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mpv/libmpcodecs/mp_image.c

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "libmpcodecs/img_format.h"
#include "libmpcodecs/mp_image.h"
#include "libvo/fastmemcpy.h"
#include "libavutil/mem.h"
void mp_image_alloc_planes(mp_image_t *mpi) {
// IF09 - allocate space for 4. plane delta info - unused
if (mpi->imgfmt == IMGFMT_IF09) {
mpi->planes[0]=av_malloc(mpi->bpp*mpi->width*(mpi->height+2)/8+
mpi->chroma_width*mpi->chroma_height);
} else
mpi->planes[0]=av_malloc(mpi->bpp*mpi->width*(mpi->height+2)/8);
if (mpi->flags&MP_IMGFLAG_PLANAR) {
int bpp = IMGFMT_IS_YUVP16(mpi->imgfmt)? 2 : 1;
// YV12/I420/YVU9/IF09. feel free to add other planar formats here...
mpi->stride[0]=mpi->stride[3]=bpp*mpi->width;
if(mpi->num_planes > 2){
mpi->stride[1]=mpi->stride[2]=bpp*mpi->chroma_width;
if(mpi->flags&MP_IMGFLAG_SWAPPED){
// I420/IYUV (Y,U,V)
mpi->planes[1]=mpi->planes[0]+mpi->stride[0]*mpi->height;
mpi->planes[2]=mpi->planes[1]+mpi->stride[1]*mpi->chroma_height;
if (mpi->num_planes > 3)
mpi->planes[3]=mpi->planes[2]+mpi->stride[2]*mpi->chroma_height;
} else {
// YV12,YVU9,IF09 (Y,V,U)
mpi->planes[2]=mpi->planes[0]+mpi->stride[0]*mpi->height;
mpi->planes[1]=mpi->planes[2]+mpi->stride[1]*mpi->chroma_height;
if (mpi->num_planes > 3)
mpi->planes[3]=mpi->planes[1]+mpi->stride[1]*mpi->chroma_height;
}
} else {
// NV12/NV21
mpi->stride[1]=mpi->chroma_width;
mpi->planes[1]=mpi->planes[0]+mpi->stride[0]*mpi->height;
}
} else {
mpi->stride[0]=mpi->width*mpi->bpp/8;
if (mpi->flags & MP_IMGFLAG_RGB_PALETTE)
mpi->planes[1] = av_malloc(1024);
}
mpi->flags|=MP_IMGFLAG_ALLOCATED;
}
mp_image_t* alloc_mpi(int w, int h, unsigned long int fmt) {
mp_image_t* mpi = new_mp_image(w,h);
mp_image_setfmt(mpi,fmt);
mp_image_alloc_planes(mpi);
return mpi;
}
void copy_mpi(mp_image_t *dmpi, mp_image_t *mpi) {
if(mpi->flags&MP_IMGFLAG_PLANAR){
memcpy_pic(dmpi->planes[0],mpi->planes[0], mpi->w, mpi->h,
dmpi->stride[0],mpi->stride[0]);
memcpy_pic(dmpi->planes[1],mpi->planes[1], mpi->chroma_width, mpi->chroma_height,
dmpi->stride[1],mpi->stride[1]);
memcpy_pic(dmpi->planes[2], mpi->planes[2], mpi->chroma_width, mpi->chroma_height,
dmpi->stride[2],mpi->stride[2]);
} else {
memcpy_pic(dmpi->planes[0],mpi->planes[0],
mpi->w*(dmpi->bpp/8), mpi->h,
dmpi->stride[0],mpi->stride[0]);
}
}
void mp_image_setfmt(mp_image_t* mpi,unsigned int out_fmt){
mpi->flags&=~(MP_IMGFLAG_PLANAR|MP_IMGFLAG_YUV|MP_IMGFLAG_SWAPPED);
mpi->imgfmt=out_fmt;
// compressed formats
if(out_fmt == IMGFMT_MPEGPES ||
out_fmt == IMGFMT_ZRMJPEGNI || out_fmt == IMGFMT_ZRMJPEGIT || out_fmt == IMGFMT_ZRMJPEGIB ||
IMGFMT_IS_HWACCEL(out_fmt)){
mpi->bpp=0;
return;
}
mpi->num_planes=1;
if (IMGFMT_IS_RGB(out_fmt)) {
if (IMGFMT_RGB_DEPTH(out_fmt) < 8 && !(out_fmt&128))
mpi->bpp = IMGFMT_RGB_DEPTH(out_fmt);
else
mpi->bpp=(IMGFMT_RGB_DEPTH(out_fmt)+7)&(~7);
return;
}
if (IMGFMT_IS_BGR(out_fmt)) {
if (IMGFMT_BGR_DEPTH(out_fmt) < 8 && !(out_fmt&128))
mpi->bpp = IMGFMT_BGR_DEPTH(out_fmt);
else
mpi->bpp=(IMGFMT_BGR_DEPTH(out_fmt)+7)&(~7);
mpi->flags|=MP_IMGFLAG_SWAPPED;
return;
}
mpi->flags|=MP_IMGFLAG_YUV;
mpi->num_planes=3;
if (mp_get_chroma_shift(out_fmt, NULL, NULL)) {
mpi->flags|=MP_IMGFLAG_PLANAR;
mpi->bpp = mp_get_chroma_shift(out_fmt, &mpi->chroma_x_shift, &mpi->chroma_y_shift);
mpi->chroma_width = mpi->width >> mpi->chroma_x_shift;
mpi->chroma_height = mpi->height >> mpi->chroma_y_shift;
}
switch(out_fmt){
case IMGFMT_I420:
case IMGFMT_IYUV:
mpi->flags|=MP_IMGFLAG_SWAPPED;
case IMGFMT_YV12:
return;
case IMGFMT_420A:
case IMGFMT_IF09:
mpi->num_planes=4;
case IMGFMT_YVU9:
case IMGFMT_444P:
case IMGFMT_422P:
case IMGFMT_411P:
case IMGFMT_440P:
case IMGFMT_444P16_LE:
case IMGFMT_444P16_BE:
case IMGFMT_422P16_LE:
case IMGFMT_422P16_BE:
case IMGFMT_420P16_LE:
case IMGFMT_420P16_BE:
return;
case IMGFMT_Y800:
case IMGFMT_Y8:
/* they're planar ones, but for easier handling use them as packed */
mpi->flags&=~MP_IMGFLAG_PLANAR;
mpi->num_planes=1;
return;
case IMGFMT_UYVY:
mpi->flags|=MP_IMGFLAG_SWAPPED;
case IMGFMT_YUY2:
mpi->bpp=16;
mpi->num_planes=1;
return;
case IMGFMT_NV12:
mpi->flags|=MP_IMGFLAG_SWAPPED;
case IMGFMT_NV21:
mpi->flags|=MP_IMGFLAG_PLANAR;
mpi->bpp=12;
mpi->num_planes=2;
mpi->chroma_width=(mpi->width>>0);
mpi->chroma_height=(mpi->height>>1);
mpi->chroma_x_shift=0;
mpi->chroma_y_shift=1;
return;
}
mp_msg(MSGT_DECVIDEO,MSGL_WARN,"mp_image: unknown out_fmt: 0x%X\n",out_fmt);
mpi->bpp=0;
}
mp_image_t* new_mp_image(int w,int h){
mp_image_t* mpi = malloc(sizeof(mp_image_t));
if(!mpi) return NULL; // error!
memset(mpi,0,sizeof(mp_image_t));
mpi->width=mpi->w=w;
mpi->height=mpi->h=h;
return mpi;
}
void free_mp_image(mp_image_t* mpi){
if(!mpi) return;
if(mpi->flags&MP_IMGFLAG_ALLOCATED){
/* becouse we allocate the whole image in once */
av_free(mpi->planes[0]);
if (mpi->flags & MP_IMGFLAG_RGB_PALETTE)
av_free(mpi->planes[1]);
}
free(mpi);
}
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