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Diffstat (limited to 'libs/appleutility/CoreAudio/AudioFile/AFPublic/DataSource.cpp')
-rw-r--r--libs/appleutility/CoreAudio/AudioFile/AFPublic/DataSource.cpp228
1 files changed, 114 insertions, 114 deletions
diff --git a/libs/appleutility/CoreAudio/AudioFile/AFPublic/DataSource.cpp b/libs/appleutility/CoreAudio/AudioFile/AFPublic/DataSource.cpp
index c8a93d2756..9ef9be24fb 100644
--- a/libs/appleutility/CoreAudio/AudioFile/AFPublic/DataSource.cpp
+++ b/libs/appleutility/CoreAudio/AudioFile/AFPublic/DataSource.cpp
@@ -2,14 +2,14 @@
File: DataSource.cpp
Abstract: DataSource.h
Version: 1.1
-
+
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
Inc. ("Apple") in consideration of your agreement to the following
terms, and your use, installation, modification or redistribution of
this Apple software constitutes acceptance of these terms. If you do
not agree with these terms, please do not use, install, modify or
redistribute this Apple software.
-
+
In consideration of your agreement to abide by the following terms, and
subject to these terms, Apple grants you a personal, non-exclusive
license, under Apple's copyrights in this original Apple software (the
@@ -25,13 +25,13 @@
implied, are granted by Apple herein, including but not limited to any
patent rights that may be infringed by your derivative works or by other
works in which the Apple Software may be incorporated.
-
+
The Apple Software is provided by Apple on an "AS IS" basis. APPLE
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
-
+
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
@@ -40,9 +40,9 @@
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-
+
Copyright (C) 2014 Apple Inc. All Rights Reserved.
-
+
*/
#include "DataSource.h"
#if TARGET_OS_WIN32
@@ -70,7 +70,7 @@ DataSource::~DataSource()
{
}
-SInt64 DataSource::CalcOffset( UInt16 positionMode,
+SInt64 DataSource::CalcOffset( UInt16 positionMode,
SInt64 positionOffset,
SInt64 currentOffset,
SInt64 size)
@@ -120,10 +120,10 @@ OSStatus MacFile_DataSource::SetSize(SInt64 inSize)
OSStatus MacFile_DataSource::ReadBytes(
- UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- void *buffer,
+ UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ void *buffer,
UInt32* actualCount)
{
if (actualCount) *actualCount = 0;
@@ -135,10 +135,10 @@ OSStatus MacFile_DataSource::ReadBytes(
}
OSStatus MacFile_DataSource::WriteBytes(
- UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- const void *buffer,
+ UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ const void *buffer,
UInt32* actualCount)
{
if (!buffer) return kAudio_ParamError;
@@ -162,7 +162,7 @@ UnixFile_DataSource::~UnixFile_DataSource()
{
if (mCloseOnDelete) close(mFileD);
}
-
+
OSStatus UnixFile_DataSource::GetSize(SInt64& outSize)
{
#if 0 // 6764274 using the cached file size causes a regression for apps that play a file while writing to it.
@@ -197,31 +197,31 @@ OSStatus UnixFile_DataSource::GetPos(SInt64& outPos) const
return noErr;
}
-SInt64 UnixFile_DataSource::UFCurrentOffset (UInt16 positionMode,
+SInt64 UnixFile_DataSource::UFCurrentOffset (UInt16 positionMode,
SInt64 positionOffset)
{
SInt64 offset = -1;
- switch (positionMode & kPositionModeMask)
+ switch (positionMode & kPositionModeMask)
{
- /*case fsAtMark :
+ /*case fsAtMark :
{
SInt64 pos;
OSStatus result = GetPos (pos);
if (result) return result;
- offset = pos;
+ offset = pos;
break;
}*/
case SEEK_SET :
{
- offset = positionOffset;
+ offset = positionOffset;
break;
}
- case SEEK_END :
+ case SEEK_END :
{
SInt64 size;
OSStatus result = GetSize (size);
if (result) return result;
- offset = size + positionOffset;
+ offset = size + positionOffset;
break;
}
case SEEK_CUR :
@@ -229,23 +229,23 @@ SInt64 UnixFile_DataSource::UFCurrentOffset (UInt16 positionMode,
SInt64 pos;
OSStatus result = GetPos (pos);
if (result) return result;
- offset = positionOffset + pos;
+ offset = positionOffset + pos;
break;
}
}
return offset;
}
-
+
OSStatus UnixFile_DataSource::ReadBytes( UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- void *buffer,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ void *buffer,
UInt32* actualCount)
{
if (actualCount) *actualCount = 0;
if (!buffer) return kAudio_ParamError;
- // can't use current offset as we need to go to the disk too much
+ // can't use current offset as we need to go to the disk too much
SInt64 offset = UFCurrentOffset (positionMode, positionOffset);
if (offset < 0) return kAudioFilePositionError;
@@ -260,7 +260,7 @@ OSStatus UnixFile_DataSource::ReadBytes( UInt16 positionMode,
else if (requestCount > remain) requestCount = remain;
} while (false);
#endif
-
+
if (requestCount <= 0) {
if (actualCount) *actualCount = 0;
return noErr;
@@ -283,20 +283,20 @@ OSStatus UnixFile_DataSource::ReadBytes( UInt16 positionMode,
#endif
if (numBytes == -1) return kAudioFilePositionError;
mFilePointer = offset + numBytes;
-
+
if (actualCount) *actualCount = (UInt32)numBytes;
return noErr;
}
-
-OSStatus UnixFile_DataSource::WriteBytes(UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- const void *buffer,
+
+OSStatus UnixFile_DataSource::WriteBytes(UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ const void *buffer,
UInt32* actualCount)
{
if (!buffer) return kAudio_ParamError;
- // can't use current offset as we need to go to the disk too much
+ // can't use current offset as we need to go to the disk too much
SInt64 offset = UFCurrentOffset (positionMode, positionOffset);
if (offset < 0) return kAudioFilePositionError;
@@ -320,7 +320,7 @@ OSStatus UnixFile_DataSource::WriteBytes(UInt16 positionMode,
#endif
if (numBytes == -1) return kAudioFilePositionError;
mFilePointer = offset + numBytes;
-
+
if (actualCount) *actualCount = (UInt32)numBytes;
return noErr;
}
@@ -330,50 +330,50 @@ OSStatus UnixFile_DataSource::WriteBytes(UInt16 positionMode,
#define NO_CACHE 0
OSStatus Cached_DataSource::ReadFromHeaderCache(
- SInt64 offset,
+ SInt64 offset,
UInt32 requestCount,
- void *buffer,
+ void *buffer,
UInt32* actualCount)
{
if (actualCount) *actualCount = 0;
OSStatus err = noErr;
ByteCount theActualCount = 0;
-#if VERBOSE
+#if VERBOSE
printf("read from header %lld %lu %lld %lu\n", offset, requestCount, 0LL, mHeaderCacheSize);
#endif
- if (!mHeaderCache())
+ if (!mHeaderCache())
{
mHeaderCache.allocBytes(mHeaderCacheSize, true);
err = mDataSource->ReadBytes(SEEK_SET, 0, mHeaderCacheSize, mHeaderCache(), &mHeaderCacheSize);
if (err == kAudioFileEndOfFileError) err = noErr;
if (err) return err;
}
-
+
ByteCount firstPart = std::min((ByteCount)requestCount, (ByteCount)(mHeaderCacheSize - offset));
ByteCount secondPart = requestCount - firstPart;
-
+
memcpy(buffer, mHeaderCache + (ByteCount)offset, firstPart);
theActualCount = firstPart;
-
+
if (secondPart) {
UInt32 secondPartActualCount = 0;
err = mDataSource->ReadBytes(SEEK_SET, mHeaderCacheSize, static_cast<UInt32>(secondPart), (char*)buffer + firstPart, &secondPartActualCount);
theActualCount += secondPartActualCount;
}
-
+
if (actualCount) *actualCount = (UInt32)theActualCount;
mOffset = offset + theActualCount;
-
+
return err;
}
OSStatus Cached_DataSource::ReadBytes(
- UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- void *buffer,
+ UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ void *buffer,
UInt32* actualCount)
{
if (actualCount) *actualCount = 0;
@@ -384,7 +384,7 @@ OSStatus Cached_DataSource::ReadBytes(
if (!buffer) return kAudio_ParamError;
if ((positionMode & kPositionModeMask) != SEEK_END) size = 0; // not used in this case
- else
+ else
{
err = GetSize(size);
if (err) return err;
@@ -392,7 +392,7 @@ OSStatus Cached_DataSource::ReadBytes(
SInt64 offset = CalcOffset(positionMode, positionOffset, mOffset, size);
if (offset < 0) return kAudioFilePositionError;
-
+
if (offset < mHeaderCacheSize) {
return ReadFromHeaderCache(offset, requestCount, buffer, actualCount);
}
@@ -405,10 +405,10 @@ OSStatus Cached_DataSource::ReadBytes(
SInt64 cacheEnd = mBodyCacheOffset + mBodyCacheCurSize;
if (mBodyCache() && requestCount < mBodyCacheSize && offset >= mBodyCacheOffset && offset < cacheEnd)
{
- if (offset + requestCount <= cacheEnd)
+ if (offset + requestCount <= cacheEnd)
{
// request is entirely within cache
-#if VERBOSE
+#if VERBOSE
printf("request is entirely within cache %lld %lu %lld %lu\n", offset, requestCount, mBodyCacheOffset, mBodyCacheCurSize);
#endif
memcpy(buffer, mBodyCache + (size_t)(offset - mBodyCacheOffset), requestCount);
@@ -417,25 +417,25 @@ OSStatus Cached_DataSource::ReadBytes(
else
{
// part of request is within cache. copy, read next cache block, copy.
-#if VERBOSE
+#if VERBOSE
printf("part of request is within cache %lld %lu %lld %lu\n", offset, requestCount, mBodyCacheOffset, mBodyCacheCurSize);
#endif
-
+
// copy first part.
ByteCount firstPart = (ByteCount)(cacheEnd - offset);
ByteCount secondPart = requestCount - firstPart;
-#if VERBOSE
- printf("memcpy offset %lld mBodyCacheOffset %lld offset - mBodyCacheOffset %lld firstPart %lu requestCount %lu\n",
+#if VERBOSE
+ printf("memcpy offset %lld mBodyCacheOffset %lld offset - mBodyCacheOffset %lld firstPart %lu requestCount %lu\n",
offset, mBodyCacheOffset, offset - mBodyCacheOffset, firstPart, requestCount);
#endif
memcpy(buffer, mBodyCache + (size_t)(offset - mBodyCacheOffset), firstPart);
-
+
theActualCount = static_cast<UInt32>(firstPart);
-
+
// read new block
SInt64 nextOffset = mBodyCacheOffset + mBodyCacheCurSize;
err = mDataSource->ReadBytes(SEEK_SET, nextOffset, mBodyCacheSize, mBodyCache(), &mBodyCacheCurSize);
-
+
if (err == kAudioFileEndOfFileError) err = noErr;
if (err) goto leave;
@@ -447,11 +447,11 @@ OSStatus Cached_DataSource::ReadBytes(
theActualCount = static_cast<UInt32>(firstPart + secondPart);
}
}
- else
+ else
{
if (requestCount > mBodyCacheSize)
{
-#if VERBOSE
+#if VERBOSE
printf("large request %lld %lu %lld %lu\n", offset, requestCount, mBodyCacheOffset, mBodyCacheCurSize);
#endif
// the request is larger than we normally cache, just do a read and don't cache.
@@ -461,19 +461,19 @@ OSStatus Cached_DataSource::ReadBytes(
else
{
// request is outside cache. read new block.
-#if VERBOSE
+#if VERBOSE
printf("request is outside cache %lld %lu %lld %lu\n", offset, requestCount, mBodyCacheOffset, mBodyCacheCurSize);
#endif
- if (!mBodyCache())
+ if (!mBodyCache())
{
mBodyCache.allocBytes(mBodyCacheSize, true);
-#if VERBOSE
+#if VERBOSE
printf("alloc mBodyCache %08X\n", mBodyCache());
#endif
}
mBodyCacheOffset = offset;
err = mDataSource->ReadBytes(SEEK_SET, mBodyCacheOffset, mBodyCacheSize, mBodyCache(), &mBodyCacheCurSize);
-#if VERBOSE
+#if VERBOSE
printf("read %08X %d mBodyCacheOffset %lld %lu %lu\n", err, err, mBodyCacheOffset, mBodyCacheSize, mBodyCacheCurSize);
#endif
if (err == kAudioFileEndOfFileError) err = noErr;
@@ -482,32 +482,32 @@ OSStatus Cached_DataSource::ReadBytes(
theActualCount = std::min(requestCount, mBodyCacheCurSize);
memcpy(buffer, mBodyCache(), theActualCount);
}
-
+
}
leave:
#endif
if (actualCount) *actualCount = (UInt32)theActualCount;
-#if VERBOSE
+#if VERBOSE
printf("<<read err %d actualCount %lu\n", err, *actualCount);
#endif
return err;
}
OSStatus Cached_DataSource::WriteBytes(
- UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- const void *buffer,
+ UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ const void *buffer,
UInt32* actualCount)
{
OSStatus err = noErr;
SInt64 size;
if (!buffer) return kAudio_ParamError;
-
+
if ((positionMode & kPositionModeMask) != SEEK_END) size = 0; // not used in this case
- else
+ else
{
err = GetSize(size);
if (err) return err;
@@ -515,18 +515,18 @@ OSStatus Cached_DataSource::WriteBytes(
SInt64 offset = CalcOffset(positionMode, positionOffset, mOffset, size);
if (offset < 0) return kAudioFilePositionError;
-
- if (mHeaderCache() && offset < mHeaderCacheSize)
+
+ if (mHeaderCache() && offset < mHeaderCacheSize)
{
// header cache write through
ByteCount firstPart = std::min((ByteCount)requestCount, (ByteCount)(mHeaderCacheSize - offset));
-#if VERBOSE
+#if VERBOSE
printf("header cache write through %lu %lu\n", mHeaderCacheSize, firstPart);
#endif
memcpy(mHeaderCache + (size_t)offset, buffer, firstPart);
}
-
-#if VERBOSE
+
+#if VERBOSE
printf("write %lld %lu %lld %d %lld\n", offset, requestCount, mOffset, positionMode, positionOffset);
#endif
@@ -535,18 +535,18 @@ OSStatus Cached_DataSource::WriteBytes(
{
// body cache write through
ByteCount firstPart = std::min((SInt64)requestCount, cacheEnd - offset);
-#if VERBOSE
+#if VERBOSE
printf("body cache write through %lld %lu %lld %lu\n", mBodyCacheOffset, mBodyCacheCurSize, offset, firstPart);
#endif
memcpy(mBodyCache + (offset - mBodyCacheOffset), buffer, firstPart);
}
-
+
UInt32 theActualCount;
err = mDataSource->WriteBytes(positionMode, positionOffset, requestCount, buffer, &theActualCount);
-
+
mOffset = offset + theActualCount;
if (actualCount) *actualCount = (UInt32)theActualCount;
-
+
return err;
}
@@ -555,11 +555,11 @@ OSStatus Cached_DataSource::WriteBytes(
//////////////////////////////////////////////////////////////////////////////////////////
Seekable_DataSource::Seekable_DataSource( void * inClientData,
- AudioFile_ReadProc inReadFunc,
- AudioFile_WriteProc inWriteFunc,
+ AudioFile_ReadProc inReadFunc,
+ AudioFile_WriteProc inWriteFunc,
AudioFile_GetSizeProc inGetSizeFunc,
AudioFile_SetSizeProc inSetSizeFunc)
- : DataSource(false), mClientData(inClientData), mReadFunc(inReadFunc), mWriteFunc(inWriteFunc),
+ : DataSource(false), mClientData(inClientData), mReadFunc(inReadFunc), mWriteFunc(inWriteFunc),
mSizeFunc(inGetSizeFunc), mSetSizeFunc(inSetSizeFunc)
{
}
@@ -585,15 +585,15 @@ OSStatus Seekable_DataSource::SetSize(SInt64 inSize)
return (*mSetSizeFunc)(mClientData, inSize);
}
-OSStatus Seekable_DataSource::ReadBytes(
- UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- void *buffer,
+OSStatus Seekable_DataSource::ReadBytes(
+ UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ void *buffer,
UInt32* actualCount)
{
OSStatus err;
-
+
if (actualCount) *actualCount = 0;
if (!mReadFunc) return kAudioFileOperationNotSupportedError;
if (!buffer) return kAudio_ParamError;
@@ -605,16 +605,16 @@ OSStatus Seekable_DataSource::ReadBytes(
if (err) return err;
SInt64 offset = CalcOffset(positionMode, positionOffset, mOffset, size);
-
+
// request is outside bounds of file
- if (offset < 0)
+ if (offset < 0)
return kAudioFilePositionError;
- if (offset >= size)
+ if (offset >= size)
return kAudioFileEndOfFileError;
-
+
// reduce request if it exceeds the amount available
requestCount = static_cast<UInt32>(std::min((SInt64)requestCount, size - offset));
-
+
UInt32 theActualCount = 0;
err = (*mReadFunc)(mClientData, offset, requestCount, buffer, &theActualCount);
if (actualCount) *actualCount = theActualCount;
@@ -622,23 +622,23 @@ OSStatus Seekable_DataSource::ReadBytes(
return err;
}
-
+
OSStatus Seekable_DataSource::WriteBytes(
- UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- const void *buffer,
+ UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ const void *buffer,
UInt32* actualCount)
{
OSStatus err;
-
+
if (!mWriteFunc) return kAudioFileOperationNotSupportedError;
if (!buffer) return kAudio_ParamError;
SInt64 size;
positionMode &= kPositionModeMask;
if (positionMode != SEEK_END) size = 0; // not used in this case
- else
+ else
{
err = GetSize(size);
if (err) return err;
@@ -646,7 +646,7 @@ OSStatus Seekable_DataSource::WriteBytes(
SInt64 offset = CalcOffset(positionMode, positionOffset, mOffset, size);
if (offset < 0) return kAudioFilePositionError;
-
+
UInt32 theActualCount;
err = (*mWriteFunc)(mClientData, offset, requestCount, buffer, &theActualCount);
if (err) return err;
@@ -658,16 +658,16 @@ OSStatus Seekable_DataSource::WriteBytes(
//////////////////////////////////////////////////////////////////////////////////////////
OSStatus Buffer_DataSource::ReadBytes(
- UInt16 positionMode,
- SInt64 positionOffset,
- UInt32 requestCount,
- void *buffer,
+ UInt16 positionMode,
+ SInt64 positionOffset,
+ UInt32 requestCount,
+ void *buffer,
UInt32* actualCount)
{
if (actualCount) *actualCount = 0;
- SInt64 offsetWithinBuffer = CalcOffset(positionMode, positionOffset, mOffset, mDataByteSize + mStartOffset) - mStartOffset;
+ SInt64 offsetWithinBuffer = CalcOffset(positionMode, positionOffset, mOffset, mDataByteSize + mStartOffset) - mStartOffset;
if (offsetWithinBuffer < 0 || offsetWithinBuffer >= mDataByteSize) return kAudioFilePositionError;
-
+
SInt64 bytesAfterOffset = mDataByteSize - offsetWithinBuffer;
SInt64 theActualCount = std::min(bytesAfterOffset, (SInt64)requestCount);
@@ -677,7 +677,7 @@ OSStatus Buffer_DataSource::ReadBytes(
}
memcpy(buffer, mData + offsetWithinBuffer, theActualCount);
-
+
if (actualCount) *actualCount = static_cast<UInt32>(theActualCount);
mOffset = offsetWithinBuffer + theActualCount;
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 04:12:16 +0000