diff options
Diffstat (limited to 'libmpcodecs/vd_mpng.c')
| -rw-r--r-- | libmpcodecs/vd_mpng.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/libmpcodecs/vd_mpng.c b/libmpcodecs/vd_mpng.c deleted file mode 100644 index c430566c70..0000000000 --- a/libmpcodecs/vd_mpng.c +++ /dev/null @@ -1,182 +0,0 @@ -/* - * 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 <stdio.h> -#include <stdlib.h> - -#include "config.h" -#include "mp_msg.h" - -#include <png.h> - -#include "libavutil/common.h" -#include "mpbswap.h" -#include "libvo/fastmemcpy.h" - -#include "vd_internal.h" - -static const vd_info_t info = { - "PNG Images decoder", - "mpng", - "A'rpi", - ".so, based on mpng.c", - "uses libpng, 8bpp modes not supported yet" -}; - -LIBVD_EXTERN(mpng) - -static unsigned int out_fmt=0; - -static int last_w=-1; -static int last_h=-1; -static int last_c=-1; - -// to set/get/query special features/parameters -static int control(sh_video_t *sh,int cmd,void* arg,...){ - switch (cmd) - { - case VDCTRL_QUERY_FORMAT: - if (*((int *) arg) == out_fmt) return CONTROL_TRUE; - return CONTROL_FALSE; - } - return CONTROL_UNKNOWN; -} - -// init driver -static int init(sh_video_t *sh){ - last_w=-1; - return 1; -} - -// uninit driver -static void uninit(sh_video_t *sh){ -} - -//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h); - -static int pngPointer; -static int pngLength; - -static void pngReadFN( png_structp pngstr,png_bytep buffer,png_size_t size ) -{ - char * p = png_get_io_ptr(pngstr); - if(size>pngLength-pngPointer && pngLength>=pngPointer) size=pngLength-pngPointer; - fast_memcpy( buffer,(char *)&p[pngPointer],size ); - pngPointer+=size; -} - -// decode a frame -static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){ - png_structp png; - png_infop info; - png_infop endinfo; -// png_bytep data; - png_bytep * row_p; - png_uint_32 png_width=0,png_height=0; - int depth,color; - png_uint_32 i; - png_byte color_type; - mp_image_t* mpi; - - int cols; - png_colorp pal; - unsigned char *p; - - if(len<=0) return NULL; // skipped frame - - png=png_create_read_struct( PNG_LIBPNG_VER_STRING,NULL,NULL,NULL ); - info=png_create_info_struct( png ); - endinfo=png_create_info_struct( png ); - - pngPointer=8; - pngLength=len; - png_set_read_fn( png,data,pngReadFN ); - png_set_strip_16( png ); - png_set_sig_bytes( png,8 ); - png_read_info( png,info ); - png_get_IHDR( png,info,&png_width,&png_height,&depth,&color,NULL,NULL,NULL ); - png_set_bgr( png ); - - color_type=png_get_color_type(png, info); - - switch( color_type ) { - case PNG_COLOR_TYPE_GRAY_ALPHA: - mp_msg( MSGT_DECVIDEO,MSGL_INFO,"Sorry gray scaled png with alpha channel not supported at moment.\n" ); - break; - case PNG_COLOR_TYPE_GRAY: - out_fmt=IMGFMT_Y800; - break; - case PNG_COLOR_TYPE_PALETTE: - out_fmt=IMGFMT_BGR8; - break; - case PNG_COLOR_TYPE_RGB_ALPHA: - out_fmt=IMGFMT_BGR32; - break; - case PNG_COLOR_TYPE_RGB: - out_fmt=IMGFMT_BGR24; - break; - default: - mp_msg( MSGT_DECVIDEO,MSGL_INFO,"Sorry, unsupported PNG colorspace: %d.\n" ,color_type); - } - - // (re)init libvo if image parameters changed (width/height/colorspace) - if(last_w!=png_width || last_h!=png_height || last_c!=out_fmt){ - last_w=png_width; last_h=png_height; last_c=out_fmt; - if(!out_fmt) return NULL; - if(!mpcodecs_config_vo(sh,png_width,png_height,out_fmt)) return NULL; - } - -#if 0 - switch( info->color_type ) - { - case PNG_COLOR_TYPE_GRAY_ALPHA: printf( "[png] used GrayA -> stripping alpha channel\n" ); break; - case PNG_COLOR_TYPE_GRAY: printf( "[png] used Gray -> rgb\n" ); break; - case PNG_COLOR_TYPE_PALETTE: printf( "[png] used palette -> rgb\n" ); break; - case PNG_COLOR_TYPE_RGB_ALPHA: printf( "[png] used RGBA -> stripping alpha channel\n" ); break; - case PNG_COLOR_TYPE_RGB: printf( "[png] read rgb datas.\n" ); break; - } -#endif - - mpi=mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, - png_width,png_height); - if(!mpi) return NULL; - -// Let's DECODE! - row_p=malloc( sizeof( png_bytep ) * png_height ); -//png_get_rowbytes( png,info ) - for ( i=0; i < png_height; i++ ) row_p[i]=mpi->planes[0] + mpi->stride[0]*i; - png_read_image( png,row_p ); - free( row_p ); - - if (out_fmt==IMGFMT_BGR8) { - png_get_PLTE( png,info,&pal,&cols ); - mpi->planes[1] = realloc(mpi->planes[1], 4*cols); - p = mpi->planes[1]; - for (i = 0; i < cols; i++) { - *p++ = pal[i].blue; - *p++ = pal[i].green; - *p++ = pal[i].red; - *p++ = 0; - } - } - - png_read_end( png,endinfo ); - png_destroy_read_struct( &png,&info,&endinfo ); - - return mpi; -} |