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/*
* Copyright (C) 2003-2009 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.
*/
/*
* OggFLAC support (half-stolen from flac_plugin.c :))
*/
#include "config.h" /* must be first for large file support */
#include "_flac_common.h"
#include "_ogg_common.h"
#include "flac_metadata.h"
#include <glib.h>
#include <OggFLAC/seekable_stream_decoder.h>
#include <assert.h>
#include <unistd.h>
static void oggflac_cleanup(OggFLAC__SeekableStreamDecoder * decoder)
{
if (decoder)
OggFLAC__seekable_stream_decoder_delete(decoder);
}
static OggFLAC__SeekableStreamDecoderReadStatus of_read_cb(G_GNUC_UNUSED const
OggFLAC__SeekableStreamDecoder
* decoder,
FLAC__byte buf[],
unsigned *bytes,
void *fdata)
{
struct flac_data *data = (struct flac_data *) fdata;
size_t r;
r = decoder_read(data->decoder, data->input_stream,
(void *)buf, *bytes);
*bytes = r;
if (r == 0 && !input_stream_eof(data->input_stream) &&
decoder_get_command(data->decoder) == DECODE_COMMAND_NONE)
return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR;
return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK;
}
static OggFLAC__SeekableStreamDecoderSeekStatus of_seek_cb(G_GNUC_UNUSED const
OggFLAC__SeekableStreamDecoder
* decoder,
FLAC__uint64 offset,
void *fdata)
{
struct flac_data *data = (struct flac_data *) fdata;
if (!input_stream_seek(data->input_stream, offset, SEEK_SET))
return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR;
return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK;
}
static OggFLAC__SeekableStreamDecoderTellStatus of_tell_cb(G_GNUC_UNUSED const
OggFLAC__SeekableStreamDecoder
* decoder,
FLAC__uint64 *
offset, void *fdata)
{
struct flac_data *data = (struct flac_data *) fdata;
*offset = (long)(data->input_stream->offset);
return OggFLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK;
}
static OggFLAC__SeekableStreamDecoderLengthStatus of_length_cb(G_GNUC_UNUSED const
OggFLAC__SeekableStreamDecoder
* decoder,
FLAC__uint64 *
length,
void *fdata)
{
struct flac_data *data = (struct flac_data *) fdata;
if (data->input_stream->size < 0)
return OggFLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR;
*length = (size_t) (data->input_stream->size);
return OggFLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK;
}
static FLAC__bool of_EOF_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder,
void *fdata)
{
struct flac_data *data = (struct flac_data *) fdata;
return (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE &&
decoder_get_command(data->decoder) != DECODE_COMMAND_SEEK) ||
input_stream_eof(data->input_stream);
}
static void of_error_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder,
FLAC__StreamDecoderErrorStatus status, void *fdata)
{
flac_error_common_cb("oggflac", status, (struct flac_data *) fdata);
}
static void oggflacPrintErroredState(OggFLAC__SeekableStreamDecoderState state)
{
switch (state) {
case OggFLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
g_warning("oggflac allocation error\n");
break;
case OggFLAC__SEEKABLE_STREAM_DECODER_READ_ERROR:
g_warning("oggflac read error\n");
break;
case OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR:
g_warning("oggflac seek error\n");
break;
case OggFLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR:
g_warning("oggflac seekable stream error\n");
break;
case OggFLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED:
g_warning("oggflac decoder already initialized\n");
break;
case OggFLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK:
g_warning("invalid oggflac callback\n");
break;
case OggFLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED:
g_warning("oggflac decoder uninitialized\n");
break;
case OggFLAC__SEEKABLE_STREAM_DECODER_OK:
case OggFLAC__SEEKABLE_STREAM_DECODER_SEEKING:
case OggFLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM:
break;
}
}
static FLAC__StreamDecoderWriteStatus
oggflac_write_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder *decoder,
const FLAC__Frame *frame, const FLAC__int32 *const buf[],
void *vdata)
{
struct flac_data *data = (struct flac_data *) vdata;
return flac_common_write(data, frame, buf, 0);
}
/* used by TagDup */
static void of_metadata_dup_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder,
const FLAC__StreamMetadata * block, void *vdata)
{
struct flac_data *data = (struct flac_data *) vdata;
assert(data->tag != NULL);
flac_tag_apply_metadata(data->tag, NULL, block);
}
/* used by decode */
static void of_metadata_decode_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * dec,
const FLAC__StreamMetadata * block,
void *vdata)
{
flac_metadata_common_cb(block, (struct flac_data *) vdata);
}
static OggFLAC__SeekableStreamDecoder *
full_decoder_init_and_read_metadata(struct flac_data *data,
unsigned int metadata_only)
{
OggFLAC__SeekableStreamDecoder *decoder = NULL;
unsigned int s = 1;
if (!(decoder = OggFLAC__seekable_stream_decoder_new()))
return NULL;
if (metadata_only) {
s &= OggFLAC__seekable_stream_decoder_set_metadata_callback
(decoder, of_metadata_dup_cb);
s &= OggFLAC__seekable_stream_decoder_set_metadata_respond
(decoder, FLAC__METADATA_TYPE_STREAMINFO);
} else {
s &= OggFLAC__seekable_stream_decoder_set_metadata_callback
(decoder, of_metadata_decode_cb);
}
s &= OggFLAC__seekable_stream_decoder_set_read_callback(decoder,
of_read_cb);
s &= OggFLAC__seekable_stream_decoder_set_seek_callback(decoder,
of_seek_cb);
s &= OggFLAC__seekable_stream_decoder_set_tell_callback(decoder,
of_tell_cb);
s &= OggFLAC__seekable_stream_decoder_set_length_callback(decoder,
of_length_cb);
s &= OggFLAC__seekable_stream_decoder_set_eof_callback(decoder,
of_EOF_cb);
s &= OggFLAC__seekable_stream_decoder_set_write_callback(decoder,
oggflac_write_cb);
s &= OggFLAC__seekable_stream_decoder_set_metadata_respond(decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
s &= OggFLAC__seekable_stream_decoder_set_error_callback(decoder,
of_error_cb);
s &= OggFLAC__seekable_stream_decoder_set_client_data(decoder,
(void *)data);
if (!s) {
g_warning("oggflac problem before init()\n");
goto fail;
}
if (OggFLAC__seekable_stream_decoder_init(decoder) !=
OggFLAC__SEEKABLE_STREAM_DECODER_OK) {
g_warning("oggflac problem doing init()\n");
goto fail;
}
if (!OggFLAC__seekable_stream_decoder_process_until_end_of_metadata
(decoder)) {
g_warning("oggflac problem reading metadata\n");
goto fail;
}
return decoder;
fail:
oggflacPrintErroredState(OggFLAC__seekable_stream_decoder_get_state
(decoder));
OggFLAC__seekable_stream_decoder_delete(decoder);
return NULL;
}
/* public functions: */
static struct tag *
oggflac_tag_dup(const char *file)
{
struct input_stream input_stream;
OggFLAC__SeekableStreamDecoder *decoder;
struct flac_data data;
struct tag *tag;
if (!input_stream_open(&input_stream, file))
return NULL;
if (ogg_stream_type_detect(&input_stream) != FLAC) {
input_stream_close(&input_stream);
return NULL;
}
/* rewind the stream, because ogg_stream_type_detect() has
moved it */
input_stream_seek(&input_stream, 0, SEEK_SET);
flac_data_init(&data, NULL, &input_stream);
data.tag = tag_new();
/* errors here won't matter,
* data.tag will be set or unset, that's all we care about */
decoder = full_decoder_init_and_read_metadata(&data, 1);
oggflac_cleanup(decoder);
input_stream_close(&input_stream);
if (tag_is_defined(data.tag)) {
tag = data.tag;
data.tag = NULL;
} else
tag = NULL;
flac_data_deinit(&data);
return tag;
}
static void
oggflac_decode(struct decoder * mpd_decoder, struct input_stream *input_stream)
{
OggFLAC__SeekableStreamDecoder *decoder = NULL;
struct flac_data data;
if (ogg_stream_type_detect(input_stream) != FLAC)
return;
/* rewind the stream, because ogg_stream_type_detect() has
moved it */
input_stream_seek(input_stream, 0, SEEK_SET);
flac_data_init(&data, mpd_decoder, input_stream);
if (!(decoder = full_decoder_init_and_read_metadata(&data, 0))) {
goto fail;
}
if (!data.have_stream_info) {
g_warning("no STREAMINFO packet found");
goto fail;
}
if (!audio_format_valid(&data.audio_format)) {
g_warning("Invalid audio format: %u:%u:%u\n",
data.audio_format.sample_rate,
data.audio_format.bits,
data.audio_format.channels);
goto fail;
}
decoder_initialized(mpd_decoder, &data.audio_format,
input_stream->seekable,
(float)data.stream_info.total_samples /
(float)data.audio_format.sample_rate);
while (true) {
OggFLAC__seekable_stream_decoder_process_single(decoder);
if (OggFLAC__seekable_stream_decoder_get_state(decoder) !=
OggFLAC__SEEKABLE_STREAM_DECODER_OK) {
break;
}
if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) {
FLAC__uint64 seek_sample = decoder_seek_where(mpd_decoder) *
data.audio_format.sample_rate + 0.5;
if (OggFLAC__seekable_stream_decoder_seek_absolute
(decoder, seek_sample)) {
data.next_frame = seek_sample;
data.position = 0;
decoder_command_finished(mpd_decoder);
} else
decoder_seek_error(mpd_decoder);
}
}
if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_NONE) {
oggflacPrintErroredState
(OggFLAC__seekable_stream_decoder_get_state(decoder));
OggFLAC__seekable_stream_decoder_finish(decoder);
}
fail:
oggflac_cleanup(decoder);
flac_data_deinit(&data);
}
static const char *const oggflac_suffixes[] = { "ogg", "oga", NULL };
static const char *const oggflac_mime_types[] = {
"audio/x-flac+ogg",
"application/ogg",
"application/x-ogg",
NULL
};
const struct decoder_plugin oggflac_decoder_plugin = {
.name = "oggflac",
.stream_decode = oggflac_decode,
.tag_dup = oggflac_tag_dup,
.suffixes = oggflac_suffixes,
.mime_types = oggflac_mime_types
};
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