| /* |
| * 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/pixdesc.h" |
| #include "libavutil/imgutils.h" |
| |
| #if HAVE_MMX && HAVE_YASM |
| #include "x86/dsputil_mmx.h" |
| #endif |
| |
| #define xglue(x, y) x ## y |
| #define glue(x, y) xglue(x, y) |
| |
| #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 */ |
| |
| #define FF_PIXEL_PLANAR 0 /**< each channel has one component in AVPicture */ |
| #define FF_PIXEL_PACKED 1 /**< only one components containing all the channels */ |
| #define FF_PIXEL_PALETTE 2 /**< one components containing indexes for a palette */ |
| |
| #if HAVE_MMX && HAVE_YASM |
| #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 |
| |
| typedef struct PixFmtInfo { |
| uint8_t nb_channels; /**< number of channels (including alpha) */ |
| uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */ |
| uint8_t pixel_type; /**< pixel storage type (see FF_PIXEL_xxx constants) */ |
| uint8_t is_alpha : 1; /**< true if alpha can be specified */ |
| uint8_t depth; /**< bit depth of the color components */ |
| } PixFmtInfo; |
| |
| /* this table gives more information about formats */ |
| static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = { |
| /* YUV formats */ |
| [PIX_FMT_YUV420P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUV422P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUV444P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUYV422] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_UYVY422] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUV410P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUV411P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUV440P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUV420P16LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| [PIX_FMT_YUV422P16LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| [PIX_FMT_YUV444P16LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| [PIX_FMT_YUV420P16BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| [PIX_FMT_YUV422P16BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| [PIX_FMT_YUV444P16BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| |
| |
| /* YUV formats with alpha plane */ |
| [PIX_FMT_YUVA420P] = { |
| .nb_channels = 4, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| |
| /* JPEG YUV */ |
| [PIX_FMT_YUVJ420P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV_JPEG, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUVJ422P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV_JPEG, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUVJ444P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV_JPEG, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_YUVJ440P] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_YUV_JPEG, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| |
| /* RGB formats */ |
| [PIX_FMT_RGB24] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_BGR24] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_ARGB] = { |
| .nb_channels = 4, .is_alpha = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_RGB48BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 16, |
| }, |
| [PIX_FMT_RGB48LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 16, |
| }, |
| [PIX_FMT_RGB565BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_RGB565LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_RGB555BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_RGB555LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_RGB444BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 4, |
| }, |
| [PIX_FMT_RGB444LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 4, |
| }, |
| |
| /* gray / mono formats */ |
| [PIX_FMT_GRAY16BE] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_GRAY, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| [PIX_FMT_GRAY16LE] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_GRAY, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 16, |
| }, |
| [PIX_FMT_GRAY8] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_GRAY, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_MONOWHITE] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_GRAY, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 1, |
| }, |
| [PIX_FMT_MONOBLACK] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_GRAY, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 1, |
| }, |
| |
| /* paletted formats */ |
| [PIX_FMT_PAL8] = { |
| .nb_channels = 4, .is_alpha = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PALETTE, |
| .depth = 8, |
| }, |
| [PIX_FMT_UYYVYY411] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_ABGR] = { |
| .nb_channels = 4, .is_alpha = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_BGR565BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_BGR565LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_BGR555BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_BGR555LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 5, |
| }, |
| [PIX_FMT_BGR444BE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 4, |
| }, |
| [PIX_FMT_BGR444LE] = { |
| .nb_channels = 3, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 4, |
| }, |
| [PIX_FMT_RGB8] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_RGB4] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 4, |
| }, |
| [PIX_FMT_RGB4_BYTE] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_BGR8] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_BGR4] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 4, |
| }, |
| [PIX_FMT_BGR4_BYTE] = { |
| .nb_channels = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_NV12] = { |
| .nb_channels = 2, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| [PIX_FMT_NV21] = { |
| .nb_channels = 2, |
| .color_type = FF_COLOR_YUV, |
| .pixel_type = FF_PIXEL_PLANAR, |
| .depth = 8, |
| }, |
| |
| [PIX_FMT_BGRA] = { |
| .nb_channels = 4, .is_alpha = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| [PIX_FMT_RGBA] = { |
| .nb_channels = 4, .is_alpha = 1, |
| .color_type = FF_COLOR_RGB, |
| .pixel_type = FF_PIXEL_PACKED, |
| .depth = 8, |
| }, |
| }; |
| |
| 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; |
| } |
| |
| #if FF_API_GET_PIX_FMT_NAME |
| const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt) |
| { |
| return av_get_pix_fmt_name(pix_fmt); |
| } |
| #endif |
| |
| #if LIBAVCODEC_VERSION_MAJOR < 53 |
| enum PixelFormat avcodec_get_pix_fmt(const char *name) |
| { |
| return av_get_pix_fmt(name); |
| } |
| |
| void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt) |
| { |
| av_get_pix_fmt_string(buf, buf_size, pix_fmt); |
| } |
| #endif |
| |
| int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt) |
| { |
| return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL; |
| } |
| |
| #if LIBAVCODEC_VERSION_MAJOR < 53 |
| int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){ |
| return ff_set_systematic_pal2(pal, pix_fmt); |
| } |
| |
| int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width) |
| { |
| return av_image_fill_linesizes(picture->linesize, pix_fmt, width); |
| } |
| |
| int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, |
| int height) |
| { |
| return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize); |
| } |
| #endif |
| |
| int avpicture_fill(AVPicture *picture, uint8_t *ptr, |
| enum PixelFormat pix_fmt, int width, int height) |
| { |
| int ret; |
| |
| if ((ret = av_image_check_size(width, height, 0, NULL)) < 0) |
| return ret; |
| |
| if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0) |
| return ret; |
| |
| return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize); |
| } |
| |
| int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height, |
| unsigned char *dest, int dest_size) |
| { |
| int i, j, nb_planes = 0, linesizes[4]; |
| const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; |
| int size = avpicture_get_size(pix_fmt, width, height); |
| |
| if (size > dest_size || size < 0) |
| return AVERROR(EINVAL); |
| |
| for (i = 0; i < desc->nb_components; i++) |
| nb_planes = FFMAX(desc->comp[i].plane, nb_planes); |
| nb_planes++; |
| |
| av_image_fill_linesizes(linesizes, pix_fmt, width); |
| for (i = 0; i < nb_planes; i++) { |
| int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0; |
| const unsigned char *s = src->data[i]; |
| h = (height + (1 << shift) - 1) >> shift; |
| |
| for (j = 0; j < h; j++) { |
| memcpy(dest, s, linesizes[i]); |
| dest += linesizes[i]; |
| s += src->linesize[i]; |
| } |
| } |
| |
| if (desc->flags & PIX_FMT_PAL) |
| memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4); |
| |
| return size; |
| } |
| |
| int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height) |
| { |
| AVPicture dummy_pict; |
| if(av_image_check_size(width, height, 0, NULL)) |
| return -1; |
| switch (pix_fmt) { |
| case PIX_FMT_RGB8: |
| case PIX_FMT_BGR8: |
| case PIX_FMT_RGB4_BYTE: |
| case PIX_FMT_BGR4_BYTE: |
| case PIX_FMT_GRAY8: |
| // do not include palette for these pseudo-paletted formats |
| return width * height; |
| } |
| return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height); |
| } |
| |
| 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 = &av_pix_fmt_descriptors[src_pix_fmt]; |
| const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt]; |
| int loss; |
| |
| ps = &pix_fmt_info[src_pix_fmt]; |
| |
| /* compute loss */ |
| loss = 0; |
| pf = &pix_fmt_info[dst_pix_fmt]; |
| if (pf->depth < ps->depth || |
| ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE || |
| dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) && |
| (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE || |
| src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE))) |
| 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; |
| 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 (!pf->is_alpha && (ps->is_alpha && has_alpha)) |
| loss |= FF_LOSS_ALPHA; |
| if (pf->pixel_type == FF_PIXEL_PALETTE && |
| (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY)) |
| loss |= FF_LOSS_COLORQUANT; |
| return loss; |
| } |
| |
| static int avg_bits_per_pixel(enum PixelFormat pix_fmt) |
| { |
| int bits; |
| const PixFmtInfo *pf; |
| const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; |
| |
| pf = &pix_fmt_info[pix_fmt]; |
| switch(pf->pixel_type) { |
| case FF_PIXEL_PACKED: |
| switch(pix_fmt) { |
| case PIX_FMT_YUYV422: |
| case PIX_FMT_UYVY422: |
| case PIX_FMT_RGB565BE: |
| case PIX_FMT_RGB565LE: |
| case PIX_FMT_RGB555BE: |
| case PIX_FMT_RGB555LE: |
| case PIX_FMT_RGB444BE: |
| case PIX_FMT_RGB444LE: |
| case PIX_FMT_BGR565BE: |
| case PIX_FMT_BGR565LE: |
| case PIX_FMT_BGR555BE: |
| case PIX_FMT_BGR555LE: |
| case PIX_FMT_BGR444BE: |
| case PIX_FMT_BGR444LE: |
| bits = 16; |
| break; |
| case PIX_FMT_UYYVYY411: |
| bits = 12; |
| break; |
| default: |
| bits = pf->depth * pf->nb_channels; |
| break; |
| } |
| break; |
| case FF_PIXEL_PLANAR: |
| if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) { |
| bits = pf->depth * pf->nb_channels; |
| } else { |
| bits = pf->depth + ((2 * pf->depth) >> |
| (desc->log2_chroma_w + desc->log2_chroma_h)); |
| } |
| break; |
| case FF_PIXEL_PALETTE: |
| bits = 8; |
| break; |
| default: |
| bits = -1; |
| break; |
| } |
| return bits; |
| } |
| |
| static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask, |
| enum PixelFormat src_pix_fmt, |
| int has_alpha, |
| int loss_mask) |
| { |
| int dist, i, loss, min_dist; |
| enum PixelFormat dst_pix_fmt; |
| |
| /* find exact color match with smallest size */ |
| dst_pix_fmt = PIX_FMT_NONE; |
| min_dist = 0x7fffffff; |
| for(i = 0;i < PIX_FMT_NB; i++) { |
| if (pix_fmt_mask & (1ULL << i)) { |
| loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask; |
| if (loss == 0) { |
| dist = avg_bits_per_pixel(i); |
| if (dist < min_dist) { |
| min_dist = dist; |
| dst_pix_fmt = i; |
| } |
| } |
| } |
| } |
| return dst_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 loss_mask, i; |
| static const int loss_mask_order[] = { |
| ~0, /* no loss first */ |
| ~FF_LOSS_ALPHA, |
| ~FF_LOSS_RESOLUTION, |
| ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION), |
| ~FF_LOSS_COLORQUANT, |
| ~FF_LOSS_DEPTH, |
| 0, |
| }; |
| |
| /* try with successive loss */ |
| i = 0; |
| for(;;) { |
| loss_mask = loss_mask_order[i++]; |
| dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt, |
| has_alpha, loss_mask); |
| if (dst_pix_fmt >= 0) |
| goto found; |
| if (loss_mask == 0) |
| break; |
| } |
| return PIX_FMT_NONE; |
| found: |
| if (loss_ptr) |
| *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha); |
| return dst_pix_fmt; |
| } |
| |
| #if LIBAVCODEC_VERSION_MAJOR < 53 |
| void ff_img_copy_plane(uint8_t *dst, int dst_wrap, |
| const uint8_t *src, int src_wrap, |
| int width, int height) |
| { |
| av_image_copy_plane(dst, dst_wrap, src, src_wrap, width, height); |
| } |
| |
| int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane) |
| { |
| return av_image_get_linesize(pix_fmt, width, plane); |
| } |
| |
| void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4], |
| uint8_t *src_data[4], int src_linesize[4], |
| enum PixelFormat pix_fmt, int width, int height) |
| { |
| av_image_copy(dst_data, dst_linesize, src_data, src_linesize, |
| pix_fmt, width, height); |
| } |
| #endif |
| |
| 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(const PixFmtInfo *ps) |
| { |
| return (ps->color_type == FF_COLOR_YUV || |
| ps->color_type == FF_COLOR_YUV_JPEG) && |
| ps->pixel_type == FF_PIXEL_PLANAR; |
| } |
| |
| 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_info[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_info[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; |
| } |
| |
| /* NOTE: we scan all the pixels to have an exact information */ |
| static int get_alpha_info_pal8(const AVPicture *src, int width, int height) |
| { |
| const unsigned char *p; |
| int src_wrap, ret, x, y; |
| unsigned int a; |
| uint32_t *palette = (uint32_t *)src->data[1]; |
| |
| p = src->data[0]; |
| src_wrap = src->linesize[0] - width; |
| ret = 0; |
| for(y=0;y<height;y++) { |
| for(x=0;x<width;x++) { |
| a = palette[p[0]] >> 24; |
| if (a == 0x00) { |
| ret |= FF_ALPHA_TRANSP; |
| } else if (a != 0xff) { |
| ret |= FF_ALPHA_SEMI_TRANSP; |
| } |
| p++; |
| } |
| p += src_wrap; |
| } |
| return ret; |
| } |
| |
| int img_get_alpha_info(const AVPicture *src, |
| enum PixelFormat pix_fmt, int width, int height) |
| { |
| const PixFmtInfo *pf = &pix_fmt_info[pix_fmt]; |
| int ret; |
| |
| /* no alpha can be represented in format */ |
| if (!pf->is_alpha) |
| return 0; |
| switch(pix_fmt) { |
| case PIX_FMT_PAL8: |
| ret = get_alpha_info_pal8(src, width, height); |
| break; |
| default: |
| /* we do not know, so everything is indicated */ |
| ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP; |
| break; |
| } |
| return ret; |
| } |
| |
| #if !(HAVE_MMX && HAVE_YASM) |
| /* 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 |
| |
| /* 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 = (uint8_t*)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; |
| } |
| |