2 * Misc image conversion routines
3 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * @file libavcodec/imgconvert.c
24 * misc image conversion routines
28 * - write 'ffimg' program to test all the image related stuff
29 * - move all api to slice based system
30 * - integrate deinterlacing, postprocessing and scaling in the conversion process
35 #include "colorspace.h"
39 #include "x86/dsputil_mmx.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 is_hwaccel : 1; /**< true if this is an HW accelerated format */
61 uint8_t x_chroma_shift; /**< X chroma subsampling factor is 2 ^ shift */
62 uint8_t y_chroma_shift; /**< Y chroma subsampling factor is 2 ^ shift */
63 uint8_t depth; /**< bit depth of the color components */
66 /* this table gives more information about formats */
67 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
72 .color_type = FF_COLOR_YUV,
73 .pixel_type = FF_PIXEL_PLANAR,
75 .x_chroma_shift = 1, .y_chroma_shift = 1,
80 .color_type = FF_COLOR_YUV,
81 .pixel_type = FF_PIXEL_PLANAR,
83 .x_chroma_shift = 1, .y_chroma_shift = 0,
88 .color_type = FF_COLOR_YUV,
89 .pixel_type = FF_PIXEL_PLANAR,
91 .x_chroma_shift = 0, .y_chroma_shift = 0,
96 .color_type = FF_COLOR_YUV,
97 .pixel_type = FF_PIXEL_PACKED,
99 .x_chroma_shift = 1, .y_chroma_shift = 0,
101 [PIX_FMT_UYVY422] = {
104 .color_type = FF_COLOR_YUV,
105 .pixel_type = FF_PIXEL_PACKED,
107 .x_chroma_shift = 1, .y_chroma_shift = 0,
109 [PIX_FMT_YUV410P] = {
112 .color_type = FF_COLOR_YUV,
113 .pixel_type = FF_PIXEL_PLANAR,
115 .x_chroma_shift = 2, .y_chroma_shift = 2,
117 [PIX_FMT_YUV411P] = {
120 .color_type = FF_COLOR_YUV,
121 .pixel_type = FF_PIXEL_PLANAR,
123 .x_chroma_shift = 2, .y_chroma_shift = 0,
125 [PIX_FMT_YUV440P] = {
128 .color_type = FF_COLOR_YUV,
129 .pixel_type = FF_PIXEL_PLANAR,
131 .x_chroma_shift = 0, .y_chroma_shift = 1,
133 [PIX_FMT_YUV420PLE] = {
136 .color_type = FF_COLOR_YUV,
137 .pixel_type = FF_PIXEL_PLANAR,
139 .x_chroma_shift = 1, .y_chroma_shift = 1,
141 [PIX_FMT_YUV422PLE] = {
144 .color_type = FF_COLOR_YUV,
145 .pixel_type = FF_PIXEL_PLANAR,
147 .x_chroma_shift = 1, .y_chroma_shift = 0,
149 [PIX_FMT_YUV444PLE] = {
152 .color_type = FF_COLOR_YUV,
153 .pixel_type = FF_PIXEL_PLANAR,
155 .x_chroma_shift = 0, .y_chroma_shift = 0,
157 [PIX_FMT_YUV420PBE] = {
160 .color_type = FF_COLOR_YUV,
161 .pixel_type = FF_PIXEL_PLANAR,
163 .x_chroma_shift = 1, .y_chroma_shift = 1,
165 [PIX_FMT_YUV422PBE] = {
168 .color_type = FF_COLOR_YUV,
169 .pixel_type = FF_PIXEL_PLANAR,
171 .x_chroma_shift = 1, .y_chroma_shift = 0,
173 [PIX_FMT_YUV444PBE] = {
176 .color_type = FF_COLOR_YUV,
177 .pixel_type = FF_PIXEL_PLANAR,
179 .x_chroma_shift = 0, .y_chroma_shift = 0,
183 /* YUV formats with alpha plane */
184 [PIX_FMT_YUVA420P] = {
187 .color_type = FF_COLOR_YUV,
188 .pixel_type = FF_PIXEL_PLANAR,
190 .x_chroma_shift = 1, .y_chroma_shift = 1,
194 [PIX_FMT_YUVJ420P] = {
197 .color_type = FF_COLOR_YUV_JPEG,
198 .pixel_type = FF_PIXEL_PLANAR,
200 .x_chroma_shift = 1, .y_chroma_shift = 1,
202 [PIX_FMT_YUVJ422P] = {
205 .color_type = FF_COLOR_YUV_JPEG,
206 .pixel_type = FF_PIXEL_PLANAR,
208 .x_chroma_shift = 1, .y_chroma_shift = 0,
210 [PIX_FMT_YUVJ444P] = {
213 .color_type = FF_COLOR_YUV_JPEG,
214 .pixel_type = FF_PIXEL_PLANAR,
216 .x_chroma_shift = 0, .y_chroma_shift = 0,
218 [PIX_FMT_YUVJ440P] = {
221 .color_type = FF_COLOR_YUV_JPEG,
222 .pixel_type = FF_PIXEL_PLANAR,
224 .x_chroma_shift = 0, .y_chroma_shift = 1,
231 .color_type = FF_COLOR_RGB,
232 .pixel_type = FF_PIXEL_PACKED,
234 .x_chroma_shift = 0, .y_chroma_shift = 0,
239 .color_type = FF_COLOR_RGB,
240 .pixel_type = FF_PIXEL_PACKED,
242 .x_chroma_shift = 0, .y_chroma_shift = 0,
246 .nb_channels = 4, .is_alpha = 1,
247 .color_type = FF_COLOR_RGB,
248 .pixel_type = FF_PIXEL_PACKED,
250 .x_chroma_shift = 0, .y_chroma_shift = 0,
252 [PIX_FMT_RGB48BE] = {
255 .color_type = FF_COLOR_RGB,
256 .pixel_type = FF_PIXEL_PACKED,
258 .x_chroma_shift = 0, .y_chroma_shift = 0,
260 [PIX_FMT_RGB48LE] = {
263 .color_type = FF_COLOR_RGB,
264 .pixel_type = FF_PIXEL_PACKED,
266 .x_chroma_shift = 0, .y_chroma_shift = 0,
268 [PIX_FMT_RGB565BE] = {
271 .color_type = FF_COLOR_RGB,
272 .pixel_type = FF_PIXEL_PACKED,
274 .x_chroma_shift = 0, .y_chroma_shift = 0,
276 [PIX_FMT_RGB565LE] = {
279 .color_type = FF_COLOR_RGB,
280 .pixel_type = FF_PIXEL_PACKED,
282 .x_chroma_shift = 0, .y_chroma_shift = 0,
284 [PIX_FMT_RGB555BE] = {
287 .color_type = FF_COLOR_RGB,
288 .pixel_type = FF_PIXEL_PACKED,
290 .x_chroma_shift = 0, .y_chroma_shift = 0,
292 [PIX_FMT_RGB555LE] = {
295 .color_type = FF_COLOR_RGB,
296 .pixel_type = FF_PIXEL_PACKED,
298 .x_chroma_shift = 0, .y_chroma_shift = 0,
301 /* gray / mono formats */
302 [PIX_FMT_GRAY16BE] = {
305 .color_type = FF_COLOR_GRAY,
306 .pixel_type = FF_PIXEL_PLANAR,
309 [PIX_FMT_GRAY16LE] = {
312 .color_type = FF_COLOR_GRAY,
313 .pixel_type = FF_PIXEL_PLANAR,
319 .color_type = FF_COLOR_GRAY,
320 .pixel_type = FF_PIXEL_PLANAR,
323 [PIX_FMT_MONOWHITE] = {
326 .color_type = FF_COLOR_GRAY,
327 .pixel_type = FF_PIXEL_PLANAR,
330 [PIX_FMT_MONOBLACK] = {
333 .color_type = FF_COLOR_GRAY,
334 .pixel_type = FF_PIXEL_PLANAR,
338 /* paletted formats */
341 .nb_channels = 4, .is_alpha = 1,
342 .color_type = FF_COLOR_RGB,
343 .pixel_type = FF_PIXEL_PALETTE,
346 [PIX_FMT_XVMC_MPEG2_MC] = {
350 [PIX_FMT_XVMC_MPEG2_IDCT] = {
354 [PIX_FMT_VDPAU_MPEG1] = {
355 .name = "vdpau_mpeg1",
357 .x_chroma_shift = 1, .y_chroma_shift = 1,
359 [PIX_FMT_VDPAU_MPEG2] = {
360 .name = "vdpau_mpeg2",
362 .x_chroma_shift = 1, .y_chroma_shift = 1,
364 [PIX_FMT_VDPAU_H264] = {
365 .name = "vdpau_h264",
367 .x_chroma_shift = 1, .y_chroma_shift = 1,
369 [PIX_FMT_VDPAU_WMV3] = {
370 .name = "vdpau_wmv3",
372 .x_chroma_shift = 1, .y_chroma_shift = 1,
374 [PIX_FMT_VDPAU_VC1] = {
377 .x_chroma_shift = 1, .y_chroma_shift = 1,
379 [PIX_FMT_UYYVYY411] = {
382 .color_type = FF_COLOR_YUV,
383 .pixel_type = FF_PIXEL_PACKED,
385 .x_chroma_shift = 2, .y_chroma_shift = 0,
389 .nb_channels = 4, .is_alpha = 1,
390 .color_type = FF_COLOR_RGB,
391 .pixel_type = FF_PIXEL_PACKED,
393 .x_chroma_shift = 0, .y_chroma_shift = 0,
395 [PIX_FMT_BGR565BE] = {
398 .color_type = FF_COLOR_RGB,
399 .pixel_type = FF_PIXEL_PACKED,
401 .x_chroma_shift = 0, .y_chroma_shift = 0,
403 [PIX_FMT_BGR565LE] = {
406 .color_type = FF_COLOR_RGB,
407 .pixel_type = FF_PIXEL_PACKED,
409 .x_chroma_shift = 0, .y_chroma_shift = 0,
411 [PIX_FMT_BGR555BE] = {
414 .color_type = FF_COLOR_RGB,
415 .pixel_type = FF_PIXEL_PACKED,
417 .x_chroma_shift = 0, .y_chroma_shift = 0,
419 [PIX_FMT_BGR555LE] = {
422 .color_type = FF_COLOR_RGB,
423 .pixel_type = FF_PIXEL_PACKED,
425 .x_chroma_shift = 0, .y_chroma_shift = 0,
430 .color_type = FF_COLOR_RGB,
431 .pixel_type = FF_PIXEL_PACKED,
433 .x_chroma_shift = 0, .y_chroma_shift = 0,
438 .color_type = FF_COLOR_RGB,
439 .pixel_type = FF_PIXEL_PACKED,
441 .x_chroma_shift = 0, .y_chroma_shift = 0,
443 [PIX_FMT_RGB4_BYTE] = {
446 .color_type = FF_COLOR_RGB,
447 .pixel_type = FF_PIXEL_PACKED,
449 .x_chroma_shift = 0, .y_chroma_shift = 0,
454 .color_type = FF_COLOR_RGB,
455 .pixel_type = FF_PIXEL_PACKED,
457 .x_chroma_shift = 0, .y_chroma_shift = 0,
462 .color_type = FF_COLOR_RGB,
463 .pixel_type = FF_PIXEL_PACKED,
465 .x_chroma_shift = 0, .y_chroma_shift = 0,
467 [PIX_FMT_BGR4_BYTE] = {
470 .color_type = FF_COLOR_RGB,
471 .pixel_type = FF_PIXEL_PACKED,
473 .x_chroma_shift = 0, .y_chroma_shift = 0,
478 .color_type = FF_COLOR_YUV,
479 .pixel_type = FF_PIXEL_PLANAR,
481 .x_chroma_shift = 1, .y_chroma_shift = 1,
486 .color_type = FF_COLOR_YUV,
487 .pixel_type = FF_PIXEL_PLANAR,
489 .x_chroma_shift = 1, .y_chroma_shift = 1,
494 .nb_channels = 4, .is_alpha = 1,
495 .color_type = FF_COLOR_RGB,
496 .pixel_type = FF_PIXEL_PACKED,
498 .x_chroma_shift = 0, .y_chroma_shift = 0,
502 .nb_channels = 4, .is_alpha = 1,
503 .color_type = FF_COLOR_RGB,
504 .pixel_type = FF_PIXEL_PACKED,
506 .x_chroma_shift = 0, .y_chroma_shift = 0,
510 [PIX_FMT_VAAPI_MOCO] = {
511 .name = "vaapi_moco",
513 .x_chroma_shift = 1, .y_chroma_shift = 1,
515 [PIX_FMT_VAAPI_IDCT] = {
516 .name = "vaapi_idct",
518 .x_chroma_shift = 1, .y_chroma_shift = 1,
520 [PIX_FMT_VAAPI_VLD] = {
523 .x_chroma_shift = 1, .y_chroma_shift = 1,
527 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
529 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
530 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
533 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
535 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
538 return pix_fmt_info[pix_fmt].name;
541 static enum PixelFormat avcodec_get_pix_fmt_internal(const char *name)
545 for (i=0; i < PIX_FMT_NB; i++)
546 if (pix_fmt_info[i].name && !strcmp(pix_fmt_info[i].name, name))
551 #ifdef WORDS_BIGENDIAN
552 # define X_NE(be, le) be
554 # define X_NE(be, le) le
557 enum PixelFormat avcodec_get_pix_fmt(const char *name)
559 enum PixelFormat pix_fmt;
561 if (!strcmp(name, "rgb32"))
562 name = X_NE("argb", "bgra");
563 else if (!strcmp(name, "bgr32"))
564 name = X_NE("abgr", "rgba");
566 pix_fmt = avcodec_get_pix_fmt_internal(name);
567 if (pix_fmt == PIX_FMT_NONE) {
569 snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
570 pix_fmt = avcodec_get_pix_fmt_internal(name2);
575 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
579 snprintf (buf, buf_size,
580 "name " " nb_channels" " depth" " is_alpha"
583 PixFmtInfo info= pix_fmt_info[pix_fmt];
585 char is_alpha_char= info.is_alpha ? 'y' : 'n';
587 snprintf (buf, buf_size,
588 "%-10s" " %1d " " %2d " " %c ",
597 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
599 return pix_fmt_info[pix_fmt].is_hwaccel;
602 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
605 for(i=0; i<256; i++){
619 case PIX_FMT_RGB4_BYTE:
624 case PIX_FMT_BGR4_BYTE:
635 pal[i] = b + (g<<8) + (r<<16);
641 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
644 const PixFmtInfo *pinfo;
646 memset(picture->linesize, 0, sizeof(picture->linesize));
648 pinfo = &pix_fmt_info[pix_fmt];
650 case PIX_FMT_YUV420P:
651 case PIX_FMT_YUV422P:
652 case PIX_FMT_YUV444P:
653 case PIX_FMT_YUV410P:
654 case PIX_FMT_YUV411P:
655 case PIX_FMT_YUV440P:
656 case PIX_FMT_YUVJ420P:
657 case PIX_FMT_YUVJ422P:
658 case PIX_FMT_YUVJ444P:
659 case PIX_FMT_YUVJ440P:
660 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
661 picture->linesize[0] = width;
662 picture->linesize[1] = w2;
663 picture->linesize[2] = w2;
665 case PIX_FMT_YUV420PLE:
666 case PIX_FMT_YUV422PLE:
667 case PIX_FMT_YUV444PLE:
668 case PIX_FMT_YUV420PBE:
669 case PIX_FMT_YUV422PBE:
670 case PIX_FMT_YUV444PBE:
671 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
672 picture->linesize[0] = 2*width;
673 picture->linesize[1] = 2*w2;
674 picture->linesize[2] = 2*w2;
676 case PIX_FMT_YUVA420P:
677 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
678 picture->linesize[0] = width;
679 picture->linesize[1] = w2;
680 picture->linesize[2] = w2;
681 picture->linesize[3] = width;
685 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
686 picture->linesize[0] = width;
687 picture->linesize[1] = w2;
691 picture->linesize[0] = width * 3;
697 picture->linesize[0] = width * 4;
699 case PIX_FMT_RGB48BE:
700 case PIX_FMT_RGB48LE:
701 picture->linesize[0] = width * 6;
703 case PIX_FMT_GRAY16BE:
704 case PIX_FMT_GRAY16LE:
709 case PIX_FMT_YUYV422:
710 picture->linesize[0] = width * 2;
712 case PIX_FMT_UYVY422:
713 picture->linesize[0] = width * 2;
715 case PIX_FMT_UYYVYY411:
716 picture->linesize[0] = width + width/2;
720 picture->linesize[0] = width / 2;
722 case PIX_FMT_MONOWHITE:
723 case PIX_FMT_MONOBLACK:
724 picture->linesize[0] = (width + 7) >> 3;
729 case PIX_FMT_RGB4_BYTE:
730 case PIX_FMT_BGR4_BYTE:
732 picture->linesize[0] = width;
740 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
744 const PixFmtInfo *pinfo;
746 pinfo = &pix_fmt_info[pix_fmt];
747 size = picture->linesize[0] * height;
749 case PIX_FMT_YUV420P:
750 case PIX_FMT_YUV422P:
751 case PIX_FMT_YUV444P:
752 case PIX_FMT_YUV410P:
753 case PIX_FMT_YUV411P:
754 case PIX_FMT_YUV440P:
755 case PIX_FMT_YUVJ420P:
756 case PIX_FMT_YUVJ422P:
757 case PIX_FMT_YUVJ444P:
758 case PIX_FMT_YUVJ440P:
759 case PIX_FMT_YUV420PLE:
760 case PIX_FMT_YUV422PLE:
761 case PIX_FMT_YUV444PLE:
762 case PIX_FMT_YUV420PBE:
763 case PIX_FMT_YUV422PBE:
764 case PIX_FMT_YUV444PBE:
765 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
766 size2 = picture->linesize[1] * h2;
767 picture->data[0] = ptr;
768 picture->data[1] = picture->data[0] + size;
769 picture->data[2] = picture->data[1] + size2;
770 picture->data[3] = NULL;
771 return size + 2 * size2;
772 case PIX_FMT_YUVA420P:
773 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
774 size2 = picture->linesize[1] * h2;
775 picture->data[0] = ptr;
776 picture->data[1] = picture->data[0] + size;
777 picture->data[2] = picture->data[1] + size2;
778 picture->data[3] = picture->data[1] + size2 + size2;
779 return 2 * size + 2 * size2;
782 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
783 size2 = picture->linesize[1] * h2 * 2;
784 picture->data[0] = ptr;
785 picture->data[1] = picture->data[0] + size;
786 picture->data[2] = NULL;
787 picture->data[3] = NULL;
788 return size + 2 * size2;
795 case PIX_FMT_RGB48BE:
796 case PIX_FMT_RGB48LE:
797 case PIX_FMT_GRAY16BE:
798 case PIX_FMT_GRAY16LE:
803 case PIX_FMT_YUYV422:
804 case PIX_FMT_UYVY422:
805 case PIX_FMT_UYYVYY411:
808 case PIX_FMT_MONOWHITE:
809 case PIX_FMT_MONOBLACK:
810 picture->data[0] = ptr;
811 picture->data[1] = NULL;
812 picture->data[2] = NULL;
813 picture->data[3] = NULL;
818 case PIX_FMT_RGB4_BYTE:
819 case PIX_FMT_BGR4_BYTE:
821 size2 = (size + 3) & ~3;
822 picture->data[0] = ptr;
823 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
824 picture->data[2] = NULL;
825 picture->data[3] = NULL;
826 return size2 + 256 * 4;
828 picture->data[0] = NULL;
829 picture->data[1] = NULL;
830 picture->data[2] = NULL;
831 picture->data[3] = NULL;
836 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
837 enum PixelFormat pix_fmt, int width, int height)
840 if(avcodec_check_dimensions(NULL, width, height))
843 if (ff_fill_linesize(picture, pix_fmt, width))
846 return ff_fill_pointer(picture, ptr, pix_fmt, height);
849 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
850 unsigned char *dest, int dest_size)
852 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
853 int i, j, w, ow, h, oh, data_planes;
854 const unsigned char* s;
855 int size = avpicture_get_size(pix_fmt, width, height);
857 if (size > dest_size || size < 0)
860 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
861 if (pix_fmt == PIX_FMT_YUYV422 ||
862 pix_fmt == PIX_FMT_UYVY422 ||
863 pix_fmt == PIX_FMT_BGR565 ||
864 pix_fmt == PIX_FMT_BGR555 ||
865 pix_fmt == PIX_FMT_RGB565 ||
866 pix_fmt == PIX_FMT_RGB555)
868 else if (pix_fmt == PIX_FMT_UYYVYY411)
870 else if (pix_fmt == PIX_FMT_PAL8)
873 w = width * (pf->depth * pf->nb_channels / 8);
878 data_planes = pf->nb_channels;
879 w = (width*pf->depth + 7)/8;
886 for (i=0; i<data_planes; i++) {
888 w = width >> pf->x_chroma_shift;
889 h = height >> pf->y_chroma_shift;
898 s += src->linesize[i];
902 if (pf->pixel_type == FF_PIXEL_PALETTE)
903 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
908 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
910 AVPicture dummy_pict;
911 if(avcodec_check_dimensions(NULL, width, height))
916 case PIX_FMT_RGB4_BYTE:
917 case PIX_FMT_BGR4_BYTE:
919 // do not include palette for these pseudo-paletted formats
920 return width * height;
922 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
925 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
928 const PixFmtInfo *pf, *ps;
931 ps = &pix_fmt_info[src_pix_fmt];
935 pf = &pix_fmt_info[dst_pix_fmt];
936 if (pf->depth < ps->depth ||
937 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
938 loss |= FF_LOSS_DEPTH;
939 if (pf->x_chroma_shift > ps->x_chroma_shift ||
940 pf->y_chroma_shift > ps->y_chroma_shift)
941 loss |= FF_LOSS_RESOLUTION;
942 switch(pf->color_type) {
944 if (ps->color_type != FF_COLOR_RGB &&
945 ps->color_type != FF_COLOR_GRAY)
946 loss |= FF_LOSS_COLORSPACE;
949 if (ps->color_type != FF_COLOR_GRAY)
950 loss |= FF_LOSS_COLORSPACE;
953 if (ps->color_type != FF_COLOR_YUV)
954 loss |= FF_LOSS_COLORSPACE;
956 case FF_COLOR_YUV_JPEG:
957 if (ps->color_type != FF_COLOR_YUV_JPEG &&
958 ps->color_type != FF_COLOR_YUV &&
959 ps->color_type != FF_COLOR_GRAY)
960 loss |= FF_LOSS_COLORSPACE;
964 if (ps->color_type != pf->color_type)
965 loss |= FF_LOSS_COLORSPACE;
968 if (pf->color_type == FF_COLOR_GRAY &&
969 ps->color_type != FF_COLOR_GRAY)
970 loss |= FF_LOSS_CHROMA;
971 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
972 loss |= FF_LOSS_ALPHA;
973 if (pf->pixel_type == FF_PIXEL_PALETTE &&
974 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
975 loss |= FF_LOSS_COLORQUANT;
979 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
982 const PixFmtInfo *pf;
984 pf = &pix_fmt_info[pix_fmt];
985 switch(pf->pixel_type) {
986 case FF_PIXEL_PACKED:
988 case PIX_FMT_YUYV422:
989 case PIX_FMT_UYVY422:
996 case PIX_FMT_UYYVYY411:
1000 bits = pf->depth * pf->nb_channels;
1004 case FF_PIXEL_PLANAR:
1005 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
1006 bits = pf->depth * pf->nb_channels;
1008 bits = pf->depth + ((2 * pf->depth) >>
1009 (pf->x_chroma_shift + pf->y_chroma_shift));
1012 case FF_PIXEL_PALETTE:
1022 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
1023 enum PixelFormat src_pix_fmt,
1027 int dist, i, loss, min_dist;
1028 enum PixelFormat dst_pix_fmt;
1030 /* find exact color match with smallest size */
1032 min_dist = 0x7fffffff;
1033 for(i = 0;i < PIX_FMT_NB; i++) {
1034 if (pix_fmt_mask & (1ULL << i)) {
1035 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
1037 dist = avg_bits_per_pixel(i);
1038 if (dist < min_dist) {
1048 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
1049 int has_alpha, int *loss_ptr)
1051 enum PixelFormat dst_pix_fmt;
1053 static const int loss_mask_order[] = {
1054 ~0, /* no loss first */
1056 ~FF_LOSS_RESOLUTION,
1057 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
1058 ~FF_LOSS_COLORQUANT,
1063 /* try with successive loss */
1066 loss_mask = loss_mask_order[i++];
1067 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
1068 has_alpha, loss_mask);
1069 if (dst_pix_fmt >= 0)
1077 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
1081 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
1082 const uint8_t *src, int src_wrap,
1083 int width, int height)
1085 if((!dst) || (!src))
1087 for(;height > 0; height--) {
1088 memcpy(dst, src, width);
1094 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
1097 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1099 pf = &pix_fmt_info[pix_fmt];
1100 switch(pf->pixel_type) {
1101 case FF_PIXEL_PACKED:
1103 case PIX_FMT_YUYV422:
1104 case PIX_FMT_UYVY422:
1105 case PIX_FMT_RGB565:
1106 case PIX_FMT_RGB555:
1107 case PIX_FMT_BGR565:
1108 case PIX_FMT_BGR555:
1111 case PIX_FMT_UYYVYY411:
1115 bits = pf->depth * pf->nb_channels;
1118 return (width * bits + 7) >> 3;
1120 case FF_PIXEL_PLANAR:
1121 if (plane == 1 || plane == 2)
1122 width= -((-width)>>pf->x_chroma_shift);
1124 return (width * pf->depth + 7) >> 3;
1126 case FF_PIXEL_PALETTE:
1135 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1136 enum PixelFormat pix_fmt, int width, int height)
1139 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1141 switch(pf->pixel_type) {
1142 case FF_PIXEL_PACKED:
1143 case FF_PIXEL_PLANAR:
1144 for(i = 0; i < pf->nb_channels; i++) {
1146 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1148 if (i == 1 || i == 2) {
1149 h= -((-height)>>pf->y_chroma_shift);
1151 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1152 src->data[i], src->linesize[i],
1156 case FF_PIXEL_PALETTE:
1157 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1158 src->data[0], src->linesize[0],
1160 /* copy the palette */
1161 ff_img_copy_plane(dst->data[1], dst->linesize[1],
1162 src->data[1], src->linesize[1],
1169 void ff_shrink22(uint8_t *dst, int dst_wrap,
1170 const uint8_t *src, int src_wrap,
1171 int width, int height)
1174 const uint8_t *s1, *s2;
1177 for(;height > 0; height--) {
1181 for(w = width;w >= 4; w-=4) {
1182 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1183 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1184 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1185 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1191 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1196 src += 2 * src_wrap;
1202 void ff_shrink44(uint8_t *dst, int dst_wrap,
1203 const uint8_t *src, int src_wrap,
1204 int width, int height)
1207 const uint8_t *s1, *s2, *s3, *s4;
1210 for(;height > 0; height--) {
1216 for(w = width;w > 0; w--) {
1217 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1218 s2[0] + s2[1] + s2[2] + s2[3] +
1219 s3[0] + s3[1] + s3[2] + s3[3] +
1220 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1227 src += 4 * src_wrap;
1233 void ff_shrink88(uint8_t *dst, int dst_wrap,
1234 const uint8_t *src, int src_wrap,
1235 int width, int height)
1239 for(;height > 0; height--) {
1240 for(w = width;w > 0; w--) {
1243 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1246 *(dst++) = (tmp + 32)>>6;
1247 src += 8 - 8*src_wrap;
1249 src += 8*src_wrap - 8*width;
1250 dst += dst_wrap - width;
1255 int avpicture_alloc(AVPicture *picture,
1256 enum PixelFormat pix_fmt, int width, int height)
1261 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1264 ptr = av_malloc(size);
1267 avpicture_fill(picture, ptr, pix_fmt, width, height);
1268 if(picture->data[1] && !picture->data[2])
1269 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1273 memset(picture, 0, sizeof(AVPicture));
1277 void avpicture_free(AVPicture *picture)
1279 av_free(picture->data[0]);
1282 /* return true if yuv planar */
1283 static inline int is_yuv_planar(const PixFmtInfo *ps)
1285 return (ps->color_type == FF_COLOR_YUV ||
1286 ps->color_type == FF_COLOR_YUV_JPEG) &&
1287 ps->pixel_type == FF_PIXEL_PLANAR;
1290 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1291 int pix_fmt, int top_band, int left_band)
1296 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1299 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1300 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1302 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1303 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1304 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1306 dst->linesize[0] = src->linesize[0];
1307 dst->linesize[1] = src->linesize[1];
1308 dst->linesize[2] = src->linesize[2];
1312 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1313 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1322 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1323 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1325 for (i = 0; i < 3; i++) {
1326 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1327 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1329 if (padtop || padleft) {
1330 memset(dst->data[i], color[i],
1331 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1334 if (padleft || padright) {
1335 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1336 (dst->linesize[i] - (padright >> x_shift));
1337 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1338 for (y = 0; y < yheight; y++) {
1339 memset(optr, color[i], (padleft + padright) >> x_shift);
1340 optr += dst->linesize[i];
1344 if (src) { /* first line */
1345 uint8_t *iptr = src->data[i];
1346 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1347 (padleft >> x_shift);
1348 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1349 iptr += src->linesize[i];
1350 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1351 (dst->linesize[i] - (padright >> x_shift));
1352 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1353 for (y = 0; y < yheight; y++) {
1354 memset(optr, color[i], (padleft + padright) >> x_shift);
1355 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1356 (width - padleft - padright) >> x_shift);
1357 iptr += src->linesize[i];
1358 optr += dst->linesize[i];
1362 if (padbottom || padright) {
1363 optr = dst->data[i] + dst->linesize[i] *
1364 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1365 memset(optr, color[i],dst->linesize[i] *
1366 (padbottom >> y_shift) + (padright >> x_shift));
1372 /* NOTE: we scan all the pixels to have an exact information */
1373 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1375 const unsigned char *p;
1376 int src_wrap, ret, x, y;
1378 uint32_t *palette = (uint32_t *)src->data[1];
1381 src_wrap = src->linesize[0] - width;
1383 for(y=0;y<height;y++) {
1384 for(x=0;x<width;x++) {
1385 a = palette[p[0]] >> 24;
1387 ret |= FF_ALPHA_TRANSP;
1388 } else if (a != 0xff) {
1389 ret |= FF_ALPHA_SEMI_TRANSP;
1398 int img_get_alpha_info(const AVPicture *src,
1399 enum PixelFormat pix_fmt, int width, int height)
1401 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1404 /* no alpha can be represented in format */
1409 ret = get_alpha_info_pal8(src, width, height);
1412 /* we do not know, so everything is indicated */
1413 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1420 #define DEINT_INPLACE_LINE_LUM \
1421 movd_m2r(lum_m4[0],mm0);\
1422 movd_m2r(lum_m3[0],mm1);\
1423 movd_m2r(lum_m2[0],mm2);\
1424 movd_m2r(lum_m1[0],mm3);\
1425 movd_m2r(lum[0],mm4);\
1426 punpcklbw_r2r(mm7,mm0);\
1427 movd_r2m(mm2,lum_m4[0]);\
1428 punpcklbw_r2r(mm7,mm1);\
1429 punpcklbw_r2r(mm7,mm2);\
1430 punpcklbw_r2r(mm7,mm3);\
1431 punpcklbw_r2r(mm7,mm4);\
1432 paddw_r2r(mm3,mm1);\
1434 paddw_r2r(mm4,mm0);\
1436 paddw_r2r(mm6,mm2);\
1437 paddw_r2r(mm2,mm1);\
1438 psubusw_r2r(mm0,mm1);\
1440 packuswb_r2r(mm7,mm1);\
1441 movd_r2m(mm1,lum_m2[0]);
1443 #define DEINT_LINE_LUM \
1444 movd_m2r(lum_m4[0],mm0);\
1445 movd_m2r(lum_m3[0],mm1);\
1446 movd_m2r(lum_m2[0],mm2);\
1447 movd_m2r(lum_m1[0],mm3);\
1448 movd_m2r(lum[0],mm4);\
1449 punpcklbw_r2r(mm7,mm0);\
1450 punpcklbw_r2r(mm7,mm1);\
1451 punpcklbw_r2r(mm7,mm2);\
1452 punpcklbw_r2r(mm7,mm3);\
1453 punpcklbw_r2r(mm7,mm4);\
1454 paddw_r2r(mm3,mm1);\
1456 paddw_r2r(mm4,mm0);\
1458 paddw_r2r(mm6,mm2);\
1459 paddw_r2r(mm2,mm1);\
1460 psubusw_r2r(mm0,mm1);\
1462 packuswb_r2r(mm7,mm1);\
1463 movd_r2m(mm1,dst[0]);
1466 /* filter parameters: [-1 4 2 4 -1] // 8 */
1467 static void deinterlace_line(uint8_t *dst,
1468 const uint8_t *lum_m4, const uint8_t *lum_m3,
1469 const uint8_t *lum_m2, const uint8_t *lum_m1,
1474 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1477 for(;size > 0;size--) {
1479 sum += lum_m3[0] << 2;
1480 sum += lum_m2[0] << 1;
1481 sum += lum_m1[0] << 2;
1483 dst[0] = cm[(sum + 4) >> 3];
1495 movq_m2r(ff_pw_4,mm6);
1497 for (;size > 3; size-=4) {
1508 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1512 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1515 for(;size > 0;size--) {
1517 sum += lum_m3[0] << 2;
1518 sum += lum_m2[0] << 1;
1519 lum_m4[0]=lum_m2[0];
1520 sum += lum_m1[0] << 2;
1522 lum_m2[0] = cm[(sum + 4) >> 3];
1533 movq_m2r(ff_pw_4,mm6);
1535 for (;size > 3; size-=4) {
1536 DEINT_INPLACE_LINE_LUM
1546 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1547 top field is copied as is, but the bottom field is deinterlaced
1548 against the top field. */
1549 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1550 const uint8_t *src1, int src_wrap,
1551 int width, int height)
1553 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1558 src_0=&src_m1[src_wrap];
1559 src_p1=&src_0[src_wrap];
1560 src_p2=&src_p1[src_wrap];
1561 for(y=0;y<(height-2);y+=2) {
1562 memcpy(dst,src_m1,width);
1564 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1568 src_p1 += 2*src_wrap;
1569 src_p2 += 2*src_wrap;
1572 memcpy(dst,src_m1,width);
1575 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1578 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1579 int width, int height)
1581 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1584 buf = (uint8_t*)av_malloc(width);
1587 memcpy(buf,src_m1,width);
1588 src_0=&src_m1[src_wrap];
1589 src_p1=&src_0[src_wrap];
1590 src_p2=&src_p1[src_wrap];
1591 for(y=0;y<(height-2);y+=2) {
1592 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1595 src_p1 += 2*src_wrap;
1596 src_p2 += 2*src_wrap;
1599 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1603 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1604 enum PixelFormat pix_fmt, int width, int height)
1608 if (pix_fmt != PIX_FMT_YUV420P &&
1609 pix_fmt != PIX_FMT_YUV422P &&
1610 pix_fmt != PIX_FMT_YUV444P &&
1611 pix_fmt != PIX_FMT_YUV411P &&
1612 pix_fmt != PIX_FMT_GRAY8)
1614 if ((width & 3) != 0 || (height & 3) != 0)
1620 case PIX_FMT_YUV420P:
1624 case PIX_FMT_YUV422P:
1627 case PIX_FMT_YUV411P:
1633 if (pix_fmt == PIX_FMT_GRAY8) {
1638 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1641 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1642 src->data[i], src->linesize[i],