diff options
Diffstat (limited to 'debian/transcode/transcode-1.1.7/export/export_lzo.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/export/export_lzo.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/export/export_lzo.c b/debian/transcode/transcode-1.1.7/export/export_lzo.c new file mode 100644 index 00000000..895ad256 --- /dev/null +++ b/debian/transcode/transcode-1.1.7/export/export_lzo.c @@ -0,0 +1,297 @@ +/* + * export_lzo.c + * + * Copyright (C) Thomas Oestreich - October 2002 + * + * This file is part of transcode, a video stream processing tool + * + * transcode 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, or (at your option) + * any later version. + * + * transcode 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 GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#define MOD_NAME "export_lzo.so" +#define MOD_VERSION "v0.1.0 (2005-10-15)" +#define MOD_CODEC "(video) LZO real-time compression | (audio) MPEG/AC3/PCM" + +#include "transcode.h" +#include "libtc/libtc.h" +#include "avilib/avilib.h" +#include "aud_aux.h" +#include "import/magic.h" +#include "libtc/tc_lzo.h" + +#include <stdio.h> +#include <stdlib.h> + +static int verbose_flag=TC_QUIET; +static int capability_flag=TC_CAP_DV|TC_CAP_PCM|TC_CAP_RGB|TC_CAP_YUV|TC_CAP_AC3|TC_CAP_AUD|TC_CAP_VID; + +#define MOD_PRE lzo +#include "export_def.h" + + +static avi_t *avifile1=NULL; +static avi_t *avifile2=NULL; + +static int info_shown=0, force_kf=0; + +static int r; +static lzo_byte *out; +static lzo_byte *wrkmem; +static lzo_uint out_len; +static int codec; + +/* ------------------------------------------------------------ + * + * init codec + * + * ------------------------------------------------------------*/ + +MOD_init +{ + + if(param->flag == TC_VIDEO) { + if(verbose & TC_DEBUG) + tc_log_info(MOD_NAME, "max AVI-file size limit = %lu bytes", + (unsigned long) AVI_max_size()); + + /* + * Step 1: initialize the LZO library + */ + + if (lzo_init() != LZO_E_OK) { + tc_log_warn(MOD_NAME, "lzo_init() failed"); + return(TC_EXPORT_ERROR); + } + + wrkmem = (lzo_bytep) lzo_malloc(LZO1X_1_MEM_COMPRESS); + out = (lzo_bytep) lzo_malloc(vob->ex_v_height*vob->ex_v_width*3*2); + + if (wrkmem == NULL || out == NULL) { + tc_log_error(MOD_NAME, "out of memory"); + return(TC_EXPORT_ERROR); + } + + codec = vob->im_v_codec; + + return(0); + } + + if(param->flag == TC_AUDIO) + return(tc_audio_init(vob, verbose_flag)); + + // invalid flag + return(TC_EXPORT_ERROR); +} + +/* ------------------------------------------------------------ + * + * open outputfile + * + * ------------------------------------------------------------*/ + +MOD_open +{ + + // open out file + if(vob->avifile_out==NULL) + if(NULL == (vob->avifile_out = AVI_open_output_file(vob->video_out_file))) { + AVI_print_error("avi open error"); + exit(TC_EXPORT_ERROR); + } + + /* save locally */ + avifile2 = vob->avifile_out; + + if(param->flag == TC_VIDEO) { + + //video + + //force keyframe + force_kf=1; + + AVI_set_video(vob->avifile_out, vob->ex_v_width, vob->ex_v_height, vob->ex_fps, "LZO2"); + + if (vob->avi_comment_fd>0) + AVI_set_comment_fd(vob->avifile_out, vob->avi_comment_fd); + + if(!info_shown && verbose_flag) + tc_log_info(MOD_NAME, "codec=%s, fps=%6.3f, width=%d, height=%d", + "LZO2", vob->ex_fps, vob->ex_v_width, vob->ex_v_height); + + info_shown=1; + + return(0); + } + + if(param->flag == TC_AUDIO) { + tc_log_warn(MOD_NAME, "Usage of this module for audio encoding is deprecated."); + tc_log_warn(MOD_NAME, "Consider switch to export_tcaud module."); + return(tc_audio_open(vob, vob->avifile_out)); + } + // invalid flag + return(TC_EXPORT_ERROR); +} + +inline static void long2str(long a, unsigned char *b) +{ + b[0] = (a&0xff000000)>>24; + b[1] = (a&0x00ff0000)>>16; + b[2] = (a&0x0000ff00)>>8; + b[3] = (a&0x000000ff); +} + +inline static void short2str(short a, unsigned char *b) +{ + b[0] = (a&0xff00)>>8; + b[1] = (a&0x00ff); +} + +/* ------------------------------------------------------------ + * + * encode and export + * + * ------------------------------------------------------------*/ + +MOD_encode +{ + + int key; + + tc_lzo_header_t h; + + if(param->flag == TC_VIDEO) { + + //write video + + //encode + + /* + * compress from `in' to `out' with LZO1X-1 + */ + + r = lzo1x_1_compress(param->buffer, param->size, out+sizeof(h), &out_len, wrkmem); + h.magic = TC_CODEC_LZO2; + h.size = out_len; + h.method = 1; + h.level = 1; + h.flags = 0; + h.flags |= ((codec==CODEC_RGB)?TC_LZO_FORMAT_RGB24:TC_LZO_FORMAT_YUV420P); + h.pad = 0; + + ac_memcpy (out, &h, sizeof(h)); + + if (r == LZO_E_OK) { + if(verbose & TC_DEBUG) + tc_log_info(MOD_NAME, "compressed %lu bytes into %lu bytes", + (long) param->size, (long) out_len); + } else { + /* this should NEVER happen */ + tc_log_warn(MOD_NAME, "internal error - compression failed: %d", r); + return(TC_EXPORT_ERROR); + } + + /* check for an incompressible block */ + if (out_len >= param->size) { + if(verbose & TC_DEBUG) + tc_log_info(MOD_NAME, "block contains incompressible data"); + h.flags |= TC_LZO_NOT_COMPRESSIBLE; + ac_memcpy(out+sizeof(h), param->buffer, param->size); + out_len = param->size; + } + + //0.5.0-pre8: + key = ((param->attributes & TC_FRAME_IS_KEYFRAME) || force_kf) ? 1:0; + + out_len += sizeof(h); + + //0.6.2: switch outfile on "C" and -J pv + //0.6.2: enforce auto-split at 2G (or user value) for normal AVI files + if((uint32_t)(AVI_bytes_written(avifile2)+out_len+16+8)>>20 >= tc_avi_limit) tc_outstream_rotate_request(); + + if(key) tc_outstream_rotate(); + + if(AVI_write_frame(avifile2, out, out_len, key)<0) { + AVI_print_error("avi video write error"); + + return(TC_EXPORT_ERROR); + } + + return(0); + + } + + if(param->flag == TC_AUDIO) + return(tc_audio_encode(param->buffer, param->size, avifile2)); + + // invalid flag + return(TC_EXPORT_ERROR); +} + +/* ------------------------------------------------------------ + * + * stop encoder + * + * ------------------------------------------------------------*/ + +MOD_stop +{ + + if(param->flag == TC_VIDEO) { + + lzo_free(wrkmem); + lzo_free(out); + + return(0); + } + + if(param->flag == TC_AUDIO) + return(tc_audio_stop()); + + return(TC_EXPORT_ERROR); +} + +/* ------------------------------------------------------------ + * + * close outputfiles + * + * ------------------------------------------------------------*/ + +MOD_close +{ + + vob_t *vob = tc_get_vob(); + + //inputfile + if(avifile1!=NULL) { + AVI_close(avifile1); + avifile1=NULL; + } + + if(param->flag == TC_AUDIO) + return(tc_audio_close()); + + //outputfile + if(vob->avifile_out!=NULL) { + AVI_close(vob->avifile_out); + vob->avifile_out=NULL; + } + + if(param->flag == TC_VIDEO) return(0); + + return(TC_EXPORT_ERROR); + +} + |