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-rw-r--r--src/decoder/MpcdecDecoderPlugin.cxx280
1 files changed, 0 insertions, 280 deletions
diff --git a/src/decoder/MpcdecDecoderPlugin.cxx b/src/decoder/MpcdecDecoderPlugin.cxx
deleted file mode 100644
index dc258623c..000000000
--- a/src/decoder/MpcdecDecoderPlugin.cxx
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * Copyright (C) 2003-2013 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 "MpcdecDecoderPlugin.hxx"
-#include "DecoderAPI.hxx"
-#include "InputStream.hxx"
-#include "CheckAudioFormat.hxx"
-#include "tag/TagHandler.hxx"
-#include "util/Error.hxx"
-#include "util/Domain.hxx"
-#include "util/Macros.hxx"
-#include "Log.hxx"
-
-#include <mpc/mpcdec.h>
-
-#include <assert.h>
-#include <unistd.h>
-#include <math.h>
-
-struct mpc_decoder_data {
- InputStream &is;
- Decoder *decoder;
-
- mpc_decoder_data(InputStream &_is, Decoder *_decoder)
- :is(_is), decoder(_decoder) {}
-};
-
-static constexpr Domain mpcdec_domain("mpcdec");
-
-static mpc_int32_t
-mpc_read_cb(mpc_reader *reader, void *ptr, mpc_int32_t size)
-{
- struct mpc_decoder_data *data =
- (struct mpc_decoder_data *)reader->data;
-
- return decoder_read(data->decoder, data->is, ptr, size);
-}
-
-static mpc_bool_t
-mpc_seek_cb(mpc_reader *reader, mpc_int32_t offset)
-{
- struct mpc_decoder_data *data =
- (struct mpc_decoder_data *)reader->data;
-
- return data->is.LockSeek(offset, SEEK_SET, IgnoreError());
-}
-
-static mpc_int32_t
-mpc_tell_cb(mpc_reader *reader)
-{
- struct mpc_decoder_data *data =
- (struct mpc_decoder_data *)reader->data;
-
- return (long)data->is.GetOffset();
-}
-
-static mpc_bool_t
-mpc_canseek_cb(mpc_reader *reader)
-{
- struct mpc_decoder_data *data =
- (struct mpc_decoder_data *)reader->data;
-
- return data->is.IsSeekable();
-}
-
-static mpc_int32_t
-mpc_getsize_cb(mpc_reader *reader)
-{
- struct mpc_decoder_data *data =
- (struct mpc_decoder_data *)reader->data;
-
- return data->is.GetSize();
-}
-
-/* this _looks_ performance-critical, don't de-inline -- eric */
-static inline int32_t
-mpc_to_mpd_sample(MPC_SAMPLE_FORMAT sample)
-{
- /* only doing 16-bit audio for now */
- int32_t val;
-
- enum {
- bits = 24,
- };
-
- const int clip_min = -1 << (bits - 1);
- const int clip_max = (1 << (bits - 1)) - 1;
-
-#ifdef MPC_FIXED_POINT
- const int shift = bits - MPC_FIXED_POINT_SCALE_SHIFT;
-
- if (shift < 0)
- val = sample >> -shift;
- else
- val = sample << shift;
-#else
- const int float_scale = 1 << (bits - 1);
-
- val = sample * float_scale;
-#endif
-
- if (val < clip_min)
- val = clip_min;
- else if (val > clip_max)
- val = clip_max;
-
- return val;
-}
-
-static void
-mpc_to_mpd_buffer(int32_t *dest, const MPC_SAMPLE_FORMAT *src,
- unsigned num_samples)
-{
- while (num_samples-- > 0)
- *dest++ = mpc_to_mpd_sample(*src++);
-}
-
-static void
-mpcdec_decode(Decoder &mpd_decoder, InputStream &is)
-{
- MPC_SAMPLE_FORMAT sample_buffer[MPC_DECODER_BUFFER_LENGTH];
-
- mpc_decoder_data data(is, &mpd_decoder);
-
- mpc_reader reader;
- reader.read = mpc_read_cb;
- reader.seek = mpc_seek_cb;
- reader.tell = mpc_tell_cb;
- reader.get_size = mpc_getsize_cb;
- reader.canseek = mpc_canseek_cb;
- reader.data = &data;
-
- mpc_demux *demux = mpc_demux_init(&reader);
- if (demux == nullptr) {
- if (decoder_get_command(mpd_decoder) != DecoderCommand::STOP)
- LogWarning(mpcdec_domain,
- "Not a valid musepack stream");
- return;
- }
-
- mpc_streaminfo info;
- mpc_demux_get_info(demux, &info);
-
- Error error;
- AudioFormat audio_format;
- if (!audio_format_init_checked(audio_format, info.sample_freq,
- SampleFormat::S24_P32,
- info.channels, error)) {
- LogError(error);
- mpc_demux_exit(demux);
- return;
- }
-
- ReplayGainInfo rgi;
- rgi.Clear();
- rgi.tuples[REPLAY_GAIN_ALBUM].gain = MPC_OLD_GAIN_REF - (info.gain_album / 256.);
- rgi.tuples[REPLAY_GAIN_ALBUM].peak = pow(10, info.peak_album / 256. / 20) / 32767;
- rgi.tuples[REPLAY_GAIN_TRACK].gain = MPC_OLD_GAIN_REF - (info.gain_title / 256.);
- rgi.tuples[REPLAY_GAIN_TRACK].peak = pow(10, info.peak_title / 256. / 20) / 32767;
-
- decoder_replay_gain(mpd_decoder, &rgi);
-
- decoder_initialized(mpd_decoder, audio_format,
- is.IsSeekable(),
- mpc_streaminfo_get_length(&info));
-
- DecoderCommand cmd = DecoderCommand::NONE;
- do {
- if (cmd == DecoderCommand::SEEK) {
- mpc_int64_t where = decoder_seek_where(mpd_decoder) *
- audio_format.sample_rate;
- bool success;
-
- success = mpc_demux_seek_sample(demux, where)
- == MPC_STATUS_OK;
- if (success)
- decoder_command_finished(mpd_decoder);
- else
- decoder_seek_error(mpd_decoder);
- }
-
- mpc_uint32_t vbr_update_bits = 0;
-
- mpc_frame_info frame;
- frame.buffer = (MPC_SAMPLE_FORMAT *)sample_buffer;
- mpc_status status = mpc_demux_decode(demux, &frame);
- if (status != MPC_STATUS_OK) {
- LogWarning(mpcdec_domain,
- "Failed to decode sample");
- break;
- }
-
- if (frame.bits == -1)
- break;
-
- mpc_uint32_t ret = frame.samples;
- ret *= info.channels;
-
- int32_t chunk[ARRAY_SIZE(sample_buffer)];
- mpc_to_mpd_buffer(chunk, sample_buffer, ret);
-
- long bit_rate = vbr_update_bits * audio_format.sample_rate
- / 1152 / 1000;
-
- cmd = decoder_data(mpd_decoder, is,
- chunk, ret * sizeof(chunk[0]),
- bit_rate);
- } while (cmd != DecoderCommand::STOP);
-
- mpc_demux_exit(demux);
-}
-
-static float
-mpcdec_get_file_duration(InputStream &is)
-{
- mpc_decoder_data data(is, nullptr);
-
- mpc_reader reader;
- reader.read = mpc_read_cb;
- reader.seek = mpc_seek_cb;
- reader.tell = mpc_tell_cb;
- reader.get_size = mpc_getsize_cb;
- reader.canseek = mpc_canseek_cb;
- reader.data = &data;
-
- mpc_demux *demux = mpc_demux_init(&reader);
- if (demux == nullptr)
- return -1;
-
- mpc_streaminfo info;
- mpc_demux_get_info(demux, &info);
- mpc_demux_exit(demux);
-
- return mpc_streaminfo_get_length(&info);
-}
-
-static bool
-mpcdec_scan_stream(InputStream &is,
- const struct tag_handler *handler, void *handler_ctx)
-{
- float total_time = mpcdec_get_file_duration(is);
-
- if (total_time < 0)
- return false;
-
- tag_handler_invoke_duration(handler, handler_ctx, total_time);
- return true;
-}
-
-static const char *const mpcdec_suffixes[] = { "mpc", nullptr };
-
-const struct DecoderPlugin mpcdec_decoder_plugin = {
- "mpcdec",
- nullptr,
- nullptr,
- mpcdec_decode,
- nullptr,
- nullptr,
- mpcdec_scan_stream,
- nullptr,
- mpcdec_suffixes,
- nullptr,
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 21:00:17 +0000