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154 lines
3.8 KiB
154 lines
3.8 KiB
/*
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* export_wav.c
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*
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* Copyright (C) Thomas Oestreich - June 2001
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*
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* This file is part of transcode, a video stream processing tool
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*
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* transcode is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* transcode is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#define MOD_NAME "export_wav.so"
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#define MOD_VERSION "v0.3.0 (2006-03-16)"
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#define MOD_CODEC "(audio) WAVE PCM"
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#include "transcode.h"
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#include "avilib/wavlib.h"
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#include <stdio.h>
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#include <stdlib.h>
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static int verbose_flag = TC_QUIET;
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static int capability_flag = TC_CAP_PCM|TC_CAP_RGB|TC_CAP_YUV|TC_CAP_VID;
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#define MOD_PRE wav
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#include "export_def.h"
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static WAV wav = NULL;
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/* ------------------------------------------------------------
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*
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* init codec
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*
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* ------------------------------------------------------------*/
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MOD_init
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{
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if (param->flag == TC_VIDEO) {
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return TC_EXPORT_OK;
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}
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if (param->flag == TC_AUDIO) {
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return TC_EXPORT_OK;
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}
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return TC_EXPORT_ERROR;
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}
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/* ------------------------------------------------------------
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*
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* open outputfile
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*
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* ------------------------------------------------------------*/
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MOD_open
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{
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if (param->flag == TC_AUDIO) {
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WAVError err;
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int rate;
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wav = wav_open(vob->audio_out_file, WAV_WRITE, &err);
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if (wav == NULL) {
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tc_log_error(MOD_NAME, "open file: %s", wav_strerror(err));
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return TC_EXPORT_ERROR;
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}
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rate = (vob->mp3frequency != 0) ?vob->mp3frequency :vob->a_rate;
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wav_set_bits(wav, vob->dm_bits);
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wav_set_rate(wav, rate);
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wav_set_bitrate(wav, vob->dm_chan * rate * vob->dm_bits/8);
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wav_set_channels(wav, vob->dm_chan);
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return TC_EXPORT_OK;
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}
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if (param->flag == TC_VIDEO) {
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return TC_EXPORT_OK;
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}
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return TC_EXPORT_ERROR;
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}
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/* ------------------------------------------------------------
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*
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* encode and export
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*
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* ------------------------------------------------------------*/
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MOD_encode
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{
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if (param->flag == TC_AUDIO) {
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if (wav_write_data(wav, param->buffer, param->size) != param->size) {
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tc_log_error(MOD_NAME, "write audio frame: %s",
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wav_strerror(wav_last_error(wav)));
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return TC_EXPORT_ERROR;
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}
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return TC_EXPORT_OK;
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}
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if (param->flag == TC_VIDEO) {
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return TC_EXPORT_OK;
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}
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return TC_EXPORT_ERROR;
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}
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/* ------------------------------------------------------------
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*
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* close outputfiles
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*
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* ------------------------------------------------------------*/
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MOD_close
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{
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if (param->flag == TC_VIDEO) {
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return TC_EXPORT_OK;
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}
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if (param->flag == TC_AUDIO) {
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if (wav_close(wav) != 0) {
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tc_log_error(MOD_NAME, "closing file: %s",
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wav_strerror(wav_last_error(wav)));
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return TC_EXPORT_ERROR;
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}
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return TC_EXPORT_OK;
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}
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return TC_EXPORT_ERROR;
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}
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/* ------------------------------------------------------------
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*
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* stop encoder
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*
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* ------------------------------------------------------------*/
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MOD_stop
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{
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if (param->flag == TC_VIDEO) {
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return TC_EXPORT_OK;
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}
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if (param->flag == TC_AUDIO) {
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return TC_EXPORT_OK;
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}
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return TC_EXPORT_ERROR;
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}
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