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- /*
- * Misc image conversion routines
- * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file
- * misc image conversion routines
- */
- /* TODO:
- * - write 'ffimg' program to test all the image related stuff
- * - move all api to slice based system
- * - integrate deinterlacing, postprocessing and scaling in the conversion process
- */
- #include "avcodec.h"
- #include "dsputil.h"
- #include "internal.h"
- #include "imgconvert.h"
- #include "libavutil/colorspace.h"
- #include "libavutil/common.h"
- #include "libavutil/pixdesc.h"
- #include "libavutil/imgutils.h"
- #if HAVE_MMX_EXTERNAL
- #include "x86/dsputil_mmx.h"
- #endif
- #define FF_COLOR_RGB 0 /**< RGB color space */
- #define FF_COLOR_GRAY 1 /**< gray color space */
- #define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
- #define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
- #if HAVE_MMX_EXTERNAL
- #define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
- #define deinterlace_line ff_deinterlace_line_mmx
- #else
- #define deinterlace_line_inplace deinterlace_line_inplace_c
- #define deinterlace_line deinterlace_line_c
- #endif
- #define pixdesc_has_alpha(pixdesc) \
- ((pixdesc)->nb_components == 2 || (pixdesc)->nb_components == 4 || (pixdesc)->flags & PIX_FMT_PAL)
- typedef struct PixFmtInfo {
- uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
- uint8_t padded_size; /**< padded size in bits if different from the non-padded size */
- } PixFmtInfo;
- /* this table gives more information about formats */
- static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
- /* YUV formats */
- [PIX_FMT_YUV420P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUYV422] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_UYVY422] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV410P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV411P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV440P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P9LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P9LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P9LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P9BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P9BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P9BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P10LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P10LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P10LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P10BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P10BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P10BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P12LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P12LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P12LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P12BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P12BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P12BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P14LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P14LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P14LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P14BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P14BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P14BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P16LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P16LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P16LE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV420P16BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV422P16BE] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUV444P16BE] = {
- .color_type = FF_COLOR_YUV,
- },
- /* YUV formats with alpha plane */
- [PIX_FMT_YUVA420P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUVA422P] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_YUVA444P] = {
- .color_type = FF_COLOR_YUV,
- },
- /* JPEG YUV */
- [PIX_FMT_YUVJ420P] = {
- .color_type = FF_COLOR_YUV_JPEG,
- },
- [PIX_FMT_YUVJ422P] = {
- .color_type = FF_COLOR_YUV_JPEG,
- },
- [PIX_FMT_YUVJ444P] = {
- .color_type = FF_COLOR_YUV_JPEG,
- },
- [PIX_FMT_YUVJ440P] = {
- .color_type = FF_COLOR_YUV_JPEG,
- },
- /* RGB formats */
- [PIX_FMT_RGB24] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGR24] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_ARGB] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGB48BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGB48LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGBA64BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGBA64LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGB565BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGB565LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGB555BE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_RGB555LE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_RGB444BE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_RGB444LE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- /* gray / mono formats */
- [PIX_FMT_GRAY16BE] = {
- .color_type = FF_COLOR_GRAY,
- },
- [PIX_FMT_GRAY16LE] = {
- .color_type = FF_COLOR_GRAY,
- },
- [PIX_FMT_GRAY8] = {
- .color_type = FF_COLOR_GRAY,
- },
- [PIX_FMT_GRAY8A] = {
- .color_type = FF_COLOR_GRAY,
- },
- [PIX_FMT_MONOWHITE] = {
- .color_type = FF_COLOR_GRAY,
- },
- [PIX_FMT_MONOBLACK] = {
- .color_type = FF_COLOR_GRAY,
- },
- /* paletted formats */
- [PIX_FMT_PAL8] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_UYYVYY411] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_ABGR] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGR48BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGR48LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGRA64BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGRA64LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGR565BE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_BGR565LE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_BGR555BE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_BGR555LE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_BGR444BE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_BGR444LE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 16,
- },
- [PIX_FMT_RGB8] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGB4] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGB4_BYTE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 8,
- },
- [PIX_FMT_BGR8] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGR4] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_BGR4_BYTE] = {
- .color_type = FF_COLOR_RGB,
- .padded_size = 8,
- },
- [PIX_FMT_NV12] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_NV21] = {
- .color_type = FF_COLOR_YUV,
- },
- [PIX_FMT_BGRA] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_RGBA] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP9BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP9LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP10BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP10LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP12BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP12LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP14BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP14LE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP16BE] = {
- .color_type = FF_COLOR_RGB,
- },
- [PIX_FMT_GBRP16LE] = {
- .color_type = FF_COLOR_RGB,
- },
- };
- void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
- {
- *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
- *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
- }
- int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
- {
- return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
- }
- int avpicture_fill(AVPicture *picture, uint8_t *ptr,
- enum PixelFormat pix_fmt, int width, int height)
- {
- return av_image_fill_arrays(picture->data, picture->linesize,
- ptr, pix_fmt, width, height, 1);
- }
- int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
- unsigned char *dest, int dest_size)
- {
- return av_image_copy_to_buffer(dest, dest_size,
- src->data, src->linesize,
- pix_fmt, width, height, 1);
- }
- int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
- {
- return av_image_get_buffer_size(pix_fmt, width, height, 1);
- }
- static int get_pix_fmt_depth(int *min, int *max, enum PixelFormat pix_fmt)
- {
- const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
- int i;
- if (!desc->nb_components) {
- *min = *max = 0;
- return AVERROR(EINVAL);
- }
- *min = INT_MAX, *max = -INT_MAX;
- for (i = 0; i < desc->nb_components; i++) {
- *min = FFMIN(desc->comp[i].depth_minus1+1, *min);
- *max = FFMAX(desc->comp[i].depth_minus1+1, *max);
- }
- return 0;
- }
- int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
- int has_alpha)
- {
- const PixFmtInfo *pf, *ps;
- const AVPixFmtDescriptor *src_desc;
- const AVPixFmtDescriptor *dst_desc;
- int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
- int ret, loss;
- if (dst_pix_fmt >= PIX_FMT_NB || dst_pix_fmt <= PIX_FMT_NONE)
- return ~0;
- src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
- dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
- ps = &pix_fmt_info[src_pix_fmt];
- /* compute loss */
- loss = 0;
- if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0)
- return ret;
- if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
- return ret;
- if (dst_min_depth < src_min_depth ||
- dst_max_depth < src_max_depth)
- loss |= FF_LOSS_DEPTH;
- if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
- dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
- loss |= FF_LOSS_RESOLUTION;
- pf = &pix_fmt_info[dst_pix_fmt];
- switch(pf->color_type) {
- case FF_COLOR_RGB:
- if (ps->color_type != FF_COLOR_RGB &&
- ps->color_type != FF_COLOR_GRAY)
- loss |= FF_LOSS_COLORSPACE;
- break;
- case FF_COLOR_GRAY:
- if (ps->color_type != FF_COLOR_GRAY)
- loss |= FF_LOSS_COLORSPACE;
- break;
- case FF_COLOR_YUV:
- if (ps->color_type != FF_COLOR_YUV)
- loss |= FF_LOSS_COLORSPACE;
- break;
- case FF_COLOR_YUV_JPEG:
- if (ps->color_type != FF_COLOR_YUV_JPEG &&
- ps->color_type != FF_COLOR_YUV &&
- ps->color_type != FF_COLOR_GRAY)
- loss |= FF_LOSS_COLORSPACE;
- break;
- default:
- /* fail safe test */
- if (ps->color_type != pf->color_type)
- loss |= FF_LOSS_COLORSPACE;
- break;
- }
- if (pf->color_type == FF_COLOR_GRAY &&
- ps->color_type != FF_COLOR_GRAY)
- loss |= FF_LOSS_CHROMA;
- if (!pixdesc_has_alpha(dst_desc) && (pixdesc_has_alpha(src_desc) && has_alpha))
- loss |= FF_LOSS_ALPHA;
- if (dst_pix_fmt == PIX_FMT_PAL8 &&
- (src_pix_fmt != PIX_FMT_PAL8 && (ps->color_type != FF_COLOR_GRAY || (pixdesc_has_alpha(src_desc) && has_alpha))))
- loss |= FF_LOSS_COLORQUANT;
- return loss;
- }
- static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
- {
- const PixFmtInfo *info = &pix_fmt_info[pix_fmt];
- const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
- return info->padded_size ?
- info->padded_size : av_get_bits_per_pixel(desc);
- }
- #if FF_API_FIND_BEST_PIX_FMT
- enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
- int has_alpha, int *loss_ptr)
- {
- enum PixelFormat dst_pix_fmt;
- int i;
- if (loss_ptr) /* all losses count (for backward compatibility) */
- *loss_ptr = 0;
- dst_pix_fmt = PIX_FMT_NONE; /* so first iteration doesn't have to be treated special */
- for(i = 0; i< FFMIN(PIX_FMT_NB, 64); i++){
- if (pix_fmt_mask & (1ULL << i))
- dst_pix_fmt = avcodec_find_best_pix_fmt2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
- }
- return dst_pix_fmt;
- }
- #endif /* FF_API_FIND_BEST_PIX_FMT */
- enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
- enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
- {
- enum PixelFormat dst_pix_fmt;
- int loss1, loss2, loss_order1, loss_order2, i, loss_mask;
- static const int loss_mask_order[] = {
- ~0, /* no loss first */
- ~FF_LOSS_ALPHA,
- ~FF_LOSS_RESOLUTION,
- ~FF_LOSS_COLORSPACE,
- ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
- ~FF_LOSS_COLORQUANT,
- ~FF_LOSS_DEPTH,
- ~(FF_LOSS_DEPTH|FF_LOSS_COLORSPACE),
- ~(FF_LOSS_RESOLUTION | FF_LOSS_DEPTH | FF_LOSS_COLORSPACE | FF_LOSS_ALPHA |
- FF_LOSS_COLORQUANT | FF_LOSS_CHROMA),
- 0x80000, //non zero entry that combines all loss variants including future additions
- 0,
- };
- loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */
- dst_pix_fmt = PIX_FMT_NONE;
- loss1 = avcodec_get_pix_fmt_loss(dst_pix_fmt1, src_pix_fmt, has_alpha) & loss_mask;
- loss2 = avcodec_get_pix_fmt_loss(dst_pix_fmt2, src_pix_fmt, has_alpha) & loss_mask;
- /* try with successive loss */
- for(i = 0;loss_mask_order[i] != 0 && dst_pix_fmt == PIX_FMT_NONE;i++) {
- loss_order1 = loss1 & loss_mask_order[i];
- loss_order2 = loss2 & loss_mask_order[i];
- if (loss_order1 == 0 && loss_order2 == 0){ /* use format with smallest depth */
- dst_pix_fmt = avg_bits_per_pixel(dst_pix_fmt2) < avg_bits_per_pixel(dst_pix_fmt1) ? dst_pix_fmt2 : dst_pix_fmt1;
- } else if (loss_order1 == 0 || loss_order2 == 0) { /* use format with no loss */
- dst_pix_fmt = loss_order2 ? dst_pix_fmt1 : dst_pix_fmt2;
- }
- }
- if (loss_ptr)
- *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
- return dst_pix_fmt;
- }
- enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_list,
- enum PixelFormat src_pix_fmt,
- int has_alpha, int *loss_ptr){
- int i;
- enum PixelFormat best = PIX_FMT_NONE;
- for(i=0; pix_fmt_list[i] != PIX_FMT_NONE; i++)
- best = avcodec_find_best_pix_fmt2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, loss_ptr);
- return best;
- }
- void av_picture_copy(AVPicture *dst, const AVPicture *src,
- enum PixelFormat pix_fmt, int width, int height)
- {
- av_image_copy(dst->data, dst->linesize, src->data,
- src->linesize, pix_fmt, width, height);
- }
- /* 2x2 -> 1x1 */
- void ff_shrink22(uint8_t *dst, int dst_wrap,
- const uint8_t *src, int src_wrap,
- int width, int height)
- {
- int w;
- const uint8_t *s1, *s2;
- uint8_t *d;
- for(;height > 0; height--) {
- s1 = src;
- s2 = s1 + src_wrap;
- d = dst;
- for(w = width;w >= 4; w-=4) {
- d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
- d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
- d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
- d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
- s1 += 8;
- s2 += 8;
- d += 4;
- }
- for(;w > 0; w--) {
- d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
- s1 += 2;
- s2 += 2;
- d++;
- }
- src += 2 * src_wrap;
- dst += dst_wrap;
- }
- }
- /* 4x4 -> 1x1 */
- void ff_shrink44(uint8_t *dst, int dst_wrap,
- const uint8_t *src, int src_wrap,
- int width, int height)
- {
- int w;
- const uint8_t *s1, *s2, *s3, *s4;
- uint8_t *d;
- for(;height > 0; height--) {
- s1 = src;
- s2 = s1 + src_wrap;
- s3 = s2 + src_wrap;
- s4 = s3 + src_wrap;
- d = dst;
- for(w = width;w > 0; w--) {
- d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
- s2[0] + s2[1] + s2[2] + s2[3] +
- s3[0] + s3[1] + s3[2] + s3[3] +
- s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
- s1 += 4;
- s2 += 4;
- s3 += 4;
- s4 += 4;
- d++;
- }
- src += 4 * src_wrap;
- dst += dst_wrap;
- }
- }
- /* 8x8 -> 1x1 */
- void ff_shrink88(uint8_t *dst, int dst_wrap,
- const uint8_t *src, int src_wrap,
- int width, int height)
- {
- int w, i;
- for(;height > 0; height--) {
- for(w = width;w > 0; w--) {
- int tmp=0;
- for(i=0; i<8; i++){
- tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
- src += src_wrap;
- }
- *(dst++) = (tmp + 32)>>6;
- src += 8 - 8*src_wrap;
- }
- src += 8*src_wrap - 8*width;
- dst += dst_wrap - width;
- }
- }
- int avpicture_alloc(AVPicture *picture,
- enum PixelFormat pix_fmt, int width, int height)
- {
- int ret;
- if ((ret = av_image_alloc(picture->data, picture->linesize, width, height, pix_fmt, 1)) < 0) {
- memset(picture, 0, sizeof(AVPicture));
- return ret;
- }
- return 0;
- }
- void avpicture_free(AVPicture *picture)
- {
- av_free(picture->data[0]);
- }
- /* return true if yuv planar */
- static inline int is_yuv_planar(enum PixelFormat fmt)
- {
- const PixFmtInfo *info = &pix_fmt_info[fmt];
- const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[fmt];
- int i;
- int planes[4] = { 0 };
- if (info->color_type != FF_COLOR_YUV &&
- info->color_type != FF_COLOR_YUV_JPEG)
- return 0;
- /* set the used planes */
- for (i = 0; i < desc->nb_components; i++)
- planes[desc->comp[i].plane] = 1;
- /* if there is an unused plane, the format is not planar */
- for (i = 0; i < desc->nb_components; i++)
- if (!planes[i])
- return 0;
- return 1;
- }
- int av_picture_crop(AVPicture *dst, const AVPicture *src,
- enum PixelFormat pix_fmt, int top_band, int left_band)
- {
- int y_shift;
- int x_shift;
- if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
- return -1;
- y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
- x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
- if (is_yuv_planar(pix_fmt)) {
- dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
- dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
- dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
- } else{
- if(top_band % (1<<y_shift) || left_band % (1<<x_shift))
- return -1;
- if(left_band) //FIXME add support for this too
- return -1;
- dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
- }
- dst->linesize[0] = src->linesize[0];
- dst->linesize[1] = src->linesize[1];
- dst->linesize[2] = src->linesize[2];
- return 0;
- }
- int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
- enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
- int *color)
- {
- uint8_t *optr;
- int y_shift;
- int x_shift;
- int yheight;
- int i, y;
- if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
- !is_yuv_planar(pix_fmt)) return -1;
- for (i = 0; i < 3; i++) {
- x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
- y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
- if (padtop || padleft) {
- memset(dst->data[i], color[i],
- dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
- }
- if (padleft || padright) {
- optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
- (dst->linesize[i] - (padright >> x_shift));
- yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
- for (y = 0; y < yheight; y++) {
- memset(optr, color[i], (padleft + padright) >> x_shift);
- optr += dst->linesize[i];
- }
- }
- if (src) { /* first line */
- uint8_t *iptr = src->data[i];
- optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
- (padleft >> x_shift);
- memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
- iptr += src->linesize[i];
- optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
- (dst->linesize[i] - (padright >> x_shift));
- yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
- for (y = 0; y < yheight; y++) {
- memset(optr, color[i], (padleft + padright) >> x_shift);
- memcpy(optr + ((padleft + padright) >> x_shift), iptr,
- (width - padleft - padright) >> x_shift);
- iptr += src->linesize[i];
- optr += dst->linesize[i];
- }
- }
- if (padbottom || padright) {
- optr = dst->data[i] + dst->linesize[i] *
- ((height - padbottom) >> y_shift) - (padright >> x_shift);
- memset(optr, color[i],dst->linesize[i] *
- (padbottom >> y_shift) + (padright >> x_shift));
- }
- }
- return 0;
- }
- #if !HAVE_MMX_EXTERNAL
- /* filter parameters: [-1 4 2 4 -1] // 8 */
- static void deinterlace_line_c(uint8_t *dst,
- const uint8_t *lum_m4, const uint8_t *lum_m3,
- const uint8_t *lum_m2, const uint8_t *lum_m1,
- const uint8_t *lum,
- int size)
- {
- uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
- int sum;
- for(;size > 0;size--) {
- sum = -lum_m4[0];
- sum += lum_m3[0] << 2;
- sum += lum_m2[0] << 1;
- sum += lum_m1[0] << 2;
- sum += -lum[0];
- dst[0] = cm[(sum + 4) >> 3];
- lum_m4++;
- lum_m3++;
- lum_m2++;
- lum_m1++;
- lum++;
- dst++;
- }
- }
- static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
- uint8_t *lum_m2, uint8_t *lum_m1,
- uint8_t *lum, int size)
- {
- uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
- int sum;
- for(;size > 0;size--) {
- sum = -lum_m4[0];
- sum += lum_m3[0] << 2;
- sum += lum_m2[0] << 1;
- lum_m4[0]=lum_m2[0];
- sum += lum_m1[0] << 2;
- sum += -lum[0];
- lum_m2[0] = cm[(sum + 4) >> 3];
- lum_m4++;
- lum_m3++;
- lum_m2++;
- lum_m1++;
- lum++;
- }
- }
- #endif /* !HAVE_MMX_EXTERNAL */
- /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
- top field is copied as is, but the bottom field is deinterlaced
- against the top field. */
- static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
- const uint8_t *src1, int src_wrap,
- int width, int height)
- {
- const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
- int y;
- src_m2 = src1;
- src_m1 = src1;
- src_0=&src_m1[src_wrap];
- src_p1=&src_0[src_wrap];
- src_p2=&src_p1[src_wrap];
- for(y=0;y<(height-2);y+=2) {
- memcpy(dst,src_m1,width);
- dst += dst_wrap;
- deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
- src_m2 = src_0;
- src_m1 = src_p1;
- src_0 = src_p2;
- src_p1 += 2*src_wrap;
- src_p2 += 2*src_wrap;
- dst += dst_wrap;
- }
- memcpy(dst,src_m1,width);
- dst += dst_wrap;
- /* do last line */
- deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
- }
- static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
- int width, int height)
- {
- uint8_t *src_m1, *src_0, *src_p1, *src_p2;
- int y;
- uint8_t *buf;
- buf = av_malloc(width);
- src_m1 = src1;
- memcpy(buf,src_m1,width);
- src_0=&src_m1[src_wrap];
- src_p1=&src_0[src_wrap];
- src_p2=&src_p1[src_wrap];
- for(y=0;y<(height-2);y+=2) {
- deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
- src_m1 = src_p1;
- src_0 = src_p2;
- src_p1 += 2*src_wrap;
- src_p2 += 2*src_wrap;
- }
- /* do last line */
- deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
- av_free(buf);
- }
- int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
- enum PixelFormat pix_fmt, int width, int height)
- {
- int i;
- if (pix_fmt != PIX_FMT_YUV420P &&
- pix_fmt != PIX_FMT_YUVJ420P &&
- pix_fmt != PIX_FMT_YUV422P &&
- pix_fmt != PIX_FMT_YUVJ422P &&
- pix_fmt != PIX_FMT_YUV444P &&
- pix_fmt != PIX_FMT_YUV411P &&
- pix_fmt != PIX_FMT_GRAY8)
- return -1;
- if ((width & 3) != 0 || (height & 3) != 0)
- return -1;
- for(i=0;i<3;i++) {
- if (i == 1) {
- switch(pix_fmt) {
- case PIX_FMT_YUVJ420P:
- case PIX_FMT_YUV420P:
- width >>= 1;
- height >>= 1;
- break;
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUVJ422P:
- width >>= 1;
- break;
- case PIX_FMT_YUV411P:
- width >>= 2;
- break;
- default:
- break;
- }
- if (pix_fmt == PIX_FMT_GRAY8) {
- break;
- }
- }
- if (src == dst) {
- deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
- width, height);
- } else {
- deinterlace_bottom_field(dst->data[i],dst->linesize[i],
- src->data[i], src->linesize[i],
- width, height);
- }
- }
- emms_c();
- return 0;
- }
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