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-rw-r--r--engines/sci/sfx/core.cpp1
-rw-r--r--engines/sci/sfx/player/polled.cpp132
-rw-r--r--engines/sci/sfx/sfx_pcm.h47
-rw-r--r--engines/sci/sfx/test-iterator.cpp2
4 files changed, 49 insertions, 133 deletions
diff --git a/engines/sci/sfx/core.cpp b/engines/sci/sfx/core.cpp
index fc1e75eca5..dc70af6231 100644
--- a/engines/sci/sfx/core.cpp
+++ b/engines/sci/sfx/core.cpp
@@ -344,7 +344,6 @@ int sfx_play_iterator_pcm(song_iterator_t *it, song_handle_t handle) {
if (g_system->getMixer()->isReady()) {
Audio::AudioStream *newfeed = it->get_pcm_feed(it);
if (newfeed) {
-// newfeed->debug_nr = (int) handle;
g_system->getMixer()->playInputStream(Audio::Mixer::kSFXSoundType, 0, newfeed);
return 1;
}
diff --git a/engines/sci/sfx/player/polled.cpp b/engines/sci/sfx/player/polled.cpp
index fcf8868545..ad00825c72 100644
--- a/engines/sci/sfx/player/polled.cpp
+++ b/engines/sci/sfx/player/polled.cpp
@@ -52,7 +52,7 @@ static void pp_tell_synth(int buf_nr, byte *buf) {
}
-class PCMFeedAudioStream : public Audio::AudioStream {
+class PolledPlayerAudioStream : public Audio::AudioStream {
protected:
enum FeedMode {
FEED_MODE_ALIVE,
@@ -67,30 +67,28 @@ protected:
/* Blank gap in frames. */
int _gap;
- /* Feed. */
- sfx_pcm_feed_t *_feed;
+ /* Audio format. */
+ sfx_pcm_config_t _conf;
/* 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) {
+ PolledPlayerAudioStream(sfx_pcm_config_t conf)
+ : _conf(conf),
+ _time(g_system->getMillis(), 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);
+ ~PolledPlayerAudioStream() {
}
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 isStereo() const { return _conf.stereo; }
+ virtual int getRate() const { return _conf.rate; }
virtual bool endOfData() const { return _mode == FEED_MODE_DEAD; }
@@ -98,47 +96,39 @@ 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:
+void PolledPlayerAudioStream::queryTimestamp() {
+ Audio::Timestamp stamp;
+
+ if (!new_song) {
+ _mode = FEED_MODE_IDLE;
+ } else {
+ // Otherwise, we have a timestamp:
+ stamp = new_timestamp;
+ new_song = 0;
+
+ _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(), _conf.rate);
_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;
+ if (_gap < 0)
+ _gap = 0;
}
- } else {
- _mode = FEED_MODE_DEAD;
- _gap = 0;
}
}
@@ -149,19 +139,21 @@ static void U8_to_S16(byte *buf, int samples) {
}
}
-int PCMFeedAudioStream::readBuffer(int16 *buffer, const int numSamples) {
+static int ppf_poll(int frame_size, byte *dest, int size);
+
+int PolledPlayerAudioStream::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);
+ Audio::Timestamp timestamp(g_system->getMillis(), _conf.rate);
int channels, frames_req;
int frames_recv = 0;
_time = timestamp;
- channels = _feed->conf.stereo == SFX_PCM_MONO ? 1 : 2;
+ channels = _conf.stereo == SFX_PCM_MONO ? 1 : 2;
frames_req = numSamples / channels;
while (frames_req != frames_recv) {
@@ -190,9 +182,9 @@ int PCMFeedAudioStream::readBuffer(int16 *buffer, const int numSamples) {
frames_recv += frames;
_time = _time.addFrames(frames);
} else {
- int frames = _feed->poll(_feed, buf_pos, frames_left);
+ int frames = ppf_poll(channels * ((_conf.format & SFX_PCM_FORMAT_16) ? 2 : 1), buf_pos, frames_left);
- if (_feed->conf.format == SFX_PCM_FORMAT_U8)
+ if (_conf.format == SFX_PCM_FORMAT_U8)
U8_to_S16(buf_pos, frames * channels);
frames_recv += frames;
@@ -209,7 +201,7 @@ int PCMFeedAudioStream::readBuffer(int16 *buffer, const int numSamples) {
/*----------------------*/
/* Mixer implementation */
/*----------------------*/
-int ppf_poll(sfx_pcm_feed_t *self, byte *dest, int size) {
+static int ppf_poll(int frame_size, byte *dest, int size) {
int written = 0;
byte buf[4];
int buf_nr;
@@ -262,41 +254,15 @@ int ppf_poll(sfx_pcm_feed_t *self, byte *dest, int size) {
time_counter -= do_play * TIME_INC;
- seq->poll(seq, dest + written * self->frame_size, do_play);
+ seq->poll(seq, dest + written * frame_size, do_play);
written += do_play;
}
return size; /* Apparently, we wrote all that was requested */
}
-void ppf_destroy(sfx_pcm_feed_t *self) {
- /* no-op */
-}
-
-int ppf_get_timestamp(sfx_pcm_feed_t *self, Audio::Timestamp &timestamp) {
- if (!new_song)
- return PCM_FEED_IDLE;
-
- /* Otherwise, we have a timestamp: */
-
- timestamp = new_timestamp;
- new_song = 0;
- return PCM_FEED_TIMESTAMP;
-}
-
extern sfx_player_t sfx_player_polled;
-static sfx_pcm_feed_t pcmfeed = {
- ppf_poll,
- ppf_destroy,
- ppf_get_timestamp,
- NULL,
- {0, 0, 0},
- "polled-player-feed",
- 0,
- 0 /* filled in by the mixer */
-};
-
/*=======================*/
/* Player implementation */
/*=======================*/
@@ -346,11 +312,9 @@ static int pp_init(ResourceManager *resmgr, int expected_latency) {
return SFX_ERROR;
}
- pcmfeed.conf = seq->pcm_conf;
-
seq->set_volume(seq, volume);
- PCMFeedAudioStream *newStream = new PCMFeedAudioStream(&pcmfeed);
+ PolledPlayerAudioStream *newStream = new PolledPlayerAudioStream(seq->pcm_conf);
// FIXME: Is this sound type appropriate?
g_system->getMixer()->playInputStream(Audio::Mixer::kSFXSoundType, 0, newStream);
diff --git a/engines/sci/sfx/sfx_pcm.h b/engines/sci/sfx/sfx_pcm.h
index ca4d281926..6a588ba387 100644
--- a/engines/sci/sfx/sfx_pcm.h
+++ b/engines/sci/sfx/sfx_pcm.h
@@ -50,53 +50,6 @@ struct sfx_pcm_config_t {
unsigned int format; /* Sample format (SFX_PCM_FORMAT_*) */
};
-#define PCM_FEED_TIMESTAMP 0 /* New timestamp available */
-#define PCM_FEED_IDLE 1 /* No sound ATM, but new timestamp may be available later */
-#define PCM_FEED_EMPTY 2 /* Feed is finished, can be destroyed */
-
-struct sfx_pcm_feed_t {
- /* PCM feeds are sources of input for the PCM mixer. Their member functions
- ** are invoked as callbacks on demand, to provide the mixer with input it
- ** (in turn) passes on to PCM output devices.
- ** PCM feeds must explicitly register themselves with the mixer in order
- ** to be considered.
- */
-
- int (*poll)(sfx_pcm_feed_t *self, byte *dest, int size);
- /* Asks the PCM feed to write out the next stuff it would like to have written
- ** Parameters: (sfx_pcm_feed_t *) self: Self reference
- ** (byte *) dest: The destination buffer to write to
- ** (int) size: The maximum number of _frames_ (not neccessarily bytes)
- ** to write
- ** Returns : (int) The number of frames written
- ** If the number of frames written is smaller than 'size', the PCM feed will
- ** be queried for a new timestamp afterwards, or destroyed if no new timestamp
- ** is available.
- */
-
- void (*destroy)(sfx_pcm_feed_t *self);
- /* Asks the PCM feed to free all resources it occupies
- ** Parameters: (sfx_pcm_feed_t *) self: Self reference
- ** free(self) should be part of this function, if applicable.
- */
-
- int (*get_timestamp)(sfx_pcm_feed_t *self, Audio::Timestamp &timestamp);
- /* Determines the timestamp of the next frame-to-read
- ** Returns : (Timestamp &) timestamp: The timestamp of the next frame
- ** (int) PCM_FEED_*
- ** This function is OPTIONAL and may be NULL
- */
-
- void *internal; /* The private bits of a PCM feed. */
-
- sfx_pcm_config_t conf; /* The channel's setup */
-
- const char *debug_name; /* The channel name, for debugging */
- int debug_nr; /* A channel number relative to the channel name, for debugging
- ** (print in hex) */
- int frame_size; /* Frame size, computed by the mixer for the feed */
-
-};
int sfx_pcm_available();
/* Determines whether a PCM device is available and has been initialised
diff --git a/engines/sci/sfx/test-iterator.cpp b/engines/sci/sfx/test-iterator.cpp
index 641d05b62f..32d7f8007f 100644
--- a/engines/sci/sfx/test-iterator.cpp
+++ b/engines/sci/sfx/test-iterator.cpp
@@ -103,7 +103,7 @@ int simple_it_next(song_iterator_t *_self, unsigned char *buf, int *result) {
}
}
-sfx_pcm_feed_t *simple_it_pcm_feed(song_iterator_t *_self) {
+Audio::AudioStream *simple_it_pcm_feed(song_iterator_t *_self) {
error("No PCM feed!\n");
return NULL;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-23 17:23:09 +0000