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Avoid position > end for floppy sample playback

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This commit is contained in:
Jason Flatt 2022-10-14 09:52:56 -07:00
parent 300f0f88ab
commit 3db5111a3a
2 changed files with 43 additions and 0 deletions
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41
floppy.patch Normal file
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@ -0,0 +1,41 @@
diff --git a/src/devices/imagedev/floppy.cpp b/src/devices/imagedev/floppy.cpp
index 3c00336d..cda94d92 100644
--- a/src/devices/imagedev/floppy.cpp
+++ b/src/devices/imagedev/floppy.cpp
@@ -1707,9 +1707,10 @@ void floppy_sound_device::sound_stream_update(sound_stream &stream, std::vector<
{
idx = m_spin_playback_sample;
sampleend = m_sample[idx].data.size();
- out = m_sample[idx].data[m_spin_samplepos++];
-
- if (m_spin_samplepos >= sampleend)
+ m_spin_samplepos++;
+ if (m_spin_samplepos < sampleend)
+ out = m_sample[idx].data[m_spin_samplepos];
+ else
{
// Motor sample has completed
switch (m_spin_playback_sample)
@@ -1763,7 +1764,8 @@ void floppy_sound_device::sound_stream_update(sound_stream &stream, std::vector<
idx = m_step_base + m_seek_playback_sample;
sampleend = m_sample[idx].data.size();
// Mix it into the stream value
- out += m_sample[idx].data[(int)m_seek_samplepos];
+ if (m_seek_samplepos < sampleend)
+ out += m_sample[idx].data[(int)m_seek_samplepos];
// By adding different values than 1, we can change the playback speed
// This will be used to adjust the seek sound
m_seek_samplepos += m_seek_pitch;
@@ -1781,8 +1783,10 @@ void floppy_sound_device::sound_stream_update(sound_stream &stream, std::vector<
sampleend = m_sample[idx].data.size();
// Mix it into the stream value
- out += m_sample[idx].data[m_step_samplepos++];
- if (m_step_samplepos >= sampleend)
+ m_step_samplepos++;
+ if (m_step_samplepos < sampleend)
+ out += m_sample[idx].data[m_step_samplepos];
+ else
{
// Step sample done
m_step_samplepos = 0;

2
org.mamedev.MAME.yaml
View file

@ -79,3 +79,5 @@ modules:
path: org.mamedev.MAME.metainfo.xml path: org.mamedev.MAME.metainfo.xml
- type: file - type: file
path: mame.ini path: mame.ini
- type: patch
path: floppy.patch