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/*
* export_wav.c
*
* Copyright (C) Thomas Oestreich - June 2001
*
* 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_wav.so"
#define MOD_VERSION "v0.3.0 (2006-03-16)"
#define MOD_CODEC "(audio) WAVE PCM"
#include "transcode.h"
#include "avilib/wavlib.h"
#include <stdio.h>
#include <stdlib.h>
static int verbose_flag = TC_QUIET;
static int capability_flag = TC_CAP_PCM|TC_CAP_RGB|TC_CAP_YUV|TC_CAP_VID;
#define MOD_PRE wav
#include "export_def.h"
static WAV wav = NULL;
/* ------------------------------------------------------------
*
* init codec
*
* ------------------------------------------------------------*/
MOD_init
{
if (param->flag == TC_VIDEO) {
return TC_EXPORT_OK;
}
if (param->flag == TC_AUDIO) {
return TC_EXPORT_OK;
}
return TC_EXPORT_ERROR;
}
/* ------------------------------------------------------------
*
* open outputfile
*
* ------------------------------------------------------------*/
MOD_open
{
if (param->flag == TC_AUDIO) {
WAVError err;
int rate;
wav = wav_open(vob->audio_out_file, WAV_WRITE, &err);
if (wav == NULL) {
tc_log_error(MOD_NAME, "open file: %s", wav_strerror(err));
return TC_EXPORT_ERROR;
}
rate = (vob->mp3frequency != 0) ?vob->mp3frequency :vob->a_rate;
wav_set_bits(wav, vob->dm_bits);
wav_set_rate(wav, rate);
wav_set_bitrate(wav, vob->dm_chan * rate * vob->dm_bits/8);
wav_set_channels(wav, vob->dm_chan);
return TC_EXPORT_OK;
}
if (param->flag == TC_VIDEO) {
return TC_EXPORT_OK;
}
return TC_EXPORT_ERROR;
}
/* ------------------------------------------------------------
*
* encode and export
*
* ------------------------------------------------------------*/
MOD_encode
{
if (param->flag == TC_AUDIO) {
if (wav_write_data(wav, param->buffer, param->size) != param->size) {
tc_log_error(MOD_NAME, "write audio frame: %s",
wav_strerror(wav_last_error(wav)));
return TC_EXPORT_ERROR;
}
return TC_EXPORT_OK;
}
if (param->flag == TC_VIDEO) {
return TC_EXPORT_OK;
}
return TC_EXPORT_ERROR;
}
/* ------------------------------------------------------------
*
* close outputfiles
*
* ------------------------------------------------------------*/
MOD_close
{
if (param->flag == TC_VIDEO) {
return TC_EXPORT_OK;
}
if (param->flag == TC_AUDIO) {
if (wav_close(wav) != 0) {
tc_log_error(MOD_NAME, "closing file: %s",
wav_strerror(wav_last_error(wav)));
return TC_EXPORT_ERROR;
}
return TC_EXPORT_OK;
}
return TC_EXPORT_ERROR;
}
/* ------------------------------------------------------------
*
* stop encoder
*
* ------------------------------------------------------------*/
MOD_stop
{
if (param->flag == TC_VIDEO) {
return TC_EXPORT_OK;
}
if (param->flag == TC_AUDIO) {
return TC_EXPORT_OK;
}
return TC_EXPORT_ERROR;
}
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