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FFmpeg/libavcodec/imgconvert.c
Reimar Döffinger b435725b4c Do not set linesize for palette data, it does not make sense and creates 
problems with following patch to fix linesize alignment.

Originally committed as revision 18046 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-19 21:31:10 +00:00

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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 libavcodec/imgconvert.c
* 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 "colorspace.h"
#if HAVE_MMX
#include "x86/mmx.h"
#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 */
typedef struct PixFmtInfo {
const char *name;
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 is_hwaccel : 1; /**< true if this is an HW accelerated format */
uint8_t x_chroma_shift; /**< X chroma subsampling factor is 2 ^ shift */
uint8_t y_chroma_shift; /**< Y chroma subsampling factor is 2 ^ shift */
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] = {
.name = "yuv420p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_YUV422P] = {
.name = "yuv422p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV444P] = {
.name = "yuv444p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_YUYV422] = {
.name = "yuyv422",
.nb_channels = 1,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_UYVY422] = {
.name = "uyvy422",
.nb_channels = 1,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV410P] = {
.name = "yuv410p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 2,
},
[PIX_FMT_YUV411P] = {
.name = "yuv411p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 0,
},
[PIX_FMT_YUV440P] = {
.name = "yuv440p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 1,
},
/* YUV formats with alpha plane */
[PIX_FMT_YUVA420P] = {
.name = "yuva420p",
.nb_channels = 4,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
/* JPEG YUV */
[PIX_FMT_YUVJ420P] = {
.name = "yuvj420p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_YUVJ422P] = {
.name = "yuvj422p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUVJ444P] = {
.name = "yuvj444p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_YUVJ440P] = {
.name = "yuvj440p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 1,
},
/* RGB formats */
[PIX_FMT_RGB24] = {
.name = "rgb24",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR24] = {
.name = "bgr24",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB32] = {
.name = "rgb32",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB48BE] = {
.name = "rgb48be",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 16,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB48LE] = {
.name = "rgb48le",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 16,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB565] = {
.name = "rgb565",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB555] = {
.name = "rgb555",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
/* gray / mono formats */
[PIX_FMT_GRAY16BE] = {
.name = "gray16be",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 16,
},
[PIX_FMT_GRAY16LE] = {
.name = "gray16le",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 16,
},
[PIX_FMT_GRAY8] = {
.name = "gray",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
},
[PIX_FMT_MONOWHITE] = {
.name = "monow",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 1,
},
[PIX_FMT_MONOBLACK] = {
.name = "monob",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 1,
},
/* paletted formats */
[PIX_FMT_PAL8] = {
.name = "pal8",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PALETTE,
.depth = 8,
},
[PIX_FMT_XVMC_MPEG2_MC] = {
.name = "xvmcmc",
.is_hwaccel = 1,
},
[PIX_FMT_XVMC_MPEG2_IDCT] = {
.name = "xvmcidct",
.is_hwaccel = 1,
},
[PIX_FMT_VDPAU_MPEG1] = {
.name = "vdpau_mpeg1",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_VDPAU_MPEG2] = {
.name = "vdpau_mpeg2",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_VDPAU_H264] = {
.name = "vdpau_h264",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_VDPAU_WMV3] = {
.name = "vdpau_wmv3",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_VDPAU_VC1] = {
.name = "vdpau_vc1",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_UYYVYY411] = {
.name = "uyyvyy411",
.nb_channels = 1,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 0,
},
[PIX_FMT_BGR32] = {
.name = "bgr32",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR565] = {
.name = "bgr565",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR555] = {
.name = "bgr555",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB8] = {
.name = "rgb8",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB4] = {
.name = "rgb4",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 4,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB4_BYTE] = {
.name = "rgb4_byte",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR8] = {
.name = "bgr8",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR4] = {
.name = "bgr4",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 4,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR4_BYTE] = {
.name = "bgr4_byte",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_NV12] = {
.name = "nv12",
.nb_channels = 2,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_NV21] = {
.name = "nv12",
.nb_channels = 2,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_BGR32_1] = {
.name = "bgr32_1",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB32_1] = {
.name = "rgb32_1",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
/* VA API formats */
[PIX_FMT_VAAPI_MOCO] = {
.name = "vaapi_moco",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_VAAPI_IDCT] = {
.name = "vaapi_idct",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_VAAPI_VLD] = {
.name = "vaapi_vld",
.is_hwaccel = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
};
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
{
*h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
*v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
}
const char *avcodec_get_pix_fmt_name(int pix_fmt)
{
if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
return NULL;
else
return pix_fmt_info[pix_fmt].name;
}
enum PixelFormat avcodec_get_pix_fmt(const char* name)
{
int i;
for (i=0; i < PIX_FMT_NB; i++)
if (!strcmp(pix_fmt_info[i].name, name))
return i;
return PIX_FMT_NONE;
}
void avcodec_pix_fmt_string (char *buf, int buf_size, int pix_fmt)
{
/* print header */
if (pix_fmt < 0)
snprintf (buf, buf_size,
"name " " nb_channels" " depth" " is_alpha"
);
else{
PixFmtInfo info= pix_fmt_info[pix_fmt];
char is_alpha_char= info.is_alpha ? 'y' : 'n';
snprintf (buf, buf_size,
"%-10s" " %1d " " %2d " " %c ",
info.name,
info.nb_channels,
info.depth,
is_alpha_char
);
}
}
int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
{
return pix_fmt_info[pix_fmt].is_hwaccel;
}
int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
int i;
for(i=0; i<256; i++){
int r,g,b;
switch(pix_fmt) {
case PIX_FMT_RGB8:
r= (i>>5 )*36;
g= ((i>>2)&7)*36;
b= (i&3 )*85;
break;
case PIX_FMT_BGR8:
b= (i>>6 )*85;
g= ((i>>3)&7)*36;
r= (i&7 )*36;
break;
case PIX_FMT_RGB4_BYTE:
r= (i>>3 )*255;
g= ((i>>1)&3)*85;
b= (i&1 )*255;
break;
case PIX_FMT_BGR4_BYTE:
b= (i>>3 )*255;
g= ((i>>1)&3)*85;
r= (i&1 )*255;
break;
case PIX_FMT_GRAY8:
r=b=g= i;
break;
default:
return -1;
}
pal[i] = b + (g<<8) + (r<<16);
}
return 0;
}
int ff_fill_linesize(AVPicture *picture, int pix_fmt, int width)
{
int w2;
const PixFmtInfo *pinfo;
memset(picture->linesize, 0, sizeof(picture->linesize));
pinfo = &pix_fmt_info[pix_fmt];
switch(pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
case PIX_FMT_YUV440P:
case PIX_FMT_YUVJ420P:
case PIX_FMT_YUVJ422P:
case PIX_FMT_YUVJ444P:
case PIX_FMT_YUVJ440P:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
picture->linesize[0] = width;
picture->linesize[1] = w2;
picture->linesize[2] = w2;
break;
case PIX_FMT_YUVA420P:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
picture->linesize[0] = width;
picture->linesize[1] = w2;
picture->linesize[2] = w2;
picture->linesize[3] = width;
break;
case PIX_FMT_NV12:
case PIX_FMT_NV21:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
picture->linesize[0] = width;
picture->linesize[1] = w2;
break;
case PIX_FMT_RGB24:
case PIX_FMT_BGR24:
picture->linesize[0] = width * 3;
break;
case PIX_FMT_RGB32:
case PIX_FMT_BGR32:
case PIX_FMT_RGB32_1:
case PIX_FMT_BGR32_1:
picture->linesize[0] = width * 4;
break;
case PIX_FMT_RGB48BE:
case PIX_FMT_RGB48LE:
picture->linesize[0] = width * 6;
break;
case PIX_FMT_GRAY16BE:
case PIX_FMT_GRAY16LE:
case PIX_FMT_BGR555:
case PIX_FMT_BGR565:
case PIX_FMT_RGB555:
case PIX_FMT_RGB565:
case PIX_FMT_YUYV422:
picture->linesize[0] = width * 2;
break;
case PIX_FMT_UYVY422:
picture->linesize[0] = width * 2;
break;
case PIX_FMT_UYYVYY411:
picture->linesize[0] = width + width/2;
break;
case PIX_FMT_RGB4:
case PIX_FMT_BGR4:
picture->linesize[0] = width / 2;
break;
case PIX_FMT_MONOWHITE:
case PIX_FMT_MONOBLACK:
picture->linesize[0] = (width + 7) >> 3;
break;
case PIX_FMT_PAL8:
case PIX_FMT_RGB8:
case PIX_FMT_BGR8:
case PIX_FMT_RGB4_BYTE:
case PIX_FMT_BGR4_BYTE:
case PIX_FMT_GRAY8:
picture->linesize[0] = width;
break;
default:
return -1;
}
return 0;
}
int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, int pix_fmt,
int height)
{
int size, h2, size2;
const PixFmtInfo *pinfo;
pinfo = &pix_fmt_info[pix_fmt];
size = picture->linesize[0] * height;
switch(pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
case PIX_FMT_YUV440P:
case PIX_FMT_YUVJ420P:
case PIX_FMT_YUVJ422P:
case PIX_FMT_YUVJ444P:
case PIX_FMT_YUVJ440P:
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = picture->linesize[1] * h2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = picture->data[1] + size2;
picture->data[3] = NULL;
return size + 2 * size2;
case PIX_FMT_YUVA420P:
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = picture->linesize[1] * h2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = picture->data[1] + size2;
picture->data[3] = picture->data[1] + size2 + size2;
return 2 * size + 2 * size2;
case PIX_FMT_NV12:
case PIX_FMT_NV21:
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = picture->linesize[1] * h2 * 2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = NULL;
picture->data[3] = NULL;
return size + 2 * size2;
case PIX_FMT_RGB24:
case PIX_FMT_BGR24:
case PIX_FMT_RGB32:
case PIX_FMT_BGR32:
case PIX_FMT_RGB32_1:
case PIX_FMT_BGR32_1:
case PIX_FMT_RGB48BE:
case PIX_FMT_RGB48LE:
case PIX_FMT_GRAY16BE:
case PIX_FMT_GRAY16LE:
case PIX_FMT_BGR555:
case PIX_FMT_BGR565:
case PIX_FMT_RGB555:
case PIX_FMT_RGB565:
case PIX_FMT_YUYV422:
case PIX_FMT_UYVY422:
case PIX_FMT_UYYVYY411:
case PIX_FMT_RGB4:
case PIX_FMT_BGR4:
case PIX_FMT_MONOWHITE:
case PIX_FMT_MONOBLACK:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
return size;
case PIX_FMT_PAL8:
case PIX_FMT_RGB8:
case PIX_FMT_BGR8:
case PIX_FMT_RGB4_BYTE:
case PIX_FMT_BGR4_BYTE:
case PIX_FMT_GRAY8:
size2 = (size + 3) & ~3;
picture->data[0] = ptr;
picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
picture->data[2] = NULL;
picture->data[3] = NULL;
return size2 + 256 * 4;
default:
picture->data[0] = NULL;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
return -1;
}
}
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height)
{
if(avcodec_check_dimensions(NULL, width, height))
return -1;
if (ff_fill_linesize(picture, pix_fmt, width))
return -1;
return ff_fill_pointer(picture, ptr, pix_fmt, height);
}
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
unsigned char *dest, int dest_size)
{
const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
int i, j, w, ow, h, oh, data_planes;
const unsigned char* s;
int size = avpicture_get_size(pix_fmt, width, height);
if (size > dest_size || size < 0)
return -1;
if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
if (pix_fmt == PIX_FMT_YUYV422 ||
pix_fmt == PIX_FMT_UYVY422 ||
pix_fmt == PIX_FMT_BGR565 ||
pix_fmt == PIX_FMT_BGR555 ||
pix_fmt == PIX_FMT_RGB565 ||
pix_fmt == PIX_FMT_RGB555)
w = width * 2;
else if (pix_fmt == PIX_FMT_UYYVYY411)
w = width + width/2;
else if (pix_fmt == PIX_FMT_PAL8)
w = width;
else
w = width * (pf->depth * pf->nb_channels / 8);
data_planes = 1;
h = height;
} else {
data_planes = pf->nb_channels;
w = (width*pf->depth + 7)/8;
h = height;
}
ow = w;
oh = h;
for (i=0; i<data_planes; i++) {
if (i == 1) {
w = width >> pf->x_chroma_shift;
h = height >> pf->y_chroma_shift;
} else if (i == 3) {
w = ow;
h = oh;
}
s = src->data[i];
for(j=0; j<h; j++) {
memcpy(dest, s, w);
dest += w;
s += src->linesize[i];
}
}
if (pf->pixel_type == FF_PIXEL_PALETTE)
memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
return size;
}
int avpicture_get_size(int pix_fmt, int width, int height)
{
AVPicture dummy_pict;
return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
}
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
int has_alpha)
{
const PixFmtInfo *pf, *ps;
int loss;
ps = &pix_fmt_info[src_pix_fmt];
pf = &pix_fmt_info[dst_pix_fmt];
/* compute loss */
loss = 0;
pf = &pix_fmt_info[dst_pix_fmt];
if (pf->depth < ps->depth ||
(dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
loss |= FF_LOSS_DEPTH;
if (pf->x_chroma_shift > ps->x_chroma_shift ||
pf->y_chroma_shift > ps->y_chroma_shift)
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(int pix_fmt)
{
int bits;
const PixFmtInfo *pf;
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_RGB565:
case PIX_FMT_RGB555:
case PIX_FMT_BGR565:
case PIX_FMT_BGR555:
bits = 16;
break;
case PIX_FMT_UYYVYY411:
bits = 12;
break;
default:
bits = pf->depth * pf->nb_channels;
break;
}
break;
case FF_PIXEL_PLANAR:
if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
bits = pf->depth * pf->nb_channels;
} else {
bits = pf->depth + ((2 * pf->depth) >>
(pf->x_chroma_shift + pf->y_chroma_shift));
}
break;
case FF_PIXEL_PALETTE:
bits = 8;
break;
default:
bits = -1;
break;
}
return bits;
}
static int avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
int src_pix_fmt,
int has_alpha,
int loss_mask)
{
int dist, i, loss, min_dist, dst_pix_fmt;
/* find exact color match with smallest size */
dst_pix_fmt = -1;
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;
}
int avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, int src_pix_fmt,
int has_alpha, int *loss_ptr)
{
int dst_pix_fmt, 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 -1;
found:
if (loss_ptr)
*loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
return dst_pix_fmt;
}
void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
const uint8_t *src, int src_wrap,
int width, int height)
{
if((!dst) || (!src))
return;
for(;height > 0; height--) {
memcpy(dst, src, width);
dst += dst_wrap;
src += src_wrap;
}
}
int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
{
int bits;
const PixFmtInfo *pf = &pix_fmt_info[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_RGB565:
case PIX_FMT_RGB555:
case PIX_FMT_BGR565:
case PIX_FMT_BGR555:
bits = 16;
break;
case PIX_FMT_UYYVYY411:
bits = 12;
break;
default:
bits = pf->depth * pf->nb_channels;
break;
}
return (width * bits + 7) >> 3;
break;
case FF_PIXEL_PLANAR:
if (plane == 1 || plane == 2)
width= -((-width)>>pf->x_chroma_shift);
return (width * pf->depth + 7) >> 3;
break;
case FF_PIXEL_PALETTE:
if (plane == 0)
return width;
break;
}
return -1;
}
void av_picture_copy(AVPicture *dst, const AVPicture *src,
int pix_fmt, int width, int height)
{
int i;
const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
pf = &pix_fmt_info[pix_fmt];
switch(pf->pixel_type) {
case FF_PIXEL_PACKED:
case FF_PIXEL_PLANAR:
for(i = 0; i < pf->nb_channels; i++) {
int h;
int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
h = height;
if (i == 1 || i == 2) {
h= -((-height)>>pf->y_chroma_shift);
}
ff_img_copy_plane(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
bwidth, h);
}
break;
case FF_PIXEL_PALETTE:
ff_img_copy_plane(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
width, height);
/* copy the palette */
ff_img_copy_plane(dst->data[1], dst->linesize[1],
src->data[1], src->linesize[1],
4, 256);
break;
}
}
/* 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,
int pix_fmt, int width, int height)
{
int size;
void *ptr;
size = avpicture_get_size(pix_fmt, width, height);
if(size<0)
goto fail;
ptr = av_malloc(size);
if (!ptr)
goto fail;
avpicture_fill(picture, ptr, pix_fmt, width, height);
if(picture->data[1] && !picture->data[2])
ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
return 0;
fail:
memset(picture, 0, sizeof(AVPicture));
return -1;
}
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,
int pix_fmt, int top_band, int left_band)
{
int y_shift;
int x_shift;
if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
return -1;
y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
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);
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,
int 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 ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 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,
int pix_fmt, int width, int height)
{
const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
int ret;
pf = &pix_fmt_info[pix_fmt];
/* 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
#define DEINT_INPLACE_LINE_LUM \
movd_m2r(lum_m4[0],mm0);\
movd_m2r(lum_m3[0],mm1);\
movd_m2r(lum_m2[0],mm2);\
movd_m2r(lum_m1[0],mm3);\
movd_m2r(lum[0],mm4);\
punpcklbw_r2r(mm7,mm0);\
movd_r2m(mm2,lum_m4[0]);\
punpcklbw_r2r(mm7,mm1);\
punpcklbw_r2r(mm7,mm2);\
punpcklbw_r2r(mm7,mm3);\
punpcklbw_r2r(mm7,mm4);\
paddw_r2r(mm3,mm1);\
psllw_i2r(1,mm2);\
paddw_r2r(mm4,mm0);\
psllw_i2r(2,mm1);\
paddw_r2r(mm6,mm2);\
paddw_r2r(mm2,mm1);\
psubusw_r2r(mm0,mm1);\
psrlw_i2r(3,mm1);\
packuswb_r2r(mm7,mm1);\
movd_r2m(mm1,lum_m2[0]);
#define DEINT_LINE_LUM \
movd_m2r(lum_m4[0],mm0);\
movd_m2r(lum_m3[0],mm1);\
movd_m2r(lum_m2[0],mm2);\
movd_m2r(lum_m1[0],mm3);\
movd_m2r(lum[0],mm4);\
punpcklbw_r2r(mm7,mm0);\
punpcklbw_r2r(mm7,mm1);\
punpcklbw_r2r(mm7,mm2);\
punpcklbw_r2r(mm7,mm3);\
punpcklbw_r2r(mm7,mm4);\
paddw_r2r(mm3,mm1);\
psllw_i2r(1,mm2);\
paddw_r2r(mm4,mm0);\
psllw_i2r(2,mm1);\
paddw_r2r(mm6,mm2);\
paddw_r2r(mm2,mm1);\
psubusw_r2r(mm0,mm1);\
psrlw_i2r(3,mm1);\
packuswb_r2r(mm7,mm1);\
movd_r2m(mm1,dst[0]);
#endif
/* filter parameters: [-1 4 2 4 -1] // 8 */
static void deinterlace_line(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)
{
#if !HAVE_MMX
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++;
}
#else
{
pxor_r2r(mm7,mm7);
movq_m2r(ff_pw_4,mm6);
}
for (;size > 3; size-=4) {
DEINT_LINE_LUM
lum_m4+=4;
lum_m3+=4;
lum_m2+=4;
lum_m1+=4;
lum+=4;
dst+=4;
}
#endif
}
static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
int size)
{
#if !HAVE_MMX
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++;
}
#else
{
pxor_r2r(mm7,mm7);
movq_m2r(ff_pw_4,mm6);
}
for (;size > 3; size-=4) {
DEINT_INPLACE_LINE_LUM
lum_m4+=4;
lum_m3+=4;
lum_m2+=4;
lum_m1+=4;
lum+=4;
}
#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,
int pix_fmt, int width, int height)
{
int i;
if (pix_fmt != PIX_FMT_YUV420P &&
pix_fmt != PIX_FMT_YUV422P &&
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_YUV420P:
width >>= 1;
height >>= 1;
break;
case PIX_FMT_YUV422P:
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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