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Diffstat (limited to '')
-rw-r--r-- | src/decoder/pcm_decoder_plugin.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/decoder/pcm_decoder_plugin.c b/src/decoder/pcm_decoder_plugin.c new file mode 100644 index 000000000..c8340ab67 --- /dev/null +++ b/src/decoder/pcm_decoder_plugin.c @@ -0,0 +1,88 @@ +/* + * Copyright (C) 2003-2011 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program 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 2 of the License, or + * (at your option) any later version. + * + * This program 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 this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "decoder/pcm_decoder_plugin.h" +#include "decoder_api.h" + +#include <glib.h> +#include <unistd.h> + +#undef G_LOG_DOMAIN +#define G_LOG_DOMAIN "pcm" + +static void +pcm_stream_decode(struct decoder *decoder, struct input_stream *is) +{ + static const struct audio_format audio_format = { + .sample_rate = 44100, + .format = SAMPLE_FORMAT_S16, + .channels = 2, + }; + GError *error = NULL; + enum decoder_command cmd; + + double time_to_size = audio_format_time_to_size(&audio_format); + + float total_time = -1; + if (is->size >= 0) + total_time = is->size / time_to_size; + + decoder_initialized(decoder, &audio_format, is->seekable, total_time); + + do { + char buffer[4096]; + + size_t nbytes = decoder_read(decoder, is, + buffer, sizeof(buffer)); + + if (nbytes == 0 && input_stream_eof(is)) + break; + + cmd = nbytes > 0 + ? decoder_data(decoder, is, + buffer, nbytes, 0) + : decoder_get_command(decoder); + if (cmd == DECODE_COMMAND_SEEK) { + goffset offset = (goffset)(time_to_size * + decoder_seek_where(decoder)); + if (input_stream_seek(is, offset, SEEK_SET, &error)) { + decoder_command_finished(decoder); + } else { + g_warning("seeking failed: %s", error->message); + g_error_free(error); + decoder_seek_error(decoder); + } + + cmd = DECODE_COMMAND_NONE; + } + } while (cmd == DECODE_COMMAND_NONE); +} + +static const char *const pcm_mime_types[] = { + /* for streams obtained by the cdio_paranoia input plugin */ + "audio/x-mpd-cdda-pcm", + NULL +}; + +const struct decoder_plugin pcm_decoder_plugin = { + .name = "pcm", + .stream_decode = pcm_stream_decode, + .mime_types = pcm_mime_types, +}; |