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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 const 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;
269 const PixFmtInfo *pinfo;
271 if(avcodec_check_dimensions(NULL, width, height))
274 pinfo = &pix_fmt_info[pix_fmt];
275 size = width * height;
277 case PIX_FMT_YUV420P:
278 case PIX_FMT_YUV422P:
279 case PIX_FMT_YUV444P:
280 case PIX_FMT_YUV410P:
281 case PIX_FMT_YUV411P:
282 case PIX_FMT_YUVJ420P:
283 case PIX_FMT_YUVJ422P:
284 case PIX_FMT_YUVJ444P:
285 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
286 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
288 picture->data[0] = ptr;
289 picture->data[1] = picture->data[0] + size;
290 picture->data[2] = picture->data[1] + size2;
291 picture->linesize[0] = width;
292 picture->linesize[1] = w2;
293 picture->linesize[2] = w2;
294 return size + 2 * size2;
297 picture->data[0] = ptr;
298 picture->data[1] = NULL;
299 picture->data[2] = NULL;
300 picture->linesize[0] = width * 3;
303 picture->data[0] = ptr;
304 picture->data[1] = NULL;
305 picture->data[2] = NULL;
306 picture->linesize[0] = width * 4;
311 picture->data[0] = ptr;
312 picture->data[1] = NULL;
313 picture->data[2] = NULL;
314 picture->linesize[0] = width * 2;
316 case PIX_FMT_UYVY422:
317 picture->data[0] = ptr;
318 picture->data[1] = NULL;
319 picture->data[2] = NULL;
320 picture->linesize[0] = width * 2;
322 case PIX_FMT_UYVY411:
323 picture->data[0] = ptr;
324 picture->data[1] = NULL;
325 picture->data[2] = NULL;
326 picture->linesize[0] = width + width/2;
327 return size + size/2;
329 picture->data[0] = ptr;
330 picture->data[1] = NULL;
331 picture->data[2] = NULL;
332 picture->linesize[0] = width;
334 case PIX_FMT_MONOWHITE:
335 case PIX_FMT_MONOBLACK:
336 picture->data[0] = ptr;
337 picture->data[1] = NULL;
338 picture->data[2] = NULL;
339 picture->linesize[0] = (width + 7) >> 3;
340 return picture->linesize[0] * height;
342 size2 = (size + 3) & ~3;
343 picture->data[0] = ptr;
344 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
345 picture->data[2] = NULL;
346 picture->linesize[0] = width;
347 picture->linesize[1] = 4;
348 return size2 + 256 * 4;
351 picture->data[0] = NULL;
352 picture->data[1] = NULL;
353 picture->data[2] = NULL;
354 picture->data[3] = NULL;
359 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
360 unsigned char *dest, int dest_size)
362 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
363 int i, j, w, h, data_planes;
364 const unsigned char* s;
365 int size = avpicture_get_size(pix_fmt, width, height);
367 if (size > dest_size || size < 0)
370 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
371 if (pix_fmt == PIX_FMT_YUV422 ||
372 pix_fmt == PIX_FMT_UYVY422 ||
373 pix_fmt == PIX_FMT_RGB565 ||
374 pix_fmt == PIX_FMT_RGB555)
376 else if (pix_fmt == PIX_FMT_UYVY411)
378 else if (pix_fmt == PIX_FMT_PAL8)
381 w = width * (pf->depth * pf->nb_channels / 8);
386 data_planes = pf->nb_channels;
387 w = (width*pf->depth + 7)/8;
391 for (i=0; i<data_planes; i++) {
393 w = width >> pf->x_chroma_shift;
394 h = height >> pf->y_chroma_shift;
400 s += src->linesize[i];
404 if (pf->pixel_type == FF_PIXEL_PALETTE)
405 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
410 int avpicture_get_size(int pix_fmt, int width, int height)
412 AVPicture dummy_pict;
413 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
417 * compute the loss when converting from a pixel format to another
419 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
422 const PixFmtInfo *pf, *ps;
425 ps = &pix_fmt_info[src_pix_fmt];
426 pf = &pix_fmt_info[dst_pix_fmt];
430 pf = &pix_fmt_info[dst_pix_fmt];
431 if (pf->depth < ps->depth ||
432 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
433 loss |= FF_LOSS_DEPTH;
434 if (pf->x_chroma_shift > ps->x_chroma_shift ||
435 pf->y_chroma_shift > ps->y_chroma_shift)
436 loss |= FF_LOSS_RESOLUTION;
437 switch(pf->color_type) {
439 if (ps->color_type != FF_COLOR_RGB &&
440 ps->color_type != FF_COLOR_GRAY)
441 loss |= FF_LOSS_COLORSPACE;
444 if (ps->color_type != FF_COLOR_GRAY)
445 loss |= FF_LOSS_COLORSPACE;
448 if (ps->color_type != FF_COLOR_YUV)
449 loss |= FF_LOSS_COLORSPACE;
451 case FF_COLOR_YUV_JPEG:
452 if (ps->color_type != FF_COLOR_YUV_JPEG &&
453 ps->color_type != FF_COLOR_YUV &&
454 ps->color_type != FF_COLOR_GRAY)
455 loss |= FF_LOSS_COLORSPACE;
459 if (ps->color_type != pf->color_type)
460 loss |= FF_LOSS_COLORSPACE;
463 if (pf->color_type == FF_COLOR_GRAY &&
464 ps->color_type != FF_COLOR_GRAY)
465 loss |= FF_LOSS_CHROMA;
466 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
467 loss |= FF_LOSS_ALPHA;
468 if (pf->pixel_type == FF_PIXEL_PALETTE &&
469 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
470 loss |= FF_LOSS_COLORQUANT;
474 static int avg_bits_per_pixel(int pix_fmt)
477 const PixFmtInfo *pf;
479 pf = &pix_fmt_info[pix_fmt];
480 switch(pf->pixel_type) {
481 case FF_PIXEL_PACKED:
484 case PIX_FMT_UYVY422:
489 case PIX_FMT_UYVY411:
493 bits = pf->depth * pf->nb_channels;
497 case FF_PIXEL_PLANAR:
498 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
499 bits = pf->depth * pf->nb_channels;
501 bits = pf->depth + ((2 * pf->depth) >>
502 (pf->x_chroma_shift + pf->y_chroma_shift));
505 case FF_PIXEL_PALETTE:
515 static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
520 int dist, i, loss, min_dist, dst_pix_fmt;
522 /* find exact color match with smallest size */
524 min_dist = 0x7fffffff;
525 for(i = 0;i < PIX_FMT_NB; i++) {
526 if (pix_fmt_mask & (1 << i)) {
527 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
529 dist = avg_bits_per_pixel(i);
530 if (dist < min_dist) {
541 * find best pixel format to convert to. Return -1 if none found
543 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
544 int has_alpha, int *loss_ptr)
546 int dst_pix_fmt, loss_mask, i;
547 static const int loss_mask_order[] = {
548 ~0, /* no loss first */
551 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
557 /* try with successive loss */
560 loss_mask = loss_mask_order[i++];
561 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
562 has_alpha, loss_mask);
563 if (dst_pix_fmt >= 0)
571 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
575 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
576 const uint8_t *src, int src_wrap,
577 int width, int height)
581 for(;height > 0; height--) {
582 memcpy(dst, src, width);
589 * Copy image 'src' to 'dst'.
591 void img_copy(AVPicture *dst, const AVPicture *src,
592 int pix_fmt, int width, int height)
595 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
597 pf = &pix_fmt_info[pix_fmt];
598 switch(pf->pixel_type) {
599 case FF_PIXEL_PACKED:
602 case PIX_FMT_UYVY422:
607 case PIX_FMT_UYVY411:
611 bits = pf->depth * pf->nb_channels;
614 bwidth = (width * bits + 7) >> 3;
615 ff_img_copy_plane(dst->data[0], dst->linesize[0],
616 src->data[0], src->linesize[0],
619 case FF_PIXEL_PLANAR:
620 for(i = 0; i < pf->nb_channels; i++) {
624 if (i == 1 || i == 2) {
625 w >>= pf->x_chroma_shift;
626 h >>= pf->y_chroma_shift;
628 bwidth = (w * pf->depth + 7) >> 3;
629 ff_img_copy_plane(dst->data[i], dst->linesize[i],
630 src->data[i], src->linesize[i],
634 case FF_PIXEL_PALETTE:
635 ff_img_copy_plane(dst->data[0], dst->linesize[0],
636 src->data[0], src->linesize[0],
638 /* copy the palette */
639 ff_img_copy_plane(dst->data[1], dst->linesize[1],
640 src->data[1], src->linesize[1],
646 /* XXX: totally non optimized */
648 static void yuv422_to_yuv420p(AVPicture *dst, const AVPicture *src,
649 int width, int height)
651 const uint8_t *p, *p1;
652 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
660 for(;height >= 1; height -= 2) {
665 for(w = width; w >= 2; w -= 2) {
682 p1 += src->linesize[0];
683 lum1 += dst->linesize[0];
687 for(w = width; w >= 2; w -= 2) {
696 p1 += src->linesize[0];
697 lum1 += dst->linesize[0];
699 cb1 += dst->linesize[1];
700 cr1 += dst->linesize[2];
704 static void uyvy422_to_yuv420p(AVPicture *dst, const AVPicture *src,
705 int width, int height)
707 const uint8_t *p, *p1;
708 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
717 for(;height >= 1; height -= 2) {
722 for(w = width; w >= 2; w -= 2) {
739 p1 += src->linesize[0];
740 lum1 += dst->linesize[0];
744 for(w = width; w >= 2; w -= 2) {
753 p1 += src->linesize[0];
754 lum1 += dst->linesize[0];
756 cb1 += dst->linesize[1];
757 cr1 += dst->linesize[2];
762 static void uyvy422_to_yuv422p(AVPicture *dst, const AVPicture *src,
763 int width, int height)
765 const uint8_t *p, *p1;
766 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
773 for(;height > 0; height--) {
778 for(w = width; w >= 2; w -= 2) {
788 p1 += src->linesize[0];
789 lum1 += dst->linesize[0];
790 cb1 += dst->linesize[1];
791 cr1 += dst->linesize[2];
796 static void yuv422_to_yuv422p(AVPicture *dst, const AVPicture *src,
797 int width, int height)
799 const uint8_t *p, *p1;
800 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
807 for(;height > 0; height--) {
812 for(w = width; w >= 2; w -= 2) {
822 p1 += src->linesize[0];
823 lum1 += dst->linesize[0];
824 cb1 += dst->linesize[1];
825 cr1 += dst->linesize[2];
829 static void yuv422p_to_yuv422(AVPicture *dst, const AVPicture *src,
830 int width, int height)
833 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
840 for(;height > 0; height--) {
845 for(w = width; w >= 2; w -= 2) {
855 p1 += dst->linesize[0];
856 lum1 += src->linesize[0];
857 cb1 += src->linesize[1];
858 cr1 += src->linesize[2];
862 static void yuv422p_to_uyvy422(AVPicture *dst, const AVPicture *src,
863 int width, int height)
866 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
873 for(;height > 0; height--) {
878 for(w = width; w >= 2; w -= 2) {
888 p1 += dst->linesize[0];
889 lum1 += src->linesize[0];
890 cb1 += src->linesize[1];
891 cr1 += src->linesize[2];
895 static void uyvy411_to_yuv411p(AVPicture *dst, const AVPicture *src,
896 int width, int height)
898 const uint8_t *p, *p1;
899 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
906 for(;height > 0; height--) {
911 for(w = width; w >= 4; w -= 4) {
923 p1 += src->linesize[0];
924 lum1 += dst->linesize[0];
925 cb1 += dst->linesize[1];
926 cr1 += dst->linesize[2];
931 static void yuv420p_to_yuv422(AVPicture *dst, const AVPicture *src,
932 int width, int height)
935 uint8_t *line1, *line2, *linesrc = dst->data[0];
936 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
937 uint8_t *cb1, *cb2 = src->data[1];
938 uint8_t *cr1, *cr2 = src->data[2];
940 for(h = height / 2; h--;) {
942 line2 = linesrc + dst->linesize[0];
945 lum2 = lumsrc + src->linesize[0];
950 for(w = width / 2; w--;) {
951 *line1++ = *lum1++; *line2++ = *lum2++;
952 *line1++ = *line2++ = *cb1++;
953 *line1++ = *lum1++; *line2++ = *lum2++;
954 *line1++ = *line2++ = *cr1++;
957 linesrc += dst->linesize[0] * 2;
958 lumsrc += src->linesize[0] * 2;
959 cb2 += src->linesize[1];
960 cr2 += src->linesize[2];
964 static void yuv420p_to_uyvy422(AVPicture *dst, const AVPicture *src,
965 int width, int height)
968 uint8_t *line1, *line2, *linesrc = dst->data[0];
969 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
970 uint8_t *cb1, *cb2 = src->data[1];
971 uint8_t *cr1, *cr2 = src->data[2];
973 for(h = height / 2; h--;) {
975 line2 = linesrc + dst->linesize[0];
978 lum2 = lumsrc + src->linesize[0];
983 for(w = width / 2; w--;) {
984 *line1++ = *line2++ = *cb1++;
985 *line1++ = *lum1++; *line2++ = *lum2++;
986 *line1++ = *line2++ = *cr1++;
987 *line1++ = *lum1++; *line2++ = *lum2++;
990 linesrc += dst->linesize[0] * 2;
991 lumsrc += src->linesize[0] * 2;
992 cb2 += src->linesize[1];
993 cr2 += src->linesize[2];
998 #define ONE_HALF (1 << (SCALEBITS - 1))
999 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
1001 #define YUV_TO_RGB1_CCIR(cb1, cr1)\
1005 r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
1006 g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
1008 b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
1011 #define YUV_TO_RGB2_CCIR(r, g, b, y1)\
1013 y = ((y1) - 16) * FIX(255.0/219.0);\
1014 r = cm[(y + r_add) >> SCALEBITS];\
1015 g = cm[(y + g_add) >> SCALEBITS];\
1016 b = cm[(y + b_add) >> SCALEBITS];\
1019 #define YUV_TO_RGB1(cb1, cr1)\
1023 r_add = FIX(1.40200) * cr + ONE_HALF;\
1024 g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
1025 b_add = FIX(1.77200) * cb + ONE_HALF;\
1028 #define YUV_TO_RGB2(r, g, b, y1)\
1030 y = (y1) << SCALEBITS;\
1031 r = cm[(y + r_add) >> SCALEBITS];\
1032 g = cm[(y + g_add) >> SCALEBITS];\
1033 b = cm[(y + b_add) >> SCALEBITS];\
1036 #define Y_CCIR_TO_JPEG(y)\
1037 cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
1039 #define Y_JPEG_TO_CCIR(y)\
1040 (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1042 #define C_CCIR_TO_JPEG(y)\
1043 cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
1045 /* NOTE: the clamp is really necessary! */
1046 static inline int C_JPEG_TO_CCIR(int y) {
1047 y = (((y - 128) * FIX(112.0/127.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS);
1054 #define RGB_TO_Y(r, g, b) \
1055 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
1056 FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
1058 #define RGB_TO_U(r1, g1, b1, shift)\
1059 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
1060 FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1062 #define RGB_TO_V(r1, g1, b1, shift)\
1063 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
1064 FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1066 #define RGB_TO_Y_CCIR(r, g, b) \
1067 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
1068 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1070 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
1071 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
1072 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1074 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
1075 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
1076 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1078 static uint8_t y_ccir_to_jpeg[256];
1079 static uint8_t y_jpeg_to_ccir[256];
1080 static uint8_t c_ccir_to_jpeg[256];
1081 static uint8_t c_jpeg_to_ccir[256];
1083 /* init various conversion tables */
1084 static void img_convert_init(void)
1087 uint8_t *cm = cropTbl + MAX_NEG_CROP;
1089 for(i = 0;i < 256; i++) {
1090 y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
1091 y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
1092 c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
1093 c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
1097 /* apply to each pixel the given table */
1098 static void img_apply_table(uint8_t *dst, int dst_wrap,
1099 const uint8_t *src, int src_wrap,
1100 int width, int height, const uint8_t *table1)
1105 const uint8_t *table;
1108 for(;height > 0; height--) {
1132 /* XXX: use generic filter ? */
1133 /* XXX: in most cases, the sampling position is incorrect */
1136 static void shrink41(uint8_t *dst, int dst_wrap,
1137 const uint8_t *src, int src_wrap,
1138 int width, int height)
1144 for(;height > 0; height--) {
1147 for(w = width;w > 0; w--) {
1148 d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
1158 static void shrink21(uint8_t *dst, int dst_wrap,
1159 const uint8_t *src, int src_wrap,
1160 int width, int height)
1166 for(;height > 0; height--) {
1169 for(w = width;w > 0; w--) {
1170 d[0] = (s[0] + s[1]) >> 1;
1180 static void shrink12(uint8_t *dst, int dst_wrap,
1181 const uint8_t *src, int src_wrap,
1182 int width, int height)
1186 const uint8_t *s1, *s2;
1188 for(;height > 0; height--) {
1192 for(w = width;w >= 4; w-=4) {
1193 d[0] = (s1[0] + s2[0]) >> 1;
1194 d[1] = (s1[1] + s2[1]) >> 1;
1195 d[2] = (s1[2] + s2[2]) >> 1;
1196 d[3] = (s1[3] + s2[3]) >> 1;
1202 d[0] = (s1[0] + s2[0]) >> 1;
1207 src += 2 * src_wrap;
1213 void ff_shrink22(uint8_t *dst, int dst_wrap,
1214 const uint8_t *src, int src_wrap,
1215 int width, int height)
1218 const uint8_t *s1, *s2;
1221 for(;height > 0; height--) {
1225 for(w = width;w >= 4; w-=4) {
1226 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1227 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1228 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1229 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1235 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1240 src += 2 * src_wrap;
1246 void ff_shrink44(uint8_t *dst, int dst_wrap,
1247 const uint8_t *src, int src_wrap,
1248 int width, int height)
1251 const uint8_t *s1, *s2, *s3, *s4;
1254 for(;height > 0; height--) {
1260 for(w = width;w > 0; w--) {
1261 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1262 s2[0] + s2[1] + s2[2] + s2[3] +
1263 s3[0] + s3[1] + s3[2] + s3[3] +
1264 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1271 src += 4 * src_wrap;
1277 void ff_shrink88(uint8_t *dst, int dst_wrap,
1278 const uint8_t *src, int src_wrap,
1279 int width, int height)
1283 for(;height > 0; height--) {
1284 for(w = width;w > 0; w--) {
1287 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1290 *(dst++) = (tmp + 32)>>6;
1291 src += 8 - 8*src_wrap;
1293 src += 8*src_wrap - 8*width;
1294 dst += dst_wrap - width;
1298 static void grow21_line(uint8_t *dst, const uint8_t *src,
1307 for(w = width;w >= 4; w-=4) {
1308 d[1] = d[0] = s1[0];
1309 d[3] = d[2] = s1[1];
1313 for(;w >= 2; w -= 2) {
1314 d[1] = d[0] = s1[0];
1318 /* only needed if width is not a multiple of two */
1319 /* XXX: veryfy that */
1325 static void grow41_line(uint8_t *dst, const uint8_t *src,
1334 for(w = width;w >= 4; w-=4) {
1346 static void grow21(uint8_t *dst, int dst_wrap,
1347 const uint8_t *src, int src_wrap,
1348 int width, int height)
1350 for(;height > 0; height--) {
1351 grow21_line(dst, src, width);
1358 static void grow22(uint8_t *dst, int dst_wrap,
1359 const uint8_t *src, int src_wrap,
1360 int width, int height)
1362 for(;height > 0; height--) {
1363 grow21_line(dst, src, width);
1371 static void grow41(uint8_t *dst, int dst_wrap,
1372 const uint8_t *src, int src_wrap,
1373 int width, int height)
1375 for(;height > 0; height--) {
1376 grow41_line(dst, src, width);
1383 static void grow44(uint8_t *dst, int dst_wrap,
1384 const uint8_t *src, int src_wrap,
1385 int width, int height)
1387 for(;height > 0; height--) {
1388 grow41_line(dst, src, width);
1389 if ((height & 3) == 1)
1396 static void conv411(uint8_t *dst, int dst_wrap,
1397 const uint8_t *src, int src_wrap,
1398 int width, int height)
1401 const uint8_t *s1, *s2;
1406 for(;height > 0; height--) {
1408 s2 = src + src_wrap;
1410 for(w = width;w > 0; w--) {
1411 c = (s1[0] + s2[0]) >> 1;
1418 src += src_wrap * 2;
1423 /* XXX: add jpeg quantize code */
1425 #define TRANSP_INDEX (6*6*6)
1427 /* this is maybe slow, but allows for extensions */
1428 static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
1430 return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
1433 static void build_rgb_palette(uint8_t *palette, int has_alpha)
1436 static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
1439 pal = (uint32_t *)palette;
1441 for(r = 0; r < 6; r++) {
1442 for(g = 0; g < 6; g++) {
1443 for(b = 0; b < 6; b++) {
1444 pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
1445 (pal_value[g] << 8) | pal_value[b];
1452 pal[i++] = 0xff000000;
1455 /* copy bit n to bits 0 ... n - 1 */
1456 static inline unsigned int bitcopy_n(unsigned int a, int n)
1459 mask = (1 << n) - 1;
1460 return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
1463 /* rgb555 handling */
1465 #define RGB_NAME rgb555
1467 #define RGB_IN(r, g, b, s)\
1469 unsigned int v = ((const uint16_t *)(s))[0];\
1470 r = bitcopy_n(v >> (10 - 3), 3);\
1471 g = bitcopy_n(v >> (5 - 3), 3);\
1472 b = bitcopy_n(v << 3, 3);\
1475 #define RGBA_IN(r, g, b, a, s)\
1477 unsigned int v = ((const uint16_t *)(s))[0];\
1478 r = bitcopy_n(v >> (10 - 3), 3);\
1479 g = bitcopy_n(v >> (5 - 3), 3);\
1480 b = bitcopy_n(v << 3, 3);\
1481 a = (-(v >> 15)) & 0xff;\
1484 #define RGBA_OUT(d, r, g, b, a)\
1486 ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | \
1487 ((a << 8) & 0x8000);\
1492 #include "imgconvert_template.h"
1494 /* rgb565 handling */
1496 #define RGB_NAME rgb565
1498 #define RGB_IN(r, g, b, s)\
1500 unsigned int v = ((const uint16_t *)(s))[0];\
1501 r = bitcopy_n(v >> (11 - 3), 3);\
1502 g = bitcopy_n(v >> (5 - 2), 2);\
1503 b = bitcopy_n(v << 3, 3);\
1506 #define RGB_OUT(d, r, g, b)\
1508 ((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
1513 #include "imgconvert_template.h"
1515 /* bgr24 handling */
1517 #define RGB_NAME bgr24
1519 #define RGB_IN(r, g, b, s)\
1526 #define RGB_OUT(d, r, g, b)\
1535 #include "imgconvert_template.h"
1541 /* rgb24 handling */
1543 #define RGB_NAME rgb24
1546 #define RGB_IN(r, g, b, s)\
1553 #define RGB_OUT(d, r, g, b)\
1562 #include "imgconvert_template.h"
1564 /* rgba32 handling */
1566 #define RGB_NAME rgba32
1569 #define RGB_IN(r, g, b, s)\
1571 unsigned int v = ((const uint32_t *)(s))[0];\
1572 r = (v >> 16) & 0xff;\
1573 g = (v >> 8) & 0xff;\
1577 #define RGBA_IN(r, g, b, a, s)\
1579 unsigned int v = ((const uint32_t *)(s))[0];\
1580 a = (v >> 24) & 0xff;\
1581 r = (v >> 16) & 0xff;\
1582 g = (v >> 8) & 0xff;\
1586 #define RGBA_OUT(d, r, g, b, a)\
1588 ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
1593 #include "imgconvert_template.h"
1595 static void mono_to_gray(AVPicture *dst, const AVPicture *src,
1596 int width, int height, int xor_mask)
1598 const unsigned char *p;
1600 int v, dst_wrap, src_wrap;
1604 src_wrap = src->linesize[0] - ((width + 7) >> 3);
1607 dst_wrap = dst->linesize[0] - width;
1608 for(y=0;y<height;y++) {
1611 v = *p++ ^ xor_mask;
1613 q[1] = -((v >> 6) & 1);
1614 q[2] = -((v >> 5) & 1);
1615 q[3] = -((v >> 4) & 1);
1616 q[4] = -((v >> 3) & 1);
1617 q[5] = -((v >> 2) & 1);
1618 q[6] = -((v >> 1) & 1);
1619 q[7] = -((v >> 0) & 1);
1624 v = *p++ ^ xor_mask;
1626 q[0] = -((v >> 7) & 1);
1636 static void monowhite_to_gray(AVPicture *dst, const AVPicture *src,
1637 int width, int height)
1639 mono_to_gray(dst, src, width, height, 0xff);
1642 static void monoblack_to_gray(AVPicture *dst, const AVPicture *src,
1643 int width, int height)
1645 mono_to_gray(dst, src, width, height, 0x00);
1648 static void gray_to_mono(AVPicture *dst, const AVPicture *src,
1649 int width, int height, int xor_mask)
1654 int j, b, v, n1, src_wrap, dst_wrap, y;
1657 src_wrap = src->linesize[0] - width;
1660 dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
1662 for(y=0;y<height;y++) {
1669 v = (v << 1) | (b >> 7);
1671 d[0] = v ^ xor_mask;
1681 v = (v << 1) | (b >> 7);
1684 d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
1692 static void gray_to_monowhite(AVPicture *dst, const AVPicture *src,
1693 int width, int height)
1695 gray_to_mono(dst, src, width, height, 0xff);
1698 static void gray_to_monoblack(AVPicture *dst, const AVPicture *src,
1699 int width, int height)
1701 gray_to_mono(dst, src, width, height, 0x00);
1704 typedef struct ConvertEntry {
1705 void (*convert)(AVPicture *dst,
1706 const AVPicture *src, int width, int height);
1709 /* Add each new convertion function in this table. In order to be able
1710 to convert from any format to any format, the following constraints
1713 - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
1715 - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
1717 - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGBA32
1719 - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
1722 - PIX_FMT_422 must convert to and from PIX_FMT_422P.
1724 The other conversion functions are just optimisations for common cases.
1726 static const ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
1727 [PIX_FMT_YUV420P] = {
1728 [PIX_FMT_YUV422] = {
1729 .convert = yuv420p_to_yuv422,
1731 [PIX_FMT_RGB555] = {
1732 .convert = yuv420p_to_rgb555
1734 [PIX_FMT_RGB565] = {
1735 .convert = yuv420p_to_rgb565
1738 .convert = yuv420p_to_bgr24
1741 .convert = yuv420p_to_rgb24
1743 [PIX_FMT_RGBA32] = {
1744 .convert = yuv420p_to_rgba32
1746 [PIX_FMT_UYVY422] = {
1747 .convert = yuv420p_to_uyvy422,
1750 [PIX_FMT_YUV422P] = {
1751 [PIX_FMT_YUV422] = {
1752 .convert = yuv422p_to_yuv422,
1754 [PIX_FMT_UYVY422] = {
1755 .convert = yuv422p_to_uyvy422,
1758 [PIX_FMT_YUV444P] = {
1760 .convert = yuv444p_to_rgb24
1763 [PIX_FMT_YUVJ420P] = {
1764 [PIX_FMT_RGB555] = {
1765 .convert = yuvj420p_to_rgb555
1767 [PIX_FMT_RGB565] = {
1768 .convert = yuvj420p_to_rgb565
1771 .convert = yuvj420p_to_bgr24
1774 .convert = yuvj420p_to_rgb24
1776 [PIX_FMT_RGBA32] = {
1777 .convert = yuvj420p_to_rgba32
1780 [PIX_FMT_YUVJ444P] = {
1782 .convert = yuvj444p_to_rgb24
1785 [PIX_FMT_YUV422] = {
1786 [PIX_FMT_YUV420P] = {
1787 .convert = yuv422_to_yuv420p,
1789 [PIX_FMT_YUV422P] = {
1790 .convert = yuv422_to_yuv422p,
1793 [PIX_FMT_UYVY422] = {
1794 [PIX_FMT_YUV420P] = {
1795 .convert = uyvy422_to_yuv420p,
1797 [PIX_FMT_YUV422P] = {
1798 .convert = uyvy422_to_yuv422p,
1802 [PIX_FMT_YUV420P] = {
1803 .convert = rgb24_to_yuv420p
1805 [PIX_FMT_RGB565] = {
1806 .convert = rgb24_to_rgb565
1808 [PIX_FMT_RGB555] = {
1809 .convert = rgb24_to_rgb555
1811 [PIX_FMT_RGBA32] = {
1812 .convert = rgb24_to_rgba32
1815 .convert = rgb24_to_bgr24
1818 .convert = rgb24_to_gray
1821 .convert = rgb24_to_pal8
1823 [PIX_FMT_YUV444P] = {
1824 .convert = rgb24_to_yuv444p
1826 [PIX_FMT_YUVJ420P] = {
1827 .convert = rgb24_to_yuvj420p
1829 [PIX_FMT_YUVJ444P] = {
1830 .convert = rgb24_to_yuvj444p
1833 [PIX_FMT_RGBA32] = {
1835 .convert = rgba32_to_rgb24
1837 [PIX_FMT_RGB555] = {
1838 .convert = rgba32_to_rgb555
1841 .convert = rgba32_to_pal8
1843 [PIX_FMT_YUV420P] = {
1844 .convert = rgba32_to_yuv420p
1847 .convert = rgba32_to_gray
1852 .convert = bgr24_to_rgb24
1854 [PIX_FMT_YUV420P] = {
1855 .convert = bgr24_to_yuv420p
1858 .convert = bgr24_to_gray
1861 [PIX_FMT_RGB555] = {
1863 .convert = rgb555_to_rgb24
1865 [PIX_FMT_RGBA32] = {
1866 .convert = rgb555_to_rgba32
1868 [PIX_FMT_YUV420P] = {
1869 .convert = rgb555_to_yuv420p
1872 .convert = rgb555_to_gray
1875 [PIX_FMT_RGB565] = {
1877 .convert = rgb565_to_rgb24
1879 [PIX_FMT_YUV420P] = {
1880 .convert = rgb565_to_yuv420p
1883 .convert = rgb565_to_gray
1887 [PIX_FMT_RGB555] = {
1888 .convert = gray_to_rgb555
1890 [PIX_FMT_RGB565] = {
1891 .convert = gray_to_rgb565
1894 .convert = gray_to_rgb24
1897 .convert = gray_to_bgr24
1899 [PIX_FMT_RGBA32] = {
1900 .convert = gray_to_rgba32
1902 [PIX_FMT_MONOWHITE] = {
1903 .convert = gray_to_monowhite
1905 [PIX_FMT_MONOBLACK] = {
1906 .convert = gray_to_monoblack
1909 [PIX_FMT_MONOWHITE] = {
1911 .convert = monowhite_to_gray
1914 [PIX_FMT_MONOBLACK] = {
1916 .convert = monoblack_to_gray
1920 [PIX_FMT_RGB555] = {
1921 .convert = pal8_to_rgb555
1923 [PIX_FMT_RGB565] = {
1924 .convert = pal8_to_rgb565
1927 .convert = pal8_to_bgr24
1930 .convert = pal8_to_rgb24
1932 [PIX_FMT_RGBA32] = {
1933 .convert = pal8_to_rgba32
1936 [PIX_FMT_UYVY411] = {
1937 [PIX_FMT_YUV411P] = {
1938 .convert = uyvy411_to_yuv411p,
1944 int avpicture_alloc(AVPicture *picture,
1945 int pix_fmt, int width, int height)
1950 size = avpicture_get_size(pix_fmt, width, height);
1953 ptr = av_malloc(size);
1956 avpicture_fill(picture, ptr, pix_fmt, width, height);
1959 memset(picture, 0, sizeof(AVPicture));
1963 void avpicture_free(AVPicture *picture)
1965 av_free(picture->data[0]);
1968 /* return true if yuv planar */
1969 static inline int is_yuv_planar(const PixFmtInfo *ps)
1971 return (ps->color_type == FF_COLOR_YUV ||
1972 ps->color_type == FF_COLOR_YUV_JPEG) &&
1973 ps->pixel_type == FF_PIXEL_PLANAR;
1977 * Crop image top and left side
1979 int img_crop(AVPicture *dst, const AVPicture *src,
1980 int pix_fmt, int top_band, int left_band)
1985 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1988 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1989 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1991 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1992 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1993 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1995 dst->linesize[0] = src->linesize[0];
1996 dst->linesize[1] = src->linesize[1];
1997 dst->linesize[2] = src->linesize[2];
2004 int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2005 int padtop, int padbottom, int padleft, int padright, int *color)
2007 uint8_t *optr, *iptr;
2013 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
2016 for (i = 0; i < 3; i++) {
2017 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
2018 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
2020 if (padtop || padleft) {
2021 memset(dst->data[i], color[i], dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
2024 if (padleft || padright || src) {
2025 if (src) { /* first line */
2026 iptr = src->data[i];
2027 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift);
2028 memcpy(optr, iptr, src->linesize[i]);
2029 iptr += src->linesize[i];
2031 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + (dst->linesize[i] - (padright >> x_shift));
2032 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2033 for (y = 0; y < yheight; y++) {
2034 memset(optr, color[i], (padleft + padright) >> x_shift);
2036 memcpy(optr + ((padleft + padright) >> x_shift), iptr, src->linesize[i]);
2037 iptr += src->linesize[i];
2039 optr += dst->linesize[i];
2043 if (padbottom || padright) {
2044 optr = dst->data[i] + dst->linesize[i] * ((height - padbottom) >> y_shift) - (padright >> x_shift);
2045 memset(optr, color[i], dst->linesize[i] * (padbottom >> y_shift) + (padright >> x_shift));
2051 #ifndef CONFIG_SWSCALER
2052 /* XXX: always use linesize. Return -1 if not supported */
2053 int img_convert(AVPicture *dst, int dst_pix_fmt,
2054 const AVPicture *src, int src_pix_fmt,
2055 int src_width, int src_height)
2058 int i, ret, dst_width, dst_height, int_pix_fmt;
2059 const PixFmtInfo *src_pix, *dst_pix;
2060 const ConvertEntry *ce;
2061 AVPicture tmp1, *tmp = &tmp1;
2063 if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
2064 dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
2066 if (src_width <= 0 || src_height <= 0)
2074 dst_width = src_width;
2075 dst_height = src_height;
2077 dst_pix = &pix_fmt_info[dst_pix_fmt];
2078 src_pix = &pix_fmt_info[src_pix_fmt];
2079 if (src_pix_fmt == dst_pix_fmt) {
2080 /* no conversion needed: just copy */
2081 img_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
2085 ce = &convert_table[src_pix_fmt][dst_pix_fmt];
2087 /* specific conversion routine */
2088 ce->convert(dst, src, dst_width, dst_height);
2093 if (is_yuv_planar(dst_pix) &&
2094 src_pix_fmt == PIX_FMT_GRAY8) {
2098 if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
2099 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2100 src->data[0], src->linesize[0],
2101 dst_width, dst_height);
2103 img_apply_table(dst->data[0], dst->linesize[0],
2104 src->data[0], src->linesize[0],
2105 dst_width, dst_height,
2108 /* fill U and V with 128 */
2111 w >>= dst_pix->x_chroma_shift;
2112 h >>= dst_pix->y_chroma_shift;
2113 for(i = 1; i <= 2; i++) {
2115 for(y = 0; y< h; y++) {
2117 d += dst->linesize[i];
2124 if (is_yuv_planar(src_pix) &&
2125 dst_pix_fmt == PIX_FMT_GRAY8) {
2126 if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
2127 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2128 src->data[0], src->linesize[0],
2129 dst_width, dst_height);
2131 img_apply_table(dst->data[0], dst->linesize[0],
2132 src->data[0], src->linesize[0],
2133 dst_width, dst_height,
2139 /* YUV to YUV planar */
2140 if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
2141 int x_shift, y_shift, w, h, xy_shift;
2142 void (*resize_func)(uint8_t *dst, int dst_wrap,
2143 const uint8_t *src, int src_wrap,
2144 int width, int height);
2146 /* compute chroma size of the smallest dimensions */
2149 if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
2150 w >>= dst_pix->x_chroma_shift;
2152 w >>= src_pix->x_chroma_shift;
2153 if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
2154 h >>= dst_pix->y_chroma_shift;
2156 h >>= src_pix->y_chroma_shift;
2158 x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
2159 y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
2160 xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
2161 /* there must be filters for conversion at least from and to
2165 resize_func = ff_img_copy_plane;
2168 resize_func = shrink21;
2171 resize_func = shrink41;
2174 resize_func = shrink12;
2177 resize_func = ff_shrink22;
2180 resize_func = ff_shrink44;
2183 resize_func = grow21;
2186 resize_func = grow41;
2189 resize_func = grow22;
2192 resize_func = grow44;
2195 resize_func = conv411;
2198 /* currently not handled */
2199 goto no_chroma_filter;
2202 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2203 src->data[0], src->linesize[0],
2204 dst_width, dst_height);
2206 for(i = 1;i <= 2; i++)
2207 resize_func(dst->data[i], dst->linesize[i],
2208 src->data[i], src->linesize[i],
2209 dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
2210 /* if yuv color space conversion is needed, we do it here on
2211 the destination image */
2212 if (dst_pix->color_type != src_pix->color_type) {
2213 const uint8_t *y_table, *c_table;
2214 if (dst_pix->color_type == FF_COLOR_YUV) {
2215 y_table = y_jpeg_to_ccir;
2216 c_table = c_jpeg_to_ccir;
2218 y_table = y_ccir_to_jpeg;
2219 c_table = c_ccir_to_jpeg;
2221 img_apply_table(dst->data[0], dst->linesize[0],
2222 dst->data[0], dst->linesize[0],
2223 dst_width, dst_height,
2226 for(i = 1;i <= 2; i++)
2227 img_apply_table(dst->data[i], dst->linesize[i],
2228 dst->data[i], dst->linesize[i],
2229 dst_width>>dst_pix->x_chroma_shift,
2230 dst_height>>dst_pix->y_chroma_shift,
2237 /* try to use an intermediate format */
2238 if (src_pix_fmt == PIX_FMT_YUV422 ||
2239 dst_pix_fmt == PIX_FMT_YUV422) {
2240 /* specific case: convert to YUV422P first */
2241 int_pix_fmt = PIX_FMT_YUV422P;
2242 } else if (src_pix_fmt == PIX_FMT_UYVY422 ||
2243 dst_pix_fmt == PIX_FMT_UYVY422) {
2244 /* specific case: convert to YUV422P first */
2245 int_pix_fmt = PIX_FMT_YUV422P;
2246 } else if (src_pix_fmt == PIX_FMT_UYVY411 ||
2247 dst_pix_fmt == PIX_FMT_UYVY411) {
2248 /* specific case: convert to YUV411P first */
2249 int_pix_fmt = PIX_FMT_YUV411P;
2250 } else if ((src_pix->color_type == FF_COLOR_GRAY &&
2251 src_pix_fmt != PIX_FMT_GRAY8) ||
2252 (dst_pix->color_type == FF_COLOR_GRAY &&
2253 dst_pix_fmt != PIX_FMT_GRAY8)) {
2254 /* gray8 is the normalized format */
2255 int_pix_fmt = PIX_FMT_GRAY8;
2256 } else if ((is_yuv_planar(src_pix) &&
2257 src_pix_fmt != PIX_FMT_YUV444P &&
2258 src_pix_fmt != PIX_FMT_YUVJ444P)) {
2259 /* yuv444 is the normalized format */
2260 if (src_pix->color_type == FF_COLOR_YUV_JPEG)
2261 int_pix_fmt = PIX_FMT_YUVJ444P;
2263 int_pix_fmt = PIX_FMT_YUV444P;
2264 } else if ((is_yuv_planar(dst_pix) &&
2265 dst_pix_fmt != PIX_FMT_YUV444P &&
2266 dst_pix_fmt != PIX_FMT_YUVJ444P)) {
2267 /* yuv444 is the normalized format */
2268 if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
2269 int_pix_fmt = PIX_FMT_YUVJ444P;
2271 int_pix_fmt = PIX_FMT_YUV444P;
2273 /* the two formats are rgb or gray8 or yuv[j]444p */
2274 if (src_pix->is_alpha && dst_pix->is_alpha)
2275 int_pix_fmt = PIX_FMT_RGBA32;
2277 int_pix_fmt = PIX_FMT_RGB24;
2279 if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
2282 if (img_convert(tmp, int_pix_fmt,
2283 src, src_pix_fmt, src_width, src_height) < 0)
2285 if (img_convert(dst, dst_pix_fmt,
2286 tmp, int_pix_fmt, dst_width, dst_height) < 0)
2290 avpicture_free(tmp);
2295 /* NOTE: we scan all the pixels to have an exact information */
2296 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
2298 const unsigned char *p;
2299 int src_wrap, ret, x, y;
2301 uint32_t *palette = (uint32_t *)src->data[1];
2304 src_wrap = src->linesize[0] - width;
2306 for(y=0;y<height;y++) {
2307 for(x=0;x<width;x++) {
2308 a = palette[p[0]] >> 24;
2310 ret |= FF_ALPHA_TRANSP;
2311 } else if (a != 0xff) {
2312 ret |= FF_ALPHA_SEMI_TRANSP;
2322 * Tell if an image really has transparent alpha values.
2323 * @return ored mask of FF_ALPHA_xxx constants
2325 int img_get_alpha_info(const AVPicture *src,
2326 int pix_fmt, int width, int height)
2328 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
2331 pf = &pix_fmt_info[pix_fmt];
2332 /* no alpha can be represented in format */
2336 case PIX_FMT_RGBA32:
2337 ret = get_alpha_info_rgba32(src, width, height);
2339 case PIX_FMT_RGB555:
2340 ret = get_alpha_info_rgb555(src, width, height);
2343 ret = get_alpha_info_pal8(src, width, height);
2346 /* we do not know, so everything is indicated */
2347 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
2354 #define DEINT_INPLACE_LINE_LUM \
2355 movd_m2r(lum_m4[0],mm0);\
2356 movd_m2r(lum_m3[0],mm1);\
2357 movd_m2r(lum_m2[0],mm2);\
2358 movd_m2r(lum_m1[0],mm3);\
2359 movd_m2r(lum[0],mm4);\
2360 punpcklbw_r2r(mm7,mm0);\
2361 movd_r2m(mm2,lum_m4[0]);\
2362 punpcklbw_r2r(mm7,mm1);\
2363 punpcklbw_r2r(mm7,mm2);\
2364 punpcklbw_r2r(mm7,mm3);\
2365 punpcklbw_r2r(mm7,mm4);\
2366 paddw_r2r(mm3,mm1);\
2368 paddw_r2r(mm4,mm0);\
2370 paddw_r2r(mm6,mm2);\
2371 paddw_r2r(mm2,mm1);\
2372 psubusw_r2r(mm0,mm1);\
2374 packuswb_r2r(mm7,mm1);\
2375 movd_r2m(mm1,lum_m2[0]);
2377 #define DEINT_LINE_LUM \
2378 movd_m2r(lum_m4[0],mm0);\
2379 movd_m2r(lum_m3[0],mm1);\
2380 movd_m2r(lum_m2[0],mm2);\
2381 movd_m2r(lum_m1[0],mm3);\
2382 movd_m2r(lum[0],mm4);\
2383 punpcklbw_r2r(mm7,mm0);\
2384 punpcklbw_r2r(mm7,mm1);\
2385 punpcklbw_r2r(mm7,mm2);\
2386 punpcklbw_r2r(mm7,mm3);\
2387 punpcklbw_r2r(mm7,mm4);\
2388 paddw_r2r(mm3,mm1);\
2390 paddw_r2r(mm4,mm0);\
2392 paddw_r2r(mm6,mm2);\
2393 paddw_r2r(mm2,mm1);\
2394 psubusw_r2r(mm0,mm1);\
2396 packuswb_r2r(mm7,mm1);\
2397 movd_r2m(mm1,dst[0]);
2400 /* filter parameters: [-1 4 2 4 -1] // 8 */
2401 static void deinterlace_line(uint8_t *dst,
2402 const uint8_t *lum_m4, const uint8_t *lum_m3,
2403 const uint8_t *lum_m2, const uint8_t *lum_m1,
2408 uint8_t *cm = cropTbl + MAX_NEG_CROP;
2411 for(;size > 0;size--) {
2413 sum += lum_m3[0] << 2;
2414 sum += lum_m2[0] << 1;
2415 sum += lum_m1[0] << 2;
2417 dst[0] = cm[(sum + 4) >> 3];
2434 movq_m2r(rounder,mm6);
2436 for (;size > 3; size-=4) {
2447 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
2451 uint8_t *cm = cropTbl + MAX_NEG_CROP;
2454 for(;size > 0;size--) {
2456 sum += lum_m3[0] << 2;
2457 sum += lum_m2[0] << 1;
2458 lum_m4[0]=lum_m2[0];
2459 sum += lum_m1[0] << 2;
2461 lum_m2[0] = cm[(sum + 4) >> 3];
2477 movq_m2r(rounder,mm6);
2479 for (;size > 3; size-=4) {
2480 DEINT_INPLACE_LINE_LUM
2490 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
2491 top field is copied as is, but the bottom field is deinterlaced
2492 against the top field. */
2493 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
2494 const uint8_t *src1, int src_wrap,
2495 int width, int height)
2497 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
2502 src_0=&src_m1[src_wrap];
2503 src_p1=&src_0[src_wrap];
2504 src_p2=&src_p1[src_wrap];
2505 for(y=0;y<(height-2);y+=2) {
2506 memcpy(dst,src_m1,width);
2508 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
2512 src_p1 += 2*src_wrap;
2513 src_p2 += 2*src_wrap;
2516 memcpy(dst,src_m1,width);
2519 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
2522 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
2523 int width, int height)
2525 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
2528 buf = (uint8_t*)av_malloc(width);
2531 memcpy(buf,src_m1,width);
2532 src_0=&src_m1[src_wrap];
2533 src_p1=&src_0[src_wrap];
2534 src_p2=&src_p1[src_wrap];
2535 for(y=0;y<(height-2);y+=2) {
2536 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
2539 src_p1 += 2*src_wrap;
2540 src_p2 += 2*src_wrap;
2543 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
2548 /* deinterlace - if not supported return -1 */
2549 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2550 int pix_fmt, int width, int height)
2554 if (pix_fmt != PIX_FMT_YUV420P &&
2555 pix_fmt != PIX_FMT_YUV422P &&
2556 pix_fmt != PIX_FMT_YUV444P &&
2557 pix_fmt != PIX_FMT_YUV411P)
2559 if ((width & 3) != 0 || (height & 3) != 0)
2565 case PIX_FMT_YUV420P:
2569 case PIX_FMT_YUV422P:
2572 case PIX_FMT_YUV411P:
2580 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
2583 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
2584 src->data[i], src->linesize[i],