtInfo *ps)
1941 return (ps->color_type == FF_COLOR_YUV ||
1942 ps->color_type == FF_COLOR_YUV_JPEG) &&
1943 ps->pixel_type == FF_PIXEL_PLANAR;
1946 /* XXX: always use linesize. Return -1 if not supported */
1947 int img_convert(AVPicture *dst, int dst_pix_fmt,
1948 const AVPicture *src, int src_pix_fmt,
1949 int src_width, int src_height)
1952 int i, ret, dst_width, dst_height, int_pix_fmt;
1953 PixFmtInfo *src_pix, *dst_pix;
1955 AVPicture tmp1, *tmp = &tmp1;
1957 if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
1958 dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
1960 if (src_width <= 0 || src_height <= 0)
1968 dst_width = src_width;
1969 dst_height = src_height;
1971 dst_pix = &pix_fmt_info[dst_pix_fmt];
1972 src_pix = &pix_fmt_info[src_pix_fmt];
1973 if (src_pix_fmt == dst_pix_fmt) {
1974 /* no conversion needed: just copy */
1975 img_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
1979 ce = &convert_table[src_pix_fmt][dst_pix_fmt];
1981 /* specific conversion routine */
1982 ce->convert(dst, src, dst_width, dst_height);
1987 if (is_yuv_planar(dst_pix) &&
1988 src_pix_fmt == PIX_FMT_GRAY8) {
1992 if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
1993 img_copy_plane(dst->data[0], dst->linesize[0],
1994 src->data[0], src->linesize[0],
1995 dst_width, dst_height);
1997 img_apply_table(dst->data[0], dst->linesize[0],
1998 src->data[0], src->linesize[0],
1999 dst_width, dst_height,
2002 /* fill U and V with 128 */
2005 w >>= dst_pix->x_chroma_shift;
2006 h >>= dst_pix->y_chroma_shift;
2007 for(i = 1; i <= 2; i++) {
2009 for(y = 0; y< h; y++) {
2011 d += dst->linesize[i];
2018 if (is_yuv_planar(src_pix) &&
2019 dst_pix_fmt == PIX_FMT_GRAY8) {
2020 if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
2021 img_copy_plane(dst->data[0], dst->linesize[0],
2022 src->data[0], src->linesize[0],
2023 dst_width, dst_height);
2025 img_apply_table(dst->data[0], dst->linesize[0],
2026 src->data[0], src->linesize[0],
2027 dst_width, dst_height,
2033 /* YUV to YUV planar */
2034 if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
2035 int x_shift, y_shift, w, h, xy_shift;
2036 void (*resize_func)(uint8_t *dst, int dst_wrap,
2037 const uint8_t *src, int src_wrap,
2038 int width, int height);
2040 /* compute chroma size of the smallest dimensions */
2043 if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
2044 w >>= dst_pix->x_chroma_shift;
2046 w >>= src_pix->x_chroma_shift;
2047 if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
2048 h >>= dst_pix->y_chroma_shift;
2050 h >>= src_pix->y_chroma_shift;
2052 x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
2053 y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
2054 xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
2055 /* there must be filters for conversion at least from and to
2059 resize_func = img_copy_plane;
2062 resize_func = shrink21;
2065 resize_func = shrink41;
2068 resize_func = shrink12;
2071 resize_func = shrink22;
2074 resize_func = shrink44;
2077 resize_func = grow21;
2080 resize_func = grow41;
2083 resize_func = grow22;
2086 resize_func = grow44;
2089 resize_func = conv411;
2092 /* currently not handled */
2093 goto no_chroma_filter;
2096 img_copy_plane(dst->data[0], dst->linesize[0],
2097 src->data[0], src->linesize[0],
2098 dst_width, dst_height);
2100 for(i = 1;i <= 2; i++)
2101 resize_func(dst->data[i], dst->linesize[i],
2102 src->data[i], src->linesize[i],
2103 dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
2104 /* if yuv color space conversion is needed, we do it here on
2105 the destination image */
2106 if (dst_pix->color_type != src_pix->color_type) {
2107 const uint8_t *y_table, *c_table;
2108 if (dst_pix->color_type == FF_COLOR_YUV) {
2109 y_table = y_jpeg_to_ccir;
2110 c_table = c_jpeg_to_ccir;
2112 y_table = y_ccir_to_jpeg;
2113 c_table = c_ccir_to_jpeg;
2115 img_apply_table(dst->data[0], dst->linesize[0],
2116 dst->data[0], dst->linesize[0],
2117 dst_width, dst_height,
2120 for(i = 1;i <= 2; i++)
2121 img_apply_table(dst->data[i], dst->linesize[i],
2122 dst->data[i], dst->linesize[i],
2123 dst_width>>dst_pix->x_chroma_shift,
2124 dst_height>>dst_pix->y_chroma_shift,
2131 /* try to use an intermediate format */
2132 if (src_pix_fmt == PIX_FMT_YUV422 ||
2133 dst_pix_fmt == PIX_FMT_YUV422) {
2134 /* specific case: convert to YUV422P first */
2135 int_pix_fmt = PIX_FMT_YUV422P;
2136 } else if (src_pix_fmt == PIX_FMT_UYVY422 ||
2137 dst_pix_fmt == PIX_FMT_UYVY422) {
2138 /* specific case: convert to YUV422P first */
2139 int_pix_fmt = PIX_FMT_YUV422P;
2140 } else if (src_pix_fmt == PIX_FMT_UYVY411 ||
2141 dst_pix_fmt == PIX_FMT_UYVY411) {
2142 /* specific case: convert to YUV411P first */
2143 int_pix_fmt = PIX_FMT_YUV411P;
2144 } else if ((src_pix->color_type == FF_COLOR_GRAY &&
2145 src_pix_fmt != PIX_FMT_GRAY8) ||
2146 (dst_pix->color_type == FF_COLOR_GRAY &&
2147 dst_pix_fmt != PIX_FMT_GRAY8)) {
2148 /* gray8 is the normalized format */
2149 int_pix_fmt = PIX_FMT_GRAY8;
2150 } else if ((is_yuv_planar(src_pix) &&
2151 src_pix_fmt != PIX_FMT_YUV444P &&
2152 src_pix_fmt != PIX_FMT_YUVJ444P)) {
2153 /* yuv444 is the normalized format */
2154 if (src_pix->color_type == FF_COLOR_YUV_JPEG)
2155 int_pix_fmt = PIX_FMT_YUVJ444P;
2157 int_pix_fmt = PIX_FMT_YUV444P;
2158 } else if ((is_yuv_planar(dst_pix) &&
2159 dst_pix_fmt != PIX_FMT_YUV444P &&
2160 dst_pix_fmt != PIX_FMT_YUVJ444P)) {
2161 /* yuv444 is the normalized format */
2162 if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
2163 int_pix_fmt = PIX_FMT_YUVJ444P;
2165 int_pix_fmt = PIX_FMT_YUV444P;
2167 /* the two formats are rgb or gray8 or yuv[j]444p */
2168 if (src_pix->is_alpha && dst_pix->is_alpha)
2169 int_pix_fmt = PIX_FMT_RGBA32;
2171 int_pix_fmt = PIX_FMT_RGB24;
2173 if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
2176 if (img_convert(tmp, int_pix_fmt,
2177 src, src_pix_fmt, src_width, src_height) < 0)
2179 if (img_convert(dst, dst_pix_fmt,
2180 tmp, int_pix_fmt, dst_width, dst_height) < 0)
2184 avpicture_free(tmp);
2188 /* NOTE: we scan all the pixels to have an exact information */
2189 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
2191 const unsigned char *p;
2192 int src_wrap, ret, x, y;
2194 uint32_t *palette = (uint32_t *)src->data[1];
2197 src_wrap = src->linesize[0] - width;
2199 for(y=0;y<height;y++) {
2200 for(x=0;x<width;x++) {
2201 a = palette[p[0]] >> 24;
2203 ret |= FF_ALPHA_TRANSP;
2204 } else if (a != 0xff) {
2205 ret |= FF_ALPHA_SEMI_TRANSP;
2215 * Tell if an image really has transparent alpha values.
2216 * @return ored mask of FF_ALPHA_xxx constants
2218 int img_get_alpha_info(const AVPicture *src,
2219 int pix_fmt, int width, int height)
2221 PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
2224 pf = &pix_fmt_info[pix_fmt];
2225 /* no alpha can be represented in format */
2229 case PIX_FMT_RGBA32:
2230 ret = get_alpha_info_rgba32(src, width, height);
2232 case PIX_FMT_RGB555:
2233 ret = get_alpha_info_rgb555(src, width, height);
2236 ret = get_alpha_info_pal8(src, width, height);
2239 /* we do not know, so everything is indicated */
2240 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
2247 #define DEINT_INPLACE_LINE_LUM \
2248 movd_m2r(lum_m4[0],mm0);\
2249 movd_m2r(lum_m3[0],mm1);\
2250 movd_m2r(lum_m2[0],mm2);\
2251 movd_m2r(lum_m1[0],mm3);\
2252 movd_m2r(lum[0],mm4);\
2253 punpcklbw_r2r(mm7,mm0);\
2254 movd_r2m(mm2,lum_m4[0]);\
2255 punpcklbw_r2r(mm7,mm1);\
2256 punpcklbw_r2r(mm7,mm2);\
2257 punpcklbw_r2r(mm7,mm3);\
2258 punpcklbw_r2r(mm7,mm4);\
2259 paddw_r2r(mm3,mm1);\
2261 paddw_r2r(mm4,mm0);\
2263 paddw_r2r(mm6,mm2);\
2264 paddw_r2r(mm2,mm1);\
2265 psubusw_r2r(mm0,mm1);\
2267 packuswb_r2r(mm7,mm1);\
2268 movd_r2m(mm1,lum_m2[0]);
2270 #define DEINT_LINE_LUM \
2271 movd_m2r(lum_m4[0],mm0);\
2272 movd_m2r(lum_m3[0],mm1);\
2273 movd_m2r(lum_m2[0],mm2);\
2274 movd_m2r(lum_m1[0],mm3);\
2275 movd_m2r(lum[0],mm4);\
2276 punpcklbw_r2r(mm7,mm0);\
2277 punpcklbw_r2r(mm7,mm1);\
2278 punpcklbw_r2r(mm7,mm2);\
2279 punpcklbw_r2r(mm7,mm3);\
2280 punpcklbw_r2r(mm7,mm4);\
2281 paddw_r2r(mm3,mm1);\
2283 paddw_r2r(mm4,mm0);\
2285 paddw_r2r(mm6,mm2);\
2286 paddw_r2r(mm2,mm1);\
2287 psubusw_r2r(mm0,mm1);\
2289 packuswb_r2r(mm7,mm1);\
2290 movd_r2m(mm1,dst[0]);
2293 /* filter parameters: [-1 4 2 4 -1] // 8 */
2294 static void deinterlace_line(uint8_t *dst,
2295 const uint8_t *lum_m4, const uint8_t *lum_m3,
2296 const uint8_t *lum_m2, const uint8_t *lum_m1,
2301 uint8_t *cm = cropTbl + MAX_NEG_CROP;
2304 for(;size > 0;size--) {
2306 sum += lum_m3[0] << 2;
2307 sum += lum_m2[0] << 1;
2308 sum += lum_m1[0] << 2;
2310 dst[0] = cm[(sum + 4) >> 3];
2327 movq_m2r(rounder,mm6);
2329 for (;size > 3; size-=4) {
2340 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
2344 uint8_t *cm = cropTbl + MAX_NEG_CROP;
2347 for(;size > 0;size--) {
2349 sum += lum_m3[0] << 2;
2350 sum += lum_m2[0] << 1;
2351 lum_m4[0]=lum_m2[0];
2352 sum += lum_m1[0] << 2;
2354 lum_m2[0] = cm[(sum + 4) >> 3];
2370 movq_m2r(rounder,mm6);
2372 for (;size > 3; size-=4) {
2373 DEINT_INPLACE_LINE_LUM
2383 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
2384 top field is copied as is, but the bottom field is deinterlaced
2385 against the top field. */
2386 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
2387 const uint8_t *src1, int src_wrap,
2388 int width, int height)
2390 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
2395 src_0=&src_m1[src_wrap];
2396 src_p1=&src_0[src_wrap];
2397 src_p2=&src_p1[src_wrap];
2398 for(y=0;y<(height-2);y+=2) {
2399 memcpy(dst,src_m1,width);
2401 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
2405 src_p1 += 2*src_wrap;
2406 src_p2 += 2*src_wrap;
2409 memcpy(dst,src_m1,width);
2412 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
2415 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
2416 int width, int height)
2418 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
2421 buf = (uint8_t*)av_malloc(width);
2424 memcpy(buf,src_m1,width);
2425 src_0=&src_m1[src_wrap];
2426 src_p1=&src_0[src_wrap];
2427 src_p2=&src_p1[src_wrap];
2428 for(y=0;y<(height-2);y+=2) {
2429 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
2432 src_p1 += 2*src_wrap;
2433 src_p2 += 2*src_wrap;
2436 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
2441 /* deinterlace - if not supported return -1 */
2442 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2443 int pix_fmt, int width, int height)
2447 if (pix_fmt != PIX_FMT_YUV420P &&
2448 pix_fmt != PIX_FMT_YUV422P &&
2449 pix_fmt != PIX_FMT_YUV444P &&
2450 pix_fmt != PIX_FMT_YUV411P)
2452 if ((width & 3) != 0 || (height & 3) != 0)
2458 case PIX_FMT_YUV420P:
2462 case PIX_FMT_YUV422P:
2465 case PIX_FMT_YUV411P:
2473 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
2476 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
2477 src->data[i], src->linesize[i],