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-rw-r--r--src/decoder/flac_decoder_plugin.c497
1 files changed, 497 insertions, 0 deletions
diff --git a/src/decoder/flac_decoder_plugin.c b/src/decoder/flac_decoder_plugin.c
new file mode 100644
index 000000000..e89e2ea11
--- /dev/null
+++ b/src/decoder/flac_decoder_plugin.c
@@ -0,0 +1,497 @@
+/*
+ * 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" /* must be first for large file support */
+#include "_flac_common.h"
+#include "flac_compat.h"
+#include "flac_metadata.h"
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+#include "_ogg_common.h"
+#endif
+
+#include <glib.h>
+
+#include <assert.h>
+#include <unistd.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+/* this code was based on flac123, from flac-tools */
+
+static FLAC__StreamDecoderReadStatus
+flac_read_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd,
+ FLAC__byte buf[], flac_read_status_size_t *bytes,
+ void *fdata)
+{
+ struct flac_data *data = fdata;
+ size_t r;
+
+ r = decoder_read(data->decoder, data->input_stream,
+ (void *)buf, *bytes);
+ *bytes = r;
+
+ if (r == 0) {
+ if (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE ||
+ input_stream_eof(data->input_stream))
+ return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+ else
+ return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+ }
+
+ return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+}
+
+static FLAC__StreamDecoderSeekStatus
+flac_seek_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd,
+ FLAC__uint64 offset, void *fdata)
+{
+ struct flac_data *data = (struct flac_data *) fdata;
+
+ if (!data->input_stream->seekable)
+ return FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED;
+
+ if (!input_stream_seek(data->input_stream, offset, SEEK_SET, NULL))
+ return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
+
+ return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
+}
+
+static FLAC__StreamDecoderTellStatus
+flac_tell_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd,
+ FLAC__uint64 * offset, void *fdata)
+{
+ struct flac_data *data = (struct flac_data *) fdata;
+
+ if (!data->input_stream->seekable)
+ return FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED;
+
+ *offset = (long)(data->input_stream->offset);
+
+ return FLAC__STREAM_DECODER_TELL_STATUS_OK;
+}
+
+static FLAC__StreamDecoderLengthStatus
+flac_length_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd,
+ FLAC__uint64 * length, void *fdata)
+{
+ struct flac_data *data = (struct flac_data *) fdata;
+
+ if (data->input_stream->size < 0)
+ return FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED;
+
+ *length = (size_t) (data->input_stream->size);
+
+ return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
+}
+
+static FLAC__bool
+flac_eof_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd, 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
+flac_error_cb(G_GNUC_UNUSED const FLAC__StreamDecoder *fd,
+ FLAC__StreamDecoderErrorStatus status, void *fdata)
+{
+ flac_error_common_cb("flac", status, (struct flac_data *) fdata);
+}
+
+#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
+static void flacPrintErroredState(FLAC__SeekableStreamDecoderState state)
+{
+ const char *str = ""; /* "" to silence compiler warning */
+ switch (state) {
+ case FLAC__SEEKABLE_STREAM_DECODER_OK:
+ case FLAC__SEEKABLE_STREAM_DECODER_SEEKING:
+ case FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM:
+ return;
+ case FLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
+ str = "allocation error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_READ_ERROR:
+ str = "read error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR:
+ str = "seek error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR:
+ str = "seekable stream error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED:
+ str = "decoder already initialized";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK:
+ str = "invalid callback";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED:
+ str = "decoder uninitialized";
+ }
+
+ g_warning("%s\n", str);
+}
+#else /* FLAC_API_VERSION_CURRENT >= 7 */
+static void flacPrintErroredState(FLAC__StreamDecoderState state)
+{
+ const char *str = ""; /* "" to silence compiler warning */
+ switch (state) {
+ case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
+ case FLAC__STREAM_DECODER_READ_METADATA:
+ case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
+ case FLAC__STREAM_DECODER_READ_FRAME:
+ case FLAC__STREAM_DECODER_END_OF_STREAM:
+ return;
+ case FLAC__STREAM_DECODER_OGG_ERROR:
+ str = "error in the Ogg layer";
+ break;
+ case FLAC__STREAM_DECODER_SEEK_ERROR:
+ str = "seek error";
+ break;
+ case FLAC__STREAM_DECODER_ABORTED:
+ str = "decoder aborted by read";
+ break;
+ case FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
+ str = "allocation error";
+ break;
+ case FLAC__STREAM_DECODER_UNINITIALIZED:
+ str = "decoder uninitialized";
+ }
+
+ g_warning("%s\n", str);
+}
+#endif /* FLAC_API_VERSION_CURRENT >= 7 */
+
+static void flacMetadata(G_GNUC_UNUSED const FLAC__StreamDecoder * dec,
+ const FLAC__StreamMetadata * block, void *vdata)
+{
+ flac_metadata_common_cb(block, (struct flac_data *) vdata);
+}
+
+static FLAC__StreamDecoderWriteStatus
+flac_write_cb(const FLAC__StreamDecoder *dec, const FLAC__Frame *frame,
+ const FLAC__int32 *const buf[], void *vdata)
+{
+ struct flac_data *data = (struct flac_data *) vdata;
+ FLAC__uint64 nbytes = 0;
+
+ if (FLAC__stream_decoder_get_decode_position(dec, &nbytes)) {
+ if (data->position > 0 && nbytes > data->position) {
+ nbytes -= data->position;
+ data->position += nbytes;
+ } else {
+ data->position = nbytes;
+ nbytes = 0;
+ }
+ } else
+ nbytes = 0;
+
+ return flac_common_write(data, frame, buf, nbytes);
+}
+
+static struct tag *
+flac_tag_dup(const char *file)
+{
+ return flac_tag_load(file, NULL);
+}
+
+/**
+ * Some glue code around FLAC__stream_decoder_new().
+ */
+static FLAC__StreamDecoder *
+flac_decoder_new(void)
+{
+ FLAC__StreamDecoder *sd = FLAC__stream_decoder_new();
+ if (sd == NULL) {
+ g_warning("FLAC__stream_decoder_new() failed");
+ return NULL;
+ }
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+ if(!FLAC__stream_decoder_set_metadata_respond(sd, FLAC__METADATA_TYPE_VORBIS_COMMENT))
+ g_debug("FLAC__stream_decoder_set_metadata_respond() has failed");
+#endif
+
+ return sd;
+}
+
+static bool
+flac_decoder_initialize(struct flac_data *data, FLAC__StreamDecoder *sd,
+ FLAC__uint64 duration)
+{
+ data->total_frames = duration;
+
+ if (!FLAC__stream_decoder_process_until_end_of_metadata(sd)) {
+ g_warning("problem reading metadata");
+ return false;
+ }
+
+ if (data->initialized) {
+ /* done */
+ decoder_initialized(data->decoder, &data->audio_format,
+ data->input_stream->seekable,
+ (float)data->total_frames /
+ (float)data->audio_format.sample_rate);
+ return true;
+ }
+
+ if (data->input_stream->seekable)
+ /* allow the workaround below only for nonseekable
+ streams*/
+ return false;
+
+ /* no stream_info packet found; try to initialize the decoder
+ from the first frame header */
+ FLAC__stream_decoder_process_single(sd);
+ return data->initialized;
+}
+
+static void
+flac_decoder_loop(struct flac_data *data, FLAC__StreamDecoder *flac_dec,
+ FLAC__uint64 t_start, FLAC__uint64 t_end)
+{
+ struct decoder *decoder = data->decoder;
+ enum decoder_command cmd;
+
+ data->first_frame = t_start;
+
+ while (true) {
+ if (data->tag != NULL && !tag_is_empty(data->tag)) {
+ cmd = decoder_tag(data->decoder, data->input_stream,
+ data->tag);
+ tag_free(data->tag);
+ data->tag = tag_new();
+ } else
+ cmd = decoder_get_command(decoder);
+
+ if (cmd == DECODE_COMMAND_SEEK) {
+ FLAC__uint64 seek_sample = t_start +
+ decoder_seek_where(decoder) *
+ data->audio_format.sample_rate;
+ if (seek_sample >= t_start &&
+ (t_end == 0 || seek_sample <= t_end) &&
+ FLAC__stream_decoder_seek_absolute(flac_dec, seek_sample)) {
+ data->next_frame = seek_sample;
+ data->position = 0;
+ decoder_command_finished(decoder);
+ } else
+ decoder_seek_error(decoder);
+ } else if (cmd == DECODE_COMMAND_STOP ||
+ FLAC__stream_decoder_get_state(flac_dec) == FLAC__STREAM_DECODER_END_OF_STREAM)
+ break;
+
+ if (t_end != 0 && data->next_frame >= t_end)
+ /* end of this sub track */
+ break;
+
+ if (!FLAC__stream_decoder_process_single(flac_dec)) {
+ cmd = decoder_get_command(decoder);
+ if (cmd != DECODE_COMMAND_SEEK)
+ break;
+ }
+ }
+
+ if (cmd != DECODE_COMMAND_STOP) {
+ flacPrintErroredState(FLAC__stream_decoder_get_state(flac_dec));
+ FLAC__stream_decoder_finish(flac_dec);
+ }
+}
+
+static void
+flac_decode_internal(struct decoder * decoder,
+ struct input_stream *input_stream,
+ bool is_ogg)
+{
+ FLAC__StreamDecoder *flac_dec;
+ struct flac_data data;
+ const char *err = NULL;
+
+ flac_dec = flac_decoder_new();
+ if (flac_dec == NULL)
+ return;
+
+ flac_data_init(&data, decoder, input_stream);
+ data.tag = tag_new();
+
+ if (is_ogg) {
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+ FLAC__StreamDecoderInitStatus status =
+ FLAC__stream_decoder_init_ogg_stream(flac_dec,
+ flac_read_cb,
+ flac_seek_cb,
+ flac_tell_cb,
+ flac_length_cb,
+ flac_eof_cb,
+ flac_write_cb,
+ flacMetadata,
+ flac_error_cb,
+ (void *)&data);
+ if (status != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
+ err = "doing Ogg init()";
+ goto fail;
+ }
+#else
+ goto fail;
+#endif
+ } else {
+ FLAC__StreamDecoderInitStatus status =
+ FLAC__stream_decoder_init_stream(flac_dec,
+ flac_read_cb,
+ flac_seek_cb,
+ flac_tell_cb,
+ flac_length_cb,
+ flac_eof_cb,
+ flac_write_cb,
+ flacMetadata,
+ flac_error_cb,
+ (void *)&data);
+ if (status != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
+ err = "doing init()";
+ goto fail;
+ }
+ }
+
+ if (!flac_decoder_initialize(&data, flac_dec, 0)) {
+ flac_data_deinit(&data);
+ FLAC__stream_decoder_delete(flac_dec);
+ return;
+ }
+
+ flac_decoder_loop(&data, flac_dec, 0, 0);
+
+fail:
+ flac_data_deinit(&data);
+ FLAC__stream_decoder_delete(flac_dec);
+
+ if (err)
+ g_warning("%s\n", err);
+}
+
+static void
+flac_decode(struct decoder * decoder, struct input_stream *input_stream)
+{
+ flac_decode_internal(decoder, input_stream, false);
+}
+
+#ifndef HAVE_OGGFLAC
+
+static bool
+oggflac_init(G_GNUC_UNUSED const struct config_param *param)
+{
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+ return !!FLAC_API_SUPPORTS_OGG_FLAC;
+#else
+ /* disable oggflac when libflac is too old */
+ return false;
+#endif
+}
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+
+static struct tag *
+oggflac_tag_dup(const char *file)
+{
+ struct tag *ret = NULL;
+ FLAC__Metadata_Iterator *it;
+ FLAC__StreamMetadata *block;
+ FLAC__Metadata_Chain *chain = FLAC__metadata_chain_new();
+
+ if (!(FLAC__metadata_chain_read_ogg(chain, file)))
+ goto out;
+ it = FLAC__metadata_iterator_new();
+ FLAC__metadata_iterator_init(it, chain);
+
+ ret = tag_new();
+ do {
+ if (!(block = FLAC__metadata_iterator_get_block(it)))
+ break;
+
+ flac_tag_apply_metadata(ret, NULL, block);
+ } while (FLAC__metadata_iterator_next(it));
+ FLAC__metadata_iterator_delete(it);
+
+ if (!tag_is_defined(ret)) {
+ tag_free(ret);
+ ret = NULL;
+ }
+
+out:
+ FLAC__metadata_chain_delete(chain);
+ return ret;
+}
+
+static void
+oggflac_decode(struct decoder *decoder, struct input_stream *input_stream)
+{
+ 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, NULL);
+
+ flac_decode_internal(decoder, input_stream, true);
+}
+
+static const char *const oggflac_suffixes[] = { "ogg", "oga", NULL };
+static const char *const oggflac_mime_types[] = {
+ "application/ogg",
+ "application/x-ogg",
+ "audio/ogg",
+ "audio/x-flac+ogg",
+ "audio/x-ogg",
+ NULL
+};
+
+#endif /* FLAC_API_VERSION_CURRENT >= 7 */
+
+const struct decoder_plugin oggflac_decoder_plugin = {
+ .name = "oggflac",
+ .init = oggflac_init,
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+ .stream_decode = oggflac_decode,
+ .tag_dup = oggflac_tag_dup,
+ .suffixes = oggflac_suffixes,
+ .mime_types = oggflac_mime_types
+#endif
+};
+
+#endif /* HAVE_OGGFLAC */
+
+static const char *const flac_suffixes[] = { "flac", NULL };
+static const char *const flac_mime_types[] = {
+ "application/flac",
+ "application/x-flac",
+ "audio/flac",
+ "audio/x-flac",
+ NULL
+};
+
+const struct decoder_plugin flac_decoder_plugin = {
+ .name = "flac",
+ .stream_decode = flac_decode,
+ .tag_dup = flac_tag_dup,
+ .suffixes = flac_suffixes,
+ .mime_types = flac_mime_types,
+};