SCI: Merged sfx/mixer.cpp into sfx/player/polled.cpp

svn-id: r39116

4 files changed, 161 insertions, 248 deletions

diff --git a/engines/sci/sfx/core.cpp b/engines/sci/sfx/core.cpp
index bef2b1b8b8..fc1e75eca5 100644
--- a/engines/sci/sfx/core.cpp
+++ b/engines/sci/sfx/core.cpp
@@ -28,7 +28,6 @@
 #include "sci/tools.h"
 #include "sci/sfx/iterator_internal.h"
 #include "sci/sfx/player.h"
-#include "sci/sfx/mixer.h"
 #include "sci/sfx/sci_midi.h"
 
 #include "common/system.h"
diff --git a/engines/sci/sfx/mixer.cpp b/engines/sci/sfx/mixer.cpp
deleted file mode 100644
index 8ec4f3a31e..0000000000
--- a/engines/sci/sfx/mixer.cpp
+++ /dev/null
@@ -1,204 +0,0 @@
-/* ScummVM - Graphic Adventure Engine
- *
- * ScummVM is the legal property of its developers, whose names
- * are too numerous to list here. Please refer to the COPYRIGHT
- * file distributed with this source distribution.
- *
- * 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.
- *
- * $URL$
- * $Id$
- *
- */
-
-#include "common/system.h"
-
-#include "sci/tools.h"
-#include "sci/sfx/mixer.h"
-
-#include "sound/audiostream.h"
-#include "sound/mixer.h"
-
-namespace Sci {
-
-class PCMFeedAudioStream : public Audio::AudioStream {
-protected:
-	enum FeedMode {
-		FEED_MODE_ALIVE,
-		FEED_MODE_IDLE,
-		FEED_MODE_DEAD,
-		FEED_MODE_RESTART
-	};
-
-	/* Whether feed is alive or dead. */
-	FeedMode _mode;
-
-	/* Blank gap in frames. */
-	int _gap;
-
-	/* Feed. */
-	sfx_pcm_feed_t *_feed;
-
-	/* Timestamp of next frame requested by stream driver. */
-	Audio::Timestamp _time;
-
-public:
-	PCMFeedAudioStream(sfx_pcm_feed_t *feed)
-		: _feed(feed),
-		  _time(g_system->getMillis(), feed->conf.rate) {
-
-		_feed->frame_size = (_feed->conf.stereo ? 2 : 1) * ((_feed->conf.format & SFX_PCM_FORMAT_16) ? 2 : 1);
-		_mode = FEED_MODE_ALIVE;
-		_gap = 0;
-	}
-
-	~PCMFeedAudioStream() {
-		_feed->destroy(_feed);
-	}
-
-	virtual int readBuffer(int16 *buffer, const int numSamples);
-
-	virtual bool isStereo() const { return _feed->conf.stereo; }
-	virtual int getRate() const { return _feed->conf.rate; }
-
-	virtual bool endOfData() const { return _mode == FEED_MODE_DEAD; }
-
-protected:
-	void queryTimestamp();
-};
-
-void PCMFeedAudioStream::queryTimestamp() {
-	if (_feed->get_timestamp) {
-		Audio::Timestamp stamp;
-		int val = _feed->get_timestamp(_feed, stamp);
-
-		switch (val) {
-		case PCM_FEED_TIMESTAMP:
-			_gap = stamp.frameDiff(_time);
-
-			if (_gap >= 0)
-				_mode = FEED_MODE_ALIVE;
-			else {
-				// FIXME: I don't quite understand what FEED_MODE_RESTART is for.
-				// The original DC mixer seemed to just stop and restart the stream.
-				// But why? To catch up with lagging sound?
-				//
-				// Walter says the following:
-				// "The FEED_MODE_RESTART might be there to re-sync after a debugger
-				//  session where time passes for the mixer but not for the engine.
-				//  I may have added this as a workaround for not being able to come
-				//  up with a convenient way to implement mixer->pause() and mixer->resume()
-				//  on DC."
-				// That makes some sense.
-				_mode = FEED_MODE_RESTART;
-				_time = Audio::Timestamp(g_system->getMillis(), _feed->conf.rate);
-				_gap = stamp.frameDiff(_time);
-
-				if (_gap < 0)
-					_gap = 0;
-			}
-			break;
-		case PCM_FEED_IDLE:
-			_mode = FEED_MODE_IDLE;
-			break;
-		case PCM_FEED_EMPTY:
-			_mode = FEED_MODE_DEAD;
-			_gap = 0;
-		}
-	} else {
-		_mode = FEED_MODE_DEAD;
-		_gap = 0;
-	}
-}
-
-static void U8_to_S16(byte *buf, int samples) {
-	for (int i = samples - 1; i >= 0; i--) {
-		buf[i * 2 + 1] = buf[i] - 0x80;
-		buf[i * 2] = 0;
-	}
-}
-
-int PCMFeedAudioStream::readBuffer(int16 *buffer, const int numSamples) {
-	// FIXME: If ScummVM's mixer supported timestamps, then it would pass them
-	// as a parameter to this function. But currently, it doesn't. Therefore, we
-	// create a fake timestamp based on the current time. For comparison, a real
-	// timestamp could be adjusted for pauses in sound processing. And it would
-	// be synced for all audio streams.
-	Audio::Timestamp timestamp(g_system->getMillis(), _feed->conf.rate);
-
-	int channels, frames_req;
-	int frames_recv = 0;
-
-	_time = timestamp;
-	channels = _feed->conf.stereo == SFX_PCM_MONO ? 1 : 2;
-	frames_req = numSamples / channels;
-
-	while (frames_req != frames_recv) {
-		int frames_left = frames_req - frames_recv;
-		byte *buf_pos = ((byte *)buffer) + frames_recv * channels * 2;
-
-		if (_mode == FEED_MODE_IDLE)
-			queryTimestamp();
-
-		if (_mode == FEED_MODE_IDLE || _mode == FEED_MODE_DEAD) {
-			memset(buf_pos, 0, frames_left * channels * 2);
-
-			_time = _time.addFrames(frames_left);
-			break;
-		}
-
-		if (_gap) {
-			int frames = _gap;
-
-			if (frames > frames_left)
-				frames = frames_left;
-
-			memset(buf_pos, 0, frames * channels * 2);
-
-			_gap -= frames;
-			frames_recv += frames;
-			_time = _time.addFrames(frames);
-		} else {
-			int frames = _feed->poll(_feed, buf_pos, frames_left);
-
-			if (_feed->conf.format == SFX_PCM_FORMAT_U8)
-				U8_to_S16(buf_pos, frames * channels);
-
-			frames_recv += frames;
-			_time = _time.addFrames(frames);
-
-			if (frames < frames_left)
-				queryTimestamp();
-		}
-	}
-
-	return numSamples;
-}
-
-void mixer_subscribe(sfx_pcm_feed_t *feed) {
-	if ((feed->conf.format != SFX_PCM_FORMAT_S16_NATIVE) && (feed->conf.format != SFX_PCM_FORMAT_U8)) {
-		error("[soft-mixer] Unsupported feed format %d", feed->conf.format);
-	}
-	
-	PCMFeedAudioStream *newStream = new PCMFeedAudioStream(feed);
-
-	// FIXME: Is this sound type appropriate? The mixer seems to handle music, too.
-	g_system->getMixer()->playInputStream(Audio::Mixer::kSFXSoundType, 0, newStream);
-
-	debug(2, "[soft-mixer] Subscribed %s-%x (%d Hz, %d/%x)",
-	          feed->debug_name, feed->debug_nr, feed->conf.rate, feed->conf.stereo, feed->conf.format);
-}
-
-} // End of namespace Sci
diff --git a/engines/sci/sfx/mixer.h b/engines/sci/sfx/mixer.h
deleted file mode 100644
index 955a29289f..0000000000
--- a/engines/sci/sfx/mixer.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/* ScummVM - Graphic Adventure Engine
- *
- * ScummVM is the legal property of its developers, whose names
- * are too numerous to list here. Please refer to the COPYRIGHT
- * file distributed with this source distribution.
- *
- * 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.
- *
- * $URL$
- * $Id$
- *
- */
-
-#ifndef SCI_SFX_MIXER_H
-#define SCI_SFX_MIXER_H
-
-#include "sci/sfx/sfx_pcm.h"
-
-namespace Sci {
-
-/**
- * Subscribes the mixer to a new feed.
- * @param feed	The feed to subscribe to
- */
-void mixer_subscribe(sfx_pcm_feed_t *feed);
-
-} // End of namespace Sci
-
-#endif // SCI_SFX_MIXER_H
diff --git a/engines/sci/sfx/player/polled.cpp b/engines/sci/sfx/player/polled.cpp
index a8f92f8218..fcf8868545 100644
--- a/engines/sci/sfx/player/polled.cpp
+++ b/engines/sci/sfx/player/polled.cpp
@@ -29,7 +29,9 @@
 #include "common/file.h"
 #include "sci/sfx/player.h"
 #include "sci/sfx/softseq.h"
-#include "sci/sfx/mixer.h"
+
+#include "sound/audiostream.h"
+#include "sound/mixer.h"
 
 namespace Sci {
 
@@ -50,6 +52,160 @@ static void pp_tell_synth(int buf_nr, byte *buf) {
 }
 
 
+class PCMFeedAudioStream : public Audio::AudioStream {
+protected:
+	enum FeedMode {
+		FEED_MODE_ALIVE,
+		FEED_MODE_IDLE,
+		FEED_MODE_DEAD,
+		FEED_MODE_RESTART
+	};
+
+	/* Whether feed is alive or dead. */
+	FeedMode _mode;
+
+	/* Blank gap in frames. */
+	int _gap;
+
+	/* Feed. */
+	sfx_pcm_feed_t *_feed;
+
+	/* Timestamp of next frame requested by stream driver. */
+	Audio::Timestamp _time;
+
+public:
+	PCMFeedAudioStream(sfx_pcm_feed_t *feed)
+		: _feed(feed),
+		  _time(g_system->getMillis(), feed->conf.rate) {
+
+		_feed->frame_size = (_feed->conf.stereo ? 2 : 1) * ((_feed->conf.format & SFX_PCM_FORMAT_16) ? 2 : 1);
+		_mode = FEED_MODE_ALIVE;
+		_gap = 0;
+	}
+
+	~PCMFeedAudioStream() {
+		_feed->destroy(_feed);
+	}
+
+	virtual int readBuffer(int16 *buffer, const int numSamples);
+
+	virtual bool isStereo() const { return _feed->conf.stereo; }
+	virtual int getRate() const { return _feed->conf.rate; }
+
+	virtual bool endOfData() const { return _mode == FEED_MODE_DEAD; }
+
+protected:
+	void queryTimestamp();
+};
+
+void PCMFeedAudioStream::queryTimestamp() {
+	if (_feed->get_timestamp) {
+		Audio::Timestamp stamp;
+		int val = _feed->get_timestamp(_feed, stamp);
+
+		switch (val) {
+		case PCM_FEED_TIMESTAMP:
+			_gap = stamp.frameDiff(_time);
+
+			if (_gap >= 0)
+				_mode = FEED_MODE_ALIVE;
+			else {
+				// FIXME: I don't quite understand what FEED_MODE_RESTART is for.
+				// The original DC mixer seemed to just stop and restart the stream.
+				// But why? To catch up with lagging sound?
+				//
+				// Walter says the following:
+				// "The FEED_MODE_RESTART might be there to re-sync after a debugger
+				//  session where time passes for the mixer but not for the engine.
+				//  I may have added this as a workaround for not being able to come
+				//  up with a convenient way to implement mixer->pause() and mixer->resume()
+				//  on DC."
+				// That makes some sense.
+				_mode = FEED_MODE_RESTART;
+				_time = Audio::Timestamp(g_system->getMillis(), _feed->conf.rate);
+				_gap = stamp.frameDiff(_time);
+
+				if (_gap < 0)
+					_gap = 0;
+			}
+			break;
+		case PCM_FEED_IDLE:
+			_mode = FEED_MODE_IDLE;
+			break;
+		case PCM_FEED_EMPTY:
+			_mode = FEED_MODE_DEAD;
+			_gap = 0;
+		}
+	} else {
+		_mode = FEED_MODE_DEAD;
+		_gap = 0;
+	}
+}
+
+static void U8_to_S16(byte *buf, int samples) {
+	for (int i = samples - 1; i >= 0; i--) {
+		buf[i * 2 + 1] = buf[i] - 0x80;
+		buf[i * 2] = 0;
+	}
+}
+
+int PCMFeedAudioStream::readBuffer(int16 *buffer, const int numSamples) {
+	// FIXME: If ScummVM's mixer supported timestamps, then it would pass them
+	// as a parameter to this function. But currently, it doesn't. Therefore, we
+	// create a fake timestamp based on the current time. For comparison, a real
+	// timestamp could be adjusted for pauses in sound processing. And it would
+	// be synced for all audio streams.
+	Audio::Timestamp timestamp(g_system->getMillis(), _feed->conf.rate);
+
+	int channels, frames_req;
+	int frames_recv = 0;
+
+	_time = timestamp;
+	channels = _feed->conf.stereo == SFX_PCM_MONO ? 1 : 2;
+	frames_req = numSamples / channels;
+
+	while (frames_req != frames_recv) {
+		int frames_left = frames_req - frames_recv;
+		byte *buf_pos = ((byte *)buffer) + frames_recv * channels * 2;
+
+		if (_mode == FEED_MODE_IDLE)
+			queryTimestamp();
+
+		if (_mode == FEED_MODE_IDLE || _mode == FEED_MODE_DEAD) {
+			memset(buf_pos, 0, frames_left * channels * 2);
+
+			_time = _time.addFrames(frames_left);
+			break;
+		}
+
+		if (_gap) {
+			int frames = _gap;
+
+			if (frames > frames_left)
+				frames = frames_left;
+
+			memset(buf_pos, 0, frames * channels * 2);
+
+			_gap -= frames;
+			frames_recv += frames;
+			_time = _time.addFrames(frames);
+		} else {
+			int frames = _feed->poll(_feed, buf_pos, frames_left);
+
+			if (_feed->conf.format == SFX_PCM_FORMAT_U8)
+				U8_to_S16(buf_pos, frames * channels);
+
+			frames_recv += frames;
+			_time = _time.addFrames(frames);
+
+			if (frames < frames_left)
+				queryTimestamp();
+		}
+	}
+
+	return numSamples;
+}
+
 /*----------------------*/
 /* Mixer implementation */
 /*----------------------*/
@@ -193,7 +349,10 @@ static int pp_init(ResourceManager *resmgr, int expected_latency) {
 	pcmfeed.conf = seq->pcm_conf;
 
 	seq->set_volume(seq, volume);
-	mixer_subscribe(&pcmfeed);
+
+	PCMFeedAudioStream *newStream = new PCMFeedAudioStream(&pcmfeed);
+	// FIXME: Is this sound type appropriate?
+	g_system->getMixer()->playInputStream(Audio::Mixer::kSFXSoundType, 0, newStream);
 
 	sfx_player_polled.polyphony = seq->polyphony;
 	return SFX_OK;