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64-bit frame counts, so we don't get confused when frame counts

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pass 2^31 (takes about 13 hours)
This commit is contained in:
Glenn Maynard
2004-01-19 22:21:02 +00:00
parent a711474757
commit 040bba5a8c
4 changed files with 43 additions and 39 deletions
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stepmania/src/RageSound.cpp
+30 -26
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@@ -226,7 +226,7 @@ void RageSound::SetLengthSeconds(float secs)
void RageSound::Update(float delta)
{
if(playing && delta)
FillBuf(int(delta * samplerate() * samplesize));
FillBuf(int(delta * GetSampleRate() * samplesize));
}
/* Return the number of bytes available in the input buffer. */
@@ -386,7 +386,7 @@ int RageSound::GetData(char *buffer, int size)
/* Called by the mixer: return a block of sound data.
* Be careful; this is called in a separate thread. */
int RageSound::GetPCM(char *buffer, int size, int sampleno)
int RageSound::GetPCM( char *buffer, int size, int64_t frameno )
{
int NumRewindsThisCall = 0;
@@ -468,11 +468,11 @@ int RageSound::GetPCM(char *buffer, int size, int sampleno)
got = size;
}
/* This block goes from position to position+got_samples. */
int got_samples = got / samplesize; /* bytes -> samples */
/* This block goes from position to position+got_frames. */
int got_frames = got / samplesize; /* bytes -> frames */
/* Save this sampleno/position map. */
pos_map.push_back(pos_map_t(sampleno, position, got_samples));
pos_map.push_back( pos_map_t(frameno, position, got_frames) );
/* We want to fade when there's FADE_TIME seconds left, but if
* m_LengthSamples is -1, we don't know the length we're playing.
@@ -482,7 +482,7 @@ int RageSound::GetPCM(char *buffer, int size, int sampleno)
Sint16 *p = (Sint16 *) buffer;
int this_position = position;
for(int samp = 0; samp < got_samples; ++samp)
for(int samp = 0; samp < got_frames; ++samp)
{
float fSecsUntilSilent = float(m_StartSample + m_LengthSamples - this_position) / samplerate();
float fVolPercent = fSecsUntilSilent / fade_length;
@@ -497,10 +497,10 @@ int RageSound::GetPCM(char *buffer, int size, int sampleno)
}
bytes_stored += got;
position += got_samples;
position += got_frames;
size -= got;
buffer += got;
sampleno += got_samples;
frameno += got_frames;
}
return bytes_stored;
@@ -572,36 +572,38 @@ float RageSound::GetLengthSeconds()
return len / 1000.f; /* ms -> secs */
}
int RageSound::SearchPosMap( const deque<pos_map_t> &pos_map, int cur_sample, bool *approximate )
int64_t RageSound::SearchPosMap( const deque<pos_map_t> &pos_map, int64_t cur_frame, bool *approximate )
{
/* sampleno is probably in pos_map. Search to figure out what position
* this sampleno maps to. */
int closest_position = 0, closest_position_dist = INT_MAX;
* this frameno maps to. */
int64_t closest_position = 0, closest_position_dist = INT_MAX;
int closest_block = 0; /* print only */
for( unsigned i = 0; i < pos_map.size(); ++i )
{
if( cur_sample >= pos_map[i].sampleno &&
cur_sample < pos_map[i].sampleno+pos_map[i].samples )
if( cur_frame >= pos_map[i].frameno &&
cur_frame < pos_map[i].frameno+pos_map[i].frames )
{
/* cur_sample lies in this block; it's an exact match. Figure
/* cur_frame lies in this block; it's an exact match. Figure
* out the exact position. */
int diff = pos_map[i].position - pos_map[i].sampleno;
return cur_sample + diff;
int64_t diff = pos_map[i].position - pos_map[i].frameno;
return cur_frame + diff;
}
/* See if the current position is close to the beginning of this block. */
int dist = abs( pos_map[i].sampleno - cur_sample );
int64_t dist = llabs( pos_map[i].frameno - cur_frame );
if( dist < closest_position_dist )
{
closest_position_dist = dist;
closest_block = i;
closest_position = pos_map[i].position - dist;
}
/* See if the current position is close to the end of this block. */
dist = abs( pos_map[i].sampleno + pos_map[i].samples - cur_sample );
dist = llabs( pos_map[i].frameno + pos_map[i].frames - cur_frame );
if( dist < closest_position_dist )
{
closest_position_dist = dist;
closest_position = pos_map[i].position + pos_map[i].samples + dist;
closest_position = pos_map[i].position + pos_map[i].frames + dist;
}
}
@@ -614,7 +616,9 @@ int RageSound::SearchPosMap( const deque<pos_map_t> &pos_map, int cur_sample, bo
* SoundStopped has been called.
* 3. Underflow; we'll be given a larger sample number than we know about.
*/
LOG->Trace( "Approximate sound time: sample %i, dist %i, closest %i", cur_sample, closest_position_dist, closest_position );
/* XXX: %lli normally, %I64i in Windows */
LOG->Trace( "Approximate sound time: driver sample %lli, pos_map sample %lli (dist %lli), closest position is %i",
cur_frame, pos_map[closest_block].frameno, closest_position_dist, closest_position );
if( approximate )
*approximate = true;
@@ -624,21 +628,21 @@ int RageSound::SearchPosMap( const deque<pos_map_t> &pos_map, int cur_sample, bo
void RageSound::CleanPosMap( deque<pos_map_t> &pos_map )
{
/* Determine the number of frames of data we have. */
int total_frames = 0;
int64_t total_frames = 0;
for( unsigned i = 0; i < pos_map.size(); ++i )
total_frames += pos_map[i].samples;
total_frames += pos_map[i].frames;
/* Remove the oldest entry so long we'll stil have enough data. Don't delete every
* sample, so we'll always have some data to extrapolate from. */
while( pos_map.size() > 1 && total_frames - pos_map.front().samples > pos_map_backlog_samples )
while( pos_map.size() > 1 && total_frames - pos_map.front().frames > pos_map_backlog_samples )
{
total_frames -= pos_map.front().samples;
total_frames -= pos_map.front().frames;
pos_map.pop_front();
}
}
/* Get the position in frames (ignoring GetOffsetFix). */
int RageSound::GetPositionSecondsInternal( bool *approximate ) const
int64_t RageSound::GetPositionSecondsInternal( bool *approximate ) const
{
LockMut(SOUNDMAN->lock);
@@ -664,7 +668,7 @@ int RageSound::GetPositionSecondsInternal( bool *approximate ) const
}
/* Get our current hardware position. */
int cur_sample = SOUNDMAN->GetPosition(this);
int64_t cur_sample = SOUNDMAN->GetPosition(this);
return SearchPosMap( pos_map, cur_sample, approximate );
}