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134 lines
2.9 KiB
134 lines
2.9 KiB
/*
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* extract_lzo.c
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*
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* Copyright (C) Tilmann Bitterberg - 2003
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*
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* This file is part of transcode, a video stream processing tool
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*
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* transcode 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, or (at your option)
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* any later version.
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*
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* transcode 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
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include "transcode.h"
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#include "libtc/libtc.h"
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#include "tcinfo.h"
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#include "ioaux.h"
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#include "avilib/avilib.h"
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#include "tc.h"
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#ifdef HAVE_LZO
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#include "libtc/tc_lzo.h"
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#define BUFFER_SIZE SIZE_RGB_FRAME<<1
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inline static void long2str(long a, unsigned char *b)
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{
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b[0] = (a&0xff000000)>>24;
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b[1] = (a&0x00ff0000)>>16;
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b[2] = (a&0x0000ff00)>>8;
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b[3] = (a&0x000000ff);
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}
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void extract_lzo(info_t *ipipe)
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{
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avi_t *avifile=NULL;
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char *video;
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int key, error=0;
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long frames, bytes, n;
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switch(ipipe->magic) {
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case TC_MAGIC_AVI:
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// scan file
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if (ipipe->nav_seek_file) {
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if(NULL == (avifile = AVI_open_indexfd(ipipe->fd_in,0,ipipe->nav_seek_file))) {
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AVI_print_error("AVI open");
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import_exit(1);
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}
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} else {
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if(NULL == (avifile = AVI_open_fd(ipipe->fd_in,1))) {
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AVI_print_error("AVI open");
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import_exit(1);
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}
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}
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// read video info;
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frames = AVI_video_frames(avifile);
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if (ipipe->frame_limit[1] < frames)
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{
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frames=ipipe->frame_limit[1];
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}
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if(ipipe->verbose & TC_STATS)
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tc_log_msg(__FILE__, "%ld video frames", frames);
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// allocate space, assume max buffer size
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if((video = tc_zalloc(SIZE_RGB_FRAME))==NULL) {
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tc_log_msg(__FILE__, "out of memory");
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error=1;
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break;
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}
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(int)AVI_set_video_position(avifile,ipipe->frame_limit[0]);
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for (n=ipipe->frame_limit[0]; n<=frames; ++n) {
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// video
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if((bytes = AVI_read_frame(avifile, video, &key))<0) {
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error=1;
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break;
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}
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if(tc_pwrite(ipipe->fd_out, video, bytes)!=bytes) {
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error=1;
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break;
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}
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}
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free(video);
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break;
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case TC_MAGIC_RAW:
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default:
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if(ipipe->magic == TC_MAGIC_UNKNOWN)
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tc_log_warn(__FILE__, "no file type specified, assuming %s",
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filetype(TC_MAGIC_RAW));
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error = tc_preadwrite(ipipe->fd_in, ipipe->fd_out);
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if (error < 0)
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error = 1;
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break;
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}
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import_exit(error);
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}
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#else
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void extract_lzo(info_t *ipipe)
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{
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tc_log_error(__FILE__, "No support for LZO configured -- exiting");
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import_exit(1);
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}
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#endif
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