diff options
Diffstat (limited to 'debian/transcode/transcode-1.1.7/export/export_lame.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/export/export_lame.c | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/export/export_lame.c b/debian/transcode/transcode-1.1.7/export/export_lame.c new file mode 100644 index 00000000..28ae841a --- /dev/null +++ b/debian/transcode/transcode-1.1.7/export/export_lame.c @@ -0,0 +1,259 @@ +/* + * export_lame.c + * + * Copyright (C) Thomas Oestreich - November 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_lame.so" +#define MOD_VERSION "v0.0.3 (2003-03-06)" +#define MOD_CODEC "(audio) MPEG 1/2" + +#include "transcode.h" + +#include <stdio.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> + +static int verbose_flag = TC_QUIET; +static int capability_flag = TC_CAP_PCM; + +#define MOD_PRE lame +#include "export_def.h" + +static FILE* pFile = NULL; + +/* ------------------------------------------------------------ + * + * Pipe write helper function + * + * ------------------------------------------------------------*/ + +static int p_write (char *buf, size_t len) +{ + size_t n = 0; + size_t r = 0; + int fd = fileno (pFile); + + while (r < len) + { + if ((n = write (fd, buf + r, len - r)) < 0) + return n; + + r += n; + } + + return r; +} + +/* ------------------------------------------------------------ + * + * open outputfile + * + * ------------------------------------------------------------*/ + +MOD_open +{ + + /* check for lame */ + if (tc_test_program("lame") != 0) return (TC_EXPORT_ERROR); + + if (param->flag == TC_AUDIO) { + char buf [PATH_MAX]; + int ifreq,ofreq,orate; + int verb; + int ofreq_int; + int ofreq_dec; + int ochan; + char chan; + char *ptr; + const char * swap_bytes = ""; + + char br[64]; + + /* verbose? */ + verb = (verbose & TC_DEBUG) ? 2:0; + + /* fetch audio parameter */ + ofreq = vob->mp3frequency; + ifreq = vob->a_rate; + orate = vob->mp3bitrate; + ochan = vob->dm_chan; + chan = (ochan==2) ? 'j':'m'; + + /* default out freq */ + if(ofreq==0) + ofreq = ifreq; + + /* need conversion? */ + if(ofreq!=ifreq) { + /* add sox for conversion */ + if (tc_test_program("sox") != 0) { + return(TC_EXPORT_ERROR); + } else { + tc_snprintf(buf, sizeof(buf), "sox %s -r %d -c %d -t raw - -r %d -t raw - polyphase " + "2>/dev/null | ", + (vob->dm_bits==16)?"-w -s":"-b -u", + ifreq, ochan, ofreq); + ptr = buf + strlen(buf); + } + } else { + ptr = buf; + } + + /* convert output frequency to fixed point */ + ofreq_int = ofreq/1000.0; + ofreq_dec = ofreq-ofreq_int*1000; + + /* lame command line */ + +#if !defined(WORDS_BIGENDIAN) + swap_bytes = "-x"; +#endif + + switch(vob->a_vbr) { + + case 1: + tc_snprintf(br, sizeof(br), "--abr %d", orate); + break; + + case 2: + tc_snprintf(br, sizeof(br), "--vbr-new -b %d -B %d -V %d", orate-64, orate+64, (int) vob->mp3quality); + break; + + case 3: + tc_snprintf(br, sizeof(br), "--r3mix"); + break; + + default: + tc_snprintf(br, sizeof(br), "--cbr -b %d", orate); + break; + } + + /* ptr is a pointer into buf */ + tc_snprintf(ptr, sizeof(buf) - (ptr-buf), + "lame %s %s -s %d.%03d -m %c - \"%s.mp3\" 2>/dev/null %s", + swap_bytes, br, ofreq_int, ofreq_dec, chan, + vob->audio_out_file, (vob->ex_a_string?vob->ex_a_string:"")); + + tc_log_info (MOD_NAME, "%s", buf); + + if ((pFile = popen (buf, "w")) == NULL) + return(TC_EXPORT_ERROR); + + 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 (p_write (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 (pFile) + pclose (pFile); + + pFile = NULL; + + return(0); + } + + return (TC_EXPORT_ERROR); +} + |