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-rw-r--r--src/decoder/audiofile_decoder_plugin.c256
1 files changed, 256 insertions, 0 deletions
diff --git a/src/decoder/audiofile_decoder_plugin.c b/src/decoder/audiofile_decoder_plugin.c
new file mode 100644
index 000000000..b099cf706
--- /dev/null
+++ b/src/decoder/audiofile_decoder_plugin.c
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+/*
+ * Copyright (C) 2003-2010 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_api.h"
+#include "audio_check.h"
+
+#include <audiofile.h>
+#include <af_vfs.h>
+#include <assert.h>
+#include <glib.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "audiofile"
+
+/* pick 1020 since its devisible for 8,16,24, and 32-bit audio */
+#define CHUNK_SIZE 1020
+
+static int audiofile_get_duration(const char *file)
+{
+ int total_time;
+ AFfilehandle af_fp = afOpenFile(file, "r", NULL);
+ if (af_fp == AF_NULL_FILEHANDLE) {
+ return -1;
+ }
+ total_time = (int)
+ ((double)afGetFrameCount(af_fp, AF_DEFAULT_TRACK)
+ / afGetRate(af_fp, AF_DEFAULT_TRACK));
+ afCloseFile(af_fp);
+ return total_time;
+}
+
+static ssize_t
+audiofile_file_read(AFvirtualfile *vfile, void *data, size_t length)
+{
+ struct input_stream *is = (struct input_stream *) vfile->closure;
+ GError *error = NULL;
+ size_t nbytes;
+
+ nbytes = input_stream_read(is, data, length, &error);
+ if (nbytes == 0 && error != NULL) {
+ g_warning("%s", error->message);
+ g_error_free(error);
+ return -1;
+ }
+
+ return nbytes;
+}
+
+static long
+audiofile_file_length(AFvirtualfile *vfile)
+{
+ struct input_stream *is = (struct input_stream *) vfile->closure;
+ return is->size;
+}
+
+static long
+audiofile_file_tell(AFvirtualfile *vfile)
+{
+ struct input_stream *is = (struct input_stream *) vfile->closure;
+ return is->offset;
+}
+
+static void
+audiofile_file_destroy(AFvirtualfile *vfile)
+{
+ assert(vfile->closure != NULL);
+
+ vfile->closure = NULL;
+}
+
+static long
+audiofile_file_seek(AFvirtualfile *vfile, long offset, int is_relative)
+{
+ struct input_stream *is = (struct input_stream *) vfile->closure;
+ int whence = (is_relative ? SEEK_CUR : SEEK_SET);
+ if (input_stream_seek(is, offset, whence, NULL)) {
+ return is->offset;
+ } else {
+ return -1;
+ }
+}
+
+static AFvirtualfile *
+setup_virtual_fops(struct input_stream *stream)
+{
+ AFvirtualfile *vf = g_malloc(sizeof(AFvirtualfile));
+ vf->closure = stream;
+ vf->write = NULL;
+ vf->read = audiofile_file_read;
+ vf->length = audiofile_file_length;
+ vf->destroy = audiofile_file_destroy;
+ vf->seek = audiofile_file_seek;
+ vf->tell = audiofile_file_tell;
+ return vf;
+}
+
+static enum sample_format
+audiofile_bits_to_sample_format(int bits)
+{
+ switch (bits) {
+ case 8:
+ return SAMPLE_FORMAT_S8;
+
+ case 16:
+ return SAMPLE_FORMAT_S16;
+
+ case 24:
+ return SAMPLE_FORMAT_S24_P32;
+
+ case 32:
+ return SAMPLE_FORMAT_S32;
+ }
+
+ return SAMPLE_FORMAT_UNDEFINED;
+}
+
+static enum sample_format
+audiofile_setup_sample_format(AFfilehandle af_fp)
+{
+ int fs, bits;
+
+ afGetSampleFormat(af_fp, AF_DEFAULT_TRACK, &fs, &bits);
+ if (!audio_valid_sample_format(audiofile_bits_to_sample_format(bits))) {
+ g_debug("input file has %d bit samples, converting to 16",
+ bits);
+ bits = 16;
+ }
+
+ afSetVirtualSampleFormat(af_fp, AF_DEFAULT_TRACK,
+ AF_SAMPFMT_TWOSCOMP, bits);
+ afGetVirtualSampleFormat(af_fp, AF_DEFAULT_TRACK, &fs, &bits);
+
+ return audiofile_bits_to_sample_format(bits);
+}
+
+static void
+audiofile_stream_decode(struct decoder *decoder, struct input_stream *is)
+{
+ GError *error = NULL;
+ AFvirtualfile *vf;
+ int fs, frame_count;
+ AFfilehandle af_fp;
+ struct audio_format audio_format;
+ float total_time;
+ uint16_t bit_rate;
+ int ret;
+ char chunk[CHUNK_SIZE];
+ enum decoder_command cmd;
+
+ if (!is->seekable) {
+ g_warning("not seekable");
+ return;
+ }
+
+ vf = setup_virtual_fops(is);
+
+ af_fp = afOpenVirtualFile(vf, "r", NULL);
+ if (af_fp == AF_NULL_FILEHANDLE) {
+ g_warning("failed to input stream\n");
+ return;
+ }
+
+ if (!audio_format_init_checked(&audio_format,
+ afGetRate(af_fp, AF_DEFAULT_TRACK),
+ audiofile_setup_sample_format(af_fp),
+ afGetVirtualChannels(af_fp, AF_DEFAULT_TRACK),
+ &error)) {
+ g_warning("%s", error->message);
+ g_error_free(error);
+ afCloseFile(af_fp);
+ return;
+ }
+
+ frame_count = afGetFrameCount(af_fp, AF_DEFAULT_TRACK);
+
+ total_time = ((float)frame_count / (float)audio_format.sample_rate);
+
+ bit_rate = (uint16_t)(is->size * 8.0 / total_time / 1000.0 + 0.5);
+
+ fs = (int)afGetVirtualFrameSize(af_fp, AF_DEFAULT_TRACK, 1);
+
+ decoder_initialized(decoder, &audio_format, true, total_time);
+
+ do {
+ ret = afReadFrames(af_fp, AF_DEFAULT_TRACK, chunk,
+ CHUNK_SIZE / fs);
+ if (ret <= 0)
+ break;
+
+ cmd = decoder_data(decoder, NULL,
+ chunk, ret * fs,
+ bit_rate);
+
+ if (cmd == DECODE_COMMAND_SEEK) {
+ AFframecount frame = decoder_seek_where(decoder) *
+ audio_format.sample_rate;
+ afSeekFrame(af_fp, AF_DEFAULT_TRACK, frame);
+
+ decoder_command_finished(decoder);
+ cmd = DECODE_COMMAND_NONE;
+ }
+ } while (cmd == DECODE_COMMAND_NONE);
+
+ afCloseFile(af_fp);
+}
+
+static struct tag *audiofile_tag_dup(const char *file)
+{
+ struct tag *ret = NULL;
+ int total_time = audiofile_get_duration(file);
+
+ if (total_time >= 0) {
+ ret = tag_new();
+ ret->time = total_time;
+ } else {
+ g_debug("Failed to get total song time from: %s\n",
+ file);
+ }
+
+ return ret;
+}
+
+static const char *const audiofile_suffixes[] = {
+ "wav", "au", "aiff", "aif", NULL
+};
+
+static const char *const audiofile_mime_types[] = {
+ "audio/x-wav",
+ "audio/x-aiff",
+ NULL
+};
+
+const struct decoder_plugin audiofile_decoder_plugin = {
+ .name = "audiofile",
+ .stream_decode = audiofile_stream_decode,
+ .tag_dup = audiofile_tag_dup,
+ .suffixes = audiofile_suffixes,
+ .mime_types = audiofile_mime_types,
+};