diff options
Diffstat (limited to 'gr-audio-oss/src/audio_oss_sink.cc')
| -rw-r--r-- | gr-audio-oss/src/audio_oss_sink.cc | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/gr-audio-oss/src/audio_oss_sink.cc b/gr-audio-oss/src/audio_oss_sink.cc deleted file mode 100644 index 8230ab9b6..000000000 --- a/gr-audio-oss/src/audio_oss_sink.cc +++ /dev/null @@ -1,161 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2004,2010 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 <audio_oss_sink.h> -#include <gr_io_signature.h> -#include <gr_prefs.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> - - -static std::string -default_device_name () -{ - return gr_prefs::singleton()->get_string("audio_oss", "default_output_device", "/dev/dsp"); -} - -audio_oss_sink_sptr -audio_oss_make_sink (int sampling_rate, const std::string dev, bool ok_to_block) -{ - return gnuradio::get_initial_sptr(new audio_oss_sink (sampling_rate, dev, ok_to_block)); -} - -audio_oss_sink::audio_oss_sink (int sampling_rate, - const std::string device_name, - bool ok_to_block) - : gr_sync_block ("audio_oss_sink", - gr_make_io_signature (1, 2, sizeof (float)), - gr_make_io_signature (0, 0, 0)), - d_sampling_rate (sampling_rate), - d_device_name (device_name.empty() ? default_device_name() : device_name), - d_fd (-1), d_buffer (0), d_chunk_size (0) -{ - if ((d_fd = open (d_device_name.c_str (), O_WRONLY)) < 0){ - fprintf (stderr, "audio_oss_sink: "); - perror (d_device_name.c_str ()); - throw std::runtime_error ("audio_oss_sink"); - } - - double CHUNK_TIME = - std::max(0.001, gr_prefs::singleton()->get_double("audio_oss", "latency", 0.005)); - - d_chunk_size = (int) (d_sampling_rate * 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_oss_sink: " << d_device_name << " ioctl failed\n"; - perror (d_device_name.c_str ()); - throw std::runtime_error ("audio_oss_sink"); - } - - if (format != orig_format){ - fprintf (stderr, "audio_oss_sink: 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_oss_sink: could not set STEREO mode"); - throw std::runtime_error ("audio_oss_sink"); - } - - // set sampling freq - int sf = sampling_rate; - if (ioctl (d_fd, SNDCTL_DSP_SPEED, &sf) < 0){ - std::cerr << "audio_oss_sink: " - << d_device_name << ": invalid sampling_rate " - << sampling_rate << "\n"; - sampling_rate = 8000; - if (ioctl (d_fd, SNDCTL_DSP_SPEED, &sf) < 0){ - std::cerr << "audio_oss_sink: failed to set sampling_rate to 8000\n"; - throw std::runtime_error ("audio_oss_sink"); - } - } -} - -audio_oss_sink::~audio_oss_sink () -{ - close (d_fd); - delete [] d_buffer; -} - - -int -audio_oss_sink::work (int noutput_items, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items) -{ - const float *f0, *f1; - - switch (input_items.size ()){ - - case 1: // mono input - - f0 = (const float *) input_items[0]; - - for (int i = 0; i < noutput_items; i += d_chunk_size){ - for (int j = 0; j < d_chunk_size; j++){ - d_buffer[2*j+0] = (short) (f0[j] * 32767); - d_buffer[2*j+1] = (short) (f0[j] * 32767); - } - f0 += d_chunk_size; - if (write (d_fd, d_buffer, 2 * d_chunk_size * sizeof (short)) < 0) - perror ("audio_oss_sink: write"); - } - break; - - case 2: // stereo input - - f0 = (const float *) input_items[0]; - f1 = (const float *) input_items[1]; - - for (int i = 0; i < noutput_items; i += d_chunk_size){ - for (int j = 0; j < d_chunk_size; j++){ - d_buffer[2*j+0] = (short) (f0[j] * 32767); - d_buffer[2*j+1] = (short) (f1[j] * 32767); - } - f0 += d_chunk_size; - f1 += d_chunk_size; - if (write (d_fd, d_buffer, 2 * d_chunk_size * sizeof (short)) < 0) - perror ("audio_oss_sink: write"); - } - break; - } - - return noutput_items; -} |