mirror of
https://github.com/mpv-player/mpv
synced 2024-12-10 00:46:22 +00:00
05bc68ae36
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26490 b3059339-0415-0410-9bf9-f77b7e298cf2
186 lines
5.0 KiB
C
186 lines
5.0 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "bitmap.h"
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#include "libavcodec/avcodec.h"
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#include "libavutil/intreadwrite.h"
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#include "libvo/fastmemcpy.h"
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static int pngRead( unsigned char * fname,txSample * bf )
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{
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int decode_ok;
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void *data;
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int len;
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AVCodecContext *avctx;
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AVFrame *frame;
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FILE *fp=fopen( fname,"rb" );
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if ( !fp )
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{
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mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png] file read error ( %s )\n",fname );
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return 1;
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}
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fseek(fp, 0, SEEK_END);
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len = ftell(fp);
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if (len > 50 * 1024 * 1024) return 2;
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data = malloc(len + FF_INPUT_BUFFER_PADDING_SIZE);
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fseek(fp, 0, SEEK_SET);
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fread(data, len, 1, fp);
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fclose(fp);
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avctx = avcodec_alloc_context();
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frame = avcodec_alloc_frame();
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avcodec_register_all();
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avcodec_open(avctx, avcodec_find_decoder(CODEC_ID_PNG));
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avcodec_decode_video(avctx, frame, &decode_ok, data, len);
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memset(bf, 0, sizeof(*bf));
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switch (avctx->pix_fmt) {
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case PIX_FMT_GRAY8: bf->BPP = 8; break;
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case PIX_FMT_GRAY16BE: bf->BPP = 16; break;
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case PIX_FMT_RGB24: bf->BPP = 24; break;
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case PIX_FMT_RGB32: bf->BPP = 32; break;
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default: bf->BPP = 0; break;
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}
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if (decode_ok && bf->BPP) {
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int bpl;
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bf->Width = avctx->width; bf->Height = avctx->height;
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bpl = bf->Width * (bf->BPP / 8);
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bf->ImageSize = bpl * bf->Height;
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bf->Image = malloc(bf->ImageSize);
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memcpy_pic(bf->Image, frame->data[0], bpl, bf->Height, bpl, frame->linesize[0]);
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}
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avcodec_close(avctx);
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av_freep(&frame);
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av_freep(&avctx);
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mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png] filename: %s.\n",fname );
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mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png] size: %dx%d bits: %d\n",bf->Width,bf->Height,bf->BPP );
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mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png] imagesize: %lu\n",bf->ImageSize );
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return !(decode_ok && bf->BPP);
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}
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static int conv24to32( txSample * bf )
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{
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unsigned char * tmpImage;
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int i,c;
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if ( bf->BPP == 24 )
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{
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tmpImage=bf->Image;
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bf->ImageSize=bf->Width * bf->Height * 4;
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bf->BPP=32;
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if ( ( bf->Image=calloc( 1, bf->ImageSize ) ) == NULL )
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{
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free( tmpImage );
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mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[bitmap] not enough memory for image\n" );
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return 1;
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}
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for ( c=0,i=0; c < bf->ImageSize; c += 4, i += 3)
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{
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*(uint32_t *)&bf->Image[c] = AV_RB24(&tmpImage[i]);
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}
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free( tmpImage );
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}
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return 0;
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}
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static void Normalize( txSample * bf )
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{
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int i;
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#ifndef WORDS_BIGENDIAN
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for ( i=0;i < (int)bf->ImageSize;i+=4 ) bf->Image[i+3]=0;
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#else
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for ( i=0;i < (int)bf->ImageSize;i+=4 ) bf->Image[i]=0;
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#endif
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}
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static unsigned char tmp[512];
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static unsigned char * fExist( unsigned char * fname )
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{
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FILE * fl;
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unsigned char ext[][6] = { ".png\0",".PNG\0" };
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int i;
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fl=fopen( fname,"rb" );
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if ( fl != NULL )
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{
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fclose( fl );
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return fname;
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}
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for ( i=0;i<2;i++ )
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{
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snprintf( tmp,511,"%s%s",fname,ext[i] );
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fl=fopen( tmp,"rb" );
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if ( fl != NULL )
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{
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fclose( fl );
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return tmp;
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}
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}
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return NULL;
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}
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int bpRead( char * fname, txSample * bf )
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{
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fname=fExist( fname );
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if ( fname == NULL ) return -2;
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if ( pngRead( fname,bf ) )
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{
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mp_dbg( MSGT_GPLAYER,MSGL_FATAL,"[bitmap] unknown file type ( %s )\n",fname );
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return -5;
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}
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if ( bf->BPP < 24 )
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{
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mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[bitmap] Sorry, only 24 and 32 bpp bitmaps are supported.\n" );
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return -1;
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}
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if ( conv24to32( bf ) ) return -8;
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Normalize( bf );
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return 0;
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}
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void Convert32to1( txSample * in,txSample * out,int adaptivlimit )
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{
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out->Width=in->Width;
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out->Height=in->Height;
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out->BPP=1;
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out->ImageSize=(out->Width * out->Height + 7) / 8;
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mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[c32to1] imagesize: %d\n",out->ImageSize );
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out->Image=calloc( 1,out->ImageSize );
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if ( out->Image == NULL ) mp_msg( MSGT_GPLAYER,MSGL_WARN,MSGTR_NotEnoughMemoryC32To1 );
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{
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int i,b,c=0; unsigned int * buf = NULL; unsigned char tmp = 0; int nothaveshape = 1;
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buf=(unsigned int *)in->Image;
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for ( b=0,i=0;i < (int)(out->Width * out->Height);i++ )
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{
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if ( (int)buf[i] != adaptivlimit ) tmp=( tmp >> 1 )|128;
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else { tmp=tmp >> 1; buf[i]=nothaveshape=0; }
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if ( b++ == 7 ) { out->Image[c++]=tmp; tmp=b=0; }
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}
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if ( b ) out->Image[c]=tmp;
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if ( nothaveshape ) { free( out->Image ); out->Image=NULL; }
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}
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}
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