diff options
Diffstat (limited to 'debian/transcode/transcode-1.1.7/export/export_mp2enc.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/export/export_mp2enc.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/export/export_mp2enc.c b/debian/transcode/transcode-1.1.7/export/export_mp2enc.c new file mode 100644 index 00000000..c6026b1c --- /dev/null +++ b/debian/transcode/transcode-1.1.7/export/export_mp2enc.c @@ -0,0 +1,254 @@ +/* + * export_mp2enc.c + * + * Georg Ludwig - January 2002 + * + * Parts of export_wav and export_mpeg2enc used for this file + * + * 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_mp2enc.so" +#define MOD_VERSION "v1.0.11 (2006-03-16)" +#define MOD_CODEC "(audio) MPEG 1/2" + +#include "transcode.h" +#include "avilib/wavlib.h" + +#include <stdio.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> + +#define CLAMP(x,l,h) x > h ? h : x < l ? l : x + +static int verbose_flag = TC_QUIET; +static int capability_flag = TC_CAP_PCM; + +#define MOD_PRE mp2enc +#include "export_def.h" + +static FILE* pFile = NULL; +static WAV wav = NULL; + +/* ------------------------------------------------------------ + * + * open outputfile + * + * ------------------------------------------------------------*/ + +MOD_open +{ + int verb; + + /* check for mp2enc */ + if (tc_test_program("mp2enc") != 0) return (TC_EXPORT_ERROR); + + if (param->flag == TC_AUDIO) + { + char buf [PATH_MAX]; + char mono[] = "-m"; + char stereo[] = "-s"; + int srate, brate; + char *chan; + int def_srate, def_brate; + char *def_chan; + + verb = (verbose & TC_DEBUG) ? 2:0; + + srate = (vob->mp3frequency != 0) ? vob->mp3frequency : vob->a_rate; + brate = vob->mp3bitrate; + chan = (vob->dm_chan>=2) ? stereo : mono; + + def_srate = srate; + def_brate = brate; + def_chan = chan; + + // default profile values, authority: videohelp and dvdfaq + switch(vob->mpeg_profile) { + case VCD_PAL: case VCD_NTSC: case VCD: + def_srate = 44100; + def_brate = 224; + def_chan = stereo; + break; + case SVCD_PAL: case SVCD_NTSC: case SVCD: + def_srate = 44100; + def_brate = CLAMP (brate, 64, 384); + def_chan = stereo; + break; + case XVCD_PAL: case XVCD_NTSC: case XVCD: + // check for invalid sample rate + if ((srate != 32000) && (srate != 44100) && (srate != 48000)) + def_srate = 44100; + // don't change if valid rate + def_brate = CLAMP (brate, 64, 384); + def_chan = stereo; + break; + case DVD_PAL: case DVD_NTSC: case DVD: + def_srate = 48000; + def_brate = CLAMP (brate, 64, 384); + def_chan = stereo; + case PROF_NONE: + break; + } + + // encoding values, let commandline override profile + if(!(vob->export_attributes & TC_EXPORT_ATTRIBUTE_ARATE)) + if (srate != def_srate) { + tc_log_info(MOD_NAME, "export profile changed samplerate:" + " %d -> %d Hz.", srate, def_srate); + srate = def_srate; + } + if(!(vob->export_attributes & TC_EXPORT_ATTRIBUTE_ABITRATE)) + if (brate != def_brate) { + tc_log_info(MOD_NAME, "export profile changed bitrate: " + "%d -> %d kbps.", brate, def_brate); + brate = def_brate; + } + if(!(vob->export_attributes & TC_EXPORT_ATTRIBUTE_ACHANS)) + if (chan != def_chan) { + tc_log_info(MOD_NAME, "export profile changed channels: " + "mono -> stereo."); + chan = def_chan; + } + + if(tc_snprintf(buf, PATH_MAX, "mp2enc -v %d -r %d -b %d %s -o \"%s\" %s", verb, srate, brate, chan, vob->audio_out_file, (vob->ex_a_string?vob->ex_a_string:"")) < 0) { + tc_log_perror(MOD_NAME, "cmd buffer overflow"); + return(TC_EXPORT_ERROR); + } + + if(verbose & TC_INFO) tc_log_info(MOD_NAME, "(%d/%d) cmd=%s", + (int)strlen(buf), PATH_MAX, buf); + + if((pFile = popen (buf, "w")) == NULL) + return(TC_EXPORT_ERROR); + + wav = wav_fdopen(fileno(pFile), WAV_WRITE|WAV_PIPE, NULL); + if (wav == NULL) { + tc_log_perror(MOD_NAME, "open wave stream"); + return TC_EXPORT_ERROR; + } + + wav_set_rate(wav, vob->a_rate); + wav_set_bitrate(wav, vob->dm_chan*vob->a_rate*vob->dm_bits/8); + wav_set_channels(wav, vob->dm_chan); + wav_set_bits(wav, vob->dm_bits); + + return(0); + } + + if (param->flag == TC_VIDEO) + return(0); + + // invalid flag + return(TC_EXPORT_ERROR); +} + + +/* ------------------------------------------------------------ + * + * init codec + * + * ------------------------------------------------------------*/ + +MOD_init +{ + if(param->flag == TC_AUDIO) + { + return(0); + } + + if (param->flag == TC_VIDEO) + return(0); + + // invalid flag + return(TC_EXPORT_ERROR); +} + +/* ------------------------------------------------------------ + * + * encode and export frame + * + * ------------------------------------------------------------*/ + + +MOD_encode +{ + if(param->flag == TC_AUDIO) + { + if (wav_write_data(wav, param->buffer, param->size) != param->size) + { + tc_log_perror(MOD_NAME, "write audio frame"); + return(TC_EXPORT_ERROR); + } + return (0); + } + + if (param->flag == TC_VIDEO) + return(0); + + // invalid flag + return(TC_EXPORT_ERROR); +} + +/* ------------------------------------------------------------ + * + * stop encoder + * + * ------------------------------------------------------------*/ + +MOD_stop +{ + if (param->flag == TC_VIDEO) + return (0); + + if (param->flag == TC_AUDIO) + return (0); + + return(TC_EXPORT_ERROR); +} + +/* ------------------------------------------------------------ + * + * close codec + * + * ------------------------------------------------------------*/ + +MOD_close +{ + if (param->flag == TC_VIDEO) + return (0); + + if (param->flag == TC_AUDIO) + { + if (wav != NULL) { + wav_close(wav); + wav = NULL; + } + if (pFile != NULL) { + pclose (pFile); + pFile = NULL; + } + + return(0); + } + + return (TC_EXPORT_ERROR); +} + |