2005-02-01 03:00:25 +01:00
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/* the Music Player Daemon (MPD)
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2007-04-05 05:22:33 +02:00
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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2005-02-01 03:00:25 +01:00
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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2008-08-26 08:27:04 +02:00
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#include "../decoder_api.h"
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2005-02-01 03:00:25 +01:00
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#include "../utils.h"
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#include "../log.h"
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2005-07-30 12:28:43 +02:00
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#include <mpcdec/mpcdec.h>
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2005-02-01 03:00:25 +01:00
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typedef struct _MpcCallbackData {
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2008-10-26 19:54:57 +01:00
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struct input_stream *inStream;
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2008-08-26 08:27:07 +02:00
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struct decoder *decoder;
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2005-02-01 03:00:25 +01:00
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} MpcCallbackData;
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2006-07-20 18:02:40 +02:00
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static mpc_int32_t mpc_read_cb(void *vdata, void *ptr, mpc_int32_t size)
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{
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MpcCallbackData *data = (MpcCallbackData *) vdata;
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2008-08-26 08:27:14 +02:00
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return decoder_read(data->decoder, data->inStream, ptr, size);
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2005-02-01 03:00:25 +01:00
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}
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2006-07-20 18:02:40 +02:00
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static mpc_bool_t mpc_seek_cb(void *vdata, mpc_int32_t offset)
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{
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MpcCallbackData *data = (MpcCallbackData *) vdata;
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2005-02-01 03:00:25 +01:00
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2006-07-20 18:02:40 +02:00
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return seekInputStream(data->inStream, offset, SEEK_SET) < 0 ? 0 : 1;
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2005-02-01 03:00:25 +01:00
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}
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2006-07-20 18:02:40 +02:00
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static mpc_int32_t mpc_tell_cb(void *vdata)
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{
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MpcCallbackData *data = (MpcCallbackData *) vdata;
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2005-02-01 03:00:25 +01:00
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return (long)(data->inStream->offset);
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}
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2006-07-20 18:02:40 +02:00
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static mpc_bool_t mpc_canseek_cb(void *vdata)
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{
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MpcCallbackData *data = (MpcCallbackData *) vdata;
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2005-02-01 03:00:25 +01:00
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return data->inStream->seekable;
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}
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2006-07-20 18:02:40 +02:00
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static mpc_int32_t mpc_getsize_cb(void *vdata)
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{
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MpcCallbackData *data = (MpcCallbackData *) vdata;
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2005-02-01 03:00:25 +01:00
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return data->inStream->size;
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}
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2006-07-15 15:42:57 +02:00
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/* this _looks_ performance-critical, don't de-inline -- eric */
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2008-09-29 15:49:29 +02:00
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static inline int16_t convertSample(MPC_SAMPLE_FORMAT sample)
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2006-07-20 18:02:40 +02:00
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{
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2005-02-01 04:20:16 +01:00
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/* only doing 16-bit audio for now */
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2008-09-29 15:49:29 +02:00
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int32_t val;
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2005-02-01 04:20:16 +01:00
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2006-07-20 18:02:40 +02:00
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const int clip_min = -1 << (16 - 1);
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const int clip_max = (1 << (16 - 1)) - 1;
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2005-02-01 04:20:16 +01:00
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#ifdef MPC_FIXED_POINT
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const int shift = 16 - MPC_FIXED_POINT_SCALE_SHIFT;
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2006-08-07 23:23:03 +02:00
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if (sample > 0) {
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2005-02-01 04:20:16 +01:00
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sample <<= shift;
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2006-07-20 18:02:40 +02:00
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} else if (shift < 0) {
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2005-02-01 04:20:16 +01:00
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sample >>= -shift;
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}
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val = sample;
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#else
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const int float_scale = 1 << (16 - 1);
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val = sample * float_scale;
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#endif
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2006-07-20 18:02:40 +02:00
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if (val < clip_min)
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val = clip_min;
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else if (val > clip_max)
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val = clip_max;
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2005-02-01 04:20:16 +01:00
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return val;
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}
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2008-10-26 19:54:57 +01:00
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static int
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mpc_decode(struct decoder *mpd_decoder, struct input_stream *inStream)
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2005-02-01 03:00:25 +01:00
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{
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mpc_decoder decoder;
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mpc_reader reader;
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mpc_streaminfo info;
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2008-09-07 19:19:55 +02:00
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struct audio_format audio_format;
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2005-02-01 03:00:25 +01:00
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MpcCallbackData data;
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2005-02-01 04:20:16 +01:00
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MPC_SAMPLE_FORMAT sample_buffer[MPC_DECODER_BUFFER_LENGTH];
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2005-02-01 03:00:25 +01:00
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int eof = 0;
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long ret;
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#define MPC_CHUNK_SIZE 4096
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char chunk[MPC_CHUNK_SIZE];
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int chunkpos = 0;
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long bitRate = 0;
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2008-09-29 15:49:29 +02:00
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int16_t *s16 = (int16_t *) chunk;
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2005-02-01 04:20:16 +01:00
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unsigned long samplePos = 0;
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mpc_uint32_t vbrUpdateAcc;
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mpc_uint32_t vbrUpdateBits;
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2008-01-26 13:46:21 +01:00
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float total_time;
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2005-02-01 04:20:16 +01:00
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int i;
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2006-07-20 18:02:40 +02:00
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ReplayGainInfo *replayGainInfo = NULL;
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2005-02-01 03:00:25 +01:00
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2006-07-20 18:02:40 +02:00
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data.inStream = inStream;
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2008-08-26 08:27:07 +02:00
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data.decoder = mpd_decoder;
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2005-02-01 03:00:25 +01:00
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reader.read = mpc_read_cb;
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reader.seek = mpc_seek_cb;
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reader.tell = mpc_tell_cb;
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reader.get_size = mpc_getsize_cb;
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reader.canseek = mpc_canseek_cb;
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reader.data = &data;
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mpc_streaminfo_init(&info);
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2006-07-20 18:02:40 +02:00
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if ((ret = mpc_streaminfo_read(&info, &reader)) != ERROR_CODE_OK) {
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2008-08-26 08:27:07 +02:00
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if (decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP) {
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2007-08-27 23:03:22 +02:00
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ERROR("Not a valid musepack stream\n");
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2005-02-01 06:26:37 +01:00
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return -1;
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2006-07-20 18:02:40 +02:00
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}
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return 0;
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2005-02-01 03:00:25 +01:00
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}
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mpc_decoder_setup(&decoder, &reader);
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2005-02-01 14:22:58 +01:00
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2006-07-20 18:02:40 +02:00
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if (!mpc_decoder_initialize(&decoder, &info)) {
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2008-08-26 08:27:07 +02:00
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if (decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP) {
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2007-08-27 23:03:22 +02:00
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ERROR("Not a valid musepack stream\n");
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2008-01-01 04:01:58 +01:00
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return -1;
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2006-07-20 18:02:40 +02:00
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}
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2008-01-01 04:01:58 +01:00
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return 0;
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2005-02-01 03:00:25 +01:00
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}
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2006-07-20 18:02:40 +02:00
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2008-08-26 08:27:05 +02:00
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audio_format.bits = 16;
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audio_format.channels = info.channels;
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2008-10-10 14:40:54 +02:00
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audio_format.sample_rate = info.sample_freq;
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2005-02-01 03:00:25 +01:00
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2005-02-02 05:05:19 +01:00
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replayGainInfo = newReplayGainInfo();
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2005-03-07 02:30:29 +01:00
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replayGainInfo->albumGain = info.gain_album * 0.01;
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replayGainInfo->albumPeak = info.peak_album / 32767.0;
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replayGainInfo->trackGain = info.gain_title * 0.01;
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replayGainInfo->trackPeak = info.peak_title / 32767.0;
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2005-02-02 05:05:19 +01:00
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2008-08-26 08:27:05 +02:00
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decoder_initialized(mpd_decoder, &audio_format,
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mpc_streaminfo_get_length(&info));
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2005-02-01 06:26:37 +01:00
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2006-07-20 18:02:40 +02:00
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while (!eof) {
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2008-08-26 08:27:07 +02:00
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if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) {
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2008-08-26 08:27:07 +02:00
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samplePos = decoder_seek_where(mpd_decoder) *
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2008-10-10 14:40:54 +02:00
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audio_format.sample_rate;
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2006-07-20 18:02:40 +02:00
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if (mpc_decoder_seek_sample(&decoder, samplePos)) {
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2008-08-26 08:27:05 +02:00
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decoder_clear(mpd_decoder);
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2008-09-29 15:49:29 +02:00
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s16 = (int16_t *) chunk;
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2006-07-20 18:02:40 +02:00
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chunkpos = 0;
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2008-08-26 08:27:07 +02:00
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decoder_command_finished(mpd_decoder);
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2006-07-20 18:02:40 +02:00
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} else
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2008-08-26 08:27:07 +02:00
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decoder_seek_error(mpd_decoder);
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2005-02-01 03:00:25 +01:00
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}
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2005-02-01 14:22:58 +01:00
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2005-08-07 12:05:57 +02:00
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vbrUpdateAcc = 0;
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vbrUpdateBits = 0;
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2005-02-01 06:26:37 +01:00
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ret = mpc_decoder_decode(&decoder, sample_buffer,
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2006-07-20 18:02:40 +02:00
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&vbrUpdateAcc, &vbrUpdateBits);
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2005-02-01 03:00:25 +01:00
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2008-08-26 08:27:07 +02:00
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if (ret <= 0 || decoder_get_command(mpd_decoder) == DECODE_COMMAND_STOP) {
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2005-02-01 03:00:25 +01:00
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eof = 1;
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break;
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}
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2005-02-01 04:20:16 +01:00
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samplePos += ret;
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2005-02-01 03:00:25 +01:00
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2005-02-01 04:20:16 +01:00
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/* ret is in samples, and we have stereo */
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ret *= 2;
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2006-07-20 18:02:40 +02:00
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for (i = 0; i < ret; i++) {
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2005-02-01 04:20:16 +01:00
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/* 16 bit audio again */
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*s16 = convertSample(sample_buffer[i]);
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chunkpos += 2;
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s16++;
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2006-07-20 18:02:40 +02:00
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if (chunkpos >= MPC_CHUNK_SIZE) {
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2008-01-26 13:46:21 +01:00
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total_time = ((float)samplePos) /
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2008-10-10 14:40:54 +02:00
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audio_format.sample_rate;
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2006-07-20 18:02:40 +02:00
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bitRate = vbrUpdateBits *
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2008-10-10 14:40:54 +02:00
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audio_format.sample_rate / 1152 / 1000;
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2006-07-20 18:02:40 +02:00
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2008-08-26 08:27:05 +02:00
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decoder_data(mpd_decoder, inStream,
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inStream->seekable,
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chunk, chunkpos,
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total_time,
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bitRate, replayGainInfo);
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2005-02-02 05:05:19 +01:00
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2005-02-01 04:20:16 +01:00
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chunkpos = 0;
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2008-09-29 15:49:29 +02:00
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s16 = (int16_t *) chunk;
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2008-08-26 08:27:07 +02:00
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if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_STOP) {
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2005-02-02 03:21:58 +01:00
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eof = 1;
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break;
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}
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2005-02-01 04:20:16 +01:00
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}
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2005-02-01 03:00:25 +01:00
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}
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}
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2008-08-26 08:27:07 +02:00
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if (decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP &&
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chunkpos > 0) {
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2008-10-10 14:40:54 +02:00
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total_time = ((float)samplePos) / audio_format.sample_rate;
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2005-02-01 04:20:16 +01:00
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2006-07-20 18:02:40 +02:00
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bitRate =
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2008-10-10 14:40:54 +02:00
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vbrUpdateBits * audio_format.sample_rate / 1152 / 1000;
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2005-02-01 04:20:16 +01:00
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2008-08-26 08:27:05 +02:00
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decoder_data(mpd_decoder, NULL, inStream->seekable,
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chunk, chunkpos, total_time, bitRate,
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replayGainInfo);
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2005-02-01 03:00:25 +01:00
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}
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2008-08-26 08:27:05 +02:00
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decoder_flush(mpd_decoder);
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2005-02-02 03:21:58 +01:00
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2005-02-02 05:05:19 +01:00
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freeReplayGainInfo(replayGainInfo);
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2005-02-01 03:00:25 +01:00
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return 0;
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}
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2006-07-20 18:02:40 +02:00
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static float mpcGetTime(char *file)
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{
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2008-10-26 19:54:57 +01:00
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struct input_stream inStream;
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2008-01-26 13:46:21 +01:00
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float total_time = -1;
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2006-07-20 18:02:40 +02:00
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2005-03-07 01:51:21 +01:00
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mpc_reader reader;
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mpc_streaminfo info;
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MpcCallbackData data;
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2006-07-20 18:02:40 +02:00
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data.inStream = &inStream;
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2008-08-26 08:27:07 +02:00
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data.decoder = NULL;
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2005-03-07 01:51:21 +01:00
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reader.read = mpc_read_cb;
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reader.seek = mpc_seek_cb;
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reader.tell = mpc_tell_cb;
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reader.get_size = mpc_getsize_cb;
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reader.canseek = mpc_canseek_cb;
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reader.data = &data;
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mpc_streaminfo_init(&info);
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2006-07-20 18:02:40 +02:00
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if (openInputStream(&inStream, file) < 0) {
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2005-09-08 23:08:02 +02:00
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DEBUG("mpcGetTime: Failed to open file: %s\n", file);
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return -1;
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}
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2006-07-20 18:02:40 +02:00
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if (mpc_streaminfo_read(&info, &reader) != ERROR_CODE_OK) {
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2005-03-07 01:51:21 +01:00
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closeInputStream(&inStream);
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return -1;
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}
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2008-01-26 13:46:21 +01:00
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total_time = mpc_streaminfo_get_length(&info);
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2005-03-07 01:51:21 +01:00
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closeInputStream(&inStream);
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2008-01-26 13:46:21 +01:00
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return total_time;
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2005-03-07 01:51:21 +01:00
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}
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2008-08-29 09:38:11 +02:00
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static struct tag *mpcTagDup(char *file)
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2006-07-20 18:02:40 +02:00
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{
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2008-08-29 09:38:11 +02:00
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struct tag *ret = NULL;
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2008-01-26 13:46:21 +01:00
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float total_time = mpcGetTime(file);
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2005-02-01 03:00:25 +01:00
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2008-01-26 13:46:21 +01:00
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if (total_time < 0) {
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2006-07-20 18:02:40 +02:00
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DEBUG("mpcTagDup: Failed to get Songlength of file: %s\n",
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file);
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return NULL;
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2005-09-08 23:08:02 +02:00
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}
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2005-02-01 03:00:25 +01:00
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2008-08-29 09:38:21 +02:00
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ret = tag_ape_load(file);
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2006-07-20 18:02:40 +02:00
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if (!ret)
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2008-08-29 09:38:21 +02:00
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ret = tag_id3_load(file);
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2006-07-20 18:02:40 +02:00
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if (!ret)
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2008-08-29 09:38:21 +02:00
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ret = tag_new();
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2008-01-26 13:46:21 +01:00
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ret->time = total_time;
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2005-02-01 03:00:25 +01:00
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|
2006-07-20 18:02:40 +02:00
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return ret;
|
2005-02-01 03:00:25 +01:00
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}
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|
2008-02-05 11:17:33 +01:00
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static const char *mpcSuffixes[] = { "mpc", NULL };
|
2005-02-01 03:00:25 +01:00
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2008-08-26 08:27:08 +02:00
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struct decoder_plugin mpcPlugin = {
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2008-09-29 15:55:17 +02:00
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.name = "mpc",
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.stream_decode = mpc_decode,
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.tag_dup = mpcTagDup,
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.stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
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.suffixes = mpcSuffixes,
|
2005-02-01 03:00:25 +01:00
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};
|