diff options
Diffstat (limited to 'gr-audio/lib/windows/audio_windows_source.cc')
| -rw-r--r-- | gr-audio/lib/windows/audio_windows_source.cc | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/gr-audio/lib/windows/audio_windows_source.cc b/gr-audio/lib/windows/audio_windows_source.cc deleted file mode 100644 index 75b0a33bb..000000000 --- a/gr-audio/lib/windows/audio_windows_source.cc +++ /dev/null @@ -1,205 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2004-2011 Free Software Foundation, Inc. - * - * This file is part of GNU Radio - * - * GNU Radio 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 3, or (at your option) - * any later version. - * - * GNU Radio 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 Radio; see the file COPYING. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, - * Boston, MA 02110-1301, USA. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "gr_audio_registry.h" -#include <audio_windows_source.h> -#include <gr_io_signature.h> -//include <sys/soundcard.h> -//include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> -#include <stdio.h> -#include <iostream> -#include <stdexcept> - -AUDIO_REGISTER_SOURCE(REG_PRIO_HIGH, windows)( - int sampling_rate, const std::string &device_name, bool -){ - return audio_source::sptr(new audio_windows_source(sampling_rate, device_name)); -} - -static const double CHUNK_TIME = 0.005; // 5 ms - -// FIXME these should query some kind of user preference - -static std::string -default_device_name () -{ - return "/dev/dsp"; -} - -audio_windows_source::audio_windows_source (int sampling_freq, const std::string device_name) - : gr_sync_block ("audio_windows_source", - gr_make_io_signature (0, 0, 0), - gr_make_io_signature (1, 2, sizeof (float))), - d_sampling_freq (sampling_freq), - d_device_name (device_name.empty ()? default_device_name () : device_name), - d_fd (-1), d_buffer (0), d_chunk_size (0) -{ - //FIXME TODO implement me -#if 0 - if ((d_fd = open (d_device_name.c_str (), O_RDONLY)) < 0) - { - fprintf (stderr, "audio_windows_source: "); - perror (d_device_name.c_str ()); - throw - std::runtime_error ("audio_windows_source"); - } - - d_chunk_size = (int) (d_sampling_freq * CHUNK_TIME); - set_output_multiple (d_chunk_size); - - d_buffer = new short[d_chunk_size * 2]; - - int format = AFMT_S16_NE; - int orig_format = format; - if (ioctl (d_fd, SNDCTL_DSP_SETFMT, &format) < 0) - { - std:: - cerr << "audio_windows_source: " << d_device_name << - " ioctl failed\n"; - perror (d_device_name.c_str ()); - throw - std::runtime_error ("audio_windows_source"); - } - - if (format != orig_format) - { - fprintf (stderr, "audio_windows_source: unable to support format %d\n", - orig_format); - fprintf (stderr, " card requested %d instead.\n", format); - } - - // set to stereo no matter what. Some hardware only does stereo - int channels = 2; - if (ioctl (d_fd, SNDCTL_DSP_CHANNELS, &channels) < 0 || channels != 2) - { - perror ("audio_windows_source: could not set STEREO mode"); - throw - std::runtime_error ("audio_windows_source"); - } - - // set sampling freq - int sf = sampling_freq; - if (ioctl (d_fd, SNDCTL_DSP_SPEED, &sf) < 0) - { - std::cerr << "audio_windows_source: " - << d_device_name << ": invalid sampling_freq " - << sampling_freq << "\n"; - sampling_freq = 8000; - if (ioctl (d_fd, SNDCTL_DSP_SPEED, &sf) < 0) - { - std:: - cerr << - "audio_windows_source: failed to set sampling_freq to 8000\n"; - throw - std::runtime_error ("audio_windows_source"); - } - } -#endif -} - -audio_windows_source::~audio_windows_source () -{ - /*close (d_fd); - delete [] d_buffer; - */ -} - -int -audio_windows_source::work (int noutput_items, - gr_vector_const_void_star & input_items, - gr_vector_void_star & output_items) -{ - //FIXME TODO implement me -#if 0 - float *f0 = (float *) output_items[0]; - float *f1 = (float *) output_items[1]; // will be invalid if this is mono output - - const int shorts_per_item = 2; // L + R - const int bytes_per_item = shorts_per_item * sizeof (short); - - // To minimize latency, never return more than CHUNK_TIME - // worth of samples per call to work. - // FIXME, we need an API to set this value - - noutput_items = std::min (noutput_items, d_chunk_size); - - int base = 0; - int ntogo = noutput_items; - - while (ntogo > 0) - { - int nbytes = std::min (ntogo, d_chunk_size) * bytes_per_item; - int result_nbytes = read (d_fd, d_buffer, nbytes); - - if (result_nbytes < 0) - { - perror ("audio_windows_source"); - return -1; // say we're done - } - - if ((result_nbytes & (bytes_per_item - 1)) != 0) - { - fprintf (stderr, "audio_windows_source: internal error.\n"); - throw std::runtime_error ("internal error"); - } - - int result_nitems = result_nbytes / bytes_per_item; - - // now unpack samples into output streams - - switch (output_items.size ()) - { - case 1: // mono output - for (int i = 0; i < result_nitems; i++) - { - f0[base + i] = d_buffer[2 * i + 0] * (1.0 / 32767); - } - break; - - case 2: // stereo output - for (int i = 0; i < result_nitems; i++) - { - f0[base + i] = d_buffer[2 * i + 0] * (1.0 / 32767); - f1[base + i] = d_buffer[2 * i + 1] * (1.0 / 32767); - } - break; - - default: - assert (0); - } - - ntogo -= result_nitems; - base += result_nitems; - } - - return noutput_items - ntogo; -#endif - return -1; // EOF -} |