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/*
* 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 "DecoderControl.hxx"
#include "MusicPipe.hxx"
#include "song.h"
#include <assert.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "decoder_control"
decoder_control::decoder_control()
:thread(nullptr),
state(DECODE_STATE_STOP),
command(DECODE_COMMAND_NONE),
song(nullptr),
replay_gain_db(0), replay_gain_prev_db(0),
mixramp_start(nullptr), mixramp_end(nullptr),
mixramp_prev_end(nullptr) {}
decoder_control::~decoder_control()
{
ClearError();
if (song != NULL)
song_free(song);
g_free(mixramp_start);
g_free(mixramp_end);
g_free(mixramp_prev_end);
}
static void
dc_command_wait_locked(struct decoder_control *dc)
{
while (dc->command != DECODE_COMMAND_NONE)
dc->WaitForDecoder();
}
static void
dc_command_locked(struct decoder_control *dc, enum decoder_command cmd)
{
dc->command = cmd;
dc->Signal();
dc_command_wait_locked(dc);
}
static void
dc_command(struct decoder_control *dc, enum decoder_command cmd)
{
dc->Lock();
dc->ClearError();
dc_command_locked(dc, cmd);
dc->Unlock();
}
static void
dc_command_async(struct decoder_control *dc, enum decoder_command cmd)
{
dc->Lock();
dc->command = cmd;
dc->Signal();
dc->Unlock();
}
bool
decoder_control::IsCurrentSong(const struct song *_song) const
{
assert(_song != NULL);
switch (state) {
case DECODE_STATE_STOP:
case DECODE_STATE_ERROR:
return false;
case DECODE_STATE_START:
case DECODE_STATE_DECODE:
return song_equals(song, _song);
}
assert(false);
return false;
}
void
decoder_control::Start(struct song *_song,
unsigned _start_ms, unsigned _end_ms,
music_buffer *_buffer, music_pipe *_pipe)
{
assert(_song != NULL);
assert(_buffer != NULL);
assert(_pipe != NULL);
assert(music_pipe_empty(_pipe));
if (song != nullptr)
song_free(song);
song = _song;
start_ms = _start_ms;
end_ms = _end_ms;
buffer = _buffer;
pipe = _pipe;
dc_command(this, DECODE_COMMAND_START);
}
void
decoder_control::Stop()
{
Lock();
if (command != DECODE_COMMAND_NONE)
/* Attempt to cancel the current command. If it's too
late and the decoder thread is already executing
the old command, we'll call STOP again in this
function (see below). */
dc_command_locked(this, DECODE_COMMAND_STOP);
if (state != DECODE_STATE_STOP && state != DECODE_STATE_ERROR)
dc_command_locked(this, DECODE_COMMAND_STOP);
Unlock();
}
bool
decoder_control::Seek(double where)
{
assert(state != DECODE_STATE_START);
assert(where >= 0.0);
if (state == DECODE_STATE_STOP ||
state == DECODE_STATE_ERROR || !seekable)
return false;
seek_where = where;
seek_error = false;
dc_command(this, DECODE_COMMAND_SEEK);
return !seek_error;
}
void
decoder_control::Quit()
{
assert(thread != nullptr);
quit = true;
dc_command_async(this, DECODE_COMMAND_STOP);
g_thread_join(thread);
thread = nullptr;
}
void
decoder_control::MixRampStart(char *_mixramp_start)
{
g_free(mixramp_start);
mixramp_start = _mixramp_start;
}
void
decoder_control::MixRampEnd(char *_mixramp_end)
{
g_free(mixramp_end);
mixramp_end = _mixramp_end;
}
void
decoder_control::MixRampPrevEnd(char *_mixramp_prev_end)
{
g_free(mixramp_prev_end);
mixramp_prev_end = _mixramp_prev_end;
}
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