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DecoderControl: convert functions to methods

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This commit is contained in:
Max Kellermann
2013-09-27 09:18:03 +02:00
parent ada67a6a4f
commit ef663810a2
2 changed files with 52 additions and 40 deletions
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45
src/DecoderControl.cxx
View File

@@ -48,41 +48,6 @@ decoder_control::~decoder_control()
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 Song *_song) const
{
@@ -119,7 +84,7 @@ decoder_control::Start(Song *_song,
buffer = &_buffer;
pipe = &_pipe;
dc_command(this, DECODE_COMMAND_START);
LockSynchronousCommand(DECODE_COMMAND_START);
}
void
@@ -132,10 +97,10 @@ decoder_control::Stop()
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);
SynchronousCommandLocked(DECODE_COMMAND_STOP);
if (state != DECODE_STATE_STOP && state != DECODE_STATE_ERROR)
dc_command_locked(this, DECODE_COMMAND_STOP);
SynchronousCommandLocked(DECODE_COMMAND_STOP);
Unlock();
}
@@ -152,7 +117,7 @@ decoder_control::Seek(double where)
seek_where = where;
seek_error = false;
dc_command(this, DECODE_COMMAND_SEEK);
SynchronousCommandLocked(DECODE_COMMAND_SEEK);
return !seek_error;
}
@@ -163,7 +128,7 @@ decoder_control::Quit()
assert(thread != nullptr);
quit = true;
dc_command_async(this, DECODE_COMMAND_STOP);
LockAsynchronousCommand(DECODE_COMMAND_STOP);
g_thread_join(thread);
thread = nullptr;

47
src/DecoderControl.hxx
View File

@@ -278,6 +278,53 @@ struct decoder_control {
return result;
}
private:
/**
* Wait for the command to be finished by the decoder thread.
*
* To be called from the client thread. Caller must lock the
* object.
*/
void WaitCommandLocked() {
while (command != DECODE_COMMAND_NONE)
WaitForDecoder();
}
/**
* Send a command to the decoder thread and synchronously wait
* for it to finish.
*
* To be called from the client thread. Caller must lock the
* object.
*/
void SynchronousCommandLocked(decoder_command cmd) {
command = cmd;
Signal();
WaitCommandLocked();
}
/**
* Send a command to the decoder thread and synchronously wait
* for it to finish.
*
* To be called from the client thread. This method locks the
* object.
*/
void LockSynchronousCommand(decoder_command cmd) {
Lock();
ClearError();
SynchronousCommandLocked(cmd);
Unlock();
}
void LockAsynchronousCommand(decoder_command cmd) {
Lock();
command = cmd;
Signal();
Unlock();
}
public:
/**
* Start the decoder.
*