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renamed decoder plugin sources

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Make it X_decoder_plugin.c.
This commit is contained in:
Max Kellermann
2010-01-04 21:36:33 +01:00
parent c69cc31de0
commit 9b9abff972
16 changed files with 15 additions and 15 deletions
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339
src/decoder/mpcdec_decoder_plugin.c Normal file
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/*
* 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 <mpcdec/mpcdec.h>
#else
#include <mpc/mpcdec.h>
#endif
#include <glib.h>
#include <assert.h>
#include <unistd.h>
#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,
};