diff options
Diffstat (limited to 'libs/ardour/export_file_io.cc')
| -rw-r--r-- | libs/ardour/export_file_io.cc | 92 |
1 files changed, 46 insertions, 46 deletions
diff --git a/libs/ardour/export_file_io.cc b/libs/ardour/export_file_io.cc index 2f8fdeacdf..4c39e5c907 100644 --- a/libs/ardour/export_file_io.cc +++ b/libs/ardour/export_file_io.cc @@ -40,24 +40,24 @@ SndfileWriterBase::SndfileWriterBase (int channels, nframes_t samplerate, int fo ExportFileWriter (path) { char errbuf[256]; - + sf_info.channels = channels; sf_info.samplerate = samplerate; sf_info.format = format; - + if (!sf_format_check (&sf_info)) { throw ExportFailed (X_("Invalid format given for SndfileWriter!")); } - + if (path.length() == 0) { throw ExportFailed (X_("No output file specified for SndFileWriter")); } - /* TODO add checks that the directory path exists, and also + /* TODO add checks that the directory path exists, and also check if we are overwriting an existing file... */ - - // Open file TODO make sure we have enough disk space for the output + + // Open file TODO make sure we have enough disk space for the output if (path.compare ("temp")) { if ((sndfile = sf_open (path.c_str(), SFM_WRITE, &sf_info)) == 0) { sf_error_str (0, errbuf, sizeof (errbuf) - 1); @@ -118,11 +118,11 @@ SndfileWriter<T>::write (T * data, nframes_t frames) sf_error_str (sndfile, errbuf, sizeof (errbuf) - 1); throw ExportFailed (string_compose(_("Could not write data to output file (%1)"), errbuf)); } - + if (GraphSink<T>::end_of_input) { sf_write_sync (sndfile); } - + return frames; } @@ -152,9 +152,9 @@ ExportTempFile::read (float * data, nframes_t frames) nframes_t frames_read = 0; nframes_t to_read = 0; sf_count_t read_status = 0; - + /* Initialize state at first read */ - + if (!reading) { if (!end_set) { end = get_length(); @@ -163,25 +163,25 @@ ExportTempFile::read (float * data, nframes_t frames) locate_to (start); reading = true; } - + /* Add silence to beginning */ - + if (silence_beginning > 0) { if (silence_beginning >= frames) { memset (data, 0, channels * frames * sizeof (float)); silence_beginning -= frames; return frames; } - + memset (data, 0, channels * silence_beginning * sizeof (float)); - + frames_read += silence_beginning; data += channels * silence_beginning; silence_beginning = 0; } - + /* Read file, but don't read past end */ - + if (get_read_position() >= end) { // File already read, do nothing! } else { @@ -190,32 +190,32 @@ ExportTempFile::read (float * data, nframes_t frames) } else { to_read = frames - frames_read; } - + read_status = sf_readf_float (sndfile, data, to_read); - + frames_read += to_read; data += channels * to_read; } - + /* Check for errors */ - + if (read_status != to_read) { throw ExportFailed (X_("Error reading temporary export file, export might not be complete!")); } - + /* Add silence at end */ - + if (silence_end > 0) { to_read = frames - frames_read; if (silence_end < to_read) { to_read = silence_end; } - + memset (data, 0, channels * to_read * sizeof (float)); silence_end -= to_read; frames_read += to_read; } - + return frames_read; } @@ -230,10 +230,10 @@ ExportTempFile::trim_beginning (bool yn) if (!beginning_processed) { process_beginning (); } - + start = silent_frames_beginning; return start; - + } nframes_t @@ -249,7 +249,7 @@ ExportTempFile::trim_end (bool yn) if (!end_processed) { process_end (); } - + end = silent_frames_end; return end; } @@ -261,10 +261,10 @@ ExportTempFile::process_beginning () nframes_t frames = 1024; nframes_t frames_read; float * buf = new float[channels * frames]; - + nframes_t pos = 0; locate_to (pos); - + while ((frames_read = _read (buf, frames)) > 0) { for (nframes_t i = 0; i < frames_read; i++) { for (uint32_t chn = 0; chn < channels; ++chn) { @@ -276,12 +276,12 @@ ExportTempFile::process_beginning () ++pos; } } - + out: - + silent_frames_beginning = pos; beginning_processed = true; - + delete [] buf; } @@ -291,9 +291,9 @@ ExportTempFile::process_end () nframes_t frames = 1024; nframes_t frames_read; float * buf = new float[channels * frames]; - + nframes_t pos = get_length() - 1; - + while (pos > 0) { if (pos > frames) { locate_to (pos - frames); @@ -303,7 +303,7 @@ ExportTempFile::process_end () locate_to (0); frames_read = _read (buf, pos); } - + for (nframes_t i = frames_read; i > 0; --i) { for (uint32_t chn = 0; chn < channels; ++chn) { if (buf[chn + (i - 1) * channels] != 0.0f) { @@ -313,12 +313,12 @@ ExportTempFile::process_end () --pos; } } - + out: - + silent_frames_end = pos; end_processed = true; - + delete [] buf; } @@ -397,37 +397,37 @@ ExportFileFactory::create_sndfile (FormatPtr format, unsigned int channels, ustr typedef boost::shared_ptr<SampleFormatConverter<short> > ShortConverterPtr; typedef boost::shared_ptr<SampleFormatConverter<int> > IntConverterPtr; typedef boost::shared_ptr<SampleFormatConverter<float> > FloatConverterPtr; - + typedef boost::shared_ptr<SndfileWriter<short> > ShortWriterPtr; typedef boost::shared_ptr<SndfileWriter<int> > IntWriterPtr; typedef boost::shared_ptr<SndfileWriter<float> > FloatWriterPtr; - + int real_format = format->format_id() | format->sample_format() | format->endianness(); uint32_t data_width = sndfile_data_width (real_format); if (data_width == 8 || data_width == 16) { - + ShortConverterPtr sfc = ShortConverterPtr (new SampleFormatConverter<short> (channels, format->dither_type(), data_width)); ShortWriterPtr sfw = ShortWriterPtr (new SndfileWriter<short> (channels, format->sample_rate(), real_format, filename)); sfc->pipe_to (sfw); - + return std::make_pair (boost::static_pointer_cast<FloatSink> (sfc), boost::static_pointer_cast<ExportFileWriter> (sfw)); } else if (data_width == 24 || data_width == 32) { - + IntConverterPtr sfc = IntConverterPtr (new SampleFormatConverter<int> (channels, format->dither_type(), data_width)); IntWriterPtr sfw = IntWriterPtr (new SndfileWriter<int> (channels, format->sample_rate(), real_format, filename)); sfc->pipe_to (sfw); - + return std::make_pair (boost::static_pointer_cast<FloatSink> (sfc), boost::static_pointer_cast<ExportFileWriter> (sfw)); } - + FloatConverterPtr sfc = FloatConverterPtr (new SampleFormatConverter<float> (channels, format->dither_type(), data_width)); FloatWriterPtr sfw = FloatWriterPtr (new SndfileWriter<float> (channels, format->sample_rate(), real_format, filename)); sfc->pipe_to (sfw); - + return std::make_pair (boost::static_pointer_cast<FloatSink> (sfc), boost::static_pointer_cast<ExportFileWriter> (sfw)); } |