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authorMax Horn2003-06-22 11:47:03 +0000
committerMax Horn2003-06-22 11:47:03 +0000
commit4ead10e4d5352e2fd0311ee09a5a99195d5fd97e (patch)
tree8126babb045a994797cd951ccd326ceaf2b4d7e2 /sound
parent9d9336492c23a56c5cbb26836f1452838b9a27b7 (diff)
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Change names of the stream API in the mixer; added endStream method (stop() halts stream immediately; endStream() lets it first finish playing)
svn-id: r8603
Diffstat (limited to 'sound')
-rw-r--r--sound/mixer.cpp34
-rw-r--r--sound/mixer.h11
2 files changed, 36 insertions, 9 deletions
diff --git a/sound/mixer.cpp b/sound/mixer.cpp
index bf2fd544b3..9f862ce65c 100644
--- a/sound/mixer.cpp
+++ b/sound/mixer.cpp
@@ -73,6 +73,7 @@ class ChannelStream : public Channel {
uint32 _bufferSize;
uint32 _rate;
byte _flags;
+ bool _finished;
public:
ChannelStream(SoundMixer *mixer, void *sound, uint32 size, uint rate, byte flags, int32 buffer_size);
@@ -83,6 +84,7 @@ public:
bool isMusicChannel() {
return true;
}
+ void finish() { _finished = true; }
};
#ifdef USE_MAD
@@ -170,18 +172,30 @@ SoundMixer::~SoundMixer() {
_syst->delete_mutex(_mutex);
}
-int SoundMixer::append(int index, void *sound, uint32 size) {
+void SoundMixer::appendStream(int index, void *sound, uint32 size) {
_syst->lock_mutex(_mutex);
- Channel *chan = _channels[index];
+ ChannelStream *chan = dynamic_cast<ChannelStream *>(_channels[index]);
if (!chan) {
- error("Trying to stream to a nonexistant streamer : %d", index);
+ error("Trying to append to a nonexistant stream %d", index);
} else {
- dynamic_cast<ChannelStream *>(chan)->append(sound, size);
+ chan->append(sound, size);
+ }
+
+ _syst->unlock_mutex(_mutex);
+}
+
+void SoundMixer::endStream(int index) {
+ _syst->lock_mutex(_mutex);
+
+ ChannelStream *chan = dynamic_cast<ChannelStream *>(_channels[index]);
+ if (!chan) {
+ error("Trying to end a nonexistant streamer : %d", index);
+ } else {
+ chan->finish();
}
_syst->unlock_mutex(_mutex);
- return 1;
}
int SoundMixer::insertChannel(PlayingSoundHandle *handle, Channel *chan) {
@@ -209,7 +223,7 @@ int SoundMixer::playRaw(PlayingSoundHandle *handle, void *sound, uint32 size, ui
return insertChannel(handle, new ChannelRaw(this, sound, size, rate, flags, id));
}
-int SoundMixer::playStream(void *sound, uint32 size, uint rate, byte flags, int32 buffer_size) {
+int SoundMixer::newStream(void *sound, uint32 size, uint rate, byte flags, int32 buffer_size) {
return insertChannel(NULL, new ChannelStream(this, sound, size, rate, flags, buffer_size));
}
@@ -717,6 +731,7 @@ ChannelStream::ChannelStream(SoundMixer *mixer, void *sound, uint32 size, uint r
_pos = _ptr;
_fpPos = 0;
_fpSpeed = (1 << 16) * rate / mixer->_outputRate;
+ _finished = false;
// adjust the magnitude to prevent division error
while (size & 0xFFFF0000)
@@ -757,6 +772,13 @@ void ChannelStream::mix(int16 *data, uint len) {
const int16 *vol_tab = _mixer->_volumeTable;
if (_pos == _endOfData) {
+ // Normally, the stream stays around even if all its data is used up.
+ // This is in case more data is streamed into it. To make the stream
+ // go away, one can either stop() it (which takes effect immediately,
+ // ignoring any remaining sound data), or finish() it, which means
+ // it will finish playing before it terminates itself.
+ if (_finished)
+ destroy();
return;
}
diff --git a/sound/mixer.h b/sound/mixer.h
index bced868538..16e94f3326 100644
--- a/sound/mixer.h
+++ b/sound/mixer.h
@@ -86,7 +86,6 @@ public:
FLAG_LOOP = 1 << 5 // loop the audio
};
int playRaw(PlayingSoundHandle *handle, void *sound, uint32 size, uint rate, byte flags, int id = -1);
- int playStream(void *sound, uint32 size, uint rate, byte flags, int32 buffer_size);
#ifdef USE_MAD
int playMP3(PlayingSoundHandle *handle, void *sound, uint32 size, byte flags);
int playMP3CDTrack(PlayingSoundHandle *handle, File *file, mad_timer_t duration);
@@ -110,8 +109,14 @@ public:
/** stop playing a specific sound */
void stopID(int id);
- /** append to existing sound */
- int append(int index, void * sound, uint32 size);
+ /** Start a new stream. */
+ int newStream(void *sound, uint32 size, uint rate, byte flags, int32 buffer_size);
+
+ /** Append to an existing stream. */
+ void appendStream(int index, void * sound, uint32 size);
+
+ /** Mark a stream as finished - it will play all its remaining data, then stop. */
+ void endStream(int index);
/** Check whether any SFX channel is active.*/
bool hasActiveSFXChannel();