diff options
Diffstat (limited to 'debian/transcode/transcode-1.1.7/export/export_ac3.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/export/export_ac3.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/export/export_ac3.c b/debian/transcode/transcode-1.1.7/export/export_ac3.c new file mode 100644 index 00000000..657d1f66 --- /dev/null +++ b/debian/transcode/transcode-1.1.7/export/export_ac3.c @@ -0,0 +1,205 @@ +/* + * export_ac3.c + * + * Copyright (C) Daniel Pittman, 2003, based on export_ogg.c which was: + * Copyright (C) Tilmann Bitterberg, July 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_ac3.so" +#define MOD_VERSION "v0.1 (2003-02-26)" +#define MOD_CODEC "(video) null | (audio) ac3" + +#include "transcode.h" + +#include <stdio.h> +#include <unistd.h> + +static int verbose_flag=TC_QUIET; +static int capability_flag=TC_CAP_PCM; + +#define MOD_PRE ac3 +#include "export_def.h" +static FILE *pFile = NULL; + +static inline 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 codec + * + * ------------------------------------------------------------*/ + +MOD_open +{ + int result; + + /* check for ffmpeg */ + if (tc_test_program("ffmpeg") != 0) return (TC_EXPORT_ERROR); + + if (param->flag == TC_AUDIO) { + char buf [PATH_MAX]; + + if (vob->mp3bitrate == 0) { + tc_log_warn (MOD_NAME, "Please set the export audio bitrate"); + return(TC_EXPORT_ERROR); + } + + if (vob->mp3frequency == 0) { + tc_log_warn (MOD_NAME, "Please set the export audio sample rate"); + return(TC_EXPORT_ERROR); + } + + tc_log_warn(MOD_NAME, "*** This module is non-optimal ***"); + tc_log_warn(MOD_NAME, "*** Use -N 0x2000 instead of -y ...,ac3 (faster) ***"); + + result = tc_snprintf (buf, PATH_MAX, + "ffmpeg -y -f s%dle -ac %d -ar %d -i - -ab %dk -acodec ac3 %s%s", + vob->dm_bits, + vob->dm_chan, + vob->mp3frequency, + vob->mp3bitrate, + vob->audio_out_file, + vob->verbose > 1 ? "" : " >/dev/null 2>&1"); + + if (result < 0) + return(TC_EXPORT_ERROR); + + if (verbose > 0) + tc_log_info(MOD_NAME, "%s", buf); + + if ((pFile = popen (buf, "w")) == NULL) + return(TC_EXPORT_ERROR); + + return(TC_EXPORT_OK); + + } + if (param->flag == TC_VIDEO) + return(TC_EXPORT_OK); + + // 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 + * + * ------------------------------------------------------------*/ + +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 codec + * + * ------------------------------------------------------------*/ + +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); +} + +/* vim: sw=4 + */ |