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_YUV420P16LE] = {
134 .name = "yuv420p16le",
136 .color_type = FF_COLOR_YUV,
137 .pixel_type = FF_PIXEL_PLANAR,
139 .x_chroma_shift = 1, .y_chroma_shift = 1,
141 [PIX_FMT_YUV422P16LE] = {
142 .name = "yuv422p16le",
144 .color_type = FF_COLOR_YUV,
145 .pixel_type = FF_PIXEL_PLANAR,
147 .x_chroma_shift = 1, .y_chroma_shift = 0,
149 [PIX_FMT_YUV444P16LE] = {
150 .name = "yuv444p16le",
152 .color_type = FF_COLOR_YUV,
153 .pixel_type = FF_PIXEL_PLANAR,
155 .x_chroma_shift = 0, .y_chroma_shift = 0,
157 [PIX_FMT_YUV420P16BE] = {
158 .name = "yuv420p16be",
160 .color_type = FF_COLOR_YUV,
161 .pixel_type = FF_PIXEL_PLANAR,
163 .x_chroma_shift = 1, .y_chroma_shift = 1,
165 [PIX_FMT_YUV422P16BE] = {
166 .name = "yuv422p16be",
168 .color_type = FF_COLOR_YUV,
169 .pixel_type = FF_PIXEL_PLANAR,
171 .x_chroma_shift = 1, .y_chroma_shift = 0,
173 [PIX_FMT_YUV444P16BE] = {
174 .name = "yuv444p16be",
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_VDPAU_MPEG4] = {
380 .name = "vdpau_mpeg4",
382 .x_chroma_shift = 1, .y_chroma_shift = 1,
384 [PIX_FMT_UYYVYY411] = {
387 .color_type = FF_COLOR_YUV,
388 .pixel_type = FF_PIXEL_PACKED,
390 .x_chroma_shift = 2, .y_chroma_shift = 0,
394 .nb_channels = 4, .is_alpha = 1,
395 .color_type = FF_COLOR_RGB,
396 .pixel_type = FF_PIXEL_PACKED,
398 .x_chroma_shift = 0, .y_chroma_shift = 0,
400 [PIX_FMT_BGR565BE] = {
403 .color_type = FF_COLOR_RGB,
404 .pixel_type = FF_PIXEL_PACKED,
406 .x_chroma_shift = 0, .y_chroma_shift = 0,
408 [PIX_FMT_BGR565LE] = {
411 .color_type = FF_COLOR_RGB,
412 .pixel_type = FF_PIXEL_PACKED,
414 .x_chroma_shift = 0, .y_chroma_shift = 0,
416 [PIX_FMT_BGR555BE] = {
419 .color_type = FF_COLOR_RGB,
420 .pixel_type = FF_PIXEL_PACKED,
422 .x_chroma_shift = 0, .y_chroma_shift = 0,
424 [PIX_FMT_BGR555LE] = {
427 .color_type = FF_COLOR_RGB,
428 .pixel_type = FF_PIXEL_PACKED,
430 .x_chroma_shift = 0, .y_chroma_shift = 0,
435 .color_type = FF_COLOR_RGB,
436 .pixel_type = FF_PIXEL_PACKED,
438 .x_chroma_shift = 0, .y_chroma_shift = 0,
443 .color_type = FF_COLOR_RGB,
444 .pixel_type = FF_PIXEL_PACKED,
446 .x_chroma_shift = 0, .y_chroma_shift = 0,
448 [PIX_FMT_RGB4_BYTE] = {
451 .color_type = FF_COLOR_RGB,
452 .pixel_type = FF_PIXEL_PACKED,
454 .x_chroma_shift = 0, .y_chroma_shift = 0,
459 .color_type = FF_COLOR_RGB,
460 .pixel_type = FF_PIXEL_PACKED,
462 .x_chroma_shift = 0, .y_chroma_shift = 0,
467 .color_type = FF_COLOR_RGB,
468 .pixel_type = FF_PIXEL_PACKED,
470 .x_chroma_shift = 0, .y_chroma_shift = 0,
472 [PIX_FMT_BGR4_BYTE] = {
475 .color_type = FF_COLOR_RGB,
476 .pixel_type = FF_PIXEL_PACKED,
478 .x_chroma_shift = 0, .y_chroma_shift = 0,
483 .color_type = FF_COLOR_YUV,
484 .pixel_type = FF_PIXEL_PLANAR,
486 .x_chroma_shift = 1, .y_chroma_shift = 1,
491 .color_type = FF_COLOR_YUV,
492 .pixel_type = FF_PIXEL_PLANAR,
494 .x_chroma_shift = 1, .y_chroma_shift = 1,
499 .nb_channels = 4, .is_alpha = 1,
500 .color_type = FF_COLOR_RGB,
501 .pixel_type = FF_PIXEL_PACKED,
503 .x_chroma_shift = 0, .y_chroma_shift = 0,
507 .nb_channels = 4, .is_alpha = 1,
508 .color_type = FF_COLOR_RGB,
509 .pixel_type = FF_PIXEL_PACKED,
511 .x_chroma_shift = 0, .y_chroma_shift = 0,
515 [PIX_FMT_VAAPI_MOCO] = {
516 .name = "vaapi_moco",
518 .x_chroma_shift = 1, .y_chroma_shift = 1,
520 [PIX_FMT_VAAPI_IDCT] = {
521 .name = "vaapi_idct",
523 .x_chroma_shift = 1, .y_chroma_shift = 1,
525 [PIX_FMT_VAAPI_VLD] = {
528 .x_chroma_shift = 1, .y_chroma_shift = 1,
532 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
534 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
535 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
538 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
540 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
543 return pix_fmt_info[pix_fmt].name;
546 static enum PixelFormat avcodec_get_pix_fmt_internal(const char *name)
550 for (i=0; i < PIX_FMT_NB; i++)
551 if (pix_fmt_info[i].name && !strcmp(pix_fmt_info[i].name, name))
557 # define X_NE(be, le) be
559 # define X_NE(be, le) le
562 enum PixelFormat avcodec_get_pix_fmt(const char *name)
564 enum PixelFormat pix_fmt;
566 if (!strcmp(name, "rgb32"))
567 name = X_NE("argb", "bgra");
568 else if (!strcmp(name, "bgr32"))
569 name = X_NE("abgr", "rgba");
571 pix_fmt = avcodec_get_pix_fmt_internal(name);
572 if (pix_fmt == PIX_FMT_NONE) {
574 snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
575 pix_fmt = avcodec_get_pix_fmt_internal(name2);
580 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
584 snprintf (buf, buf_size,
585 "name " " nb_channels" " depth" " is_alpha"
588 PixFmtInfo info= pix_fmt_info[pix_fmt];
590 char is_alpha_char= info.is_alpha ? 'y' : 'n';
592 snprintf (buf, buf_size,
602 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
604 return pix_fmt_info[pix_fmt].is_hwaccel;
607 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
610 for(i=0; i<256; i++){
624 case PIX_FMT_RGB4_BYTE:
629 case PIX_FMT_BGR4_BYTE:
640 pal[i] = b + (g<<8) + (r<<16);
646 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
649 const PixFmtInfo *pinfo;
651 memset(picture->linesize, 0, sizeof(picture->linesize));
653 pinfo = &pix_fmt_info[pix_fmt];
655 case PIX_FMT_YUV420P:
656 case PIX_FMT_YUV422P:
657 case PIX_FMT_YUV444P:
658 case PIX_FMT_YUV410P:
659 case PIX_FMT_YUV411P:
660 case PIX_FMT_YUV440P:
661 case PIX_FMT_YUVJ420P:
662 case PIX_FMT_YUVJ422P:
663 case PIX_FMT_YUVJ444P:
664 case PIX_FMT_YUVJ440P:
665 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
666 picture->linesize[0] = width;
667 picture->linesize[1] = w2;
668 picture->linesize[2] = w2;
670 case PIX_FMT_YUV420P16LE:
671 case PIX_FMT_YUV422P16LE:
672 case PIX_FMT_YUV444P16LE:
673 case PIX_FMT_YUV420P16BE:
674 case PIX_FMT_YUV422P16BE:
675 case PIX_FMT_YUV444P16BE:
676 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
677 picture->linesize[0] = 2*width;
678 picture->linesize[1] = 2*w2;
679 picture->linesize[2] = 2*w2;
681 case PIX_FMT_YUVA420P:
682 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
683 picture->linesize[0] = width;
684 picture->linesize[1] = w2;
685 picture->linesize[2] = w2;
686 picture->linesize[3] = width;
690 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
691 picture->linesize[0] = width;
692 picture->linesize[1] = w2;
696 picture->linesize[0] = width * 3;
702 picture->linesize[0] = width * 4;
704 case PIX_FMT_RGB48BE:
705 case PIX_FMT_RGB48LE:
706 picture->linesize[0] = width * 6;
708 case PIX_FMT_GRAY16BE:
709 case PIX_FMT_GRAY16LE:
710 case PIX_FMT_BGR555BE:
711 case PIX_FMT_BGR555LE:
712 case PIX_FMT_BGR565BE:
713 case PIX_FMT_BGR565LE:
714 case PIX_FMT_RGB555BE:
715 case PIX_FMT_RGB555LE:
716 case PIX_FMT_RGB565BE:
717 case PIX_FMT_RGB565LE:
718 case PIX_FMT_YUYV422:
719 picture->linesize[0] = width * 2;
721 case PIX_FMT_UYVY422:
722 picture->linesize[0] = width * 2;
724 case PIX_FMT_UYYVYY411:
725 picture->linesize[0] = width + width/2;
729 picture->linesize[0] = width / 2;
731 case PIX_FMT_MONOWHITE:
732 case PIX_FMT_MONOBLACK:
733 picture->linesize[0] = (width + 7) >> 3;
738 case PIX_FMT_RGB4_BYTE:
739 case PIX_FMT_BGR4_BYTE:
741 picture->linesize[0] = width;
749 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
753 const PixFmtInfo *pinfo;
755 pinfo = &pix_fmt_info[pix_fmt];
756 size = picture->linesize[0] * height;
758 case PIX_FMT_YUV420P:
759 case PIX_FMT_YUV422P:
760 case PIX_FMT_YUV444P:
761 case PIX_FMT_YUV410P:
762 case PIX_FMT_YUV411P:
763 case PIX_FMT_YUV440P:
764 case PIX_FMT_YUVJ420P:
765 case PIX_FMT_YUVJ422P:
766 case PIX_FMT_YUVJ444P:
767 case PIX_FMT_YUVJ440P:
768 case PIX_FMT_YUV420P16LE:
769 case PIX_FMT_YUV422P16LE:
770 case PIX_FMT_YUV444P16LE:
771 case PIX_FMT_YUV420P16BE:
772 case PIX_FMT_YUV422P16BE:
773 case PIX_FMT_YUV444P16BE:
774 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
775 size2 = picture->linesize[1] * h2;
776 picture->data[0] = ptr;
777 picture->data[1] = picture->data[0] + size;
778 picture->data[2] = picture->data[1] + size2;
779 picture->data[3] = NULL;
780 return size + 2 * size2;
781 case PIX_FMT_YUVA420P:
782 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
783 size2 = picture->linesize[1] * h2;
784 picture->data[0] = ptr;
785 picture->data[1] = picture->data[0] + size;
786 picture->data[2] = picture->data[1] + size2;
787 picture->data[3] = picture->data[1] + size2 + size2;
788 return 2 * size + 2 * size2;
791 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
792 size2 = picture->linesize[1] * h2 * 2;
793 picture->data[0] = ptr;
794 picture->data[1] = picture->data[0] + size;
795 picture->data[2] = NULL;
796 picture->data[3] = NULL;
797 return size + 2 * size2;
804 case PIX_FMT_RGB48BE:
805 case PIX_FMT_RGB48LE:
806 case PIX_FMT_GRAY16BE:
807 case PIX_FMT_GRAY16LE:
808 case PIX_FMT_BGR555BE:
809 case PIX_FMT_BGR555LE:
810 case PIX_FMT_BGR565BE:
811 case PIX_FMT_BGR565LE:
812 case PIX_FMT_RGB555BE:
813 case PIX_FMT_RGB555LE:
814 case PIX_FMT_RGB565BE:
815 case PIX_FMT_RGB565LE:
816 case PIX_FMT_YUYV422:
817 case PIX_FMT_UYVY422:
818 case PIX_FMT_UYYVYY411:
821 case PIX_FMT_MONOWHITE:
822 case PIX_FMT_MONOBLACK:
823 picture->data[0] = ptr;
824 picture->data[1] = NULL;
825 picture->data[2] = NULL;
826 picture->data[3] = NULL;
831 case PIX_FMT_RGB4_BYTE:
832 case PIX_FMT_BGR4_BYTE:
834 size2 = (size + 3) & ~3;
835 picture->data[0] = ptr;
836 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
837 picture->data[2] = NULL;
838 picture->data[3] = NULL;
839 return size2 + 256 * 4;
841 picture->data[0] = NULL;
842 picture->data[1] = NULL;
843 picture->data[2] = NULL;
844 picture->data[3] = NULL;
849 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
850 enum PixelFormat pix_fmt, int width, int height)
853 if(avcodec_check_dimensions(NULL, width, height))
856 if (ff_fill_linesize(picture, pix_fmt, width))
859 return ff_fill_pointer(picture, ptr, pix_fmt, height);
862 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
863 unsigned char *dest, int dest_size)
865 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
866 int i, j, w, ow, h, oh, data_planes;
867 const unsigned char* s;
868 int size = avpicture_get_size(pix_fmt, width, height);
870 if (size > dest_size || size < 0)
873 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
874 if (pix_fmt == PIX_FMT_YUYV422 ||
875 pix_fmt == PIX_FMT_UYVY422 ||
876 pix_fmt == PIX_FMT_BGR565BE ||
877 pix_fmt == PIX_FMT_BGR565LE ||
878 pix_fmt == PIX_FMT_BGR555BE ||
879 pix_fmt == PIX_FMT_BGR555LE ||
880 pix_fmt == PIX_FMT_RGB565BE ||
881 pix_fmt == PIX_FMT_RGB565LE ||
882 pix_fmt == PIX_FMT_RGB555BE ||
883 pix_fmt == PIX_FMT_RGB555LE)
885 else if (pix_fmt == PIX_FMT_UYYVYY411)
887 else if (pix_fmt == PIX_FMT_PAL8)
890 w = width * (pf->depth * pf->nb_channels / 8);
895 data_planes = pf->nb_channels;
896 w = (width*pf->depth + 7)/8;
903 for (i=0; i<data_planes; i++) {
905 w = ((width >> pf->x_chroma_shift) * pf->depth + 7) / 8;
906 h = height >> pf->y_chroma_shift;
915 s += src->linesize[i];
919 if (pf->pixel_type == FF_PIXEL_PALETTE)
920 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
925 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
927 AVPicture dummy_pict;
928 if(avcodec_check_dimensions(NULL, width, height))
933 case PIX_FMT_RGB4_BYTE:
934 case PIX_FMT_BGR4_BYTE:
936 // do not include palette for these pseudo-paletted formats
937 return width * height;
939 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
942 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
945 const PixFmtInfo *pf, *ps;
948 ps = &pix_fmt_info[src_pix_fmt];
952 pf = &pix_fmt_info[dst_pix_fmt];
953 if (pf->depth < ps->depth ||
954 ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE) &&
955 (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE)))
956 loss |= FF_LOSS_DEPTH;
957 if (pf->x_chroma_shift > ps->x_chroma_shift ||
958 pf->y_chroma_shift > ps->y_chroma_shift)
959 loss |= FF_LOSS_RESOLUTION;
960 switch(pf->color_type) {
962 if (ps->color_type != FF_COLOR_RGB &&
963 ps->color_type != FF_COLOR_GRAY)
964 loss |= FF_LOSS_COLORSPACE;
967 if (ps->color_type != FF_COLOR_GRAY)
968 loss |= FF_LOSS_COLORSPACE;
971 if (ps->color_type != FF_COLOR_YUV)
972 loss |= FF_LOSS_COLORSPACE;
974 case FF_COLOR_YUV_JPEG:
975 if (ps->color_type != FF_COLOR_YUV_JPEG &&
976 ps->color_type != FF_COLOR_YUV &&
977 ps->color_type != FF_COLOR_GRAY)
978 loss |= FF_LOSS_COLORSPACE;
982 if (ps->color_type != pf->color_type)
983 loss |= FF_LOSS_COLORSPACE;
986 if (pf->color_type == FF_COLOR_GRAY &&
987 ps->color_type != FF_COLOR_GRAY)
988 loss |= FF_LOSS_CHROMA;
989 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
990 loss |= FF_LOSS_ALPHA;
991 if (pf->pixel_type == FF_PIXEL_PALETTE &&
992 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
993 loss |= FF_LOSS_COLORQUANT;
997 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
1000 const PixFmtInfo *pf;
1002 pf = &pix_fmt_info[pix_fmt];
1003 switch(pf->pixel_type) {
1004 case FF_PIXEL_PACKED:
1006 case PIX_FMT_YUYV422:
1007 case PIX_FMT_UYVY422:
1008 case PIX_FMT_RGB565BE:
1009 case PIX_FMT_RGB565LE:
1010 case PIX_FMT_RGB555BE:
1011 case PIX_FMT_RGB555LE:
1012 case PIX_FMT_BGR565BE:
1013 case PIX_FMT_BGR565LE:
1014 case PIX_FMT_BGR555BE:
1015 case PIX_FMT_BGR555LE:
1018 case PIX_FMT_UYYVYY411:
1022 bits = pf->depth * pf->nb_channels;
1026 case FF_PIXEL_PLANAR:
1027 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
1028 bits = pf->depth * pf->nb_channels;
1030 bits = pf->depth + ((2 * pf->depth) >>
1031 (pf->x_chroma_shift + pf->y_chroma_shift));
1034 case FF_PIXEL_PALETTE:
1044 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
1045 enum PixelFormat src_pix_fmt,
1049 int dist, i, loss, min_dist;
1050 enum PixelFormat dst_pix_fmt;
1052 /* find exact color match with smallest size */
1054 min_dist = 0x7fffffff;
1055 for(i = 0;i < PIX_FMT_NB; i++) {
1056 if (pix_fmt_mask & (1ULL << i)) {
1057 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
1059 dist = avg_bits_per_pixel(i);
1060 if (dist < min_dist) {
1070 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
1071 int has_alpha, int *loss_ptr)
1073 enum PixelFormat dst_pix_fmt;
1075 static const int loss_mask_order[] = {
1076 ~0, /* no loss first */
1078 ~FF_LOSS_RESOLUTION,
1079 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
1080 ~FF_LOSS_COLORQUANT,
1085 /* try with successive loss */
1088 loss_mask = loss_mask_order[i++];
1089 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
1090 has_alpha, loss_mask);
1091 if (dst_pix_fmt >= 0)
1099 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
1103 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
1104 const uint8_t *src, int src_wrap,
1105 int width, int height)
1107 if((!dst) || (!src))
1109 for(;height > 0; height--) {
1110 memcpy(dst, src, width);
1116 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
1119 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1121 pf = &pix_fmt_info[pix_fmt];
1122 switch(pf->pixel_type) {
1123 case FF_PIXEL_PACKED:
1125 case PIX_FMT_YUYV422:
1126 case PIX_FMT_UYVY422:
1127 case PIX_FMT_RGB565BE:
1128 case PIX_FMT_RGB565LE:
1129 case PIX_FMT_RGB555BE:
1130 case PIX_FMT_RGB555LE:
1131 case PIX_FMT_BGR565BE:
1132 case PIX_FMT_BGR565LE:
1133 case PIX_FMT_BGR555BE:
1134 case PIX_FMT_BGR555LE:
1137 case PIX_FMT_UYYVYY411:
1141 bits = pf->depth * pf->nb_channels;
1144 return (width * bits + 7) >> 3;
1146 case FF_PIXEL_PLANAR:
1147 if (plane == 1 || plane == 2)
1148 width= -((-width)>>pf->x_chroma_shift);
1150 return (width * pf->depth + 7) >> 3;
1152 case FF_PIXEL_PALETTE:
1161 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1162 enum PixelFormat pix_fmt, int width, int height)
1165 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1167 switch(pf->pixel_type) {
1168 case FF_PIXEL_PACKED:
1169 case FF_PIXEL_PLANAR:
1170 for(i = 0; i < pf->nb_channels; i++) {
1172 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1174 if (i == 1 || i == 2) {
1175 h= -((-height)>>pf->y_chroma_shift);
1177 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1178 src->data[i], src->linesize[i],
1182 case FF_PIXEL_PALETTE:
1183 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1184 src->data[0], src->linesize[0],
1186 /* copy the palette */
1187 ff_img_copy_plane(dst->data[1], dst->linesize[1],
1188 src->data[1], src->linesize[1],
1195 void ff_shrink22(uint8_t *dst, int dst_wrap,
1196 const uint8_t *src, int src_wrap,
1197 int width, int height)
1200 const uint8_t *s1, *s2;
1203 for(;height > 0; height--) {
1207 for(w = width;w >= 4; w-=4) {
1208 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1209 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1210 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1211 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1217 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1222 src += 2 * src_wrap;
1228 void ff_shrink44(uint8_t *dst, int dst_wrap,
1229 const uint8_t *src, int src_wrap,
1230 int width, int height)
1233 const uint8_t *s1, *s2, *s3, *s4;
1236 for(;height > 0; height--) {
1242 for(w = width;w > 0; w--) {
1243 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1244 s2[0] + s2[1] + s2[2] + s2[3] +
1245 s3[0] + s3[1] + s3[2] + s3[3] +
1246 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1253 src += 4 * src_wrap;
1259 void ff_shrink88(uint8_t *dst, int dst_wrap,
1260 const uint8_t *src, int src_wrap,
1261 int width, int height)
1265 for(;height > 0; height--) {
1266 for(w = width;w > 0; w--) {
1269 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1272 *(dst++) = (tmp + 32)>>6;
1273 src += 8 - 8*src_wrap;
1275 src += 8*src_wrap - 8*width;
1276 dst += dst_wrap - width;
1281 int avpicture_alloc(AVPicture *picture,
1282 enum PixelFormat pix_fmt, int width, int height)
1287 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1290 ptr = av_malloc(size);
1293 avpicture_fill(picture, ptr, pix_fmt, width, height);
1294 if(picture->data[1] && !picture->data[2])
1295 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1299 memset(picture, 0, sizeof(AVPicture));
1303 void avpicture_free(AVPicture *picture)
1305 av_free(picture->data[0]);
1308 /* return true if yuv planar */
1309 static inline int is_yuv_planar(const PixFmtInfo *ps)
1311 return (ps->color_type == FF_COLOR_YUV ||
1312 ps->color_type == FF_COLOR_YUV_JPEG) &&
1313 ps->pixel_type == FF_PIXEL_PLANAR;
1316 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1317 enum PixelFormat pix_fmt, int top_band, int left_band)
1322 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1325 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1326 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1328 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1329 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1330 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1332 dst->linesize[0] = src->linesize[0];
1333 dst->linesize[1] = src->linesize[1];
1334 dst->linesize[2] = src->linesize[2];
1338 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1339 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1348 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1349 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1351 for (i = 0; i < 3; i++) {
1352 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1353 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1355 if (padtop || padleft) {
1356 memset(dst->data[i], color[i],
1357 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1360 if (padleft || padright) {
1361 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1362 (dst->linesize[i] - (padright >> x_shift));
1363 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1364 for (y = 0; y < yheight; y++) {
1365 memset(optr, color[i], (padleft + padright) >> x_shift);
1366 optr += dst->linesize[i];
1370 if (src) { /* first line */
1371 uint8_t *iptr = src->data[i];
1372 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1373 (padleft >> x_shift);
1374 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1375 iptr += src->linesize[i];
1376 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1377 (dst->linesize[i] - (padright >> x_shift));
1378 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1379 for (y = 0; y < yheight; y++) {
1380 memset(optr, color[i], (padleft + padright) >> x_shift);
1381 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1382 (width - padleft - padright) >> x_shift);
1383 iptr += src->linesize[i];
1384 optr += dst->linesize[i];
1388 if (padbottom || padright) {
1389 optr = dst->data[i] + dst->linesize[i] *
1390 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1391 memset(optr, color[i],dst->linesize[i] *
1392 (padbottom >> y_shift) + (padright >> x_shift));
1398 /* NOTE: we scan all the pixels to have an exact information */
1399 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1401 const unsigned char *p;
1402 int src_wrap, ret, x, y;
1404 uint32_t *palette = (uint32_t *)src->data[1];
1407 src_wrap = src->linesize[0] - width;
1409 for(y=0;y<height;y++) {
1410 for(x=0;x<width;x++) {
1411 a = palette[p[0]] >> 24;
1413 ret |= FF_ALPHA_TRANSP;
1414 } else if (a != 0xff) {
1415 ret |= FF_ALPHA_SEMI_TRANSP;
1424 int img_get_alpha_info(const AVPicture *src,
1425 enum PixelFormat pix_fmt, int width, int height)
1427 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1430 /* no alpha can be represented in format */
1435 ret = get_alpha_info_pal8(src, width, height);
1438 /* we do not know, so everything is indicated */
1439 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1446 #define DEINT_INPLACE_LINE_LUM \
1447 movd_m2r(lum_m4[0],mm0);\
1448 movd_m2r(lum_m3[0],mm1);\
1449 movd_m2r(lum_m2[0],mm2);\
1450 movd_m2r(lum_m1[0],mm3);\
1451 movd_m2r(lum[0],mm4);\
1452 punpcklbw_r2r(mm7,mm0);\
1453 movd_r2m(mm2,lum_m4[0]);\
1454 punpcklbw_r2r(mm7,mm1);\
1455 punpcklbw_r2r(mm7,mm2);\
1456 punpcklbw_r2r(mm7,mm3);\
1457 punpcklbw_r2r(mm7,mm4);\
1458 paddw_r2r(mm3,mm1);\
1460 paddw_r2r(mm4,mm0);\
1462 paddw_r2r(mm6,mm2);\
1463 paddw_r2r(mm2,mm1);\
1464 psubusw_r2r(mm0,mm1);\
1466 packuswb_r2r(mm7,mm1);\
1467 movd_r2m(mm1,lum_m2[0]);
1469 #define DEINT_LINE_LUM \
1470 movd_m2r(lum_m4[0],mm0);\
1471 movd_m2r(lum_m3[0],mm1);\
1472 movd_m2r(lum_m2[0],mm2);\
1473 movd_m2r(lum_m1[0],mm3);\
1474 movd_m2r(lum[0],mm4);\
1475 punpcklbw_r2r(mm7,mm0);\
1476 punpcklbw_r2r(mm7,mm1);\
1477 punpcklbw_r2r(mm7,mm2);\
1478 punpcklbw_r2r(mm7,mm3);\
1479 punpcklbw_r2r(mm7,mm4);\
1480 paddw_r2r(mm3,mm1);\
1482 paddw_r2r(mm4,mm0);\
1484 paddw_r2r(mm6,mm2);\
1485 paddw_r2r(mm2,mm1);\
1486 psubusw_r2r(mm0,mm1);\
1488 packuswb_r2r(mm7,mm1);\
1489 movd_r2m(mm1,dst[0]);
1492 /* filter parameters: [-1 4 2 4 -1] // 8 */
1493 static void deinterlace_line(uint8_t *dst,
1494 const uint8_t *lum_m4, const uint8_t *lum_m3,
1495 const uint8_t *lum_m2, const uint8_t *lum_m1,
1500 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1503 for(;size > 0;size--) {
1505 sum += lum_m3[0] << 2;
1506 sum += lum_m2[0] << 1;
1507 sum += lum_m1[0] << 2;
1509 dst[0] = cm[(sum + 4) >> 3];
1521 movq_m2r(ff_pw_4,mm6);
1523 for (;size > 3; size-=4) {
1534 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1538 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1541 for(;size > 0;size--) {
1543 sum += lum_m3[0] << 2;
1544 sum += lum_m2[0] << 1;
1545 lum_m4[0]=lum_m2[0];
1546 sum += lum_m1[0] << 2;
1548 lum_m2[0] = cm[(sum + 4) >> 3];
1559 movq_m2r(ff_pw_4,mm6);
1561 for (;size > 3; size-=4) {
1562 DEINT_INPLACE_LINE_LUM
1572 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1573 top field is copied as is, but the bottom field is deinterlaced
1574 against the top field. */
1575 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1576 const uint8_t *src1, int src_wrap,
1577 int width, int height)
1579 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1584 src_0=&src_m1[src_wrap];
1585 src_p1=&src_0[src_wrap];
1586 src_p2=&src_p1[src_wrap];
1587 for(y=0;y<(height-2);y+=2) {
1588 memcpy(dst,src_m1,width);
1590 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1594 src_p1 += 2*src_wrap;
1595 src_p2 += 2*src_wrap;
1598 memcpy(dst,src_m1,width);
1601 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1604 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1605 int width, int height)
1607 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1610 buf = (uint8_t*)av_malloc(width);
1613 memcpy(buf,src_m1,width);
1614 src_0=&src_m1[src_wrap];
1615 src_p1=&src_0[src_wrap];
1616 src_p2=&src_p1[src_wrap];
1617 for(y=0;y<(height-2);y+=2) {
1618 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1621 src_p1 += 2*src_wrap;
1622 src_p2 += 2*src_wrap;
1625 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1629 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1630 enum PixelFormat pix_fmt, int width, int height)
1634 if (pix_fmt != PIX_FMT_YUV420P &&
1635 pix_fmt != PIX_FMT_YUV422P &&
1636 pix_fmt != PIX_FMT_YUV444P &&
1637 pix_fmt != PIX_FMT_YUV411P &&
1638 pix_fmt != PIX_FMT_GRAY8)
1640 if ((width & 3) != 0 || (height & 3) != 0)
1646 case PIX_FMT_YUV420P:
1650 case PIX_FMT_YUV422P:
1653 case PIX_FMT_YUV411P:
1659 if (pix_fmt == PIX_FMT_GRAY8) {
1664 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1667 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1668 src->data[i], src->linesize[i],