SCI: Some initial work on the sound of robot videos (doesn't work yet, seems to be a problem with the encoding of the customized SOL audio files in robot videos)

svn-id: r55023

1 files changed, 14 insertions, 0 deletions

diff --git a/engines/sci/sound/audio.cpp b/engines/sci/sound/audio.cpp
index 829a94d90c..f2c13cf5f5 100644
--- a/engines/sci/sound/audio.cpp
+++ b/engines/sci/sound/audio.cpp
@@ -243,6 +243,20 @@ static byte *readSOLAudio(Common::SeekableReadStream *audioStream, uint32 &size,
 	return buffer;
 }
 
+// FIXME: This doesn't work correctly yet, perhaps there are differences in the
+// way the audio in robot files is handled
+Audio::RewindableAudioStream *AudioPlayer::getRobotAudioStream(byte *buffer) {
+	const uint16 rbtHeaderSize = 19;	// TODO: is this right?
+	const uint16 rbtAudioRate = 22050;	// Seems to be hardcoded for all Robot videos
+	byte audioFlags = *(buffer + 6);
+	byte flags = 0;
+	uint32 audioSize = READ_LE_UINT16(buffer + 15) - rbtHeaderSize;
+
+	Common::MemoryReadStream dataStream(buffer + rbtHeaderSize - 1, audioSize, DisposeAfterUse::NO);
+	byte *data = readSOLAudio(&dataStream, audioSize, audioFlags, flags);
+	return Audio::makeRawStream(data, audioSize, rbtAudioRate, flags);
+}
+
 Audio::RewindableAudioStream *AudioPlayer::getAudioStream(uint32 number, uint32 volume, int *sampleLen) {
 	Audio::SeekableAudioStream *audioSeekStream = 0;
 	Audio::RewindableAudioStream *audioStream = 0;