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-rw-r--r--src/decoder/VorbisDecoderPlugin.cxx356
1 files changed, 356 insertions, 0 deletions
diff --git a/src/decoder/VorbisDecoderPlugin.cxx b/src/decoder/VorbisDecoderPlugin.cxx
new file mode 100644
index 000000000..a4a938aa8
--- /dev/null
+++ b/src/decoder/VorbisDecoderPlugin.cxx
@@ -0,0 +1,356 @@
+/*
+ * 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 "VorbisDecoderPlugin.h"
+#include "VorbisComments.hxx"
+#include "DecoderAPI.hxx"
+#include "InputStream.hxx"
+#include "OggCodec.hxx"
+#include "util/Error.hxx"
+#include "util/UriUtil.hxx"
+#include "CheckAudioFormat.hxx"
+#include "tag/TagHandler.hxx"
+
+#ifndef HAVE_TREMOR
+#define OV_EXCLUDE_STATIC_CALLBACKS
+#include <vorbis/vorbisfile.h>
+#else
+#include <tremor/ivorbisfile.h>
+/* Macros to make Tremor's API look like libogg. Tremor always
+ returns host-byte-order 16-bit signed data, and uses integer
+ milliseconds where libogg uses double seconds.
+*/
+#define ov_read(VF, BUFFER, LENGTH, BIGENDIANP, WORD, SGNED, BITSTREAM) \
+ ov_read(VF, BUFFER, LENGTH, BITSTREAM)
+#define ov_time_total(VF, I) ((double)ov_time_total(VF, I)/1000)
+#define ov_time_tell(VF) ((double)ov_time_tell(VF)/1000)
+#define ov_time_seek_page(VF, S) (ov_time_seek_page(VF, (S)*1000))
+#endif /* HAVE_TREMOR */
+
+#include <glib.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <unistd.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "vorbis"
+
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+#define VORBIS_BIG_ENDIAN true
+#else
+#define VORBIS_BIG_ENDIAN false
+#endif
+
+struct vorbis_input_stream {
+ struct decoder *decoder;
+
+ struct input_stream *input_stream;
+ bool seekable;
+};
+
+static size_t ogg_read_cb(void *ptr, size_t size, size_t nmemb, void *data)
+{
+ struct vorbis_input_stream *vis = (struct vorbis_input_stream *)data;
+ size_t ret = decoder_read(vis->decoder, vis->input_stream,
+ ptr, size * nmemb);
+
+ errno = 0;
+
+ return ret / size;
+}
+
+static int ogg_seek_cb(void *data, ogg_int64_t offset, int whence)
+{
+ struct vorbis_input_stream *vis = (struct vorbis_input_stream *)data;
+
+ Error error;
+ return vis->seekable &&
+ (!vis->decoder || decoder_get_command(vis->decoder) != DecoderCommand::STOP) &&
+ vis->input_stream->LockSeek(offset, whence, error)
+ ? 0 : -1;
+}
+
+/* TODO: check Ogg libraries API and see if we can just not have this func */
+static int ogg_close_cb(gcc_unused void *data)
+{
+ return 0;
+}
+
+static long ogg_tell_cb(void *data)
+{
+ struct vorbis_input_stream *vis = (struct vorbis_input_stream *)data;
+
+ return (long)vis->input_stream->offset;
+}
+
+static const ov_callbacks vorbis_is_callbacks = {
+ ogg_read_cb,
+ ogg_seek_cb,
+ ogg_close_cb,
+ ogg_tell_cb,
+};
+
+static const char *
+vorbis_strerror(int code)
+{
+ switch (code) {
+ case OV_EREAD:
+ return "read error";
+
+ case OV_ENOTVORBIS:
+ return "not vorbis stream";
+
+ case OV_EVERSION:
+ return "vorbis version mismatch";
+
+ case OV_EBADHEADER:
+ return "invalid vorbis header";
+
+ case OV_EFAULT:
+ return "internal logic error";
+
+ default:
+ return "unknown error";
+ }
+}
+
+static bool
+vorbis_is_open(struct vorbis_input_stream *vis, OggVorbis_File *vf,
+ struct decoder *decoder, struct input_stream *input_stream)
+{
+ vis->decoder = decoder;
+ vis->input_stream = input_stream;
+ vis->seekable = input_stream->CheapSeeking();
+
+ int ret = ov_open_callbacks(vis, vf, NULL, 0, vorbis_is_callbacks);
+ if (ret < 0) {
+ if (decoder == NULL ||
+ decoder_get_command(decoder) == DecoderCommand::NONE)
+ g_warning("Failed to open Ogg Vorbis stream: %s",
+ vorbis_strerror(ret));
+ return false;
+ }
+
+ return true;
+}
+
+static void
+vorbis_send_comments(struct decoder *decoder, struct input_stream *is,
+ char **comments)
+{
+ Tag *tag = vorbis_comments_to_tag(comments);
+ if (!tag)
+ return;
+
+ decoder_tag(decoder, is, std::move(*tag));
+ delete tag;
+}
+
+#ifndef HAVE_TREMOR
+static void
+vorbis_interleave(float *dest, const float *const*src,
+ unsigned nframes, unsigned channels)
+{
+ for (const float *const*src_end = src + channels;
+ src != src_end; ++src, ++dest) {
+ float *d = dest;
+ for (const float *s = *src, *s_end = s + nframes;
+ s != s_end; ++s, d += channels)
+ *d = *s;
+ }
+}
+#endif
+
+/* public */
+static void
+vorbis_stream_decode(struct decoder *decoder,
+ struct input_stream *input_stream)
+{
+ if (ogg_codec_detect(decoder, input_stream) != OGG_CODEC_VORBIS)
+ return;
+
+ /* rewind the stream, because ogg_codec_detect() has
+ moved it */
+ input_stream->LockSeek(0, SEEK_SET, IgnoreError());
+
+ struct vorbis_input_stream vis;
+ OggVorbis_File vf;
+ if (!vorbis_is_open(&vis, &vf, decoder, input_stream))
+ return;
+
+ const vorbis_info *vi = ov_info(&vf, -1);
+ if (vi == NULL) {
+ g_warning("ov_info() has failed");
+ return;
+ }
+
+ Error error;
+ AudioFormat audio_format;
+ if (!audio_format_init_checked(audio_format, vi->rate,
+#ifdef HAVE_TREMOR
+ SampleFormat::S16,
+#else
+ SampleFormat::FLOAT,
+#endif
+ vi->channels, error)) {
+ g_warning("%s", error.GetMessage());
+ return;
+ }
+
+ float total_time = ov_time_total(&vf, -1);
+ if (total_time < 0)
+ total_time = 0;
+
+ decoder_initialized(decoder, audio_format, vis.seekable, total_time);
+
+#ifdef HAVE_TREMOR
+ char buffer[4096];
+#else
+ float buffer[2048];
+ const int frames_per_buffer =
+ G_N_ELEMENTS(buffer) / audio_format.channels;
+ const unsigned frame_size = sizeof(buffer[0]) * audio_format.channels;
+#endif
+
+ int prev_section = -1;
+ unsigned kbit_rate = 0;
+
+ DecoderCommand cmd = decoder_get_command(decoder);
+ do {
+ if (cmd == DecoderCommand::SEEK) {
+ double seek_where = decoder_seek_where(decoder);
+ if (0 == ov_time_seek_page(&vf, seek_where)) {
+ decoder_command_finished(decoder);
+ } else
+ decoder_seek_error(decoder);
+ }
+
+ int current_section;
+
+#ifdef HAVE_TREMOR
+ long nbytes = ov_read(&vf, buffer, sizeof(buffer),
+ VORBIS_BIG_ENDIAN, 2, 1,
+ &current_section);
+#else
+ float **per_channel;
+ long nframes = ov_read_float(&vf, &per_channel,
+ frames_per_buffer,
+ &current_section);
+ long nbytes = nframes;
+ if (nframes > 0) {
+ vorbis_interleave(buffer,
+ (const float*const*)per_channel,
+ nframes, audio_format.channels);
+ nbytes *= frame_size;
+ }
+#endif
+
+ if (nbytes == OV_HOLE) /* bad packet */
+ nbytes = 0;
+ else if (nbytes <= 0)
+ /* break on EOF or other error */
+ break;
+
+ if (current_section != prev_section) {
+ vi = ov_info(&vf, -1);
+ if (vi == NULL) {
+ g_warning("ov_info() has failed");
+ break;
+ }
+
+ if (vi->rate != (long)audio_format.sample_rate ||
+ vi->channels != (int)audio_format.channels) {
+ /* we don't support audio format
+ change yet */
+ g_warning("audio format change, stopping here");
+ break;
+ }
+
+ char **comments = ov_comment(&vf, -1)->user_comments;
+ vorbis_send_comments(decoder, input_stream, comments);
+
+ struct replay_gain_info rgi;
+ if (vorbis_comments_to_replay_gain(&rgi, comments))
+ decoder_replay_gain(decoder, &rgi);
+
+ prev_section = current_section;
+ }
+
+ long test = ov_bitrate_instant(&vf);
+ if (test > 0)
+ kbit_rate = test / 1000;
+
+ cmd = decoder_data(decoder, input_stream,
+ buffer, nbytes,
+ kbit_rate);
+ } while (cmd != DecoderCommand::STOP);
+
+ ov_clear(&vf);
+}
+
+static bool
+vorbis_scan_stream(struct input_stream *is,
+ const struct tag_handler *handler, void *handler_ctx)
+{
+ struct vorbis_input_stream vis;
+ OggVorbis_File vf;
+
+ if (!vorbis_is_open(&vis, &vf, NULL, is))
+ return false;
+
+ tag_handler_invoke_duration(handler, handler_ctx,
+ (int)(ov_time_total(&vf, -1) + 0.5));
+
+ vorbis_comments_scan(ov_comment(&vf, -1)->user_comments,
+ handler, handler_ctx);
+
+ ov_clear(&vf);
+ return true;
+}
+
+static const char *const vorbis_suffixes[] = {
+ "ogg", "oga", NULL
+};
+
+static const char *const vorbis_mime_types[] = {
+ "application/ogg",
+ "application/x-ogg",
+ "audio/ogg",
+ "audio/vorbis",
+ "audio/vorbis+ogg",
+ "audio/x-ogg",
+ "audio/x-vorbis",
+ "audio/x-vorbis+ogg",
+ NULL
+};
+
+const struct decoder_plugin vorbis_decoder_plugin = {
+ "vorbis",
+ nullptr,
+ nullptr,
+ vorbis_stream_decode,
+ nullptr,
+ nullptr,
+ vorbis_scan_stream,
+ nullptr,
+ vorbis_suffixes,
+ vorbis_mime_types
+};
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