tomwalters@320: // Copyright 2006-2010, Thomas Walters
tomwalters@320: //
tomwalters@320: // AIM-C: A C++ implementation of the Auditory Image Model
tomwalters@320: // http://www.acousticscale.org/AIMC
tomwalters@320: //
tomwalters@320: // Licensed under the Apache License, Version 2.0 (the "License");
tomwalters@320: // you may not use this file except in compliance with the License.
tomwalters@320: // You may obtain a copy of the License at
tomwalters@320: //
tomwalters@320: //     http://www.apache.org/licenses/LICENSE-2.0
tomwalters@320: //
tomwalters@320: // Unless required by applicable law or agreed to in writing, software
tomwalters@320: // distributed under the License is distributed on an "AS IS" BASIS,
tomwalters@320: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
tomwalters@320: // See the License for the specific language governing permissions and
tomwalters@320: // limitations under the License.
tomwalters@320: 
tomwalters@320: /*!
tomwalters@320:  * \file
tomwalters@320:  * \brief File output in the HTK format.
tomwalters@320:  *
tomwalters@320:  * \author Tom Walters <tom@acousticscale.org>
tomwalters@320:  * \author Willem van Engen <cnbh@willem.engen.nl>
tomwalters@320:  * \date created 2007/01/26
tomwalters@320:  * \version \$Id: $
tomwalters@320:  */
tomwalters@320: 
tomwalters@320: #ifdef _WINDOWS
tomwalters@320: #  include <direct.h>  // for _mkdir & _rmdir
tomwalters@320: #else
tomwalters@320: #  include <sys/types.h>
tomwalters@320: #  include <dirent.h>  // for opendir & friends
tomwalters@320: #endif
tomwalters@320: 
tomwalters@320: #include <stdint.h>
tomwalters@320: #include <stdio.h>
tomwalters@320: #include <string.h>
tomwalters@320: #include <cmath>
tomwalters@320: 
tomwalters@320: #include "Modules/Output/FileOutputAIMC.h"
tomwalters@320: 
tomwalters@320: namespace aimc {
tomwalters@320: FileOutputAIMC::FileOutputAIMC(Parameters *params) : Module(params) {
tomwalters@320:   module_description_ = "File output in AIMC format";
tomwalters@320:   module_identifier_ = "htk_out";
tomwalters@320:   module_type_ = "output";
tomwalters@320:   module_version_ = "$Id: FileOutputAIMC.cc 51 2010-03-30 22:06:24Z tomwalters $";
tomwalters@320: 
tomwalters@320:   file_handle_ = NULL;
tomwalters@320:   header_written_ = false;
tomwalters@320:   frame_period_ms_ = 0.0f;
tomwalters@320: }
tomwalters@320: 
tomwalters@320: FileOutputAIMC::~FileOutputAIMC() {
tomwalters@320:   if (file_handle_ != NULL)
tomwalters@320:     CloseFile();
tomwalters@320: }
tomwalters@320: 
tomwalters@320: bool FileOutputAIMC::OpenFile(const char* filename, float frame_period_ms) {
tomwalters@320:   if (file_handle_ != NULL) {
tomwalters@320:     LOG_ERROR(_T("Couldn't open output file. A file is already open."));
tomwalters@320:     return false;
tomwalters@320:   }
tomwalters@320: 
tomwalters@320:   // Check that the output file exists and is writeable
tomwalters@320:   if ((file_handle_ = fopen(filename, "wb")) == NULL) {
tomwalters@320:     LOG_ERROR(_T("Couldn't open output file '%s' for writing."), filename);
tomwalters@320:     return false;
tomwalters@320:   }
tomwalters@322:   frame_count_ = 0;
tomwalters@320:   frame_period_ms_ = frame_period_ms;
tomwalters@320:   header_written_ = false;
tomwalters@320:   if (initialized_) {
tomwalters@320:     WriteHeader();
tomwalters@320:   }
tomwalters@320:   return true;
tomwalters@320: }
tomwalters@320: 
tomwalters@320: bool FileOutputAIMC::InitializeInternal(const SignalBank &input) {
tomwalters@320:   if (file_handle_ == NULL) {
tomwalters@320:     LOG_ERROR(_T("Couldn't initialize file output. "
tomwalters@320:                  "Please call FileOutputAIMC::OpenFile first"));
tomwalters@320:     return false;
tomwalters@320:   }
tomwalters@320:   if (header_written_) {
tomwalters@320:     LOG_ERROR(_T("A header has already been written on the output file. "
tomwalters@320:                  "Please call FileOutputAIMC::CloseFile to close that file, "
tomwalters@320:                  "and FileOutputAIMC::OpenFile to open an new one before "
tomwalters@320:                  "calling FileOutputAIMC::Initialize again."));
tomwalters@320:     return false;
tomwalters@320:   }
tomwalters@320:   channel_count_ = input.channel_count();
tomwalters@320:   buffer_length_ = input.buffer_length();	
tomwalters@320:   sample_rate_ = input.sample_rate();	
tomwalters@320:   WriteHeader();
tomwalters@320:   return true;
tomwalters@320: }
tomwalters@320: 
tomwalters@320: void FileOutputAIMC::ResetInternal() {
tomwalters@320:   if (file_handle_ != NULL && !header_written_) {
tomwalters@320:     WriteHeader();
tomwalters@320:   }
tomwalters@320:   if (file_handle_ != NULL)
tomwalters@320:     CloseFile();
tomwalters@320: }
tomwalters@320: 
tomwalters@320: void FileOutputAIMC::WriteHeader() {
tomwalters@320:   if (header_written_)
tomwalters@320:     return;
tomwalters@320: 
tomwalters@320:   /* File format:
tomwalters@320:    * Header: Number of frames (uint32),
tomwalters@320:    *         Frame period in milliseconds (float32),
tomwalters@320:    *         Number of channels per frame (uint32),
tomwalters@320:    *         Number of samples per channel of each frame (uint32)
tomwalters@320:    *         Sample rate (float32)
tomwalters@320:    *
tomwalters@320:    * Data: Series of floats, by time, then channel, then frame
tomwalters@320:    * f1c1t1,f1c1t2,f1c1t3...
tomwalters@320:    */
tomwalters@320: 
tomwalters@322:   uint32_t frame_count_out = frame_count_;
tomwalters@320:   float sample_period_out = frame_period_ms_;
tomwalters@320:   uint32_t channels_out = channel_count_;
tomwalters@320:   uint32_t samples_out = buffer_length_;
tomwalters@320:   float sample_rate = sample_rate_;
tomwalters@320: 
tomwalters@322:   fwrite(&frame_count_out, sizeof(frame_count_out), 1, file_handle_);
tomwalters@320:   fwrite(&sample_period_out, sizeof(sample_period_out), 1, file_handle_);
tomwalters@320:   fwrite(&channels_out, sizeof(channels_out), 1, file_handle_);
tomwalters@320:   fwrite(&samples_out, sizeof(samples_out), 1, file_handle_);
tomwalters@320:   fwrite(&sample_rate, sizeof(sample_rate), 1, file_handle_);
tomwalters@320:   fflush(file_handle_);
tomwalters@320: 
tomwalters@320:   header_written_ = true;
tomwalters@320: }
tomwalters@320: 
tomwalters@320: void FileOutputAIMC::Process(const SignalBank &input) {
tomwalters@320:   if (file_handle_ == NULL) {
tomwalters@320:     LOG_ERROR(_T("Couldn't process file output. No file is open."
tomwalters@320:                  "Please call FileOutputAIMC::OpenFile first"));
tomwalters@320:     return;
tomwalters@320:   }
tomwalters@320: 
tomwalters@320:   if (!header_written_) {
tomwalters@320:     LOG_ERROR(_T("No header has been written on the output file yet. Please "
tomwalters@320:                  "call FileOutputAIMC::Initialize() before calling "
tomwalters@320:                  "FileOutputAIMC::Process()"));
tomwalters@320:     return;
tomwalters@320:   }
tomwalters@320:   float s;
tomwalters@320: 
tomwalters@320:   for (int ch = 0; ch < input.channel_count(); ch++) {
tomwalters@320:     for (int i = 0; i < input.buffer_length(); i++) {
tomwalters@320:       s = input.sample(ch, i);
tomwalters@320:       fwrite(&s, sizeof(s), 1, file_handle_);
tomwalters@320:     }
tomwalters@320:   }
tomwalters@322:   frame_count_++;
tomwalters@320: }
tomwalters@320: 
tomwalters@320: bool FileOutputAIMC::CloseFile() {
tomwalters@320:   if (file_handle_ == NULL)
tomwalters@320:     return false;
tomwalters@320: 
tomwalters@320:   // Write the first 4 bytes of the file
tomwalters@320:   // with how many samples there are in the file
tomwalters@320:   fflush(file_handle_);
tomwalters@320:   rewind(file_handle_);
tomwalters@320:   fflush(file_handle_);
tomwalters@322:   uint32_t frame_count = frame_count_;
tomwalters@322:   fwrite(&frame_count, sizeof(frame_count), 1, file_handle_);
tomwalters@320: 
tomwalters@320:   // And close the file
tomwalters@320:   fclose(file_handle_);
tomwalters@320:   file_handle_ = NULL;
tomwalters@320:   header_written_ = false;
tomwalters@320:   return true;
tomwalters@320: }
tomwalters@320: }  // namespace aimc
tomwalters@320: