From 9b9abff97272b52f133ff23addd58b6a90a49a73 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Mon, 4 Jan 2010 21:36:33 +0100 Subject: renamed decoder plugin sources Make it X_decoder_plugin.c. --- src/decoder/mpcdec_decoder_plugin.c | 339 ++++++++++++++++++++++++++++++++++++ 1 file changed, 339 insertions(+) create mode 100644 src/decoder/mpcdec_decoder_plugin.c (limited to 'src/decoder/mpcdec_decoder_plugin.c') diff --git a/src/decoder/mpcdec_decoder_plugin.c b/src/decoder/mpcdec_decoder_plugin.c new file mode 100644 index 000000000..92f0cad84 --- /dev/null +++ b/src/decoder/mpcdec_decoder_plugin.c @@ -0,0 +1,339 @@ +/* + * 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" +#include "decoder_api.h" +#include "audio_check.h" + +#ifdef MPC_IS_OLD_API +#include +#else +#include +#endif + +#include +#include +#include + +#undef G_LOG_DOMAIN +#define G_LOG_DOMAIN "mpcdec" + +struct mpc_decoder_data { + struct input_stream *is; + struct decoder *decoder; +}; + +#ifdef MPC_IS_OLD_API +#define cb_first_arg void *vdata +#define cb_data vdata +#else +#define cb_first_arg mpc_reader *reader +#define cb_data reader->data +#endif + +static mpc_int32_t +mpc_read_cb(cb_first_arg, void *ptr, mpc_int32_t size) +{ + struct mpc_decoder_data *data = (struct mpc_decoder_data *) cb_data; + + return decoder_read(data->decoder, data->is, ptr, size); +} + +static mpc_bool_t +mpc_seek_cb(cb_first_arg, mpc_int32_t offset) +{ + struct mpc_decoder_data *data = (struct mpc_decoder_data *) cb_data; + + return input_stream_seek(data->is, offset, SEEK_SET, NULL); +} + +static mpc_int32_t +mpc_tell_cb(cb_first_arg) +{ + struct mpc_decoder_data *data = (struct mpc_decoder_data *) cb_data; + + return (long)(data->is->offset); +} + +static mpc_bool_t +mpc_canseek_cb(cb_first_arg) +{ + struct mpc_decoder_data *data = (struct mpc_decoder_data *) cb_data; + + return data->is->seekable; +} + +static mpc_int32_t +mpc_getsize_cb(cb_first_arg) +{ + struct mpc_decoder_data *data = (struct mpc_decoder_data *) cb_data; + + return data->is->size; +} + +/* 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(struct decoder *mpd_decoder, struct input_stream *is) +{ +#ifdef MPC_IS_OLD_API + mpc_decoder decoder; +#else + mpc_demux *demux; + mpc_frame_info frame; + mpc_status status; +#endif + mpc_reader reader; + mpc_streaminfo info; + GError *error = NULL; + struct audio_format audio_format; + + struct mpc_decoder_data data; + + MPC_SAMPLE_FORMAT sample_buffer[MPC_DECODER_BUFFER_LENGTH]; + + mpc_uint32_t ret; + int32_t chunk[G_N_ELEMENTS(sample_buffer)]; + long bit_rate = 0; + mpc_uint32_t vbr_update_acc; + mpc_uint32_t vbr_update_bits; + struct replay_gain_info *replay_gain_info = NULL; + enum decoder_command cmd = DECODE_COMMAND_NONE; + + data.is = is; + data.decoder = mpd_decoder; + + 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; + +#ifdef MPC_IS_OLD_API + mpc_streaminfo_init(&info); + + if ((ret = mpc_streaminfo_read(&info, &reader)) != ERROR_CODE_OK) { + if (decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP) + g_warning("Not a valid musepack stream\n"); + return; + } + + mpc_decoder_setup(&decoder, &reader); + + if (!mpc_decoder_initialize(&decoder, &info)) { + if (decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP) + g_warning("Not a valid musepack stream\n"); + return; + } +#else + demux = mpc_demux_init(&reader); + if (demux == NULL) { + if (decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP) + g_warning("Not a valid musepack stream"); + return; + } + + mpc_demux_get_info(demux, &info); +#endif + + if (!audio_format_init_checked(&audio_format, info.sample_freq, + SAMPLE_FORMAT_S24_P32, + info.channels, &error)) { + g_warning("%s", error->message); + g_error_free(error); +#ifndef MPC_IS_OLD_API + mpc_demux_exit(demux); +#endif + return; + } + + replay_gain_info = replay_gain_info_new(); + replay_gain_info->tuples[REPLAY_GAIN_ALBUM].gain = info.gain_album * 0.01; + replay_gain_info->tuples[REPLAY_GAIN_ALBUM].peak = info.peak_album / 32767.0; + replay_gain_info->tuples[REPLAY_GAIN_TRACK].gain = info.gain_title * 0.01; + replay_gain_info->tuples[REPLAY_GAIN_TRACK].peak = info.peak_title / 32767.0; + decoder_replay_gain(mpd_decoder, replay_gain_info); + replay_gain_info_free(replay_gain_info); + + decoder_initialized(mpd_decoder, &audio_format, + is->seekable, + mpc_streaminfo_get_length(&info)); + + do { + if (cmd == DECODE_COMMAND_SEEK) { + mpc_int64_t where = decoder_seek_where(mpd_decoder) * + audio_format.sample_rate; + bool success; + +#ifdef MPC_IS_OLD_API + success = mpc_decoder_seek_sample(&decoder, where); +#else + success = mpc_demux_seek_sample(demux, where) + == MPC_STATUS_OK; +#endif + if (success) + decoder_command_finished(mpd_decoder); + else + decoder_seek_error(mpd_decoder); + } + + vbr_update_acc = 0; + vbr_update_bits = 0; + +#ifdef MPC_IS_OLD_API + ret = mpc_decoder_decode(&decoder, sample_buffer, + &vbr_update_acc, &vbr_update_bits); + if (ret == 0 || ret == (mpc_uint32_t)-1) + break; +#else + frame.buffer = (MPC_SAMPLE_FORMAT *)sample_buffer; + status = mpc_demux_decode(demux, &frame); + if (status != MPC_STATUS_OK) { + g_warning("Failed to decode sample"); + break; + } + + if (frame.bits == -1) + break; + + ret = frame.samples; +#endif + + ret *= info.channels; + + mpc_to_mpd_buffer(chunk, sample_buffer, ret); + + 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 != DECODE_COMMAND_STOP); + +#ifndef MPC_IS_OLD_API + mpc_demux_exit(demux); +#endif +} + +static float +mpcdec_get_file_duration(struct input_stream *is) +{ + float total_time = -1; + + mpc_reader reader; +#ifndef MPC_IS_OLD_API + mpc_demux *demux; +#endif + mpc_streaminfo info; + struct mpc_decoder_data data; + + data.is = is; + data.decoder = NULL; + + 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; + +#ifdef MPC_IS_OLD_API + mpc_streaminfo_init(&info); + + if (mpc_streaminfo_read(&info, &reader) != ERROR_CODE_OK) + return -1; +#else + demux = mpc_demux_init(&reader); + if (demux == NULL) + return -1; + + mpc_demux_get_info(demux, &info); + mpc_demux_exit(demux); +#endif + + total_time = mpc_streaminfo_get_length(&info); + + return total_time; +} + +static struct tag * +mpcdec_stream_tag(struct input_stream *is) +{ + float total_time = mpcdec_get_file_duration(is); + struct tag *tag; + + if (total_time < 0) + return NULL; + + tag = tag_new(); + tag->time = total_time; + return tag; +} + +static const char *const mpcdec_suffixes[] = { "mpc", NULL }; + +const struct decoder_plugin mpcdec_decoder_plugin = { + .name = "mpcdec", + .stream_decode = mpcdec_decode, + .stream_tag = mpcdec_stream_tag, + .suffixes = mpcdec_suffixes, +}; 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